JP6841407B2 - Injection molding rotary mold - Google Patents

Description

The present invention relates to an injection molding rotary mold called a revolver mold or the like used in an injection molding machine and an injection molding method. Specifically, the present invention relates to an injection molding rotary mold that completes injection molding in one rotation of the mold. It is about.

As is well known, as a technique of an extrusion molding machine for continuous molding, as described in Patent Document 1, an intermediate rubber tube layer is applied to the outside of an inner surface resin layer arranged in the innermost layer, and the outer side is reinforced. A long vultured hose body in which an outer surface rubber layer is laminated via a layer is formed, the tip of the hose body is sealed, and a predetermined pressure is applied from the rear end into the inner surface resin layer to adjust this pressure. While pulling the tip of the hose body, the hose body is sequentially inserted into the heating device and heated to a predetermined temperature, and the hose body is sandwiched from the tip by a mold having a predetermined bending shape and molded. In this state, the hose is conveyed to a cooling means, cooled in sequence, and then demolded. After the hose body completes the demolding process over the entire length, pressure is removed from the hose body and the hose is cut according to the required length of the hose. , There is a technique for continuously extruding a predetermined bent shape molding hose.

The technique described in Patent Document 1 assumes that the hose body has been vulcanized, pressurizes the inside of the inner surface resin layer before heating, and constantly pressurizes the inside of the inner surface resin layer until the hose body completes the demolding process over the entire length. At the same time, a mold having a predetermined bent shape sandwiches and molds the hose body, and the hose body is molded and transported to the cooling means in a sandwiched state, so that the hose body can be bent into a predetermined bent shape without human intervention. It can be continuously and automatically molded, and at the same time, by wasting only the end of the hose body, it is possible to eliminate the waste of the end that occurs at each end of the molded resin composite rubber hose, and the work efficiency. Can be improved to significantly increase the productivity of curved shaped hoses. In addition, the pressure-adjustable pressurizing means allows heating while adjusting the pressure inside the inner surface resin layer of the hose body, keeping the inner pressure of the inner surface resin layer constant at all times, and wrinkling the innermost resin layer. It can be prevented from occurring and the quality of the molded hose can be improved.

As described above, in the extrusion molding machine, continuous automatic forming can be enabled, and workability and productivity can be improved. However, in an injection molding machine, steps of mold clamping, injection, cooling, and demolding are required for each product, and resin molding cannot be performed unless these steps of mold clamping, injection, cooling, and demolding are sequentially performed.
Therefore, in Patent Document 2, a rotation having at least two mold dividing surfaces in which a common mold attached to a fixed plate and a cooling means are arranged and combined with the common mold by mold clamping to form a mold cavity. A dummy that is attached to the mold portion and the movable plate, and the heating means is arranged on the surface of the rotating mold portion that faces the mold dividing surface, and is combined with the rotating mold portion by mold clamping to form a closed space. A mold cavity composed of a plate and performing injection molding between a common mold and a rotating mold at the time of mold clamping, and a mold (mold cavity surface) between the rotating mold and the dummy plate by heating means. A closed space for heating can be formed at the same time. As a result, the heating and cooling of the mold can be overlapped without complicating the configuration of the mold. Therefore, Patent Document 2 discloses a technique capable of further shortening the molding cycle rather than shortening each step of heating and cooling and the time for switching each step.

Further, Patent Document 3 is a press machine for press-pressing a set work by molding a molding die in a vertical direction by a drive source, and holds a plurality of pairs of molding dies and can rotate around a vertical axis. It is equipped with a revolver, and by rotating the revolver, any molding die is moved to the position to be pressed, and each time the pressurization is completed, the molding die holding the pressurized workpiece performs the pressurization. A press machine in which a revolver rotates so as to move to a position different from the position and to a position where another molding die performs pressurization is disclosed.

Japanese Unexamined Patent Publication No. 5-169557 Japanese Unexamined Patent Publication No. 2013-215966 WO2012 / 073337

In particular, in Patent Document 2, a cavity in which injection molding is performed between the common mold and the rotary mold portion at the time of mold clamping and a closed space in which the cavity surface is heated by a heating means are simultaneously formed between the rotary mold portion and the dummy plate. The heating and cooling of the mold can be overlapped, and the molding cycle can be further shortened by shortening the heating and cooling steps and the switching time of each step.
Here, the cavity for injection molding and the heating time for heating the cavity surface are set at the same time, and the heating and cooling of the mold are overlapped. Even if the heating and cooling of the mold are overlapped in this way, the molding cycle can be shortened, but a loss occurs in terms of thermal energy, and the efficiency cannot be improved.
On the other hand, in principle, in an injection molding machine, molding cannot be performed unless all the steps of mold clamping, injection, cooling, and demolding are sequentially performed. Therefore, for example, in terms of heat energy such as injection and cooling, the reverse operation is performed. When it is necessary, the molten resin is injected into the cavity, and immediately after that, cooling starts, which wastes heat energy. Further, the molding, injection, cooling, and demolding steps need to be performed by a badge system, and it is limited in Patent Document 2 that any of them is duplicated to shorten the processing time.

Patent Document 3 discloses a press machine that holds a plurality of pairs of molding dies, includes a revolver that can rotate around a vertical axis, molds the molding dies in the vertical direction, and pressurizes the set workpiece. There is. According to this press machine, the revolver is rotated, pressure-processed with an arbitrary molding die, and the molding die for holding the pressurized workpiece is moved to another vertical position. However, in the technique of Patent Document 3, the workpieces are sequentially processed by rotating the revolver, and the workpieces are raised from the bottom to the top. In Patent Document 3, the work is only processed sequentially from bottom to top, and although pressure processing can be performed in the case of metal processing, it cannot be applied in the case of synthetic resin.

Therefore, in order to solve the above problems, the present invention reduces waste of heat energy for obtaining a resin molded product, enables simultaneous processing of resin injection, cooling, and molding, and performs a molding cycle until the resin molded product is obtained. An object of the present invention is to provide an injection molding rotary mold that can be shortened.

The injection molding rotary mold according to the invention of claim 1 has a core that draws a locus with a radius concentric with the center line and forms a part of the resin molded product with a uniform distance from the center line, and the core. Similarly, a first unit having a uniform distance from the center line, a cavity forming the rest of the resin molded product, and filling the cavity formed between the molded core and the cavity with resin. The injection-molded part and the new cavity formed in the state where the first injection-molded part is filled with resin, the second injection-molded part filled with the resin, the core, and the resin-molded product from the cavity. It has a take-out part to be taken out from the mold, a heat medium that lowers the mold temperature of the core and the cavity, and the resin temperature of the resin molded product, and the first injection-molded part and the second injection-molded part are mutually. In the meantime, a cooling unit arranged in the range of 1 to 3 is provided between the second injection molding unit and the take-out unit.

