Material pushing device

Abstract

The utility model provides a material pushing device which comprises a machine frame, the machine frame comprises a first supporting plate and a second supporting plate which are opposite left and right and arranged at intervals, a vertical plate is connected between the rear ends of the first supporting plate and the second supporting plate, and a plurality of connecting parts are arranged on the rear surface of the vertical plate at intervals and used for fixing the machine frame to a preset position. Two sliding rails with the same length are arranged on the front surface of the vertical plate in the direction from top to bottom at intervals, each sliding rail is arranged in the left-right direction, and the two sliding rails are correspondingly arranged. The material pushing device comprises three material pushing units which are marked as a first material pushing unit, a second material pushing unit and a third material pushing unit, the three material pushing units can slide along the two sliding rails, the moving stroke of materials carried by the first material pushing unit covers the whole range of the two sliding rails, and the third material pushing unit and the second material pushing unit are sequentially arranged in the left-right direction. The moving strokes of materials carried by the two pushing units cover part of the range of the two sliding rails respectively, and the pushing units do not interfere with each other. The material pushing device is provided with the three material pushing units, and the actual use requirement can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical equipment technical field especially relates to a push feeding device. BACKGROUND

[0002] In some medical equipment production lines, such as packaging bag production lines, infusion device production lines, etc., push feeding devices are needed to push related materials, so that the related materials can be moved from one position to another position to meet the needs of the assembly line operation in the production line.

[0003] The existing push feeding device is usually a servo single power transmission. When multiple groups of materials need to be transferred at the same time, multiple push feeding devices need to be set up accordingly. This not only increases the floor area of the production line, but also may interfere with each other, affecting the use effect. SUMMARY

[0004] In order to solve the problems existing in the prior art, the present application provides a push feeding device which has three push feeding units and can meet the actual use requirements.

[0005] In order to achieve the above purpose, the present application provides a push feeding device, which comprises a rack, the rack comprises a first support plate and a second support plate which are oppositely arranged and spaced apart, a vertical plate is connected between the rear end portions of the two, a plurality of connecting portions are arranged at the rear surface of the vertical plate and spaced apart, which are used to fix the rack at a predetermined position to realize the installation of the push feeding device; two equal-length slide rails are arranged on the front surface of the vertical plate and spaced apart along the direction from top to bottom, respectively marked as first slide rail and second slide rail, each slide rail is arranged along the left-right direction, and the two slide rails are correspondingly arranged; the push feeding device comprises three push feeding units, respectively marked as first push feeding unit, second push feeding unit and third push feeding unit, the three push feeding units can slide along the two slide rails, wherein the moving stroke of the material carried by the first push feeding unit covers the entire range of the two slide rails, the third push feeding unit and the second push feeding unit are arranged in sequence along the left-right direction, and the moving stroke of the material carried by the two covers part of the range of the two slide rails, and the three push feeding units do not interfere with each other.

[0006] In some embodiments, a first mounting bracket is connected to the second support plate, and a second mounting bracket is connected to the first support plate, the first mounting bracket is located on the right side of the second support plate, and the second mounting bracket is located on the left side of the first support plate.

[0007] In some embodiments, the first pushing unit includes a first driving mechanism, which is mounted on the first mounting bracket. The first driving mechanism can drive a first driving wheel to rotate. The first driving wheel is connected to a driven wheel in a first driven wheel mechanism via a first synchronous belt. The base of the first driven wheel mechanism is fixed at the lower end of the right surface of the first support plate. The first synchronous belt passes through a set of through holes in the lower part of the second support plate. When the first servo motor is driven to operate, it can drive the first driving wheel to rotate, and the first synchronous belt moves accordingly. The first synchronous belt is fixed on a second slide block via a first pressure plate. A second slider that cooperates with the second slide rail is provided on the rear surface of the second slide block. A first slider that cooperates with the first slide rail is provided on the rear surface of the first slide block. The first slide block and the second slide block are spaced apart in the vertical direction. The first slide block is connected to the upper end of the first mounting plate, and the second slide block is connected to the lower end of the first mounting plate. The first mounting plate is used to connect an external material clamp. The first slide block and the second slide block are spaced apart in the vertical direction, and the distance between them ensures that the first mounting plate can move in the left and right direction within the entire range of the first and second slide rails.

