JPH0541734U - Automatic mold changer - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] To prevent uneven wear of the support member due to the weight of the detached molds 29, 31. This makes it possible to easily correct the positions of the molds 29 and 31 even if they are displaced. At the time of supporting the movement, the movement resistance of the mold is reduced, and the molds 29 and 31 can be carried out and carried in with a small driving force. [Structure] A ball bearing 2 for movably supporting a pair of molds 29, 31 on a fixed side mounting board 5 and a supporting board of a molding machine.
Install 1, 23. A mold carrier truck is placed so that it can run on its own along the molding machine. A carry-out device and a carry-in device are mounted on the mold carrier.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an automatic die changer for attaching and detaching a die to a molding machine, and more particularly to a die support structure which is attached to the molding machine and movably supports the die.

[0002]

[Prior art]

 In the conventional automatic die changer described above, the die carrier truck that removes or attaches the die to the front or back of the molding machine is self-propelled in a direction parallel to the axis of the molding machine. It is arranged as possible.

On the mold carrier, a carry-in conveyor that mounts a mold to be mounted thereon and a carry-out conveyor that mounts a mold to be taken out are carried in a direction orthogonal to the traveling direction. It is provided so that it can be driven.

Further, a side of each of the carry-in and carry-out conveyors is provided with a pushing mechanism for pushing the mold toward the molding machine and a pulling mechanism for drawing the mold from the molding machine.

On the fixed side and movable side mounting boards of the molding machine, there are provided a plurality of support rollers that support the lower end surface of the loaded mold and can carry the mold in a direction orthogonal to the traveling direction of the mold carrier. Each is installed.

Further, hydraulic clamp devices are respectively attached to the upper and lower sides of the molds on the respective mounting plates, and the loaded molds are fixed to the respective mounting plates.

[0007]

[Problems to be solved by the device]

 However, when the mold carried in the molding machine is supported by the support roller, there are the following problems.

Generally, when a mold is attached to or detached from a molding machine, the mounting boards are separated from each other so that they are slightly wider than the thickness of a pair of molds matched with each other. Since it cannot rotate in the axial direction of the machine, the support roller itself wears unevenly due to the weight of the mold, making it impossible to support the mold in a nearly perfect circle.

That is, when the mold moves on the support roller, it is difficult to smoothly move the mold, and the mold vibrates up and down to cause an unstable posture.

Further, if the support roller is worn unevenly, the inserting direction and the removing direction of the mold become unstable, and there is a possibility that the center of the molding machine and the center of the mold cannot be accurately positioned.

The present invention was devised in order to solve the above-mentioned conventional drawbacks, and the purpose thereof is to support a die, which is to be carried in or carried out, in an arbitrary direction by moving it. An object is to provide an automatic die changer capable of facilitating the position correction of a die with respect to a molding machine and accurately positioning the die.

Another object of the present invention is to provide an automatic die changer capable of supporting a die to be carried in or out in a stable posture and facilitating smooth and efficient exchange work. Especially.

[0013]

[Means for solving problems]

 Therefore, according to the present invention, a pair of molds supported by a fixed-side mounting board and a supporting board of a molding machine are placed on a carry-out device of a mold carrier truck that is provided so as to be self-propelled along the molding machine. In the automatic die changer that attaches the die placed on the loading device of the die carrier to the fixed side mounting board and the supporting board after it is taken out, The feature is that the die is supported by a ball bearing member.

[0014]

Since the present invention is configured as described above, the die carrier truck is self-propelled and its unloading device is positioned in front of the die attached to the molding machine.

The metal mold placed on the fixed side mounting board and the support board is pulled out and transferred onto the carry-out device.

At this time, since the mold is supported by the ball bearing so as to be movable in an arbitrary direction, the mold can be pulled out with a small movement resistance and the positional deviation during the movement can be easily corrected.

Next, the die carrier truck is self-propelled to position the loading device in front of the molding machine.

In the above state, the mold placed on the carry-in device is transferred onto the ball bearings of the fixed-side mounting board and the support board and mounted on the molding machine.

At this time, since the mold is supported by the ball bearing, it is possible to reduce the movement resistance and to easily correct the positional deviation at the time of carrying in.

[0020]

【Example】

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

FIG. 1 is a perspective view showing the outline of a molding machine equipped with an automatic mold changing device.

FIG. 2 is a schematic perspective view showing a mounting state of the support roller on each mounting board.

FIG. 3 is a schematic plan view showing a mounting state of the support roller.

A fixed side mounting board 5 and a support board 7 are provided on the main body frame 3 of the molding machine 1 at predetermined intervals in the longitudinal direction.

Between the fixed side mounting board 5 and the support board 7, for example, four tie bars 9 are mounted such that their axes are parallel to each other, and the movable side mounting board 11 slides on the tie bars 9 in the axial direction. Supported as possible.

