Assembly system of coiled pipe

Abstract

A motor is fixedly arranged on one side of an assembling machine, a reciprocating lead screw is fixedly arranged at the output end of the motor, a rectangular block is connected to the outer portion of the reciprocating lead screw in a threaded mode, and a gear is rotationally arranged at the position, close to the lower end, in the assembling machine; racks are slidably arranged on the two sides of the interior of the assembling machine correspondingly, and fixing blocks are fixedly arranged on the sides, away from the gears, of the rear ends of the two racks correspondingly. Guide rods are arranged in the two fixing blocks in a sliding mode, sliding blocks are fixedly arranged at the upper ends of the two guide rods, sliding columns are arranged at the rear ends of the two sliding blocks in a sliding mode, and rectangular grooves are formed in the positions, close to the rear ends, of the two sides in the assembling machine; inclined blocks are fixedly arranged at the positions, close to the lower ends, of one sides of the interiors of the two rectangular grooves. The assembly rework rate and energy consumption of the system are low.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of coiled tubing assembly, and relates to a coiled tubing assembly system. BACKGROUND

[0002] Coiled elbow belongs to special and difficult pipe fittings, and can be processed in two ways of cold bending and hot bending. Small and medium pipe diameters are usually formed by cold bending, and large pipe diameters need to be processed by hot bending. The product materials include stainless steel, carbon steel, alloy steel and the like, and are widely used in fields of building materials, shipbuilding, chemical industry, metallurgy, boiler manufacturing, petroleum, food, medicine, air conditioning pipe fitting and subway engineering. When the coiled tubing is processed, a coiled tubing assembly system is often needed.

[0003] The existing coiled tubing assembly system is mostly driven by multiple power sources, and the components are linked through multi-stage transmission of belts and chains. The overall transmission link is long, power loss is large, and there is a lack of guiding and restraining structure. During the pushing and docking of the coiled tubing, deviation is prone to occur, which leads to misalignment of the plug and the socket, and high rework rate of assembly. SUMMARY

[0004] The present application aims to overcome the shortcomings of the prior art, and provides a coiled tubing assembly system with low rework rate and energy consumption.

[0005] To achieve the above-mentioned purpose, the present application discloses a coiled tubing assembly system, which comprises an assembly machine, a motor fixedly arranged on one side of the assembly machine, a reciprocating screw rod fixedly arranged at the output end of the motor, a rectangular block threadedly connected to the outer part of the reciprocating screw rod, a gear rotatably arranged at the lower end inside the assembly machine, and a rack slidingly arranged on both sides of the assembly machine. A guide rod is slidingly arranged in each of the two fixed blocks, a sliding block is fixedly arranged at the upper end of each of the two guide rods, a sliding column is slidingly arranged at the rear end of each of the two sliding blocks, and a rectangular groove is formed at the position of the rear end of each of the two sides inside the assembly machine. The upper end of one of the two sliding blocks is fixedly arranged with a pushing block on the side away from the motor, a linkage plate is slidingly arranged at the end of the assembly machine close to the pushing block, a fixed plate is arranged on the side of the upper end of the assembly machine away from the motor, a third screw rod is rotatably arranged at the upper end of the fixed plate, a connecting block is threadedly connected to the outer part of the third screw rod, a second screw rod is rotatably arranged at the side of the connecting block close to the motor, and a pressing block is threadedly connected to the outer part of the second screw rod.

[0006] Furthermore, the two racks and the gear are meshed and connected, the two racks are parallel, the rear end of the rectangular block is fixedly disposed at the front end of one of the two racks near the motor, and the outer side of the rectangular block is slidably disposed at the front end inside the assembly machine.

[0007] Furthermore, the two sliding columns are respectively slidably disposed inside the two rectangular slots, the two inclined blocks are inclined on the side away from the motor, and springs are fixedly disposed at the front ends of the two sliding columns, and the front ends of the two springs are respectively fixedly disposed at the rear ends of the two sliders.

[0008] Furthermore, one of the two sliders is internally threaded to a first screw, and a push block is rotatably mounted on the side of the first screw near the motor. A material rack is fixedly mounted on the upper end of the assembly machine, and one side of the material rack is located on the side of the push block away from the motor. The push block and the push block are both slidably mounted inside the assembly machine.

[0009] Furthermore, a guide block is fixedly provided on the side of the push block away from the motor, and the guide block is externally slidably disposed inside one of the two sliders on the side closer to the motor.