[0008] In some embodiments, the second pushing unit includes a second driving mechanism, which is mounted on the first mounting bracket. The second driving mechanism can drive the second driving wheel to rotate. The second driving wheel is connected to the driven wheel in the second driven wheel mechanism via a second synchronous belt. The base of the second driven wheel mechanism is fixed on the front surface of the vertical plate. The second synchronous belt passes through a set of through holes in the upper part of the second support plate. When the second servo motor is driven to operate, it can drive the second driving wheel to rotate, and the second synchronous belt moves accordingly. The second synchronous belt is fixed on the third slide block via a second pressure plate. The upper end of the rear surface of the third slide block is provided with a third slider that cooperates with the first slide rail. The lower end of the rear surface of the third slide block is provided with a fourth slider that cooperates with the second slide rail. The third slide block is also connected to a second mounting plate, which is used to connect an external material clamp.

[0009] In some embodiments, the third pushing unit includes a third driving mechanism, which is mounted on the second mounting bracket. The third driving mechanism can drive a third driving wheel to rotate. The third driving wheel is connected to a driven wheel in a third driven wheel mechanism via a third synchronous belt. The base of the third driven wheel mechanism is fixed to the front surface of the vertical plate. The third synchronous belt passes through a set of through holes provided on the first support plate. When the third servo motor is driven to operate, it can drive the third driving wheel to rotate, and the third synchronous belt moves accordingly. The third synchronous belt is fixed to a fourth slide block via a third pressure plate. A fifth slider that cooperates with the first slide rail is provided at the upper end of the rear surface of the fourth slide block, and a sixth slider that cooperates with the second slide rail is provided at the lower end of the rear surface of the fourth slide block. The fourth slide block is also connected to a third mounting plate, which is used to connect an external material clamp.

[0010] In some embodiments, the first driven wheel mechanism includes a base, the base including two flat plates spaced apart and arranged in parallel along the vertical direction, referred to as the upper plate and the lower plate respectively, the two ends of the connecting shaft are respectively mounted on the two flat plates, and a driven wheel is connected to the connecting shaft between the two flat plates via a bearing, and a retaining ring is also provided on the connecting shaft to prevent the bearing from moving along the connecting shaft.

[0011] In some embodiments, a tensioning mechanism is further provided in the first driven wheel mechanism. The tensioning mechanism has the following structure: a slide rail is provided in the upper plate, the slide rail is arranged in the left-right direction and passes through the right end face of the upper plate, and a slide rail is also provided at the corresponding position of the lower plate. The two ends of the connecting shaft are respectively assembled at the two slide rails. A baffle is fixed at the right end face of the upper plate and a baffle is also fixed at the right end face of the lower plate to limit the travel of the connecting shaft so that it can only move at the slide rail. A connecting hole is provided at both the upper and lower ends of the connecting shaft. Two bolts pass through the two through holes provided on the base. One end of the bolt is threaded to the corresponding connecting hole. The other end of the bolt is provided with a limiting block. The size of the limiting block is larger than the size of the corresponding through hole. When the bolt is turned, the connecting shaft can be driven to move at the slide rail to adjust the tension of the first synchronous belt.

[0012] In some embodiments, the first drive mechanism includes a first servo motor and a first reducer connected together, the output end of the first reducer being connected to the first drive wheel via a first tension sleeve; the second drive mechanism includes a second servo motor and a second reducer connected together, the output end of the second reducer being connected to the second drive wheel via a second tension sleeve; the third drive mechanism includes a third servo motor and a third reducer connected together, the output end of the third reducer being connected to the third drive wheel via a third tension sleeve.

