JPH066302B2 - Powder slush molding machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a powder slush molding apparatus used for manufacturing automobile interior materials and the like.

[Prior Art] A powder slush molding apparatus used for manufacturing an interior material of an automobile is conventionally known. For example, JP-A-63-
In Japanese Patent No. 239017, the mold supporting rectangular framework is sequentially returned from the mold mounting / demounting station to the mold mounting / demounting station via a mold preheating station, a powder casting station, a cure heating station, and a mold cooling station. A continuous molding device is disclosed.

[Problems to be Solved by the Invention] However, since this known molding apparatus transfers the mold supporting rectangular frame assembly through a linear conveyor, a long installation space is required and the conveyor mechanism is also required. Had the drawback of being complicated. In particular, regarding the latter, in powder casting citration, since it is necessary to invert the mold supporting rectangular frame assembly, it has to be provided on the conveyor equipped with this inversion mechanism, and therefore the complication is remarkable. It was

Therefore, in order to eliminate such a drawback, for example, as disclosed in Japanese Patent Laid-Open No. 62-50106, a reversing device is mounted on a turntable, and a metal mold is attached to a horizontal axis of the reversing device. A so-called turntable-type molding apparatus, which is configured by mounting a supporting rectangular frame assembly, has been attracting attention.

However, in all of these molding apparatuses, the mold heating in the mold preheating station was performed by gas burning or hot air, so the time required for preheating the mold to a predetermined temperature was compared. It has a drawback that various problems must be solved such as unfavorable nonuniformity with respect to the temperature distribution of the mold, which tends to occur.

Therefore, even if it is called a continuous molding device, it is not enough as a continuous molding device depending on the preheating of the mold, which requires the longest processing time among the series of various steps required for molding. The function (productivity) was not satisfied.

The present invention pays attention to such a point, and as a result of earnest studies from various aspects to solve this, by heating the mold in the mold preheating station, by performing hot air heating following infrared heating of a plurality of stages. Have found that the above problems can be solved all at once.

[Means for Solving the Problems] That is, the powder slush molding apparatus according to the present invention is provided with a turntable mounted so as to be intermittently driven and rotated in one direction, and a horizontal shaft mounted so as to be driven and rotated. A plurality of reversing devices radially mounted on the turntable so as to project the tip end of the turntable outward from the outer peripheral surface of the turntable, and a mold supporting rectangular frame assembly attached to the tip end of the horizontal shaft. So that the mold supporting rectangular framework can be sequentially returned from the mold mounting / demounting station to the mold mounting / demounting station via a mold preheating station, a powder casting station, a cure heating station, and a mold cooling station. In the powder slush molding apparatus configured in, the mold preheating station, a plurality of infrared heating zone and And a hot air heating zone, and the hot air heating zone is positioned and arranged on the powder casting station side.

[Embodiment] An embodiment will be described below with reference to the drawings. In FIG. 1, which is a plan view, 1 is a turntable, 2 is a reversing device, 3 is a mold supporting rectangular frame assembly, and a reversing device 2 is shown. Is mounted on the turntable 1 in a radial manner, and the mold supporting rectangular frame assembly 3 is mounted on the tip of the horizontal shaft 4 of the reversing device 2. The turntable 1 is mounted so as to be intermittently driven and rotated rightward.

That is, in FIG. 2 which is a longitudinal sectional view, the turntable 1 intermittently rotates the motor 5 fixed to the turntable 1 to rotate the gear 6 fixed to the lower end of the output shaft of the turntable 1. It is installed so that it can

The gear 7 meshed with the gear 6 is fixed to the table support 8 and the table support 8 is a base 9.
Is stuck to. Further, a plurality of rollers 10 are mounted on the upper end of the table support 8 and a plurality of wheels 11 are fixed to the base 9, and guided by these to rotate.

Next, in the reversing device 2, in FIG. 3, which is a front view, the device frame 15 is fixed on the turntable 1, and the horizontal shaft 4 is supported by a pair of bearings 16 fixed to the frame 15. The tip of the horizontal shaft 4 is projected outward from the outer peripheral surface 17 of the turntable 1, and the shaft of a rotary encoder 18 is connected to the rear end of the horizontal shaft 4.

