A high-wear-resistant anti-deformation elevator accessory processing device

Abstract

This invention discloses a high wear-resistant and deformation-resistant elevator parts processing device, including a bracket with an adsorption clamping assembly for adsorbing and clamping the raw materials of the elevator parts. The bracket also has a sliding assembly for driving the adsorption clamping assembly to slide and adjust its position. A smoke-proof assembly is also provided on the bracket for extracting smoke and exhaust gases generated during processing. This invention uses multiple suction cups to simultaneously apply negative pressure to adsorb two elevator parts to be spot-welded. By relying on uniform negative pressure throughout the entire area to continuously pull and adhere the parts, it eliminates suspended areas and overlap gaps, achieving adsorption clamping, automatic centering, and suppression of welding warping. Simultaneously, the uniform adsorption force can offset the thermal expansion and contraction stress generated during spot welding, preventing the material around the weld point from arching and wavy deformation from a physical constraint perspective, avoiding incomplete welds and void welds caused by gaps between the parts, and improving the welding strength and wear resistance of the finished elevator parts.

Description

Technical Field

[0001] This invention relates to the field of elevator parts processing technology, and in particular to a high wear-resistant and deformation-resistant elevator parts processing device. Background Technology

[0002] Stainless steel sheets are the core raw material for elevator car walls, door frames, door panels and other accessories. In the elevator production process, two stainless steel sheets are often butted together and spot-welded. When welding thin stainless steel sheets, the thermal stress is high, which can easily lead to problems such as sheet misalignment, local warping, blackening of weld points, and incomplete welds. The industry continues to raise its requirements for the centering, clamping, deformation resistance and dust protection performance of welding fixtures.

[0003] As described in the authorized patent CN118180691B, a car door panel welding device relies on the protrusions, positioning rods, stop bars, and clamping plates above the worktable to form a mechanical hard limiting structure. Multiple sets of independent telescopic rods drive each positioning component to complete the limiting clamping of the door panel and reinforcing rod. The welding gun mechanism can move in multiple dimensions above the worktable to complete the welding operation. It can adapt to the automatic feeding and spot welding of car door panels of various sizes. However, this device only relies on the rigid components to squeeze the plate at a single point to complete the positioning and clamping. When two stainless steel thin plates are overlapped and spot welded, the plates are not tightly attached, which easily leads to splicing misalignment defects. At the same time, it lacks the function of automatic centering and calibration by point-by-point shifting. After each weld point is completed, the plate position needs to be manually readjusted, resulting in low processing efficiency and poor workpiece flatness. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high wear-resistant and deformation-resistant elevator parts processing device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A high wear-resistant and deformation-resistant elevator parts processing device includes a bracket, on which an adsorption clamping assembly is provided for adsorbing and clamping elevator parts raw materials. The bracket is also provided with a sliding assembly for driving the adsorption clamping assembly to slide and adjust its position. The bracket is provided with a smoke-proof assembly for sucking up smoke and exhaust gas generated during the processing.

[0007] The adsorption clamping assembly includes a piston cylinder, an air extraction pipe, a pressure relief pipe, a base plate, suction cups, and an air extraction mechanism. The air extraction mechanism is used to create a negative pressure inside the suction cups to achieve adsorption and fixation of the raw materials. Several suction cups are installed at the lower end of the base plate. The pressure relief pipe is connected to the piston cylinder. One end of the air extraction pipe is connected to the piston cylinder, and the other end is provided with several branch pipes. The ends of the branch pipes are respectively connected to the corresponding suction cups.

[0008] Preferably, the air extraction mechanism includes a first support plate, a first electric push rod, a second support plate, a first wedge block, a second wedge block, a limiting block, a limiting groove, a third wedge block, a first sliding groove, a mounting block, a connecting rod, a second sliding groove, a second slider, a piston, a piston rod, a spring, a third slider, and a rotating shaft.

