Protective assembly, protective alarm mechanism and torsion shaft bending machine

Abstract

The utility model discloses a protection subassembly, protection alarm mechanism and torsion shaft bending machine belongs to bending machine technical field, the protection subassembly includes: protection frame, presents bending and surrounds the structure, and is formed by first vertical frame, horizontal frame and second vertical frame head fixed connection, all be equipped with observation window on the horizontal frame, top sealing board is detachably fixed at the top of protection frame through bolt, and the intelligent sensing mechanism includes laser emission module and laser receiving module, and the laser emission module is fixed in the inner side wall of second vertical frame along vertical direction through adjusting support, and the inner side wall fixed with laser receiving module of corresponding first vertical frame, the laser beam of laser emission module emission is collinear with the central axis of first vertical frame, and the protection surface formed by laser beam is parallel with the upper surface of bending machine workstation.

Description

Technical Field

[0001] This utility model belongs to the field of bending machine technology, and more specifically, relates to a protective component, a protective alarm mechanism, and a torsion shaft bending machine, which is suitable for safety protection and monitoring of violations of equipment and operators during sheet metal processing. Background Technology

[0002] As a core piece of equipment in the sheet metal industry, the bending machine uses a hydraulic system to provide power and an electrical system to control the slide, which in turn drives the upper and lower dies to close, thus achieving the bending process of sheet metal. Different models of bending machines are designed for different maximum processing thicknesses and widths of steel plates. However, traditional bending machines generally lack effective limit monitoring devices. It is common for workers to illegally place steel plates exceeding the maximum bending width into the machine for processing. This not only easily causes the portion of the steel plate extending beyond the worktable to warp up and damage the machine, but may also injure the operator.

[0003] Existing technologies include some bending machines with protective structures. For example, limiting the width of unauthorized processing is achieved by setting limit covers on both sides of the workbench, or a protective cover with a protective door is used to create a protective space. Patent document CN215845384U discloses a torsion shaft bending machine with a protective device. Its infrared fiber optic sensing mechanism includes an infrared emitting component and an infrared receiving component. The infrared emitting component is longitudinally arranged on the third frame, and the corresponding infrared receiving component is arranged on the first frame. The infrared rays emitted by the infrared emitting component coincide with the central axis of the first frame. Borrowing from the sensor structure of an automatic elevator switch, an infrared light sensing mechanism is installed inside the protective cover. When the part to be bent crosses the warning line and enters the protective cover, the infrared light sensing mechanism is triggered, simultaneously illuminating a red light and sounding an alarm, thus achieving a warning effect.

[0004] However, these protective structures have obvious defects: on the one hand, the protective covers are large in size and occupy production space; on the other hand, they can only passively block illegal operations and cannot monitor and actively warn against illegal behavior in real time. Even if the operators touch the protective structure, they may still violate the rules again, making it difficult to fundamentally eliminate safety hazards. Utility Model Content

[0005] 1. Technical problems to be solved To address the problems existing in the prior art, the purpose of this utility model is to provide a protective component, a protective alarm mechanism, and a torsion shaft bending machine. By integrating sensor detection and an audible and visual alarm mechanism, it can achieve real-time monitoring and proactive warning of violations, guide operators to operate in a standardized manner, and reduce the risk of equipment damage and personal injury.

[0006] 2. Technical Solution To solve the above problems, the present invention adopts the following technical solution.

[0007] The protective components of this utility model include: The protective frame has a bent and enclosed structure, consisting of a first vertical frame, a horizontal frame, and a second vertical frame that are fixedly connected end to end. Each horizontal frame has an observation window, and each observation window is sealed with a high-strength transparent acrylic sheet. The top panel is made of stainless steel and can be detachably fixed to the top of the protective frame with bolts. The edges of the top panel are provided with anti-scratch chamfers. The intelligent sensing mechanism includes a laser emitting module and a laser receiving module. The laser emitting module is fixed vertically to the inner wall of the second vertical frame via an adjusting bracket. The corresponding inner wall of the first vertical frame is fixed with a laser receiving module. The laser beam emitted by the laser emitting module is collinear with the central axis of the first vertical frame, and the protective surface formed by the laser beam is parallel to the upper surface of the bending machine workbench.

[0008] In one possible embodiment of this utility model, the laser receiving module is a long strip-shaped array receiving structure, the length of which is consistent with the height of the second vertical frame, and at least two laser receiving points are evenly distributed on the laser receiving module.

[0009] In one possible embodiment of this utility model, the lowest receiving point of the laser receiving module is located 3-5cm below the surface of the bending machine workbench, and the highest receiving point is 10-15cm above the maximum stroke height of the bending machine slider.

