Conveying equipment for engine water tank part machining

Abstract

The invention relates to the technical field of special equipment manufacturing industry, and discloses conveying equipment for engine water tank component machining, which comprises a long conveying belt, a large support, a short conveying belt, a reciprocating cleaning mechanism and a centering mechanism, and is provided with the centering mechanism, and two groups of silica gel clamping plates are accurately controlled to synchronously and oppositely move by utilizing reverse threads on two sides of a screw rod; through the linkage design of a pulley rod and a movable plate, a three-point positioning effect is formed in the clamping process, higher positioning precision is provided for the subsequent automatic assembly procedure, the reciprocating sweeping mechanism is arranged and directly integrated with a brush system on a conveying line, and through the double-track design of a long groove and a short groove, the cleaning efficiency is improved. The brush rod is driven by the stepping motor to linearly reciprocate in a certain stroke, the parallelism error of the motion trail is controlled within a small range, namely the pulley mechanisms arranged at the two ends of the long gear plate can eliminate the deflection phenomenon of the brush, the brush can be accurately inserted into an inner hole of the flat tube, the cleaning efficiency is higher than that of a traditional mode, and secondary pollution is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of special equipment manufacturing, more particularly to a conveying device for engine water tank component processing. BACKGROUND

[0002] The water tank flat pipe is a key component connecting the upper and lower water chambers or the left and right water chambers, and its main function is to guide the flow of cooling liquid. The flat pipe is usually made of aluminum strip through processes such as rolling and high-frequency welding to form a hollow tubular shape. The core goal of flat pipe transportation is to prevent damage and maintain cleanliness. The centering link of the existing engine water tank flat pipe conveying mechanism has significant defects. The traditional baffle type positioning device lacks active adjustment capability, and the flat pipe may deviate radially at the transfer belt junction due to speed fluctuations, resulting in cumulative errors of more than ±3mm. The deviation not only causes misalignment in subsequent assembly processes, but also causes indentations and scratches on the pipe surface due to the rigid collision between the hard metal baffle and the aluminum pipe wall, leading to an increase in the rate of defective products. Moreover, different pipe diameter specifications require frequent replacement of positioning fixtures, reducing production efficiency. In the existing cleaning unit, the flat pipe needs to be separated from the production line for air blowing cleaning. 40% of the metal debris remains in the corners of the pipe wall due to adsorption force, resulting in high energy consumption of the air pump and incomplete cleaning, which leads to a higher proportion of after-sales failures. Among them, 80% of the failures are caused by debris blocking the waterway, leading to overheating of the engine. The secondary handling process after offline cleaning is prone to cause new scratches, forming a vicious cycle of "cleaning-damage". SUMMARY

[0003] In order to overcome the above-mentioned defects of the prior art, the present application provides a conveying device for engine water tank component processing to solve the problems in the background art.

[0004] The present application provides the following technical solution: a conveying device for engine water tank component processing, comprising a long conveyor belt, a large support and a short conveyor belt, characterized in that: the top of the large support is fixedly connected with the short conveyor belt, the top of the short conveyor belt is fixedly connected with a fixed rod on one side, the top of the fixed rod is fixedly connected with a shell, the inner bottom of the shell is fixedly connected with a receiving runner in the center, the inner side of the shell and the two sides of the receiving runner are provided with side supports, the inner side of the side support and the top of the receiving runner are rotatably connected with a supporting plate, and the inner side of the side support and the inner side of the shell are provided with springs. Further, the two sides of the short conveyor belt are fixedly connected with side plates two, the side away from the rotating blanking mechanism of the side plate two is fixedly connected with a reciprocating cleaning mechanism through the large support, the side away from the rotating blanking mechanism of the short conveyor belt is vertically provided with a long conveyor belt through the large support, the two sides of the long conveyor belt are fixedly connected with side plates one, and the top of the side plate one is fixedly connected with a centering mechanism.