Here, the locus that draws the radius with the center line as a concentric circle is the locus of the core that forms a part of the resin molded product with a uniform distance from the center line, up to the locus of the core that rotates about the center line. It makes the distance uniform.
The first injection molding unit fills the cavity formed between the molded core and the cavity with resin, and is an injection molding machine (for example, two valve gates and a hot branching hot plate) from the cavity side. The resin is injected by a runner or the like).
Further, the cooling unit is arranged in the range of 1 to 3 between the first injection molding unit and the second injection molding unit, and between the second injection molding unit and the take-out unit. The mold temperature and the resin temperature are lowered, and the cooling unit is composed of 1 to 4 parts as required.
Then, the second injection molding portion fills the cavity with the resin again with respect to the new cavity formed by the first injection molding portion in the state of being filled with the resin.
Further, the take-out part releases the resin-molded product cooled by the cooling part and takes out the resin-molded product.

The core that draws a radius locus with the center line of the injection molding rotary mold according to the invention of claim 2 as concentric circles has the center line aligned in the horizontal direction and the take-out portion as the lowermost portion, and the resin. The molded product is dropped and taken out.
Here, the resin molded product can be dropped and taken out from the take-out portion, and can also be taken out by the hand of the robot. In particular, since the take-out portion is determined from the core and the cavity at the lowest position without rotating, a simple take-out mechanism can be used.

The injection molding rotary mold according to claim 1 has a core that draws a locus of radius with the center line as a concentric circle and forms a part of the resin molded product with a uniform distance from the center line, and similarly to the core. It is provided with a cavity that makes the distance from the center line uniform and forms the rest of the resin molded product, and the core and the cavity are made of resin in a molded cavity formed between the core and the cavity. The first injection-molded part that can be filled with the same resin or another resin, the second injection-molded part that can be filled with the same resin or another resin in a new cavity formed in a state where the first injection-molded part is filled with resin. The first injection-molded part has a take-out part for removing and taking out the resin-molded product from the core and the cavity, and a heat medium for lowering the mold temperature of the core and the cavity and the resin temperature of the resin-molded product. A cooling unit arranged in the range of 1 to 3 is provided between the second injection-molded part and the second injection-molded part and between the second injection-molded part and the take-out part.

Therefore, when the resin temperature is at a high temperature at which the resin is injected, the first injection molded portion fills the cavity formed between the molded core and the cavity with the resin. The filled resin lowers the mold temperature and the resin temperature by a first cooling unit (cooling unit) composed of one or more locations according to the volume thereof. The second injection-molded part is filled with the resin again for the new cavity formed in the state where the first injection-molded part is filled with the resin. Next, the filled resin is cooled by a second cooling unit (cooling unit) composed of one or more locations according to its volume, and the molding resin cooled by the second cooling unit (cooling unit) is released from the mold. However, since the resin molded product is taken out at the take-out part, each step of the first injection-molded part, (first cooling part), second injection-molded part, (second cooling part), and taking-out part is performed. The process time is uniform, but the overall processing time can be shortened.

In particular, when the present invention is carried out, for example, two or more molds facing each other between the core and the cavity are arranged, and the first injection molding portion and the first mold are individually arranged between the plurality of arranged molds. The processing time of each process of the cooling unit (cooling unit), the second injection molding unit, the second cooling unit (cooling unit), and the take-out unit is made the same in one rotation (the start to end times of each process are the same), and the resin is used. Since it is commercialized as a molded product, high-speed processing by real-time processing becomes possible.

In particular, since the second injection-molded part is to fill the new cavity with resin again with respect to the new cavity formed in the state where the first injection-molded part is filled with resin, the resin-molded product. By reducing the thickness of the surface resin of the above, laminated molding with less sink marks becomes possible.
Further, in each step of the first injection molding part, the first cooling part (cooling part), the second injection molding part, the second cooling part (cooling part), and the taking-out part, the cavity surfaces of the core and the cavity are the minimum. Since it can be set to, miniaturization is possible. Then, high-speed molding becomes possible. Furthermore, multicolor printing and, in addition, multicolor molding are possible.
Further, for a new cavity formed in a state where the first injection molding portion is filled with resin, if the second injection molding portion is made of a resin such as tampo printing again in the new cavity, the printing resin is filled. Can include post-processes of tampo printing.
In addition, it moves in each process cycle of the first injection molding part, the first cooling part (cooling part), the second injection molding part, the second cooling part (cooling part), and the take-out part in the mold, and at the same time, the second Since the steps of 1 injection molding part, 1st cooling part (cooling part), 2nd injection molding part, 2nd cooling part (cooling part), and taking out part are performed, the structure of the entire mold becomes compact.

Therefore, the injection molding rotary mold of the present invention reduces waste of heat energy for obtaining a resin molded product, can process resin injection, cooling, and molding at the same time, and shortens the molding cycle until the resin molded product is obtained. can do.

In the injection molding rotary mold of claim 2, the core for molding the resin molded product by drawing a locus of a radius concentric with the center line and making the distance from the center line uniform, aligns the center line in the horizontal direction. Moreover, since the take-out portion for taking out the resin molded product is set at the lowest position and the resin molded product is dropped and taken out from the take-out portion, in addition to the effect according to claim 1, the center line is set. Since the core that is rotatable around the center rotates based on the horizontal axis, if the core can be freely dropped at the lowest position of the take-out portion, it is possible to save energy in taking out the resin molded product.

FIG. 1 is a front view of the injection molding rotary mold according to the first embodiment of the present invention. FIG. 2 is a vertical sectional view of a front view of the injection molding rotary mold according to the first embodiment of the present invention. FIG. 3 is an explanatory diagram of a state in which injection is performed from the valve gate of the injection molding rotary mold according to the first embodiment of the present invention. FIG. 4 is an explanatory view of a heat medium passage in a front view of the injection molding rotary mold according to the first embodiment of the present invention. FIG. 5 is a front vertical cross-sectional view of the injection molding rotary mold according to the first embodiment of the present invention in the mold open state. FIG. 6 is a front vertical cross-sectional view of the injection molding rotary mold according to the second embodiment of the present invention in the mold open state.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the embodiment, the same symbols and the same symbols shown in the drawings are the same or corresponding functional parts, and thus the duplicate description thereof will be omitted here.

[Embodiment]
First, as shown in FIGS. 1 to 5, the timing rod 11 of the injection molding rotary mold of the present embodiment is inserted and arranged in a cylinder 13 having both ends held by ball bearings 12, and the periphery of the cylinder 13 is ratcheted. A pawl blade 15 meshes around the gear 14 and the ratchet gear 14, and the timing rod 11 is rotatable in the circumferential direction thereof. Further, the cylinder 13 is also rotatable in its circumferential direction. The timing rod 11 and the cylinder 13 rotate integrally. That is, the ball bearing 12 and the ball bearing 17 are attached to the frame body 68.
The timing rod 11 moves in the left-right direction in FIG. 2, and in particular, it is rotatable only in the length direction by two or four roller units 16 that restrain the right end from four directions.

