Tray driving and positioning system for circulating conveying line

Abstract

The invention discloses a tray driving and positioning system for a circulating conveying line, and belongs to the technical field of circulating conveying lines. Comprising a driving mechanism for driving a tray mechanism to move on an annular guide rail; the stopping mechanism is used for stopping the tray mechanism; and the positioning mechanism is used for positioning the tray mechanism. The tray conveying device has the beneficial effects that the driving motor drives the tray through cooperation of the chain and the chain wheel, the tray moving precision is improved, the stopping mechanism and the positioning assembly are arranged, the tray positioning precision is guaranteed, and therefore normal operation of automatic production is guaranteed; a motor torque protection mechanism is arranged, when the motor is overloaded, automatic shutdown is achieved, and the motor is protected against damage; and the tensioning mechanism is arranged, so that the tensioning adjustment of the driving chain can be realized, and the normal transmission of the chain is ensured.

Description

Technical Field

[0001] The invention relates to a tray driving and positioning system for a circulating conveyor line, belonging to the technical field of circulating conveyor lines. Background Art

[0002] In automated industrial production, conveyor lines for material turnover are indispensable. The use of automatic production lines can save a lot of manpower and material resources for enterprises, thereby significantly reducing production costs. Traditional conveyor lines mostly use belt drive, which is prone to slippage, resulting in low positioning accuracy of the conveyor line, affecting the normal progress of automated production. Summary of the invention

[0003] In order to solve the defects of the prior art, the purpose of the present invention is to provide a pallet drive positioning system for a circulating conveyor line, in which a chain replaces a belt and is equipped with a stop mechanism and a positioning mechanism to ensure the movement accuracy of the pallet mechanism and ensure the normal progress of automated production.

[0004] The technical solution of the present invention is: a tray driving positioning system for a circulating conveyor line, comprising:

[0005] A driving mechanism, driving the tray mechanism to move on the annular guide rail;

[0006] A stopping mechanism is used to stop the pallet mechanism;

[0007] A positioning mechanism is used to position the tray mechanism.

[0008] The driving mechanism includes a driving motor, an output end of the driving motor is connected to a driving shaft through a reducer, a driving wheel and a driving sprocket are fixed on the driving shaft, two ends of the driving chain are engaged with the driving sprocket and the driven sprocket, the driving chain drives the tray mechanism to move along the annular guide rail, a plurality of retractable driving columns are evenly distributed on the periphery of the driving wheel, the driving column radially penetrates through a sleeve fixed in the driving wheel, the driving column is connected to a limit block, the limit block is in detachable contact with the sleeve, an inner cavity for accommodating the limit block and the limit spring is opened in the driving wheel, and two ends of the limit spring are respectively connected to the limit block and the inner cavity wall.

[0009] The frame is provided with a motor torque protection mechanism for overload protection of the drive motor, and the motor torque protection mechanism includes a detection sensor for monitoring the position of the torque arm, the detection sensor is connected to a controller for controlling the start and stop of the drive motor, the torque arm is connected to a reducer, the detection sensor is fixed on a bracket, the bracket is fixed to the bottom of a base, the top end of a sleeve is fixed to a top plate of the base, the top end of a compression spring is connected to a top inside the sleeve, the bottom end of the compression spring is crimped onto the torque arm, an adjusting bolt passes through the top plate, the sleeve, the compression spring, the torque arm and the bottom plate of the base from top to bottom in sequence, and a nut connected to the adjusting bolt is provided at the bottom of the bottom plate.

[0010] The driving sprocket is a double-row driving sprocket, the driving chain is a three-row driving chain, the double-row driving sprocket is meshed with the side driving chains on both sides of the three-row driving chain, and the frame is provided with wear-resistant support bars for supporting the three-row driving chain.