[0005] Further, the core component flat tube required in the engine water tank is the main pipeline of the cooling liquid flow, and its cleanliness and stability during transportation are very important. The just produced and collected flat tube is placed inside the shell, and under the rotation of the receiving rotating wheel, the flat tube is sequentially clamped in the groove on the receiving rotating wheel, and under the limitation of the supporting plate and the side support, it sequentially enters the groove of the short conveying belt along the angle of rotation, and sequentially moves forward in the conveying of the short conveying belt, moves to the position of the reciprocating cleaning mechanism, cleans the metal debris inside the flat tube through the stepping motor one, and transports the flat tube from the short conveying belt to the long conveying belt through a specific acceleration. After passing through the structure centering mechanism, the centering distance of the flat tube is adjusted.

[0006] Further, the reciprocating cleaning mechanism comprises a bottom plate shell fixedly connected to the top of the large support, a long groove is arranged on the side of the top of the bottom plate shell away from the rotating blanking mechanism, a short groove is arranged on the side of the top of the bottom plate shell and the long groove close to the rotating blanking mechanism, small supports are fixedly connected to the two sides of the top of the bottom plate shell close to the long groove and the short groove, a stepping motor one is arranged on the outer side of any small support, a cleaning rod mechanism is arranged on the inner side of the top of the bottom plate shell and the stepping motor one, and pulley mechanisms are arranged on the inner side of the bottom plate shell and the bottom of the cleaning rod mechanism in the long groove and the short groove respectively.

[0007] Further, a rotating rod is rotatably connected to the inner side of the small support, and a circular gear is fixedly connected to the outer side of the rotating rod close to the stepping motor one.

[0008] Further, the pulley mechanism comprises a circular wheel slidingly connected to the top of the inner side of the long groove, a connecting block is rotatably connected to the inner side of the circular wheel, a bottom cover is arranged on the bottom of the bottom plate shell and the bottom of the connecting block, and a short rod is fixedly connected to the top of the connecting block.

[0009] Further, a connecting rod is fixedly connected to the inner side of the long groove and the top of the short rod, a long gear plate is fixedly connected to the other side top of the connecting rod, and a brush rod is fixedly connected to the other side of the long gear plate.

[0010] Further, the flat tube is stably clamped in the groove of the short conveying belt, when the stepping motor one is started, the stepping motor one drives the rotating rod and the circular gear thereon to rotate together, the circular gear meshes with the long gear plate below in the process of rotation, the long gear plate is fixedly connected with the connecting rod and the pulley mechanism, when the long gear plate moves forward, the connecting rod drives the short rod and the circular wheel to move forward together, the circular wheel slides in the groove of the long groove, timely follows the movement of the connecting rod, and the bottom of the long gear plate is provided with the same pulley mechanism, the circular wheel in the pulley mechanism can also slide in the groove of the short groove, so that the stepping motor one can drive the brush rod to stably move in the straight line direction, and clean the inside of the flat tube to remove the excess metal debris and dust.

[0011] Further, the centering mechanism comprises lower fixed plates fixedly connected at two sides of a top of the side plate, a support plate fixedly connected at a top of the lower fixed plate, upper fixed plates fixedly connected at two sides of the top of the support plate close to the two sides of the lower fixed plate, a side frame fixedly connected at one side of the top of the support plate, a stepping motor two rotatably connected at an outer side of the side frame, a short screw rotatably connected at another side of the side frame, a pulley rod fixedly connected at another side of the short screw, a moving plate provided at the outer side of the pulley rod and a groove of the support plate, a centering frame provided at the top of the support plate and the outer side of the pulley rod, and a silica gel clamp plate fixedly connected at the inner side bottom of the moving plate.

[0012] Further, the flat pipe after cleaning enters the long conveying belt from the short conveying belt, the stepping motor two is started to drive the short screw fixedly connected thereto, the short screw is connected with the pulley rod at another side, the pulley rod is provided with threads in different directions at two sides of the aperture of the support plate, when the pulley rod rotates, the moving plate moves towards the center under the mutual engagement of the threads, and the silica gel clamp plate at the bottom of the upper fixed plate gradually clamps the flat pipe during the movement, so that the flat pipe can be stably placed at the center of the long conveying belt.

[0013] Technical effects and advantages of the present application: 1. The centering mechanism is provided, the reverse threads at two sides of the screw are used for accurately controlling the synchronous movement of the two groups of silica gel clamp plates, the accurate centering correction is completed in a short time, the silica gel material can avoid scratching the pipe wall, the elastic deformation characteristic can adapt to different pipe diameters, the surface damage rate is reduced compared with the traditional hard baffle solution, and the linkage design of the pulley rod and the moving plate forms a three-point positioning effect during clamping, so that the center line of the flat pipe always coincides with the axis of the conveying belt, and higher positioning accuracy is provided for the subsequent automatic assembly process.

