Automatic round pipe feeding equipment

Abstract

The invention relates to the technical field of metal pipe machining, in particular to automatic round pipe feeding equipment which comprises a material storage area, a first-stage cache area and a second-stage cache area, the material storage area comprises a plurality of first brackets, each first bracket comprises a first supporting rod, a first air cylinder frame and a first jacking air cylinder, and supports are arranged at the two ends of each first supporting rod; the first air cylinder frame is fixedly installed at the rear end of the first bracket, the first jacking air cylinder is fixedly installed on the first air cylinder frame and located between the adjacent brackets, and a first push rod is arranged at the output end of the jacking air cylinder. Full automation is achieved in the whole process, manual intervention is reduced, the production efficiency and the continuous feeding capacity are improved, the storage capacity and the buffering capacity are increased through the design of the multiple layers of brackets (the first bracket and the second bracket), and the continuous and uninterrupted feeding requirement is met.

Description

Technical Field

[0001] The invention relates to the technical field of metal pipe material processing, in particular to an automatic round pipe feeding device. Background Art

[0002] With the continuous improvement of industrial automation, the metal processing, machinery manufacturing and other industries have an increasing demand for efficient processing of long strip materials such as round tubes. However, the traditional manual or semi-automatic feeding methods have many shortcomings:

[0003] Manual handling:

[0004] Workers need to move the round tubes from the storage area to the processing location, a process that is labor-intensive and inefficient.

[0005] Due to manual operation, there is a higher risk of work-related injuries, posing a threat to workers' safety.

[0006] Simple conveying device:

[0007] Some companies use simple conveying devices such as conveyor belts or roller racks for initial transportation.

[0008] However, these devices lack intelligent control and cannot accurately adjust the position and posture of the round tube.

[0009] This results in the need for additional manual intervention in subsequent processing, increasing production costs and working hours.

[0010] Although the existing automatic feeding equipment has achieved automation to a certain extent, it still has limitations:

[0011] Complex operation:

[0012] Some automatic feeding equipment has complex structure and imperfect control system, which makes it difficult to operate23.

[0013] The maintenance cost is high and professional technicians are required to perform regular maintenance and servicing23.

[0014] Poor adaptability:

[0015] Many devices are only suitable for round tubes of specific specifications and are not compatible with round tubes of different diameters and lengths.

[0016] This limits the application scope of the equipment and makes it difficult to meet diversified production needs.

[0017] Insufficient precision:

[0018] Some equipment has deviations in the positioning and clamping of round tubes, which affects the quality and consistency of subsequent processing.

[0019] This lack of precision may result in processed products not meeting requirements, causing waste and losses.

[0020] Large space occupation:

[0021] In order to ensure sufficient cache capacity and operating space, traditional devices are often bulky.

[0022] This takes up more factory space, increases construction costs, and reduces the overall efficiency of the production line.

[0023] In summary, the traditional manual or semi-automatic feeding methods and the existing automatic feeding equipment have many shortcomings and cannot meet the requirements of modern production lines for high precision and high speed. Therefore, the development of a device that can realize automatic feeding of round tubes and has the advantages of high efficiency, precision and flexibility has become an inevitable trend in the development of the industry. Summary of the invention

[0024] 1. Technical issues to be solved

[0025] In view of the deficiencies in the prior art, the present invention provides an automatic round tube feeding device.

[0026] (II) Technical solution

[0027] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic feeding device for round tubes, comprising a material storage area, a primary buffer area and a secondary buffer area, the material storage area comprising a plurality of brackets 1, the bracket 1 comprising a support rod 1, a cylinder frame 1 and a lifting cylinder 1, brackets are provided at both ends of the support rod 1, the cylinder frame 1 is fixedly mounted on the rear end of the bracket 1, the lifting cylinder 1 is fixedly mounted on the cylinder frame 1, and the lifting cylinder 1 is located between adjacent brackets, a push rod 1 is provided at the output end of the lifting cylinder, the secondary buffer area comprises a plurality of brackets 2, the bracket 2 comprises a support plate, a lifting assembly, a lifting adjustment device and a clamping and feeding device, the support plate is fixedly mounted on the bracket 2, the lifting assembly It is fixedly installed on one side of the pallet, and a groove is provided on the top of the pallet. The lifting and adjusting device is slidably installed on the other side of the pallet, and the lifting and adjusting device is adapted to the groove. A driving device is provided on the secondary cache area, and the driving device is used to drive the lifting and lowering of the lifting and adjusting device. The clamping and feeding device is installed at the rear end of the secondary cache area. The primary cache area includes a plurality of support rods II, and a cylinder frame II is provided at the front end of the support rod II. One end of the support rod II is connected to the bracket of the support rod I, and the other end of the support rod II is connected to the cylinder frame II. A plurality of lifting cylinders II are installed on the cylinder frame II, and the lifting cylinders II are located between adjacent support rods II, and a push rod II is provided at the output end of the lifting cylinder II.