[0009] Preferably, the second support plate is installed below the first support plate, the first slide groove and the second slide groove are respectively installed on the first support plate and the second support plate, the third slider and the second slider slide in the first slide groove and the second slide groove respectively, the first wedge block is fixedly connected to the side wall of the first electric push rod, the limiting groove is set at the bottom of the first slide groove, the second wedge block is fixedly connected to the limiting block, the limiting block slides in the limiting groove, the third wedge block is fixedly connected to the side wall of the third slider, one wedge surface of the second wedge block is opposite to the wedge surface of the first wedge block, and the other wedge surface is opposite to the wedge surface of the third wedge block.

[0010] Preferably, the two sets of mounting blocks are respectively mounted on the second slider and the third slider, the rotating shaft is mounted between the two mounting blocks, the connecting rod is rotatably connected to the two rotating shafts, the second slider is fixedly connected to the piston rod, the piston rod is fixedly connected to the piston, the piston slides inside the piston cylinder, the spring is arranged around the piston rod, and one end is fixedly connected to the piston and the other end is fixedly connected to the inner wall of the piston cylinder.

[0011] Preferably, the smoke prevention assembly includes an exhaust gas box, a smoke extraction pump, an inlet pipe, an outlet pipe, and a protective cover. The protective cover is disposed between two second support plates. A laser head is fixedly connected to the telescopic end of the first electric push rod. The exhaust gas box and the smoke extraction pump are connected through the outlet pipe. The smoke extraction pump and the protective cover are connected through the inlet pipe. The smoke extraction pump is installed on the side wall of the exhaust gas box.

[0012] Preferably, the sliding assembly includes a sliding plate, a sliding groove, a mounting base, rollers, a slide rail, a screw, a first slider, and a motor.

[0013] Preferably, the sliding plate is mounted on the bracket, the sliding groove is provided on the side wall of the sliding plate, the roller is rotatably connected to the side of the mounting base via a rotating shaft, the roller rolls in the sliding groove, and the exhaust gas box is mounted above the mounting base.

[0014] Preferably, the slide rail is installed on the side of the smoke pump, the screw is rotatably connected between the two ends of the slide rail, the first slider slides on the screw, and the motor output shaft is fixedly connected to the right end of the screw.

[0015] Preferably, the first support plate is installed below the first slider, the first electric push rod is installed below the first slider and between the two first support plates, the second support plate has an installation cavity on the side away from the first support plate, the piston cylinder is installed in the installation cavity, the second electric push rod is installed below the second slider, and the telescopic end of the second electric push rod is fixedly connected to the middle of the seat plate.

[0016] Preferably, the protective cover is provided with adsorption clamping components on both sides.

[0017] The present invention has the following beneficial effects:

[0018] 1. This invention uses multiple sets of suction cups to simultaneously apply negative pressure to two elevator plates to be spot welded. By relying on uniform negative pressure throughout the entire area to continuously pull and adhere the plates, the suspended areas and overlapping gaps of the plates are eliminated, achieving adsorption clamping and automatic alignment. At the same time, the adsorption force can also offset the thermal expansion and contraction stress generated by spot welding, thereby avoiding the arching and wavy deformation of the plates around the weld point while achieving adsorption alignment.

[0019] 2. The sliding assembly can achieve large-range horizontal displacement and fine-tuning of vertical weld points. Horizontally, the entire machine moves horizontally by sliding plates and rollers, while vertically, the slider is driven by a motor-driven screw. The suction clamping components arranged symmetrically on both sides of the protective cover can synchronously follow the overall displacement of the sliding assembly. It can be adapted to the straight segmented spot welding of long strip plates of car walls and door frames. During the processing, the plate is always kept under uniform negative pressure constraint. After completing a spot welding position, it is reset to release the pressure of the piston cylinder, preparing for the next weld point. This realizes the centering and calibration cycle of the next weld point after each welding, completing the closed loop.