[0014] 2. The reciprocating cleaning mechanism is provided, the combination structure of the gear and rack linear transmission and the double-track pulley system is adopted, compared with the traditional offline cleaning process, the mechanism directly integrates the brush system on the conveying line, the double-track design of the long groove and the short groove is adopted, the brush rod is driven by the stepping motor to realize linear reciprocating motion within a certain stroke, the parallel error of the motion track is controlled within a small range, the double-point support structure, i.e. the pulley mechanism arranged at two ends of the long gear plate can eliminate the deflection of the brush, so that the brush rod can be accurately inserted into the inner hole of the flat pipe, the cleaning efficiency is higher than that of the traditional way, and secondary pollution is avoided. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the present application.

[0016] Figure 2 It is a structure schematic view of the rotating blanking mechanism of the present application.

[0017] Figure 3 Figure 1 is a schematic diagram of the back structure of the rotary blanking mechanism of the present application.

[0018] Figure 4 Figure 2 is a schematic diagram of the reciprocating cleaning mechanism structure of the present application.

[0019] Figure 5 Figure 3 is a schematic diagram of the cross-section structure of the reciprocating cleaning mechanism of the present application.

[0020] Figure 6 Figure 4 is a schematic diagram of the cross-section bottom structure of the reciprocating cleaning mechanism of the present application.

[0021] Figure 7 Figure 5 is a schematic diagram of the cogwheel structure of the present application.

[0022] Figure 8 Figure 6 is a schematic diagram of the pulley mechanism structure of the present application.

[0023] Figure 9 Figure 7 is a schematic diagram of the centering mechanism structure of the present application.

[0024] Figure 10 Figure 8 is a schematic diagram of the top view of the centering mechanism structure of the present application.

[0025] The reference signs are: 1, long conveying belt; 101, side plate one; 2, large support; 3, rotary blanking mechanism; 301, shell; 302, side support; 303, receiving runner; 304, fixed rod; 305, supporting plate; 306, spring; 4, reciprocating cleaning mechanism; 401, bottom plate shell; 402, long groove; 403, short groove; 404, cleaning rod mechanism; 4041, brush rod; 4042, long gear plate; 4043, connecting rod; 405, step motor one; 406, small support; 407, pulley mechanism; 4071, short rod; 4072, round runner; 4073, connecting block; 4074, bottom cover; 408, cogwheel; 409, rotating rod; 5, centering mechanism; 501, step motor two; 502, support plate; 503, lower fixed plate; 504, moving plate; 505, silica gel clamp plate; 506, upper fixed plate; 507, side frame; 508, pulley rod; 5081, centering frame; 509, short screw rod; 6, short conveying belt; 601, side plate two. DETAILED DESCRIPTION

[0026] The technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. In addition, the forms of the structures described in the following embodiments are only examples, and the engine water tank component processing conveying device involved in the present application is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0027] With reference to Figure 1 and Figure 2 , the present application provides an engine water tank component processing conveying device comprising a long conveyor belt 1, a large support 2 and a short conveyor belt 6. The top of the large support 2 is fixedly connected with the short conveyor belt 6. The top side of the short conveyor belt 6 is fixedly connected with a fixed rod 304. The top of the fixed rod 304 is fixedly connected with an outer shell 301. The inner bottom center of the outer shell 301 is fixedly connected with a receiving rotating wheel 303. The inner side of the outer shell 301 and the two sides of the receiving rotating wheel 303 are provided with side supports 302. The inner side of the side support 302 and the top of the receiving rotating wheel 303 are rotatably connected with a supporting plate 305. The inner side of the side support 302 and the inner side of the outer shell 301 are provided with springs 306. With reference to Figure 1 , the two sides of the short conveyor belt 6 are fixedly connected with side plates two 601. The side away from the rotating blanking mechanism 3 of the side plate two 601 is fixedly connected with a reciprocating cleaning mechanism 4 through the large support 2. The side away from the rotating blanking mechanism 3 of the short conveyor belt 6 is vertically provided with the long conveyor belt 1 through the large support 2. The two sides of the long conveyor belt 1 are fixedly connected with side plates one 101. The top of the side plate one 101 is fixedly connected with a centering mechanism 5.

