JPH081678A - Mold support device in molding machine - Google Patents

Abstract

PURPOSE:To certainly support a mold to be mounted without being restricted by the size and shape of the mold to prevent the falling and positional shift thereof. CONSTITUTION:A movable frame 15 having a support part provided to the upper part thereof is supported on the attaching block 5 fixed to the lower part of the attaching plate 1 in a molding machine in an up and down movable manner and moved up and down be by a drive member. The support part of the movable frame moving upwardly is brought into contact with the lower end surface of the mold mounted on the attaching plate 1 to support the mold.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold supporting device for supporting a mold fixed to a mounting board of a molding machine.

[0002]

2. Description of the Related Art In a conventional molding machine, a support block is fixed to a lower part of a mounting board with bolts or the like, and a lower surface of a mold mounted by the support block is received. , It prevents the mold from dropping and misaligning.

However, in the conventional support block, the fixing position to the mounting board has to be changed each time according to the size and shape of the mold, and the mounting workability is poor, and the die replacement work is difficult. It has the problem of taking time.

In a recent molding machine, for example, as shown in Japanese Utility Model Publication No. 62-26175, a housing having a vertical swinging groove with a front end surface and a slidable housing. A clamp pin that is slidably fitted in the groove and that has a vertical front end face facing the brim of the die is formed as a horizontal jaw on the inside and a rear end is provided with a U-shaped concave section. , Is obliquely provided at the rear end of the housing, the rod of the piston is inserted into the recess of the clamp pin through the hole at the rear end, and the tip of the rod is provided at the rear end of the recess. A clamp unit having an air cylinder with a nut fixed and connected to the inner wall surface is attached to the movable side and fixed side mounting boards,
Mount the mold fixing device that moves the clamp pin along with the operation of the air cylinder and fixes the mold to each mounting board,
Although the mold replacement work is simplified, even in a molding machine equipped with a mold fixing device, the mounting position of the support block must be changed each time according to the size and shape of the mold. The workability as was poor.

The present invention has been invented in order to solve the above-mentioned conventional drawbacks, and an object of the present invention is not to be restricted by the size and shape of the mold, but the mold to be mounted. It is an object of the present invention to provide a mold supporting device in a molding machine capable of reliably supporting the mold and preventing its fall and displacement.

[0006]

Therefore, according to the invention of claim 1, the mounting block fixed to the lower part of the mounting board in the molding machine and the upper surface which is movably supported in the vertical direction with respect to the mounting block. A movable frame having a supporting portion on its inside and a driving member for moving the movable frame in the vertical direction with respect to the mounting block, and the movable frame moving upward with respect to the lower surface of the mold mounted on the front surface of the mounting board It is characterized in that the supporting portions of the above are abutted and supported.

According to a fourth aspect of the present invention, there is provided a mounting block fixed to a lower portion of a mounting board in a molding machine, a pantograph mechanism provided so as to be expandable and contractable with respect to the mounting block, and having a support portion at an upper portion thereof. It is characterized in that it comprises a driving member for driving the pantograph mechanism to expand and contract, and supports the supporting part of the pantograph mechanism by abutting it against the lower surface of the mold mounted on the front surface of the mounting board.

[0008]

According to the first aspect of the present invention configured as described above, after the mold is mounted on the mounting board of the molding machine, the movable frame is moved upward as the driving member is driven, and the supporting portion is supported by the metal. Abut on the lower surface of the mold to support it.

Thus, various dies can be reliably supported without being restricted by the size and shape of the dies and without changing the mounting position.

According to a fourth aspect of the present invention, after the mold is mounted on the mounting board of the molding machine, the pantograph mechanism is enlarged in accordance with the driving of the driving member to support the supporting portion by abutting the lower surface of the mold. .

As a result, various molds can be reliably supported without being restricted by the size and shape of the mold and without changing the mounting position.

[0012]

【Example】

 Claim 1 Hereinafter, an embodiment of claim 1 will be described with reference to the drawings.

FIG. 1 is a perspective view showing a state in which a mold supporting device is attached to a mounting board of a molding machine.

FIG. 2 is an exploded perspective view of the mold supporting device.

FIG. 3 is a vertical sectional view taken along the line III-III in FIG.

A movable side and a fixed side mounting board 1 of a molding machine (not shown) (FIG. 1 shows the movable side mounting board, but since the mounting state of the mold supporting device on the fixed side mounting board is the same, Mold support device 3 is provided at the center of the lower part (not shown).
Are fixed by bolts (not shown) or the like. The number of mold supporting devices 3 fixed to the mounting board 1 is set according to the size of the mold to be mounted, etc. It suffices to mount the device 3 at the center of the lower part of the mounting plate 1, and for a large mold, a plurality of mold supporting devices 3 at the lower part of the mounting plate 3 at substantially equal intervals. Further, the mounting board 1 has a large number of screw holes 1a for mounting the molds corresponding to various molds 27 having different sizes and shapes.
Are formed.

