JPS6261730A - Selection method for metal die of folding machine - Google Patents

Abstract

PURPOSE:To change the maximum number of metal dies with the minimum number of rack steps and to increase the work efficiency by enabling the necessary change of metal dies from the metal die storage part provided in multisteps and double lines. CONSTITUTION:The folding machine is formed by a folding device 1, metal die changing device 3 and the metal die storing part in multistep and double line to store the metal die. And in case of taking out and storing the metal die (a2) of the storage pat 95a of No.1 ascending and descending rack 87 and the metal die C of the storage part 97C of No.2 ascending and descending rack 89, the storage part 95a, 97A of the rack 87, 89 is first descended upto the X-X line of the metal die changing position, the metal die (a2) is supported from a metal die position I2 by the metal die changing device and moved to the rack 89 side together with the metal die (a3), (a4) and the metal die (a4) is moved to the position II3. The metal die (a2) is then moved to the position I4 of the rack 87 by ascending the storage part Y for metal die passing of the rack 87 upto the X-X line. The storage part 97C of the rack 89 is ascended then upto the X-X line and the metal die (a2) is transferred out to the folding machine together with the metal die C at the position II4. And the storage of the said metal die is performed with the reverse operation.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a method for selecting a mold for bending.

[Technical background of the invention and its problems] Conventionally, for example, the top die of a bending machine by rotating a pend beam is attached to the lower part of a top die holder that is provided to be movable up and down, and In order to accommodate various width dimensions, it is generally constructed of split molds that can be freely assembled to any length.

That is, the top die is formed by appropriately combining a plurality of divided pieces divided into arbitrary lengths.

The top die is replaced in accordance with the width dimension of the plate material, for example, by hand, or by using a mold changing robot or the like to attach and detach each divided piece to and from the top die holder.

Therefore, W of the top die with respect to the top die holder
At present, it takes a lot of time to replace the membrane, and there are problems with improving work efficiency.

[Purpose of the invention] The present invention has been devised in view of the above-mentioned problems.

Therefore, it is an object of the present invention to provide a mold exchanger for a bending machine that enables the replacement of necessary molds from a mold storage section provided in multiple rows in a mold exchange device equipped with a plurality of mold gripping positions. The purpose is to provide a selection method.

[Means for Solving the Problems] In order to achieve the object, the present invention has the following configuration.

That is, the method for selecting a mold for a bending machine according to the present invention is as follows:
A bending device in which a plate placed on a bottom die is pressed and fixed by a top die attached to a top die holder that can be raised and lowered, and the edge of the plate is bent by a pend beam that is supported in a vertically movable manner, and this device In a bending machine equipped with a mold changing system, the mold changing device equipped with multiple mold gripping positions allows the necessary mold to be replaced from the mold storage compartment provided in multiple rows. This method is based on the method for selecting a mold for a bending machine.

[Example] Hereinafter, an example of the present invention will be specifically described with reference to the drawings.

First, the front view and each sectional view of the folding machine shown in FIGS. 10 to 14 will be absolutely explained.

Since this folding machine has a bilaterally symmetrical shape in FIG. 11, the explanation will be mainly given on the front side (the left side in FIG. 11).

The bending machine is composed of a bending device main body 1, a mold changing device 3, and a multi-stage, double-row mold storage section 5 for storing molds.

The bending device main body 1 fixes the plate material W in a substantially horizontal position with bottom dies F, 7R and top dies 9F, 9R,
Bend the free edge of the plate material W protruding from both dies to the bend beam 1
Two bending machines of the type that bend by raising and lowering the bend beams 1F and 11R are arranged symmetrically with the bend beams 11F and IIR on the center side.

More specifically, the frame 13 constituting the main body includes a base 15, left and right side frames 17.19 vertically erected from both sides of the base 15, and both left and right ends supported by the upper part of the side frames 17.19. The upper beam members 21F, 21R, etc. are separated from each other.

A top die holder 23 is disposed above the bottom die F17R so as to be movable up and down by an elevating cylinder 25, and at the front and rear of the lower surface of the top die holder 23 there is provided a top die holder 23 for pressing and fixing the plate material W to the bottom die F and 7H. Top dies 9F19R are each removably attached.

These top dies 9F and 9R are used by combining a plurality of divided pieces of appropriate dimensions into an appropriate length according to the width dimension of the plate material W.

A plurality of pressing cylinders 27F and 27R are used to press the top die holder 23 when the plate material W is pressed and fixed by the top dies 9F and 9R.
It is installed on 1F and 21H.