[0028] With reference to Figure 1 and Figure 2 , the core component flat tube required in the engine water tank is the main pipeline for the flow of coolant, and its cleanliness and stability during transportation are very important. The flat tube just collected after production is placed inside the outer shell 301. Under the rotation of the receiving rotating wheel 303, the flat tube is sequentially clamped at the grooves on the receiving rotating wheel 303. The springs 306 are slightly compressed. The springs 306 can give a certain distance of fault tolerance while clamping the flat tube under a certain pressure, so as to ensure that the flat tube can smoothly and stably enter the short conveyor belt 6. Under the limitation of the supporting plate 305 and the side support 302, it sequentially enters the grooves of the short conveyor belt 6 along the rotating angle. It sequentially moves forward in the conveying of the short conveyor belt 6, moves to the position of the reciprocating cleaning mechanism 4, and cleans the metal debris inside the flat tube through the stepping motor one 405. The flat tube is conveyed from the short conveyor belt 6 to the long conveyor belt 1 through a specific acceleration. After passing through the structure centering mechanism 5, the centering distance of the flat tube is adjusted.

[0029] With reference to Figure 3 and Figure 4 , the reciprocating cleaning mechanism 4 comprises a bottom shell 401 fixedly connected to the top of the large support 2, a long groove 402 is arranged on the top of the bottom shell 401 away from the side of the rotating material feeding mechanism 3, a short groove 403 is arranged on the top of the bottom shell 401 and the side of the long groove 402 close to the rotating material feeding mechanism 3, small supports 406 are fixedly connected to the top of the bottom shell 401 close to the two sides of the long groove 402 and the short groove 403, a stepping motor 405 is arranged on the outer side of any small support 406, a cleaning rod mechanism 404 is arranged on the top of the bottom shell 401 and the inner side of the stepping motor 405, and pulley mechanisms 407 are arranged on the inner side of the bottom shell 401 and the bottom of the cleaning rod mechanism 404 in the long groove 402 and the short groove 403 respectively.

[0030] With reference to Figure 7 , the inner side of the small support 406 is rotatably connected with a rotating rod 409, and the outer side of the rotating rod 409 close to the side of the stepping motor 405 is fixedly connected with a circular gear 408.

[0031] With reference to Figure 8 , the pulley mechanism 407 comprises a circular wheel 4072 slidingly connected to the top of the inner side of the long groove 402, the inner side of the circular wheel 4072 is rotatably connected with a connecting block 4073, the bottom of the bottom shell 401 and the bottom of the connecting block 4073 are provided with a bottom cover 4074, and the top of the connecting block 4073 is fixedly connected with a short rod 4071.

[0032] With reference to Figure 5 and Figure 6 , the inner side of the long groove 402 and the top of the short rod 4071 are fixedly connected with a connecting rod 4043, the other side of the top of the connecting rod 4043 is fixedly connected with a long gear plate 4042, and the other side of the long gear plate 4042 is fixedly connected with a brush rod 4041.

[0033] With reference to Figure 5 and Figure 6, flat pipe stable card joint to the groove of short conveyor belt 6, when the step motor one 405 is opened, the step motor one 405 drives the rotating rod 409 and the circular gear 408 on it to rotate, the circular gear 408 is engaged with the long gear plate 4042 below in the process of rotating, the long gear plate 4042 is fixedly connected with the connecting rod 4043 and the pulley mechanism 407, when the long gear plate 4042 moves forward, the connecting rod 4043 drives the short rod 4071 and the circular wheel 4072 to move forward, the circular wheel 4072 slides in the groove of the long groove 402, timely follows the movement of the connecting rod 4043, at the same time, the bottom of the long gear plate 4042 is provided with the same pulley mechanism 407, the circular wheel 4072 in it can also slide in the groove of the short groove 403, to ensure that the step motor one 405 can drive the brush rod 4041 to move stably in the straight line direction, and clean the inside of the flat pipe, remove the excess metal debris and dust.