The rotary encoder 18 is mounted on the mounting frame 1
Is fixed to the bracket 19 fixed to 5, and
The gear 20 fixed to the horizontal shaft 4 is meshed with the gear 22 fixed to the output shaft of the motor 21 fixed to the device frame 15.

Next, the mold supporting rectangular frame assembly 3 is a pair that is opposed in the longitudinal direction (the arrow XX direction in the drawing) in FIG. 4 which is a plan view and FIG. 5 which is a right side view of FIG. Side frames 25 and a pair of side frames 26 facing each other in a direction orthogonal to the longitudinal direction (the direction of the arrow X1-X2 in the drawing) are welded together, and the side frames 25 are respectively provided on the upper surfaces of the side frames 26. The pair of hook receivers 27 are fixed by bolts, and the hook receiving holes 28 are penetrated through the hook receivers 27.

Similarly, a pair of hook receivers 29 are fixed to the lower surfaces of the pair of side frames 26 by bolts, and a hook shaft insertion hole 30 is made to penetrate therethrough. The one side frame 25 of the mold supporting rectangular frame assembly 3 is fixed to the tip of the horizontal shaft 4 via a flange 31.

Therefore, by driving the motor 21 and rotating the horizontal shaft 4 by 180 degrees, the mold supporting rectangular frame assembly 3 can be inverted or returned to the original position.
As shown by the arrow in FIG. 1, by intermittently rotating the turntable 1 to the right, the mold supporting rectangular frame assembly is sequentially returned from the position A to the position A through the positions B and CL. Can be made.

Then, when the mold supporting rectangular frame assembly 3 is transferred to the position E of the powder casting station, the rectangular powder box 35 shown in FIGS. 6 and 7 is attached to the mold supporting rectangular frame assembly 3. To be

The mold supporting rectangular frame assembly 3 has the upper surface side shown in FIG. 4 positioned downward, that is, the lower surface side, and the opposite upper surface side (upper surface shown in FIG. 4). It is transferred to the position E with an empty slush molding die attached to the bottom surface (opposite side to the side), but this die is heated to a predetermined temperature in the die preheating station as described later. It is heated.

The rectangular powder box 35 is attached to the mold supporting rectangular frame assembly 3 by the box attaching / detaching device 55 shown in FIGS. 8 and 9 arranged below the mold supporting rectangular frame assembly 3. The box 35 is moved upward and attached to the lower surface side of the mold supporting rectangular frame assembly 3.

In FIG. 8 which is a front view and FIG. 9 which is a plan view of FIG. 8, the turntable 1 is disposed on the right side, and the rectangular powder box 35 is transferred from a not-shown left side supply device. To be done.

In addition, the rectangular powder box 35 is the sixth front view.
As shown in FIG. 7 which is a front view of FIG. 6, a pair of clamp mechanisms 36 are mounted, that is, they oppose each other in a direction orthogonal to the longitudinal direction of the rectangular powder box 35 (X1-X2 direction in the drawing). The clamp mechanism 36 is attached to the outside of each of the pair of side walls 37.

Since both clamp mechanisms 36 have the same structure, only the clamp mechanism 36 on the front side will be described. This mechanism 36 has a longitudinal direction (X1-X2 in the drawing) on the outer surface of the side wall 37.
Direction)) left and right shaft support brackets 3 fixed at a predetermined interval
8, a shaft body 39 which is mounted so as to be able to move in the longitudinal direction (X1-X2 direction in the drawing) through the pair of shaft support brackets 38, and is located between the pair of shaft support brackets 38 and hooks. The driving hook 41 fixed to the shaft body 39 so that the portion 40 faces downward, the hook 41 for the drive shaft 41 and the right shaft support bracket 38, and the left end of the shaft body 39, respectively. The left and right hook brackets 42 fixed to the shaft 39 so as to project upward from the upper end, and the longitudinal direction (X1 shown in the figure, with the tips directed rightward at the upper ends of the pair of hook brackets 42).
A pair of hook pins 43 fixed in the (-X2 direction), and a side wall 4 orthogonal to the side wall 37 so as to project from the side wall 37 in a direction orthogonal to the longitudinal direction (the arrow X1-X2 direction in the drawing).
4, a locking frame 45 fixed to the outer surface of the spring body 4, and an adjuster 46 screwed to the frame 45 has one end locked and the other end locked to the right end of the shaft 39.
7, and the spring body 47 is expanded and contracted by the adjuster 46 in a predetermined manner so that the left hook bracket 42 is brought into pressure contact with the left shaft support bracket 38 and the right hook bracket 42 is brought into pressure contact with the right shaft support bracket 38. The shaft 39 is biased to the.

