Anti-interference safety light curtain device

Abstract

The utility model relates to the technical field of safety light curtains, and discloses an anti-interference safety light curtain device which comprises a base, the left side and the right side of the top end of the base are fixedly connected with protective shells, and the interiors of the protective shells are movably connected with lead screws. According to the anti-interference safety light curtain device, the screw rod, the movable sleeve, the servo motor, the worm gear, the worm and the limiting block are arranged, the servo motor drives the worm to rotate at one end of the worm gear, the worm gear is matched with the worm, and the screw rod is fixedly connected to the bottom end of the exterior of the worm gear, so that the worm rotates to drive the screw rod to rotate through the worm gear; the screw rod rotates so that the movable sleeve can drive the anti-interference safety light curtain to ascend and descend to adjust the height of the anti-interference safety light curtain, the worm gear and the worm are used for driving the screw rod to rotate, self-locking can be achieved, stable transmission can be achieved, noise is low, and the problems that the anti-interference safety light curtain is poor in ascending and descending stability, and the anti-interference safety light curtain cannot ascend and descend easily are solved. And in addition, accidental ascending and descending are easily caused in the use process, and use is easily affected.

Description

Technical Field

[0001] This utility model relates to the field of safety light curtain technology, specifically to an anti-interference safety light curtain device. Background Technology

[0002] Anti-interference safety light curtains, also known as safety light grids, punch press protectors, photoelectric protection devices, etc., are a type of photoelectric safety protection device. When in use, anti-interference safety light curtains have good anti-interference capabilities against electromagnetic signals, strobe lights, welding arc light, and ambient light sources. They can work stably in complex industrial environments. Existing anti-interference safety light curtains all have good shock resistance, anti-interference capabilities, anti-electromagnetic interference capabilities, and anti-light interference capabilities. Anti-interference safety light curtains are crucial for ensuring safety and efficiency in industrial production processes.

[0003] Some anti-interference safety light curtain devices still have some problems. For example, when using the device, the height of the anti-interference safety light curtain needs to be adjusted according to the needs. However, the stability of the anti-interference safety light curtain is poor, and it is easy to accidentally rise or fall during use, which can easily affect its use.

[0004] Therefore, we propose an anti-interference safety light curtain device to improve upon the above-mentioned problems. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-interference safety light curtain device to solve the problems mentioned in the background art, such as poor stability of the lifting and lowering of the anti-interference safety light curtain, and the tendency for it to be accidentally raised and lowered during use, which can easily affect its use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an anti-interference safety light curtain device, comprising a base, characterized in that: protective shells are fixedly connected to the left and right sides of the top of the base, a lead screw is movably connected inside the protective shell, and a drive structure for rotating the lead screw is provided inside the base;

[0007] The drive structure includes a worm gear and a worm. The worm gear is fixedly connected to the bottom of the lead screw. A servo motor is installed at the rear end of the right side of the base. The output end of the servo motor is fixedly connected to the worm. A limit block is fixedly connected at the middle position of the rear end inside the base. A movable sleeve is provided on the outside of the lead screw. A connecting block is fixedly connected to the side of the movable sleeve near the middle. A mounting bracket is fixedly connected to the side of the connecting block near the middle. Anti-interference safety light curtains are provided on the left and right sides of the top of the base.

[0008] As a further technical solution of this utility model, the worm gear is disposed on the left and right sides inside the base, and the limiting block is disposed on the outside of the worm.

[0009] As a further technical solution of this utility model, the worm gear is movably connected to the rear end inside the base, and the worm gear and the worm wheel are matched with each other.

[0010] As a further technical solution of this utility model, the left and right sides of the front and rear ends of the base are fixedly connected to fixing blocks, the bottom end of the fixing blocks is equipped with casters, the inside of the fixing blocks is provided with a threaded rod on the side near the outside, the top end of the threaded rod is fixedly connected to a throttle, the bottom end of the threaded rod is provided with a limit plate, the bottom end of the threaded rod is fixedly connected to a rotating block, and the top end of the limit plate is fixedly connected to a rotating groove.

[0011] As a further technical solution of this utility model, the interior of the fixed block and the threaded rod are threadedly connected, and the rotating block rotates inside the rotating groove.

