A protective device for a bending machine

Abstract

This utility model discloses a protective device for a bending machine, including a pad plate installed on the upper worktable of the bending machine and a frame installed on the lower worktable of the bending machine. The pad plate is connected to multiple sets of guide rods, and the multiple sets of guide rods and the frame all extend laterally forward. The multiple sets of guide rods are sleeved with movable plates, and an electric control cylinder that can drive the movable plates to move is installed on the pad plate. A bearing plate is slidably fitted into the frame. A traction frame is connected to one side of the movable plate and extends downward to connect with the bearing plate. The movable plate is equipped with an unwinding shaft and a power motor. The unwinding shaft is wound with an isolation film, and a vertical strip is provided at the bottom end of the isolation film. The device blocks the sheet metal to be bent. During the bending process, the operator or other personnel can avoid the warped area of ​​the sheet metal, thus achieving a protective effect. The position where the operator is located is equipped with a detection component. The detection component forms a light curtain area, which can prevent the operator from reaching above the warped area of ​​the sheet metal and causing injury when the light curtain is blocked.

Description

Technical Field

[0001] This utility model relates to the field of bending machine technology, specifically a protective device for bending machines. Background Technology

[0002] A bending machine is a machine tool that uses a mold to cold bend and shape metal sheets. It applies a huge force to the sheet, causing it to undergo plastic deformation at a predetermined position, thereby obtaining a workpiece with a specific shape and angle.

[0003] Bending machines are often equipped with protective devices to protect operators. For example, a light curtain can be used at the front of the bending machine to form one or more invisible infrared light walls. If any part of the operator's hand or body enters the light curtain area and blocks the light, the machine will immediately stop the slide's downward movement or refuse to start, thus protecting the operator. However, when dealing with long plates that require manual support, the plate may warp during bending. Even if the operator does not enter the light curtain area at the front of the bending machine, injury may still occur. Therefore, this utility model proposes a protective device for bending machines that can solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a protective device for bending machines to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a protective device for a bending machine, comprising a pad plate disposed on the upper worktable of the bending machine and a frame disposed on the lower worktable of the bending machine, wherein the pad plate is connected to multiple sets of guide rods, and the multiple sets of guide rods and the frame extend laterally forward;

[0006] Multiple sets of guide rods are sleeved with movable plates, and an electrically controlled cylinder that can drive the movable plates to move is installed on the pad. The frame is slidably fitted with a bearing plate. A traction frame is connected to one side of the movable plate. The traction frame extends downward and connects to the bearing plate. A detection component is provided on the other side of the movable plate.

[0007] The movable plate is equipped with an unwinding shaft and a power motor. The unwinding shaft is wound with a release film. The power motor is used to drive the unwinding shaft to rotate and rewind or unwind the release film. A vertical strip is provided at the bottom end of the release film.

[0008] As a preferred technical solution, the length of the frame is less than the length of the multiple sets of guide rods.

[0009] As a preferred technical solution, the frame is provided with a stop block, and the bearing plate is connected to a limit block, and the stop block can contact the limit block to form a limit.

[0010] As a preferred technical solution, the upper surface of the bearing plate is provided with multiple sets of ball bearings.

[0011] As a preferred technical solution, the isolation membrane is a transparent membrane.

[0012] As a preferred technical solution, the vertical bar is connected to a hook that can be attached to the front end of the support plate.

[0013] As a preferred technical solution, the detection component includes two sets of upright plates connected to the support plate, one set of upright plates is equipped with a light emitter, and the other set of upright plates is equipped with a light receiver.

[0014] As a preferred technical solution, a control panel is installed on the traction frame, which is used to control the power motor.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] The device acts as a barrier to prevent bending of the sheet material. During the bending process, operators or other personnel can avoid the warped areas of the sheet material, thus providing protection. The operator's position is equipped with a detection component, which forms a light curtain area. When the light curtain is blocked, it can prevent the operator from reaching over the warped areas of the sheet material and getting injured. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure;

[0018] Figure 2 A schematic diagram of the unwinding shaft and the drive motor;

[0019] Figure 3 This is a schematic diagram of the component structure for testing;

[0020] In the diagram: 10. Bending machine; 20. Pad plate; 21. Guide rod; 22. Movable plate; 23. Electric control cylinder; 24. Detection component; 241. Vertical plate; 242. Light emitter; 243. Light receiver; 25. Unwinding shaft; 26. Power motor; 27. Isolation membrane; 28. Hook; 29. ​​Pulling frame; 30. Frame; 301. Stop block; 31. Bearing plate; 311. Ball bearing; 312. Limiting block. Detailed Implementation

[0021] The following is a detailed description of a protective device for a bending machine according to an embodiment of the present disclosure, with reference to the accompanying drawings. To make the objectives, technical solutions, and advantages of the present disclosure clearer, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present disclosure.

