JP7002174B2 - Mold transfer structure - Google Patents

Description

The present invention relates to a mold transport structure for interchangeably transporting a plurality of molds to a molding machine such as an injection molding machine or a blow molding machine.

Conventionally, one mold is used for molding for one injection molding machine or blow molding machine 140, but since the injection molding machine and the blow molding machine are large, the installation space is large and the power consumption is large. Become.
Therefore, as shown in FIG. 6, there is one that molds by using two molds 110 and 111 for one blow molding machine 140.

In this case, as shown in FIG. 7, the split mold of one of the molds 110 is attached to the mold mounting plates 141 and 141 of the blow molding machine 140, and the parison 2 is sandwiched in the cavity and blow molded. On the other hand, the mold 111 holds the already blow-molded molded product 150 in the cavity and cools it.

When one mold 110 finishes molding, as shown in FIGS. 8 to 11, one mold 110 is removed from the blow molding machine 140, cooled, and the molded product 150 is taken out from the other mold 111. At the same time, the other mold 111 is attached to the blow molding machine 140 to perform blow molding. This is repeated.

In this case, when the molded product 150 is a large product such as a fuel tank, a large space such as a mold transfer device or a mold moving table is required to slide the large molds 110 and 111. ..

Although it is a press die, there is also one in which two press dies, the first die 211 and the second die 212, are moved to a press machine for press molding. In this case, as shown in FIGS. 12 to 14, the first die 211 and the second die 212, which are press dies, are placed on the common base 213, and the common base 213 is placed on the drive shaft 214. There is a device that is fixed with a coupling pin 215 to move the drive shaft 14 (see, for example, Patent Document 1).

The movement of the drive shaft 214 is such that the pinion 217 is fitted to the rack 216 formed on the lower surface of the drive shaft 214, and the pinion 217 is rotated by a motor (not shown).
The drive shaft 214 is mounted so as to move on a guide rail (not shown) and is moved by a motor. However, in this case, in press molding, the first mold 211, the second mold 212, the common base 213, and the drive shaft 214 are moved to the left and right, and the apparatus becomes large, so that the first mold 211 and the first mold 211 are used. It does not move only the second mold 212.

Japanese Unexamined Patent Publication No. 2-11230

Therefore, the present invention provides a mold transfer device capable of reliably transporting a mold by reducing an installation space in a mold transport structure for transporting a plurality of molds to a molding machine in an exchangeable manner. Is the subject.

The present invention of claim 1 for solving the above-mentioned problems is in a mold transport device structure for interchangeably transporting a plurality of molds to a molding machine.
Two mold moving tables having a mold moving rail for moving the mold are provided in parallel, a groove between the rails is provided between the two mold moving tables, and a groove is provided between the two mold moving tables on the lower surface of the mold moving rail of the mold moving table. A mold moving rack for meshing gears is provided.
A mold engaging protrusion is provided at each side end of the mold split mold, and a mold connecting hole is formed in the mold engaging protrusion.
A mold transfer device is attached to the groove between the rails, and the mold transfer device drives a mold engagement pin that can be inserted into the mold connection hole, a mold moving gear that meshes with the mold moving rack, and a mold moving gear. Has a mold moving motor,
Insert the mold engagement pin into the mold connection hole, engage the mold moving gear of the mold transfer device with the mold moving rack and rotate it, and move the mold on the mold moving table. It is a structure.

In the present invention of claim 1, in the mold transport structure for transporting a plurality of molds to the molding machine in an exchangeable manner, two mold moving tables having a mold moving rail for moving the mold are provided in parallel. A groove between rails is provided between the mold moving tables of the book. Therefore, the mold transfer device can be attached to the groove between the rails to lower the position of the mold transfer device, and the height of the entire molding device can be lowered.

Since the mold moving rack that meshes the gears is provided on the lower surface of the mold moving rail of the mold moving table, the positions of the mold moving motor and the mold moving gear of the mold transfer device are lower than the mold moving rail. Therefore, the main part of the mold transfer device can be provided under the mold moving table.

A mold engaging protrusion is provided at each side end of the mold split mold, and a mold connecting hole is formed in the mold engaging protrusion. Therefore, the mold and the mold transfer device can be connected only by inserting the mold engagement pin into the mold connection hole, and the mold split mold can be moved by the mold transfer device.