Therefore, by moving the hook portion 40 of the driving hook 41 to the left side by an appropriate means, the pair of hook pins 43 can be moved in the same direction, and the hook portion 40 is set in a free state. The pair of hook pins 43 can be moved to their original positions.

At that time, each of the pair of hook brackets 42 is guided and moved by the guide bar 48.
8 is inserted into a hole penetrating the shaft support bracket 38, and one end of the guide bracket 49 (this bracket 49
Is fixed to the shaft support bracket 42. ) Is fixed by tightening the nut.

On the other hand, the box attaching / detaching device 55 is, as shown in FIGS. 8 and 9, a lifter table 58 mounted so as to be vertically movable by an actuator 57 fixed to a mounting frame 56, and a front and rear of the table 58. A pair of brackets 59 fixed to both ends in the direction, and a lifter table 58 so as to be positioned between the brackets 59.
The cargo handling table 60 fixed on the top and this table 60
Is provided with a left stopper 61 fixed to the left end and a pair of pin moving devices 62, and both pin moving devices 62 have a hook insertion hole 64 at the piston rod tip of the actuator 63 fixed on the bracket 59. The hook moving jig 65 penetrating in the vertical direction is fixed, and the jig 65 is fixed.
Is engaged with a guide 66 fixed on the bracket 59 so as to be movable in the left-right direction. The lifter table 58 is mounted so that it can be moved vertically by being guided by a pair of guide bars 67.

Thus, according to this attachment / detachment device 55, the actuator 5
By projecting the piston rod of No. 7, the pallet 70 placed on the upper end of the device frame 56 can be supported by the cargo handling table 60 and moved upward, and the rod can be retracted to allow the device frame to be retracted. 56
The pallet 70 can be placed on the upper end of the.

Although this figure is shown in FIG. 8, the pallet 70 includes a rectangular frame assembly 71, a pair of free roller conveyors 72, a pair of side stoppers 73, and a right stopper 7.
4 is mounted on the upper end of the apparatus frame 56, and the powder box 35 is transferred onto the pair of free roller conveyors 72 from the left supply device (not shown).

At that time, the powder box 35 is pushed and transferred by the hook inserted in the concave portion 75 shown in FIG. When the powder box 35 is transferred onto the pair of free roller conveyors 72, the hooks are recessed 75.
And left to move to the left.

Then, the piston rod of the actuator 57 is projected and the cargo handling table 60 is moved upward together with the lifter table 58. The cargo handling table 60 contacts the lower surface of the rectangular frame assembly 71 of the pallet 70 and both pin moving devices 62. The lower ends (hook portions 40) of the driving hooks 41 of the clamp mechanisms 36 of the powder box 35 are inserted into the hook insertion holes 64 of the hook moving jig 65.

Then, the piston rod of the actuator 63 of the both-pin moving device 62 is projected, and accordingly, the hook moving jig 65.
Is moved to the left, both driving hooks 41 of the powder box 35 are also moved in the same direction (left in FIG. 6), and the two pairs of hook pins 43 are moved to the left from the position shown in FIG. It

Then, when the cargo handling table 60 is further moved upward in this state, the pallet 70 is separated from the upper end of the apparatus frame 56 and moved upward together, and is transferred to the position E of the powder casting station. The powder box 35 on the pallet 70 is brought close to the upper die supporting rectangular frame assembly 3 coming up. Then, when the upward movement is stopped and the powder box 35 is approached in a predetermined manner, the tips of the two pairs of hook pins 43 which are moved to the left side,
In FIG. 4, the hook receiving holes 27 are approached to the left side of each hook receiving member 27 and are coaxially aligned with the hook inserting holes 28 of each hook receiving member 27.

Therefore, subsequently, when the piston rods of the actuators 63 of the two pin moving devices 62 are retracted, the two pairs of hook pins 43 are moved to the right side and inserted into the hook insertion holes 23 of each hook receiver 27. , Mold support rectangular frame assembly 3
A powder box 35 is attached to the.

