JPH03264122A - Bending machine - Google Patents

Abstract

PURPOSE:To easily execute the positioning of the plate material by changing the width of the holding die member having the reference surface to execute positioning at the back side in correspondence with the width of plate material, moving the plate material to the working part, and positioning it. CONSTITUTION:When the servo motor 10 is driven, the ball screws 14, 24 rotate by the prescribed amount, and also the moving key 32a is moved in the right direction, the segment die 21b is selected. The rotated amount of the motor 10 is set corresponding to the width dimension of the plate material W. The die 21b selected with the reversing mechanism 30 is reversed and inserted between the both blocks 21a. In such a way, the upper die 21 is set to the width of the plate material W. The plate material W is moved, brought in contact with the contact surface 21d and is positioned. The upper die 21 is lifted, the plate material W is inserted between the lower dies, the upper die 21 is descended, the plate material W is crimped between the lower die and the above, the bending die is driven and the bending is executed. The positioning of the plate material can be easily executed.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bending machine that bends a plate material held by a presser die member.

[Conventional technology]

BACKGROUND ART A bending machine has conventionally been used to bend a plate material. This bending machine is mainly used for
It has a work table on which a plate material to be processed is placed, a moving mechanism that moves the plate material on the work table, and a processing section that performs a bending process on the plate material. Further, an end locator that can be retracted and retracted is provided on the work table for positioning the plate material at a predetermined position in the front-rear direction of the work table. A plurality of pairs of end locators are provided on both sides of the widthwise central portion of the work table. Further, the processing section is provided with a presser die for clamping the plate material and a bending die for bending the plate material.

When positioning the plate, a pair of predetermined end locators corresponding to the width of the plate are projected onto the work table, one on each side. Then, the plate material is moved by the moving mechanism, and both ends of the end surface of the plate material are brought into contact with the side surfaces of the end locator, thereby performing positioning.

[Problem to be solved by the invention]

In the above-mentioned conventional bending machine, in order to accurately position various plate materials with different width dimensions, all of the multiple pairs of end locators are aligned in the longitudinal direction of their sides (plate contact surfaces). Furthermore, the plate contact surface of each end locator must be arranged parallel to the presser die.

However, it is not easy to adjust the positions of all the pairs of end locators in this way.

An object of the present invention is to provide a bending machine that can easily position a plate and has a simple structure.

[Means to solve the problem]

The bending machine according to the present invention includes a presser die member whose width can be changed according to the width of the plate material, and a moving mechanism that moves the plate material to a processing section. The presser mold member has a reference surface on its back side for abutting against the plate material and positioning the plate material.

[Effect]

In the bending machine according to the present invention, when positioning the plate, the moving mechanism moves the plate toward the processing section. Then, the plate material is brought into contact with the reference surface on the back side of the presser die member. Thereby, the positioning of the plate material is performed. Therefore, complicated positional adjustment using an end locator as in the prior art is not necessary, and the positioning of the plate material can be easily performed. Further, the width of the presser die member is changed depending on the width of the plate material. Therefore, it is no longer necessary to select an end locator depending on the width of the plate material as in the conventional case, and positioning becomes easier. Furthermore, since the conventional end locator and its drive mechanism are not required, the structure can be simplified.

〔Example〕

4 and 5 show a bending machine according to an embodiment of the present invention. In these figures, oriyamage processing machine 1
is mainly composed of a processing section 2 that performs bending processing on the plate material W, a work table 3 placed in front of the processing section 2, and a work table 3 placed in the center of the work table 3 for moving the plate material W in the front and back direction. It is composed of a plate moving mechanism 4 and a control device 5 disposed on the side of the processing section 2.

The work table 3 has a fixed table 3a and left and right auxiliary tables 3b. The fixed table 3a has
Positioning members 6a and 6b for positioning (centering) the plate W placed on the work table in the width direction are movably provided in the radial direction 1i+J of the plate W.

The plate material moving mechanism 4 is provided so as to be movable in the front-back direction on the mousse 4a. At the front end of the plate moving mechanism 4,
A pan F'7 for holding the plate W is provided, and this pad 7 allows the plate W to be moved forward and backward or to change direction.

A schematic configuration of the processing section 2 is shown in FIGS. 1 to 3.

Note that FIG. 1 is a side view, FIG. 2 is a front view, and FIG. 3 is a schematic plan view.

The processing section 2 mainly includes an upper mold 21 attached to a ram 9 that can be raised and lowered, and a lower mold 2 fixed on a lower frame 8.
2, and a bending die (not shown) provided behind the upper die 21 and the lower die 22 (to the left in FIG. 1).

The L mold 21 is composed of a plurality of mold blocks divided in the width direction of the plate material W (horizontal direction in FIG. 2).
It has block molds 21a arranged at both ends and a plurality of segment molds 21b arranged between both block molds 21a. The segment mold 21b is held by a segment holder 23 formed integrally with one of the block molds 21a, and can be inserted between the two block molds 21a. Furthermore, a reference surface 21d that can come into contact with the end surface of the plate material W is formed on the back side of the block mold 21a. As shown in FIG. 3, the segment mold 21b is shorter in length in the longitudinal direction by S than the block mold 21a.

A ball screw 14 is inserted into the block mold 21a. The ball screw 14 has reverse threads 14a and 14b having the same pitch on both sides of the axial center. The block type 21a has each threaded portion 14a.
, 14b. With this configuration, when the ball mesh 14 rotates, the block mold 21a moves the ball mesh 14 toward or away from each other.