[0028] Preferably, the pallet includes pallet one and pallet two, and pallet one and pallet two are spaced apart in the secondary cache area, the lifting and adjusting device is slidably installed on pallet one and pallet two, and the jacking assembly is fixedly installed on pallet two.

[0029] Further preferably, the jacking assembly includes a jacking cylinder three and a lifting rod, the jacking cylinder three is fixedly mounted on the support plate two, the front end of the lifting rod is hinged on the support plate two, the output end of the jacking cylinder three is provided with a push rod three, and the rear end of the lifting rod is adapted to the push rod three.

[0030] Again preferably, the lifting and adjusting device includes a lifting frame, a slide rail and a lifting rack, the slide rail is fixedly mounted on the first and second pallets, the two ends of the lifting frame are slidably connected to the slide rail through a screw rod, a V-shaped groove is provided at the top of the lifting frame, an opening is provided on the lifting frame, and the lifting rack is fixedly mounted on the side of the opening.

[0031] Preferably, the driving device includes a driving motor, a driving rod and a driving gear. The driving motor is fixedly mounted on pallet one at the front end of the secondary cache area. The driving rod is mounted on the output end of the driving motor. The driving rod passes through pallet one and pallet two of the secondary cache area, and the driving rod is rotatably connected to pallet one and pallet two via bearings. The driving gear is mounted on the driving rod, the driving gear is meshed with the lifting rack, and the opening on the lifting frame is adapted to the driving gear.

[0032] Further preferably, the clamping and feeding device includes a guide rod, a two-way clamping cylinder, a rack belt and a transmission gear. An articulated frame is provided on pallet one and pallet two at the rear end of the secondary buffer area. The transmission gear is rotatably installed on the articulated frame. Both ends of the rack belt are sleeved on the transmission gear. The guide rod is symmetrically arranged on pallet one and pallet two at the rear end of the secondary buffer area, and the guide rod is located above the rack belt. Clamping rods are provided at the output ends of both ends of the two-way clamping cylinder, and a base is provided at the bottom of the two-way clamping cylinder. Both ends of the base are sleeved on the guide rod, and one end of the base is fixedly connected to the rack belt.

[0033] Preferably again, middle rollers are rotatably mounted on both sides of the V-shaped groove at the top of the lifting frame.

[0034] Preferably, an alignment plate is fixedly mounted at the rear end of the material storage area.

[0035] Further preferably, the support rod 1 and the support rod 2 are both inclined, and the rear ends of the support plate 1 and the support plate 2 are provided with inclined grooves.

[0036] Again preferably, a loading baffle assembly is fixedly mounted on the second support plate, and the loading baffle assembly is located at the rear end of the lifting cylinder three, the loading baffle assembly includes a lifting cylinder four, a track frame and a baffle, the track frame and the lifting cylinder four are both fixedly mounted on the second support plate by bolts, and the lifting cylinder four is located below the track frame, the baffle is slidably mounted on the track frame, and the output end of the lifting cylinder four is connected to the baffle.

[0037] (III) Beneficial effects

[0038] Compared with the prior art, the present invention provides an automatic round tube feeding device, which has the following beneficial effects:

[0039] Efficient automated operation

[0040] Fully automated process: From the material storage area to the primary buffer area, then to the secondary buffer area, and finally to the clamping and feeding station, the entire process is fully automated, reducing manual intervention and improving production efficiency.

[0041] Continuous feeding capability: The multi-layer bracket design (Bracket 1 and Bracket 2) increases the storage capacity and buffering capacity, ensuring continuous and uninterrupted feeding needs.