[0034] With reference to Figure 9 , the centering mechanism 5 includes the lower fixed plate 503 fixedly connected on both sides of the top of the side plate one 101, the top of the lower fixed plate 503 is fixedly connected with the branch plate 502, the top of the branch plate 502 is fixedly connected with the upper fixed plate 506 near both sides of the lower fixed plate 503, one side of the top of the branch plate 502 is fixedly connected with the side frame 507, the outer side of the side frame 507 is rotatably connected with the step motor two 501, the other side of the side frame 507 is rotatably connected with the short screw rod 509, the other side of the short screw rod 509 is fixedly connected with the pulley rod 508, the outer side of the pulley rod 508 and the groove of the branch plate 502 are provided with the moving plate 504, the top of the branch plate 502 and the outside of the pulley rod 508 are provided with the centering frame 5081, the inner side bottom of the moving plate 504 is fixedly connected with the silica gel clamp plate 505.

[0035] With reference to Figure 9 , the cleaned flat pipe enters the long conveyor belt 1 from the short conveyor belt 6, the step motor two 501 is opened to drive the short screw rod 509 fixedly connected on it, the other side of the short screw rod 509 is connected with the pulley rod 508, the pulley rod 508 is provided with different direction threads on both sides of the aperture of the branch plate 502, when it rotates, the moving plate 504 moves to the center under the engagement of the threads, the silica gel clamp plate 505 at the bottom of the upper fixed plate 506 gradually clamps the flat pipe in the movement process, so that the flat pipe can be stably placed at the center of the long conveyor belt 1.

[0036] The working principle of the present application: the core component flat tube required in the engine water tank is the main pipeline of the cooling liquid flow, and the cleanliness and stability during transportation are very important. The flat tube just produced and collected is placed inside the shell 301, and under the rotation of the receiving runner 303, the flat tube is sequentially clamped in the groove on the receiving runner 303, and under the limitation of the supporting plate 305 and the side support 302, it sequentially enters the groove of the short conveyor belt 6 along the angle of rotation, and sequentially moves forward in the conveying of the short conveyor belt 6, and moves to the position of the reciprocating cleaning mechanism 4. The metal scraps inside the flat tube are cleaned by the stepping motor 405, and the flat tube is conveyed from the short conveyor belt 6 to the long conveyor belt 1 by a specific acceleration. After passing through the structure centering mechanism 5, the centering distance of the flat tube is adjusted, and the flat tube is stably clamped in the groove of the short conveyor belt 6. When the stepping motor 405 is started, the stepping motor 405 drives the rotating rod 409 and the circular gear 408 thereon to rotate together. The circular gear 408 meshes with the long gear plate 4042 below in the process of rotation, and the long gear plate 4042 is fixedly connected with the connecting rod 4043 and the pulley mechanism 407. When the long gear plate 4042 moves forward, the connecting rod 4043 drives the short rod 4071 and the circular wheel 4072 to move forward together. The circular wheel 4072 slides in the groove of the long groove 402, timely following the movement of the connecting rod 4043. At the same time, the bottom of the long gear plate 4042 is provided with the same pulley mechanism 407, and the circular wheel 4072 inside can also slide in the groove of the short groove 403, so as to ensure that the stepping motor 405 can drive the brush rod 4041 to stably move in the straight line direction and clean the inside of the flat tube. The cleaned flat tube enters the long conveyor belt 1 from the short conveyor belt 6. After the stepping motor 502 is started, the short screw rod 509 fixedly connected thereto is driven, and the pulley rod 508 connected to the other side of the short screw rod 509 is provided with threads in different directions on both sides of the aperture of the support plate 502. When it rotates, the moving plate 504 moves towards the center under the mutual meshing of the threads. The silica gel clamp plate 505 at the bottom of the fixed plate 506 gradually clamps the flat tube during the movement, so that the flat tube can be stably placed at the center of the long conveyor belt 1.