A mold transfer device is attached to the groove between the rails, and the mold transfer device drives a mold engagement pin that can be inserted into the mold connection hole, a mold moving gear that meshes with the mold moving rack, and a mold moving gear. It has a mold moving motor. Therefore, the mold engaging pin is inserted into the mold connection hole, the mold and the mold transfer device are engaged, and the mold moving gear is driven by the mold moving motor along the mold moving rail. The mold can be moved.

A mold engaging pin is inserted into the mold connection hole, and the mold moving gear of the mold transfer device is engaged with the mold moving rack to rotate the mold, and the mold is moved on the mold moving table. Therefore, the mold can be engaged and held by the mold engaging pin, and the mold moving gear of the mold transporting device can be meshed with and rotated by the mold moving rack to reliably move the mold. ..

According to the second aspect of the present invention, the mold engaging pin is provided so as to be located on the upper surface side of the mold moving rail of the mold moving table, and the mold moving gear and the mold moving motor are the molds of the mold moving table. It is a mold transfer structure provided so as to be located on the lower surface side of the mold moving rail.

In the present invention of claim 2, the mold engaging pin is provided so as to be located on the upper surface side of the mold moving rail of the mold moving table, and the mold moving gear and the mold moving motor are the molds of the mold moving table. It is provided so as to be located on the lower surface side of the mold moving rail. Therefore, while holding the mold on the upper surface side of the mold moving rail of the mold moving table, the mold moving gear and the mold moving motor are positioned on the lower surface side of the mold moving rail of the mold moving table. The position of the mold transfer device can be lowered to move the mold, the height of the entire device can be lowered, and the required space of the device can be reduced.

According to the third aspect of the present invention, the mold engaging pin is a mold transport structure in which the mold engaging pin is freely moved forward and backward by a cylinder in the mold connection hole.

In the present invention of claim 3, since the mold engaging pin is freely attached to the mold connecting hole by a cylinder, the mold engaging pin is securely inserted into the mold connecting hole by the cylinder. , The mold and the mold transfer device can be engaged, and the mold engaging pin can be easily removed.

According to the fourth aspect of the present invention, the mold moving motor is connected to the speed reducer, and the mold moving gear is a mold transport structure attached to the speed reducer.

In the present invention of claim 4, since the mold moving motor is connected to the speed reducer and the mold moving gear is attached to the speed reducer, the rotation of the mold moving motor is reduced by the speed reducer. , The force to rotate the mold moving gear is strengthened, and the mold can be moved reliably.

According to the fifth aspect of the present invention, the mold moving motor has a mold transport structure which is a servo motor.

In the present invention of claim 5, since the mold moving motor is a servomotor, the rotation speed of the mold moving gear can be controlled to precisely control the movement of the mold.

According to the sixth aspect of the present invention, a guide rail is provided below the mold moving rail of the mold moving table, and the mold conveying device is provided with a guide rail engaging member slidably attached to the guide rail to guide the mold. It is a mold transfer structure in which a rail engaging member is attached to a guide rail and the mold transfer device is moved along the guide rail.

In the present invention of claim 6, a guide rail is provided below the mold movement of the mold moving table, and the mold transport device is provided with a guide rail engaging member slidably attached to the guide rail. The engaging member is attached to the guide rail to move the mold transfer device along the guide rail. Therefore, the main part of the mold transfer device is attached to the guide rail below the mold transfer table by the guide member, the mold transfer device is securely held, and the mold transfer device is moved along the guide rail. be able to.

The present invention of claim 7 is a mold transfer structure in which a mold moving roller is provided on an upper surface of a mold moving rail of a mold moving table.

In the present invention of claim 7, since the mold moving roller is provided on the upper surface of the mold moving rail of the mold moving table, the mold can be moved smoothly.

In the present invention of claim 8, the mold transfer device is attached to two mold moving tables, respectively, and the mold engaging pin is a mold engaging protrusion of each of the two split molds of the mold. It is a mold transfer structure that engages with.

In the present invention of claim 8, the mold transfer structure of the present invention is attached to two mold moving tables, respectively, and the mold engaging pin is a mold for each of the two split molds of the mold. Engage with the engagement protrusion. Therefore, the two split dies of the mold can be reliably moved by the respective mold transfer devices, the mold transfer device can be miniaturized, and the dimensions of the mold transfer device can be reduced.

