JPH0569063A - Device for adjusting pass line of feeding device for press machine - Google Patents

Abstract

PURPOSE:To provide a device for adjusting a pass-line (a height of supplying feed) of a continuously material feeding device of a press machine which works a automatic bending or stamping, etc. CONSTITUTION:A feeding device 20 is mounted on a supporting body (50), a block 30 having an inserting hole (32) of the supporting body 50 is fixed on a press machine body (10), the supporting body 50 in inserted in this inserting hole 32, a guide rod (51) to stop the turning of the supporting body 50 against the block 30 is provided, the supporting body 50 in connected to an electric motor 80 which elevates and lowers the supporting body 50 through an elevating/lowering mechanism, two divided parts 32b, 32c are formed on the fixed block 30 in order to prevent the supporting body 50 from moving upward or downward, an air cylinder 90 to pressurize the two divided parts is provided, a piston (93) is attached between a piston rod 91 of this air cylinder and a moving part 32 of the two divided parts and both top ends of this piston are made in semi- spherical surfaces.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pass line adjusting device for a feeder for a press machine. More specifically, the present invention relates to a device for adjusting a pass line (feeding height) of a continuous material feeding device of a press machine that performs automatic bending, stamping and the like.

[0002]

2. Description of the Related Art In a device for pressing a continuous strip-shaped material with a press having an upper die and a lower die, the strip-shaped material is fed by a feed roll of a feeding device. The material supply feed height (pass line) of this feeder must be matched with the height of the upper and lower molds of the press machine.

The height (pass line) of the feed material changes when the die attached to the press body is replaced. That is, conventionally, as shown in FIG. 8, a bracket 130 with an elongated hole 130a is attached by a bolt 131 to a press body 10 for attaching an upper die 11 and a lower die 12, and a feeding device is mounted on the bracket 130. 20 is mounted,
Upper mold 11 and lower mold 1 used for the press body 10
According to 2, the pass line L changes.

When adjusting the pass line L, a large number of bolts 131 of the bracket 130 are loosened, and the bracket 130 is moved up and down together with the feeding device 20, so that the bolts 131 are moved.
Temporarily secure the bracket, and in that state, the bracket 13 for supporting the feeder
0, the fine adjustment bolt 133 screwed into the fine adjustment bolt bracket 132 is turned to finely adjust the height of the bracket 130, and then the feeder supporting bracket 13 is mounted.
The pass line L is set to a desired height by fully tightening the bolt that is tightening 0.

[0005]

In the conventional apparatus as described above, in order to adjust the pass line L, a large number of bolts 131 holding the bracket 130 for supporting the feeder are loosened, and the pass line L of the feeder 20 is adjusted. Need to be adjusted, and then the bolt 131 should be tightened.
This work is required every time the mold is replaced, and in addition, it is necessary to make adjustments while observing the operating state of the press machine after the mold is replaced. Therefore, the worker requires a great deal of labor and skill.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems and to provide a device capable of easily adjusting the pass line L of the feeding device for a press machine.

[0007]

According to the present invention, a feeder is placed on a support, a block having an insertion hole for the support is fixed to a press body, and the support is inserted into the insertion hole. Means are provided for preventing the support from rotating with respect to the block, and the support is connected to an electric motor that raises and lowers the support via an elevating mechanism. The above-mentioned object is achieved by a path line adjusting device of a feeder for a press, which is provided with means for preventing movement and holding the feeder at a predetermined height.

[0008]

According to the present invention, when the support on which the feeding device is placed is moved up and down by the electric motor to reach a desired position, the support is moved to a fixed position by means for preventing vertical movement. The device is fixed in its position.
Therefore, there is no need to loosen or tighten the bolt for adjusting the pass line as in the conventional case.

The means for preventing vertical movement of the support in the present invention is preferably composed of a halved portion formed on the fixed block and a device for pressing the halved portion. By doing so, the support body is firmly held by the two-divided portions of the block, so that the support body is prevented from moving up and down.

In order to prevent the support from moving up and down, 2
The pressing device for pressing the cleaving part comprises a fluid pressure cylinder and a piston mounted between the piston rod of the cylinder and the movable part of the cleaving part, and both ends of the piston are hemispherical surfaces. Therefore, it is preferable to press the halved portion with a large force using a small fluid pressure cylinder to reliably prevent the support body from moving up and down.