[0020] 3. The protective cover completely encloses the spot welding area. During welding operations, the fume extraction pump is started simultaneously, and the fumes are collected into the exhaust gas box through the air inlet and outlet pipes. A closed micro-negative pressure circulation is formed inside the protective cover. On the one hand, it quickly removes high-temperature welding slag and metal spatter, preventing the suction cup, wedge, and piston transmission mechanism from being blocked and worn by waste slag, thus extending the service life of the entire clamping mechanism. On the other hand, the negative pressure inside the cavity can assist the suction cup in clamping the plate. Under the action of dual negative pressure, it can further eliminate the small overlap gap of the plate while quickly removing the heat from the weld and reducing the heat-affected zone. In this way, it can prevent deformation of the weld and avoid oxidation of the stainless steel weld, which causes it to turn black. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a high wear-resistant and deformation-resistant elevator parts processing device proposed in this invention;

[0022] Figure 2 This is a schematic diagram of the connection structure of the sliding component;

[0023] Figure 3 This is a schematic diagram of the connection structure of the sliding component;

[0024] Figure 4 This is a schematic diagram of the connection structure of the adsorption clamping assembly;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the protective cover and the second sliding groove;

[0026] Figure 6 This is a schematic diagram of the cross-sectional structure of the piston cylinder;

[0027] Figure 7 for Figure 1 Enlarged view of point A in the middle;

[0028] Figure 8 for Figure 3 Enlarged view at point B in the middle;

[0029] Figure 9 for Figure 5 Enlarged view of point C in the middle.

[0030] In the diagram: 1. Bracket, 2. Sliding plate, 3. Sliding groove, 4. Mounting base, 5. Roller, 6. Exhaust gas box, 7. Smoke pump, 8. Inlet pipe, 9. Outlet pipe, 10. Protective cover, 11. Slide rail, 12. Screw, 13. First slider, 14. Motor, 15. First support plate, 16. First electric push rod, 17. Second support plate, 18. First wedge block, 19. Second wedge block, 20. Limiting block, 21. Limiting groove, 22. Third wedge block, 23. First sliding groove, 24. Mounting block, 25. Connecting rod, 26. Second sliding groove, 27. Second slider, 28. Piston cylinder, 29. Piston, 30. Piston rod, 31. Spring, 32. Extraction pipe, 33. Pressure relief pipe, 34. Second electric push rod, 35. Seat plate, 36. Laser head, 37. Suction cup, 38. Third slider, 39. Rotating shaft. Detailed Implementation

[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0032] Example 1

[0033] Reference Figure 1 and Figures 3-9 A high wear-resistant and deformation-resistant elevator parts processing device includes a bracket 1, on which an adsorption clamping assembly is provided for adsorbing and clamping the raw materials of elevator parts. The bracket 1 is also provided with a sliding assembly for driving the adsorption clamping assembly to slide and adjust its position. The bracket 1 is provided with a smoke prevention assembly for sucking up the smoke and exhaust gas generated during the processing.

[0034] The adsorption clamping assembly includes a piston cylinder 28, an air extraction pipe 32, a pressure relief pipe 33, a base plate 35, suction cups 37, and an air extraction mechanism. The air extraction mechanism is used to create a negative pressure inside the suction cups 37 to achieve adsorption and fixation of the raw material. Several suction cups 37 are installed at the lower end of the base plate 35. The pressure relief pipe 33 is connected to the piston cylinder 28. One end of the air extraction pipe 32 is connected to the piston cylinder, and the other end is provided with several branch pipes. The ends of the branch pipes are respectively connected to the corresponding suction cups 37.

[0035] The air extraction mechanism includes a first support plate 15, a first electric push rod 16, a second support plate 17, a first wedge block 18, a second wedge block 19, a limiting block 20, a limiting groove 21, a third wedge block 22, a first sliding groove 23, a mounting block 24, a connecting rod 25, a second sliding groove 26, a second slider 27, a piston 29, a piston rod 30, a spring 31, a third slider 38, and a rotating shaft 39.

[0036] The second support plate 17 is installed below the first support plate 15. The first slide groove 23 and the second slide groove 26 are respectively installed on the first support plate 15 and the second support plate 17. The third slider 38 and the second slider 27 slide in the first slide groove 23 and the second slide groove 26 respectively. The first wedge block 18 is fixedly connected to the side wall of the first electric push rod 16. The limiting groove 21 is set at the bottom of the first slide groove 23. The second wedge block 19 is fixedly connected to the limiting block 20. The limiting block 20 slides in the limiting groove 21. The third wedge block 22 is fixedly connected to the side wall of the third slider 38. One wedge surface of the second wedge block 19 is opposite to the wedge surface of the first wedge block 18, and the other wedge surface is opposite to the wedge surface of the third wedge block 22.

