A kind of height adjusting structure of coding belt conveyor with visual control is provided

The height adjustment structure controlled by vision solves the safety hazards and applicability issues caused by the height of the coding belt conveyor, and achieves automatic adjustment and stability, adapting to conveyor belts of different lengths.

CN117208507BActive Publication Date: 2026-04-24ZHANJIANG PORT (GRP) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHANJIANG PORT (GRP) CO LTD
Filing Date
2023-10-12
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

The existing coding belt conveyor is too high, which causes coding workers to use a "throwing and catching" method to carry the material bags, posing a safety hazard. Blind spots can easily cause deviations, and it is not suitable for conveyor belts of different lengths.

Method used

The height adjustment structure, which is controlled by vision and includes components such as a two-way lead screw, servo motor, airbag and anti-slip pad, enables automatic adjustment and stability of the belt conveyor height, and adapts to conveyor belts of different lengths.

Benefits of technology

It reduces the labor intensity of coding workers, reduces safety hazards, improves the stability and applicability of the device, and adapts to conveyor belts of different lengths.

✦ Generated by Eureka AI based on patent content.

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Abstract

The application discloses a kind of height adjusting structure of coding belt conveyor with visual control, including belt conveyor body, protective shell, moving wheel, servo motor, conveying belt, driven wheel and rocker, the front and rear two sides upper end of the belt conveyor body is fixedly installed with protective shell, the front and rear two ends center of the belt conveyor body is fixedly installed with fixed rod, and the surface of fixed rod is rotatably installed with support rod.The height adjusting structure of coding belt conveyor with visual control is provided with the bidirectional screw rod capable of height adjustment, under the support of support rod, the movable block is driven to slide in the recess inside by the rotation of bidirectional screw rod, under the pulling of moving rod, the right side of belt conveyor body can move up and down to lift, the height of coding belt conveyor end is reduced at this time, more comfortable human-computer interaction code stacking height is obtained by demonstration, so that coding worker reduces work intensity while reducing safety hazard.
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Description

Technical Field

[0001] This invention relates to the field of coding belt conveyor technology, specifically to a coding belt conveyor height adjustment structure equipped with vision control. Background Technology

[0002] A coding belt conveyor is a type of conveyor device that transports items that need to be coded to a designated location, where a coding machine then marks the items. However, existing coding belt conveyors still have certain shortcomings, such as:

[0003] A coding belt conveyor with publication number CN217837092U, designed to prevent material from falling, includes a coding machine workbench. A belt conveyor frame is mounted on the upper side of the workbench, and a pulley is rotatably connected to the inner side of the belt conveyor frame. A conveyor belt is attached to the outer side of the pulley. A motor is mounted on the left rear of the belt conveyor frame, and the output end of the motor is connected to the rear end of the pulley on the left. The conveyor also includes a support base mounted on the outer side of the conveyor belt. A rotating shaft is rotatably connected to the center of the support base, and a turntable is mounted on the outer side of the rotating shaft. This coding belt conveyor, designed to prevent material from falling, allows bottled material to be placed on the support base and positioned using side-distributed limiting plates to ensure the stability of the bottled material during transport, preventing it from falling from the sides of the conveyor and ensuring that the bottled material remains stable and vertical during coding.

[0004] The aforementioned coding belt conveyor, designed to prevent material from falling, ensures material stability during transport, preventing deviation during coding. However, existing coding belt conveyors were not designed with manual coding in mind, resulting in a high design height. This necessitates manual coding from behind the conveyor, forcing workers to use a "throwing and catching" method to move packages, creating blind spots and posing significant safety hazards. Furthermore, adjusting the height of the coding machine can cause it to shift due to vibration from the ground, affecting subsequent use by workers. Additionally, different belt lengths require different coding machines, making it incompatible with conveyor belts of varying lengths. Summary of the Invention