A mold clamping cylinder 13 mounted on the body frame 3 is connected to the movable side mounting board 11, and the movable side mounting board 11 is moved toward the fixed side mounting board 5 by the operation of the mold clamping cylinder 13. Will be moved.

An injection device 15 having an axis in the longitudinal direction is arranged on the main body frame 3 on the fixed side mounting board 5 side, and the tip of the injection cylinder 15a of the injection device 15 is located at the center of the fixed side mounting board 5. It is moved so as to be located in the formed through hole (not shown).

A plurality of support bars 17 and 19 are attached to the lower portions of the fixed-side mounting board 5 and the movable-side mounting board 11 in a direction orthogonal to the axis of the injection cylinder 15a and at appropriate intervals. ing.

Ball bearings 21 and 23 are attached to the support bars 17 and 19, respectively.

Further, metal mold clamp members 25 and 27 are attached to the lower and upper portions of the fixed side mounting board 5 and the movable side mounting board 11 corresponding to the mutual space between the support bars 17 and 19, and the molds 29 and 31 are mounted. It is attached so that it almost coincides with the upper and lower parts of the.

The mold clamp members 25 and 27 are of a hydraulic cylinder type, and are mold plates 29a of the molds 29 and 31 supported by the ball bearings 21 and 23 by rods 25a and 27a that move toward each other.・ It is configured to be locked and fixed to 31a.

On the front surfaces of the fixed-side mounting board 5 and the movable-side mounting board 11 (on the side of a mold mounting vehicle, which will be described later), the connection rollers 33 and 35 are aligned with the support surfaces of the ball bearings 21 and 23. It is installed.

A pair of rails 37 are arranged on the front floor of the molding machine 1 parallel to the longitudinal direction of the main body frame 3, and a mold carrier truck 39 is self-propellable in the longitudinal direction on the rails 37. It is provided in.

A mold carry-out conveyor 41 and a mold carry-in conveyor 43 are attached to the upper surface of the mold carrier truck 39 so that they can be carried in a direction orthogonal to the traveling direction.

Further, a pull-out device 45 is movably attached to the die carrier carriage 39 corresponding to the side of the die carry-out conveyor 41 in a direction orthogonal to the traveling direction, and the pull-out device 45 reciprocates the hook portion 45a. The molds 29 and 31 are taken out from the molding machine 1 by moving them.

Further, an extrusion device 47 is movably supported by a die transportation carriage 39 corresponding to the side of the die carry-in conveyor 43 in a direction orthogonal to the traveling direction, and the extrusion device 47 reciprocates the contact plate 47a. By moving, the molds 29 and 31 placed on the mold carry-in conveyor 43 are carried into the molding machine 1.

Next, the operation of the above configuration will be described.

FIG. 4 is a schematic plan view showing a state where the die is carried out.

FIG. 5 is a schematic plan view showing the loading state of the mold.

FIG. 6 is a schematic plan view showing a state where the mold is displaced.

First, the unloading action of the mold will be described.

The mold carrier 39 is self-propelled and the mold carry-out conveyor 41 is positioned in front of the molds 29 and 31 attached to the molding machine 1.

At this time, the transfer surfaces of the mold carry-out conveyor 41 and the connection rollers 33 and 35 are aligned.

When the clamping state of the molds 29, 31 by the mold clamp members 25, 27 is released in the above state, the molds 29, 31 are supported on the ball bearings 21, 23.

At this time, since the fixed-side mounting board 5 and the support board 7 are separated slightly wider than the thickness of the pair of molds 29 and 31, the posture of the molds 29 and 31 itself, not necessarily the pulling direction. Does not match.

In the above state, the hook portion 45a of the drawer device 45 is moved and locked to the front surface of the combined mold 29/31, and then the hook portion 45a is moved back. The supported dies 29 and 31 are transferred on the die unloading conveyor 41 via the connecting rollers 33 while moving the ball bearings 21 and 23.

At this time, even if the molds 29 and 31 supported on the ball bearings 21 and 23 are displaced with respect to the pulling-out direction, the ball bearings 21 and 23 are used to position them in any direction. Since the molds 29 and 31 can be corrected, the molds 29 and 31 can be pulled out and placed on the mold carry-out conveyor 41 so as to coincide with the pulling direction with a small pulling resistance.

The molds 29 and 31 transferred onto the mold carry-out conveyor 41 as described above are kept in a mounted state by a stopper (not shown).

Next, the loading operation of the mold will be described.

With the molds 29 and 31 taken out on the mold carry-out conveyor 41, the mold carrying carriage 39 is controlled to move and the mold carry-in conveyor 43 is set at the mold mounting position of the molding machine 1. To face.

At this time, the die carry-in conveyor 43 and the ball bearings 21 and 23 have their conveying surfaces and supporting surfaces aligned by the connecting rollers 33 and 35.