[0012] As a further technical solution of this utility model, an installation block is fixedly connected to the side of the anti-interference safety light curtain near the outside. The installation block is embedded inside the mounting frame. A fixing plate is fixedly connected to the middle position of the bottom end of the mounting frame. Movable plates are provided at the front and rear ends of the fixing plate. A spring is fixedly connected between the movable plate and the fixing plate. A damper is provided inside the spring. A limit rod is fixedly connected to the top of the movable plate near the middle end. Limit grooves are respectively opened at both ends inside the mounting frame and the installation block.

[0013] As a further technical solution of this utility model, the limiting rod is embedded inside the limiting groove, and the mounting block is fixed inside the mounting frame by the limiting rod and the limiting groove.

[0014] As a further technical solution of this utility model, the damper is fixed between the movable plate and the fixed plate, and the movable plate is symmetrically distributed about the vertical center line of the mounting frame.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the anti-interference safety light curtain device not only improves the stability of the anti-interference safety light curtain body and facilitates the limiting of the base, but also facilitates the disassembly and assembly of the anti-interference safety light curtain body.

[0016] (1) By setting a lead screw, movable sleeve, servo motor, worm wheel, worm and limit block, when it is necessary to adjust the height of the anti-interference safety light curtain, the servo motor is started. The servo motor drives the worm to rotate at one end of the worm wheel. Since the worm wheel and worm cooperate with each other and the lead screw is fixedly connected to the bottom of the worm wheel, the rotation of the worm can drive the lead screw to rotate through the worm wheel. The rotation of the lead screw can drive the movable sleeve to raise and lower the anti-interference safety light curtain to adjust the height of the anti-interference safety light curtain. Using the worm wheel and worm to drive the lead screw to rotate can not only achieve self-locking, but also achieve smooth transmission and low noise.

[0017] (2) By setting a fixed block, a limiting plate, a threaded rod, a throttle, a rotating block and a rotating groove, the caster drives the device to a suitable position. When the throttle is turned, the throttle drives the threaded rod to rotate inside the fixed block, so that the rotating block at the bottom of the threaded rod abuts against the limiting plate and drives the limiting plate to descend. This allows the limiting plate to abut against the ground and limit the caster, preventing the caster from accidentally driving the device to move and affecting the use of the device.

[0018] (3) By setting up a movable plate, mounting block, limit rod, limit groove, spring and damper, push the movable plate to move the limit rod outward, and then put the mounting block on one side of the anti-interference safety light curtain into the inside of the mounting frame. After it is in place, release the movable plate. The spring will use its own elasticity to make the limit rod embed in the inside of the limit groove to limit and fix the mounting block, thus completing the installation of the anti-interference safety light curtain. When it needs to be disassembled, push the movable plate again to make the limit rod disengage from the inside of the limit groove. Attached Figure Description

[0019] Figure 1 This is a frontal cross-sectional view of the present invention.

[0020] Figure 2 This is a top view sectional structural diagram of the base of this utility model;

[0021] Figure 3 This is an enlarged side sectional view of the mounting bracket of this utility model.

[0022] Figure 4 For the present utility model Figure 1 Enlarged cross-sectional view of point A in the middle.

[0023] In the diagram: 1. Base; 2. Anti-interference safety light curtain; 3. Fixing block; 4. Casters; 5. Protective shell; 6. Lead screw; 7. Movable sleeve; 8. Mounting bracket; 9. Movable plate; 10. Mounting block; 11. Connecting block; 12. Servo motor; 13. Limiting plate; 14. Threaded rod; 15. Worm gear; 16. Worm; 17. Limiting block; 18. Limiting rod; 19. Limiting groove; 20. Fixing plate; 21. Spring; 22. Damper; 23. Throttle; 24. Rotating block; 25. Rotating groove. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-4The present invention provides an embodiment of an anti-interference safety light curtain device, comprising a base 1, with protective shells 5 fixedly connected to the left and right sides of the top of the base 1, a lead screw 6 movably connected inside the protective shell 5, and a drive structure for rotating the lead screw 6 provided inside the base 1.

[0026] The drive structure includes a worm gear 15 and a worm 16. The worm gear 15 is fixedly connected to the bottom of the lead screw 6. A servo motor 12 is installed at the rear end of the right side of the base 1. The output end of the servo motor 12 is fixedly connected to the worm 16. A limit block 17 is fixedly connected at the middle position of the rear end inside the base 1. A movable sleeve 7 is provided on the outside of the lead screw 6. A connecting block 11 is fixedly connected to the side of the movable sleeve 7 near the middle. A mounting bracket 8 is fixedly connected to the side of the connecting block 11 near the middle. Anti-interference safety light curtains 2 are provided on the left and right sides of the top of the base 1.