That is, the right side of the timing rod 11 is a moving path 20 for inserting a twist (spiral) that rotates 60 degrees while the roller unit 16 made of a roller, metal, or the like rolls, and the roller unit 16 rolls on the moving path 20. It is configured to do. Further, since the rotation of the cylinder 13 with the timing rod 11 is restricted by the roller unit 16, the cores 40 _-1 , _40-2 , 40 _-3 , 40 while the roller unit 16 rolls the timing rod 11. _-4 , 40 _-5 , 40 _-6 (hereinafter, when not pointing to a specific core, simply referred to as "core 40") is a force that rotates 60 degrees in the circumferential direction (on the paper in Fig. 2). (Vertical direction), which is the force between the ratchet gear 14 and the pawl blade 15.

As shown in FIGS. 1 and 2, each core 40 is fixed to the rotary mold 30 with four bolts. Further, the core 40 _-6 attached to the tip guide member 78 of the operating rod 67, the distal end of the return spring 77 is guided to the guide member 78. Each core 40 has a center position on a line that draws a locus of radius R with the center line LL of the center of the center member 32 as a concentric circle. Therefore, the cores 40 _-1 , 40 _-2 , 40 _-3 , 40 _-4 , 40 _-5 , 40 _-6 have their center positions on the line that draws the locus of radius R.

On the other hand, cavities 60 _-1 , 60 _-2 , 60 _-3 , 60 _-4 , 60 _-5 , 60 _-6 (hereinafter, when not referring to a specific cavity, simply referred to as "cavity 60") are Each time the mold is opened and the mold is tightened, a reciprocating path is performed in the left-right direction, and the ratchet mechanism 10 moves 60 degrees during that time, but the rotation of each cavity 60 is irrelevant. However, the core 40 _-1, 40 _-2, 40 _-3, 40 _-4, 40 _-5, the 40 _-6, the cavity 60 _-1 which is formed in the fixed member 61, 60 _-2, 60 _-3, 60 _{- 4} , 60 _-5 , 60 _-6 correspond and are injected or cooled in the same position.

In the present embodiment, the cavity 60 is integrally formed, but since the present invention is easy to understand, the cavities 60 _-1 , _60-2 , 60 _-3 , 60 _-4 , 60 _-5 , is separated from the 60 _-6 or as will be described are. Basically, it may be integrated or separated, and it is not limited to the revolver mold or the like.

The left end of the timing rod 11 shown in FIG. 2 is integrally fixed by the fixing mold 41 and the fixing member 42. Further, the fixed frame 43 and the mold frame 44 are both provided with a valve gate 80 for injection at two known locations and a hot runner 90 for branching the injection amount. When carrying out the present invention, any combination of the valve gate 80 and the hot runner 90 may be used.
Further, the connection fixing member 22 is connected to the fixing member 21, and up to the mold frame 23 is integrally fixed, and the protrusion operation portion 65 and the end holding portion 66 for operating the lever for protruding the resin molded product X are provided. Have.

Further, the pawl blade 15 is provided with spur gear-shaped gears 18 having both ends held by ball bearings 17, and a support shaft 15a of the pawl blade 15 is attached to the gear 18. Therefore, since the ratchet gear 14 whose one side is inclined in a sawtooth shape rotates without meshing with the pawl blade 15, it becomes rotatable in the clockwise rotation direction. However, in the counterclockwise rotation, the ratchet gear 14 is meshed by the pawl blade 15, so that the rotation is restricted and the rotation is on the timing rod 11 side.

The timing rod 11 rotates 60 degrees with the one round trip in the left-right direction of the timing rod 11 without the ratchet gear 14 and the pawl blade 15 meshing with each other. As a result, the displacement of the meshing angle between the ratchet gear 14 and the pawl blade 15 becomes 60 degrees.
The ratchet mechanism 10 is composed of a single ratchet gear 14 and a plurality of pawl blades 15 attached to a support shaft 15a, and a spur gear-shaped gear 19.

That is, the parting surface 70 formed by the parting line 75 that distinguishes each core 40 from the cavities 60 _-1 , _60-2 , 60 _-3 , 60 _-4 , 60 _-5 , 60 _{-6 is the center line L-. Cores 40 -1} , 40 _-2 , 40 _-3 , 40 _-4 , 40 _-5 , 40 _-6 whose loci are circles with a radius R with L as a concentric circle are arranged. The cores 40 _-1 , 40 _-2 , 40 _-3 , 40 _-4 , 40 _-5 , 40 _-6 are provided every 60 degrees (360 ° / 6 divisions).
In the present embodiment, the cores 40 _-1 , 40 _-2 , 40 _-3 , 40 _-4 , 40 _-5 , 40 _-6 are set at angle positions at intervals of 60 degrees, but the inventors' experiments According to the above, in order to make the size and radius R of the entire mold compact, it was found that it is preferable to arrange 360 at intervals of 45 to 60 degrees by the number of numbers divisible by an integer.

Each core 40 of the present embodiment, as shown in FIG. 3, the partition wall 48 through which the heat medium flows is inserted into the central axis of each core 40 (L ₂ -L _2), the center axis (L ₂ -L ₂ ) Is folded back on both sides to flow. As a result, each core 40 is cooled.

Each cavity 60 is separated from each core 40 by a length equal to or longer than the length of the resin molded product X, and in that state, each cavity 60 is molded into each specific core 40 adjacent to the core 40. At this time, between the inner periphery and the cavity 60 _-1 core 40 _-1, a cavity 71 is formed, a resin by a known valve gate 80 is injected into the cavity 71.

In this embodiment, the first injection molding unit 51 corresponding to the core 40 _-1 by known valve gate 80 inside the cavity 71 and the surrounding cavity 60 _-1 core 40 _-1, the resin to the cavity 71 To inject. A heat medium is always passed through the heat medium passages W1 and W2 around each core 40 and each cavity 60 to cool the core 40, so that the injected resin does not soften even when the mold is opened.

Then, the first cooling unit 52 and the second cooling unit 53 constituting the cooling unit fold back the heat medium by the partition wall 48 at _{the central axis (L 2-} L _{2) of the core 40 shown in FIG. 3, and the central axis (L).} Cooling is performed on both sides of _2- L _2). In the second injection molding unit 54, resin is filled via a known valve gate 80 inside the cavity 72 of the core 40 _-4 surrounding the cavity 60 ₄ (e.g., the cavity 72 was larger cavity 60 _-4) To. Furthermore, the resin filled in the cavity 72 of the core 40 _-4 surrounding the cavity 60 _-4 is cooled. In the third cooling unit 55, the cavities _60-4 and the resin filled in the cavities 72 are cooled.