The lifting mechanism of the present invention may be composed of a worm connected to the electric motor, a worm wheel meshing with the worm, and a screw rod projecting from the support and meshing with the worm wheel. With this configuration, the feeding device can be moved up and down by a small electric motor, and its accuracy can be sufficiently improved. In this case, it seems that the vertical movement prevention means is unnecessary by self-locking with the worm and the worm wheel, however, there is a small gap between the worm and the worm wheel, and between the worm wheel and the screw rod. Because of the mechanical play,
In order to prevent the feed device from vibrating during the operation of the press machine due to this play, the vertical movement prevention means is provided in the present invention. This can completely prevent vibration.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring now to FIGS.
The present invention will be described in detail with reference to FIG.

FIG. 1 is a partial cross-sectional front view of a pass line adjusting device for a press feeding device according to the present invention, FIG. 2 is a view taken along the line II--II in FIG. 1, and FIG. It is a III-III arrow line view. In FIG. 1, a fixing block 30 is fixedly supported by a bolt 31 (see FIG. 2) on the side surface of the press body 10. The fixed block 30 is the tubular portion 5 of the support body 50.
It has an insertion hole 32 for inserting 0a, and the support 50 can be vertically moved up and down along the insertion hole 32.

A guide rod 51 is provided downward from the support 50 so that the support 50 does not rotate with respect to the fixed block 30.
Is fastened with a bolt 52, and the guide rod 51 is engaged with a guide hole 33 formed in the fixed block 30 to prevent steadying. Instead of the guide bar 51, a steady rest can be provided by providing a key and a key groove (not shown) on the peripheral surface of the support body 50 and the insertion hole 32 of the fixed block 30.

A feeder 20 having a conventionally known feed roll 21 is fixedly mounted on a support 50 by means of bolts 22. A cylindrical tubular portion 50a projects from the support body 50, and a node portion 50b is provided in the tubular portion 50a. The screw rod 40 is attached to the lower end surface of the joint 50b by the bolt 41.
Are integrally fixed by. The threaded portion of the threaded rod 40 is preferably a trapezoidal thread.

A lid member 60 having a small hole is fastened with a bolt 61 at the lower end of the fixed block 30. The lower end shaft portion of the screw rod 40 is inserted into a small hole of the lid member 60 and guided to prevent the screw rod 40 from bending. A bolt 62 is screwed into a female screw (not shown) formed in the axial direction from the lower end surface of the threaded rod 40 via a washer 63, and the washer 63 allows the uppermost position of the threaded rod 40 and the support body 50. Are regulated.

As shown in FIGS. 4 to 6, the fixed block 30 is formed with a cylindrical insertion hole 32, and the upper end of the cylindrical insertion hole 32 extends to the middle portion of the main body. A thin lateral slit 32a separates from the main body, and the separated upper part is divided into two parts 32b, 32.
It is assumed to be c. Therefore, the insertion hole 3 of the fixed block 30
The upper part of the periphery of 2 can be opened and closed by the two split parts 32b and 32c.

A worm wheel 70 is screwed into the thread portion of the above-described screw rod 40, and the worm wheel 70 is rotatably provided in the fixed block 30.
It meshes with 1.

As shown in FIGS. 2 and 3, the worm 7
A pulley 73 is provided on the first shaft 72. Also,
An electric motor 80 with a speed reducer is mounted on the motor block 38 attached to the fixed block 30, and a pulley 83 is provided on an output shaft 82 of the electric motor 80. A belt 85 is stretched between the pulley 73 and the pulley 83. Therefore, the rotation of the motor 80 causes the pulleys 73, 8 to
The worm shaft 72 and the worm 71 are rotated via the belt 3 and the belt 85, and the rotation of the worm 71 is transmitted to the screw rod 40 via the worm wheel 70 so that the screw rod 40 moves up and down together with the support body 50 and the feeding device 20. Is becoming

The split part 32 of the fixed block 30 described above.
By tightening b and 32c, the support body 50 inserted into the insertion hole 32 of the fixed block 30 can be held so as not to slide in the vertical direction.

To do this, as shown in FIG.
The air cylinder 90 is supported in a rectangular cylinder insertion box 33 formed on the fixed block 30, and the fixed block 30 is supported.
The toggle pin mechanism is formed by connecting one end 32c of the two split parts and the tip of the piston rod 91 of the air cylinder 90 by a piston 93.

When the air cylinder is advanced to the right in FIG. 2, the split portion is loosened, and when the air cylinder is retracted to the left, the leftward force P of the piston rod 91 is applied to the piston as shown in FIG. It is enlarged to 1 / tangent of the angle θ formed by 93, and the split portion 32b is pressed with P / tan θ. With this toggle pin mechanism, the fixed block 30
It is possible to generate a force that is 10 times or more the pulling force of the piston rod 91 of the air cylinder 90 as the pressing force to the movable portion 32c of the two split parts.