[0022] Therefore, the following detailed description of embodiments of the present disclosure provided in conjunction with the accompanying drawings is not intended to limit the scope of the claimed disclosure, but merely to illustrate selected embodiments of the disclosure. All other embodiments obtained by those skilled in the art based on the embodiments of the present disclosure without inventive effort are within the scope of protection of the present disclosure.

[0023] Example 1

[0024] The machine includes a pad 20 and a frame 30. The pad 20 is located on the upper worktable of the bending machine 10, and the frame 30 is located on the lower worktable of the bending machine 10. When the bending machine 10 is performing bending operations, both the pad 20 and the frame 30 remain fixed and will not move up or down. The pad 20 is connected to multiple sets of guide rods 21. Both the multiple sets of guide rods 21 and the frame 30 extend laterally forward. The length of the frame 30 is less than the length of the multiple sets of guide rods 21.

[0025] Multiple sets of guide rods 21 are sleeved with movable plates 22. An electric control cylinder 23 that can drive the movable plates 22 to move is installed on the pad 20. A support plate 31 is slidably fitted into the frame 30. A traction frame 29 is connected to one side of the movable plate 22. The traction frame 29 extends downward and connects to the support plate 31. Multiple sets of ball bearings 311 are provided on the upper surface of the support plate 31.

[0026] The electric control cylinder 23 drives the movable plate 22 to move according to the length of the plate. The movable plate 22 drives the bearing plate 31 to move synchronously through the traction frame 29, so that the bearing plate 31 can support and lift the tail end of the plate.

[0027] The movable plate 22 is equipped with an unwinding shaft 25 and a power motor 26. The unwinding shaft 25 is wound with a release film 27. The power motor 26 is used to drive the unwinding shaft 25 to rotate to wind up or unwind the release film 27. The bottom end of the release film 27 is provided with a vertical strip. The vertical strip is connected to a hook 28 that can be hung on the front end of the support plate 31. The release film 27 is a transparent film.

[0028] After the part of the sheet to be bent is placed into the bending machine 10 and the tail end is supported and lifted by the bearing plate 31, the power motor 26 drives the roller to rotate and unwind the isolation film 27. The isolation film 27 extends downward under the action of gravity of the vertical bar and is hooked to the front end of the bearing plate 31 through the hook 28, thereby blocking the sheet to be bent.

[0029] Example 2

[0030] The machine includes a pad 20 and a frame 30. The pad 20 is located on the upper worktable of the bending machine 10, and the frame 30 is located on the lower worktable of the bending machine 10. When the bending machine 10 is performing bending operations, both the pad 20 and the frame 30 remain fixed and will not move up or down. The pad 20 is connected to multiple sets of guide rods 21. Both the multiple sets of guide rods 21 and the frame 30 extend laterally forward. The length of the frame 30 is less than the length of the multiple sets of guide rods 21.

[0031] Multiple sets of guide rods 21 are sleeved with movable plates 22. An electric control cylinder 23 that can drive the movable plates 22 to move is installed on the pad 20. A support plate 31 is slidably fitted into the frame 30. A traction frame 29 is connected to one side of the movable plate 22. The traction frame 29 extends downward and connects to the support plate 31. Multiple sets of ball bearings 311 are provided on the upper surface of the support plate 31.

[0032] The electric control cylinder 23 drives the movable plate 22 to move according to the length of the plate. The movable plate 22 drives the bearing plate 31 to move synchronously through the traction frame 29, so that the bearing plate 31 can support and lift the tail end of the plate.

[0033] A stop block 301 is provided on the frame 30, and a limit block 312 is connected to the bearing plate 31. The stop block 301 can contact the limit block 312 to form a limit, so that the bearing plate 31 will not detach from the frame 30.