[0027] The worm gear 15 is located on the left and right sides inside the base 1, and the limiting block 17 is located outside the worm 16. The worm 16 is movably connected to the rear end inside the base 1, and the worm 16 and the worm gear 15 cooperate with each other.

[0028] Specifically, such as Figure 1 and Figure 2 As shown, when the height of the anti-interference safety light curtain 2 needs to be adjusted, the servo motor 12 is started. The servo motor 12 drives the worm gear 16 to rotate at one end of the worm wheel 15. Since the worm wheel 15 and the worm gear 16 cooperate with each other, and the lead screw 6 is fixedly connected to the bottom end of the worm wheel 15, the rotation of the worm gear 16 can drive the lead screw 6 to rotate through the worm wheel 15. The rotation of the lead screw 6 can cause the movable sleeve 7 to lift and lower the anti-interference safety light curtain 2 to adjust its height. Using the worm wheel 15 and the worm gear 16 to drive the lead screw 6 to rotate can not only achieve self-locking, but also achieve smooth transmission and low noise.

[0029] The base 1 has fixed blocks 3 on the left and right sides at both ends. Casters 4 are installed at the bottom of the fixed blocks 3. A threaded rod 14 is movably installed inside the fixed blocks 3 on the side near the outside. A handle 23 is fixedly connected to the top of the threaded rod 14. A limit plate 13 is provided at the bottom of the threaded rod 14. A rotating block 24 is fixedly connected to the bottom of the threaded rod 14. A rotating groove 25 is fixedly connected to the top of the limit plate 13. The inside of the fixed blocks 3 and the threaded rod 14 are threadedly connected. The rotating block 24 rotates inside the rotating groove 25.

[0030] Specifically, such as Figure 1 and Figure 4As shown, the caster 4 moves the device to a suitable position. Turning the handle 23 causes the threaded rod 14 to rotate inside the fixed block 3, so that the rotating block 24 at the bottom of the threaded rod 14 abuts against the limiting plate 13, causing the limiting plate 13 to descend. This allows the limiting plate 13 to abut against the ground and limit the caster 4, preventing the caster 4 from accidentally moving the device and affecting its use.

[0031] An anti-interference safety light curtain 2 is fixedly connected to a mounting block 10 on one side near the outside. The mounting block 10 is embedded inside the mounting frame 8. A fixed plate 20 is fixedly connected to the middle position of the bottom end of the mounting frame 8. Movable plates 9 are provided at the front and rear ends of the fixed plate 20. A spring 21 is fixedly connected between the movable plate 9 and the fixed plate 20. A damper 22 is provided inside the spring 21. A limit rod 18 is fixedly connected to the top of the movable plate 9 near the middle end. Limit grooves 19 are respectively opened at both ends inside the mounting frame 8 and the mounting block 10. The limit rod 18 is embedded inside the limit groove 19. The mounting block 10 is fixed inside the mounting frame 8 by the limit rod 18 and the limit groove 19. The damper 22 is fixed between the movable plate 9 and the fixed plate 20. The movable plate 9 is symmetrically distributed about the vertical center line of the mounting frame 8.

[0032] Specifically, such as Figure 1 and Figure 3 As shown, push the movable plate 9 to move the limiting rod 18 outward, and then place the mounting block 10 on one side of the anti-interference safety light curtain 2 into the mounting frame 8. After placement, release the movable plate 9. The spring 21, through its own elasticity, causes the limiting rod 18 to be embedded in the limiting groove 19, thus limiting and fixing the mounting block 10. This completes the installation of the anti-interference safety light curtain 2. When disassembly is required, push the movable plate 9 again to disengage the limiting rod 18 from the limiting groove 19.