[0037] Two sets of mounting blocks 24 are respectively mounted on the second slider 27 and the third slider 38. The rotating shaft 39 is installed between the two mounting blocks 24. The connecting rod 25 is rotatably connected to the two rotating shafts 39. The second slider 27 is fixedly connected to the piston rod 30. The piston rod 30 is fixedly connected to the piston 29. The piston 29 slides inside the piston cylinder 28. The spring 31 is arranged around the piston rod 30, with one end fixedly connected to the piston 29 and the other end fixedly connected to the inner wall of the piston cylinder 28.

[0038] The first support plate 15 is installed below the first slider 13, the first electric push rod 16 is installed below the first slider 13 and between the two first support plates 15, the second support plate 17 has an installation cavity on the side away from the first support plate 15, the piston cylinder 28 is installed in the installation cavity, the second electric push rod 34 is installed below the second slider 27, and the telescopic end of the second electric push rod 34 is fixedly connected to the middle of the seat plate 35.

[0039] Both sides of the protective cover 10 are equipped with adsorption clamping components.

[0040] In this embodiment, the two elevator component materials to be spot-welded are placed below the adsorption clamping assembly, as shown in the specific structure below. Figure 1As shown, the second electric push rod 34 is activated, which drives the seat plates 35 on both sides of the protective cover 10 to extend downward, so that the multiple sets of suction cups 37 assembled at the bottom of the seat plate 35 adhere to the surface of the original material. Then, the first electric push rod 16 is driven to extend downward, driving the laser head 36 to descend, and completing the pulse spot welding operation between the plates.

[0041] Furthermore, during the downward feeding process of the first electric push rod 16, the wedge surface of the first wedge block 18 gradually abuts against and squeezes the mating wedge surface of the second wedge block 19. The second wedge block 19 slides forward along the limiting groove 21 with the help of the limiting block 20. Its other wedge surface moves forward synchronously and presses against the third wedge block 22. Under the squeezing force of the wedge surface, the third slider 38 slides upward and pulls the second slider 27 and piston rod 30 backward through the connecting rod 25, driving the piston 29 to move backward along the inside of the piston cylinder 28. The air is drawn out of the cavity of the suction cup 37 through the air extraction pipe 32 and its branch pipe, so that a negative pressure is formed inside the suction cup 37, which tightly adsorbs and fixes the two elevator parts materials.

[0042] Furthermore, in this embodiment, multiple sets of suction cups 37 are used to simultaneously apply negative pressure to two elevator plates to be spot welded. The uniform negative pressure throughout the entire area continuously pulls and adheres the plates, eliminating the suspended areas and overlapping gaps of the plates, achieving adsorption clamping and automatic alignment. At the same time, the adsorption force can also offset the thermal expansion and contraction stress generated by spot welding, thereby avoiding the arching and wavy deformation of the plates around the weld point while achieving adsorption alignment.

[0043] Example 2

[0044] Reference Figures 1-2 The smoke prevention component includes an exhaust gas box 6, a smoke pump 7, an air inlet pipe 8, an air outlet pipe 9, and a protective cover 10. The protective cover 10 is set between two second support plates 17. A laser head 36 is fixedly connected to the telescopic end of the first electric push rod 16. The exhaust gas box 6 and the smoke pump 7 are connected through the air outlet pipe 9. The smoke pump 7 and the protective cover 10 are connected through the air inlet pipe 8. The smoke pump 7 is installed on the side wall of the exhaust gas box 6.

[0045] The sliding assembly includes a sliding plate 2, a sliding groove 3, a mounting base 4, a roller 5, a slide rail 11, a screw 12, a first slider 13, and a motor 14.

[0046] The sliding plate 2 is mounted on the bracket 1, the sliding groove 3 is set on the side wall of the sliding plate 2, the roller 5 is rotatably connected to the side of the mounting base 4 via a rotating shaft, the roller 5 rolls in the sliding groove 3, and the exhaust gas box 6 is mounted above the mounting base 4.