[0010] Furthermore, the pressure block is externally slidably disposed inside the connecting block, two connecting rods are fixedly disposed at the lower end of the fixing plate, and one side of the upper end of the linkage plate is fixedly disposed at the lower end of one of the two connecting rods.

[0011] Furthermore, the rear end of the linkage plate is provided with a groove, and the front end of the push block is fixedly provided with a protrusion, which is slidably disposed inside the groove.

[0012] Furthermore, both the groove and the protrusion have a T-shaped cross-section.

[0013] Furthermore, a connecting frame is slidably provided on the outside of the connecting block, and a blocking block is fixedly provided at the lower end of the connecting frame. A V-shaped groove is provided on the side of the blocking block near the motor, and the lower end of the pressure block is inclined on the side near the third screw.

[0014] Furthermore, a V-shaped groove is provided at the upper end of the push block.

[0015] The present invention has the following beneficial effects: In specific operation, the serpentine tube assembly system of this invention uses a motor to drive a reciprocating lead screw, causing two racks to slide horizontally relative to or opposite to each other, and driving the slider to move synchronously. This causes the push block to rise and push the serpentine tube to slide. At this time, the push block descends and, through the protrusion and groove, pulls the linkage plate, causing the blocking block to block the front end of the serpentine tube. Subsequently, the pressure block will press the tube body tightly. Then, the push block will push horizontally, pushing the serpentine tube to another pre-positioned serpentine tube. Under the action of the thrust, a self-locking snap-fit ​​is achieved, completing the assembly. By pressing the pressure block, misalignment of the serpentine tubes can be avoided, effectively improving the assembly quality, reducing the rework rate, and at the same time, reducing energy consumption and labor costs, effectively improving production efficiency.

[0016] Furthermore, after assembly, the rack moves in the reverse direction, the push block moves upward, and its V-groove lifts the finished serpentine tube away from the work station. At the same time, the linkage plate moves upward, driving the blocking block and pressure block to rise, releasing the constraint. The push block continues to move horizontally, pushing the finished product to the receiving area to achieve automatic unloading. Finally, all components reset and enter the next cycle. The push block stroke and overall clamping height can be adjusted by manually adjusting the first screw, the second screw and the third screw to adapt to serpentine tube products of different lengths, diameters and pitches, thereby meeting the needs of multi-specification batch production. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a frontal axonometric view of the entire invention; Figure 2 This is a partial axial cross-section schematic diagram of the entire invention; Figure 3 This is a cross-sectional axial view of the present invention near the gear; Figure 4 This is a partial axial section view of the present invention near the rectangular groove; Figure 5 This is a schematic diagram of the axial side of the present invention near the reciprocating lead screw; Figure 6 This is a bottom-view axial view of the invention near the groove. Figure 7 This is a partial axial section schematic diagram of the present invention near the spring; Figure 8 This is a top-down exploded axial view of the present invention near the linkage plate.

[0019] The components are as follows: 1. Assembly machine; 2. Push block; 3. First screw; 4. Motor; 5. Material rack; 6. Second screw; 7. Press block; 8. Connecting frame; 9. Third screw; 10. Blocking block; 11. Fixing plate; 12. Connecting rod; 13. Connecting block; 14. Linkage plate; 15. Pushing block; 16. Rectangular groove; 17. Inclined block; 18. Rack; 19. Gear; 20. Reciprocating lead screw; 21. Rectangular block; 22. Guide rod; 23. Slider; 24. Guide block; 25. Sliding column; 26. Spring; 27. Groove; 28. Protrusion; 29. ​​Fixing block. Detailed Implementation

[0020] 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, not all, of the embodiments of the present invention. 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.

[0021] In the description of this invention, it should be understood that the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0022] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0023] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " in this invention generally indicates that the preceding and following objects have an "or" relationship.

[0024] It should be understood that although terms such as first, second, third, etc., may be used in the embodiments of the present invention to describe the preset range, these preset ranges should not be limited to these terms. These terms are only used to distinguish the preset ranges from one another. For example, without departing from the scope of the embodiments of the present invention, the first preset range may also be referred to as the second preset range, and similarly, the second preset range may also be referred to as the first preset range.

[0025] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when detection (of the stated condition or event)," or "in response to detection (of the stated condition or event)."