After that, when the piston rod of the actuator 57 of the lifter device 55 is retracted and the pallet 70 is moved downward, the lower ends (hook portions 40) of the driving hooks 41 of the clamp mechanisms 36 of the powder box 35 move by both pins. When the rod is withdrawn from the hook insertion hole 64 of the hook moving jig 65 of the device 62 and the rod is submerged in the original position,
An empty pallet 70 is placed on the upper end of the device frame 56.

Next, when the empty pallet 70 is moved downward in this manner, the motor 21 of the reversing device 2 is driven to drive the horizontal shaft 4
Is rotated 180 degrees, so that the mold supporting rectangular framework 3 is inverted. As a result, the powder box 35 is positioned on the upper surface side of the mold supporting rectangular frame assembly 3, and the slush molding mold is positioned on the lower surface side.
The thermoplastic resin powder is filled in the slush molding die. The resin powder was not mixed with a pyrolyzable foaming agent.

Then, after a lapse of a predetermined time (after forming the skin layer), the reversing device 2
The motor 21 is driven to rotate the horizontal shaft 41 by 180 degrees, and the mold supporting rectangular frame assembly 3 is returned to the original position. That is, as a result, the slush molding die is located on the upper surface side of the die supporting rectangular frame assembly 3 and the powder box 35 is located on the lower surface side. Therefore, the surplus thermoplastic resin powder is discharged from the slush molding die to the powder box 35.

Then, the piston rod of the actuator 57 of the box attaching / detaching device 55 is projected, the empty pallet 70 is placed on the cargo handling table 60, and moved upward.

Then, when the cargo handling table 60 is moved to a predetermined position,
The lower ends (hook portions 40) of the driving hooks 41 of both the clamp mechanisms 36 of the powder box 35 are fixed to the both pin moving device 6.
No. 2 is inserted into each hook insertion hole 64 of the hook moving jig 65, and then the piston rod of the actuator 63 is projected to move the driving hooks 41 to the left side in FIG. The hook pins 43 of the powder box 35 are extracted from the hook insertion holes 28 of the hook receivers 27 of the frame body 3 to separate the powder box 35 from the mold supporting rectangular frame body 3, and a pair of free pallets 70 are free. It is placed on the roller conveyor 72.

Hereinafter, a pallet 70 on which the powder box 35 is placed
Is moved downward together with the cargo handling table 60 and placed on the upper end of the device frame 56. In addition, when moving the powder box 35 up and down, the powder box 35
The horizontal movement of the pair of side stoppers 7
3 and the right stopper 74 and the left stopper 61 prevent each other.

When the formation of the first layer is completed as described above, the turntable 1 is subsequently rotated to move from the position E in the figure to the position F.
The mold supporting rectangular framework 3 is transferred to the position. The box attaching / detaching device 55 is also arranged here, and accordingly,
Similar to the above, the powder box 35 can be molded through the steps of attaching and detaching the powder box 35 to and from the mold supporting rectangular frame assembly 3 via the pallet 70.

In addition, here, a mixture of a pyrolytic foaming agent and a thermoplastic resin powder is filled from the powder box 35 into a slush molding die, and an unfoamed resin layer (second layer) is formed on the skin layer. Molded. The reason why the foaming does not occur is that the slush molding die is cooled with time and is below the foaming temperature.

After finishing the second layer molding at the position F of the powder casting station, the turntable 1 is rotated to
The mold supporting rectangular framework 3 is transferred from the position of 1 to the position of G of the cure heating station.

This curing heating station is provided with a hot air heating chamber having a heat insulating structure, and an elevating shutter is attached to the entrance and exit of this chamber to raise and lower in a predetermined manner in relation to the transfer of the mold supporting rectangular frame assembly 3. Controlled.

At the position F, the slush molding die is located on the lower surface side of the die supporting rectangular frame assembly 3, but after heating for a certain period of time, the turntable 1 is rotated and transferred to the position H, and The mold supporting rectangular frame assembly 3 is inverted and the slush molding mold is positioned on the upper surface side of the mold supporting rectangular frame assembly 3, and the second layer is foamed by heating for a certain period of time to form a foamed resin layer. To be done.