[0013] In some embodiments, a first horizontal plate is connected between the top ends of the first support plate and the second support plate, and a second horizontal plate is connected between the bottom ends of the first support plate and the second support plate.

[0014] In some embodiments, three sets of photoelectric sensors are provided on the lower surface of the second horizontal plate. Each set of photoelectric sensors includes multiple photoelectric sensors arranged at intervals. The photoelectric sensors are mounted on a sensor mounting base, which is mounted on the second horizontal plate. The three sets of photoelectric sensors are at different heights. Detection plates are provided on the first mounting plate, the second mounting plate, and the third mounting plate, and the three detection plates are used in conjunction with the three sets of photoelectric sensors respectively.

[0015] The beneficial effect of the solution of this application is that the above-mentioned feeding device has three feeding units. The three feeding units are cleverly integrated so that they do not interfere with each other. Moreover, the movement of the material carried by one feeding unit basically covers the sum of the movement of the material carried by the other two feeding units. The device can move three sets of materials at the same time, which can meet the actual use needs. Attached Figure Description

[0016] Figure 1 A schematic diagram of the feeding device in the embodiment is shown.

[0017] Figure 2 It shows Figure 1 Enlarged view of section I.

[0018] Figure 3 It shows Figure 1 Enlarged view of section II.

[0019] Figure 4 It shows Figure 1 Enlarged view of section III.

[0020] Figure 5 It shows Figure 1 Enlarged view of section IV.

[0021] Figure 6 It shows Figure 1 A magnified view of section V.

[0022] Figure 7 A schematic diagram of the first driven wheel mechanism in the embodiment is shown.

[0023] Reference numerals: 1-First support plate, 2-Second support plate, 3-First horizontal plate, 4-Vertical plate, 5-Second horizontal plate, 6-First mounting bracket, 7-Second mounting bracket, 8-First slide rail, 9-Second slide rail, 10-First servo motor, 11-First reducer, 12-First tension sleeve, 13-First drive wheel, 14-First synchronous belt, 15-First driven wheel mechanism, 1501-Base, 1502-Upper plate, 1503-Lower plate, 1504-Slide rail, 1505-Connecting shaft, 1506-Connecting hole, 1507-Driven wheel, 1508-Bearing, 1509-Retaining ring, 15010-Baffle, 15011-Bolt, 16-First slide block, 17-First slider, 18-Second slide block, 19- 20-Second slider, 21-First pressure plate, 22-First mounting plate, 23-Second servo motor, 24-Second reducer, 25-Second drive wheel, 26-Second synchronous belt, 27-Second pressure plate, 28-Third slide block, 29-Fourth slider, 30-Second mounting plate, 31-Second driven wheel mechanism, 32-Third servo motor, 33-Third reducer, 34-Third drive wheel, 35-Third synchronous belt, 36-Third driven wheel mechanism, 37-Third pressure plate, 38-Fourth slide block, 39-Fifth slider, 40-Sixth slider, 41-Third mounting plate, 42-First connecting plate, 43-Second connecting plate, 44-Reinforcing rib, 45-Detection plate, 46-Sensor mounting base, 47-Photoelectric sensor. Detailed Implementation

[0024] The specific embodiments of this application will be further described below with reference to the accompanying drawings.

[0025] In the description of this application, it should be understood that the terms "first," "second," etc., are used to distinguish similar objects, rather than to describe or indicate a specific order or sequence. The terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] like Figures 1 to 7As shown, the feeding device involved in this application includes a frame. In this embodiment, the frame includes a first support plate 1 and a second support plate 2 arranged opposite to each other and spaced apart. A first horizontal plate 3 is connected between the top ends of the two support plates, a second horizontal plate 5 is connected between their bottom ends, and a vertical plate 4, which is the front opening of the frame, is connected between their rear ends. Multiple connecting parts are spaced apart on the rear surface of the vertical plate 4 for fixing the frame at a preset position to realize the installation of the feeding device. Specifically, the connecting part includes a first connecting plate 42 fixed to the rear surface of the vertical plate 4. The first connecting plate 42 is perpendicularly connected to the second connecting plate 43, and a reinforcing rib 44 is provided between them.

