JPH0648917U - Automatic plate bending machine - Google Patents

Abstract

(57) [Abstract] [Purpose] A plate capable of automatic plate bending without using a handling robot, requiring no reversal of the material to be turned over, and supporting even a long material with almost no bending. Provide a bending machine. [Structure] In a plate bending machine in which upper and lower dies are provided with female and male dies, respectively, and the upper and lower dies are used by exchanging paired male and female dies. , Near the front and rear surfaces of the mold positioned at the processing position, front and rear support tables which are close to the mold and can be vertically swung about an axis along the mold, and A back gauge was provided on the extension line of the support table.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 INDUSTRIAL APPLICABILITY The present invention is a plate bending machine such as a press brake that supports, for example, a long plate-shaped processing material from its entire lower surface, and can perform plate bending including reverse bending without turning over the processing material. The present invention relates to an automatic plate bending machine.

[0002]

[Prior art]

 There are various shapes of work pieces for plate bending, but for example, when bending a heavy work piece or a long narrow work piece, it is still necessary to manually support the work pieces (handling). ) Is needed.

Handling of the processed material may be easy depending on the bent shape of the processed material, or may be complicated because it needs to be repeatedly held. Conventionally, an automatic plate bending machine has been proposed that allows a machine such as a robot to perform such handling.

However, in addition to the drawback that an automatic plate bending machine equipped with a processing material handling robot becomes an expensive apparatus itself, the depth amount (depth) of the processing material that can be applied to invert the processing material. There is a problem in that it cannot be used for off-line processing by manual processing, or is difficult to use because it has a limited width) and is equipped with an accessory installation such as a handling robot.

[0005]

[Problems to be solved by the device]

 The problem to be solved by the present invention is that it is possible to perform automatic plate bending without using a handling robot, requiring no turning over of the work material and supporting even a long material with almost no bending. It is to provide a plate bending machine.

[0006]

Means for Solving the Problems The structure of the present invention made for the purpose of solving the above problems is such that an upper die and a lower die are provided with female and male dies, respectively. In a plate bending machine designed to be used by exchanging a pair of male and female molds in a mold, the mold positioned near the front and rear sides of the mold located near the processing position and close to the mold and It is characterized in that front and rear support tables are provided so as to swing up and down with respect to an axis along the back table, and a back gauge is provided on an extension line of the support table.

[0007]

【Example】

 Next, an example of implementation of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing an appearance of an example of the plate bending machine of the present invention, FIG. 2 is a front view of the plate bending machine of FIG. 1, and FIG. 3 is a main part of the plate bending machine of FIGS. Fig. 4 is a plan view, Fig. 4 is a side view of the processed material bent by the plate bending machine of the present invention, and Figs. 5 to 8 are the first processing when the processed material of Fig. 4 is processed by the plate bending machine of the present invention. A side view showing steps (a) to 10th machining step (j) in the order of steps, and Figs. 9 to 11 show sixth machining step (f), eighth machining step (h), and tenth machining step (j), respectively. FIG. 4B is an enlarged side view showing a processed state in FIG.

1 to 3, 1 is a frame of a plate bending machine, and 2A and 3A are upper and lower dies provided above and below the front side of the front of the frame 1. is there. Here, the upper die 2 is a processing upper die 2A held by a hydraulic clamp 2c at the lower end of a ram 2b connected to the left and right drive cylinders 2a, 2a, and an upper die on the front side upper part of the die 2A. It is formed by a standby upper mold 2B held by the mold exchanging mechanism 4. Further, for convenience of explanation, it is assumed that the upper die 2A is a female die and the upper die 2B is a male die.

On the other hand, the lower die includes a processed lower die 3A held by a hydraulic clamp 3b on a die stand 3a provided on the table 1a of the frame 1, and the lower die. It is formed by a standby lower mold 3B held by the lower mold exchanging mechanism 5 at the lower part of the front side of the mold 3A. Here, the lower mold 3A is a male mold corresponding to the upper mold 2A, and the lower mold 3B is a female mold.

Here, as shown in FIGS. 12 and 13, the mold exchanging mechanisms 4 and 5 include mold supporting means 4a and 5a supporting the respective processing molds and standby dies 2B and 3B, and the supporting means 4a and 5a. Formed from moving means 4b, 4c for moving the means 4a, 5a back and forth and up and down with respect to the processing position, and also 5b, 5c, the respective die changing mechanisms 4, 5 include a ram 2b and a table 1a. It is arranged on both front and back sides. Therefore, when the current processing dies 2A and 3A are replaced with the waiting upper dies 2B and lower dies 3B to form standby dies, install them on the rear surface side of the ram 2b and the table 1a. The mold changing mechanisms 4 and 5 thus arranged hold the molds 2A and 3A and position them at the standby position.

