Rapid light curtain adjusting device for bending machine

Abstract

The utility model belongs to the technical field of bending machines, and particularly relates to a light curtain quick adjusting device for a bending machine, which comprises a quick clamp, a rotating body, a connecting block, a magnet mounting block, a guide rail mounting plate and a magnet, a connecting plate is mounted below the front surface of the guide rail mounting plate, and the connecting plate is connected with a light curtain emitter through a bolt; a linear guide rail is mounted on the back surface of the guide rail mounting plate; a sliding block is slidably connected to the linear guide rail; the rotating body is composed of a first rotating body and a second rotating body, the magnet is fixed on the magnet mounting block, and the connecting block is fixed on the first rotating body; connecting blocks are installed on the upper side and the lower side of the second rotating body respectively, and the quick clamps are installed on the connecting blocks respectively and matched with the linear guide rails. A rotating structure is adopted for avoiding of the light curtain device, resetting of the light curtain is achieved in a magnetic attraction mode, the time for re-focusing of workers can be greatly saved, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bending machines, and particularly relates to a light curtain quick adjustment device for a bending machine. Background Art

[0002] Bending machines are usually equipped with safety light curtain devices. The transmitting end and receiving end of the light curtain are respectively installed at both ends of the movable beam to ensure the safety of operators during the bending process. At present, there are two types of light curtain devices on the market. One is an automatically adjustable type, which has a drive system inside and automatically adjusts its position up and down within a specified stroke range. The other is non-adjustable by itself and usually requires the assistance of a mechanical structure to achieve the adjustment of the up and down position.

[0003] In actual bending production, customers usually encounter the following two situations. Situation 1: For deep U-shaped workpieces with a full-length bend, the workpiece needs to be taken out from the side of the machine tool after bending. Situation 2: According to the structural characteristics of different bending parts, upper dies of different heights usually need to be replaced. Customers will put forward different requirements for the adjustment of the light curtain position and the avoidance form of the light curtain device. On the one hand, the requirement is that the light curtain device has an avoidance structure. When installing or removing the die from the side or taking out the workpiece from the side, it is necessary to make room for the operation. On the other hand, the up and down adjustment and fixed locking of the light curtain are required to be fast, convenient, stable and reliable.

[0004] In the existing light curtain device structure, the solution for the avoidance structure is to lift the light curtain device to the upper limit position and fix and lock it with a knob or a setscrew to make room for taking out the workpiece. After the bent workpiece is taken out, it is necessary to loosen the knob or the setscrew again and re-align the light curtain devices on both sides to the initial position to reset the light curtain device and continue to complete the next workpiece bending. The solution for adjusting the height of the light curtain is to use a chute form or a linear guide rail to achieve the adjustment in the height direction and fix it with a knob or a fixing screw. The light curtain device structure of the above implementation schemes is relatively complex, with poor stability, cumbersome operation, and extremely low processing efficiency of the operators. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a light curtain quick adjustment device for a bending machine to solve the problems existing in the background art.

[0006] To achieve the above object, the present utility model provides the following technical solution: A light curtain quick adjustment device for a bending machine, comprising a quick clamp, a rotating body, a connecting block, a magnet mounting block, a guide rail mounting plate and a magnet. A connecting plate is installed below the front surface of the guide rail mounting plate, and the connecting plate is bolted to the light curtain emitter; A linear guide rail is installed on the back surface of the guide rail mounting plate, and a slider is slidably connected to the linear guide rail; The rotating body is composed of a first rotating body and a second rotating body, and the first rotating body and the second rotating body are connected together by a rotating shaft. The second rotating body is fixedly connected to the slider. A magnet mounting block is fixed to the side of the first rotating body, and the magnet is fixed on the magnet mounting block. The magnet is adsorbed and matched with the side of the second rotating body. The connecting block is fixed to the first rotating body; Connecting blocks are respectively installed on the upper and lower sides of the second rotating body, and quick clamps are respectively installed on the connecting blocks. The quick clamps cooperate with the linear guide rail. The avoidance of the light curtain device adopts a rotating structure, and the reset of the light curtain is realized by a magnetic adsorption method. The operator only needs to apply a very small force to rotate the light curtain device backward by a certain angle to vacate the operating space on the side, which is convenient for taking out the bent workpiece or installing the upper die. When the light curtain needs to be reset, pull the light curtain device to realize the reset by magnetic adsorption. The transmitting end and the receiving end do not need to be re-aligned. The magnetic force of the magnet can ensure the stability of the light curtain device during the up and down movement with the moving beam, and the machine tool can be used normally. For the adjustment of the up and down height direction of the light curtain, the form of combining a linear guide rail and a quick clamp is used, which can facilitate the operator to quickly and accurately adjust the height of the light curtain to complete the alignment operation. The two clamps are symmetrically arranged on the upper and lower sides of the slider, and on the acting guide surface of the clamp, the force is evenly distributed, and the position of the light curtain will not shift. The overall structure of this light curtain adjustment device is stable and the operation is simple, which can greatly improve the working efficiency of workers.