[0005] The purpose of this invention is to provide a height adjustment structure for a coding conveyor belt equipped with vision control, in order to solve the problems mentioned in the background art, such as the high height of the conveyor belt causing coding workers to use a "throwing and catching" method to transport material bags, resulting in blind spots, high safety hazards, easy displacement due to vibration, affecting subsequent use by workers, and incompatibility with conveyor belts of different lengths.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a height adjustment structure for a coding belt conveyor with vision control, comprising a belt conveyor body, a protective shell, a movable wheel, a servo motor, a conveyor belt, a driven wheel, and a rocker arm. The protective shell is fixedly installed on the upper ends of the front and rear sides of the belt conveyor body. A fixed rod is fixedly installed at the center of the front and rear ends of the belt conveyor body, and a support rod is rotatably installed on the surface of the fixed rod. A base is installed through the lower end of the support rod. Limit blocks are fixedly installed on the front and rear ends of the base. Movable wheels are installed through the front and rear ends of the base. A servo motor is fixedly installed inside the rear end of the base. A bidirectional lead screw is fixedly installed at the output end of the servo motor. A movable block is threaded on the surface of the bidirectional lead screw. A movable rod is rotatably installed on the upper end of the movable block, and the upper end of the movable rod is rotatably installed on the lower right side of the belt conveyor body. A groove is formed on the upper surface of the base.

[0007] A rotating rod is rotatably installed at the bottom center of the right side of the belt conveyor body. A fixing block is fixedly installed at the center of the upper end of the base, and a first airbag is fixedly installed inside the fixing block. An air guide pipe is fixedly installed on the left side of the first airbag. The lower end of the air guide pipe is fixedly installed on the left side of the second airbag. The upper end of the second airbag is fixedly installed inside the base plate, and the upper end of the base plate is fixedly installed at the lower end of the base. A sliding plate is fixedly installed at the lower end of the second airbag, and a supporting anti-slip pad is fixedly installed at the lower end of the sliding plate. Return springs are fixedly installed inside the front and rear ends of the base plate.

[0008] A conveyor belt is nested inside the upper right side of the conveyor body, and the left side of the conveyor belt is nested on the surface of the driven wheel. The front and rear ends of the driven wheel are rotatably installed inside the positioning block. A transverse lead screw is installed inside the positioning block, and a first bevel gear is fixedly installed at the left end of the transverse lead screw. A limit groove is opened on the inner wall of the front end of the conveyor body. A rocker arm is installed through the rear left side of the conveyor body, and a second bevel gear is fixedly installed at the lower end of the rocker arm.

[0009] Furthermore, the support rod forms a rotating structure with the base through the fixed rod, and there are two support rods. This structure demonstrates that the support rod can rotate at both ends to support the belt conveyor body.

[0010] Furthermore, the threads at the front and rear ends of the bidirectional lead screw are opposite, and the bidirectional lead screw forms a rotating structure with the base through a servo motor. This structure reflects the shape of the bidirectional lead screw and its ability to rotate.

[0011] Furthermore, the movable block is connected to the bidirectional lead screw by a threaded connection, and the movable block forms a sliding structure with the groove through the bidirectional lead screw. This structure demonstrates that the movable block can move left and right under the rotation of the bidirectional lead screw.

[0012] Furthermore, the movable rod and the movable block are connected by a rotatable connection, and the movable rod forms a rotatable structure with the conveyor body through the movable block, and the conveyor body forms a lifting structure through the movable rod. This structure demonstrates that the movable rod can stretch the right side of the conveyor body to move up and down as the movable block moves left and right.

[0013] Furthermore, the lower end of the rotating rod is nested inside the fixed block, and the rotating rod forms a pressing structure with the first airbag through the fixed block. The first airbag forms a communication structure with the second airbag through the air guide tube. This structure demonstrates the effect of the first airbag delivering its internal gas to the second airbag through the air guide tube under the compression of the rotating rod.

[0014] Furthermore, the front and rear ends of the sliding plate are connected to the base plate in a sliding connection manner, and the sliding plate forms an elastic structure with the base plate through a return spring. This structure enables the sliding plate to move up and down.

[0015] Furthermore, the first bevel gear and the second bevel gear mesh with each other, and the second bevel gear forms a rotating structure with the first bevel gear through the rocker arm. This structure demonstrates that the second bevel gear can drive the first bevel gear to rotate under the rotation of the rocker arm.