[0027] Two equal-length slide rails, designated as the first slide rail 8 and the second slide rail 9, are spaced apart from top to bottom on the front surface of the vertical plate 4. Each slide rail is arranged in a left-right direction, with the two slide rails corresponding to each other. The feeding device includes three feeding units, designated as the first feeding unit, the second feeding unit, and the third feeding unit. The first feeding unit carries material whose travel distance covers the entire range of the two slide rails. The third feeding unit and the second feeding unit are arranged sequentially in a left-right direction, and the travel distance of the material carried by each of them covers a portion of the range of the two slide rails. The three feeding units do not interfere with each other. The travel distance of the material carried by the first feeding unit basically covers the sum of the travel distances of the materials carried by the other two feeding units. All three feeding units can slide along the two slide rails to achieve material feeding.

[0028] In this embodiment, a first mounting bracket 6 is connected to the second support plate 2, and a second mounting bracket 7 is connected to the first support plate 1. Specifically, the first mounting bracket 6 is located on the right side of the second support plate 2, and the second mounting bracket 7 is located on the left side of the first support plate 1.

[0029] The first pushing unit includes a first driving mechanism, which is mounted on the first mounting bracket 6. Specifically, the first driving mechanism includes a first servo motor 10 and a first reducer 11 connected together. The first driving mechanism can drive the first drive wheel 13 to rotate. The output end of the first reducer 11 is connected to the first drive wheel 13 via a first tension sleeve 12. The first drive wheel 13 is connected to the driven wheel in the first driven wheel mechanism 15 via a first synchronous belt 14. The base 1501 of the first driven wheel mechanism 15 is fixed to the lower end of the right surface of the first support plate 1. The first synchronous belt 14 passes through a set of through holes in the second support plate 2 located at the bottom. When the first servo motor 10 is driven to operate, it can drive the first drive wheel 13 to rotate. As the stepping belt 14 moves, the first synchronous belt 14 is fixed on the second slide block 18 by the first pressure plate 20. The rear surface of the second slide block 18 is provided with a second slider 19 that cooperates with the second slide rail 9. The rear surface of the first slide block 16 is provided with a first slider 17 that cooperates with the first slide rail 8. The first slide block 16 and the second slide block 18 are spaced apart in the vertical direction. The first slide block 16 is connected to the upper end of the first mounting plate 21, and the second slide block 18 is connected to the lower end of the first mounting plate 21. The first mounting plate 21 is used to connect external material clamps. The first slide block 16 and the second slide block 18 are spaced apart in the vertical direction. The distance between them ensures that the first mounting plate 21 can move in the left and right directions within the entire range of the first slide rail 8 and the second slide rail 9.

[0030] The first driven wheel mechanism 15 includes a base 1501, which includes two flat plates arranged parallel to each other along the vertical direction, referred to as the upper plate 1502 and the lower plate 1503 respectively. The two ends of the connecting shaft 1505 are respectively mounted on the two plates. A driven wheel 1507 is connected to the connecting shaft 1505 between the two plates via a bearing 1508. A retaining ring 1509 is also provided on the connecting shaft 1505 to prevent the bearing 1508 from moving along the connecting shaft 1505.