Next, after heating for a certain time at the position H of the cure heating station, the turntable 1 is rotated and the mold supporting rectangular framework 3 is transferred to the mold cooling station. Here, a cooling chamber that can supply water and cold air is provided,
At the outlet of this chamber, an elevating shutter is mounted, which is associated with the transfer of the mold supporting rectangular frame assembly 3 and is controlled to elevate in a predetermined manner. In this chamber, water and cold air are jetted from above the slush molding die located on the upper surface side of the die supporting rectangular frame assembly 3.

Then, after cooling for a certain period of time, the turntable 1 is rotated, and the mold supporting rectangular frame assembly 3 is moved to the mold attaching / detaching station J
Be transferred to the position. Then, the motor 21 of the reversing device 2
Is driven to rotate the horizontal shaft 4 by 180 degrees, and the mold supporting rectangular frame assembly 3 is inverted. That is, the slush molding die is thereby positioned on the lower surface side of the die supporting rectangular frame assembly 3.

Then, the slush molding die is removed from the die supporting rectangular frame assembly 3 by the die attaching / detaching device 80 shown in FIGS. FIG. 10 is a front view and FIG. 11 is a left side view of FIG. 10, but in FIG. 10, the turntable 1 is arranged on the right side.

In both figures, the mold attaching / detaching device 80 includes a pair of rails 81.
A carriage 82 that can be guided and moved by a carriage 82, a movable frame 84 that is mounted on the carriage 82 so as to be able to move up and down via an actuator 83 fixed to the carriage 82, and both ends of the frame 84 (see FIG. 10). (For both ends in the front-back direction)
Each of them is composed of a pair of pin moving devices 85 attached thereto, and a pair of traction devices 86 (one traction device is not shown) disposed on the left and right so as to sandwich the carriage 82 in FIG.

It should be noted that both traction devices 86 can move the truck 82 by alternately pulling the chain 87, one end of which is fixed to the lower right end of the truck 82 and the other end of which is fixed to the lower left end of the truck 82. It is configured.

Further, the pin moving device 85, like the pin moving device 62 described above, has a hook moving jig 89 in which a hook insertion hole is vertically penetrated through a tip of a piston rod of an actuator 88 fixed on a movable frame 84. And the jig 89 is engaged with a guide 90 fixed on the movable frame 84 so as to be movable in the left-right direction in FIG.

On the other hand, the slush molding die is as shown in FIG. 12, which is a front view, in the hook shaft insertion hole 30 of the hook receiver 29 of the die supporting rectangular frame assembly 3 shown in FIG. Is attached by inserting one end of the hook shaft 97 of the clamp mechanism 96 mounted on the slush molding die 95.

Although the slush molding die 95 is provided in a rectangular shape in a plan view, a pair of clamp mechanisms 96 are mounted at predetermined intervals on each of the opposing side walls in the direction orthogonal to the longitudinal direction thereof. In FIG. 12, one of the pair of clamp mechanisms 96 mounted on one side wall of the opposed side wall is shown, but the other clamp mechanism is mounted on the side opposite to the clamp mechanism 96. A pair of clamp mechanisms mounted on the other side wall of the opposing side walls are also mounted similarly.

In addition, the clamp mechanism 96 includes a slush molding die 95.
A pair of shaft support brackets 98 fixed to the upper end of the outer side surface of the side wall, a hook shaft 97 penetrating both brackets 98 so as to be movable left and right, and a hook shaft 97 located between the brackets 98. The drive hook 99 fixed to the hook shaft 97 and the spring receiver 100 fixed to the upper end of the slush molding die 95 are provided, and the spring body 101 and the hook shaft 97 are provided in the holes of the spring receiver 100. Insert one end,
The spring shaft 101 biases the hook shaft 97 so that the driving hook 99 is pressed against the left bracket 98.

When the mold supporting rectangular framework 3 is transferred to the position J of the mold attaching / detaching station, the piston rod of the actuator 83 is projected and the movable frame 84 is moved upward. At that time, the movable frame 84 is guided by the pair of guide shafts 102 and moves horizontally. 10th, 11th
In the figure, the figure is shown moved up.