A pair of rails 7 are provided on the mounting block 5 of the mold supporting device 3 so as to extend in the vertical direction with a predetermined interval. A shaft support 9 is provided on the upper and lower parts of the mounting block 5 located between the rails 7.
Are provided respectively, and a feed screw 11 constituting a part of a drive member having an axis in the vertical direction is rotatably supported on these shaft support portions 9, and the feed screw 11 is attached to the lower shaft support portion 9. The electric motor 13 forming a part of the driving member is connected. A DC motor is suitable as the electric motor 13.

A guide portion 17 of a movable frame 15 is slidably supported on the rail 7 of the mounting block 5 in the vertical direction. The movable frame 15 has a substantially L-shaped vertical cross section, and a supporting portion 19 is provided on the upper portion thereof. Further, a nut portion 21 forming a part of a driving member is attached to the movable frame 15 located between the guide portions 17 so as to mesh with the feed screw 11, and the feed screw 11 rotating with the driving of the electric motor 13 The movable frame 15 is moved vertically. A valve (not shown) is used as a driving member.
It may be a fluid pressure cylinder that can be interlocked with.

A recess 23 is formed on the upper surface of the support portion 19, and a mold detector 25 is attached to the recess 23. The mold detector 25 may be either a proximity switch or a limit switch.

Next, the operation of the die supporting device 3 constructed as described above will be described.

FIG. 4 is a vertical sectional view showing a standby state.

FIG. 5 is a vertical sectional view showing a supporting state.

After the mold 27 to be mounted on the front surface of the mounting board 1 is arranged in a positioned state by a crane (not shown) or the like, a through hole 27a provided in the side edge of the mold 27 is arranged. Then, the fixing bolt 29 is fixed to the screw hole 1a of the mounting board 1 by screwing. Next, when the operation switch (not shown) of the control device is turned on to drive the electric motor 13 to rotate, the movable frame 15 is moved upward by the feed screw 11 which rotates in a predetermined direction in accordance with the drive. . Then, when the supporting portion 19 of the movable frame 15 contacts the lower surface of the mold 27 fixed to the mounting board 3, the mold detector 25 outputs a mold detection signal to the control device.

At this time, in the case of supporting the small mold 27, the movable frame 15 is moved upward to the position shown by the solid line in FIG. When supporting the die 27, the movable frame 15 is moved upward to the position shown by the alternate long and short dash line in FIG. 5 to bring the support portions 19 into contact with the lower surface of the die 27, respectively.

When the support portion 19 comes into contact with the lower surface of the die 27, the movement of the movable frame 15 is restricted and the current value applied to the electric motor 13 is increased.
The controller controls the supporting unit 1 based on the mold detection signal from the mold detector 25 and the increase in the current value applied to the electric motor 13.
It is judged that 9 has come into contact with the lower surface of the mold 27, and the electric motor 1
The drive of 3 is interrupted.

Incidentally, it is detected that the movable frame 15 is in contact with the mold 27 based on both the mold detection signal from the mold detector 25 and the increase of the current value flowing through the electric motor 13. In the present invention, the method of detecting the contact may be based on any one of the above.

Thus, in this embodiment, the movable frame 15
Can be moved upward by an arbitrary distance to support the mold 27, so that the mold 27 can be mounted without being restricted by the size and shape of the mold 27 and without changing its mounting position each time. It is possible to reliably support the die 27 and prevent its fall and displacement.

Claim 4 FIG. 6 is a perspective view showing a mold supporting apparatus according to claim 4.

The mounting block 33 of the die supporting device 31 is fixed to the center of the lower portion of the mounting board 1 by a bolt (not shown) or the like, and on the upper portion of the mounting block 33, a pair of lower portions forming a part of the pantograph mechanism. The lower part of the arm 35 is rotatably supported, and the upper part of the lower arm 35 has a pair of upper arms 3 forming a part of a pantograph mechanism.
7 is rotatably supported. And the upper arm 3
A support portion 39 is rotatably supported on the upper portion of 7, and a nut portion (not shown) forming a part of a driving member provided at a connecting portion between the upper arm 37 and the lower arm 35 is provided with a driving member. A feed screw 43, which constitutes a part, is rotatably supported.

On one side of the mounting block 33, a support wall 33a having an elongated hole (not shown) in the vertical direction is provided.
An electric motor 45, which constitutes a part of a driving member, is fixed to the support wall 33a so as not to rotate and is movable in the vertical direction. The feed screw 43 is connected to the rotating shaft of the electric motor 45.