[0011] The tray mechanism includes a support plate and side plates fixed on both sides of the support plate, the side plates are provided with rollers clamped at both ends of the annular guide rail and rollingly connected to the annular guide rail, positioning blocks are also fixed on both sides of the support plate, the positioning ends of the positioning blocks are provided with arc-shaped notches, the arc-shaped notches are provided with driving jacks that cooperate with the driving column, the middle driving chain in the three-row driving chains is meshed with the accumulating pulley, the accumulating pulley is rotatably connected to the shaft, and the two ends of the shaft are fixed to the support plate by installing side plates, an accumulating force adjusting nut and an accumulating force adjusting spring are provided between the accumulating pulley and the installing side plate on one side, the accumulating force adjusting nut is threadedly connected to the shaft, and the two ends of the accumulating force adjusting spring are respectively connected to the accumulating force adjusting nut and a friction plate, and the friction plate is in contact with the accumulating pulley.

[0012] The stopping mechanism comprises a stopping mechanism a cooperating with the positioning mechanism, and a stopping mechanism b cooperating with the driving wheel.

[0013] The stop plate on the stop mechanism a cooperates with the baffle fixed on the supporting plate, and the stop plate is telescopically arranged on the moving path of the baffle.

[0014] The stopping mechanism b includes a stopping swing arm, a stopping end of the stopping swing arm is provided with a stopping inclined surface, the stopping swing arm is rotatably connected to a stopping base via a rotating shaft, two ends of a stopping spring are respectively connected to the stopping swing arm and the stopping base, a limiting frame is fixed on the stopping base for limiting the rotation of the stopping swing arm beyond the travel, and the stopping base is fixed on the frame.

[0015] The positioning mechanism includes a positioning rail fixed on the positioning base, a positioning plate slidably connected to the positioning rail through a slider, a positioning cylinder fixed on the positioning base, an output end of the positioning cylinder connected to the positioning plate, and a positioning groove is provided at the positioning end of the positioning plate, which is used to position the positioning column on the side plate.

[0016] The frame is provided with a tensioning mechanism for tensioning the driving chain, and the tensioning mechanism specifically includes a tensioning mounting box, the tensioning mounting box passes through a plurality of fixed shafts at fixed positions, the fixed tensioning idler wheel is rotatably connected to the tensioning mounting box via the fixed shaft, the movable tensioning idler wheel is rotatably connected to the movable seat via the movable shaft, the movable shaft passes through and can move along the strip hole on the tensioning mounting box, the end of the movable shaft is connected to a pointer, the end of the pointer is provided with a scale fixed to the tensioning mounting box, the movable seat is connected to a tensioning screw, the tensioning screw extends to the outside of the tensioning mounting box, a tensioning sleeve is fixed to the outside of the tensioning mounting box, the tensioning screw passes through the tensioning sleeve, a tensioning spring is sleeved outside the tensioning sleeve, the two ends of the tensioning spring are respectively connected to the tensioning sleeve and the tensioning nut, and the tensioning nut is threadedly connected to the tensioning screw.

[0017] The beneficial effects of the present invention are: the driving motor drives the pallet through the chain and sprocket, thereby improving the moving accuracy of the pallet, and setting a stop mechanism and a positioning component to ensure the positioning accuracy of the pallet, thereby ensuring the normal progress of automated production; a motor torque protection mechanism is set, which automatically stops the motor when it is overloaded to protect the motor from damage; a tensioning mechanism is set to realize the tension adjustment of the driving chain to ensure the normal transmission of the chain. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure diagram of the circulating conveyor line to which the present invention is applied;

[0019] Figure 2 The internal structure diagram of the circulating conveyor line to which the present invention is applied;

[0020] Figure 3 A view of the driving mechanism of the present invention;

[0021] Figure 4 A cross-sectional view of a circulating conveyor line to which the present invention is applied;

[0022] Figure 5 It is the structural diagram of the tray mechanism;

[0023] Figure 6 The structural diagram of the driving wheel;

[0024] Figure 7 It is the structural diagram of the stop mechanism b;

[0025] Figure 8 It is the structural diagram of the positioning mechanism;

[0026] Fig. 9 The structure of the tensioning mechanism Figure 1 ;

[0027] Fig.10 The structure of the tensioning mechanism Figure 2 .

[0028] The accompanying drawings are marked as follows: 1. annular guide rail, 2. tray mechanism, 2.1. support plate, 2.2. side plate, 2.3. positioning block, 2.4. driving socket, 2.5. accumulation pulley, 2.6. shaft, 2.7. mounting side plate, 2.8. accumulation force adjustment nut, 2.9. accumulation force adjustment spring, 2.10. friction plate, 2.11. baffle, 2.12. positioning column, 2.13. roller, 3.1. driving motor, 3.2. driving shaft, 3.3. driving wheel, 3.4. driving sprocket, 3.5. driven sprocket, 3.6. driving column, 3.7. limiting block, 3.8. bushing, 3.9. limiting spring, 3.10. driving chain, 4.1. moment arm, 4.2. detection sensor, 4.3. bracket , 4.4, base, 4.5, sleeve, 4.6, compression spring, 4.7, adjusting bolt, 5, stop mechanism a, 5.1, stop plate, 6, frame, 7, stop mechanism b, 7.1, stop base, 7.2, stop swing arm, 7.3, limit frame, 7.4, stop spring, 7.5, shaft, 8.1, positioning base, 8.2, positioning guide rail, 8.3, slider, 8.4, positioning plate, 8.5, positioning cylinder, 8.6, positioning groove, 9.1, tensioning mounting box, 9.2, fixed tensioning idler wheel, 9.3, movable tensioning idler wheel, 9.4, movable seat, 9.5, pointer, 9.6, scale, 9.7, tensioning screw, 9.8, tensioning sleeve, 9.9, tensioning spring, 9.10, tensioning nut. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-10 The present invention is further described:

[0030] A tray drive positioning system for a circulating conveyor line, wherein a tray mechanism 2 is slidably connected to a circular guide rail 1 under the action of a driving mechanism, and a stopping mechanism and a positioning mechanism are also provided on a frame 6, which are used to stop and position the tray mechanism respectively.

[0031] The driving mechanism includes a driving motor 3.1, the output end of which is connected to a driving shaft 3.2 via a reducer, a driving wheel 3.3 and a driving sprocket 3.4 are fixed on the driving shaft 3.2, and two ends of a driving chain 3.10 are meshed with the driving sprocket 3.4 and the driven sprocket 3.5, and the driving chain 3.10 drives the tray mechanism 2 to move along the annular guide rail 1, the driving sprocket 3.4 is a double-row driving sprocket, and the driving chain 3.10 is a three-row driving chain, and the double-row driving sprocket is meshed with the side driving chains on both sides of the three-row driving chain, and the frame 6 is provided with a wear-resistant support bar for supporting the three-row driving chain, and the material of the wear-resistant support bar is preferably polyurethane, and the wear-resistant support bar can also play a role in reducing friction. A plurality of retractable driving columns 3.6 are evenly distributed on the periphery of the driving wheel 3.3. The driving columns 3.6 radially penetrate a shaft sleeve 3.8 fixed in the driving wheel 3.3. The driving columns 3.6 are connected to a limit block 3.7. The limit block 3.7 is in detachable contact with the shaft sleeve 3.8. An inner cavity for accommodating the limit block 3.7 and a limit spring 3.9 is opened in the driving wheel 3.3. Both ends of the limit spring 3.9 are respectively connected to the limit block 3.7 and the inner cavity wall.

[0032] The tray mechanism 2 includes a support plate 2.1 and side plates 2.2 fixed on both sides of the support plate 2.1. The side plates 2.2 are provided with rollers 2.13 clamped at both ends of the annular guide rail 1 and rollingly connected to the annular guide rail 1. Positioning blocks 2.3 are also fixed on both sides of the support plate 2.1. The positioning ends of the positioning blocks 2.3 are provided with arc-shaped notches. The arc-shaped notches are provided with drive sockets 2.4 that cooperate with the drive columns 3.6. The middle drive chain in the three-row drive chain is meshed with the accumulation pulley 2.5, thereby preventing the accumulation pulley 2.5 from being in contact with the accumulation pulley 2.5. The accumulation pulley 2.5 is rotatably connected to the shaft 2.6 due to the interference of the driving sprocket 3.4. Both ends of the shaft 2.6 are fixed to the support plate 2.1 through the mounting side plates 2.7. An accumulation force adjusting nut 2.8 and an accumulation force adjusting spring 2.9 are provided between the accumulation pulley 2.5 and the mounting side plates 2.7 on one side. The accumulation force adjusting nut 2.8 is threadedly connected to the shaft 2.6. Both ends of the accumulation force adjusting spring 2.9 are respectively connected to the accumulation force adjusting nut 2.8 and the friction plate 2.10. The friction plate 2.10 is in contact with the accumulation pulley 2.5.

[0033] The stop mechanism includes a stop mechanism a5 that cooperates with the positioning mechanism, and a stop mechanism b7 that cooperates with the driving wheel 3.3. The stop plate 5.1 on the stop mechanism a5 cooperates with the baffle 2.11 fixed on the support plate 2.1, and the stop plate 5.1 is retractably arranged on the moving path of the baffle 2.11. The stop mechanism a5 is a prior art, and the patent announcement number CN209455627U discloses the specific structure of the stop mechanism a5, which will not be repeated in this application. The stopping mechanism b7 includes a stopping swing arm 7.2, the stopping end of which is provided with a stopping inclined surface, the stopping swing arm 7.2 is rotationally connected to the stopping base 7.1 via a rotating shaft 7.5, the two ends of a stopping spring 7.4 are respectively connected to the stopping swing arm 7.2 and the stopping base 7.1, a limiting frame 7.3 is fixed on the stopping base 7.1 for limiting the rotation of the stopping swing arm 7.2, and the stopping base 7.1 is fixed on the frame 6.

[0034] The positioning mechanism includes a positioning guide rail 8.2 fixed on the positioning base 8.1, a positioning plate 8.4 slidably connected to the positioning guide rail 8.2 through a slider 8.3, a positioning cylinder 8.5 fixed on the positioning base 8.1, an output end of the positioning cylinder 8.5 connected to the positioning plate 8.4, and a positioning groove 8.6 is provided at the positioning end of the positioning plate 8.4, and the positioning groove 8.6 is used to position the positioning column 2.12 on the side plate 2.2.

[0035] The precise positioning of the tray mechanism 2 on the annular guide rail 1 is achieved through two action rhythms: one is blocking and the other is positioning; the blocking action is completed by the blocking mechanism a5, specifically, the cylinder drives the blocking plate 5.1 to rise, so that the blocking plate 5.1 rises to the moving path of the baffle 2.11, and when the baffle 2.11 moves to the blocking plate 5.1, the two contact, and the blocking plate 5.1 blocks the continued movement of the baffle 2.11, that is, the tray mechanism 2 stops moving as a whole, and the driving sprocket 3.4 drives the accumulation pulley 2.5 to overcome the resistance of the friction plate 2.10 and idle; the positioning action is specifically that the positioning cylinder 8.5 drives the positioning plate 8.4 to move up along the positioning guide rail 8.2, and the positioning groove 8.6 at the top of the positioning plate 8.4 is inserted into the positioning column 2.12 of the tray mechanism 2, that is, the positioning column 2.12 is located in the positioning groove 8.6, so that the relative position between the positioning groove 8.6 and the positioning column 2.12 is fixed, thereby achieving the purpose of precise positioning of the tray mechanism 2. When the pallet mechanism 2 needs to be released, the positioning cylinder 8.5 drives the positioning plate 8.4 to move downward, and the cylinder drives the stop plate 5.1 to move downward and leave the moving path of the baffle 2.11, and the pallet mechanism 2 can continue to move along the annular guide rail 1 driven by the drive chain 3.10. The power of the tray mechanism 2 relies on the friction between the accumulation pulley 2.5 and the friction plate 2.10. When the tray mechanism 2 flips, its gravity is greater than the friction, which will cause the flipping speed to be too fast. At this time, the movement of the tray mechanism 2 is not controlled by the drive motor 3.1, resulting in the movement of the tray mechanism 2 being synchronized with the operating part of the drive motor 3.1, thereby being unable to accurately control the position of the tray mechanism 2 on the drive chain 3.10. To avoid the above phenomenon, a drive wheel 3.4 is provided, and the drive motor 3.1 controls the synchronization of the movement of the tray mechanism 2 through the drive wheel 3.4. The tray mechanism 2 is driven to flip downward through the drive wheel 3.3, and the drive wheel 3.3 is plugged into the drive socket 2.4 of the tray mechanism 2 through the outer peripheral drive column 3.6 to realize the driving of the tray mechanism 2. To ensure that the drive column 3.6 can be smoothly plugged into the drive socket 2.4, the flipping The front tray mechanism 2 needs to stop moving, that is, it is stopped by the stopping mechanism b7. The specific action process of the above-mentioned stopping and driving is as follows: the positioning column 2.12 at the bottom of the tray mechanism 2 is blocked by the stopping slope when passing through the stopping slope at the upper end of the stopping swing arm 7.2, so that the tray mechanism 2 cannot move, and the driving wheel 3.3 is located at the arc-shaped notch of the positioning block 2.3 and is in a rotating state. The driving column 3.6 enters the arc-shaped notch and is compressed. When it rotates to be opposite to the driving socket 2.4, the driving column 3.6 extends out and inserts into the driving socket 2.4. The driving column 3.6 drives the positioning column 2.12 of the tray mechanism 2 to move along the stopping slope and compresses the stopping spring 7.4 through the stopping swing arm 7.2. After the positioning column 2.12 is separated from the stopping slope, the stopping swing arm 7.2 is reset, and the tray mechanism 2 realizes a flipping action driven by the positioning column 2.12 of the driving wheel 3.3.

[0036] The frame 6 is provided with a motor torque protection mechanism for overload protection of the drive motor 3.1. The motor torque protection mechanism includes a detection sensor 4.2 for monitoring the position of the torque arm 4.1. The detection sensor 4.2 is connected to a controller for controlling the start and stop of the drive motor 3.1. The torque arm 4.1 is connected to a reducer. The detection sensor 4.2 is fixed on a bracket 4.3. The bracket 4.3 is fixed on the bottom of a base 4.4. The top of a sleeve 4.5 is fixed on the top plate of the base 4.4. The top of a compression spring 4.6 is connected to the top of the sleeve 4.5. The bottom of the compression spring 4.6 is crimped onto the torque arm 4.1. An adjusting bolt 4.7 passes through the top plate, the sleeve 4.5, the compression spring 4.6, the torque arm 4.1 and the bottom plate of the base 4.4 from top to bottom. A nut connected to the adjusting bolt is provided at the bottom of the bottom plate. Figure 3 As shown, the driving motor 3.1 drives the driving chain 3.10 to rotate counterclockwise. When the motor is overloaded, the driving shaft 3.2 cannot rotate counterclockwise normally. At this time, the driving motor 3.1 and the reducer will rotate clockwise around the driving shaft 3.2, driving the torque arm 4.1 to rotate clockwise. After the torque arm 4.1 rotates, it leaves the detection range of the detection sensor 4.2. The detection sensor 4.2 sends a signal to the controller, and the controller sends a stop command to the driving motor 3.1, and the driving motor 3.1 stops running, thereby realizing overload protection for the driving motor 3.1.

[0037] The frame 6 is provided with a tensioning mechanism for tensioning the driving chain 3.10, and the tensioning mechanism specifically comprises a tensioning mounting box 9.1, wherein the tensioning mounting box 9.1 passes through a plurality of fixed shafts at fixed positions, a fixed tensioning idler wheel 9.2 is rotatably connected to the tensioning mounting box 9.1 via the fixed shaft, and a movable tensioning idler wheel 9.3 is rotatably connected to a movable seat 9.4 via a movable shaft, and the movable shaft passes through and can move along the strip-shaped hole on the tensioning mounting box 9.1, and the end of the movable shaft is connected to a pointer 9.5, and the pointer A scale 9.6 fixed on the tensioning mounting box 9.1 is provided at the end of 9.5, the movable seat 9.4 is connected to the tensioning screw 9.7, the tensioning screw 9.7 extends to the outside of the tensioning mounting box 9.1, a tensioning sleeve 9.8 is fixed to the outside of the tensioning mounting box 9.1, the tensioning screw 9.7 penetrates the tensioning sleeve 9.8, a tensioning spring 9.9 is sleeved outside the tensioning sleeve 9.8, and the two ends of the tensioning spring 9.9 are respectively connected to the tensioning sleeve 9.8 and the tensioning nut 9.10, and the tensioning nut 9.10 is threadedly connected to the tensioning screw 9.7. When the driving sprocket 3.4 is loose, it will cause the chain to jump teeth. In order to avoid the above phenomenon, a chain tensioning mechanism is set, such as Fig. 9 and Fig.10As shown, during the tensioning operation, the tensioning nut 9.10 is turned to move to the left, the tensioning spring 9.9 is compressed, the elastic force increases, and the tensioning nut 9.10 is pushed to drive the tensioning screw 9.7 to move right, and the tensioning screw 9.7 drives the movable tensioning idler wheel 9.3 to move right, increasing the distance with the left fixed tensioning idler wheel 9.2, so as to achieve the tensioning of the driving sprocket 3.4. By observing the pointing position of the pointer 9.5 on the scale 9.6, the tension of the tensioning spring 9.9 can be understood and accurately adjusted.

[0038] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A pallet drive positioning system for a circulating conveyor line, characterized in that: include: A driving mechanism, driving the tray mechanism (2) to move on the annular guide rail (1); A stopping mechanism for stopping the tray mechanism (2); The positioning mechanism positions the tray mechanism (2).

2. The tray drive positioning system for a circulating conveyor line according to claim 1, characterized in that: The driving mechanism comprises a driving motor (3.1), the output end of the driving motor (3.1) is connected to a driving shaft (3.2) via a reducer, a driving wheel (3.3) and a driving sprocket (3.4) are fixed on the driving shaft (3.2), two ends of a driving chain (3.10) are engaged with the driving sprocket (3.4) and the driven sprocket (3.5), the driving chain (3.10) drives the tray mechanism (2) to move along the annular guide rail (1), and a plurality of retractable driving wheels (3.3) are evenly distributed on the periphery of the driving wheel (3.3). A driving column (3.6) is provided, wherein the driving column (3.6) radially penetrates a shaft sleeve (3.8) fixed in the driving wheel (3.3), the driving column (3.6) is connected to a limit block (3.7), the limit block (3.7) and the shaft sleeve (3.8) are in detachable contact, an inner cavity for accommodating the limit block (3.7) and a limit spring (3.9) is provided in the driving wheel (3.3), and two ends of the limit spring (3.9) are respectively connected to the limit block (3.7) and the inner cavity wall.

3. The tray drive positioning system for a circulating conveyor line according to claim 2, characterized in that: The frame (6) is provided with a motor torque protection mechanism for overload protection of the drive motor (3.1), the motor torque protection mechanism comprising a detection sensor (4.2) for monitoring the position of the moment arm (4.1), the detection sensor (4.2) being connected to a controller for controlling the start and stop of the drive motor (3.1), the moment arm (4.1) being connected to a reducer, the detection sensor (4.2) being fixed on a bracket (4.3), the bracket (4.3) being fixed on the bottom of a base (4.4), the top end of a sleeve (4.5) being fixed on a top plate of the base (4.4), the top end of a compression spring (4.6) being connected to an inner top of the sleeve (4.5), the bottom end of the compression spring (4.6) being crimped onto the moment arm (4.1), an adjusting bolt (4.7) being passed through the top plate, the sleeve (4.5), the compression spring (4.6), the moment arm (4.1) and the bottom plate of the base (4.4) in sequence from top to bottom, and a nut connected to the adjusting bolt being provided at the bottom of the bottom plate.

4. The tray drive positioning system for a circulating conveyor line according to claim 2, characterized in that: The driving sprocket (3.4) is a double-row driving sprocket, the driving chain (3.10) is a three-row driving chain, the double-row driving sprocket is meshed with the side driving chains on both sides of the three-row driving chain, and the frame (6) is provided with wear-resistant support bars for supporting the three-row driving chain.

5. The tray drive positioning system for a circulating conveyor line according to claim 4, characterized in that: The tray mechanism (2) comprises a support plate (2.1) and side plates (2.2) fixed on both sides of the support plate (2.1), the side plates (2.2) being provided with rollers (2.13) clamped at both ends of the annular guide rail (1) and rollingly connected to the annular guide rail (1), positioning blocks (2.3) being fixed on both sides of the support plate (2.1), the positioning ends of the positioning blocks (2.3) being provided with arc-shaped notches, the arc-shaped notches being provided with drive sockets (2.4) cooperating with the drive columns (3.6), the middle drive chains in the three-row drive chains being meshed with the accumulation pulleys (2.5), the The accumulation pulley (2.5) is rotatably connected to the shaft (2.6), and both ends of the shaft (2.6) are fixed to the support plate (2.1) through the mounting side plate (2.7). An accumulation force adjustment nut (2.8) and an accumulation force adjustment spring (2.9) are provided between the accumulation pulley (2.5) and the mounting side plate (2.7) on one side. The accumulation force adjustment nut (2.8) is threadedly connected to the shaft (2.6), and both ends of the accumulation force adjustment spring (2.9) are respectively connected to the accumulation force adjustment nut (2.8) and the friction plate (2.10), and the friction plate (2.10) is in contact with the accumulation pulley (2.5).

6. The tray drive positioning system for a circulating conveyor line according to claim 5, characterized in that: The stopping mechanism comprises a stopping mechanism a (5) cooperating with the positioning mechanism, and a stopping mechanism b (7) cooperating with the driving rotating wheel (3.3).

7. The tray drive positioning system for a circulating conveyor line according to claim 6, characterized in that: The stop plate (5.1) on the stop mechanism a (5) cooperates with a baffle (2.11) fixed on the support plate (2.1), and the stop plate (5.1) is telescopically arranged on the moving path of the baffle (2.11).

8. The tray drive positioning system for a circulating conveyor line according to claim 6, characterized in that: The stop mechanism b (7) comprises a stop swing arm (7.2), a stop end of the stop swing arm (7.2) is provided with a stop inclined surface, the stop swing arm (7.2) is rotationally connected to a stop base (7.1) via a rotating shaft (7.5), two ends of a stop spring (7.4) are respectively connected to the stop swing arm (7.2) and the stop base (7.1), a limit frame (7.3) for limiting the rotation of the stop swing arm (7.2) beyond a travel is fixed on the stop base (7.1), and the stop base (7.1) is fixed on a frame (6).

9. The tray drive positioning system for a circulating conveyor line according to claim 8, characterized in that: The positioning mechanism comprises a positioning rail (8.2) fixed on a positioning base (8.1); a positioning plate (8.4) is slidably connected to the positioning rail (8.2) via a slider (8.3); a positioning cylinder (8.5) is fixed on the positioning base (8.1); an output end of the positioning cylinder (8.5) is connected to the positioning plate (8.4); a positioning groove (8.6) is provided at the positioning end of the positioning plate (8.4); and the positioning groove (8.6) is used to position a positioning column (2.12) on a side plate (2.2).

10. The tray drive positioning system for a circulating conveyor line according to claim 2, characterized in that: The frame (6) is provided with a tensioning mechanism for tensioning the driving chain (3.10), and the tensioning mechanism specifically comprises a tensioning installation box (9.1), wherein a plurality of fixed rotating shafts at fixed positions are passed through the tensioning installation box (9.1), a fixed tensioning idler wheel (9.2) is rotatably connected to the tensioning installation box (9.1) via the fixed rotating shaft, and a movable tensioning idler wheel (9.3) is rotatably connected to the movable seat (9.4) via the movable rotating shaft, the movable rotating shaft passes through and can move along the strip-shaped hole on the tensioning installation box (9.1), and the end of the movable rotating shaft is connected to a pointer (9.5), and the end of the pointer (9.5) is provided with A scale (9.6) is fixed on the tensioning installation box (9.1), the movable seat (9.4) is connected to a tensioning screw (9.7), the tensioning screw (9.7) extends outside the tensioning installation box (9.1), a tensioning sleeve (9.8) is fixed outside the tensioning installation box (9.1), the tensioning screw (9.7) passes through the tensioning sleeve (9.8), a tensioning spring (9.9) is sleeved outside the tensioning sleeve (9.8), two ends of the tensioning spring (9.9) are respectively connected to the tensioning sleeve (9.8) and a tensioning nut (9.10), and the tensioning nut (9.10) is threadedly connected to the tensioning screw (9.7).

Images