Incidentally, bend beams 11F and 11R are provided inside the bottom diameters F and 7R so as to be movable up and down in order to bend the edge portions of the press-fixed plate material W upward. These bend beams IIF and 11R have eccentric shafts 29F and 29R.
The eccentric shafts 29F and 29R are supported by the bending cylinders 31F and 31R, and the eccentric shafts 29F and 29R rotate to perform the bending operation. During this bending work, the pend beam 11F
Horizontal guide members 35F, 35 supported by guide portion 33 that directs 111R toward top die 9F19R.
R is attached to the lower surface of the top die holder 23 so as to be vertically adjustable.

The above configuration is the absolute configuration of the bending device main body.

Next, the mold changing device 3 includes guide rails 37F and 3 extending in the left and right directions on the front and rear surfaces of the top die holder 23, respectively.
7R is attached, and the mold changing device 3 is movably supported on this guide rail 37.

Further, a belt 41 such as a timing belt is wound around pulleys 39 provided near both the left and right measuring portions of the top die holder 23, and the mold changing device is connected to this belt 41, and the pulley 39 is moved by a motor (not shown) or the like. The rotating mold changing device is moved and the top dies 9F and 9R can be replaced.

This mold changing device 3 will be described in detail with reference to FIGS. 12 and 13. A movable block 43, which is movable in the left and right direction along the guide rail 37, is It is connected to the belt 41.

The movable block 43 is formed with a nose portion 49 that can penetrate through a through hole 47 formed in the side frame 19 and protrude toward the mold storage section 5 side. A guide rail 51 is formed parallel to the . A slide member 55, which supports a mini-cylinder 53 at its tip, is movably supported on the guide rail 51.

This slide member 55 is connected to a piston rod 59 of a retraction cylinder 57 supported by the moving block 43.

Therefore, by appropriately operating the retraction cylinder 57, the slide member 55 reciprocates with respect to the moving block 43.

The mini-cylinder 53 includes a piston rod 63 that can be freely engaged with and disengaged from an engagement hole 61 formed on the front side of the top dies 9F and 9R. On the other hand, the grooves 65 provided on the front side surfaces of the totsubu dies 9F and 9R are supported by a support member 67 hanging down from the top die holder 23. It is supported via a bomb 73 such as the following.

The rear side is clamped in contact with a side slope 79 by a clamp member 77 connected to a cylinder 75 provided on the top die holder 23.

In the above configuration, with the piston rod 63 of the mini cylinder 53 engaged with the engagement hole 61 of the top dies 9F, 9R, the top dies 9F, 9R are moved integrally by moving the moving block 43.

゛At this time, for example, although not shown in the drawings, by arranging a plurality of detectors such as limit switches during the movement of the moving block or at each mold gripping position of the mold storage section, which will be described later, the mold storage section It becomes possible to stop the mini cylinder 53 at a plurality of mold gripping positions.

The above configuration is a linear configuration of the mold changing device.

Next, the mold storage section 5 (see FIG. 10) is integrally provided on the side wall of the side frame 19, and the top die 9F, 9R
It consists of a double-row, multi-stage storage section that allows storage and removal of the top dies on the front and rear sides at the same time.

Its structure is such that a plurality of guide rails 83 and 85 are vertically attached to the front and rear surfaces of a support frame 81, respectively.
A first lifting rack 87 is supported on the guide rail 83 so as to be able to rise and fall freely, and a second lifting rack 87 is supported on the guide rail 85.
9 is supported.

Since the first lifting rack 87 and the second lifting rack 89 move up and down separately, the first lifting screw 91 and the second lifting screw 93 are rotatably supported and interlocked by a motor or the like. There is.

The first and second elevating racks 87 and 89 are equipped with a plurality of storage sections 95a to 95f and 97A to 97F, into which top dies of different sizes are carried by the mold changing device. Storing and transporting. FIG. 14 shows a state in which the top die is stored in the storage portions 95a to 95f and 97A to 97F. Although not shown, the top die 9F is placed in the top die holder 23 described above.
.

The support bar 9 has a completely circular configuration with the method of supporting 9R.
The top dies 9F and 9R are supported by the top dies 9F and 9R via a plurality of bolts and bullets such as coil springs to prevent the top dies from moving during rack movement.

The above configuration is a linear configuration of the bending machine according to the present embodiment.Next, regarding an embodiment of the mold selection method according to the present invention, the operation mode shown in FIGS. 1 to 9 will be explained. This will be explained in detail with reference to the drawings.

