Lamp strip wire drawing mechanism

Abstract

The utility model provides a lamp strip wire drawing mechanism, relates to the technical field of rubber-insulated wire lamps, and aims to solve the technical problem that rubber-insulated wire lamp production equipment in the prior art cannot lead out a left lamp strip and a right lamp strip of a lamp holder from the whole lamp strip. A lamp strip wire pulling mechanism comprises a base table, a driving assembly, a wire releasing assembly, a wire pulling assembly and a plurality of limiting columns, the driving assembly and the wire pulling assembly are both connected with the base table, the limiting columns are distributed on the base table at intervals and driven by the driving assembly to intermittently move in the distribution direction of the limiting columns, and each limiting column is provided with the limiting assembly. The wire pulling assembly comprises a first motor and a wire pulling column, the first motor is connected with the base table and drives the wire pulling column to move in a reciprocating mode, the moving direction of the wire pulling column is perpendicular to the moving direction of the limiting columns, and the wire pulling column is vertically arranged and moves between the two limiting columns. And after the multiple limiting columns intermittently move once, the to-be-pulled wire lamp strip is located on the moving path of the wire pulling column.

Description

Technical Field

[0001] The utility model relates to the technical field of flexible strip lights, and particularly to a strip light pulling mechanism. Background Art

[0002] The flexible strip light includes a main strip light, a plurality of sub-strip lights and a plurality of lamp heads. When the flexible strip light is straightened, the plurality of sub-strip lights are arranged perpendicular to the main strip light and distributed along the length direction of the main strip light, and one lamp head is connected in series on each sub-strip light. Among them, two main conductors are arranged in the main strip light, and two sub-conductors are also arranged in the sub-strip light. The lamp head is connected in series on the two sub-conductors. In production, it is necessary to first break the skin of the main strip light to expose the main conductors, then connect the two sub-conductors of the sub-strip light to the two main conductors of the main strip light respectively, and then wrap them, so the production is relatively troublesome. Compared with the above flexible strip light, a new type of flexible strip light structure can significantly improve the production efficiency, and its specific structure is as follows: two conductors are arranged in the strip light, and a plurality of lamp heads are connected in series on the two conductors. The strip lights on the left and right sides of the lamp head are pulled out and bent, which is equivalent to the above sub-strip lights, and the strip lights of the other unbent parts are equivalent to the above main strip light, and then the pulled-out sub-strip lights are fixed with a sleeve. The first step of producing the above new type of flexible strip light is to pull out the strip lights on the left and right sides of the lamp head from the whole strip light through pulling, and the existing flexible strip light production equipment cannot carry out the above production. Summary of the Utility Model

[0003] Aiming at the deficiencies of the prior art, the purpose of the utility model is to provide a strip light pulling mechanism to solve the technical problem that the existing flexible strip light production equipment cannot pull out the strip lights on the left and right sides of the lamp head from the whole strip light.

[0004] To solve the above technical problem, the utility model provides a strip light pulling mechanism, which includes a base, a driving component, a wire releasing component, a pulling component and a plurality of limiting columns. The driving component and the pulling component are both connected to the base. The plurality of limiting columns are spaced apart on the base and are driven by the driving component to intermittently move along their distribution direction. A limiting component for fixing the strip light is arranged on each limiting column. The pulling component includes a first motor and a pulling column. The first motor is connected to the base and drives the pulling column to reciprocate. The moving direction of the pulling column is perpendicular to the moving direction of the limiting column. The pulling column is vertically arranged and moves between two of the limiting columns. The wire releasing component includes a turntable around which the strip light to be pulled is wound. After the plurality of limiting columns intermittently move once, the strip light to be pulled is located on the moving path of the pulling column.

[0005] After adopting the above structure, the strip light pulling mechanism of the utility model has the following advantages: The strip light wound on the turntable is fixed on the limiting column adjacent to the pulling column. After each intermittent movement of the limiting column, the strip light to be pulled is located on the moving path of the pulling column and is thus pulled out by the pulling column, so it can be used for the production of the new type of flexible strip light.

[0006] As an improvement, the driving assembly includes a second motor, a chain, and two sprockets. The two sprockets are rotatably connected to the top of the base. The second motor is connected to the base and drives one of the sprockets to rotate. The chain is wound around the two sprockets. A connecting block is connected to the outside of each link of the chain. Each connecting block is connected to two spaced-apart limiting posts. A number of limiting posts are circumferentially spaced apart; with this structure, the annular closed structure formed by the chain enables the connecting blocks and the limiting posts connected to the links to also form an annular structure. As the chain moves, the recycling of the limiting posts can be realized.