[0042] Precise positioning and control

[0043] Lifting cylinder system: Through the coordinated work of multiple lifting cylinders (lifting cylinder 1, lifting cylinder 2 and lifting cylinder 3), the round tube is gradually transferred from the storage area to the secondary buffer area, and finally sent to the clamping and feeding station, ensuring that each step of the operation is accurate and correct.

[0044] Lifting adjustment device: The sliding rail and screw rod are used to connect the lifting frame, so that the lifting frame can slide smoothly on the pallet, and cooperate with the driving device to achieve precise adjustment of the height of the round tube to ensure the accurate feeding position.

[0045] Stable and reliable clamping and conveying

[0046] Clamping and feeding device: The two-way clamping cylinder combined with the transmission gear and rack belt transmission mechanism realizes the stable clamping and accurate conveying of round tubes. At the same time, the design of the guide rod ensures the linearity of the moving path and avoids deviation or jamming.

[0047] V-shaped groove and middle roller: The middle rollers are rotatably installed on both sides of the V-shaped groove on the top of the lifting frame, which reduces the friction of the round pipe during movement and ensures the smoothness and stability of the conveying process.

[0048] Optimized space utilization and compact structure

[0049] Inclined support rods: The inclination angles of support rods 1 and 2 help the round tube to slide naturally, reducing the need for additional power, improving work efficiency and saving space.

[0050] Compact layout: The overall equipment design is compact, occupies little space, adapts to more site conditions, improves the flexibility of equipment layout, and reduces plant area requirements.

[0051] Improve product quality and consistency

[0052] Function of the alignment plate: The alignment plate at the rear end of the storage area ensures the neat arrangement of the round tubes, provides a good basic condition for subsequent automated processing, and ensures the consistency and quality of the products.

[0053] Reduce human errors: The high degree of automation reduces the uncertainty and errors caused by manual operation and improves processing accuracy and yield rate.

[0054] Reduce labor intensity and improve safety

[0055] Reduce labor burden: Automated loading equipment replaces traditional manual handling methods, greatly reducing the labor intensity of workers and improving the safety of the working environment.

[0056] Reduce safety hazards: Since the chance of direct human contact with heavy materials is reduced, the probability of work-related accidents is reduced and the level of production safety is improved.

[0057] Easy to maintain and manage

[0058] Modular design: Each component, such as the lifting component, lifting adjustment device and clamping feeding device, is an independent module, which is easy to disassemble and replace, simplifying daily maintenance work.

[0059] Integrated control system: All actions are coordinated by the central control system, fault diagnosis is convenient and fast, maintenance cost is low, and it is suitable for large-scale industrial applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0061] Figure 2 It is a structural schematic diagram of the lifting and adjusting device of the present invention;

[0062] Figure 3 It is a schematic structural diagram of the clamping and feeding device of the present invention;

[0063] In the figure: 1. material storage area; 2. primary buffer area; 3. secondary buffer area; 4. clamping and feeding device; 5. lifting and lowering adjustment device; 6. bracket 1; 7. support rod 1; 8. support rod 2; 9. support plate 1; 10. bracket 2; 11. lifting cylinder 1; 12. push rod 1; 13. lifting cylinder 2; 14. push rod 2; 15. cylinder frame 1; 16. cylinder frame 2; 17. support plate 2; 18. driving motor; 19. driving rod ; 20. Groove; 21. Lifting cylinder three; 22. Lifting rod; 23. Alignment plate; 24. Lifting frame; 25. V-groove; 26. Opening; 27. Lifting rack; 28. Driving gear; 29. ​​Middle roller; 30. Bidirectional clamping cylinder; 31. Clamping rod; 32. Base; 33. Guide rod; 34. Rack belt; 35. Articulated frame; 36. Transmission gear; 37. Track frame; 38. Lifting cylinder four; 39. Baffle. DETAILED DESCRIPTION