Now, an example of an operation procedure for removing the upper mold 2A at the processing position and replacing it with the upper mold 2B on standby will be described. In FIG. 12, first, the hydraulic clamp 2c is opened, the moving means 4c in the vertical direction is lowered to its lower end, and then the moving means 4b in the front-rear direction is advanced to its forward end, and then the moving means 4c is moved. The upper die 2A is removed and the positioning to the standby position is completed by raising it to the rising end again. On the other hand, in the upper mold 2B, the upper and lower moving means 4c are lowered to the lower end thereof, the front-rear moving means 4b is moved to the rear end to the retracted end, and the moving means 4c is raised to the clamp 2c again to clamp the mold 2B. By positioning this on 2c and closing this clamp 2c, the dies are replaced and positioned at the processing position. The procedure for this mold replacement is the same for the lower molds 3A and 3B, so the description of the lower molds is omitted.

In FIG. 13, reference numerals 6 and 7 denote front support tables for supporting processing materials provided on the front and rear sides of the processing positions by the molds 2A, 3A or 2B, 3B, respectively. Bull and rear support table. These tables 6 and 7 are swiveled by supporting columns 8a and 8b which are erected on the left and right outside of the processing position in the frame 1 by axes 8c and 8d parallel to the lengthwise direction of the molds 2A and 3A. The roller members 6b and 7b installed on the table frames 6a and 7a, which are generally gate-shaped or mouth-shaped as viewed from the plane supported as much as possible, and the frame members 6b and 7b, are used to connect the frames. -Conveyor by belts 6c, 7c wound around frames 6a, 7a, and drive sources 6d, 7d by cylinders for swinging the table frames 8a, 8b around shafts 8c, 8d. Has been formed. Here, the conveyor can move up and down on its frames 6a and 7a, and can convey the work material in the front-back direction of the frame 1 at the positions where it moves up and down.

Therefore, in the supporting tables 6 and 7 for the above-mentioned processed materials, the conveyors (roller members 6b and 7b and belts 6c and 7c) can be moved up and down on the frames 6a and 7a, and the supporting columns The support shafts 8c and 8d of 8a and 8b can be swung upward and downward by the action of the drive sources 6d and 7d by a cylinder or the like that supports the side away from the processing position (the mold 2A and 3A side). Is. As a result, the conveyor, which is the main body of the support tables 6 and 7, can be moved or positioned at appropriate vertical positions and swing angles to support the processed material.

Reference numeral 9 denotes a known back gauge provided on the rear side frame 1b of the frame 1, which can be moved up and down and moved forward and backward with respect to the processing position of the frame 1 by the molds 2A and 3A. The function is added to support the processed material from the bottom surface and to position the processing position set on the processed material at the processing position by the molds 2A and 3A.

An example of the plate bending machine of the present invention is configured as described above, and an operation example thereof will be described below with reference to FIGS. 4, 5 to 8 and 9 to 11. When a bending work as shown in FIG. 4 is applied to the work W of one plate by the plate bending machine of the present invention, the process proceeds in the order of (a) to (j) of FIGS.

That is, the bending w1 in the first step is performed by the male upper die (punch) 2B and the female lower die (die) 3B at the end of the processed material W. At this time, the front support table 6 is swung up along the workpiece W lifted by bending. Further, the work material W before bending is placed on the table 6 before the swiveling and rising, and the position of the bending w1 is determined by the positioning of the table 6 by the ascending / descending and advancing / retreating operations. Position the machining position on the 3B side (see Fig. 5 (a)).

Since the bending w2 in the second step is reverse bending, the former dies 2B and 3B are replaced with a pair of waiting dies 2A and 3A, and the conveyor (robot) in the table 6 is replaced. -The lapping member 6b and the belt 6c) are actuated to slightly retract the work material W and position it, thereby performing the bending w2 (see FIG. 5 (b)). At this time, the support table 6 supports the work material W which is bent while descending and turning to the side opposite to the first step from below.

In the third step, the table 6 is raised to move forward while supporting the processed material W so that the processed material W escapes from the mold part and the mold is replaced with a pair of molds 2B and 3B. . After that, the table 6 is again advanced and lowered to position the machining position of the workpiece W with respect to the dies 2B and 3B, and then bend w3 (see FIG. 5 (c)). In this bending, the front support table 6 supports the work material W which is swung up and bent from below.

In the fourth step, the table 6 supporting the processed material W is advanced to determine the position of the bending w4, and the bending w4 in the forward direction is performed by the molds 2B and 3B (FIG. 6). (See (d)). At this time, the front support table 6 supports the work material W which can be swung up and bent in the same manner as in the above process from below.

After the fourth step, the table 6 supporting the processed material W is once moved forward to be replaced with the molds 2A and 3A, and the bending w5 of the fifth step is performed by the molds 2A and 3A (FIG. 6). (See (e)). At this time, the front support table 6 supports the work material W which can be swung down and bent from below.