In the second injection molding section 54, resin is injected into the periphery of _{the core 40 -4 and the cavity 72 inside the cavity 60 -4} , and the third cooling section 55 constituting the cooling section is the core 40 _{-5 shown in FIG.} the central axis (L ₂ -L ₂₎ in flowing folded heat medium by a partition wall 48, the cooling is performed on both sides of the center axis (L ₂ -L _2). Then, it is sent to the take-out unit 56. Each cavity 60 side of the take-out portion 56 is cut out in a substantially U shape, and when the mold is further opened, each cavity 60 side becomes a space, and the resin molded product X formed around _{the core 40-6 is a protrusion operation portion.} in the external force applied to the 65 and the end holding portion 66, when pushing out the guide member 78 by the operating rod 67 is stripped from the core 40 _-6, it can be dropped. Here, the return spring 77 is formed so that when the parting line 75 is pushed by the operating rod 67 and the external force is released, the return spring 77 returns to the original position.
The end of the operating stick 67 of each core 40 and the end of the return spring 77 are guided to the guide member 78 of each core 40, but the structure of each core 40 is simplified in the drawing.

Therefore, the cores 40 _-1 , 40 _-2 , 40 _-3 , 40 _-4 , 40 _-5 , 40 _-6 are subjected to rotational displacement every 60 degrees, but each cavity 60 is changed by each core 40. Even so, the position of each cavity 60 does not change in rotation. Of course, the shape change of each cavity 60 does not regulate even if the resin molded product X is sequentially expanded.

However, _{the shapes between the cavities 60 -1} , 60 _-2 , 60 _-3 , 60 _-4 , 60 _-5 , 60 _-6 are not always constant. For example, cavities 60 _-1 , 60 _-2 , 60 _-3 , 60 _-4 , 60 _-5 , 60 _-6 may be formed in front, as long as the cavity 60 _-1 side is _{slimmer than the cavity 60 -6 side.} Any resin may be used as long as it enters the inside of each cavity 60 when the resin is molded.

When the parting surface 70 is opened, the mold is opened, and when the parting surface 70 is closed, the mold is tightened. Each time the parting surface 70 is opened, the timing rod 11 follows in the left-right direction and reciprocates. When the timing rod 11 moves to the left, the roller unit 16 twists and rotates 60 degrees while moving to the left on the moving path 20. Since the ratchet gear 14 is twisted and rotated by 60 degrees without being meshed by the pawl blade 15, it becomes rotatable in the clockwise rotation direction.

However, when the roller unit 16 rotates while moving to the right on the moving path 20, only the timing rod 11 rotates because the ratchet gear 14 and the pawl blade 15 mesh with each other. Therefore, the ratchet gear 14 rotates 60 degrees without being meshed by the pawl blade 15, but when the roller unit 16 returns while moving to the right on the moving path 20, the ratchet gear 14 meshes with the pawl blade 15 and relative movement is impossible. Therefore, the ratchet gear 14 rotates between the cylinder 13 and the timing rod 11 in a state of being meshed with the pawl blade 15.

The spur gear-shaped gear 18 is provided with a ball bearing 33 arranged around the rotating die 30, and is attached to the main frame 69 via the ball bearing 33. That is, the center of the center member 32 is set as the center line LL, and the ball bearing 33 is arranged on the outer circumference of the center member 32 to hold the rotating mold 30. The central member 32 is fixed to the main frame body 69 and is the same as the rotating shaft of the rotating mold 30. Further, in the rotating mold 30, a ball bearing 34 is arranged on the opposite side of the central member 32 so that the rotating mold 30 can be smoothly rotated. Then, the ball bearing 34 rotates inside the main frame body 69.

The rotating mold 30 is provided with cores 40 _-1 , _40-2 , 40 _-3 , 40 _-4 , 40 _-5 , 40 _-6 . Further, the fixing member 61 is provided with cavities 60 _-1 , 60 _-2 , 60 _-3 , 60 _-4 , 60 _-5 , 60 _-6 . Therefore, when the pawl blade 15 of the ratchet mechanism 10 rotates the gear 19 to the right, the rotation of the gear 31 becomes counterclockwise as shown in FIG.
The rotation of the spur gear-shaped gear 19 meshes with the gear 31 of the rotating die 30, and becomes the rotation of the rotating die 30. That is, the rotation of the spur gear-shaped gear 19 is the rotation direction of the pawl blade 15 of the ratchet mechanism 10, and the rotation direction of the ratchet gear 14 is determined by the sawtooth angle of the pawl blade 15.

On the fixing member 61 side of the rotating mold 30, the first injection molding part 51, the first cooling part 52 and the second cooling part 53 composed of two pieces, the second injection molding part 54, the third cooling part 55, and the take-out part are taken out. The portion 56 is arranged at the position of each core 40.
First, the first injection molding unit 51 is a portion for performing injection molding in a cavity 71 formed between core 40 _-1 and the cavity 60 _-1, which is clamping the resin is filled in the valve gate 80. In the first injection molding section 51 and the second injection molding section 54, as in the case of the first cooling section 52, the second cooling section 53, the third cooling section 55, and the take-out section 56, the heat medium is always in the heat medium passages W1 and W2. Is flowing and cooling. The heat medium passage has the same structure in which the heat medium is folded back by the partition wall 48 inside each core 40.
Further, the first cooling unit 52 and the second cooling unit 53 are cooled by filling the cavity 72 formed by filling the cavity 71 of the first injection molding unit 51 with the resin. Specifically, the heat medium is supplied to the heat medium passages W1 and W2 to lower the mold temperature and the resin temperature. Depending on the amount of resin used, the first cooling unit 52 has one stage, two stages, and three stages. And one or more of the same as the second cooling unit 53 can be used.

Then, the second injection molding section 54 refills the new cavity 72 formed in the state where the first injection molding section 51 is filled with the resin. For example, when the cavity 71 is filled with resin in the first injection molding section 51 and a film is formed around the cavity 71, or when two-color molding in which designability is a problem, or when a clear resin is formed on the outer surface. The cavity 72 is filled with resin when it is desired to obtain a design without sink marks. At this time, since the resin filled in the cavity 71 is present, the curing speed is slower than that of the first injection molding portion 51.
Further, the third cooling unit 55 cools the resin filled in the second injection molding unit 54, supplies the heat medium to the fixing member 61 and each cavity 60 via the heat medium passages W1 and W2, and molds the mold. It lowers the temperature and resin temperature. The heat medium can be supplied only to the fixing member 61 and each cavity 60 or each cavity 60 in the heat medium passages W1 and W2, and lowers the mold temperature and the resin temperature.

