JPH0753776Y2 - Push / pull drive device for molds of processing machines - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is a push-pull drive for molds (molds, work pallets, works, etc.) of processing machines (press machines, injection molding machines, machine tools, etc.). BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device, and more particularly, to a push-pull drive device having a simplified structure of a connecting device.

[Prior art]

Conventionally, in order to save labor in carrying in and out of a processing machine such as a mold and a work, a push-pull drive device as described in, for example, Japanese Utility Model Publication No. 2-17715 filed by the applicant of the present application has been put into practical use. Has been widely used.

Generally, a push-pull driving device includes a connecting device that is installed in a guide path provided in a carriage on which a mold or the like is mounted so as to be movable back and forth and that drives the mold and the like to push and pull and a drive device that drives the connecting device to move back and forth. Usually, the coupling device includes a main body having a leg portion inserted into a guide path, a hook tool pivotally supported on the main body via a support shaft, and a hook portion formed at a tip end, and a hook. Cylinder for rotating the tool to switch the position between an engaging position at which the hook portion is engaged with the engaging tool attached to a mold or the like in a pushable / pullable manner and a releasing device at which the engaging tool is disengaged. It is composed of.

[Problems to be solved by the device]

In the above-mentioned conventional push-pull drive device coupling device, the hook tool is rotatably supported on the main body, and the hook tool is pivotally driven between the engagement position and the release position by the cylinder. There is a problem in that the number of parts for connecting the supporting shaft or the rod of the cylinder and the end of the cylinder body to the hook tool and the body is increased, which increases the manufacturing cost of the coupling device. In addition, the hook tool has to be formed long and the driving stroke of the cylinder needs to be increased, which causes a problem that the hook and the cylinder become large and the connecting device becomes large as a whole.

An object of the present invention is to provide a push-pull drive device provided with a coupling device that is small in size, has a simple structure, and can be manufactured at low cost.

[Means for Solving the Problems]

A push / pull drive device for a die or the like of a processing machine according to the present invention is provided with a roller device for transferring the die or the like on a top surface of a truck in a direction orthogonal to a traveling direction of the truck, and one side of the truck and one outside of the truck. A drive device is provided on one side of the floor surface of the vehicle, and a guide path is provided on the upper surface of the cart in a transverse shape parallel to the transfer direction, and its end is exposed to the drive device. The leg portion of the is inserted so that it can be moved back and forth, and the drive device is configured such that the drive chain can be driven forwards and backwards into the guide path through the sprocket by the rotary drive means, and the drive chain is restrained from bending in the guide path, In a push-pull drive device such as a mold of a processing machine in which the end portion of the drive chain is connected to the leg portion,
An engagement tool in which a double-acting cylinder oriented in a direction orthogonal to the transfer direction is fixedly provided in the main body of the coupling device, and an engagement pin member fixed to a rod of the cylinder is attached to a mold or the like by the cylinder. The position is switchable between an engagement position in which the engagement hole is pushed and pulled and a release position in which the engagement with the engagement hole is released.

[Action]

In the push-pull drive device according to the present invention, when a die or the like is carried into a processing machine, for example, the double-acting cylinder of the coupling device is driven to switch the engagement pin member to the engagement position, Are engaged with the engaging holes of the engaging tool of the mold. In this state, the driving device drives the coupling device to the processing machine side through the driving chain to transfer the mold and the like. After the loading of the mold, etc. is completed, the double-acting cylinder is driven to switch the engagement pin member to the release position to release the engagement between the engagement pin member and the engagement hole, and then the coupling device is retracted to the truck side. Let On the other hand, when the mold or the like is carried out from the processing machine, the same procedure as above may be performed.

[Effect of device]

According to the push / pull drive device for a die or the like of the processing machine according to the present invention, in the coupling device, a double-acting cylinder is fixedly provided on the main body and the engaging pin member is fixed to the rod of the cylinder. Therefore, it can be configured with a very small number of parts such as the main body, the cylinder, and the engagement pin member.The cylinder may have a small stroke only for engaging and disengaging the engagement pin member with the engagement hole. Since the members can be extremely short, the connecting device can be downsized as a whole,
It is possible to obtain effects such as reduction in manufacturing cost of the connecting device.

〔Example〕

 Embodiments of the present invention will be described below with reference to the drawings.

<First Embodiment> The push-pull drive device of the present embodiment is one in which the present invention is applied to a push-pull drive device that conveys and replaces the mold of an injection molding machine.