[0016] Furthermore, the transverse lead screw forms a rotating structure with the conveyor belt body through the first bevel gear, and the connection between the transverse lead screw and the positioning block is a threaded connection. This structure demonstrates that the transverse lead screw can drive the positioning block under the rotation of the first bevel gear.

[0017] Furthermore, the driven wheel forms a rotating structure with the positioning block via the conveyor belt, and the positioning block is connected to the limiting groove by a sliding connection. This structure demonstrates that the driven wheel can rotate inside the positioning block.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The height adjustment structure of the coding belt conveyor with vision control is equipped with a bidirectional screw that can adjust the height. With the support of the support rod, the rotation of the bidirectional screw causes the movable block to drive the moving rod to slide inside the groove. Under the pull of the moving rod, the right side of the belt conveyor body can move up and down to raise and lower, thereby reducing the height of the end of the coding belt conveyor. The demonstration shows a more comfortable human-machine interaction stacking height, which reduces the labor intensity of coding workers and reduces safety hazards.

[0020] 2. The height adjustment structure of the coding belt conveyor with vision control is equipped with a support anti-slip pad to prevent deviation. By raising and lowering the end of the belt conveyor body, the rotating rod can move up and down with it. When the rotating rod moves up and down, it compresses the first air bladder. The gas is delivered to the second air bladder through the air guide pipe. The second air bladder expands, causing the support anti-slip pad to contact and hold the ground. This ensures the stability of the bottom when the height of the end of the device is adjusted. Under the action of the support anti-slip pad, the moving wheel is not easy to deviate due to the vibration of the device, thus improving the stability of the device.

[0021] 3. This visually controlled coding belt conveyor height adjustment structure is equipped with a transverse screw that can adjust the spacing of the conveyor belt. The rotation of the transverse screw is controlled by a rocker arm, which causes the positioning block to drive the driven wheel to move. During installation, it can be adjusted according to different conveyor belt lengths, so that the device can adapt to conveyor belts of different lengths and adjust the spacing between the conveyor belts, making the device more widely applicable and convenient for users to choose. Attached Figure Description

[0022] Figure 1 This is a front view structural diagram of the present invention;

[0023] Figure 2 This is a schematic cross-sectional view of the structure on the right side of the present invention;

[0024] Figure 3 This is a schematic diagram of the front sectional view of the movable block of the present invention;

[0025] Figure 4 This is a schematic diagram of the front sectional view of the fixing block of the present invention;

[0026] Figure 5 This is a schematic diagram of the front cross-sectional structure of the air duct of the present invention;

[0027] Figure 6 For the present invention Figure 2 Enlarged structural diagram at point A in the middle;

[0028] Figure 7 This is a schematic diagram of the front sectional view of the belt conveyor body of the present invention;

[0029] Figure 8 This is a top sectional view of the transverse lead screw structure of the present invention.

[0030] In the diagram: 1. Conveyor body; 2. Protective shell; 3. Fixed rod; 4. Support rod; 5. Base; 6. Limiting block; 7. Moving wheel; 8. Servo motor; 9. Bidirectional lead screw; 10. Movable block; 11. Groove; 12. Moving rod; 13. Rotating rod; 14. Fixed block; 15. First airbag; 16. Air guide pipe; 17. Second airbag; 18. Base plate; 19. Sliding plate; 20. Support anti-slip pad; 21. Return spring; 22. Conveyor belt; 23. Driven wheel; 24. Positioning block; 25. Transverse lead screw; 26. Limiting groove; 27. First bevel gear; 28. Second bevel gear; 29. ​​Rocker arm. Detailed Implementation

[0031] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] Please see Figures 1-8 The present invention provides a technical solution: a height adjustment structure for a coding belt conveyor with vision control, comprising a belt conveyor body 1, a protective shell 2, a fixed rod 3, a support rod 4, a base 5, a limiting block 6, a moving wheel 7, a servo motor 8, a bidirectional lead screw 9, a movable block 10, a groove 11, a moving rod 12, a rotating rod 13, a fixed block 14, a first airbag 15, an air guide pipe 16, a second airbag 17, a base plate 18, a sliding plate 19, a supporting anti-slip pad 20, a return spring 21, a conveyor belt 22, a driven wheel 23, a positioning block 24, a transverse lead screw 25, a limiting groove 26, a first bevel gear 27, a second bevel gear 28, and a rocker arm 29.