[0034] The movable plate 22 is equipped with an unwinding shaft 25 and a power motor 26. The unwinding shaft 25 is wound with a release film 27. The power motor 26 is used to drive the unwinding shaft 25 to rotate to wind or unwind the release film 27. A control panel is installed on the traction frame 29. The control panel is used to control the power motor 26. A vertical strip is provided at the bottom of the release film 27. The vertical strip is connected to a hook 28 that can be hung on the front end of the support plate 31. The release film 27 is a transparent film.

[0035] After the part of the sheet to be bent is placed into the bending machine 10 and the tail end is supported and lifted by the bearing plate 31, the power motor 26 drives the roller to rotate and unwind the isolation film 27. The isolation film 27 extends downward under the action of gravity of the vertical bar and is hooked to the front end of the bearing plate 31 through the hook 28, thereby blocking the sheet to be bent.

[0036] On the other side of the movable plate 22, a detection component 24 is provided. The detection component 24 includes two sets of upright plates 241 connected to the support plate 31. One set of upright plates 241 is equipped with a light emitter 242, and the other set of upright plates 241 is equipped with a light receiver 243. The two sets of upright plates 241 are distributed at intervals. During the bending process, the operator is located in the position of moving the plate laterally, and the light emitter 242 and the light receiver 243 form a light curtain area. If the operator's body part blocks the light during bending, the bending machine 10 will stop immediately.

[0037] Working principle:

[0038] The operator is positioned on one side of the frame 30. The operator pre-moves the movable plate 22 via the electric cylinder 23 according to the length of the sheet material. The movable plate 22 moves the bearing plate 31 synchronously via the pull frame 29. The operator feeds the portion to be bent into the bending machine 10 by laterally moving the bearing plate 31. The bearing plate 31 supports and lifts the tail end of the sheet material. Then, the operator controls the power motor 26 to drive the roller to rotate and unwind the isolation film 27. The isolation film 27 extends downwards under the weight of the vertical bar and hooks onto the front end of the bearing plate 31 via the hook 28, thus blocking the sheet material to be bent. During the bending process, the operator or other personnel can avoid the warped area of ​​the sheet material, providing protection. Simultaneously, the operator's position is equipped with a detection component 24, which forms a light curtain area that, when obstructed, prevents the operator from reaching above the warped area of ​​the sheet material and causing injury.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective device for a bending machine, characterized in that, It includes a pad plate set at the upper worktable of the bending machine and a frame set at the lower worktable of the bending machine. The pad plate is connected to multiple sets of guide rods, and the multiple sets of guide rods and the frame all extend laterally forward. Multiple sets of guide rods are sleeved with movable plates, and an electrically controlled cylinder that can drive the movable plates to move is installed on the pad. The frame is slidably fitted with a bearing plate. A traction frame is connected to one side of the movable plate. The traction frame extends downward and connects to the bearing plate. A detection component is provided on the other side of the movable plate. The movable plate is equipped with an unwinding shaft and a power motor. The unwinding shaft is wound with a release film. The power motor is used to drive the unwinding shaft to rotate and rewind or unwind the release film. A vertical strip is provided at the bottom end of the release film.

2. The protective device for a bending machine according to claim 1, characterized in that, The length of the frame is less than the length of the multiple sets of guide rods.

3. A protective device for a bending machine according to claim 2, characterized in that, The frame is provided with a stop block, and the bearing plate is connected to a limit block. The stop block can contact the limit block to form a limit.

4. A protective device for a bending machine according to claim 1, characterized in that, The upper surface of the bearing plate is provided with multiple sets of ball bearings.

5. A protective device for a bending machine according to claim 1, characterized in that, The isolation membrane is a transparent membrane.

6. A protective device for a bending machine according to claim 5, characterized in that, The vertical bar is connected to a hook that can be attached to the front end of the support plate.

7. A protective device for a bending machine according to claim 1, characterized in that, The detection component includes two sets of uprights connected to the support plate, one set of uprights being equipped with a light emitter and the other set of uprights being equipped with a light receiver.

8. A protective device for a bending machine according to claim 1, characterized in that, The traction frame is equipped with a control panel, which is used to control the power motor.

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