In the above state, when the pushing device 47 is driven to move the contact plate 47 a that contacts the molds 29 and 31 placed on the mold carry-in conveyor 43 toward the molding machine 1, The molds 29 and 31 are carried and supported on the ball bearings 21 and 23 of the fixed side mounting board 5 and the support board 7.

At the time of carrying-in, the molds 29, 31 are moved while being displaced on the connection roller 35 and the ball bearings 21. 23, but the ball bearings 21. 23 themselves can be supported in any direction. Therefore, it is possible to prevent the ball bearings 21 and 23 from being unevenly worn due to the weight of the molds 29 and 31, so that the molds 29 and 31 can be set at a predetermined position with a small movement resistance and are stable. It can be supported in the same posture.

In the above description, the hydraulic clamp type mold clamp members 25 and 27 are used for the fixed-side mounting plate 5 and the support plate 7, but the fixing device may be the following.

As shown in FIG. 7 (FIG. 7 shows a mounting state with respect to the fixed side mounting board, the same applies to the support plate, and the description thereof will be omitted). The support bolts 73 are attached respectively.

Further, the support block 75 is attached to the fixed side mounting board 71 corresponding to the outside of the support bolt 73, and the long hole 77 a provided at the tip end portion of the support block 75 is attached to the support bolt 73. The fixed member 77 inserted is movably supported.

A cylinder 78 attached to the support block 75 is connected to the other end of the fixing member 77, and the cylinder 78 operates to reciprocate the fixing member 77.

The fixing member 77 is constantly urged toward the fixed side by the elastic force of the compression spring 79 attached to the support bolt 73.

A nut 81 is engaged with the tip of the support bolt 73 to which the fixing member 77 is attached, and a fixed drive device 83 is attached to the nut 81.

The wrench member 85 of the fixed drive device 83 is fitted into the nut 81, and the other end of the wrench member 85 is rotatably supported by the roller 86.

The roller 86 is slidably supported in a support hole 90 formed in a piston 88 of a cylinder 87 attached to the support block 75.

That is, a support hole is formed in the piston in a direction orthogonal to its moving direction, and the roller 86 is supported on the inner surface of the support hole so as to be movable in the direction orthogonal to the axis.

When the cylinder 78 is operated while the molds 29 and 31 are supported on the ball bearings 21 and 23, the tip of the fixing member 77 moves to a position where it engages with a part of the molds 29 and 31. To be done.

When the cylinder 87 of the fixed drive device 83 is reciprocally driven in the above state, the roller 86 slidingly contacting the support hole 90 of the moving piston 88 causes the wrench member 85 to pivot back and forth to the support bolt 73. The meshed nut 81 is moved in the fixing direction, and the tip of the fixing member 77 is brought into pressure contact with the molds 29 and 31.

As a result, the mold is fixed to the fixed side mounting board 71.

In the above description, the drawing device 45 and the pushing device 47 mounted on the mold carrier are used to draw the mold from the molding machine or to mount the mold on the molding machine. It is also possible to attach a hook member instead of the chuck part of the automatic molded product take-out machine attached to, and pull out the mold or push it in to mount it.

[0067]

[Effect of the device]

 Therefore, according to the present invention, the mold to be carried in or carried out can be supported by moving in any direction and supporting the mold, facilitating the position correction of the mold with respect to the molding machine and accurately positioning the mold. An automatic die changer can be provided.

Further, the present invention can provide an automatic die changer capable of supporting a die to be carried in or out in a stable posture and facilitating the exchange work to be smooth and efficient.

[Brief description of drawings]

FIG. 1 is a perspective view showing an outline of a molding machine equipped with an automatic mold changing device.

FIG. 2 is a schematic perspective view showing a mounting state of a support roller on each mounting board.

FIG. 3 is a schematic plan view showing a mounting state of a support roller.

FIG. 4 is a schematic plan view showing a state where a mold is carried out.

FIG. 5 is a schematic plan view showing a loaded state of a mold.

FIG. 6 is a schematic plan view showing a state where the mold is displaced.

FIG. 7 is a schematic perspective view showing a modified example of the mold fixing device. 1: Molding machine 5: Fixed side mounting board 7: Support board 21/23: Ball bearing 25/27: Mold clamp member 29/31: Mold 39: Mold carrier truck 41: Mold carry-out conveyor 43: Mold Carry-in conveyor

Claims (1)

[Scope of utility model registration request] 1. A pair of molds supported by a fixed-side mounting board and a supporting board of a molding machine are taken out onto a carry-out device of a mold carrier truck provided so as to be self-propelled along the molding machine. In a die automatic changing device for attaching a die placed on a loading device of a die carrier to a fixed side mounting board and a supporting board, a die is mounted on the fixed side mounting board and the supporting board with a ball bearing. An automatic die changer characterized by being supported by members.