[0010] In one possible embodiment of this utility model, the distance between two adjacent laser receiving points is 3-5cm, and the laser beam emitted by the laser emitting module covers all laser receiving points to form a continuous protective light curtain.

[0011] In one possible embodiment of this utility model, a distance sensor is also fixed to the inner wall of the protective frame. The detection direction of the distance sensor is perpendicular to the protective light curtain. The distance sensor is electrically connected to the control module and is used to detect the distance between the workpiece to be bent and the protective light curtain.

[0012] In one possible embodiment of this utility model, the outer wall of the protective frame is provided with a violation counting display screen, which is electrically connected to the violation recording unit of the control module and is used to display the number of violations in real time.

[0013] This utility model also provides a protective alarm mechanism, including an audible and visual alarm mechanism and the aforementioned protective components. The audible and visual alarm mechanism is fixedly installed on the outer top of the protective frame and includes a warning light and a voice alarm. The warning light uses red, yellow and green LED lights, and the voice alarm has at least three built-in warning voices.

[0014] This utility model also provides a torsion shaft bending machine, including a bending machine body, a control module, and protective alarm mechanisms symmetrically fixed on both sides of the bending machine body. The control module adopts a PLC controller and is electrically connected to the intelligent sensing mechanism, the audible and visual alarm mechanism, and the control system of the bending machine body. The control module has a built-in delay trigger unit and a violation recording unit.

[0015] 3. Beneficial effects Compared with the prior art, the beneficial effects of this utility model are as follows: (1) This utility model forms a continuous laser protective light curtain through an intelligent sensing mechanism. When the workpiece to be bent exceeds the maximum processing width and crosses the warning line into the protective area, the laser receiving module is blocked, and the control module immediately triggers the sound and light alarm mechanism: the warning light switches to a flashing red light, the voice alarm plays the warning voice in a loop, and the violation record is stored in the violation record unit. This not only warns the operator to stop the violation in real time, but also records the violation, which is convenient for subsequent management and training, and fundamentally reduces the occurrence of violation.

[0016] (2) The laser receiving module of this utility model adopts an array receiving structure with at least 2 receiving points and the coverage extends from 3-5cm below the worktable to 10-15cm above the maximum stroke of the slider. It can comprehensively detect non-compliant workpieces of different sizes and heights, avoid protection failure due to blind spots, and has a wider protection range and higher reliability.

[0017] (3) The observation window on the protective frame of this utility model is made of high-strength transparent acrylic sheet, which not only ensures that the operator can clearly observe the processing process, but also has sufficient mechanical strength to prevent workpieces from splashing and causing injury; the top sealing plate adopts a detachable design, which is convenient for equipment maintenance and repair, and the bottom of the protective frame is fixed to the ground, which improves the stability of the protective components.

[0018] (4) The addition of a distance sensor and a violation counting display screen in this utility model allows the distance sensor to detect the distance between the workpiece and the protective light curtain in advance. When the workpiece approaches the warning line, the control module controls the warning light to switch to a yellow light to remind the user, thus realizing the pre-warning function. The violation counting display screen displays the number of violations in real time, which can play a role in urging operators to operate in a standardized manner and further improve the safety protection effect.

[0019] (5) The control module of this utility model is electrically connected to the main control system of the bending machine. The linkage function can be set according to actual needs: when the violation continues for a certain period of time, it can be adjusted through the delay trigger unit. The control module can send a signal to the bending machine control system to suspend the operation of the bending machine, avoid equipment damage and safety accidents, and provide more comprehensive protection. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the torsion shaft bending machine of this utility model; Figure 2 This is the front view of the torsion shaft bending machine of this utility model; Figure 3 This is a top view of the torsion shaft bending machine of this utility model; Figure 4 This is a schematic diagram of the protective component structure of this utility model.

[0021] Explanation of markings in the diagram: 100. Protective frame; 110. First vertical frame; 120. Horizontal frame; 121. Observation window; 122. High-strength transparent acrylic sheet; 130. Second vertical frame; 200. Top sealing plate; 300. Intelligent sensing mechanism; 310. Laser emitting module; 320. Laser receiving module; 321. Laser receiving point; 330. Adjustment bracket; 400. Audible and visual alarm mechanism; 410. Warning light; 420. Voice alarm device; 500. Bending machine body; 510. Worktable; 520. Sliding block; 600. Control module; 700. Distance sensor; 800. Violation counting display screen. Detailed Implementation

[0022] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0023] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Example 1 like Figures 1 to 4 As shown, the torsion bar bending machine of this embodiment includes a bending machine body 500 and protective components symmetrically fixed on both sides of the bending machine body 500. The distance between the protective components and the bending machine body 500 is 50-80cm, which can adapt to the processing requirements of different models of bending machines.