The take-out unit 56 releases the resin molded product X cooled by the third cooling unit 55 and takes out the resin molded product X. Normally, from the viewpoint of energy saving, the fall path 35 is naturally dropped and the resin molded product X is naturally dropped from the take-out port 46. It is desirable to remove it from the resin molded product X. A space is formed in each cavity 60 and the fixed mold 41 for the molded resin product to fall. In the present embodiment, the protrusion operating portion 65 and the end holding portion 66 for moving the operating rod 67 release the resin molded product X from _{the core 40-6 side by an operation from the outside.}
In the take-out portion 56, a drop path 35 is formed in the fixing member 61 in _{which the cavities 60-6 are arranged so that the resin molded product X may fall.}

Specifically, when clamping, the take-out portion 56 is a gap between the core 40 _-6 are notched cavity 60 _-6 side in a substantially U shape is slight. However, when the mold is opened, the cavity _60-6 side becomes a space, and _{the resin molded product X formed around the core 40-6} is operated by the protrusion operation portion 65 and the end holding portion 66 when the mold is opened. The operating rod 67 pushes the parting line 75 to peel off the resin molded product X from each core 40 and drop it.
When the parting line 75 of the resin molded product X is pushed by the return spring 77 by the operating rod 67, the spring, the piston, and the cylinder are formed so as to return to the original position when the external force is released.

The heat medium passage W1 of a heat medium such as water has a substantially grid shape so that the heat medium can be submerged, and is _{supplied from the input W1 IN} to the center of the center member 32 of the mold via the heat medium passage W _{01. Further, via the heat medium passage W 02} , the heat medium passage W ₀₃ , the heat medium passage W ₀₄ , the heat medium passage W ₀₅ , and the heat medium passage W ₀₆ between the first injection molding unit 51 and the first cooling unit 52. , Returning to the first injection molding section 51, and further discharging from the output W1 _{OUT through the heat medium passage W 07} , the heat medium passage W ₀₈ , and the heat medium passage W _09.
As a result, the first cooling unit 52 passes through the first cooling unit 53, the second injection molding unit 54, and the third cooling unit 55, and further passes through the take-out unit 56 and the first injection molding unit 51, and is discharged from _{the output W1 OUT.} doing. The heat medium passage W1 is arranged on the anti-cavity 60 side (see FIG. 3) of each core 40.

Further, the heat medium passage W2 of a heat medium such as water is a fixing member 61 or each cavity in which the _{cavities 60 -1} , _60-2 , 60 _-3 , 60 _-4 , 60 _-5 , 60 _{-6 are arranged.} It is formed at 60. First, the heat medium passage W ₂₀ is arranged so as not to affect the drop of the resin molded product X at the outlet 46 located at the take-out portion 56, and the heat medium passage W ₂₁ is arranged from the take-out portion 56 to the first injection molded portion 51. , The heat medium passage W ₂₂ passes through the first cooling section 52, the heat medium passage W ₂₃ passes through the second cooling section 53, the heat medium passage W ₂₄ passes through the second injection molding section 54, and then the heat medium passage W _25. The heat medium passage W ₂₆ passes through the center side of the third cooling unit 55 and the second injection molding unit 54, and the heat medium passage W ₂₇ passes from the second injection molding unit 54 side of the second cooling unit 53 to the first cooling unit 52. The heat medium passage W ₂₈ passes through the center side of the first cooling unit 52 and the first injection molding unit 51, and when it passes through the center side of the first injection molding unit 51, heat is generated from the heat _{medium passage W 29.} The medium passage W ₃₀ and the heat medium passage W 31 rotate counterclockwise and are discharged from _{the output W2 OUT.}

In the heat medium passage W1 and the heat medium passage W2, the heat medium is constantly circulated in the mold, and the entire mold is cooled. However, it does not affect the fluidity of the resin injected by injection molding. Further, the heat medium passage W1 and the heat medium passage W2 also supply the rotating portion, but basically, the movement of the heat medium is restrained by the lubricating O-ring 38 on the central member 32, and the heat medium passage W1 is used. , W2 can be moved freely.
Further, the oil-free material mounting plate 36 seals between the rotating mold 30 and the main frame body 69 with a sealing material 37 to prevent leakage of the heat medium. Of course, it also includes those that simply seal without using oil.

The cavity 60 _-1 core 40 _-1 corresponds cavity 71 of the first formed by injection molding section 51 resin processed article X is provided. The cavity 71 is injection molded via the valve gate 80. Since the resin molded product X formed by the first injection molded portion 51 is constantly cooled, its shape is maintained by cooling the heat medium. When the mold is opened and tightened on the parting surface 70, the timing rod 11 reciprocates left and right, the ratchet mechanism 10 operates, the rotating mold 30 rotates 60 degrees, and the locus of each core 40 also rotates in the same manner. Move.
That is, each cavity 60 opens between each core 40 due to the mold opening, and the ratchet mechanism 10 operates so as to rotate the rotating mold 30 in a spiral shape by 60 degrees. During this time, each of the opened cavities 60 is avoided to the left so as to allow the rotation of each core 40. Then, when the ratchet mechanism 10 rotates the rotating mold 30 by 60 degrees, each cavity 60 that has been opened returns to the original position so as to accommodate each core 40, and accommodates each corresponding core 40.
However, in the present embodiment, the first injection molding unit 51 and the second injection molding unit 54, the first cooling unit 52, the second cooling unit 53, and the third cooling unit 55 have the same cooling structure. , Each core 40 and each cavity 60 have the same shape.

For example, when the parting surface 70 opens the molds of each core 40 and each cavity 60 and the timing rod 11 reciprocates once in the left-right direction of FIG. 2, the ratchet mechanism 10 operates during that time and is fixed at a predetermined position.
The cavities 71 of each core 40 and each cavity 60 are from cavity 60 _-1 to cavity 60 _-3 , and from core 40 _-1 to core 40 _-3 are from cavity 60 _-1 to cavity 60 _-3 , from core 40 _-1. There is no change in shape of cores _40-3.
In the cavities _60-4 , the thickness of the cavities 72 changes. The cavity 72 does not simply mean [cavity 72> cavity 71], but means [cavity (71 + 72)> cavity 71] from the molding result as a resin.

The rotating die 30, for example, the cavity 72 of the core 40 _-4 and the cavity 60 _-4 it from to the hollow 71 is formed as a resin processed article X, the cavity 60 _-4 the difference as the cavity 72 Modified, in the present embodiment, the second injection molding section 54 is injection molded from the valve gate 80 via the hot runner 90. Further, the resin processed product X molded in two colors as the cavity 72 of the second injection molding portion 54 is cooled by the heat medium passage W1 and the heat medium passage W2 of a heat medium such as water.
Therefore, although the resin processed product X is formed by the cavity 72 as a two-color molding, a cavity can be further provided on the outer periphery thereof and formed as a three-color molding.