[0026] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0027] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0028] Example: like Figures 1-8 As shown, the assembly system for the serpentine tube provided in this embodiment of the invention includes an assembly machine 1. A motor 4 is fixedly installed on one side of the assembly machine 1. A reciprocating lead screw 20 is fixedly installed at the output end of the motor 4. A rectangular block 21 is threadedly connected to the external side of the reciprocating lead screw 20. A gear 19 is rotatably installed at the lower end of the assembly machine 1. Racks 18 are slidably installed on both sides of the assembly machine 1. Fixing blocks 29 are fixedly installed on the rear ends of the two racks 18 away from the gears 19.

[0029] Two racks 18 and gears 19 are meshed and connected. The two racks 18 are parallel. The rear end of the rectangular block 21 is fixedly set at the front end of one of the two racks 18 near the motor 4. The outer side of the rectangular block 21 is slidably set at the front end inside the assembly machine 1.

[0030] Guide rods 22 are slidably arranged inside both fixed blocks 29. Slider 23 is fixedly arranged at the upper end of both guide rods 22. Sliding column 25 is slidably arranged at the rear end of both sliders 23. Rectangular grooves 16 are opened at the rear end of both sides inside the assembly machine 1. Inclined blocks 17 are fixedly arranged at the lower end of one side of both rectangular grooves 16.

[0031] Two sliding columns 25 are slidably disposed inside two rectangular slots 16. The two inclined blocks 17 are inclined on the side away from the motor 4. A spring 26 is fixedly disposed at the front end of each of the two sliding columns 25. The front ends of the two springs 26 are fixedly disposed at the rear ends of the two sliders 23.

[0032] A pusher block 15 is fixedly installed on the side of one of the two sliders 23 away from the motor 4. The other slider 23 is internally threaded with a first screw 3. A pusher block 2 is rotatably installed on the side of the first screw 3 near the motor 4. A material rack 5 is fixedly installed on the upper end of the assembly machine 1. One side of the material rack 5 is set on the pusher block 2 away from the motor 4. The pusher block 15 and the pusher block 2 are both slidably installed inside the assembly machine 1.

[0033] Inside the assembly machine 1, a linkage plate 14 is slidably arranged at one end near the push block 15. A fixing plate 11 is arranged on the upper end of the assembly machine 1 away from the motor 4. A third screw 9 is rotatably arranged in the middle of the upper end of the fixing plate 11. A connecting block 13 is threadedly connected to the outside of the third screw 9. A second screw 6 is rotatably arranged inside the connecting block 13 on the side near the motor 4. A pressure block 7 is threadedly connected to the outside of the second screw 6.

[0034] A connecting frame 8 is slidably provided on the outside of the connecting block 13, and a blocking block 10 is fixedly provided at the lower end of the connecting frame 8.

[0035] A guide block 24 is fixedly installed on the side of the push block 2 away from the motor 4. The guide block 24 is externally slidably installed inside one of the two sliders 23 on the side closer to the motor 4. The pressure block 7 is externally slidably installed inside the connecting block 13. Two connecting rods 12 are fixedly installed at the lower end of the fixed plate 11. One side of the upper end of the linkage plate 14 is fixedly installed at the lower end of one of the two connecting rods 12.

[0036] The rear end of the linkage plate 14 is provided with a groove 27, and the front end of the push block 15 is fixedly provided with a protrusion 28. The protrusion 28 is slidably disposed inside the groove 27. The cross-section of both the groove 27 and the protrusion 28 is T-shaped.

[0037] The upper end of the push block 15 is provided with a V-shaped groove, the side of the blocking block 10 near the motor 4 is provided with a V-shaped groove, and the lower end of the pressure block 7 near the third screw 9 is inclined.

[0038] Specifically, in the above specific embodiment, before assembling the serpentine tubes, the serpentine tubes to be assembled are first placed in the material rack 5 in a stacked manner, so that the serpentine tubes fall naturally under their own gravity and finally land on the processing channel at the top of the assembly machine 1, in preparation for subsequent assembly.

[0039] Next, connect the device to an external power source. Then, start the motor 4 through the control panel at the front of the assembly machine 1. The motor 4 will rotate, causing the reciprocating screw 20 at its output end to rotate inside the assembly machine 1. The rotation of the reciprocating screw 20 will drive the rectangular block 21, which is threadedly connected to it, to slide horizontally back and forth along the inner wall of the assembly machine 1.