[0026] In this embodiment, the protective components specifically include a protective frame 100, a top sealing plate 200, an intelligent sensing mechanism 300, an audible and visual alarm mechanism 400, a control module 600, a distance sensor 700, and a violation counting display screen 800.

[0027] Furthermore, combined with Figure 4 The protective frame 100 is a bent, enclosed structure, consisting of a first vertical frame 110, a horizontal frame 120, and a second vertical frame 130, which are fixedly connected by welding. It is made of 304 stainless steel to ensure structural strength and corrosion resistance. Each horizontal frame 120 has an observation window 121 measuring 30cm x 20cm. Each observation window 121 is sealed with a high-strength transparent acrylic sheet 122 with a thickness of 8mm using sealant.

[0028] like Figure 1 As shown, the top cover plate 200 is made of 5mm thick stainless steel plate and can be detachably fixed to the top of the protective frame 100 by 8 cross-slot countersunk bolts. The edges of the top cover plate 200 are ground with a grinding wheel to form a 2mm anti-scratch chamfer to prevent operators from being bumped and injured.

[0029] exist Figure 4 In this embodiment, the intelligent sensing mechanism 300 includes a laser emitting module 310 and a laser receiving module 320. The laser emitting module 310 is a red laser emitter of model LD-650-50, which is fixed vertically to the inner wall of the second vertical frame 130 by an adjusting bracket 330. The adjusting bracket 330 can adjust the height by ±5cm. The corresponding inner wall of the first vertical frame 110 is fixed with a laser receiving module 320 by bolts. The laser receiving module 320 is an array laser receiver of model LS-108. The laser beam emitted by the laser emitting module 310 is collinear with the central axis of the first vertical frame 110, and the protective surface formed by the laser beam is parallel to the upper surface of the bending machine workbench 510.

[0030] In this embodiment, the laser receiving module 320 is a long strip structure with a length consistent with the height of the second vertical frame 130, for example, 1.2m in this embodiment. Ten laser receiving points 321 are evenly distributed on the laser receiving module 320, and the distance between two adjacent laser receiving points 321 is 4cm. The lowest receiving point of the laser receiving module 320 is located 4cm below the surface of the bending machine workbench 510, and the highest receiving point is 12cm above the maximum stroke height of the bending machine slider 520, ensuring no detection blind spots.

[0031] Furthermore, in Figure 2 and Figure 3In the middle, the sound and light alarm mechanism 400 is fixed to the top outer side of the protective frame 100 by the mounting base, including a warning light 410 and a voice alarm 420. The warning light 410 uses red, yellow and green tri-color LED lights with a rated voltage of 220V and a brightness of ≥5000mcd. The voice alarm 420 uses a YS-828 voice module, which has three built-in warning voices such as "Violation of operation, please adjust the workpiece immediately" and "Out of processing range, the equipment will be stopped soon". The volume can be adjusted between 60-120dB.

[0032] Furthermore, the control module 600 uses an S7-200 SMART PLC controller, which is fixed to the inner wall of the protective frame 100. It is electrically connected to the intelligent sensing mechanism 300, the audible and visual alarm mechanism 400, the distance sensor 700, the violation counting display screen 800, and the control system of the bending machine body 500 via wires. The control module 600 has a built-in delay trigger unit, the delay time of which can be set in the range of 1-10 seconds. It also has a built-in violation recording unit, which can store the most recent 100 violation operation records, including the time and duration.

[0033] In addition, the distance sensor 700 is an infrared distance sensor of model GP2Y0A21YK, which is fixed on the inner wall of the protective frame 100. The detection direction is perpendicular to the protective light curtain, and the detection distance range is 10-80cm. It is used to detect the distance between the workpiece to be bent and the protective light curtain. When the distance is ≤15cm, a signal is sent to the control module 600.

[0034] The violation counting display screen 800 uses an LCD1602 liquid crystal display screen, which is fixed to the outer wall of the protective frame 100 and electrically connected to the violation recording unit of the control module 600. It displays the cumulative number of violations in real time. The display screen has its own backlight, which is convenient for viewing in dim environments.

[0035] The working principle of this embodiment is as follows: When the bending machine is working normally, the control module 600 controls the laser emitting module 310 to emit a laser beam, and all laser receiving points 321 of the laser receiving module 320 can receive the laser signal. At this time, the warning light 410 of the audible and visual alarm mechanism 400 is always green, the voice alarm 420 does not work, and the violation counting display screen 800 displays the current cumulative number of violations.