As shown in FIGS. 1 and 2, on the upper surface of the self-propelled carriage 2 of the push-pull drive device P, at least one pair of rollers for transferring the mold 1 in the direction orthogonal to the traveling direction of the carriage 2. A device 3 is provided, and a guide member 4 is provided in a transverse shape parallel to the transfer direction of the mold 1 at a substantially central portion of the carriage 2 between the roller devices 3, and a left end portion of the guide member 4 is a left end of the carriage 2. A connecting device 6 is provided on the guide member 4 so as to move forward and backward in the transfer direction of the mold 1 so as to face the drive device 5 provided on the surface, and the drive device 5 moves the connecting device 6 along the guide path 7 of the guide member 4. By moving the mold 1 forward and backward, the mold 1 is carried in and out from the carriage 2 between the movable platen (not shown) of the injection molding machine M and the fixed platen 9.

The drive device 5 includes a rotary drive device 10, a sprocket 12 that is rotationally driven by the rotary drive device 10, and a drive chain 13 that is connected to the connection device 6 at the end portion and is engaged with the sprocket 12 at an intermediate portion. .

As shown in FIGS. 2 to 4, the rotation driving device 10 includes a support block 11, a screw shaft 16 in which the upper and lower spring receiving portions 20 at the left end of the support block 11 are loosely inserted, and the support block 11. A guide rod 17 slidably inserted in the right end portion, an electric motor 14 having a speed reducer 15 that rotationally drives a screw shaft 16, and the like,
Square nuts 18 are screwed on the screw shaft 16 between the upper and lower spring bearing portions 20, and compression coil springs 19 are provided on the screw shaft 16 between the spring bearing portions 20 and the square nuts 18, respectively. Has been.

The sprocket 12 is rotatably supported by the support block 11, and the electric motor 14 rotates the screw shaft 16 to rotate the square nut 18.
And the support block 11 is moved up and down via the coil spring 19 to move the drive chain 13 into or out of the guide path 7 via the sprocket 12 to move the coupling device 6 to the right or left. It is designed to be pushed and pulled in one direction. In addition, a support block is provided through the coil spring 19.
By driving 11, the screw shaft 16 is prevented from being damaged when the coupling device 6 suddenly stops.

Explaining the drive chain 13, the idler wheels 21 are mounted on both sides of the chain 13A, and the chain 13A has a cross section U having a length corresponding to the connecting plate of the chain 13A over its entire length.
A plurality of shaped guides 22 are provided with their adjacent ends abutting each other, and the guides 22 allow the drive chain 13 to bend only inward.

The starting end of the drive chain 13 is connected to the casing 24 by a fixture, and the drive chain 13 is guided by a pair of guide tools 25 having a U-shaped cross section provided on the left and right inner wall portions of the casing 24. In the guide passage 7, the idler wheel 21 is constrained by the guide wall surface 23 from the upper and lower sides so that the compressive force can be transmitted. Reference numeral 27 is a guide block for changing the direction of the drive chain 13.

Explaining the connecting device 6, the leg portion 30 of the main body 29 of the connecting device 6 is slidably inserted into the guide path 7, and the end portion of the drive chain 13 is connected to the leg portion 30 so that the main body 29 extends. Part 31
A hydraulically actuated double-acting cylinder 32 is fixedly provided at the upper end of the cylinder in the vertical direction, an engagement pin member 34 is fixed to a rod 33 of the cylinder 32, and the engagement pin member 34 is attached to the overhang portion 31. The formed insertion hole 33a is inserted.

A hydraulic hose 35 is connected to the main body 29, and the hydraulic hose 35 is connected to a hydraulic pressure supply port 40 provided in the casing 24 via the drive chain 13. The hydraulic pressure supplied to the main body 29 by the hydraulic hose 35 is supplied to the pushing motion chamber or the returning motion chamber of the cylinder 32 via the electromagnetic switching valve provided inside the main body 29 and the hydraulic hoses 36 and 37, and is engaged. Releasing the engagement between the engagement position (shown by the dashed line in FIG. 2) where the pin member 34 is engaged with the engagement hole 45a of the engagement tool 45 fixed to the die 1 and the engagement hole 45a The position is switched to the position (shown by the solid line in FIG. 2). The engagement pin member 34 is provided in the engagement hole 45a.
A guide portion 45b that guides is formed.

The operation of the push-pull drive device P configured as described above will be described.

When the mold 1 is carried into the injection molding machine M, the connecting device 6
The double-acting cylinder 32 is driven to switch the engagement pin member 34 to the engagement position, and the engagement pin member 34 is engaged with the engagement hole 45a of the engagement tool 45. In this state, the drive device 5 drives the drive chain 13
Drive the coupling device 6 to the injection molding machine M side through the mold 1
To transfer. After the loading of the mold 1 is completed, the double-acting cylinder 32 is driven to switch the engagement pin member 34 to the release position to release the engagement between the engagement pin member 34 and the engagement hole 45a, and then the coupling device 6
Retreat to the trolley 2 side. On the other hand, the mold 1 is made into an injection molding machine M.
If the product is to be taken out of the container, the same procedure as above may be performed.