[0007] Preferably, an arc-shaped groove is provided at the bottom of the first rotating body, and a limit screw passes through the second rotating body and is inserted into the arc-shaped groove.

[0008] Preferably, limit posts are respectively fixed at the upper and lower ends of the back surface of the guide rail mounting plate.

[0009] Preferably, a scale is installed on the side of the guide rail mounting plate, and a pointer is installed on the second rotating body.

[0010] Preferably, a drag chain support is installed on the second rotating body. One end of the drag chain is connected to the drag chain support, and the other end of the drag chain is connected to the connecting plate.

[0011] Preferably, an arc-shaped groove is provided below the guide rail mounting plate and is connected to the connecting plate by fixing screws and adjusting screws. There are 4 screw holes around the connecting plate, and 4 adjusting jackscrews are installed.

[0012] The beneficial effects of the present utility model are as follows: The avoidance of the light curtain device adopts a rotating structure, and the reset of the light curtain adopts a magnetic attraction method, which can greatly save the time for workers to realign the light, improving the processing efficiency; A linear guide rail is installed on the back of the light curtain mounting plate, and an indicating scale is installed on the side, which can facilitate the operator to quickly and accurately adjust the height of the light curtain to complete the light alignment operation; For the adjustment of the light curtain in the up and down height direction, a combination of a linear guide rail and a quick clamp is used, which can facilitate the operator to quickly and accurately adjust the height of the light curtain to complete the light alignment operation. The two clamps are symmetrically arranged on the upper and lower sides of the slider, and on the acting guide surface of the clamps, the force is evenly distributed, and the position of the light curtain will not shift. The overall structure of this light curtain adjustment device is stable and the operation is simple, which can greatly improve the working efficiency of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a perspective view of the present utility model;

[0014] Figure 2 is Figure 1 a partial enlarged view in

[0015] Figure 3 is a perspective view of the present utility model in another direction;

[0016] Figure 4 is a rear view of the present utility model;

[0017] Figure 5 is a top view of the present utility model;

[0018] Figure 6 is a perspective view of the rotating body in the present utility model;

[0019] Figure 7 is Figure 6 a partial enlarged view in

[0020] Figure 8 is an application schematic diagram of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will describe in detail the specific embodiments of the present utility model in conjunction with the accompanying drawings and preferred embodiments.

[0022] As Figure 1-7 shown, a light curtain quick adjustment device for a bending machine includes a quick clamp 5, a rotating body, a connecting block 7, a magnet mounting block 8, a drag chain 9, a connecting plate 10, a guide rail mounting plate 11, and a magnet 12;

[0023] The connecting block 7 is bolted to the back of the movable beam 4. The rotating body 6 includes a first rotating body 6-1, a second rotating body 6-3 and a rotating shaft 6-2, and is connected to the connecting block 7. Two rows of long slot holes are provided on the first rotating body 6-1; A connecting plate 10 is installed below the front of the guide rail mounting plate 11, and the connecting plate 10 is bolted to the light curtain emitter; A linear guide rail 16, a limit post 13 and a drag chain connecting plate 17 are installed on the back of the guide rail mounting plate 11, and a scale 15 is installed on the side. The slider is fixedly connected to the rotating body 6; Two upper and lower connecting blocks 18 are installed on the rotating body 6, and quick clamps 5 are respectively installed on the connecting blocks 18. When the clamps 5 are closed, symmetrical pressure can be applied to the guide rail surface.

[0024] An arc-shaped groove structure is provided at the bottom of the first rotating body 6-1. One end of the limit screw 23 passes through the second rotating body 6-3 and is inserted into the arc-shaped groove, and the other end is matched with the locking nut 32 to limit the rotation angle of the rotating body 6. Both ends (fixed end and mobile end) of the drag chain 9 are respectively connected to the drag chain bracket 19 and the drag chain plate 17. The drag chain bracket 19 is fixedly connected to the rotating body 6, and the drag chain plate 17 is fixedly connected to the guide rail mounting plate 11; The magnet 12 is installed on the magnet mounting block 8, and the magnet mounting block 8 is fixedly connected to the first rotating body 6-1. During rotation, the magnet mounting block 8 and the first rotating body 6-1 remain stationary, and the second rotating body 6-3 will separate from the magnet 12.