[0033] In this embodiment: protective shells 2 are fixedly installed on the upper ends of the front and rear sides of the belt conveyor body 1; fixed rods 3 are fixedly installed at the center of the front and rear ends of the belt conveyor body 1; support rods 4 are rotatably installed on the surface of the fixed rods 3; base 5 is installed through the lower end of the support rods 4; limit blocks 6 are fixedly installed on the front and rear ends of the base 5; movable wheels 7 are installed through the front and rear ends of the base 5; servo motor 8 is fixedly installed inside the rear end of the base 5; bidirectional lead screw 9 is fixedly installed at the output end of the servo motor 8; movable block 10 is threaded on the surface of the bidirectional lead screw 9; movable rod 12 is rotatably installed on the upper end of the movable block 10; and the upper end of the movable rod 12 is rotatably installed on the lower right side of the belt conveyor body 1; and groove 11 is provided on the upper surface of the base 5.

[0034] A rotating rod 13 is rotatably installed at the bottom center of the right side of the belt conveyor body 1. A fixing block 14 is fixedly installed at the center of the upper end of the base 5. A first airbag 15 is fixedly installed inside the fixing block 14. An air guide pipe 16 is fixedly installed on the left side of the first airbag 15. The lower end of the air guide pipe 16 is fixedly installed on the left side of the second airbag 17. The upper end of the second airbag 17 is fixedly installed inside the base plate 18. The upper end of the base plate 18 is fixedly installed at the lower end of the base 5. A sliding plate 19 is fixedly installed at the lower end of the second airbag 17. A supporting anti-slip pad 20 is fixedly installed at the lower end of the sliding plate 19. A return spring 21 is fixedly installed inside the front and rear ends of the base plate 18.

[0035] A conveyor belt 22 is nested inside the upper right side of the conveyor body 1, and the left side of the conveyor belt 22 is nested on the surface of the driven wheel 23. The front and rear ends of the driven wheel 23 are rotatably installed inside the positioning block 24. A transverse lead screw 25 is installed inside the positioning block 24, and a first bevel gear 27 is fixedly installed at the left end of the transverse lead screw 25. A limit groove 26 is opened on the inner wall of the front end of the conveyor body 1. A rocker arm 29 is installed through the left rear end of the conveyor body 1, and a second bevel gear 28 is fixedly installed at the lower end of the rocker arm 29.

[0036] The support rod 4 forms a rotating structure with the base 5 through the fixed rod 3, and there are two support rods 4. The front and rear ends of the bidirectional lead screw 9 have opposite threads, and the bidirectional lead screw 9 forms a rotating structure with the base 5 through the servo motor 8. The movable block 10 is connected to the bidirectional lead screw 9 by a threaded connection, and the movable block 10 forms a sliding structure with the groove 11 through the bidirectional lead screw 9. The moving rod 12 is connected to the movable block 10 by a rotating connection, and the moving rod 12 forms a rotating structure with the belt conveyor body 1 through the movable block 10. The belt conveyor body 1 forms a lifting structure through the moving rod 12.

[0037] according to Figure 1 , Figure 2 and Figure 3The height adjustment structure of the coding belt conveyor with vision control is as follows: Before the device starts working, the limit block 6 limits the moving wheel 7, and the moving wheel 7 moves the belt conveyor body 1 to the working position. The servo motor 8 is started, and the servo motor 8 drives the bidirectional lead screw 9 to rotate. Since the threads at the front and rear ends of the bidirectional lead screw 9 are opposite, the movable block 10, which is threaded to it, moves inward or outward at the same time under the rotation of the bidirectional lead screw 9. When the movable block 10 moves inside the groove 11, due to the rotational connection at the upper and lower ends of the moving rod 12, the movable block 10 drives the belt conveyor body 1 to move up and down through the moving rod 12. At this time, the up and down movement of the belt conveyor body 1 is supported by the fixed rods 3 at the front and rear ends, which rotate to install the support rod 4. The lower end of the support rod 4 is rotated to install on the surface of the base 5, so the support rod 4 supports the belt conveyor body 1. At the same time, the protective shell 2 set at the front and rear ends of the belt conveyor body 1 isolates the internal parts to prevent the operator from accidentally putting his / her hand into the machine and causing an accident, thus protecting the operator.