In this way, the double-acting cylinder 32 is fixedly provided on the main body 29,
Since the engaging pin member 34 is fixed to the rod 33 of the cylinder 32 to form the connecting device 6, the connecting device 6 can be constituted by a very small number of parts such as the main body 29, the cylinder 32 and the engaging pin member 34.
Can be manufactured at low cost. In addition, the cylinder 32 may have a small stroke for engaging and disengaging the engaging pin member 34 with the engaging hole 45a, and the engaging pin member 34 may be extremely short. The size can be reduced, and the manufacturing cost of the connecting device 6 can be reduced.

The drive device 5 does not necessarily have to be provided on one side of the truck 2 and may be provided on the floor surface 41 outside the one side of the truck 2.
Further, it is possible to use an air cylinder instead of the hydraulic cylinder for the cylinder 32. In addition, the motor 14, the screw shaft 16, the guide rod 17, etc. are omitted, and a hydraulic cylinder or an air cylinder is provided in a vertical direction, and the cylinder is used to support the block
It is also possible to drive 11 up and down directly. Also, mold 1
Only when the mold 1 is carried into the injection molding machine M, the mold 1 may be transferred by pushing the engagement fitting 45 with the main body 29 with the engagement pin member 34 in the release position.

<Second Embodiment> In the push-pull drive device PA of this embodiment, the connection between the starting end of the drive chain 13 and the casing 24 is released, and the rotary drive device 10A is fixedly provided in the casing 24.
The same members as those of the push-pull drive device P of the above embodiment are designated by the same reference numerals, and the description thereof will be omitted.

The rotary drive device 10A will be described. As shown in FIGS. 6 and 7, a motor casing 50 is fixed to the upper portion of the right wall portion of the casing 24, and the motor casing 50 accommodates an electric motor 51. Electric motor 51 casing 24
It is fixed to the right wall of the.

The output shaft 52 of the electric motor 51 is rotatably supported by bearings 53 provided on the right wall portion and the left wall portion of the casing 24, respectively, and the sprocket 12 is mounted on the output shaft 52, so that the electric motor
The sprocket 12 is rotated by 51 to rotate the sprocket 12
The drive chain 13 engaged with is driven to move back and forth.

A hydraulic motor, an air motor, a stepping motor, or an ultrasonic motor may be used instead of the electric motor 51. Further, the push / pull drive device P / PA is not limited to the mold 1 of the injection molding machine M, but can be used for transferring a mold of a press machine or a die cast casting machine, a work pallet, a work, etc. used in a machine tool. Of course, it can be applied.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a partial vertical sectional front view of a push-pull driving device and an injection molding device according to the first embodiment, and FIG. Fig. 3, Fig. 3 is a sectional view taken along the line III-III in Fig. 2, Fig. 4 is a sectional view taken along the line IV-IV in Fig. 3, Fig. 5 is a sectional view taken along the line VV in Fig. 2, and Fig. 6 is shown in Fig. 2 A push-pull drive device according to an embodiment corresponds to FIG. 2, and FIG. 7 is FIG.
FIG. 7 is a sectional view taken along line VII-VII. 1 ... Mold, 2 ... Cart, 3 ... Roller device, 5 ... Drive device, 6 ... Coupling device, 7 ... Guideway, 10.10A ...
Rotational drive, 12 ... sprocket, 13 ... drive chain, 29 ... main body, 30 ... legs, 32 ... cylinder, 33 ...
Rod, 34 ... engagement pin member, 41 ... floor surface, 45 ... engagement tool, 45a ... engagement hole, P / PA ... push-pull drive device.

Claims (1)

[Scope of utility model registration request] 1. A roller device for transferring a die or the like in a direction orthogonal to the traveling direction of the dolly is provided on the upper surface of the dolly, and a drive device is provided for one side of the dolly and a floor surface outside the one side of the dolly. ,
A guideway is provided on the upper surface of the cart in a transverse shape parallel to the transfer direction, the end of the guideway is exposed to the drive device, and the leg of the main body of the coupling device is inserted into the guideway so that the drive device is The drive chain is constructed so that it can be driven back and forth through a sprocket into and out of the guide path by a rotary drive means, the drive chain is restrained from bending in the guide path, and the end portion of the drive chain is connected to the leg portion. In a push-pull drive device such as a mold of a machine, a double-acting cylinder oriented in a direction orthogonal to the transfer direction is fixedly provided in the main body of the coupling device, and an engagement pin member fixed to a rod of the cylinder is provided. , The position of which can be switched between an engaging position in which the engaging member of the engaging member attached to the mold or the like is pushably pulled by the cylinder and a releasing position in which the engagement with the engaging hole is released. Molds for processing machines characterized by Push-pull drive.