JPH07275940A - Method and device for setting split die in bending machine - Google Patents

Abstract

PURPOSE:To shorten resetting time of split dies and also to contrive efficient resetting operation of split dies by merely moving outward only the split dies that are unnecessary for bending. CONSTITUTION:A rod member 65, which is attached to cylinders 53R, 53L for detaching, is fixed on the outermost split dies L13, R13 located the most outside of the plural split dies L1 to L13, R1 to R13 that are arranged in the longitudinal direction of a work to be worked and are freely movable. At the time of bending of a work, the unnecessary split dies that are outside of the length of a selected work are continuously connected properly to the outermost split dies L13, R13; the rod member 65 is moved outward by the operation of the detaching cylinders 53R, 53L; and the unnecessary split dies are thereby integrally moved outside the bending.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for aligning split molds in a bending machine and a device therefor, and more specifically, it divides a work centered at a bending center into a plurality of pieces in the longitudinal direction. The present invention relates to a method for aligning split dies in a bending machine and a device therefor, which selects a split die according to the length of a work and retracts the split dies unnecessary for bending.

[0002]

2. Description of the Related Art Conventionally, as a width aligning device for a split mold in a bending machine, for example, Japanese Patent Laid-Open No. 63-207419 has been proposed.
The publication is known. That is, in this publication, the replacement first rod is connected to the innermost hollow die, and each split mold is once moved integrally outward by the outward movement of the replacement first rod. It

After that, a connecting member provided in a desired split mold is appropriately locked to the first rod, and the desired split mold corresponding to the bending width is moved toward the center to thereby bend the bending width. The mold according to is selected.

[0004]

By the way, in the above-described conventional width aligning device, all the split molds must be moved outward from the center before performing the width aligning. There is a problem that it is inefficient and walks to a longer time because the split molds that are unnecessary for the bending process are walked outward.

An object of the present invention is to reduce the width-shifting time of the split dies and improve the efficiency of the width-shifting work of the split dies only by outwardly moving only the split dies unnecessary for bending. It is an object of the present invention to provide a method for aligning the widths of divided dies in a bending machine and a device therefor.

[0006]

In order to achieve the above-mentioned object, the method of aligning the divided dies in the folding machine of the present invention is a plurality of movable divisions provided in the longitudinal direction of the work to be processed. The rod member mounted on the outer shifting cylinder is fixed to the outermost split mold located on the outermost side of the mold,
When bending a work, unnecessary split dies outside the length of the selected work are continuously connected to the outermost split dies as needed, and the rod member is moved outward by the operation of the cylinder for outward movement. It is characterized in that the unnecessary split mold is integrally moved to the outside of the bending process by moving it.

Further, the width aligning device in the bending machine of the present invention comprises a plurality of movable split dies provided in the longitudinal direction of the workpiece to be processed, and the outermost one of the plurality of split dies. , A rod member fixed to the outermost split mold and mounted on the outer shifting cylinder, an engagement portion provided at one end of each split mold of the plurality of split molds, and each split mold. The engaged portion provided at the other end of the divided die and the engaging portion at one end of any divided die are provided in each divided die to disengage from the engaged portion at the other end of the adjacent divided die. And a fixing means.

In the split mold width aligning device of the bending machine, the engaging portion is a convex portion and the engaged portion is a concave portion, and the fixing means is provided in each split die. It is desirable that the fixed portion is provided with a fixed portion that can be engaged with and disengaged from the fixed portion, and that the fixed portion is a connecting pin attached to the cylinder.

[0009]

[Advantage] By adopting the width-dividing method of the split dies and the apparatus therefor in the bending machine as described above, the step of moving all the split dies to the outside once is eliminated, and the splitting unnecessary for the bending is performed. By moving only the mold outward, the width-shifting time of the split molds can be shortened, and the efficiency of the width-shifting work of the split molds can be improved.

[0010]

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

Referring to FIG. 5, a work table device 3 is arranged in front of the bending machine 1. The work table device 3 is already known as disclosed in, for example, Japanese Patent Laid-Open No. 1-309729, so a detailed description thereof will be omitted. However, the work table 5 of the work table device 3 does not carry a work. Placed. The work is clamped by the work clamp device 7 provided in the work table device 3, and is rotated by the work revolving device 9 as required.

Therefore, the work carried in and placed on the work table 5 is clamped by the work clamp device 7 in the substantial center of the work and moved to the bending machine 1 side by the required movement amount. The bending work is performed on one side of the work. Next, the work is retracted and rotated by, for example, 90 degrees by the work revolving device 9, and then moved forward to bend the other side of the work. By bending the four sides of the work as described above,
For example, a box-shaped bent product can be obtained.

The bending machine 1 has a fixed frame 11, and a pivot 13 is provided above the fixed frame 11.
An elevating frame 15 is provided so as to be swingable in the vertical direction in FIG.

A lower frame 17 is fixed to the front portion (left portion in FIG. 5) of the fixed frame 11, and on the lower frame 17 in the left-right direction (direction orthogonal to the paper surface in FIG. 5). A bottom die 19 as a stretched fixed die is provided. An upper frame 21 is fixed to the front part of the elevating frame 15, and a lower part of the upper frame 21 is provided with a replaceable top die 23 as a movable mold facing the bottom die 19. A mold exchanging unit 25 is provided at a substantially central portion of the top die 23.