[0047] The slide rail 11 is installed on the side of the smoke pump 7, the screw 12 is rotatably connected between the two ends of the slide rail 11, the first slider 13 slides on the screw 12, and the output shaft of the motor 14 is fixedly connected to the right end of the screw 12.

[0048] In this embodiment, an external drive component can be used to drive the mounting base 4 to roll along the sliding plate 2, thereby driving the adsorption clamping component to achieve lateral position adjustment. The motor 14 drives the screw 12 to rotate, causing the first slider 13 to slide along the screw 12 axially, thereby driving the adsorption clamping component to complete vertical position adjustment.

[0049] In Embodiment 1, after the laser head 36 completes a spot welding operation, the vertical position of the adsorption clamping assembly can be adjusted by the motor 14 to switch to the next welding point for further processing.

[0050] Furthermore, when the laser head 36 performs welding operations on the elevator component materials, the fume extraction pump 7 is started simultaneously. Under the protection of the protective cover 10, the welding fumes are drawn in through the air inlet pipe 8 and then transported to the waste gas box 6 for centralized collection and treatment through the air outlet pipe 9.

[0051] In this embodiment, the sliding assembly can achieve large-range lateral displacement and fine-tuning of vertical weld points. Laterally, the sliding plate 2 and roller 5 drive the entire machine to move horizontally, and vertically, the motor 14 drives the screw 12 to drive the first slider 13. The protective cover 10 is symmetrically arranged with adsorption clamping assemblies on both sides, which can synchronously follow the overall displacement of the sliding assembly. It can be adapted to the straight segmented spot welding of long strip plates of car walls and door frames. During the processing, the plate is always kept under uniform negative pressure constraint. After completing a spot welding position, it is reset to release the pressure of the piston cylinder 28, which prepares for the next weld point. This realizes the centering and calibration cycle of the next weld point after each welding, completing the closed loop. Furthermore, the protective cover 10 completely encloses the spot welding processing area. During welding operations, the fume extraction pump 7 is started simultaneously, and the fumes are collected into the exhaust gas box 6 through the air inlet pipe 8 and the air outlet pipe 9. A closed micro-negative pressure circulation is formed inside the protective cover 10. On the one hand, it quickly removes high-temperature welding slag and metal spatter, preventing the transmission mechanisms such as the suction cup 37, the first wedge block 18, the second wedge block 19, the third wedge block 22, and the piston cylinder 28 from being blocked and worn by the slag, thus extending the service life of the entire clamping mechanism. On the other hand, the negative pressure inside the cavity can assist the suction cup 37 in clamping the plate. Under the action of the double negative pressure, the small overlap gap of the plate is further eliminated, while the heat of the weld point is quickly removed and the heat-affected zone is reduced. In this way, the deformation of the weld point can be prevented, and air can be isolated to prevent the stainless steel weld point from oxidizing and turning black.

[0052] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high wear-resistant and deformation-resistant elevator parts processing device, comprising a support frame (1), characterized in that, The bracket (1) is provided with an adsorption clamping assembly, which is used to adsorb and clamp the elevator parts raw materials. The bracket (1) is also provided with a sliding assembly, which is used to drive the adsorption clamping assembly to slide and adjust its position. The bracket (1) is provided with a smoke prevention assembly, which is used to extract the smoke and exhaust gas generated during the processing. The adsorption clamping assembly includes a piston cylinder (28), an air extraction pipe (32), a pressure relief pipe (33), a seat plate (35), a suction cup (37), and an air extraction mechanism. The air extraction mechanism is used to create a negative pressure inside the suction cup (37) to achieve adsorption and fixation of the raw material. Several suction cups (37) are installed at the lower end of the seat plate (35). The pressure relief pipe (33) is connected to the piston cylinder (28). One end of the air extraction pipe (32) is connected to the piston cylinder, and the other end is provided with several branch pipes. The ends of the branch pipes are respectively connected to the corresponding suction cups (37).