[0033] Working principle: When in use, push the device, and the caster 4 will move the device to a suitable position. After moving to the suitable position, turn the handle 23. The handle 23 will drive the threaded rod 14 to rotate inside the fixed block 3, so that the rotating block 24 at the bottom of the threaded rod 14 abuts against the limiting plate 13, causing the limiting plate 13 to descend. This allows the limiting plate 13 to abut against the ground and limit the caster 4. Push the movable plate 9, which will drive the limiting rod 18 to move outward. Then, place the mounting block 10 on one side of the anti-interference safety light curtain 2 into the mounting frame 8. After placement, release the movable plate 9. The spring 21, through its elasticity, will cause the limiting rod 18 to be embedded in the limiting groove 19, limiting and fixing the mounting block 10. This completes the installation of the anti-interference safety light curtain 2. When the height of the anti-interference safety light curtain 2 needs to be adjusted, the servo motor 12 is started. The servo motor 12 drives the worm gear 16 to rotate at one end of the worm wheel 15. Since the worm wheel 15 and the worm gear 16 cooperate with each other, and the lead screw 6 is fixedly connected to the bottom end of the worm wheel 15, the rotation of the worm gear 16 can drive the lead screw 6 to rotate through the worm wheel 15. The rotation of the lead screw 6 can cause the movable sleeve 7 to lift and lower the anti-interference safety light curtain 2 to adjust its height. Using the worm wheel 15 and the worm gear 16 to drive the lead screw 6 to rotate can not only achieve self-locking, but also achieve the advantages of smooth transmission and low noise. When disassembly is required, push the movable plate 9 again to make the limit rod 18 disengage from the inside of the limit groove 19. Disassembling the anti-interference safety light curtain 2 can facilitate its maintenance.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An anti-interference safety light curtain device, comprising a base (1), characterized in that: Protective shells (5) are fixedly connected to the left and right sides of the top of the base (1). A lead screw (6) is movably connected inside the protective shell (5). A drive structure for rotating the lead screw (6) is provided inside the base (1). The drive structure includes a worm gear (15) and a worm (16). The worm gear (15) is fixedly connected to the bottom of the lead screw (6). A servo motor (12) is installed at the rear end of the right side of the base (1). The output end of the servo motor (12) is fixedly connected to the worm (16). A limit block (17) is fixedly connected at the middle position of the rear end inside the base (1). A movable sleeve (7) is provided on the outside of the lead screw (6). A connecting block (11) is fixedly connected to the side of the movable sleeve (7) near the middle. A mounting bracket (8) is fixedly connected to the side of the connecting block (11) near the middle. Anti-interference safety light curtains (2) are provided on the left and right sides of the top of the base (1).

2. The anti-interference safety light curtain device according to claim 1, characterized in that: The worm gear (15) is located on the left and right sides inside the base (1), and the limiting block (17) is located outside the worm (16).

3. The anti-interference safety light curtain device according to claim 1, characterized in that: The worm (16) is movably connected to the rear end inside the base (1), and the worm (16) and the worm wheel (15) cooperate with each other.

4. The anti-interference safety light curtain device according to claim 1, characterized in that: The base (1) has fixed blocks (3) fixedly connected to the left and right sides at both ends. The bottom of the fixed block (3) is equipped with casters (4). The fixed block (3) has a threaded rod (14) movably installed on the side of the fixed block (3) near the outside. The top of the threaded rod (14) is fixedly connected with a throttle (23). The bottom of the threaded rod (14) is provided with a limit plate (13). The bottom of the threaded rod (14) is fixedly connected with a rotating block (24). The top of the limit plate (13) is fixedly connected with a rotating groove (25).

5. The anti-interference safety light curtain device according to claim 4, characterized in that: The interior of the fixed block (3) and the threaded rod (14) are threadedly connected, and the rotating block (24) rotates inside the rotating groove (25).

6. The anti-interference safety light curtain device according to claim 1, characterized in that: The anti-interference safety light curtain (2) is fixedly connected to a mounting block (10) on the side near the outside. The mounting block (10) is embedded inside the mounting frame (8). A fixing plate (20) is fixedly connected to the middle position of the bottom end of the mounting frame (8). Movable plates (9) are provided at the front and rear ends of the fixing plate (20). A spring (21) is fixedly connected between the movable plate (9) and the fixing plate (20). A damper (22) is provided inside the spring (21). A limit rod (18) is fixedly connected to the top of the movable plate (9) near the middle end. Limit grooves (19) are respectively opened at both ends inside the mounting frame (8) and the mounting block (10).

7. The anti-interference safety light curtain device according to claim 6, characterized in that: The limiting rod (18) is embedded inside the limiting groove (19), and the mounting block (10) is fixed inside the mounting frame (8) by the limiting rod (18) and the limiting groove (19).

8. The anti-interference safety light curtain device according to claim 6, characterized in that: The damper (22) is fixed between the movable plate (9) and the fixed plate (20), and the movable plate (9) is symmetrically distributed about the vertical center line of the mounting frame (8).

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