[0025] An arc-shaped groove is provided below the guide rail mounting plate 11 and is connected to the connecting plate 10 through the fixing screw 20 and the adjusting screw 21. The back of the connecting plate 10 is connected to the light curtain emitting end. When fine-tuning the light curtain, loosen the fixing screw 20 and the adjusting screw 21, and the light curtain can rotate a certain angle around the fixing screw 20 to finely adjust the position of the light curtain in the vertical direction. Four screw holes are provided around to install four adjusting set screws 22 to achieve fine adjustment of the light curtain in the front and back directions. The linear guide rail 16 is installed on the back of the guide rail mounting plate 11 and is located at the center of the guide rail mounting plate. The material is aluminum alloy 6061, and several round holes are provided on it to reduce weight and facilitate the operator to adjust the position of the light curtain.

[0026] Working principle:

[0027] When the upper die is installed on the side or the bent workpiece needs to be taken out from the side, the light curtain device is pushed backward. After rotating 60 degrees, it reaches the maximum limit position. After installing the upper die or taking out the workpiece, then pull the light curtain device until the magnet 12 is completely attracted to the rotating body 6, and the light curtain returns to the origin position.

[0028] When replacing the upper die with different heights and quickly adjusting the height of the light curtain, the operator needs to hold the bottom of the light curtain device by hand, loosen the handles of the upper and lower clamps 5, and adjust according to the indicated position of the scale 15 installed on the side. The light rays of the light curtain transmitting end and receiving end should be aligned with the tip of the upper die. Ensure that the light curtains on both sides are adjusted to the same position. After successful alignment, then tighten the handles of the upper and lower clamps 5 to fix this current position, and the position adjustment of the light curtain can be completed.

[0029] As Figure 8 As described above, the transmitting end 1 and the receiving end 3 of the light curtain are symmetrically installed on both sides of the movable beam 4. Before the machine tool performs bending work, the transmitting end 1 and the receiving end 3 need to perform alignment operations. The light rays of the transmitting end 1 and the receiving end should be aligned with the tip position of the upper die 2. During the normal bending process of the bending machine, the light curtain device moves up and down together with the movable beam 4.

[0030] It should be noted that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as within the protection scope of the present utility model.

Claims

1. A light curtain quick adjustment device for a bending machine, characterized in that: It includes a quick clamp, a rotating body, a connecting block, a magnet mounting block, a guide rail mounting plate and a magnet, a connecting plate is installed below the front side of the guide rail mounting plate, and the connecting plate is connected to the light curtain transmitter by bolts; a linear guide is installed on the back side of the guide rail mounting plate, and a slider is slidably connected to the linear guide; the rotating body is composed of a first rotating body and a second rotating body, the first rotating body and the second rotating body are connected together by a rotating shaft, the second rotating body is fixedly connected to the slider, the side of the first rotating body is fixed with the magnet mounting block, the magnet is fixed on the magnet mounting block, the magnet is adsorbed and matched with the side of the second rotating body, and the connecting block is fixed on the first rotating body; connecting blocks are respectively installed on the upper and lower sides of the second rotating body, the quick clamp is respectively installed on the connecting blocks, and the quick clamp matches with the linear guide.

2. The light curtain quick adjustment device for a bending machine according to claim 1, characterized in that: An arc groove is arranged at the bottom of the first rotating body, and the limit screw passes through the second rotating body and is inserted into the arc groove.

3. The light curtain quick adjustment device for a bending machine according to claim 1, characterized in that: Limiting columns are respectively fixed at the upper and lower ends of the back side of the guide rail mounting plate.

4. The light curtain quick adjustment device for a bending machine according to claim 1, characterized in that: A ruler is installed on the side of the guide rail mounting plate, and a pointer is installed on the second rotating body.

5. The light curtain quick adjustment device for a bending machine according to claim 1, characterized in that: A drag chain bracket is installed on the second rotating body. The drag chain bracket is connected to one end of the drag chain, and the other end of the drag chain is connected to the connecting plate.

6. The light curtain quick adjustment device for a bending machine according to claim 1, characterized in that: An arc groove is arranged below the guide rail mounting plate, which is connected to the connecting plate through fixing screws and adjusting screws. Four screw holes are arranged around the connecting plate, and four adjusting top screws are installed.

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