[0038] The lower end of the rotating rod 13 is nested inside the fixed block 14, and the rotating rod 13 forms a pressing structure with the first airbag 15 through the fixed block 14. The first airbag 15 forms a communication structure with the second airbag 17 through the air guide tube 16. The front and rear ends of the sliding plate 19 are connected to the bottom plate 18 by sliding connection, and the sliding plate 19 forms an elastic structure with the bottom plate 18 through the return spring 21.

[0039] according to Figure 2 , Figure 4 , Figure 5 and Figure 6 The height adjustment structure of the coding belt conveyor equipped with vision control, when raised or lowered at the right end of the belt conveyor body 1, rotates the rotating rod 13, which is installed at the bottom right side of the belt conveyor body 1, nested inside the fixed block 14. As the right end of the belt conveyor body 1 descends, the rotating rod 13 compresses the first airbag 15 inside the fixed block 14. At this time, the first airbag 15, being compressed, transmits the internal gas to the second airbag 17 through the air guide pipe 16. The second airbag 17 inflates upon receiving the gas, thus pushing the sliding plate 19 inside the base plate 18. The sliding plate 19... The expansion of the second airbag 17 compresses the return spring 21, and as the sliding plate 19 descends, the supporting anti-slip pad 20 contacts the ground for support, preventing the device from shifting. Conversely, when the right end of the belt conveyor body 1 stops descending, the right end of the belt conveyor body 1 rises. At this time, the rotating rod 13 stops compressing the first airbag 15, and the sliding plate 19 moves upward due to the elastic force of the return spring 21, compressing the second airbag 17. At this time, the second airbag 17 sends the internal gas back to the first airbag 15, so that the supporting anti-slip pad 20 stops contacting the ground.

[0040] The first bevel gear 27 and the second bevel gear 28 mesh with each other, and the second bevel gear 28 forms a rotating structure with the first bevel gear 27 through the rocker arm 29. The transverse lead screw 25 forms a rotating structure with the belt conveyor body 1 through the first bevel gear 27, and the transverse lead screw 25 is connected to the positioning block 24 by a threaded connection. The driven wheel 23 forms a rotating structure with the positioning block 24 through the conveyor belt 22, and the positioning block 24 is connected to the limiting groove 26 by a sliding connection.

[0041] according to Figure 1 , Figure 2 , Figure 7 and Figure 8 The height adjustment structure of the coding belt conveyor equipped with vision control allows for adjustment based on the length of the conveyor belt 22 before installation. The second bevel gear 28 is rotated via a rocker arm 29. When the second bevel gear 28 rotates, it meshes with the first bevel gear 27, causing the first bevel gear 27 to rotate under the control of the rocker arm 29. This rotation of the transverse lead screw 25 causes the threaded positioning block 24 to move along its surface. The front positioning block 24 can slide within the limiting groove 26, thus moving the driven wheel 23 between the front and rear positioning blocks 24. After adjustment based on the length of the conveyor belt 22, the conveyor belt 22 is installed, achieving compatibility with different conveyor belts 22.