Since a mold moving rack in which gears mesh with each other is provided on the lower surface of the mold moving rail of the mold moving table, the position of the mold moving gear of the mold transfer device is lowered, and the mold is placed under the mold moving table. A transport device can be provided.
A mold transfer device is attached to the groove between the rails, and since the mold transfer device has a mold engaging pin, a mold moving gear, and a mold moving motor, the mold engaging pin is inserted into the mold connection hole. The mold can be inserted into the mold to engage the mold transfer device, and the mold moving gear can be driven by the mold moving motor to move the mold along the mold moving rack.

It is a perspective view which provided the mold transfer apparatus which is an embodiment of this invention between the mold moving tables. FIG. 3 is a cross-sectional view taken along the line AA in FIG. 4 of the mold transfer device according to the embodiment of the present invention. It is a front view of the mold transfer device which is an embodiment of this invention. It is a bottom view of the mold transfer device which is an embodiment of this invention. It is a top view of the mold transfer device which is an embodiment of this invention. It is a schematic diagram which shows the process of blow molding using the mold transfer structure which is an embodiment of this invention, and is the figure of the state which the 1st mold was opened and attached to the blow molding machine. It is a schematic diagram which shows the process of the blow molding using the mold transfer structure which is an embodiment of this invention, and is the figure of the state which the 1st mold is closed and blow molded. It is a schematic diagram which shows the process of the blow molding using the mold transfer structure which is an embodiment of this invention, and is the figure in the state which took out the first mold which was blow molded. It is a schematic diagram which shows the process of blow molding using the mold transfer structure which is an embodiment of this invention, and is the figure of the state which the 2nd mold is closed and attached to the blow molding machine. It is a schematic diagram which shows the process of the blow molding using the mold transfer structure which is an embodiment of this invention, and is the figure in the state which the 2nd mold is opened. It is a schematic diagram which shows the process of the blow molding using the mold transfer structure which is an embodiment of this invention, and is the figure of the state which the 2nd mold was opened and the blow molded article was taken out. It is a top view of the apparatus which moves two dies in the conventional press molding. It is a side view of the apparatus which moves two dies in the conventional press molding. It is sectional drawing of the rack and the pinion of the apparatus which moves two dies in the conventional press molding.

The mold transfer structure according to the embodiment of the present invention will be described with reference to FIGS. 1 to 11.
First, the mold transfer device 30 having a mold transfer structure and the mold moving table 20 on which the mold transfer device 30 is attached will be described with reference to FIGS. 1 to 5, and then the mold will be described with reference to FIGS. 6 to 11. A blow molding method using a mold transfer structure will be described.
As shown in FIG. 6, there are two molds, the first mold 10 and the second mold 11, which are conveyed by the mold transfer device 30, and the transfer of the first mold 10 will be described as an example. The same applies to the transportation of the second mold 11.

As shown in FIG. 1, the first mold 10 has a split mold 10a and a split mold 10b separated by a parting line, and the split mold 10a and the split mold 10b are each of the left and right mold moving tables 20. It is placed on the mold moving rail 21. A rail-to-rail groove 24 is formed between the left and right mold moving tables 20, two mold transfer devices 30 are attached to the rail-to-rail groove 24, and the two mold transfer devices 30 are split. It is attached so as to convey the mold 10a and the split mold 10b.

As shown in FIG. 2, a large number of mold moving rollers 21a are attached to the upper surface of the mold moving rail 21 of the mold moving table 20 in order to move the split mold 10a and the split mold 10b. Further, a mold moving rack 22 is formed on the lower surface side of the mold moving rail 21. On the lower surface of the mold moving rail 21, a mold moving rack 22 to which the mold moving gear 36 described later is fitted is continuously formed.

As shown in FIG. 2, the outside of the mold moving table 20 is in contact with the lower part of the outer surface of the split mold 10a and the split mold 10b, and the first from the mold moving rail 21 of the mold moving table 20. The guide roller 26 can be provided so that the mold 10 does not come off. A large number of guide rollers 26 can be attached to the moving path of the mold along the mold moving table 20.

Further, below the mold moving rail 21 of the mold moving table 20, a mold moving guide rail 23 extending laterally in parallel with the mold moving rail 21 is attached. The mold moving guide rail 23 is attached so that the guide rail engaging member 37 of the mold transport device 30, which will be described later, is slidably engaged in the lateral direction.