[0007] As an improvement, a positioning block is connected to the base between the two sprockets. The positioning block is provided with a positioning groove for a part of the connecting block to pass through. A number of connecting blocks located in the positioning groove are slidably connected to the positioning block; with this structure, the positioning block and the positioning groove play a role in positioning and guiding the connecting blocks between the two sprockets, preventing the position deviation of the connecting blocks caused by the slack of the chain.

[0008] As an improvement, the wire pay-off assembly further includes a third motor, a vertical frame, a slider, a guide post, a detection piece, a wire passing wheel, an upper sensor, and a lower sensor. The turntable is rotatably connected to the vertical frame and the rotation axis is horizontally arranged. The third motor is connected to the vertical frame and drives the turntable to rotate. The guide post is vertically connected to the vertical frame. The wire passing wheel is slidably connected to the guide post along the vertical direction through the slider. The detection piece is connected to the slider. The wire passing wheel is rotatably connected to the slider. The rotation axis of the wire passing wheel is parallel to the rotation axis of the turntable. The wire strip to be pulled on the turntable extends downward around the wire passing wheel and then extends upward to the limiting posts. The upper sensor and the lower sensor are both connected to the vertical frame. The upper sensor is used to detect the upward position of the detection piece, and the lower sensor is used to detect the downward position of the detection piece. The upper sensor and the lower sensor are both electrically connected to the third motor; with this structure, when the lower sensor detects the detection piece, that is, when the wire passing wheel is in the lower position, the third motor does not drive the turntable to rotate at this time. As the wire pulling post pulls the wire and the limiting posts drive the wire strip to move forward, the wire strip to be pulled between the limiting posts and the turntable becomes shorter, driving the wire passing wheel to move upward. After the upper sensor detects the detection piece, it means that the wire passing wheel is in the upper position and the turntable needs to supply wire. At this time, the third motor controls the turntable to rotate and pay off the wire. The wire strip to be pulled between the limiting posts and the turntable becomes longer, and the wire passing wheel moves downward until the lower sensor detects the detection piece, and the third motor stops driving the turntable to rotate. Repeating this process can realize the automatic wire pay-off of the wire strip.

[0009] As an improvement, the frame is located on the front side of the base, and the wire-releasing assembly also includes a first fixed pulley, a second fixed pulley and a third fixed pulley. The first fixed pulley and the second fixed pulley are both rotatably connected to the frame and their rotation axes are parallel to the rotation axis of the turntable. The first fixed pulley and the second fixed pulley are both higher than the wire-passing wheel. The third fixed pulley is rotatably connected to the base and its rotation axis is vertically arranged. The light strip to be pulled on the turntable is sequentially wound around the first fixed pulley, the wire-passing wheel, the second fixed pulley and the third fixed pulley and then extends to the limiting column. With this structure, by setting the first fixed pulley, the second fixed pulley and the third fixed pulley, not only the extension direction of the light strip to be pulled can be changed, but also the light strip to be pulled can be placed in a tensioned state and not in contact with other irrelevant structures, thereby ensuring the normal movement of the wire-passing wheel and thus ensuring normal wire-releasing.

[0010] As an improvement, the wire-releasing assembly also includes a hollow guide tube, which is arranged between the third fixed pulley and the limit column. The length direction of the guide tube is arranged perpendicular to the moving direction of the limit column. After the light strip to be pulled bypasses the third fixed pulley, it extends to the limit column through the guide tube. With this structure, the guide tube guides the light strip to be pulled, so that the position and moving direction of the light strip to be pulled are accurate, ensuring that the pulling column can accurately pull the light strip to be pulled.

[0011] As an improvement, the wire-releasing assembly also includes a first cylinder and a wire clamp, the first cylinder is connected to the vertical frame and drives the wire clamp to clamp or loosen the light strip to be pulled, and the wire clamp is located between the second fixed pulley and the third fixed pulley; with this structure, when the wire pulling column and the limit column stop moving, the wire clamp clamps the light strip to be pulled to prevent the wire passing wheel from moving downward and pulling back the light strip near the wire pulling column and the limit column when the turntable releases the wire.