Then, in the second injection molding unit 54, at the _{same time as the core 40 -4} and the cavity 60 _-4 are opened on the parting surface 70, the timing rod 11 reciprocates to the left and right in FIG. 2, and the ratchet mechanism 10 moves to the right. It is rotated, and then, as if the ratchet mechanism 10 was rotated to the left, the ratchet gear 14 and the pawl blade 15 are engaged with each other to rotate between the cylinder 13 and the timing rod 11.
Here, the core 40 _-4 increases by the cavity 72, the cavity 60 _-4 is changed to the cavity 60 _-4 by adding a cavity 72, the shape is maintained by cooling by the heat medium.
The _{cavity 60-4} corresponding to the _{core 40-4} is formed by the first injection molding portion 51, and the cavity 72 is set in addition to the cavity 71 of the resin processed product X. The cavity (71 + 72) is injected through the valve gate 80 until the cavity 72 is filled. The shape of the resin processed product X formed by the first injection molding section 51 is maintained by cooling with a heat medium. In this state, the mold is opened, separated by the parting surface 70, the timing rod 11 moves to the left in FIG. 2, the ratchet mechanism 10 operates, the rotation mold 30 is rotated 60 degrees, and the core 40 _-4. Is the same, cavity 60 _-4 is changed to cavity 60 _-5. In the present embodiment, the third cooling unit 55 performs the same cooling as the first cooling unit 52 and the second cooling unit 53, but the size of the _{cavity 60-4 is changed in the second injection molding unit 54.} There, third cooling section 55 is not be the same as the cavity 60 _-2 of the first cooling portion 52 and the second cooling section 53.

That is, the cavity (71 + 72) of the resin processed product X is cooled by the third cooling unit 55, the cores _40-5 and the cavities _60-5 are opened on the parting surface 70, and the timing rod 11 moves in the left-right direction in FIG. moved, ratchet mechanism 10 is operated, to rotate the rotating die 30, a respective core 40 is the same, is changed to the cavity 60 _-5 to cavity 60 _-5 is added to the cavity 72, the cooling by the heat medium Maintains shape.

Then, in the take-out portion 56, the cavities _60-6 are vertically opened, and the timing rod 11 moves to the left in FIG. 2 due to the mold opening, and the resin processed product X formed by the second injection molding portion 54. is further cooled by the third cooling unit 55 is pushed out from the core 40 _-6, it falls freely.

In the injection molding rotary mold of the present embodiment, the center of the locus of the _{cores 40 -1} , _40-2 , 40 _-3 , 40 _-4 , 40 _-5 , 40 _{-6 is set on the parting surface 70 having a radius R. The cores 40 -1} , 40 _-2 , 40 _-3 , 40 _-4 , 40 _-5 , 40 _-6 do not rotate due to each mold opening and molding. Will be done.
In the present embodiment, the cores are molded into _{cores 40 -1} , _40-2 , 40 _-3 , 40 _-4 , 40 _-5 , 40 _{-6 with a probability of 1/6.} That is, for example, when viewed from the cavity 60 _-1, the core 40 _-1, 40 _-2, 40 _-3, 40 _-4, 40 _-5, is clamping the order of 40 _-6, the resin processed article from the take-out portion 56 X is pushed out and falls freely.

In the above embodiment, the first cooling unit 52 (cooling unit), the second cooling unit 53 (cooling unit), and the third cooling unit 55 (cooling unit) are formed by the first injection molding unit 51 and the second injection molding unit 54. Although it is provided later, depending on the type of the resin molded product X, it may be sufficient to provide only one cooling portion after the injection molded portion. Moreover, you may provide a plurality of places.
Further, when the present invention is carried out, either the cavity 71 to be injection-molded by the first injection molding section 51 or the cavity 72 to be injection-molded by the second injection molding section 54 may be formed thicker.

FIG. 6 is an injection molding rotary mold of another embodiment. In the present embodiment, the same symbols and the same symbols as those in the above embodiment are the same or corresponding functional parts, and thus the duplicate description thereof will be omitted here.
In the present embodiment, the servomotor 100 that can be externally controlled is used instead of the ratchet mechanism 10. The servomotor 100 is connected to the encoder 110 and has a structure capable of accurately outputting a rotation angle, for example, 60 degrees. The output of the servomotor 100 meshes with the gear 31 via the gear 120, and the rotation mold 30 rotates.
When this servomotor 100 is used, it is possible to omit the timing rod 11 having high mechanical accuracy, which forms a moving path 20 for inserting a twist in which the roller unit 16 rotates 60 degrees while rolling, so that it can be economically operated. It is possible.
Further, the rotation speed output or the rotation angle output is output while being measured by the encoder 110, and an accurate output can be output. Further, the software can handle changes in each core 40 and each cavity 60.

That is, when the injection molding rotary mold of this embodiment is regarded as an apparatus, the locus of the radius R having the center line LL as a concentric circle is drawn, and the distance from the center line LL is made uniform to form the resin molded product X. Each core 40 and each cavity are provided with a core 40 for partially molding and each cavity 60 for forming the rest of the resin molded product X by making the distance from the center line LL uniform as in the core 40. The 60 is formed with a first injection molding portion 51 in which the molded cavity 71 formed between each core 40 and each cavity 60 can be filled with resin, and a first injection molding portion 51 filled with resin. A second injection-molded part 54 that can be filled with the same resin or another resin in the new cavity 72, and a take-out part 56 that separates and takes out the resin molded product X from each core 40 and each cavity 60. It has a heat medium that lowers the mold temperature of each core 40 and each cavity 60 and the resin temperature of the resin molded product X, and is between the first injection molding section 51 and the second injection molding section 54, and the second injection molding. It is provided with cooling units (first cooling unit 52, second cooling unit 53, third cooling unit 55) arranged in the range of one to three between the unit 54 and the extraction unit 56.

Considered as a manufacturing method of the injection molding rotary mold of this embodiment, a locus of radius R having a center line LL as a concentric circle is drawn, and the distance from the center line LL is made uniform to be one of the resin molded products X. Each core 40 for forming a portion and each cavity 60 for forming the rest of the resin molded product X by making the distance from the center line LL uniform as in each core 40 are provided. The cavity 60 includes a first injection molding step including a first injection molding section 51 capable of filling a molded cavity 71 formed between each core 40 and each cavity 60 with resin, and a first injection molding section 51. A second injection molding step including a second injection molding portion 54 capable of filling the same resin or another resin into a new cavity 72 formed in a state of being filled with a resin in the first injection molding step comprising the same resin or another resin. A take-out step consisting of a take-out portion 56 for taking out the resin molded product X from each core 40 and each cavity 60, and heat for lowering the mold temperature of each core 40 and each cavity 60 and the resin temperature of the resin molded product X. The second injection molding of the second injection molding part 54 and the take-out part 56 between the first injection molding step including the first injection molding part 51 and the second injection molding step consisting of the second injection molding part 54 having a medium. An invention comprising a cooling process including cooling units (first cooling unit 52, second cooling unit 53, third cooling unit 55) arranged in the range of one to three between the process and the extraction process. You can also do it.