[0040] The sliding of rectangular block 21 will cause the rack 18 connected to it to move synchronously. Since the two racks 18 are parallel and both ends of the two racks 18 are meshed with the outer surface of gear 19, the sliding of one rack 18 will drive gear 19 to rotate. The rotation of gear 19 will drive the other rack 18 to move inside the assembly machine 1, thereby causing the two racks 18 to slide horizontally relative to or opposite to each other inside the assembly machine 1.

[0041] The relative sliding of the two racks 18 will synchronously drive the fixed block 29 at its rear end to move relative to each other inside the assembly machine 1. The fixed block 29 will drive the guide rod 22 inside it to move synchronously, and the guide rod 22 will drive the slider 23 at its upper end to move synchronously.

[0042] Before the equipment is put into operation, the sliding column 25 on the side closer to the motor 4 will be located at the lowest end of the rectangular groove 16 on the side closer to the motor 4, and it will be located at the protruding part on the side of the inclined block 17 inside the rectangular groove 16, while the sliding column 25 on the side away from the motor 4 will be located at the highest end of the rectangular groove 16 on the side away from the motor 4.

[0043] When slider 23 slides relative to the other side, it will synchronously drive the sliding column 25 at its rear end to slide along the inside of rectangular groove 16. When the side of sliding column 25 near motor 4 contacts the protruding part of inclined block 17 inside rectangular groove 16, the sliding of slider 23 will push the outside of sliding column 25 to slide along the protruding part of inclined block 17, thereby causing sliding column 25 to slide upward along the inside of rectangular groove 16, so that slider 23 connected to it slides upward along the inside of assembly machine 1. At this time, the outside of guide rod 22 at the lower end of slider 23 gradually slides upward inside fixed block 29. While slider 23 slides upward, it will drive the push block 2 at its upper end to gradually slide out of the inside of assembly machine 1. During the upward sliding of push block 2, it will gradually push the serpentine tube inside material rack 5, thereby causing the two serpentine tubes to slide synchronously from inside material rack 5 to blocking block 10.

[0044] At this time, another sliding column 25, under the action of its own gravity, slides down along the corresponding rectangular groove 16, causing the connected slider 23 to slide down, so that the slider 23 gradually slides into the assembly machine 1. The sliding of the slider 23 will pull the push block 15 at its upper end, causing the protrusion 28 at the front end of the push block 15 to move down synchronously. Since the T-shaped protrusion 28 slides inside the T-shaped groove 27, and the linkage plate 14 is externally slidably set inside the assembly machine 1, the downward movement of the protrusion 28 will drive the linkage plate 14 to slide vertically downward inside the assembly machine 1 through the groove 27.

[0045] The downward movement of the linkage plate 14 will cause the connecting rod 12 at its upper end to slide downward along the inside of the assembly machine 1, thereby causing the fixing plate 11 to move downward synchronously. The downward movement of the fixing plate 11 will drive the connecting block 13 and the pressure block 7 to move synchronously through the third screw 9. Finally, the lower end of the blocking block 10 will gradually fit with the processing position at the upper end of the assembly machine 1 and block the serpentine tube. The inclined surface at the lower end of the pressure block 7 will squeeze and fix the serpentine tube, thereby completing the positioning.

[0046] When push block 2 moves up to the highest point and push block 15 slides down to the lowest point, reciprocating screw 20 continues to rotate, and rack 18 continues to slide relative to each other inside assembly machine 1. At this time, sliding column 25 will slide horizontally along the upper end of rectangular groove 16 towards blocking block 10, thereby causing push block 2 to move horizontally along the upper end of assembly machine 1. During the horizontal movement, push block 2 will push the two serpentine tubes to move synchronously to one side.

[0047] The serpentine tube generally has a plug and a slot that fit together at both ends. There is a wedge-shaped surface between the plug and the slot. When the buckle and the slot are pressed together, the connection and fixation between the two serpentine tubes can be completed. The sliding of the push block 2 will make the two serpentine tubes complete the assembly and fixation.

[0048] The push block 15 will move horizontally along the inside of the assembly machine 1 towards the gear 19. During the movement, the protrusion 28 at the front end of the push block 15 will slide horizontally along the groove 27 at the rear end of the linkage plate 14, so that the blocking block 10 and the pressure block 7 are stationary during the movement of the push block 15, thereby ensuring the docking accuracy.