[0012] As an improvement, the limit assembly includes a movable column and a return spring, the movable column is vertically movably connected in the limit column, the outer peripheral wall of the upper end and the outer peripheral wall of the lower end of the movable column are both provided with annular protrusions along the circumferential direction, and a return spring for driving the movable column to move downward is provided between the annular protrusion located at the bottom and the limit column, the annular protrusion located at the top and the top of the limit column are used to clamp the light strip, and a second cylinder is connected to the base, the second cylinder is connected to a driving block and drives the driving block to reciprocate vertically, and the driving block is located under the movable column with two limit columns with a wire pulling column passing through the middle and drives the two movable columns to move upward; with this structure, after the two limit columns move once, the second cylinder drives the two movable columns to move upward, and under the pulling action of the wire pulling column on the light strip, the light strip is stuck between the annular protrusion located at the top and the limit column, and after the wire pulling column completes the wire pulling, the second cylinder is reset, and the return spring also resets the movable column to fix the light strip. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0014] Figure 2 forFigure 1 Partial enlarged view of part A.

[0015] Figure 3 Schematic diagram of the three-dimensional structure of the present utility model from another angle.

[0016] Figure 4 is Figure 3 Partial enlarged view of part B.

[0017] Figure 5 Schematic diagram of the three-dimensional structure of the wire pay-off assembly in the present utility model.

[0018] Figure 6 Schematic diagram of the connection structure between the light strip and the limit post in the initial state of the present utility model.

[0019] Figure 7 Schematic diagram of the connection structure between the light strip and the limit post after the limit post moves once in the present utility model.

[0020] Reference numerals: 1, base; 2, drive assembly; 22, chain; 23, sprocket; 3, wire pay-off assembly; 31, turntable; 32, third motor; 33, vertical frame; 34, slider; 35, guide post; 36, detection piece; 37, wire passing wheel; 38, upper sensor; 39, lower sensor; 310, first fixed pulley; 311, second fixed pulley; 312, third fixed pulley; 313, guide tube; 314, first cylinder; 315, wire clamp; 4, wire pulling assembly; 41, first motor; 42, wire pulling post; 5, limit post; 6, limit assembly; 61, movable post; 62, return spring; 7, connecting block; 8, positioning block; 9, positioning groove; 10, annular convex part; 11, second cylinder; 12, drive block. Detailed Description of the Invention

[0021] The following will describe in detail a light strip wire pulling mechanism of the present utility model with reference to the accompanying drawings.

[0022] As Figures 1 to 5 shown, a light strip wire pulling mechanism includes a base 1, a drive assembly 2, a wire pay-off assembly 3, a wire pulling assembly 4 and a plurality of limit posts 5. The drive assembly 2 and the wire pulling assembly 4 are both connected to the base 1. The plurality of limit posts 5 are spaced apart on the base 1 and are driven by the drive assembly 2 to intermittently move along their distribution direction; As Figure 1 and Figure 2As shown in the figure, the driving assembly 2 includes a second motor, a chain 22, and two sprockets 23. The two sprockets 23 are rotatably connected to the top end of the base 1. The second motor is connected to the base 1 and drives one of the sprockets 23 to rotate. The chain 22 is wound around the two sprockets 23. A connecting block 7 is connected to the outside of each link of the chain 22, so that the connecting blocks 7 are circumferentially distributed in a ring along the chain 22. Each connecting block 7 is connected to two spaced-apart limiting posts 5, and a number of limiting posts 5 are circumferentially spaced apart, that is, a number of limiting posts 5 are also circumferentially and annularly spaced apart along the chain 22. The chain 22 has a straight portion and an arc portion. Correspondingly, the distribution of the limiting posts 5 at different positions of the chain 22 is also divided into straight-line spaced distribution and arc-separated distribution. The moving direction of the limiting posts 5 in the straight-line spaced distribution is also a straight line direction, and the moving direction of the limiting posts 5 in the arc-separated distribution is also an arc direction. The wire-pulling operation is performed at the limiting posts 5 in the straight-line spaced distribution. That is to say, the moving direction of the limiting posts 5 where the wire-pulling operation is performed is a straight line direction, which is the front-back direction in this embodiment.