As shown in FIG. 1, the mold is engaged so as to be in contact with or close to the upper surface of the mold moving rail 21 of the mold moving table 20 at the side ends of the split mold 10a and the split mold 10b of the first mold 10. The protrusion 12 is provided. The mold engaging protrusion 12 is formed with a mold connecting hole 13. The mold engaging pin 31 of the mold transfer device 30, which will be described later, is inserted into the mold connection hole 13 so as to be able to advance and retreat.

Next, the mold transfer device 30 will be described.
As shown in FIG. 2, the mold transfer device 30 is formed with a mold engaging base 33 at the upper portion, and the mold engaging pin 31 and the mold engaging pin 31 are provided on the mold engaging base 33. A mold engaging pin cylinder 32 that slides freely forward and backward is attached. The mold engaging pin 31 and the mold engaging pin cylinder 32 are provided so as to project upward from the upper surface of the mold moving rail 21 of the mold moving table 20, and the mold engaging pin 31 is provided on the mold moving rail. It is provided at a position where it can be inserted into the mold connection hole 13 of the mold engaging protrusion 12 placed on the upper surface side of the 21.

As shown in FIGS. 3 to 5, a mold moving motor 34 and a speed reducer 35 are provided below the mold transfer device 30. The mold moving motor 34 and the speed reducer 35 are connected by a timing belt 35a, and the rotation of the mold moving motor 34 is transmitted to the speed reducer 35.
A mold moving gear 36 is attached to the speed reducer 35, and the mold moving gear 36 engages with a mold moving rack 22 formed on the lower surface of the mold moving rail 21 of the mold moving base 20. There is.

As shown in FIG. 2, a guide rail engaging member 37 is provided on the surface of the speed reducer 35 facing the mold moving guide rail 23. In the present embodiment, the cross-sectional shape of the guide rail engaging member 37 is a C-shaped or U-shaped tip having a protrusion formed on the opening side. The guide rail engaging member 37 can be engaged so as to sandwich the upper side and the lower side of the mold moving guide rail 23 to hold the mold transporting device 30 and to be slidable in the lateral direction.

The guide rail engaging member 37 is also attached to the surface of the mold moving motor 34 facing the mold moving rail 21, and holds the mold moving motor 34.
In addition to the shape of the present embodiment, the guide rail engaging member 37 can be diverted as long as it has a shape that can be slidably slid by engaging with the mold moving guide rail 23.

Next, a blow molding method using the mold transfer device 30 will be described with reference to FIGS. 6 to 11.
FIG. 6 shows a state in which the first mold 10 is opened and the left and right split molds 10a and 10b are attached to the mold mounting plates 41 and 41 of the blow molding machine 40, and the blow molding of the second mold 11 is completed. It is a figure which shows the state in which a blow molded article 50 is sandwiched in a cavity and is being cooled.
At this time, the parison 2 is about to be transferred from the outside of the blow molding machine 40 between the left and right split molds 10a and 10b.

In the next step, as shown in FIG. 7, the parison 2 is placed on the left and right split molds 10a and 10b, the first mold 10 is closed, and blow molding is performed in the cavity of the first mold 10. At that time, the blow molding of the second mold 11 has already been completed, the blow molded product 50 is sandwiched in the cavity of the second mold 11, and cooling is being continued.
Next, as shown in FIG. 8, the first mold 10 is taken out from the blow molding machine 40 by the mold transfer device 30.

To take out the first mold 10 by the mold transfer device 30, as shown in FIG. 1, the mold engagement pin 31 of the mold transfer device 30 is attached to the split molds 10a and 10b of the first mold 10. It is moved so as to be located at the portion of the mold engaging protrusion 12.
Next, the mold engaging pin cylinder 32 is operated to insert the mold engaging pin 31 into the mold connecting hole 13 of the mold engaging protrusion 12. The mold engaging pin 31 is inserted into the mold connection holes 13 of both the split molds 10a and 10b.

Next, the mold moving motor 34 is driven to rotate the mold moving gear 36 attached to the speed reducer 35. When the mold moving gear 36 rotates, it is engaged with the mold moving rack 22 formed on the back surface of the mold moving rail 21, and the mold conveying device 30 moves and is engaged with the mold engaging pin 31. The mold engaging protrusion 12 and the split molds 10a and 10b of the first mold 10 start to move. The speed reducer 35 can reduce the rotation speed of the mold moving motor 34 and move the split molds 10a and 10b of the first mold 10 with a strong rotational force.