When the bending in the fifth step of FIG. 6 (e) is completed, the table 6 supporting the workpiece W is swung down in accordance with the rise of the upper die 2A to swivel up to perform working. Release the material W from the processing position. After that, the upper and lower molds are replaced with molds 2B and 3B, and the position of the bending w6 is adjusted to the processing position by the operation of the table 6. When the mold B2 is lowered and bending is started, the front support table 6 is swung up in synchronization with this to support the workpiece W during bending from below (see FIG. 6 (f)).

The above-described FIGS. 5 (a) to 6 (f) complete the left-side bending w1 to w6 in the processed material W of FIG. Bending w7 to w10 on the right side of the work material W changes the work material W, that is, moves the work material W to the left side of the drawing, but this movement is performed on both front and rear support tables 6,7. It can be automatically performed by rotating the conveyor 7c in the moving direction.

After the work material W is positioned at the position shown in FIG. 7 (g), the rear side of the work material W (the left side in FIG. 7) is swung up and down to move the rear support table 7 up and down. The processed material W in the bending w7 to w10 in the steps (g) to (j) is supported from the lower surface thereof. During this time, the support table 6 is placed in such a posture that it does not interfere with the back gauge 9 and the die change (see FIGS. 7 (g) to 8 (j) and 9 to 11).

[0024]

[Effect of device]

 By the above steps, one piece of the processed material W is bent as shown in FIG. 4 as an example. The plate bending machine of the present invention is used for the forward bending mold and the reverse bending mold. While the molds are equipped so that they can be automatically exchanged, a support table that supports the processed material from the lower surface is placed at the center of the machining position before and after the machining position by any one of the molds. Since it is installed so that it can be swung up and down, there is no need for turning over the plate material, rotating operation within a plane, and a mechanism therefor, which has the advantage of streamlining the operation and saving the space of the machine.

In addition, since a robot for handling the processed material is not installed in front of the machine, and the support table provided is folded and stored in the retracted position when unnecessary, manual processing equivalent to that of the conventional machine is performed. Off-line machining can be performed without any problems, and even in the case of this manual machining, it does not require reversing of the machined material or swiveling in a plane, so the time required for moving the machined material can be shortened It greatly contributes to shortening the time.

Furthermore, since the workpiece is supported almost entirely from the lower surface not only during positioning of the workpiece but also during processing, the workpiece does not bend due to its own weight, etc. There is also a side effect that it is easier to create.

[Brief description of drawings]

FIG. 1 is a side view showing the appearance of an example of a processing machine of the present invention.

FIG. 2 is a front view of the processing machine shown in FIG.

FIG. 3 is a plan view showing a main part of the processing machine shown in FIGS.

FIG. 4 is a side view of a processed material bent by the processing machine of the present invention.

5 is a side view showing the first processing step (a) to the third processing step (c) when processing the processing material of FIG. 4 with the processing machine of the present invention.

6 is a side view showing the fourth processing step (d) to the sixth processing step (f) when processing the processing material of FIG. 4 with the processing machine of the present invention in the order of steps.

FIG. 7 is a side view showing the seventh processing step (g) to the eighth processing step (h) when processing the processing material of FIG. 4 with the processing machine of the present invention.

FIG. 8 is a side view showing a ninth processing step (i) to a tenth processing step (j) when processing the processing material of FIG.

FIG. 9 is a side view showing a processing state in a sixth processing step.

FIG. 10 is a side view showing a processing state in an eighth processing step.

FIG. 11 is a side view showing a processing state in a tenth processing step.

FIG. 12 is a side view showing a main part of the mold exchanging mechanism.

FIG. 13 is a side view showing the main parts of the front and rear support tables.

[Explanation of symbols]

 1 Frame 2 Upper Mold 3 Lower Mold 4 Upper Mold Automatic Conversion Mechanism 5 Lower Mold Automatic Conversion Mechanism 6 Front Support Table 7 Rear Support Table 8a, 8b Support Column 9 Back Gage

Claims (3)

[Scope of utility model registration request] 1. A plate bending process in which an upper die and a lower die are provided with female and male dies, respectively, and the pair of male and female dies used in the upper and lower dies are exchanged for use. In the machine, near the front and rear surfaces of the mold positioned at the processing position, front and rear support tables are provided which are close to the mold and swing up and down with respect to an axis along the mold. ,
An automatic plate bending machine characterized in that a back gauge is provided on an extension of the support table. 2. The back gauge is provided so as to be supported and guided by a guide rail provided on the side frame.
Automatic plate bending machine. 3. The automatic plate bending machine according to claim 1 or 2, wherein the supporting table for the work material is provided so as to be supported by support columns arranged on the left and right outside of the frame of the bending machine.