[0023] As Figure 2 shown in the figure, the wire-pulling assembly 4 includes a first motor 41 and a wire-pulling post 42. The first motor 41 is connected to the base 1 and drives the wire-pulling post 42 to reciprocate. Specifically, the first motor 41 realizes the reciprocating movement of the wire-pulling post 42 through structures such as a lead screw and a guide rail. The moving direction of the wire-pulling post 42 is perpendicular to the moving direction of the limiting posts 5. In this embodiment, the wire-pulling post 42 moves along the left-right direction. The wire-pulling post 42 is vertically arranged and moves between two of the limiting posts 5. The wire-releasing assembly 3 includes a turntable 31 around which a wire-to-be-pulled light strip is wound. After a number of limiting posts 5 move intermittently once, the wire-to-be-pulled light strip is located on the moving path of the wire-pulling post 42. The wire-pulling post 42 moves to the right to pull out the light strip outside.

[0024] As Figure 2 shown in the figure, a positioning block 8 is connected to the base 1 between the two sprockets 23. A positioning groove 9 for a part of the connecting block 7 to pass through is provided on the positioning block 8. A number of connecting blocks 7 located in the positioning groove 9 are slidably connected to the positioning block 8. That is to say, for the connecting blocks 7 distributed in a straight-line interval, a part of the connecting block 7 slides back and forth in the positioning groove 9, thereby restricting the position offset of the connecting block 7 in the left-right direction.

[0025] As Figure 5As shown, the pay-off assembly 3 also includes a third motor 32, a stand 33, a slider 34, a guide post 35, a detection sheet 36, a wire wheel 37, an upper sensor 38, a lower sensor 39, a first fixed pulley 310, a second fixed pulley 311, a third fixed pulley 312, a hollow guide tube 313, a first cylinder 314 and a wire clamp 315. The turntable 31 is rotatably connected to the stand 33 and the rotation axis is horizontally arranged. The third motor 32 is connected to the stand 33 and drives the turntable 31 to rotate. The guide post 35 is vertically connected to the stand 33. The wire wheel 37 is vertically slidably connected to the guide post 35 through the slider 34. The detection piece 36 is connected to the slider 34, and the wire wheel 37 is rotationally connected to the slider 34. The rotation axis of the wire wheel 37 is parallel to the rotation axis of the turntable 31. The wire-pulling light strip on the turntable 31 passes downward around the wire wheel 37 and then extends upward to the limit column 5. The upper sensor 38 and the lower sensor 39 are both connected to the stand 33. The upper sensor 38 is used to detect the upward position of the detection piece 36, and the lower sensor 39 is used to detect the downward position of the detection piece 36. The upper sensor 38 and the lower sensor 39 are both metal proximity switches, and the upper sensor 38 and the lower sensor 39 are both electrically connected to the third motor 32.

[0026] In addition, the stand 33 is located at the front side of the base 1, the first fixed pulley 310 and the second fixed pulley 311 are both rotatably connected to the stand 33 and the rotation axis is parallel to the rotation axis of the turntable 31, the first fixed pulley 310 and the second fixed pulley 311 are both higher than the wire wheel 37, that is, higher than the maximum height of the wire wheel 37, the third fixed pulley 312 is rotatably connected to the base 1 and the rotation axis is vertically arranged, and the light strip to be pulled on the turntable 31 is sequentially connected with the first fixed pulley 310, the wire wheel 37, the second fixed pulley 311, and the third fixed pulley 312 and then extends to the limit column 5. Specifically, The light strip to be pulled is first led out from the turntable 31, goes around the first fixed pulley 310 upward, then goes around the wire wheel 37 downward, then goes around the second fixed pulley 311 upward, then goes around the third fixed pulley 312 in the front-back direction, and changes to the left-right direction after going around the third fixed pulley 312; the guide tube 313 is arranged between the third fixed pulley 312 and the limit column 5, and the length direction of the guide tube 313 is arranged perpendicular to the moving direction of the limit column 5, and the length direction of the guide tube 313 is the left-right direction, and the light strip to be pulled extends to the limit column 5 through the guide tube 313 after going around the third fixed pulley 312. The first cylinder 314 is connected to the stand 33 and drives the wire clamp 315 to clamp or release the light strip to be pulled, and the wire clamp 315 is located between the second fixed pulley 311 and the third fixed pulley 312.