[0042] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0043] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A height adjustment structure for a coding belt conveyor with vision control, comprising a belt conveyor body (1), a protective shell (2), a moving wheel (7), a servo motor (8), a conveyor belt (22), a driven wheel (23), and a rocker arm (29), characterized in that: Protective shells (2) are fixedly installed on the upper ends of the front and rear sides of the belt conveyor body (1). Fixed rods (3) are fixedly installed at the center of the front and rear ends of the belt conveyor body (1). Support rods (4) are rotatably installed on the surface of the fixed rods (3). A base (5) is installed through the lower end of the support rods (4). Limiting blocks (6) are fixedly installed on the front and rear ends of the base (5). Moving wheels (7) are installed through the front and rear ends of the base (5). A servo motor (8) is fixedly installed inside the rear end of the base (5). A bidirectional lead screw (9) is fixedly installed at the output end of the servo motor (8). A movable block (10) is threaded on the surface of the bidirectional lead screw (9). A moving rod (12) is rotatably installed on the upper end of the movable block (10). The upper end of the moving rod (12) is rotatably installed on the lower right side of the belt conveyor body (1). A groove (11) is opened on the upper surface of the base (5). A rotating rod (13) is rotatably installed at the bottom center of the right side of the belt conveyor body (1). A fixing block (14) is fixedly installed at the center of the upper end of the base (5). A first airbag (15) is fixedly installed inside the fixing block (14). An air guide pipe (16) is fixedly installed on the left side of the first airbag (15). The lower end of the air guide pipe (16) is fixedly installed on the left side of the second airbag (17). The upper end of the second airbag (17) is fixedly installed inside the base plate (18). The upper end of the base plate (18) is fixedly installed at the lower end of the base (5). A sliding plate (19) is fixedly installed at the lower end of the second airbag (17). A supporting anti-slip pad (20) is fixedly installed at the lower end of the sliding plate (19). A return spring (21) is fixedly installed inside the front and rear ends of the base plate (18). The conveyor belt (22) is nested inside the upper right side of the conveyor body (1), and the left side of the conveyor belt (22) is nested on the surface of the driven wheel (23). The front and rear ends of the driven wheel (23) are rotatably installed inside the positioning block (24). The internal thread of the positioning block (24) is fitted with a transverse screw (25), and the left end of the transverse screw (25) is fixedly fitted with a first bevel gear (27). The inner wall of the front end of the conveyor body (1) is provided with a limit groove (26). The rear left end of the conveyor body (1) is fitted with a rocker arm (29), and the lower end of the rocker arm (29) is fixedly fitted with a second bevel gear (28). The lower end of the rotating rod (13) is nested inside the fixed block (14), and the rotating rod (13) forms a pressing structure with the first airbag (15) through the fixed block (14), and the first airbag (15) forms a communication structure with the second airbag (17) through the air guide tube (16); The front and rear ends of the sliding plate (19) are connected to the base plate (18) in a sliding connection, and the sliding plate (19) forms an elastic structure with the base plate (18) through the return spring (21).

2. The height adjustment structure of a coding belt conveyor with vision control according to claim 1, characterized in that: The support rod (4) forms a rotating structure with the base (5) through the fixing rod (3), and there are two support rods (4).

3. The height adjustment structure of a coding belt conveyor with vision control according to claim 1, characterized in that: The threads at the front and rear ends of the bidirectional lead screw (9) are opposite, and the bidirectional lead screw (9) forms a rotating structure with the base (5) through the servo motor (8).

4. The height adjustment structure of a coding belt conveyor with vision control according to claim 1, characterized in that: The movable block (10) is connected to the bidirectional lead screw (9) by a threaded connection, and the movable block (10) forms a sliding structure with the groove (11) through the bidirectional lead screw (9).

5. The height adjustment structure of a coding belt conveyor with vision control according to claim 1, characterized in that: The movable rod (12) and the movable block (10) are connected by a rotational connection, and the movable rod (12) forms a rotational structure with the belt conveyor body (1) through the movable block (10), and the belt conveyor body (1) forms a lifting structure through the movable rod (12).

6. The height adjustment structure of a coding belt conveyor with vision control according to claim 1, characterized in that: The first bevel gear (27) meshes with the second bevel gear (28), and the second bevel gear (28) forms a rotating structure with the first bevel gear (27) through the rocker arm (29).

7. The height adjustment structure of a coding belt conveyor with vision control according to claim 1, characterized in that: The transverse lead screw (25) forms a rotating structure with the belt conveyor body (1) through the first bevel gear (27), and the connection between the transverse lead screw (25) and the positioning block (24) is a threaded connection.

8. The height adjustment structure of a coding belt conveyor with vision control according to claim 1, characterized in that: The driven wheel (23) forms a rotating structure with the positioning block (24) via the conveyor belt (22), and the positioning block (24) and the limiting groove (26) are connected by a sliding connection.

Citation Information

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