Then, when the movable frame 84 is moved to a predetermined height,
The lower end (hook portion 103) of the driving hook 99 of each clamp mechanism 96 is connected to the hook moving jig 8 of each pin moving device 85.
9 are respectively inserted into the hook insertion holes. Then, the piston rod of each actuator 88 is projected, the hook moving jig 89 is moved, and each driving hook 99 is moved toward the spring body 101.

Therefore, one end of each hook shaft 97 is pulled out from the hook shaft insertion hole 30 of the hook receiver 29 of the mold supporting rectangular frame assembly 3, so that the slush molding mold 95 is extracted from the mold supporting rectangular frame assembly 3. Can be removed.

Thereafter, the piston rod of the actuator 83 is subsequently retracted, and the movable frame 84 is moved downward together with the slush molding die 95. Slush Mold 95
Is moved downward with the lower end of each drive hook 99 inserted into the hook insertion hole of each hook moving jig 89.

Then, when the movable frame 84 is moved downward, the piston rods of the respective actuators 88 are retracted and the carriage 82 is moved to the left side in FIG. 10 (the direction away from the center of the turntable in FIG. 1), Here, the molded product is demolded by the worker.

After the mold is removed, the carriage 82 is moved to the right and the mold attaching / detaching device 80 is again positioned below the mold supporting rectangular frame assembly 3. The mold attaching / detaching device 80 is an empty slush molding mold 95.
Is supported by the device 80.
5 is attached to the mold supporting rectangular framework 3.

That is, the piston rod of the actuator 83 is projected and the movable frame 84 is moved upward. that time,
The piston rod of each actuator 88 is also projected, and each hook moving jig 89, into which the lower end of each driving hook 99 is inserted, is moved upward while being moved toward the spring body 101.

Thus, when the movable frame 84 is moved to a predetermined height,
One end of each hook shaft 97 approaches the hook shaft insertion hole 30 of the hook receiver 29 of the mold supporting rectangular frame assembly 3 (one end of the left hook side 97 has the hook shaft insertion hole 3 of the hook receiver 29).
0, and one end of the right hook shaft 97 approaches the left side of the hook shaft insertion hole 30 of the hook receiver 29).
At the same time, they are aligned concentrically with the hook shaft insertion holes 30 of each hook receiver 29.

Therefore, when the piston rod of each actuator 88 is subsequently retracted, each hook shaft 97 is moved toward the hook receiver 29, and the hook shaft insertion hole 3 of each hook receiver 29 is moved.
0, and thus the empty slush molding mold 95 is attached to the mold supporting rectangular framework 3. Thereafter, the piston rod of the actuator 83 of the mold attaching / detaching device 80 is retracted, and the movable frame 84 is moved downward.

Then, when the movable frame 84 is moved downward, the mold supporting rectangular frame assembly 3 is transferred from the position J to the position K of the mold attaching / detaching station, and after a certain period of time elapses from the position K to the position L. Be transferred to. Also here, the mold attaching / detaching device 8
0 is set. Therefore, in the same manner as described above, the empty slush molding die 95 can be removed from the die supporting rectangular framework 3, the deposits can be removed therefrom, and then the die supporting rectangular framework 3 can be attached again.

It should be noted that the removal of the deposits is performed by the worker, and the mold supporting rectangular frame assembly 3 is inverted when transferred to the next mold preheating station. As a result, an empty slush molding die 95 is positioned on the upper surface side of the die supporting rectangular frame assembly 3.

Then, the turntable 1 is rotated, and the mold supporting rectangular frame assembly 3 is transferred from the position L of the mold mounting / demounting station to the position A of the mold preheating station. The mold preheating station is provided with a heating chamber having a heat insulating structure, and an elevating shutter is attached to the entrance / exit of the heating chamber, and this is equipped with a mold supporting rectangular frame assembly 3 Is controlled in a predetermined manner in relation to the transfer of

In addition, the heating chamber has three infrared heating zones A, B,
C and a hot air heating zone D, and therefore, for empty slush molding located on the upper surface side of the mold supporting rectangular frame assembly 3 that is intermittently transferred from the position A to the position D. The mold 95 can be heated with infrared rays in three stages and then heated with hot air, so that the empty slush molding mold 95 preheated to a predetermined temperature is transferred to the powder casting station as described above. Then, the slush molding can be sequentially performed in the same manner.