[0037] Finally: the above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A conveying device for engine water tank component machining, comprising a long conveyor belt (1), a large support (2) and a short conveyor belt (6), characterized in that: The top of the large support (2) is fixedly connected with a short conveying belt (6), one side of the top of the short conveying belt (6) is fixedly connected with a fixed rod (304), the top of the fixed rod (304) is fixedly connected with a shell (301), the inner side bottom of the shell (301) is fixedly connected with a receiving runner (303), the inner side of the shell (301) and the two sides of the receiving runner (303) are provided with side supports (302), the inner side of the side support (302) and the top of the receiving runner (303) are rotatably connected with a supporting plate (305), the inner side of the side support (302) and the inner side of the shell (301) are provided with springs (306), the collected flat tubes are placed in the shell (301), under the rotation of the receiving runner (303), the flat tubes are sequentially clamped in the grooves on the receiving runner (303), under the limitation of the supporting plate (305) and the side support (302), the flat tubes sequentially enter the grooves of the short conveying belt (6) along the rotating angle, and sequentially move forward in the conveying of the short conveying belt (6).

2. An engine block component processing conveyor as set forth in claim 1, wherein: The two sides of the short conveying belt (6) are fixedly connected with side plates two (601), one side, away from the rotating unloading mechanism (3), of the side plate two (601) is fixedly connected with a reciprocating cleaning mechanism (4) through the large support (2), and one side, away from the rotating unloading mechanism (3), of the short conveying belt (6) is vertically provided with a long conveying belt (1) through the large support (2), and the two sides of the long conveying belt (1) are fixedly connected with side plates one (101), and the top of the side plate one (101) is fixedly connected with a centering mechanism (5).

3. An engine block component processing conveyor as set forth in claim 2 wherein: The reciprocating cleaning mechanism (4) comprises a bottom shell (401) fixedly connected to the top of the large support (2), a long groove (402) is arranged on the top of the bottom shell (401) and away from the rotating unloading mechanism (3), and a short groove (403) is arranged on the top of the bottom shell (401) and the side, close to the rotating unloading mechanism (3), of the long groove (402).

4. An engine block component processing conveyor as set forth in claim 3 wherein: The two sides of the top of the bottom shell (401), close to the long groove (402) and the short groove (403), are fixedly connected with small supports (406), a stepping motor one (405) is arranged on the outer side of the small support (406), a cleaning rod mechanism (404) is arranged on the top of the bottom shell (401) and the inner side of the stepping motor one (405), and pulley mechanisms (407) are arranged on the inner side of the bottom shell (401) and the bottom of the cleaning rod mechanism (404) in the long groove (402) and the short groove (403) respectively.

5. An engine block component processing conveyor as set forth in claim 4 wherein: The inner side of the small support (406) is rotatably connected with a rotating rod (409), and the outer side of the rotating rod (409), close to the stepping motor one (405), is fixedly connected with a circular gear (408).

6. An engine block component processing conveyor as set forth in claim 4 wherein: The pulley mechanism (407) includes a round wheel (4072) slidingly connected to the inner side top of the long groove (402), the inner side of the round wheel (4072) is rotationally connected with a connecting block (4073), the bottom of the bottom plate shell (401) and the bottom of the connecting block (4073) are provided with a bottom cover (4074), and the top of the connecting block (4073) is fixedly connected with a short rod (4071).

7. An engine block component processing conveyor as set forth in claim 4 wherein: The inner side of the long groove (402) and the top of the short rod (4071) are fixedly connected with a connecting rod (4043), one side of the connecting rod (4043) is fixedly connected with a long gear plate (4042), and the other side of the long gear plate (4042) is fixedly connected with a brush rod (4041).

8. The engine block component processing delivery apparatus of claim 2, wherein: The centering mechanism (5) includes lower fixed plates (503) fixedly connected to the two sides of the top of the side plate (101), the top of the lower fixed plate (503) is fixedly connected with a support plate (502), and the top of the support plate (502) is fixedly connected with upper fixed plates (506) on the two sides close to the lower fixed plate (503).

9. An engine block component machining delivery apparatus according to claim 8, characterized in that: One side of the top of the support plate (502) is fixedly connected with a side frame (507), and the outer side of the side frame (507) is rotationally connected with a stepping motor (501).

10. An engine block component processing conveyor as set forth in claim 9 wherein: The other side of the side frame (507) is rotationally connected with a short screw rod (509), the other side of the short screw rod (509) is fixedly connected with a pulley rod (508), the outer side of the pulley rod (508) and the groove of the support plate (502) are provided with a moving plate (504), the top of the support plate (502) and the outer side of the pulley rod (508) are provided with a centering frame (5081), and the inner side bottom of the moving plate (504) is fixedly connected with a silica gel clamping plate (505).

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