On the movable frame 15 above the upper frame 21, a vertical movement drive mechanism 27 having, for example, an eccentric cam is provided. The vertical drive mechanism 27 is provided with a gear 29, and a drive gear 33 is meshed with the gear 29 via another gear 31. An output shaft of a drive motor 35 provided on the fixed frame 15 is attached to the drive gear 33. The vertical movement mechanism 27
One end of the arm member 37 is integrated with the other end, and the other end of the arm member 37 is attached to the lower frame 17 by a pivot 39.
It has been installed.

With the above structure, when the drive motor 35 is driven, the drive gear 33 is rotated. This drive gear 3
By the rotation of 3, the eccentric cam of the vertical motion drive mechanism 27 is rotated via the gears 31 and 29. The rotation of the eccentric cam causes the arm member 37 to descend with the pivot 39 as a fulcrum, so that the top die 23 descends via the upper frame 21. Therefore, the work placed on the bottom die 19 is pressed and fixed by the cooperation of the bottom die 19 and the top die 23 when the top die 23 descends.

The fixed frame 11 and the lifting frame 15
The front and back bending dies 41A are respectively rotatable.
41B is provided. This bending die 41A, 41B
The rotary arm members 43 and 45 are provided at one end thereof, and the other ends of the rotary arm members 43 and 45 are provided at a bending frame 47 which can be moved back and forth (left and right in FIG. 5). A drive mechanism for vertically moving the rotating arm members 43 and 45 is already known, and therefore its explanation is omitted.

With the above-described structure, the bending die 41A or the bending die is caused by vertically swinging the rotating arm member 43 or the rotating arm member 45 on the work pressed and fixed by the bottom die 19 and the top die 23. Type 4
1B is oscillated, and bending processing of forward bending or reverse bending is performed.

At the lower part of the upper frame 21, as shown in FIG. 1, a mold supporting beam 49 is provided. A replaceable center mold C provided in the mold changing unit 25 is provided in the longitudinal direction of the mold supporting beam 49, that is, substantially in the center in the left-right direction in FIG. The left center punching die L0 is attached to the die supporting beams 49 on the left and right portions of the replaceable center die C.
Left side reference molds L1 to L13 as split molds
However, right reference dies R1 to R13 as split dies are provided via the right hollowing die R0. As the center mold C, for example, a center mold C1 for each 5 mm unit
~ C20 is provided and can be replaced.

The left and right reference molds L1 to L13,
A cylinder 51 as a fixing means for fixing each reference mold is provided above the R1 to R13. In addition, the mold supporting beam 49 includes moving cylinders 53L and 53R.
Are equipped with these moving cylinders 53L, 53R
Is operated to select each cylinder 51, and to operate the cylinders 51, the left and right reference molds L1 to L13, R1 to
Any one of R13 is selected, and the length of the reference mold is determined to be a desired length.

The replaceable center mold C is carried out by a mold changing unit 25 provided at a substantially central portion of the upper frame 21. In addition, 20 pieces of various replacement center dies C0 to C20 of the center die C are housed in the die magazine 55 attached to the upper frame 21 above the die replacement unit 25.

The outermost reference mold R is attached to the rod members 57R and 57L mounted on the outside cylinders 53R and 53L.
13 and L13 are attached.

With the above-mentioned structure, the outer cylinders 53R,
When 53L is operated, the outermost reference molds R13 and L13 are moved to the outside via the rod members 57R and 57L as shown by the dotted line in FIG.

A guide rail 59 extending in the left-right direction is laid on the mold supporting beam 49, and left and right center punching dies L0, R0; left and right reference dies are provided on the guide rail 59. L1 to L13 and R1 to R13 are movably provided.

For example, as shown in FIGS. 2, 3 and 4, a sliding member 63 is attached to the inside of the upper portion of the right reference mold R1, R2 by a plurality of bolts 61. The member 63 is slidably provided on the guide rail 59. A rod member 65 is provided on each of the right reference molds R1 and R2. One end of the rod member 65 has a convex portion 65A as an engaging portion, and the other end has a concave portion 65B as an engaged portion. Is provided. For example, the convex portion 65A of the right reference mold R1 is the concave portion 6 of the adjacent right reference mold R2.
It is provided on 5B so that it can be engaged and disengaged.

A cylinder 51 as a fixing means is provided on the right side reference molds R1 and R2. The right reference molds R1 and R2 are provided with a connecting pin 67 as a fixed portion mounted on the cylinder 51 and a connecting tapered hole 69 as a fixed portion provided on the rod member 65.

With the above-mentioned structure, the outer cylinders 53R,
When 53L is operated to move the rod members 57R and 57L inward, for example, the right reference mold R2 moves inward (left side in FIG. 3) with respect to the right reference mold R1. A convex portion 65A which is an engaging portion provided at one end of the rod member 65 is engaged with a concave portion 65B which is an engaged portion provided at the other end of the rod member 65 in the right reference mold R2. Become. Also,
By performing the reverse operation, the convex portion 65A and the concave portion 65A
B will come off.