[0027] like Figure 2 and Figure 4As shown, a limiting component 6 for fixing the light strip is provided on each limiting post 5. The limiting component 6 includes a movable post 61 and a return spring 62. The movable post 61 is vertically movably connected within the limiting post 5. In this embodiment, the limiting posts 5 are all connected to the connecting block 7. Therefore, the movable post 61 is also vertically movably connected to the connecting block 7. The upper and lower ends of the movable post 61 respectively protrude above the limiting post 5 and below the connecting block 7. Annular convex portions 10 are provided along the circumferential direction on the outer peripheral walls of the upper and lower ends of the movable post 61. A return spring 62 for driving the movable post 61 to move downward is provided between the annular convex portion 10 located below and the limiting post 5. Specifically, the return spring 62 abuts between the connecting block 7 and the annular convex portion 10 located below. The annular convex portion 10 located above and the top of the limiting post 5 are used to clamp the light strip. A second air cylinder 11 is connected to the base 1. The second air cylinder 11 is connected to a driving block 12 and drives the driving block 12 to move vertically back and forth. The driving block 12 is located below the movable posts 61 of the two limiting posts 5 through which the wire-pulling post 42 passes in the middle and drives the two movable posts 61 to move upward.

[0028] In the initial state, as Figure 6 shown ( Figure 6 the orientation of Figure 7 is based on the orientation noted in Figure 1 , that is, Figure 6 and Figure 7 the left and right in the figure are the actual front and back directions, and the up and down in the figure are the actual left and right directions), after the leading end of the wire-pulling light strip is fixed along the left and right direction on the rear side of the limiting post 5 under the guiding action of the guiding tube 313, the wire-pulling post 42 passes through between this limiting post 5 and the limiting post 5 located behind it; as Figure 7 shown, the driving component 2 drives the chain 22 to move, and the moving distance is the center distance between two adjacent limiting posts 5. The connecting block 7 at the leading end of the wire-pulling light strip moves backward, so that the leading end part of the wire-pulling light strip is arranged along the front and back direction and is located on the moving path of the wire-pulling post 42. At this time, the wire-pulling post 42 is located on the left side of this part of the light strip, and the second air cylinder 11 drives the driving block 12 and the two movable posts 61 to move upward. Then, the wire-pulling post 42 moves to the right to pull this part of the light strip out to the outside. After the second air cylinder 11 is reset, the light strip can be clamped by the annular convex portion 10 and the limiting post 5; then the above actions are cycled. After each intermittent movement of the limiting post 5, the wire-pulling light strip is located on the moving path of the wire-pulling post 42 and is thus pulled out by the wire-pulling post 42, so that it can be used for the production of the new type of leather wire lamp. In addition, a third air cylinder is also connected to the base 1. The third air cylinder drives the baffle to move left and right. The baffle is located behind the limiting post 5 at the rear among the two limiting posts 5 through which the wire-pulling post 42 passes in the middle. When the movable post 61 of this limiting post 5 rises, the third air cylinder drives the baffle to be located behind it to prevent the light strip from slipping out between the annular convex portion 10 and the limiting post 5. After the movable post 61 descends, the third air cylinder drives the baffle to reset so that the baffle leaves the moving path of the limiting post 5.

[0029] The embodiments of the present utility model have been described in detail above in conjunction with the accompanying drawings. However, the present utility model is not limited to the above-mentioned one embodiment. All other embodiments obtained by those skilled in the art without creative efforts fall within the scope of protection of the present utility model.

Claims

1. A strip light pulling mechanism, characterized in that It includes a base (1), a driving component (2), a wire paying-off component (3), a wire pulling component (4) and a number of limiting posts (5). The driving component (2) and the wire pulling component (4) are both connected to the base (1). A number of the limiting posts (5) are spaced apart on the base (1) and are driven by the driving component (2) to intermittently move along their distribution direction. A limiting component (6) for fixing a light strip is provided on each of the limiting posts (5). The wire pulling component (4) includes a first motor (41) and a wire pulling post (42). The first motor (41) is connected to the base (1) and drives the wire pulling post (42) to reciprocate. The moving direction of the wire pulling post (42) is perpendicular to the moving direction of the limiting posts (5). The wire pulling post (42) is vertically arranged and moves between two of the limiting posts (5). The wire paying-off component (3) includes a turntable (31) around which a light strip to be pulled is wound. After the number of the limiting posts (5) intermittently move once, the light strip to be pulled is located on the moving path of the wire pulling post (42).