2. The high wear-resistant and deformation-resistant elevator parts processing device according to claim 1, characterized in that, The air extraction mechanism includes a first support plate (15), a first electric push rod (16), a second support plate (17), a first wedge block (18), a second wedge block (19), a limiting block (20), a limiting groove (21), a third wedge block (22), a first sliding groove (23), a mounting block (24), a connecting rod (25), a second sliding groove (26), a second slider (27), a piston (29), a piston rod (30), a spring (31), a third slider (38), and a rotating shaft (39).

3. The high wear-resistant and deformation-resistant elevator parts processing device according to claim 2, characterized in that, The second support plate (17) is installed below the first support plate (15). The first slide groove (23) and the second slide groove (26) are respectively installed on the first support plate (15) and the second support plate (17). The third slider (38) and the second slider (27) slide in the first slide groove (23) and the second slide groove (26) respectively. The first wedge block (18) is fixedly connected to the side wall of the first electric push rod (16). The limiting groove (21) is set at the bottom of the first slide groove (23). The second wedge block (19) is fixedly connected to the limiting block (20). The limiting block (20) slides in the limiting groove (21). The third wedge block (22) is fixedly connected to the side wall of the third slider (38). One end of the second wedge block (19) is opposite to the wedge end of the first wedge block (18), and the other end is opposite to the wedge end of the third wedge block (22).

4. The high wear-resistant and deformation-resistant elevator parts processing device according to claim 3, characterized in that, The two sets of mounting blocks (24) are respectively mounted on the second slider (27) and the third slider (38). The rotating shaft (39) is mounted between the two mounting blocks (24). The connecting rod (25) is rotatably connected to the two rotating shafts (39). The second slider (27) is fixedly connected to the piston rod (30). The piston rod (30) is fixedly connected to the piston (29). The piston (29) slides inside the piston cylinder (28). The spring (31) is arranged around the piston rod (30), and one end is fixedly connected to the piston (29), and the other end is fixedly connected to the inner wall of the piston cylinder (28).

5. The high wear-resistant and deformation-resistant elevator parts processing device according to claim 2, characterized in that, The smoke prevention assembly includes a waste gas box (6), a smoke pump (7), an air inlet pipe (8), an air outlet pipe (9), and a protective cover (10). The protective cover (10) is set between two second support plates (17). A laser head (36) is fixedly connected to the telescopic end of the first electric push rod (16). The waste gas box (6) and the smoke pump (7) are connected through the air outlet pipe (9). The smoke pump (7) and the protective cover (10) are connected through the air inlet pipe (8). The smoke pump (7) is installed on the side wall of the waste gas box (6).

6. The high wear-resistant and deformation-resistant elevator parts processing device according to claim 5, characterized in that, The sliding assembly includes a sliding plate (2), a sliding groove (3), a mounting base (4), a roller (5), a slide rail (11), a screw (12), a first slider (13), and a motor (14).

7. The high wear-resistant and deformation-resistant elevator parts processing device according to claim 6, characterized in that, The sliding plate (2) is mounted on the bracket (1), the sliding groove (3) is set on the side wall of the sliding plate (2), the roller (5) is rotatably connected to the side of the mounting base (4) via a rotating shaft, the roller (5) rolls in the sliding groove (3), and the exhaust gas box (6) is mounted above the mounting base (4).

8. The high wear-resistant and deformation-resistant elevator parts processing device according to claim 7, characterized in that, The slide rail (11) is installed on the side of the smoke pump (7), the screw (12) is rotatably connected between the two ends of the slide rail (11), the first slider (13) slides on the screw (12), and the output shaft of the motor (14) is fixedly connected to the right end of the screw (12).

9. The high wear-resistant and deformation-resistant elevator parts processing device according to claim 6, characterized in that, The first support plate (15) is installed below the first slider (13), the first electric push rod (16) is installed below the first slider (13) and between the two first support plates (15), the second support plate (17) has an installation cavity on the side away from the first support plate (15), the piston cylinder (28) is installed in the installation cavity, the second electric push rod (34) is installed below the second slider (27), and the telescopic end of the second electric push rod (34) is fixedly connected to the middle of the seat plate (35).

10. A high wear-resistant and deformation-resistant elevator parts processing device according to claim 5, characterized in that, The protective cover (10) is equipped with adsorption clamping components on both sides.

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