[0031] To adjust the tension of the first synchronous belt 14, a tensioning mechanism is also provided in the first driven pulley mechanism 15. The structure of the tensioning mechanism is as follows: a slide rail 1504 is provided in the upper plate 1502, the slide rail 1504 is arranged in the left-right direction and passes through the right end face of the upper plate 1502. A slide rail 1504 is also provided at the corresponding position on the lower plate 1503, the slide rail 1504 is arranged in the left-right direction and passes through the right end face of the lower plate 1503. The two ends of the connecting shaft 1505 are respectively assembled at the two slide rails 1504. A baffle 15010 is fixed at the right end face of the upper plate 1502 and the lower plate 1503... A baffle 15010 is also fixed at the right end face to limit the travel of the connecting shaft 1505, so that it can only move at the slide rail 1504. Connecting holes 1506 are provided at both the upper and lower ends of the connecting shaft 1505. Two bolts 15011 pass through the two through holes provided on the base 1501. One end of the bolt 15011 is threaded to the corresponding connecting hole 1506. The other end of the bolt 15011 is provided with a limiting block. The size of the limiting block is larger than the size of the corresponding through hole. When the bolt 15011 is turned, the connecting shaft 1505 can be moved at the slide rail 1504, thereby adjusting the tension of the first synchronous belt 14.

[0032] The second pushing unit includes a second driving mechanism, which is mounted on the first mounting bracket 6. Specifically, the second driving mechanism includes a second servo motor 22 and a second reducer 23 connected together. The second driving mechanism can drive the second driving wheel 24 to rotate. The output end of the second reducer 23 is connected to the second driving wheel 24 via a second tensioning sleeve. The second driving wheel 24 is connected to the driven wheel in the second driven wheel mechanism 31 via a second synchronous belt 25. The base of the second driven wheel mechanism 31 is fixed to the front surface of the vertical plate 4, and the second synchronous belt 25 passes through the vertical plate 4. A set of through holes at the top of the second support plate 2 can drive the second drive wheel 24 to rotate when the second servo motor 22 is driven to move. The second synchronous belt 25 moves accordingly. The second synchronous belt 25 is fixed to the third slide block 27 by the second pressure plate 26. The upper end of the rear surface of the third slide block 27 is provided with a third slider 28 that cooperates with the first slide rail 8. The lower end of the rear surface of the third slide block 27 is provided with a fourth slider 29 that cooperates with the second slide rail 9. The third slide block 27 is also connected to the second mounting plate 30, which is used to connect external material clamps.

[0033] The third pushing unit includes a third driving mechanism, which is mounted on the second mounting bracket 7. Specifically, the third driving mechanism includes a third servo motor 32 and a third reducer 33 connected together. The third driving mechanism can drive the third driving wheel 34 to rotate. The output end of the third reducer 33 is connected to the third driving wheel 34 via a third tensioning sleeve. The third driving wheel 34 is connected to the driven wheel in the third driven wheel mechanism 36 via a third synchronous belt 35. The base of the third driven wheel mechanism 36 is fixed to the front surface of the vertical plate 4. The third synchronous belt 35 passes through the... A set of through holes is provided on the first support plate 1. When the third servo motor 32 is driven to operate, it can drive the third drive wheel 34 to rotate, and the third synchronous belt 35 moves accordingly. The third synchronous belt 35 is fixed on the fourth slide block 38 by the third pressure plate 37. The upper end of the rear surface of the fourth slide block 38 is provided with a fifth slider 39 that cooperates with the first slide rail 8. The lower end of the rear surface of the fourth slide block 38 is provided with a sixth slider 40 that cooperates with the second slide rail 9. The fourth slide block 38 is also connected to the third mounting plate 41, which is used to connect external material clamps.

[0034] The specific structures of the second driven wheel mechanism 31 and the third driven wheel mechanism 36 are similar to those of the first driven wheel mechanism 15, and will not be described in detail here.

[0035] In order to record the position origin and motion point of the three servo motors, three sets of photoelectric sensors 47 are provided on the lower surface of the second horizontal plate 5. Each set of photoelectric sensors 47 includes multiple photoelectric sensors 47 spaced apart. The photoelectric sensors 47 are mounted on a sensor mounting base 46, which is mounted on the second horizontal plate 5. The three sets of photoelectric sensors 47 are at different heights. Detection plates 45 are respectively provided on the first mounting plate 21, the second mounting plate 30, and the third mounting plate 41. The three detection plates 45 are used in conjunction with the three sets of photoelectric sensors 47 to record the position origin and motion point of the three servo motors respectively.