[0064] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0065] See also Figure 1-3The present invention is an automatic feeding device for round tubes, comprising a storage area 1, a primary buffer area 2 and a secondary buffer area 3, wherein the storage area 1 comprises a plurality of brackets 6, wherein the bracket 6 comprises a support rod 7, a cylinder frame 15 and a lifting cylinder 11, wherein brackets are arranged at both ends of the support rod 7, wherein the cylinder frame 15 is fixedly mounted on the rear end of the bracket 6, wherein the lifting cylinder 11 is fixedly mounted on the cylinder frame 15, and wherein the lifting cylinder 11 is located between adjacent brackets, wherein a push rod 12 is arranged at the output end of the lifting cylinder, wherein the secondary buffer area 3 comprises a plurality of brackets 10, wherein the bracket 10 comprises a support plate, a lifting assembly, a lifting adjustment device 5 and a clamping and feeding device 4, wherein the support plate is fixedly mounted on the bracket 10, and wherein the lifting assembly is fixedly mounted on the support plate One side of the support plate is provided with a groove 20 on the top, the lifting and adjusting device 5 is slidably installed on the other side of the support plate, and the lifting and adjusting device 5 is adapted to the groove 20, and a driving device is provided on the secondary cache area 3, and the driving device is used to drive the lifting and lowering of the lifting and adjusting device 5, and the clamping feeding device 4 is installed at the rear end of the secondary cache area 3, and the primary cache area 2 includes a plurality of support rods 8, and a cylinder frame 16 is provided at the front end of the bracket 10, one end of the support rod 8 is connected to the bracket of the bracket 1, and the other end of the support rod 8 is connected to the cylinder frame 16, and a plurality of lifting cylinders 13 are installed on the cylinder frame 16, and the lifting cylinders 13 are located between adjacent support rods 8, and a push rod 14 is provided at the output end of the lifting cylinder 13.

[0066] The basic structure and working principle of the round tube automatic feeding equipment

[0067] Design of automatic round tube feeding equipment:

[0068] Storage area 1: used to store the round tubes to be processed, including several brackets 6. Each bracket 6 is composed of a support rod 7, a cylinder frame 15 and a lifting cylinder 11. Brackets are provided at both ends of the support rod 7, the cylinder frame 15 is fixed to the rear end of the bracket 6, and the lifting cylinder 11 is installed on the cylinder frame 15 and is located between adjacent brackets, and a push rod 12 is provided at its output end.

[0069] The primary buffer area 2 is a transition area between the material storage area 1 and the secondary buffer area 3, and includes a plurality of supporting rods 2 8. One end of the supporting rod 2 8 is connected to the bracket 1 6 of the material storage area 1, and the other end is connected to the cylinder rack 2 16, on which the lifting cylinder 2 13 is installed, which is used to lift the round pipe from the primary buffer area 2 to the secondary buffer area 3.

[0070] Secondary buffer area 3: the final position for feeding, including several brackets 10. Each bracket 10 is composed of a pallet, a lifting assembly, a lifting adjustment device 5 and a clamping and feeding device 4. The pallet is fixed on the bracket 10, and a groove 20 is provided on the top; the lifting assembly is used to lift the round tube; the lifting adjustment device 5 controls the height adjustment of the round tube; the clamping and feeding device 4 is responsible for feeding the round tube into the laser cutting position.

[0071] 2. Detailed Workflow

[0072] Stocking stage:

[0073] The workers place the round tubes neatly on the bracket 6 of the storage area 1, and the alignment plate 23 at the rear end of the storage area 1 ensures that the round tubes are neatly arranged.

[0074] The supporting rod 1 7 and the supporting rod 2 8 are both inclined to facilitate the natural sliding transmission of the round tube.

[0075] First-level cache transfer stage:

[0076] The lifting cylinder 11 lifts the bottommost round tube through the push rod 12, so that it is separated from other round tubes and moved to the supporting rod 2 8 of the first-level buffer area 2.

[0077] Due to the inclined design of the support rod 1 7 and the support rod 2 8 , the round tube can slide smoothly into the first-level buffer area 2 .

[0078] L2 cache transfer stage:

[0079] The lifting cylinder 13 lifts the round pipe from the primary buffer area 2 to the support plate of the secondary buffer area 3 through the push rod 14.

[0080] The pallet 1 9 and the pallet 2 17 of the secondary cache area 3 are arranged at intervals to provide sufficient space for subsequent operations.

[0081] Height adjustment and positioning stage:

[0082] The lifting and adjusting device 5 (including the lifting frame 24, the slide rail 40 and the lifting rack 27) is slidably installed on the pallet 1 9 and the pallet 2 17, and the driving device (including the driving motor 18, the driving rod 19 and the driving gear 28) controls the lifting and lowering of the lifting frame 24 to ensure that the round tube is at a suitable height.