The segment mold 21b is connected to the reversing mechanism 30. This reversing mechanism 30 extracts a predetermined number of segment molds 21b according to the width of the plate material W, and inserts the extracted segment molds 21b between the block molds 21a at both ends by inverting them by 180 degrees. It is something. The reversing mechanism 30 is
A movable key 32a and a fixed key 32 for selectively connecting the reversing shaft 31 and the reversing shaft 31 and the segment mold 21b.
It has b. The reversing shaft 31 is configured to be able to rotate forward and reverse approximately 180'. Further, a segment mold 21b is mounted on the outer periphery of the reversing shaft 31 so as to be movable in the axial direction but not rotatable in the circumferential direction. The movable key 32a is connected to the reversing shaft 31
It is movably attached to the top. In addition, the movable key 32a
A ball nut 28 is attached to one end. A ball screw 24 provided in parallel with the ball screw 14 is rotatably screwed into the ball nut 28. Furthermore, the fixed key 32b is immovable. In addition, upper mold 2
Inclined surfaces 21c and 22c are formed at the rear end portions of the molds 1 and 22, respectively.

These inclined surfaces 21c and 22c allow the edge of the plate material W to be bent at an acute angle.

Furthermore, pulleys 35 and 36 are attached to one end of the ball screws 14 and 24, respectively. These pulleys 35
An evening/imming helmet 37 is wound between the ends and 36. Further, a servo motor IO is arranged coaxially with the ball screw 14. This servo motor 10
The rotating shaft of is connected to one end of the ball screw 14.

Next, the operation will be explained.

When positioning the plate material W, first, the plate 'fA W is placed between the positioning members 6a and 6b on the work table 3. And each positioning member 6a.

6b respectively inward. As a result, each positioning member 6a, 6b comes into contact with both end faces of the plate material W in the width direction, and centering of the plate material W is performed.

Next, the servo motor IO is driven to rotate the ball screw 14 by a predetermined amount via the pulley 35. Then, the block mold 21a moves inward, that is, the segment holder 23 moves to the left in FIG.

On the other hand, the rotation of the pulley 35 is transmitted to the ball hitch 24 via the timing belt 37 and the pulley 36, and the hall hitch 24 rotates by a predetermined amount. Then, to ball net 24-
- The movable key 32a, whose ends are screwed together, moves on the shaft to the right in FIG. As a result, the selection operation of the segment type 21b is performed. Note that the rotation amount of the servo motor 10 is appropriately set according to the width dimension of the plate material W. Next, the reversing mechanism 3
0, the selected segment mold 21b is inverted and inserted between both frontk molds 21a. In this way,
The upper mold 21 is set to have a predetermined width corresponding to the width of the plate material W. Next, the upper mold 2 is driven by the ram 9.
1 is lowered to bring the upper mold 21 into contact with the F turret mold 22.

Next, the plate material W is held by the band 7 of the plate material moving mechanism 4, and the plate material moving mechanism 4 is moved a predetermined amount toward the processing section 2 side. As a result, the plate material W also moves toward the processing section 2, and as shown in FIG. 3, the end surface of the plate material W comes into contact with the plate material abutment surface 21d of the block mold 21a.

Thereby, the positioning of the plate material W is performed. Therefore, there is no need for complicated position adjustment as in the prior art, and positioning can be performed easily. Also, at this time, block type 2
1a is set to a predetermined width corresponding to the width dimension of the plate material W. Therefore, each plate contact surface 2 of the block type 21a
Both ends of the end surface of the plate material W are in contact with 1d. This makes it possible to easily and accurately position the plate material W, especially when the end surface of the plate material W is uneven. Furthermore, since the conventional end locator and its drive mechanism are not required, the overall structure can be simplified.

After the positioning is completed, when bending the plate material W, the upper die 21 is raised and the plate material W is inserted between the upper die 2J and the lower die 22. Next, the upper mold 21 is lowered again and the plate material W is gripped between the upper mold 21 and the lower mold 22. Then, the bending die is driven to perform the bending process.

[Other Examples]

In the embodiment described above, the plate material W is positioned by the block molds 21a arranged at both ends of the plate material W in the width direction, but the application of the present invention is not limited thereto.

For example, the back side of the segment mold 21b is connected to the block mold 2.
A reference surface may be formed so as to protrude toward the front side of the segment mold 21b, and can come into contact with the plate material W on the back side of the segment mold 21b.

〔Effect of the invention〕

In the bending machine according to the present invention, since the presser die member has a reference surface that comes into contact with the plate material, the plate material can be easily positioned using this reference surface. Furthermore, a processing machine with a simple structure can be realized.

[Brief explanation of drawings]

FIG. 1 is a schematic side view in longitudinal section of a processing section of an embodiment of the present invention, FIG. 2 is a schematic front longitudinal section of the processing section, FIG. 3 is a schematic plan view of the processing section, and FIG. FIG. 5 is an overall perspective view of a bending machine according to an embodiment of the present invention, and FIG. 5 is a plan view thereof. 4... Plate moving mechanism, 21... Upper mold, 21a...
・Block type, 21b...Segment type, 21d...
- Plate contact surface.

Claims (1)

[Claims] (1) A presser mold member whose width can be changed according to the width of the plate material,
a movement mechanism for moving the plate material to a processing section, and the presser die member has a reference surface on its back side for abutting against the plate material and positioning the plate material. .