[0036] When the operator places a workpiece that exceeds the maximum processing width onto the worktable 510, if the workpiece approaches the protective light curtain at a distance of ≤15cm, the distance sensor 700 detects the signal and sends it to the control module 600. The control module 600 then controls the warning light 410 to flash yellow, issuing a pre-warning to remind the operator to adjust the workpiece.

[0037] If the operator fails to adjust in time, and the workpiece continues to move and crosses the warning line, blocking any laser receiving point 321 of the laser receiving module 320, the laser receiving module 320 sends a blocking signal to the control module 600. The control module 600 immediately triggers the following actions: ① The warning light 410 switches to flashing red; ② The voice alarm 420 plays the warning voice in a loop; ③ The violation recording unit records the time and start duration of this violation; ④ The cumulative number of violations on the violation counting display screen 800 is incremented by 1.

[0038] If the duration of the violation reaches the set delay time (set to 5 seconds in this embodiment), the control module 600 sends a pause signal to the control system of the bending machine body 500, and the bending machine stops running. The pause signal will be released only after the operator adjusts the workpiece and the laser receiving module 320 returns to normal receiving status, and the bending machine can be restarted.

[0039] Operators can export violation records through the communication interface of the control module 600 for subsequent safety training and assessment, fundamentally standardizing operational behavior and ensuring the safety of equipment and personnel.

[0040] The above examples are merely descriptions of preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Any modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the design concept of the present invention shall fall within the protection scope of the present invention.

Claims

1. A protective component, comprising: The protective frame (100) has a bent and enclosed structure and is composed of a first vertical frame (110), a horizontal frame (120), and a second vertical frame (130) that are fixedly connected end to end. An observation window (121) is provided on the horizontal frame (120). A top sealing plate (200) is detachably fixed to the top of the protective frame (100) by bolts; characterized in that, The intelligent sensing mechanism (300) includes a laser emitting module (310) and a laser receiving module (320). The laser emitting module (310) is fixed vertically to the inner wall of the second vertical frame (130) via an adjusting bracket (330). The corresponding inner wall of the first vertical frame (110) is fixed with a laser receiving module (320). The laser beam emitted by the laser emitting module (310) is collinear with the central axis of the first vertical frame (110), and the protective surface formed by the laser beam is parallel to the upper surface of the bending machine workbench (510).

2. The protective component according to claim 1, characterized in that, The laser receiving module (320) is a long strip-shaped array receiving structure, the length of which is consistent with the height of the second vertical frame (130), and at least two laser receiving points (321) are evenly distributed on the laser receiving module (320).

3. The protective component according to claim 1, characterized in that, The lowest receiving point of the laser receiving module (320) is located 3-5cm below the surface of the bending machine worktable (510), and the highest receiving point is 10-15cm above the maximum stroke height of the bending machine slider (520).

4. The protective component according to claim 1, characterized in that, The distance between two adjacent laser receiving points (321) is 3-5cm. The laser beam emitted by the laser emitting module (310) covers all laser receiving points (321) to form a continuous protective light curtain.

5. The protective component according to claim 1, characterized in that, The inner wall of the protective frame (100) is also fixed with a distance sensor (700). The detection direction of the distance sensor (700) is perpendicular to the protective light curtain. The distance sensor (700) is electrically connected to the control module (600) and is used to detect the distance between the workpiece to be bent and the protective light curtain.

6. The protective component according to claim 1, characterized in that, The outer wall of the protective frame (100) is provided with a violation counting display screen (800), which is electrically connected to the violation recording unit of the control module (600) for real-time display of the number of violations.

7. The protective component according to claim 1, characterized in that, Each observation window (121) is sealed with a high-strength transparent acrylic sheet (122).

8. The protective component according to claim 1, characterized in that, The top cover (200) is made of stainless steel and has anti-scratch chamfers on its edges.

9. A protective alarm mechanism, characterized in that, The device includes an audible and visual alarm mechanism (400) and a protective component as described in any one of claims 1-8. The audible and visual alarm mechanism (400) is fixedly installed on the top outer side of the protective frame (100). It includes a warning light (410) and a voice alarm (420). The warning light (410) uses red, yellow and green LED lights, and the voice alarm (420) has at least three built-in warning voices.

10. A torsion shaft bending machine, characterized in that, The device includes a bending machine body (500), a control module (600), and protective alarm mechanisms symmetrically fixed on both sides of the bending machine body (500). The protective alarm mechanism is the protective alarm mechanism described in claim 9. The control module (600) adopts a PLC controller and is electrically connected to the intelligent sensing mechanism (300), the audible and visual alarm mechanism (400), and the control system of the bending machine body (500). The control module (600) has a built-in delay trigger unit and a violation recording unit.

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