When each of the cylinders 51 is operated to move the connecting pin 67 upward in FIG. 3, the connecting pin 67 is connected to the connecting taper hole 6 formed in each rod member 65.
9 will be connected and clamped. Further, by performing the reverse operation, the connecting pin 67 is detached from the connecting tapered hole 69 and is unclamped.

Although only the right reference molds R1 and R2 have been described, the other structures have the same structure and operation.

When the length of the work to be bent is changed, it is necessary to select the reference mold according to the length of the work. For example, if the length of the work is center die C, left side,
Right side hollow die L0, R0 Further left side, right side reference die L
When the bending process is performed by adding the widths of R1 and R1, the left and right reference molds L2 to L13 and R2 to R13 must be retracted outward. At this time, since the projection 65A at one end of each of the left and right reference molds L2 to L13 and R2 to R13 is connected to the recess 65B at the other end of the outer mold by the spigot, each of the above molds The cylinder 51 is operated to connect to the connecting tapered hole 69 with the connecting pin 67.

In this state, the outside cylinder 53R,
By operating 53L to move the rod members 57R, 57L outward, the left and right reference dies L13, R13 at the outermost positions are moved outward, so that the left and right reference dies L2- L12 and R2-R12 are also guided and moved in the same direction by the guide rail 59. Therefore, a gap is created between the left and right reference dies L1 and R1 and the left and right reference dies L2 and R2, and the dies unnecessary for the bending process are retracted. At this time, the mold mounted on the work for fixing the work, that is, the center mold C, the left and right hollowing mold L
Since 0, R0 and the left and right reference molds L1, R1 are supported by the preload of the sliding member 63, it is not necessary to provide a separate fixing device, and the cylinder 51 of the fixing means is operated to cancel the operation. It is in a clamped state.

Therefore, according to the length of the work, it is only necessary to eliminate the step of moving all the divided dies outward once, and to move only the divided dies unnecessary for the bending process outward. Further, it is possible to shorten the width-shifting time of the split dies and improve the efficiency of the width-shifting work of the split dies.

The present invention is not limited to the above-described embodiments, but can be implemented in other modes by making appropriate changes. In this example, the width of the split mold for fixing the work of the ironing and bending machine was described as an example, but it can be applied to change the width of the split mold in other bending machines such as a press brake. is there.

[0034]

As will be understood from the above description of the embodiments, according to the present invention, according to the length of the work,
Since it is only necessary to eliminate the step of moving all the split dies to the outside and to move only the split dies unnecessary for the bending process to the outside, it is possible to shorten the time required for the split dies to be moved. Therefore, it is possible to improve the efficiency of the width-shifting work of the split molds.

[Brief description of drawings]

FIG. 1 is a front view of a main part of the present invention, which is a view taken along the arrow I in FIG.

FIG. 2 is an enlarged detailed view of a II arrow portion in FIG.

FIG. 3 is a plan view of FIG.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a side view of a folding machine according to an embodiment of the present invention.

[Explanation of symbols]

 1 Bending Machine 19 Bottom Die 23 Top Die 49 Mold Support Beam 51 Cylinder (Fixing Means) 53R, 53L Out-Folding Cylinder 57R, 57L Rod Member 59 Guide Rail 63 Sliding Member 65 Rod Member 65A Convex (Engagement Part) 65B concave part (engaged part) 67 fixing means 69 cylinder 71 connecting pin (fixing part) 73 taper hole for connection (fixed part)

Claims (5)

[Claims] 1. A rod member mounted on an outside cylinder is fixed to the outermost divided mold located at the outermost side of a plurality of movable divided molds provided in the longitudinal direction of a workpiece to be processed. When bending a work, the unnecessary split mold outside the length of the selected work is continuously connected to the outermost split mold as appropriate, and the rod member is moved outward by the operation of the cylinder for outward shifting. A method for aligning the split molds in a bending machine, wherein the unnecessary split molds are integrally moved outside the bending process by moving the molds to the outside. 2. A plurality of movable split dies provided in the longitudinal direction of a work to be machined, and fixed to the outermost split dies located at the outermost of the plurality of split dies, A rod member mounted on the shifting cylinder, an engaging portion provided at one end of each split die of the plurality of split dies, and an engaged portion provided at the other end of each split die, An engaging portion at one end of an arbitrary split die, and a fixing means provided on each split die for engaging and disengaging with an engaged portion at the other end of the adjacent split die. Width-shifting device for split dies in a folding machine. 3. The width aligning device for a split mold in a bending machine according to claim 2, wherein the engaging portion is a convex portion and the engaged portion is a concave portion. 4. The fold according to claim 2, wherein the fixing means is composed of a fixed portion provided on each split mold and a fixing portion that can be engaged with and disengaged from the fixed portion. Alignment device for split molds in bending machines. 5. The split mold width aligning device for a bending machine according to claim 4, wherein the fixing portion is composed of a connecting pin mounted on a cylinder.