Therefore, when the resin temperature is at a high temperature at which injection is performed, the first injection molding portion 51 fills the cavity 71 formed between the molded core 40 and the cavity 60 with resin. The filled resin cools the mold temperature and the resin temperature by one or more cooling units (first cooling unit 52 and second cooling unit 53) according to the volume thereof. The second injection molding section 54 fills the new cavity 71 formed with the first injection molding section 51 filled with the resin again. Next, the filled resin is cooled by one or more cooling units (third cooling unit 55) according to its volume, and the molded resin X cooled by the cooling unit (third cooling unit) is released from the mold. Since the resin molded product is taken out by the take-out part 56, the first injection-molded part 51, the second injection-molded part 54, and the take-out part 56 have uniform processing times, but the overall processing time is shortened. can do.
In particular, when the present invention is carried out, for example, two or more dies facing each other of each core 40 and each cavity 60 are arranged, and the first injection molding unit 51 is individually placed between the plurality of arranged dies. The processing times of the first cooling unit 52 (cooling unit), the second cooling unit 53 (cooling unit), the second injection molding unit 54, the third cooling unit 55 (cooling unit), and the take-out unit 56 are made the same in one rotation. (The start to end times of each process are the same), and since it is commercialized as a resin molded product X, high-speed processing by real-time processing becomes possible.

Further, since the second injection molding portion 54 is filled with the resin again with respect to the new cavity 72 formed in the state where the first injection molding portion 51 is filled with the resin, the surface of the resin molded product X is further filled. By reducing the thickness of the resin, laminated molding with less sink marks becomes possible.
Further, of the first injection molding unit 51, the first cooling unit 52 (cooling unit), the second cooling unit 53 (cooling unit), the second injection molding unit 54, the third cooling unit 55 (cooling unit), and the take-out unit 56. Each step can be miniaturized because each cavity surface of each core 40 and each cavity 60 can be set to the minimum. Then, high-speed molding becomes possible. Furthermore, multicolor printing and, in addition, multicolor molding are possible.
Further, with respect to the new cavity 72 formed in the state where the first injection molding portion 51 is filled with the resin, if the second injection molding portion 54 is again used as a resin for tampo printing or the like in the new cavity 72, the printing resin Can be filled and post-processes of tampo printing can be included.
In addition, in the mold, the first injection molding section 51, the first cooling section 52 (cooling section), the second cooling section 53 (cooling section), the second injection molding section 54, and the third cooling section 55 (cooling section). , The take-out section 56 moves in each process cycle, and at the same time, the first injection molding section 51, the first cooling section 52 (cooling section), the second cooling section 53 (cooling section), the second injection molding section 54, and the third Since the steps of the cooling unit 55 (cooling unit) and the take-out unit 56 are performed, the configuration of the entire mold becomes compact.

Therefore, the injection molding rotary mold according to the embodiment of the present invention reduces the waste of heat energy for obtaining the resin molded product X, can process resin injection, cooling, and molding at the same time, and until the resin molded product X is obtained. Molding cycle can be shortened.

Further, in the injection molding rotary mold of the present embodiment, the center line LL of the center member 32, which is the rotation center of each of the plurality of cores 40, is set, and the center line LL is rotated in a specific direction. Each core 40 is free to form a plurality of resin molded products X by making the distance R from the center line LL of the parting surface 70 uniform, and like each core 40, from the center line LL. The distance R of the parting surfaces 70 is made equal, each cavity 60 for forming a plurality of resin molded products X is provided, and the cavity 71 formed between each molded core 40 and each cavity 60 is filled with resin. In a state where the first injection molding section 51 and the cavity 71 of the first injection molding section 51 are filled with resin, a heat medium for cooling the resin filled in the cavity 71 is supplied to the heat medium passages W1 and W2 to form a mold. Again, for the first cooling section 52 and the second cooling section 53, which are composed of one or more for lowering the temperature and the resin temperature, and the new cavity 72 formed in the state where the first injection molding section 51 is filled with resin, again. The second injection molding section 54 that fills the new cavity 72 with resin and the heat medium that cools the filled resin in the second injection molding section 54 are supplied to the heat medium passages W1 and W2, and the mold temperature and the mold temperature are adjusted. It is provided with a third cooling unit 55 composed of one or more for lowering the resin temperature, and a take-out unit 56 for releasing the resin molded product X cooled by the third cooling unit 55 and taking out the resin molded product X.

Therefore, when the resin temperature is at a high temperature at which the resin is injected, the first injection molding portion 51 fills the cavity 71 formed between the molded cores 40 and the cavities 60 with the resin. The filled resin lowers the mold temperature and the resin temperature by the first cooling unit 52 and the second cooling unit 53, which are composed of one or more, according to the volume thereof. The second injection molding section 54 fills the new cavity 72 with resin again, as opposed to the new cavity 71 formed in the state where the first injection molding section 51 is filled with resin. Next, the filled resin is cooled by the third cooling unit 55 composed of one or more, the molded resin cooled by the third cooling unit 55 is released from the mold, and the take-out unit 56 is used. Since the resin molded product X is taken out, each step of the first injection molding part 51, the first cooling part 52, the second cooling part 53, the second injection molding part 54, the third cooling part 55, and the taking out part 56. Although each process time is uniform, the total processing time can be shortened.
In particular, when the present invention is carried out, for example, two or more dies facing each other of each core 40 and each cavity 60 are arranged, and the first injection molding unit 51 is individually arranged between the plurality of arranged dies. , The processing time of each process of the first cooling unit 52, the second cooling unit 53, the second injection molding unit 54, the third cooling unit 55, and the take-out unit 56 is the same (the start to end times of each process are the same). Since it is possible to process at the same time, high-speed processing by real-time processing becomes possible.

In particular, with respect to the new cavity 71 formed in a state where the first injection molding portion 51 is filled with resin, the second injection molding portion 54 can once again fill the new cavity 72 with resin, and the thickness thereof. By making the thickness thinner, it is possible to perform laminated molding with less sink marks.
Further, each step of the first injection molding section 51, the first cooling section 52, the second cooling section 53, the second injection molding section 54, the third cooling section 55, and the take-out section 56 is performed on each core 40 and each cavity 60. The cavity surfaces 70 can be set to the minimum, and high-speed molding becomes possible. Furthermore, multicolor printing and, in addition, multicolor molding are possible.