At this time, since the mold transfer device 30 is held by the mold moving guide rail 23 of the mold moving table 20 by the guide rail engaging member 37, the mold transferring device 30 is smoothly laterally along the mold moving table 20. You can move.
Further, the mold moving motor 34 can reliably control the moving amount of the first mold 10 by using the servo motor.

When the movement of the first mold 10 is completed, the mold engaging pin cylinder 32 is operated to pull out the mold engaging pin 31 from the mold connecting hole 13 of the mold engaging protrusion 12.
As a result, the first mold 10 can be disengaged from the mold transfer device 30 and can move.

Next, as shown in FIG. 9, the pallet on which the first mold 10 and the second mold 11 are placed is moved, the positions of the first mold 10 and the second mold 11 are shifted, and the mold is further conveyed. The second mold 11 is moved by the device 30, and the left and right split molds 11a and 11b of the second mold 11 are attached to the mold mounting plates 41 and 41 of the blow molding machine 40.
At that time, the blow-molded product 50 is sandwiched in the cavity of the first mold 10, and cooling is being continued.

Next, as shown in FIG. 10, the left and right split molds 11a and 11b of the second mold 11 are opened, and the blow molded product 50 is taken out from the cavity.
Next, as shown in FIG. 11, the blow molded product 50 is taken out from the blow molding machine 40. Then, as shown in FIG. 6, the parison 2 is transferred between the left and right split molds 11a and 11b, the left and right split molds 11a and 11b are closed, and blow molding is performed. Even at that time, the blow-molded product 50 is sandwiched in the cavity of the first mold 10 and cooling is being continued.
Repeat this process.

2 Parison 10 1st mold 11 2nd mold 12 mold engaging protrusion 13 mold connection hole 20 mold moving table 22 mold moving rack 23 mold moving guide rail 30 mold transport device 31 mold engaging pin 36 Mold moving gear

Claims (8)

In a mold transport structure that interchangeably transports multiple molds to a molding machine
Two mold moving tables having mold moving rails for moving the mold are provided in parallel, a groove between the rails is provided between the two mold moving tables, and the mold moving table of the mold moving table is moved. A mold moving rack for meshing gears is provided on the lower surface of the rail.
A mold engaging protrusion is provided at each side end of the split mold of the mold, and a mold connecting hole is formed in the mold engaging protrusion.
A mold transfer device is attached to the groove between the rails, and the mold transfer device includes a mold engaging pin that can be inserted into the mold connection hole, a mold moving gear that meshes with the mold moving rack, and the mold. It has a mold moving motor that drives the moving gear,
The mold engaging pin is inserted into the mold connection hole, the mold moving gear of the mold transfer device is engaged with the mold moving rack to rotate, and the mold is moved to the mold moving table. Mold transfer structure that moves on the above mold moving rail. The mold engaging pin is provided so as to be located on the upper surface side of the mold moving rail of the mold moving table, and the mold moving gear and the mold moving motor are the mold of the mold moving table. The mold transfer structure according to claim 1, which is provided so as to be located on the lower surface side of the moving rail. The mold transfer structure according to claim 1 or 2, wherein the mold engaging pin is freely attached to the mold connection hole by a cylinder. The mold transfer structure according to any one of claims 1 to 3, wherein the mold moving motor is connected to a speed reducer, and the mold moving gear is attached to the speed reducer. The mold transfer structure according to any one of claims 1 to 4, wherein the mold moving motor is a servo motor. A guide rail is provided below the mold moving rail of the mold moving table, and the mold transport device is provided with a guide rail engaging member slidably attached to the guide rail to engage the guide rail. The mold transfer structure according to any one of claims 1 to 5, wherein the member is attached to the guide rail and the mold transfer device is moved along the guide rail. The mold transfer structure according to any one of claims 1 to 6, wherein a mold moving roller is provided on the upper surface of the mold moving rail of the mold moving table. The mold transfer device is attached to each of the two mold moving tables, and the mold engaging pin engages with the mold engaging protrusion of each of the two split molds of the mold. The mold transport structure according to any one of claims 1 to 7.

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