[0036] In practical use, material clamps are externally connected to the first mounting plate 21, the second mounting plate 30, and the third mounting plate 41, respectively. When the first servo motor 10 is driven, the material clamp connected to the first mounting plate 21 can move in the left-right direction to achieve the material pushing operation; when the second servo motor 22 is driven, the material clamp connected to the second mounting plate 30 can move in the left-right direction to achieve the material pushing operation; when the third servo motor 32 is driven, the material clamp connected to the third mounting plate 41 can move in the left-right direction to achieve the material pushing operation. All three servo motors can be driven simultaneously to meet actual usage requirements.

[0037] The feeding device involved in this application has three feeding units, which are cleverly integrated to ensure that the three feeding units do not interfere with each other. Furthermore, the movement of the material carried by one feeding unit basically covers the sum of the movement of the materials carried by the other two feeding units. The device can move three sets of materials at the same time, which can meet the actual use requirements.

[0038] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A feeding device, characterized in that: The device includes a frame comprising a first support plate and a second support plate arranged opposite each other and spaced apart. A vertical plate is connected between the rear ends of the two support plates. Multiple connecting portions are spaced apart on the rear surface of the vertical plate to fix the frame at a preset position for mounting the feeding device. Two equal-length slide rails, designated as the first slide rail and the second slide rail, are spaced apart on the front surface of the vertical plate from top to bottom. Each slide rail is arranged in a left-right direction, with the two slide rails corresponding to each other. The feeding device includes three feeding units, designated as the first feeding unit, the second feeding unit, and the third feeding unit. Each of the three feeding units can slide along two slide rails. The first feeding unit's material travel covers the entire range of the two slide rails. The third feeding unit and the second feeding unit are arranged sequentially in a left-right direction, and their material travel covers a portion of the range of the two slide rails, respectively. The three feeding units do not interfere with each other.

2. The feeding device according to claim 1, characterized in that: A first mounting bracket is connected to the second support plate, and a second mounting bracket is connected to the first support plate. The first mounting bracket is located on the right side of the second support plate, and the second mounting bracket is located on the left side of the first support plate.

3. The feeding device according to claim 2, characterized in that: The first pushing unit includes a first driving mechanism, which is mounted on the first mounting bracket. The first driving mechanism can drive the first driving wheel to rotate. The first driving wheel is connected to the driven wheel in the first driven wheel mechanism via a first synchronous belt. The base of the first driven wheel mechanism is fixed at the lower end of the right surface of the first support plate. The first synchronous belt passes through a set of through holes in the lower part of the second support plate. When the first servo motor is driven, it can drive the first driving wheel to rotate, and the first synchronous belt moves accordingly. The first synchronous belt is fixed on the second slide block via a first pressure plate. The rear surface of the second slide block is provided with a second slider that cooperates with the second slide rail. The rear surface of the first slide block is provided with a first slider that cooperates with the first slide rail. The first slide block and the second slide block are spaced apart in the vertical direction. The first slide block is connected to the upper end of the first mounting plate, and the second slide block is connected to the lower end of the first mounting plate. The first mounting plate is used to connect an external material clamp. The distance between the first slide block and the second slide block ensures that the first mounting plate can move in the left and right direction within the entire range of the first and second slide rails.

4. The feeding device according to claim 3, characterized in that: The second pushing unit includes a second driving mechanism, which is mounted on the first mounting bracket. The second driving mechanism can drive the second driving wheel to rotate. The second driving wheel is connected to the driven wheel in the second driven wheel mechanism via a second synchronous belt. The base of the second driven wheel mechanism is fixed on the front surface of the vertical plate. The second synchronous belt passes through a set of through holes in the upper part of the second support plate. When the second servo motor is driven to move, it can drive the second driving wheel to rotate, and the second synchronous belt moves accordingly. The second synchronous belt is fixed on the third slide block via a second pressure plate. The upper end of the rear surface of the third slide block is provided with a third slider that cooperates with the first slide rail. The lower end of the rear surface of the third slide block is provided with a fourth slider that cooperates with the second slide rail. The third slide block is also connected to a second mounting plate, which is used to connect an external material clamp.