2. The strip light wire-pulling mechanism according to claim 1, wherein The driving component (2) includes a second motor, a chain (22) and two sprockets (23). The two sprockets (23) are rotatably connected to the top of the base (1). The second motor is connected to the base (1) and drives one of the sprockets (23) to rotate. The chain (22) is wound around the two sprockets (23). A connecting block (7) is connected to the outside of each link of the chain (22). Each connecting block (7) is connected to two spaced-apart limiting posts (5). A number of the limiting posts (5) are circumferentially spaced apart.

3. The strip light wire pulling mechanism according to claim 2, characterized in that, A positioning block (8) is connected to the base (1) between the two sprockets (23). A positioning groove (9) for a part of the connecting block (7) to pass through is provided on the positioning block (8). A number of the connecting blocks (7) located in the positioning groove (9) are slidably connected to the positioning block (8).

4. The strip light wire-pulling mechanism according to claim 1, wherein The wire pay-off assembly (3) further includes a third motor (32), a vertical frame (33), a slider (34), a guide post (35), a detection piece (36), a wire passing wheel (37), an upper sensor (38) and a lower sensor (39). The turntable (31) is rotatably connected to the vertical frame (33) with its rotation axis horizontally arranged. The third motor (32) is connected to the vertical frame (33) and drives the turntable (31) to rotate. The guide post (35) is vertically connected to the vertical frame (33). The wire passing wheel (37) is vertically slidably connected to the guide post (35) through the slider (34). The detection piece (36) is connected to the slider (34). The wire passing wheel (37) is rotatably connected to the slider (34). The rotation axis of the wire passing wheel (37) is parallel to the rotation axis of the turntable (31). The wire of the light strip to be pulled on the turntable (31) extends downward around the wire passing wheel (37) and then upward to the limit post (5). The upper sensor (38) and the lower sensor (39) are both connected to the vertical frame (33). The upper sensor (38) is used to detect the upward position of the detection piece (36), and the lower sensor (39) is used to detect the downward position of the detection piece (36). The upper sensor (38) and the lower sensor (39) are both electrically connected to the third motor (32).

5. The wire-pulling mechanism of the light strip according to claim 4, characterized in that, The vertical frame (33) is located on the front side of the base (1). The wire pay-off assembly (3) further includes a first fixed pulley (310), a second fixed pulley (311) and a third fixed pulley (312). The first fixed pulley (310) and the second fixed pulley (311) are both rotatably connected to the vertical frame (33) with their rotation axes parallel to the rotation axis of the turntable (31). The first fixed pulley (310) and the second fixed pulley (311) are both higher than the wire passing wheel (37). The third fixed pulley (312) is rotatably connected to the base (1) with its rotation axis vertically arranged. The wire of the light strip to be pulled on the turntable (31) sequentially winds around the first fixed pulley (310), the wire passing wheel (37), the second fixed pulley (311), the third fixed pulley (312) and then extends to the limit post (5).

6. The light strip pulling wire mechanism according to claim 5, characterized in that, The wire pay-off assembly (3) further includes a hollow guide tube (313). The guide tube (313) is arranged between the third fixed pulley (312) and the limit post (5). The length direction of the guide tube (313) is arranged perpendicular to the moving direction of the limit post (5). The wire of the light strip to be pulled extends to the limit post (5) through the guide tube (313) after winding around the third fixed pulley (312).

7. The wire-pulling mechanism of the light strip according to claim 5, characterized in that, The wire pay-off assembly (3) further includes a first air cylinder (314) and a wire clamp (315). The first air cylinder (314) is connected to the vertical frame (33) and drives the wire clamp (315) to clamp or loosen the wire of the light strip to be pulled. The wire clamp (315) is located between the second fixed pulley (311) and the third fixed pulley (312).

8. The strip light wire-pulling mechanism according to claim 1, characterized in that, The limiting component (6) includes a movable column (61) and a return spring (62). The movable column (61) is movably connected vertically within the limiting column (5). Ring convex portions (10) are provided circumferentially on the outer peripheral walls of the upper end and the lower end of the movable column (61). A return spring (62) for driving the movable column (61) to move downward is provided between the ring convex portion (10) located below and the limiting column (5). The ring convex portion (10) located above and the top of the limiting column (5) are used to clamp the light strip. A second air cylinder (11) is connected to the base (1). The second air cylinder (11) is connected to a driving block (12) and drives the driving block (12) to reciprocate vertically. The driving block (12) is located below the movable columns (61) of the two limiting columns (5) through which the cable-pulling column (42) passes in the middle and drives the two movable columns (61) to move upward.

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