Then, if the second injection molding portion 54 is made of a resin such as tampo printing again for the cavity 71 formed in the state where the first injection molding portion 51 is filled with the resin, the resin can be filled. A post-process of tampo printing can be included.
In addition, the first injection molding section 51, the first cooling section 52, the second cooling section 53, the second injection molding section 54, the third cooling section 55, and the take-out section 56 move in each process cycle in the mold. The overall configuration becomes compact.
Therefore, the injection molding rotary mold of the above embodiment reduces the waste of heat energy for obtaining the resin molded product X, can process resin injection, cooling, and molding at the same time, and molds until the resin molded product X is obtained. The cycle can be shortened.

In the injection molding rotary mold of the above embodiment, each core 40 in which the center line LL of the center member 32 is rotatable about the center line LL is such that the center line LL is aligned in the horizontal direction and the resin is formed. The take-out portion 56 for taking out the molded product X is set as the lowermost portion, and the resin molded product X is dropped from the take-out portion 56 and taken out.
Each core 40, which is rotatable about the center line LL of the center member 32 in the injection molding rotary mold of the above embodiment, aligns the center line LL of the center member 32 in the horizontal direction and Since the take-out portion 56 for taking out the resin molded product X is set as the lowermost portion and the resin molded product X is dropped from the take-out portion 56 and taken out, each core 40 which is rotatable around the center line LL. Since the resin molded product X rotates based on the horizontal axis, if the resin molded product X can be freely dropped at the lowermost portion of the take-out portion 56, energy-saving manufacturing can be performed to take out the resin molded product X.

In the injection molding rotary mold of the above embodiment, each core 40 that is rotatable around the center line LL is stepped in a specific rotation direction by each core 40 that meshes with the ratchet mechanism 10. , The first injection molding section 51, the first cooling section 52, the second cooling section 53, the second injection molding section 54, the third cooling section 55, and the take-out section 56.
Each core 40 that is rotatable about the center line LL in the injection molding rotary mold of the above embodiment is driven in a specific rotation direction by each core 40 that meshes with the ratchet mechanism 10. 1 Since it rotates in the directions of the injection molding unit 51, the first cooling unit 52, the second cooling unit 53, the second injection molding unit 54, the third cooling unit 55, and the take-out unit 56, it is specified by the mechanical rotational force. Can rotate in a direction.

Each core 40, which is rotatable around the center line LL in the injection molding rotary mold of the above embodiment, has a specific rotation direction, a first injection molding section 51, and a first cooling section due to the rotation of the servomotor 100. It is also possible to advance in the order of 52, the second cooling unit 53, the second injection molding unit 54, the third cooling unit 55, and the take-out unit 56.

Each core 40, which is rotatable around the center line LL, has a specific rotation direction, a first injection molding section 51, a first cooling section 52, a second cooling section 53, and a second in a specific rotation direction due to the rotation of the servomotor 100. Since the injection molding unit 54, the third cooling unit 55, and the take-out unit 56 are advanced in this order, they can be rotated in a specific direction by a mechanical rotational force.

Each core 40, which is rotatable around the center line LL in the injection molding rotary mold of the above embodiment, is stepped in a specific rotation direction, so that a total of two to four first injection moldings are formed. It is molded by arranging an injection molding part such as a part 51, a cooling part such as a total of 2 to 4 first cooling parts 52 and a second cooling part 53, and a taking-out part 56 at one place.
Here, since the first injection molding portion 51 fills the cavity 71 formed between the molded cores 40 and the cavities 60 with resin, two or four locations depending on the thickness and total amount of the resin. It can be divided into. In particular, since at least two locations are maintained, two-color molding or multicolor molding can be performed.
Further, the first cooling unit 52, the second cooling unit 53, etc. at a total of two locations are the steps of obtaining the resin molded product X of at least two colors, and the two or more locations depending on the thickness of the resin molded product X. Assuming that the volume of the resin needs to be cooled, it is preferable to treat the resin as cooling portions at 2 to 4 locations in total.

In the injection molding rotary mold of the above embodiment, the center line LL of the central member 32 which is the rotation center of the plurality of cores 40 is set, and the center line LL is made rotatable in a specific direction. Each core 40 in which a plurality of resin molded products X can be molded by making the distance R from the center line LL of the parting surface 70 uniform, and the parting surface from the center line LL like each core 40. In an injection-molded rotary mold provided with each cavity 60 forming a plurality of resin molded products X by equalizing the distances R of 70, the cavity 71 formed between each molded core 40 and each cavity 60. With the first injection molding section 51 filled with the resin and the cavity 71 of the first injection molding section 51 filled with the resin, a heat medium for cooling the resin filled in the cavity 71 is supplied to the heat medium passages W1 and W2. For the first cooling unit 52 and the second cooling unit 53, which are composed of one or more to lower the mold temperature and the resin temperature, and the new cavity 72 formed in a state where the first injection molding unit 51 is filled with resin. Again, the second injection molding unit 54 that fills the new cavity 72 with resin and the heat medium that cools the filled resin in the second injection molding unit 54 are supplied to the heat medium passages W1 and W2, and the gold A third cooling unit 55 composed of one or more that lowers the mold temperature and the resin temperature, and a take-out unit 56 that separates the resin molded product X cooled by the third cooling unit 55 and takes out the resin molded product X are provided. It can be an injection molding method.

Since the injection molding rotary mold of the above embodiment is also used in the injection molding method of this embodiment, waste of heat energy for obtaining the resin molded product X is reduced, and resin injection, cooling, and molding can be performed. It can be processed at the same time, and the molding cycle until the resin molded product X can be obtained can be shortened.

LL Center line X Resin molded product 11 Timing rod 16 Roller unit 20 Movement path 32 Center member 40 Core 51 First injection molding part 52 First cooling part 53 Second cooling part 54 Second injection molding part 55 Third cooling part 56 Extraction part 60 Cavity 70 Parting surface 71, 72 Cavity 75 Parting line 80 Valve gate 90 Hot runner 100 Servo motor 110 Encoder 120 Gear

Claims (1)

A core that draws a radius locus with the center line as a concentric circle and molds a part of the resin molded product with a uniform distance from the center line.
Similar to the core, each cavity having a uniform distance from the center line and forming the rest of the resin molded product is provided.
The core and each cavity
A first injection-molded portion capable of filling a molded cavity formed between the core and each cavity with a resin,
A second injection-molded part that can be filled with the same resin or another resin into a new cavity formed in a state where the first injection-molded part is filled with resin.
A take-out part for releasing and taking out the resin molded product from the core and each cavity,
It has a heat medium that lowers the mold temperature of the core and each cavity and the resin temperature of the resin molded product, and is between the first injection molding unit and the second injection molding unit, and the second injection molding unit. And the cooling unit arranged in the range of 1 to 3 between the take-out unit and
The core that draws a locus of radius with the center line as a concentric circle has the center line aligned in the horizontal direction, and the take-out portion for taking out the resin molded product is at the lowermost position, and the resin molded product is taken out from the take-out portion. An injection-molded rotary mold characterized in that the plastic is dropped and taken out.

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