The three infrared heating zones A, B and C are formed in order to effectively and rapidly heat various slush molding dies 95 having different sizes and shapes. Also,
The hot air heating zone D is positioned and arranged on the powder casting station side so that the temperature variation of the slush molding die 95 heated rapidly in the infrared heating zone is within an allowable range (for example, ± 10 ° C.). (Inside), that is, it can be rapidly heated by infrared heating, but since temperature variation becomes large in this case, it is kept within an allowable range by hot air heating. Therefore, various slush molding dies 95 having different sizes and shapes can be preheated quickly and uniformly, and the function as a continuous molding device can be sufficiently exerted.

In addition, in this forming apparatus, since the reversing device is mounted on the turntable 1 and the mold supporting rectangular frame assembly 3 is mounted on the horizontal shaft 4 of the reversing device 2, a long installation space is not required. In addition, it is mechanically simplified, and the molding cycle can be easily changed, and good continuous molding can be performed.

The horizontal shaft 4 can be driven and rotated in either the left or right direction, and during slush molding during molding of the skin layer (first layer) and during molding of the unfoamed resin layer (second layer) on the skin layer. The mold 95 can be driven and rotated at a predetermined angle so as to swing.

In FIG. 4, reference numeral 105 indicates a roller rotatably mounted on the mold supporting rectangular frame assembly 3, and the rollers 105 are mounted on respective stations when the mold supporting rectangular frame assembly 3 is transferred. Do not drive on rails.

Further, in FIGS. 4 and 5, 106 is a positioning bracket 10.
7 shows a positioning pin fixed to the slash molding die 95, which is inserted into a hole of the slush molding die 95 when the slash molding die 95 is attached to the die supporting rectangular frame assembly 3. Position 95.

The positioning bracket 107 fixed to the side frame 26
The upper end of the slush molding die 95 is brought into contact with the lower surface.
In FIG. 8, 108 is a stopper for the lifter table 58, which are fixed to the apparatus frame 56.

Although one embodiment according to the present invention has been described above, in the present invention, the slush molding die 95 may be located on the lower surface side of the die supporting rectangular frame assembly 3 at the position F.

[Advantages of the Invention] As described above, according to the present invention, a long installation space is not required, the mechanism is simplified, and the molding cycle can be easily changed, and good continuous molding can be performed. In addition, various slush molding dies having different sizes and shapes can be preheated quickly and uniformly, and the function as a continuous molding device can be fully exerted, thereby improving productivity. It is possible to obtain a powder slush molding device capable of

[Brief description of drawings]

1 to 12 show an embodiment according to the present invention, FIG. 1 is a plan view of a powder slush molding apparatus, FIG. 2 is a vertical sectional view of a turntable, FIG. 3 is a front view of a reversing apparatus, and FIG. FIG. 5 is a plan view of a mold supporting rectangular frame assembly, FIG. 5 is a right side view of FIG. 4, FIG. 6 is a front view of a powder box, FIG. 7 is a plan view of FIG. 6, and FIG. 8 is a box. FIG. 9 is a front view of the mold attaching / detaching device, FIG. 11 is a front view of the mold attaching / detaching device, FIG. 11 is a left side view of FIG. 10, and FIG. 12 is a mold supporting rectangular frame. It is a front view which shows the state which attached the slush molding die to the body. 1 ... Turntable, 2 ... Reversing device, 3 ... Mold supporting rectangular frame assembly, 4 ... Horizontal axis

Claims (1)

[Claims] 1. A turntable mounted so as to be capable of intermittent drive rotation in one direction, and a tip of a horizontal shaft mounted for drive rotation so as to project outward from an outer peripheral surface of the turntable. A plurality of reversing devices radially mounted on the turntable, and a mold supporting rectangular frame assembly mounted at the tip of the horizontal shaft, and the mold supporting rectangular frame assembly is a mold attaching / detaching station. In the powder slush molding apparatus configured to be sequentially returned to the mold attaching / detaching station through a mold preheating station, a powder casting station, a cure heating station, and a mold cooling station, the mold preheating station. Is composed of a plurality of infrared heating zones and a hot air heating zone, and the hot air heating zone is provided with the powder injection. Powder slush molding apparatus is characterized in that arranged in allowed position the station side.