[0083] The lifting assembly (including the lifting cylinder 3 21 and the lifting rod 22) further lifts the round tube to prepare for entering the clamping and feeding station.

[0084] Clamping and feeding stage:

[0085] The clamping and feeding device 4 (including a guide rod 33, a bidirectional clamping cylinder 30, a rack belt 34 and a transmission gear 36) is installed at the rear end of the secondary buffer area 3. The round tube is clamped by the clamping rod 31 of the bidirectional clamping cylinder 30 and moved along the guide rod 33 to the laser cutting position.

[0086] Middle rollers 29 are rotatably mounted on both sides of the V-shaped groove 25 at the top of the lifting frame 24, which reduces the friction of the round tube during movement and ensures smooth transportation.

[0087] Function of the feeding baffle 39 assembly:

[0088] A loading baffle 39 assembly is fixedly mounted on the pallet 2 17 of the secondary buffer area 3, including a lifting cylinder 4 38, a track frame 37 and a baffle 39. The assembly is located at the rear end of the lifting cylinder 3 21, and the lifting and lowering of the baffle 39 is controlled by the lifting cylinder 4 38, which is used to prevent the round tube from being loaded into the secondary buffer area 3 according to the loading needs, thereby ensuring the stability and safety of the round tube loading process.

[0089] Specific working principles of each preferred technical solution

[0090] Multi-layer bracket design: by providing a plurality of brackets 1 6 and brackets 2 10, the material storage capacity and buffering capability are increased, thereby ensuring the demand for continuous material supply.

[0091] Lifting cylinder system: The lifting cylinders at different positions (lifting cylinder 1 11, lifting cylinder 2 13, lifting cylinder 3 21 and lifting cylinder 4 38) work together to gradually transfer the round tube from the storage area 1 to the secondary buffer area 3, and finally send it to the clamping and feeding station to ensure that each step of the operation is accurate.

[0092] Lifting adjustment device 5: The lifting frame 24 can slide smoothly on the support plate by connecting the slide rail 40 and the screw rod, and cooperate with the driving device to achieve precise adjustment of the height of the round tube to ensure that the feeding position is accurate.

[0093] Clamping and feeding device 4: The bidirectional clamping cylinder 30 is combined with the gear rack transmission mechanism to achieve stable clamping and accurate conveying of the round tube. At the same time, the design of the guide rod 33 ensures the linearity of the moving path and avoids deviation or jamming.

[0094] V-shaped groove 25 and middle roller 29: Middle rollers 29 are rotatably installed on both sides of the V-shaped groove 25 on the top of the lifting frame 24, which reduces the friction of the round tube during movement and ensures the smoothness and stability of the conveying process.

[0095] Function of the alignment plate 23: The alignment plate 23 at the rear end of the storage area 1 ensures the neat arrangement of the round tubes, provides a good basic condition for subsequent automated processing, and ensures the consistency and quality of the products.

[0096] Inclined support rods: The inclination angles of the support rod 1 7 and the support rod 2 8 help the round tube to slide naturally, reduce the need for additional power, improve work efficiency and save space.

[0097] Feeding baffle 39 assembly: The up and down movement of the baffle 39 is controlled by the lifting cylinder 4 38, which is used to prevent the round tube from being fed into the secondary buffer area 3 according to the feeding needs, thereby ensuring the stability and safety of the round tube feeding process.

[0098] To sum up, the automatic round tube feeding equipment provided by the present invention realizes a fully automated process from material storage, caching to final feeding through a carefully designed mechanical structure and control system, which significantly improves production efficiency and product quality, while also reducing manual labor intensity. It is suitable for various industrial occasions that require efficient processing of round tube materials.