5. The feeding device according to claim 4, characterized in that: The third pushing unit includes a third driving mechanism, which is mounted on the second mounting bracket. The third driving mechanism can drive the third driving wheel to rotate. The third driving wheel is connected to the driven wheel in the third driven wheel mechanism via a third synchronous belt. The base of the third driven wheel mechanism is fixed on the front surface of the vertical plate. The third synchronous belt passes through a set of through holes provided on the first support plate. When the third servo motor is driven, it can drive the third driving wheel to rotate, and the third synchronous belt moves accordingly. The third synchronous belt is fixed on the fourth slide block via a third pressure plate. The upper end of the rear surface of the fourth slide block is provided with a fifth slider that cooperates with the first slide rail, and the lower end of the rear surface of the fourth slide block is provided with a sixth slider that cooperates with the second slide rail. The fourth slide block is also connected to a third mounting plate, which is used to connect external material clamps.

6. The feeding device according to claim 3, characterized in that: The first driven wheel mechanism includes a base, the base including two flat plates arranged parallel to each other along the vertical direction, referred to as the upper plate and the lower plate respectively, the two ends of the connecting shaft are respectively mounted on the two flat plates, and a driven wheel is connected to the connecting shaft between the two flat plates via a bearing. A retaining ring is also provided on the connecting shaft to prevent the bearing from moving along the connecting shaft.

7. The feeding device according to claim 6, characterized in that: The first driven wheel mechanism also includes a tensioning mechanism, the structure of which is as follows: a slide rail is provided in the upper plate, the slide rail is arranged in the left-right direction and passes through the right end face of the upper plate, and a slide rail is also provided at the corresponding position on the lower plate. The two ends of the connecting shaft are respectively assembled at the two slide rails. A baffle is fixed at the right end face of the upper plate and a baffle is also fixed at the right end face of the lower plate to restrict the travel of the connecting shaft, so that it can only move in the slide rail. Connecting holes are provided at both the upper and lower ends of the connecting shaft. Two bolts pass through the two through holes provided on the base. One end of the bolt is threaded to the corresponding connecting hole, and the other end of the bolt is provided with a limiting block. The size of the limiting block is larger than the size of the corresponding through hole. When the bolt is turned, it can drive the connecting shaft to move in the slide rail to adjust the tension of the first synchronous belt.

8. The feeding device according to claim 5, characterized in that: The first drive mechanism includes a first servo motor and a first reducer connected together, and the output end of the first reducer is connected to the first drive wheel via a first tension sleeve; the second drive mechanism includes a second servo motor and a second reducer connected together, and the output end of the second reducer is connected to the second drive wheel via a second tension sleeve; the third drive mechanism includes a third servo motor and a third reducer connected together, and the output end of the third reducer is connected to the third drive wheel via a third tension sleeve.

9. The feeding device according to claim 8, characterized in that: A first horizontal plate is connected between the top ends of the first support plate and the second support plate, and a second horizontal plate is connected between the bottom ends of the first support plate and the second support plate.

10. The feeding device according to claim 9, characterized in that: Three sets of photoelectric sensors are provided on the lower surface of the second horizontal plate. Each set of photoelectric sensors includes multiple photoelectric sensors arranged at intervals. The photoelectric sensors are mounted on a sensor mounting base, which is mounted on the second horizontal plate. The three sets of photoelectric sensors are at different heights. Detection plates are provided on the first mounting plate, the second mounting plate, and the third mounting plate, and the three detection plates are used in conjunction with the three sets of photoelectric sensors respectively.

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