To ensure this operation, the piston 93
Both tip ends 93a, 93b are hemispherical tip ends, and the tip end of the piston rod 91 with which the piston 93 engages and the spherical recessed portions 91a, 32 are provided in the split portion 32c.
forming d.

In order to prevent the piston rod 91 from escaping to the opposite side of the split portion 32c due to the force acting on the piston 93 between the piston rod 91 and the split portion 32c,
A bolt 95 with a lock nut 97 is screwed on the opposite side of the cylinder insertion box 33 from the split portion 32c, and a piston 96 similar to the above-mentioned piston 93 is mounted between the bolt 95 and the piston head 91. There is. Both ends of the piston 96 are also hemispherical and are engaged with hemispherical recesses formed in the piston head 91 and the bolt 95.

Further, as shown in FIGS. 1 and 2, in order to detect the height of the feeding device 10, the support body 50 is connected to the shaft 56a of the potentiometer 56 via the potentiometer supporting bracket 55, At the same time, a needle 57 is attached to the potentiometer supporting bracket 55 so that the height of the feeding device can be determined by the scale 10a attached to the press body 10. Further, the pass line L may be displayed on the instrument by a signal from the potentiometer 56, and the support 50, and hence the pass line L may be automatically adjusted according to the signal.

[0026]

According to the present invention, when the support on which the feeding device is mounted is moved up and down by the electric motor to reach the desired position, the support is set in the fixed position by the means for preventing the vertical movement. Fixes the feeder at that position. Therefore, there is no need to loosen or tighten the bolt for adjusting the pass line as in the conventional case.

As shown in the embodiment, the means for preventing the vertical movement of the support body is composed of a split portion formed in the fixed block and a device for pressing the split portion so that the block is split in two. By holding the support body firmly by the parts, the support body is prevented from moving up and down. Moreover, it is possible to prevent the feeder from vibrating during the operation of the press machine due to minute mechanical play existing between the worm and the worm wheel, and between the worm wheel and the screw rod, and it is possible to completely prevent the vibration.

In order to prevent the support from moving up and down, 2
A pressing device for pressing the cleaving part is composed of a fluid pressure cylinder and a piston mounted between the piston rod of the cylinder and the movable part of the cleaving part as in the embodiment. With a hemispherical surface, it is preferable to reliably prevent the support body from moving up and down with a small fluid pressure cylinder.

Further, the lifting mechanism has a worm also connected to an electric motor, a worm wheel meshing with the worm,
It may be composed of a threaded rod protruding from the support and meshing with the worm wheel. By configuring in this way,
The feeding device can be moved up and down by a small electric motor, and its accuracy can be sufficiently enhanced.

[Brief description of drawings]

FIG. 1 is a front view of a pressing machine equipped with a pass line adjusting device according to the present invention.

FIG. 2 is a view taken along the line II-II in FIG.

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

4 is a vertical cross-sectional view of the insertion portion shown in FIG.

5 is a view taken along the line VV of FIG.

FIG. 6 is a perspective view of an insertion portion of the fixing block of the present invention.

FIG. 7 is a component force diagram showing a state of action of force between the cylinder of the present invention and the split portion.

FIG. 8 is a front view of a conventional press machine.

[Explanation of symbols]

 10 Press Main Body 20 Feeding Device 30 Fixed Block 32c Two Split Parts 50 Supporting Body 51 Guide Rod 80 Electric Motor 90 Air Cylinder 91 Piston Rod 93 Piston

Claims (4)

[Claims] 1. A feeder is placed on a support, and a block having an insertion hole for the support is fixed to a press body,
The support is inserted into the insertion hole, and means for preventing the support from rotating with respect to the block is provided.
The support is connected to an electric motor that raises and lowers the support via an elevating mechanism, and means is provided for preventing the support from moving in the vertical direction and for holding the feeding device at a predetermined height. A special feature is a path line adjustment device for the feeder for press machines. 2. A means for preventing vertical movement of the support,
2. The pass line adjusting device according to claim 1, comprising a two-divided portion formed on the fixed block and a device for pressing the two-divided portion. 3. The pressing device comprises a fluid pressure cylinder and a piston mounted between a piston rod of the cylinder and a movable part of the split portion, and both ends of the piston are hemispherical surfaces. The path line adjusting device according to claim 2, wherein 4. The lifting mechanism comprises a worm connected to the electric motor, a worm wheel meshing with the worm, and a screw rod projecting from the support and meshing with the worm wheel. Item 1,
The pass line adjusting device according to 2 or 3.