[0099] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic round tube feeding device, characterized in that: The invention comprises a material storage area (1), a primary buffer area (2) and a secondary buffer area (3), wherein the material storage area (1) comprises a plurality of brackets (6), wherein the bracket (6) comprises a support rod (7), a cylinder frame (15) and a lifting cylinder (11), wherein brackets are arranged at both ends of the support rod (7), wherein the cylinder frame (15) is fixedly mounted on the rear end of the bracket (6), wherein the lifting cylinder (11) is fixedly mounted on the cylinder frame (15), and wherein the lifting cylinder (11) is located between adjacent brackets, wherein a push rod (12) is arranged at the output end of the lifting cylinder, wherein the secondary buffer area (3) comprises a plurality of brackets (10), wherein the bracket (10) comprises a support plate, a lifting assembly, a lifting adjustment device (5) and a clamping and feeding device (4), wherein the support plate is fixedly mounted on the bracket (10), wherein the lifting assembly is fixedly mounted on one side of the support plate, wherein the support plate A groove (20) is provided on the top of the support plate, the lifting and adjusting device (5) is slidably installed on the other side of the support plate, and the lifting and adjusting device (5) is adapted to the groove (20), a driving device is provided on the secondary buffer area (3), and the driving device is used to drive the lifting and lowering of the lifting and adjusting device (5), the clamping feeding device (4) is installed at the rear end of the secondary buffer area (3), the primary buffer area (2) includes a plurality of supporting rods (8), a cylinder frame (16) is provided at the front end of the bracket (10), one end of the supporting rod (8) is connected to the bracket of the bracket (6), and the other end of the supporting rod (8) is connected to the cylinder frame (16), a plurality of lifting cylinders (13) are installed on the cylinder frame (16), and the lifting cylinders (13) are located between adjacent supporting rods (8), and the output end of the lifting cylinders (13) is provided with a push rod (14).

2. The automatic round tube feeding equipment according to claim 1, characterized in that: The pallet comprises a pallet one (9) and a pallet two (17), and the pallet one (9) and the pallet two (17) are arranged at intervals in the secondary buffer area (3), the lifting and adjusting device (5) is slidably installed on the pallet one (9) and the pallet two (17), and the lifting assembly is fixedly installed on the pallet two (17).

3. The automatic round tube feeding equipment according to claim 2 is characterized in that: The lifting assembly comprises a lifting cylinder three (21) and a lifting rod (22), wherein the lifting cylinder three (21) is fixedly mounted on the support plate two (17), the front end of the lifting rod (22) is hinged on the support plate two (17), the output end of the lifting cylinder three (21) is provided with a push rod three, and the rear end of the lifting rod (22) is adapted to the push rod three.

4. The automatic round tube feeding equipment according to claim 3 is characterized in that: The lifting adjustment device (5) comprises a lifting frame (24), a slide rail (40) and a lifting rack (27); the slide rail (40) is fixedly mounted on a first support plate (9) and a second support plate (17); two ends of the lifting frame (24) are slidably connected to the slide rail (40) via a screw rod; a V-shaped groove (25) is provided at the top of the lifting frame (24); an opening (26) is provided on the lifting frame (24); and the lifting rack (27) is fixedly mounted on the side of the opening (26).

5. The automatic round tube feeding equipment according to claim 4 is characterized in that: The driving device comprises a driving motor (18), a driving rod (19) and a driving gear (28); the driving motor (18) is fixedly mounted on a pallet (9) at the front end of the secondary buffer zone (3); the driving rod (19) is mounted on the output end of the driving motor (18); the driving rod (19) penetrates the pallet (9) and the pallet (17) of the secondary buffer zone (3); the driving rod (19) is rotatably connected to the pallet (9) and the pallet (17) via a bearing; the driving gear (28) is sleeved on the driving rod (19); the driving gear (28) is meshed with a lifting rack (27); and an opening (26) on the lifting frame (24) is adapted to the driving gear (28).

6. The automatic round tube feeding equipment according to claim 5, characterized in that: The clamping and feeding device (4) comprises a guide rod (33), a bidirectional clamping cylinder (30), a rack belt (34) and a transmission gear (36); a hinge frame (35) is provided on the pallet 1 (9) and the pallet 2 (17) at the rear end of the secondary buffer zone (3); the transmission gear (36) is rotatably mounted on the hinge frame (35); the two ends of the rack belt (34) are sleeved on the transmission gear (36); the guide rod (33) is symmetrically arranged on the pallet 1 (9) and the pallet 2 (17) at the rear end of the secondary buffer zone (3); and the guide rod (33) is located above the rack belt (34); the output ends of the two ends of the bidirectional clamping cylinder (30) are provided with clamping rods (31); the bottom of the bidirectional clamping cylinder (30) is provided with a base (32); the two ends of the base (32) are sleeved on the guide rod (33); and one end of the base (32) is fixed to the rack belt (34).

Images