In the mold supporting device 31 described above, the lower arm 35 and the upper arm 37 are expanded by the feed screw 43 which rotates in response to the driving of the electric motor 45, and the supporting portion 39 is moved upward, so that the mounting board 1 is mounted. Mold 27 attached to
Abut on the lower surface of the support.

As a result, the mold supporting device 31 is used for the mold 2
Without being restricted by the size and shape of 7, it is possible to reliably support and prevent dropping and displacement.

In the above description, the upper arm 37 and the lower arm 35 are combined in a diamond shape to form a pantograph mechanism, but as shown in FIG. 7, a pair of arms 49 and 51 are combined in an X shape. The upper and lower portions of one arm 49 are rotatably supported by the mounting block 33 and the support base 53, the upper and lower portions of the other arm 51 are rotatable at their lower ends, and the upper and lower portions of the other arm 51 are The lower part of the pantograph mechanism is rotatably supported by the mounting block 33 and the support base 53 so as to be movable. Further, a cylinder 55 as a driving member rotatably supported by the mounting block 33 with respect to a connecting portion of the pair of arms 49 and 51.
Of the mold mounted on the mounting board 1 by connecting the rod 55a of the above and vertically expanding and contracting the pair of arms 49 and 51 in accordance with the operation of the cylinder 55 to move the support base 53 in the vertical direction. You may support the lower surface of 27. still,
As a drive member, an electric motor is vertically movable and attached to a support wall 33b provided at one end of the attachment block 33 in a state of being prevented from rotating, and a pair of arms 49, A feed screw (not shown) that meshes with the nut portion provided in the connecting portion of 51 is connected, and the support base is moved in the vertical direction by the feed screw that rotates in accordance with the drive of the electric motor to move the mold 27. You may support the lower surface of.

[0034]

As described above, according to the present invention, it is possible to reliably support the mold to be mounted and prevent the mold from falling and shifting without being restricted by the size and shape of the mold.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state in which a mold supporting device is attached to a mounting board of a molding machine.

FIG. 2 is an exploded perspective view of a mold supporting device.

FIG. 3 is a vertical sectional view taken along the line III-III in FIG.

FIG. 4 is a vertical sectional view showing a standby state.

FIG. 5 is a vertical cross-sectional view showing a supporting state of a mold.

FIG. 6 is a perspective view of a mold supporting state according to claim 4;

FIG. 7 is a perspective view showing a modification of claim 4.

[Explanation of symbols]

 1 Mounting Board 3 Mold Support Device 5 Mounting Block 11 Feed Screw 13 Electric Motor 15 Movable Frame 19 Support Part 27 Mold

Claims (7)

[Claims] 1. A mounting block fixed to a lower portion of a mounting board in a molding machine, a movable frame which is movably supported in the vertical direction with respect to the mounting block, and has a support portion on an upper surface, and a mounting block. And a drive member for moving the movable frame in the up-down direction, and the supporting portion of the movable frame moving upward is brought into contact with and supported by the lower surface of the mold mounted on the front surface of the mounting board. Mold supporting device for molding machine. 2. A drive member, which comprises an electric motor and a feed screw rotatably supported on the upper and lower portions of a mounting block and partly meshed with a movable frame, rotates with the drive of the electric motor. The mold supporting device according to claim 1, wherein the movable frame is movable in the vertical direction with respect to the mounting block by means of a feed screw. 3. The mold support according to claim 1, wherein the driving member is composed of an interlockable cylinder, and the movable frame can be stopped and held at an arbitrary vertical position with respect to the mounting block according to the operation of the cylinder. apparatus. 4. A mounting block fixed to a lower part of a mounting board in a molding machine, a pantograph mechanism provided so as to be expandable and contractable with respect to the mounting block and having a support portion on an upper part, and an expansion / contraction drive of the pantograph mechanism. A mold supporting device for a molding machine, comprising a driving member and supporting a supporting portion of a pantograph mechanism by abutting against a lower surface of a mold mounted on a front surface of a mounting board. 5. The pantograph mechanism is constituted by a feed screw which is driven by the electric motor, wherein the drive member comprises an electric motor and a feed screw rotatably meshed with a connecting portion of a link portion of the pantograph mechanism. The mold support device according to claim 4, wherein the mold support device is expandable and contractible. 6. The mold supporting apparatus according to claim 1, wherein the driving member is composed of an interlockable cylinder, and the pantograph mechanism can be expanded and contracted at an arbitrary position with respect to the mounting block according to the operation of the cylinder. 7. The mold supporting apparatus according to claim 2, wherein the electric motor comprises a DC motor, and the supporting state of the mold can be detected based on a change in current value applied to the DC motor.