FIG. 1 shows the storage sections 95a to 95 of the first lifting rack 87 of the mold storage section 5 and the storage section 97 of the second lifting rack 89.
A to 97F show a state in which a predetermined amount of molds are stored, and the line X--X in the figure shows the position of the rack when replacing the molds, and 950. The storage section is left empty and is designated by the symbol Y to allow the mold to be carried out from the second elevating rack 89. In addition, the first lifting rack 87 has four mold gripping positions from 11 to I4, and the second lifting rack 89 has four positions.
Four positions 1 to 4 are set as mold gripping positions.

As an example, from the storage state as described above, there is a selection of taking out and storing the mold a2 stored in the storage part 95a of the first lifting rack 87 and the mold C stored in the storage part 97C of the second lifting rack 89. The method will be explained step by step with reference to FIGS. 2 to 9.

FIG. 2 shows that the housing parts 95a and 97A of the first lifting rack 87 and the second lifting rack 89 are lowered from the state shown in FIG. Support the mold a2 from the mold gripping position 2 and move it together with the molds a3 and a4 to the second lifting rack side.
Grab 4 and move it to position ■3.

FIG. 3 shows that while the mold a2 is supported by the mold changing device, the housing portion Y for passing through the mold of the first lifting rack 87 is raised to the X-X line position, and the mold a2 is moved to the first lifting rack. Move the mold grip to position 4.

FIG. 4 shows that the support for the mold a2 is released, the storage section 97C of the second elevating rack 89 is raised to the X-X line position, and the mold C in the mold gripping position 4 is supported by the mold changing device. do.

FIG. 5 shows a state in which the mold a2 and the mold C are carried out to the bending machine side. This completes the unloading of mold a2 and mold C.

FIGS. 6 to 9 show the state in which molds a2 and molds C are stored in the positions where they were initially stored in each elevating rack.

FIG. 6 shows that the mold a2 is supported from the bending machine side by the mold changing device and is moved together with the mold C into the storage section 97 of the second elevating rack 89.
Move the mold C to the mold gripping position (G) to the position 4.

FIG. 7 shows the first lifting rack 87 while supporting the mold a2.
The housing portion 95a is lowered to the X-X line position, the mold a2 is moved to the mold gripping position 4, and the support is released.

FIG. 8 shows the storage section 97A of the second lifting rack 89
The mold a4 is supported by the mold changing device and moved to the storage section 95a of the first lifting rack 87, and when the mold a2 has moved to the mold gripping position (2). Stop migration.

Figure 9 shows that the mold changing device moves mold a4 to mold gripping position work 4 and mold a3 to work position 3, respectively, and finishes storing the molds, and all molds are stored in their old positions. be done.

This completes the operation, and it becomes possible to store and take out a large number of molds even in such a small storage space.

It goes without saying that the present invention is not limited to the embodiments described above, and that various changes can be made without departing from the gist of the present invention.

[Effects of the Invention] As described above, the present invention makes it possible to exchange necessary molds from the mold storage sections provided in multiple rows in a mold changing device equipped with a plurality of mold gripping positions. Depending on the mold selection method,
The time required for replacing molds can be shortened, and the maximum number of molds can be replaced with the minimum number of racks, thereby improving work efficiency.

[Brief explanation of drawings]

FIGS. 1 to 9 are explanatory diagrams of the operating state showing an embodiment of the mold selection method according to the present invention, FIGS. 10 to 14 show a bending processing apparatus in which the present invention is implemented, and FIG. Front view,
FIG. 11 is a sectional view taken along the line XI-XI in FIG.
Figure 3 is in Figure 12. (Explanation of symbols representing main parts of the drawings) 1...Bending device main body 3...Mold changing device 5...Mold storage section 7F, 7R...Bottom die 9F, 9R... Top die 11F, 11R... Pend beam 111 Figure 1. I□Is 14 11Ihll Island■◆Figure 2Figure 3Figure 4Figure 1, 11 11 14 n+ ICollectionI13114Figure 5It lc IJ 14 Ill IILJIJ
14 Figure 7 1, IL 13141. IILlla 14th 10th
Leap figure 11 figure 12 figure 1 figure 13 figure 14

Claims (1)

[Claims] A bending device that presses and fixes a plate placed on a bottom die with a top die attached to a top die holder that can move up and down, and bends the edge of the plate with a bend beam that is supported so that it can move up and down. In a bending machine equipped with a mold changing system for the device, the mold changing device is equipped with multiple mold gripping positions, and the required mold can be replaced from the mold storage compartment provided in multiple rows. A method for selecting a mold for a bending machine, characterized in that: