A small automatic production line conveying and positioning mechanism

Abstract

This invention relates to the field of conveying equipment technology, specifically a small automatic production line conveying and positioning mechanism, including a first positioning bracket, a second positioning bracket, a pushing component, a supporting positioning component, and a maintenance component. The first and second positioning brackets are vertically symmetrically arranged. When a conveying pallet needs to be positioned, the conveyor belt first transports the pallet to its approximate position. Then, a telescopic pusher cylinder controls a conical pushing block to push the pallet, causing two second positioning blocks on one side of the pallet to abut against the supporting positioning component. This allows the pallet to adjust its vertical height and horizontal position in conjunction with the first positioning block, achieving rapid positioning of the pallet and reducing wear. In addition, with the cooperation of the maintenance component, the connection between the rotating support shaft and the contact sleeve can be self-lubricated. The overall structure is compact, suitable for small product processing, has high positioning accuracy, and is convenient and hassle-free.

Description

Technical Field

[0001] This invention relates to the field of conveying equipment technology, specifically to a small automatic production line conveying and positioning mechanism. Background Technology

[0002] A production line is the route a product travels during the manufacturing process. It uses a conveyor system to move and control the products that need to be processed. When the product moves to the processing position, it needs to be fixed and aligned by a positioning mechanism to ensure the accuracy and quality of the processing.

[0003] Existing patent CN221050889U discloses a positioning device and a conveyor line. The positioning device includes a first lifting plate, a first lifting drive assembly, a lifting component, and a second lifting drive assembly. The first lifting plate has a second through hole and is located at the drive end of the first lifting drive assembly. The lifting component is located at the drive end of the second lifting drive assembly. When the product moves above the positioning device with the tray, the first lifting drive assembly drives the first lifting plate to rise, lifting the tray away from the conveyor line. Then, the second lifting drive assembly drives the lifting component to rise. The lifting component passes through the second through hole and the first through hole in sequence and protrudes from the first lifting plate, lifting the product in the tray to a suitable height so that the product processing is not affected by the deformation of the tray, thereby ensuring good product processing results. However, both the above positioning mechanism and the conveyor tray positioning mechanism on the market are too large, unsuitable for small products, and slow, reducing cycle time. The tray positioning mechanism requires the tray to be lifted during use, and then positioned by a cylindrical pin. The tolerance of the cylindrical pin leads to poor positioning accuracy. Summary of the Invention

[0004] The purpose of this invention is to provide a small-scale automatic production line conveying and positioning mechanism to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a small automatic production line conveying and positioning mechanism, comprising:

[0006] The first positioning bracket and the second positioning bracket are arranged vertically and symmetrically. A conveyor belt is horizontally provided on the opposite side of the first positioning bracket and the second positioning bracket, and a conveyor tray is horizontally placed on the upper end of the two conveyor belts.

[0007] A push assembly is provided on the side of the second positioning bracket near the conveying tray. The push assembly includes a telescopic push cylinder and a conical push block, one side of which is in contact with the first positioning block.

[0008] A support positioning assembly is horizontally mounted on the side of the first positioning bracket near the conveying tray by bolts. The support positioning assembly includes a mounting base, a rotating support shaft, and a contact sleeve. Support plates are horizontally and movably inserted into both sides of the mounting base. The two sides of the rotating support shaft are respectively movably inserted into the two support plates. The contact sleeve is horizontally and slidably sleeved on the rotating support shaft.

[0009] The maintenance component is located within the mounting base on one side near the support plate, and includes a toggle piston guide rod and a switching piston.

[0010] Preferably, the telescopic push cylinder is horizontally disposed on one side of the second positioning bracket, the telescopic rod of the telescopic push cylinder moves through the second positioning bracket, the conical push block is disposed on the side of the telescopic push cylinder that passes through the second positioning bracket, the conveying tray is provided with a first positioning block on the side of the conical push block, a conical groove is opened on one side of the first positioning block, and one side of the conical push block is inserted into the conical groove.

[0011] Preferably, the first positioning bracket has an assembly groove on the side near the conveying tray, the mounting base is horizontally placed in the assembly groove, the mounting base has a groove on the side near the conveying tray, and two support grooves are symmetrically opened on both sides of the mounting base near the groove. The two support plates are horizontally movably inserted into the two support grooves respectively, and one side of each of the two support plates extends out of the mounting base. Two connecting shafts are symmetrically arranged on both sides of the self-rotating support shaft, and the two connecting shafts are rotatably inserted into the two support plates through two bearings respectively.

[0012] Preferably, the conveying tray is provided with two second positioning blocks symmetrically by bolts on the side near the mounting base. Each of the two second positioning blocks has a mating groove on the side near the contact sleeve. When the conical push block is inserted into the conical groove of the first positioning block and continues to move, the two second positioning blocks are respectively engaged with the outer periphery of the contact sleeve through the mating groove.

[0013] Preferably, two constraint grooves are symmetrically opened on both sides of the support groove, and a slider is provided on the side of the support plate near the constraint groove. The two sliders are respectively movably inserted into the two constraint grooves, and a support spring is provided on the side of the support plate located in the support groove.

[0014] Preferably, the outer periphery of the self-rotating support shaft is symmetrically provided with three sliding grooves, and the side of the contact sleeve that is fitted with the self-rotating support shaft is symmetrically provided with three mounting strips. The three mounting strips are respectively movably inserted into the three sliding grooves. The side of the mounting strip that is inserted into the sliding groove is provided with several ball grooves. Sliding balls are rotatably inserted into the several ball grooves, and one side of the several sliding balls respectively makes rolling contact with the inner sidewall of the sliding groove.

[0015] Preferably, the length of the contact sleeve is less than the length of the self-rotating support shaft. Lightweight return springs are sleeved on both sides of the self-rotating support shaft. The two sides of the lightweight return springs are in contact with the contact sleeve and the support plate, respectively. Two anti-slip plates are symmetrically arranged on both sides of the groove of the mounting base. Two anti-slip sleeves are symmetrically arranged on both sides of the outer circumference of the contact sleeve. When the conveying pallet is positioned, one side of the anti-slip sleeve is in frictional contact with the anti-slip plate.

[0016] Preferably, a guide oil groove is horizontally formed in the support plate on one side of the support spring, the side of the connecting shaft inserted into the support plate is placed in the guide oil groove, two bearings are respectively located on both sides of the guide oil groove, and the piston guide rod is horizontally arranged in the support groove on the side close to the guide oil groove, and the piston guide rod is movably inserted into the guide oil groove.

[0017] Preferably, the upper end of the mounting base has a horizontally formed oil cavity, the piston guide rod has a horizontally formed switching groove, the lower end of the oil cavity has a vertically formed oil filling groove connected to the switching groove, the mounting base has a horizontally formed accumulation groove located between the switching groove and the oil cavity, the upper and lower ends of the accumulation groove are respectively connected to the two sides of the switching groove and have formed a replenishment groove and a replenishment hole, the side of the switching groove near the oil filling groove has a horizontally formed return spring, the side of the return spring is connected to a switching piston, the center of the guide oil groove has a tripod, the side of the tripod has a horizontally formed ejector pin, the ejector pin is inserted into the switching groove and abuts against the switching piston, when the support plate is inserted into the support groove to the maximum extent, the switching piston blocks the side of the replenishment groove connected to the switching groove, and exposes the side of the replenishment hole connected to the switching groove.

[0018] Preferably, a flow divider groove is horizontally formed at the center of the self-rotating support shaft, and a plurality of access holes are formed on one side of the self-rotating support shaft located in the guide oil groove, which is connected to the flow divider groove. A plurality of lubrication holes are formed in the flow divider groove, which is connected to the sliding groove.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] When a pallet needs to be positioned, the conveyor belt first transports the pallet to its approximate position. Then, the telescopic pusher cylinder controls the conical pusher block to push the pallet, causing the two second positioning blocks on one side of the pallet to abut against the support positioning component. This allows the pallet to adjust its height and position in conjunction with the first positioning block, completing the rapid positioning of the pallet and reducing wear. In addition, with the cooperation of the maintenance component, the connection between the self-rotating support shaft and the contact sleeve can be self-lubricated. The overall structure is compact, suitable for small product processing, with high positioning accuracy, and is worry-free and convenient. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 For the present invention Figure 1Schematic diagram of part A;

[0023] Figure 3 This is a side-section diagram of a partial connection of the conveyor tray of the present invention;

[0024] Figure 4 For the present invention Figure 3 Schematic diagram of part B;

[0025] Figure 5 This is a schematic diagram of the installation structure of the conical pusher block of the present invention;

[0026] Figure 6 This is a schematic diagram of the conveyor pallet structure of the present invention;

[0027] Figure 7 This is a schematic diagram of the assembly slot installation structure of the present invention;

[0028] Figure 8 For the present invention Figure 7 Schematic diagram of part C;

[0029] Figure 9 This is a schematic diagram of the installation structure of the self-rotating support shaft and contact sleeve of the present invention;

[0030] Figure 10 For the present invention Figure 9 Schematic diagram of part D;

[0031] Figure 11 This is a schematic diagram of the side-cut structure for mounting the support plate of the present invention;

[0032] Figure 12 For the present invention Figure 11 Schematic diagram of part E;

[0033] Figure 13 For the present invention Figure 12 Schematic diagram of part F;

[0034] Figure 14 This is an exploded view of the contact sleeve installation of the present invention;

[0035] Figure 15 For the present invention Figure 14 Schematic diagram of part G.

[0036] In the diagram: 1. First positioning bracket; 2. Second positioning bracket; 3. Conveyor belt; 4. Conveyor tray; 5. Telescopic push cylinder; 6. Conical push block; 7. First positioning block; 8. Assembly groove; 9. Mounting seat; 10. Second positioning block; 11. Mating groove; 12. Rotation support shaft; 13. Contact sleeve; 14. Sliding groove; 15. Mounting strip; 16. Sliding ball; 17. Support plate; 18. Sliding block; 19. Lightweight return spring; 20. Anti-slip sleeve; 21. Anti-slip plate; 22. Guide oil groove; 23. Piston guide rod; 24. Oil chamber; 25. Switching groove; 26. Oil injection groove; 27. Accumulation groove; 28. Replenishment groove; 29. ​​Switching piston; 30. Return spring; 31. Tripod support; 32. Ejector pin; 33. Diverter groove; 34. Inlet hole; 35. Lubrication hole; 36. Support spring; 37. Connecting shaft. Detailed Implementation

[0037] 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.

[0038] Please see the appendix Figures 1-15 This application provides the following technical solutions.

[0039] Example 1: A small-scale automatic production line conveying and positioning mechanism includes a first positioning bracket 1 and a second positioning bracket 2. The first positioning bracket 1 and the second positioning bracket 2 are arranged vertically and symmetrically. Conveyor belts 3 are horizontally arranged on opposite sides of the first positioning bracket 1 and the second positioning bracket 2. Conveyor trays 4 are horizontally placed on the upper ends of the two conveyor belts 3. During processing, the conveyor trays 4 are horizontally moved between the first positioning bracket 1 and the second positioning bracket 2 by the two conveyor belts 3. The upper ends of the conveyor trays 4 and the first positioning brackets 1 and the second positioning brackets 2 are equipped with compatible electronic positioning modules. When the conveyor trays 4 move between the first positioning brackets 1 and the second positioning brackets 2, the conveying capacity of the conveyor belts 3 can be stopped in time to perform basic positioning of the conveyor trays 4.

[0040] A push assembly is installed to horizontally push the conveyor pallet 4 towards one side of the first positioning bracket 1. The push assembly is located on the side of the second positioning bracket 2 near the conveyor pallet 4. The push assembly includes a telescopic push cylinder 5 and a conical push block 6. One side of the conical push block 6 is in contact with the first positioning block 7. The telescopic push cylinder 5 is horizontally located on one side of the second positioning bracket 2, and its telescopic rod moves through the second positioning bracket 2. The conical push block 6 is located on the side of the telescopic push cylinder 5 that passes through the second positioning bracket 2. The conveyor pallet 4 is located on the side near the conical push block 6. The first positioning block 7 has a conical groove on one side, and the conical push block 6 is inserted into the conical groove. When the conical push block 6 is inserted into the first positioning block 7, the conveyor pallet 4 can be properly aligned due to the adaptive effect of the conical structure. The conical angles of the conical groove and the conical push block 6 can be customized according to actual needs, but it must be ensured that the two are compatible.

[0041] A support and positioning assembly is provided to lift and position the conveyor pallet 4 in conjunction with the conical push block 6 and the first positioning block 7. The support and positioning assembly is horizontally mounted on the side of the first positioning bracket 1 near the conveyor pallet 4 by bolts. The support and positioning assembly includes a mounting base 9, a rotating support shaft 12, and a contact sleeve 13. Support plates 17 are horizontally and movably inserted into both sides of the mounting base 9. Two support plates 17 are movably inserted into both sides of the rotating support shaft 12. The contact sleeve 13 is horizontally and slidably sleeved on the rotating support shaft 12. An assembly groove 8 is opened on the side of the first positioning bracket 1 near the conveyor pallet 4. The mounting base 9 is horizontally placed in the assembly groove 8. A groove is opened on the side of the mounting base 9 near the conveyor pallet 4. Two support grooves are symmetrically opened on both sides of the mounting base 9 near the groove. Two support plates 17 are horizontally and movably inserted into the two support grooves respectively. The mounting base 9 extends out from one side of the self-rotating support shaft 12. Two connecting shafts 37 are symmetrically arranged on both sides of the self-rotating support shaft 12. The two connecting shafts 37 are rotatably inserted into the two support plates 17 through two bearings. Two second positioning blocks 10 are symmetrically arranged on the side of the conveying tray 4 near the mounting base 9 through bolts. The two second positioning blocks 10 are provided with mating grooves 11 on the side of the contact sleeve 13. When the conical push block 6 is inserted into the conical groove of the first positioning block 7 and continues to move, the two second positioning blocks 10 are respectively engaged with the outer periphery of the contact sleeve 13 through the mating grooves 11. The self-rotating support shaft 12 is rotatable. The contact sleeve 13 is sleeved on the upper end of the self-rotating support shaft 12. When the second positioning block 10 contacts the contact sleeve 13, the self-rotating support shaft 12 can rotate, reducing the wear between the second positioning block 10 and the contact sleeve 13 and improving the service life.

[0042] In addition, the height of the conical push block 6 and the contact sleeve 13 is higher than the center point height of the mating groove 11 and the first positioning block 7 in the natural state. When the mating groove 11 is connected with the contact sleeve 13 and the conical push block 6 is connected with the first positioning block 7, the bottom of the conveyor tray 4 is higher than the top of the conveyor belt 3. At the same time, under the clamping action of the two ends of the conical push block 6 and the contact sleeve 13, the horizontal and vertical height positions of the conveyor tray 4 are kept accurate and stable. The vertical distance of the mating groove 11 on the side close to the contact sleeve 13 is greater than the diameter of the contact sleeve 13.

[0043] Two constraint grooves are symmetrically formed on both sides of the support groove. A slider 18 is provided on the side of the support plate 17 closest to the constraint groove. The two sliders 18 are movably inserted into the two constraint grooves respectively. A support spring 36 is provided on the side of the support plate 17 located within the support groove. Three sliding grooves 14 are symmetrically formed on the outer periphery of the rotating support shaft 12. Three mounting strips 15 are symmetrically formed on the side of the contact sleeve 13 that is fitted onto the rotating support shaft 12. The three mounting strips 15 are movably inserted into the three sliding grooves 14 respectively. Several ball grooves are formed on the side of each mounting strip 15 that is inserted into the sliding groove 14. Sliding balls 16 are rotatably inserted into each of the ball grooves, and one side of each sliding ball 16 makes rolling contact with the inner wall of the sliding groove 14. The length of the contact sleeve 13 is less than... The length of the self-rotating support shaft 12 is such that light return springs 19 are sleeved on both sides of the self-rotating support shaft 12. The two sides of the light return springs 19 are in contact with the contact sleeve 13 and the support plate 17, respectively. Two anti-slip plates 21 are symmetrically arranged on both sides of the groove of the mounting base 9. Two anti-slip sleeves 20 are symmetrically arranged on both sides of the outer circumference of the contact sleeve 13. When the conveying pallet 4 is positioned, one side of the anti-slip sleeve 20 is in frictional contact with the anti-slip plate 21. When the second positioning block 10 contacts the contact sleeve 13, and the conveying pallet 4 moves horizontally along the direction of the conveyor belt 3, it can be guided by the mounting strip 15 and the sliding ball 16 to slide along the sliding groove 14, thereby reducing the wear of the second positioning block 10 and the contact sleeve 13 in this direction.

[0044] In this embodiment: when the conveyor pallet 4 moves between the first positioning bracket 1 and the second positioning bracket 2 via the conveyor belt 3, the conveyor belt 3 is stopped immediately by the electronic positioning device. At this time, the conveyor pallet 4 is in the basic positioning position. Then, the conical push block 6 extends out from the second positioning bracket 2 and is inserted into the conical groove of the first positioning block 7, simultaneously pushing the conveyor pallet 4 towards the contact sleeve 13. When the second positioning block 10 contacts the contact sleeve 13, the conveyor pallet 4 is slightly lifted, and the contact sleeve 13 rotates with the self-rotating support shaft 12, lowering the second positioning block 10 and the contact sleeve. Wear between 13, and during lifting, if there is misalignment of the conveyor pallet 4 in the direction of the conveyor belt 3, the contact sleeve 13 can slide along the self-rotating support shaft 12 under the conical abutment action of the conical push block 6, so as to avoid the second positioning block 10 getting stuck or excessively worn when it slides horizontally along the contact sleeve 13 to adjust its position. During this period, the support plate 17 is supported stably under the action of the support spring 36. The support spring 36 is a high-strength support spring. The number of telescopic push cylinder 5, conical push block 6 and first positioning block 7 can be set to multiple to ensure the stable pushing and support positioning of the conveyor pallet 4.

[0045] Example 2: Based on Example 1, a maintenance component is provided to lubricate the rotation of the self-rotating support shaft 12 and the horizontal sliding of the contact sleeve 13. The maintenance component is located in the mounting base 9 on the side near the support plate 17, and the maintenance component includes a piston guide rod 23 and a switching piston 29. A guide oil groove 22 is horizontally opened in the support plate 17 on the side of the support spring 36. The connecting shaft 37 is inserted into the support plate 17 on one side and placed in the guide oil groove 22. Two bearings are located on both sides of the guide oil groove 22. The piston guide rod 23 is horizontally arranged in the support groove on the side near the guide oil groove 22. The piston guide rod 23 is movably inserted into the guide oil groove 22. The support plate 17 can be stably guided and slid by the slider 18 and the piston guide rod 23, and the connection between the piston guide rod 23 and the support plate 17 is a self-sealing sliding.

[0046] An oil chamber 24 is horizontally formed at the upper end of the mounting base 9. A switching groove 25 is horizontally formed in the piston guide rod 23. An oil filling groove 26 is vertically formed at the lower end of the oil chamber 24, connecting to the switching groove 25. An accumulation groove 27 is horizontally formed in the mounting base 9 between the switching groove 25 and the oil chamber 24. The upper and lower ends of the accumulation groove 27 are respectively connected to the two sides of the switching groove 25, forming a replenishment groove 28 and an oil replenishment hole. A return spring 30 is horizontally formed on the side of the switching groove 25 near the oil filling groove 26. A switching piston 29 is connected to one side of the return spring 30. A tripod 31 is formed at the center of the guide oil groove 22. A pin 32 is horizontally formed on one side of the tripod 31. The pin 32 is inserted into the switching groove 25 and abuts against the switching piston 29. When the support plate 17 is inserted into the support groove to its maximum extent, the switching piston 29 blocks the side of the replenishment groove 28 that connects to the switching groove 25, while exposing the side of the oil replenishment hole that connects to the switching groove 25. When the support plate 17 is retracted... When the support groove is at its maximum extent, the anti-slip sleeve 20 abuts against the anti-slip sleeve 20, and the contact sleeve 13 cannot slide left or right or rotate. At this time, the ejector pin 32 pushes the switching piston 29 along with the support plate 17. The switching piston 29 blocks the replenishment groove 28, and the lubricating oil in the oil chamber 24 will not enter the replenishment groove 28 and the accumulation groove 27 through the switching groove 25. When the support plate 17 is rebounded by the support spring 36 and moves away from the switching piston 29, the accumulation groove 27 connects with the switching groove 25 and the oil chamber 24 through the replenishment groove 28. The switching piston 29 blocks the oil replenishment hole, and the lubricating oil in the oil chamber 24 enters the accumulation groove 27 from the switching groove 25 for temporary storage, waiting for the next time the switching piston 29 opens the oil replenishment hole. The lubricating oil in the support plate 17 enters the switching groove 25, and then flows into the guide oil groove 22 through the piston guide rod 23. The capacity of the support plate 17 is customizable, and a small amount is dripped into the switching groove 25 at a time, which is convenient for long-term intermittent use.

[0047] The self-rotating support shaft 12 has a horizontally opening branch groove 33 connecting two connecting shafts 37 at its center. The connecting shaft 37 is located on one side of the guide oil groove 22 and has a number of inlet holes 34 connected to the branch groove 33. The branch groove 33 is connected to the sliding groove 14 and has a number of lubrication holes 35. The lubricating oil flowing into the guide oil groove 22 enters the branch groove 33 through the inlet holes 34. Then, when the self-rotating support shaft 12 rotates, it drips from the lubrication holes 35 into the sliding groove 14 and contacts the sliding balls 16 to complete the self-lubrication maintenance.

[0048] After the mating groove 11 and the contact sleeve 13 make contact, the conical push block 6 continues to push the conveying tray 4, the support plate 17 compresses the support spring 36, so that the contact sleeve 13 continues to move a certain distance in connection with the rotating support shaft 12. During this period, the switching piston 29 moves, and the anti-slip sleeve 20 and the anti-slip plate 21 abut against each other, keeping the position and posture of the contact sleeve 13 and the rotating support shaft 12 stable. At this time, the conveying tray 4 is in the final stable positioning posture.

[0049] 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 small-scale automatic production line conveying and positioning mechanism, characterized in that, include: The first positioning bracket (1) and the second positioning bracket (2) are arranged vertically and symmetrically. The first positioning bracket (1) and the second positioning bracket (2) are provided with a conveyor belt (3) on the opposite side of the first positioning bracket (1) and the second positioning bracket (2). The upper end of the two conveyor belts (3) is placed with a conveyor tray (4). The push assembly is located on the side of the second positioning bracket (2) near the conveying tray (4). The push assembly includes a telescopic push cylinder (5) and a conical push block (6). One side of the conical push block (6) is in contact with the first positioning block (7). The support positioning assembly is horizontally mounted on the side of the first positioning bracket (1) near the conveying tray (4) by bolts. The support positioning assembly includes a mounting base (9), a rotating support shaft (12), and a contact sleeve (13). Support plates (17) are horizontally and movably inserted into both sides of the mounting base (9). The two sides of the rotating support shaft (12) are respectively movably inserted into the two support plates (17). The contact sleeve (13) is horizontally and slidably sleeved on the rotating support shaft (12). The maintenance component is located in the mounting base (9) on one side near the support plate (17), and includes a piston guide rod (23) and a switching piston (29); the telescopic push cylinder (5) is horizontally located on one side of the second positioning bracket (2), the telescopic push cylinder (5) extends through the second positioning bracket (2), the conical push block (6) is located on the side where the telescopic push cylinder (5) extends through the second positioning bracket (2), the conveying tray (4) is provided with a first positioning block (7) on the side near the conical push block (6), the first positioning block (7) has a conical groove on one side, and the conical push block (6) is inserted into the conical groove on one side; the first positioning bracket (1) has an assembly groove (8) on the side near the conveying tray (4), the mounting base (9) is horizontally placed in the assembly groove (8), and the mounting base (9) has an assembly groove (8) on the side near the conveying tray (4). The mounting base (9) has two symmetrical support slots on both sides near the groove. Two support plates (17) are horizontally inserted into the two support slots respectively. One side of each support plate (17) extends out of the mounting base (9). Two connecting shafts (37) are symmetrically provided on both sides of the self-rotating support shaft (12). The two connecting shafts (37) are rotatably inserted into the two support plates (17) through two bearings respectively. The conveying tray (4) has two second positioning blocks (10) symmetrically provided on the side near the mounting base (9) by bolts. The two second positioning blocks (10) have a mating groove (11) on the side near the contact sleeve (13). When the conical push block (6) is inserted into the conical groove of the first positioning block (7) and continues to move, the two second positioning blocks (10) are respectively engaged with the outer periphery of the contact sleeve (13) through the mating groove (11).

2. The small automatic production line conveying and positioning mechanism according to claim 1, characterized in that: Two constraint grooves are symmetrically opened on both sides of the support groove. The support plate (17) is provided with a slider (18) on the side near the constraint groove. The two sliders (18) are respectively movably inserted into the two constraint grooves, and the support plate (17) is provided with a support spring (36) on the side of the support groove.

3. The small automatic production line conveying and positioning mechanism according to claim 2, characterized in that: The outer periphery of the self-rotating support shaft (12) is symmetrically provided with three sliding grooves (14). The side of the contact sleeve (13) that is sleeved on the self-rotating support shaft (12) is symmetrically provided with three mounting strips (15). The three mounting strips (15) are respectively movably inserted into the three sliding grooves (14). The side of the mounting strip (15) inserted into the sliding groove (14) is provided with several ball grooves. Sliding balls (16) are rotatably inserted into the several ball grooves, and one side of the several sliding balls (16) respectively rolls in contact with the inner sidewall of the sliding groove (14).

4. The small automatic production line conveying and positioning mechanism according to claim 3, characterized in that: The length of the contact sleeve (13) is less than the length of the self-rotating support shaft (12). Lightweight return springs (19) are sleeved on both sides of the self-rotating support shaft (12). The two sides of the lightweight return springs (19) are in contact with the contact sleeve (13) and the support plate (17) respectively. Two anti-slip plates (21) are symmetrically arranged on both sides of the groove of the mounting base (9). Two anti-slip sleeves (20) are symmetrically arranged on both sides of the outer circumference of the contact sleeve (13). When the conveying tray (4) is positioned, one side of the anti-slip sleeve (20) is in frictional contact with the anti-slip plate (21).

5. The small automatic production line conveying and positioning mechanism according to claim 4, characterized in that: The support plate (17) is horizontally provided with a guide oil groove (22) on one side of the support spring (36). The connecting shaft (37) is inserted into the support plate (17) on one side and placed in the guide oil groove (22). Two bearings are located on both sides of the guide oil groove (22). The piston guide rod (23) is horizontally provided in the support groove on one side close to the guide oil groove (22). The piston guide rod (23) is movably inserted into the guide oil groove (22).

6. The small automatic production line conveying and positioning mechanism according to claim 5, characterized in that: The mounting base (9) has a horizontally formed oil cavity (24) at its upper end, and a horizontally formed switching groove (25) at its piston guide rod (23). The lower end of the oil cavity (24) is vertically connected to the switching groove (25) and has an oil filling groove (26). A horizontally formed accumulation groove (27) is located between the switching groove (25) and the oil cavity (24) within the mounting base (9). The upper and lower ends of the accumulation groove (27) are connected to both sides of the switching groove (25) and have a replenishment groove (28) and an oil replenishment hole, respectively. Water is present on the side of the switching groove (25) closest to the oil filling groove (26). A return spring (30) is provided on the flat side, and a switching piston (29) is connected to one side of the return spring (30). A tripod (31) is provided in the center of the guide oil groove (22), and a pin (32) is provided horizontally on one side of the tripod (31). The pin (32) is inserted into the switching groove (25) and abuts against the switching piston (29). When the support plate (17) is inserted into the support groove to the maximum extent, the switching piston (29) blocks the side of the replenishment groove (28) that connects to the switching groove (25), and exposes the side of the oil replenishment hole that connects to the switching groove (25).

7. The small automatic production line conveying and positioning mechanism according to claim 6, characterized in that: The self-rotating support shaft (12) has a horizontally oriented flow channel (33) in the center. The side of the self-rotating support shaft (12) located in the guide oil groove (22) is connected to the flow channel (33) and has several access holes (34). The flow channel (33) is connected to the sliding groove (14) and has several lubrication holes (35).

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