[0049] When the sliding column 25 drives the push block 2 to slide along the uppermost end of the rectangular groove 16 to the side closest to the gear 19, the two serpentine tubes will be assembled and fixed. At this time, the other sliding column 25 will drive the push block 15 to slide along the lowermost end of the rectangular groove 16 to the side closest to the gear 19 and contact the inclined block 17 inside the rectangular groove 16.

[0050] When the sliding column 25 slides from one side toward the gear 19, its rear end will slide along the inclined surface of the inclined block 17 at the lower end of the rectangular groove 16. While sliding along the inclined surface of the inclined block 17, the sliding column 25 will slide forward at the rear end of the slider 23 and compress the spring 26 connected to it, causing the spring 26 to contract. When the sliding column 25 slides to the far side, its rear end will release the contact with the inclined surface of the inclined block 17. At this time, the contracted spring 26 will rebound and push the sliding column 25 to reset, so that the outer rear end of the sliding column 25 will release the contact with the protrusion on one side of the inclined block 17.

[0051] Subsequently, slider 23 will slide horizontally towards motor 4 along the inside of assembly machine 1, thereby causing the two racks 18 to slide in opposite directions inside assembly machine 1, thereby causing the two fixed blocks 29 to slide in opposite directions along the inside of assembly machine 1, thus causing the two sliders 23 to slide in opposite directions.

[0052] Under the gravity of the push block 2 and the pull of the slider 23, the sliding column 25 is pushed to slide down along the highest point of one side of the rectangular groove 16. At this time, the slider 23 and the push block 2 will slide down along the inner wall of the assembly machine 1 in sync, so that the push block 2 will gradually retract into the assembly machine 1, while the guide rod 22 at the lower end of the slider 23 will slide down vertically along the inside of the fixed block 29.

[0053] At this time, another sliding column 25 will slide upward from the protruding part of the inclined block 17 along the side of the rectangular groove 16 near the gear 19. The upward sliding of the slider 23 will cause the push block 15 at its upper end to gradually contact the serpentine tube assembled at the upper end of the assembly machine 1. As the push block 15 continues to move upward, it will gradually slide out from the inside of the assembly machine 1 and make the V-shaped groove at its upper end fit with the diameter of the serpentine tube. The continued upward movement of the push block 15 will cause the serpentine tube to release its contact with the upper end of the assembly machine 1.

[0054] The upward movement of slider 23 will cause the upper protrusion 28 to move upward synchronously. The upward movement of protrusion 28 will cause the linkage plate 14 to slide vertically upward along the inner wall of the assembly machine 1 through the groove 27. The upward movement of linkage plate 14 will cause the two connecting rods 12 to slide vertically upward synchronously along the inner wall of the assembly machine 1. The upward movement of connecting rods 12 will push the fixing plate 11 between their upper ends to move upward. The upward movement of fixing plate 11 will cause the third screw 9 to move upward synchronously. The third screw 9 will cause the connecting block 13 connected to it to move upward. The connecting block 13 will slide vertically upward along the inside of the connecting frame 8. The upward movement of connecting block 13 will cause the pressure block 7 on one side of it to slide upward synchronously.

[0055] When the connecting block 13 slides up to its upper end and fits against the upper end of the connecting frame 8, the connecting block 13 continues to slide upward. At this time, the connecting block 13 will push the connecting frame 8 to move upward in sync. The upward movement of the connecting frame 8 will drive the blocking block 10 at its lower end to move upward in sync, thereby gradually releasing the blocking block 10 from contact with the upper end of the assembly machine 1 and releasing the obstruction of the serpentine tube after installation.

[0056] At this point, the two racks 18 continue to slide horizontally in opposite directions along the inner wall of the assembly machine 1, thereby causing the sliding column 25 to slide in opposite directions along the inside of the rectangular groove 16. At this time, the push block 2 will move towards the motor 4 on the inner wall of the assembly machine 1. Subsequently, the sliding column 25 will slide on the inclined surface on one side of the inclined block 17 and squeeze the spring 26. Then, the sliding column 25 will contact the protruding part on the other side of the inclined block 17, effectively preventing the sliding column 25 from deviating from the moving path. The push block 15 will drive the serpentine tube assembled at its upper end to move towards the receiving area, thereby realizing the automatic unloading of the assembled serpentine tube. Subsequently, the push block 15 and the push block 2 will return to the initial processing position. The entire process is mechanically linked, without the need for manual intervention in the intermediate links. Only manual replenishment of raw materials and collection of finished products are required, reducing the intensity of manual labor and effectively improving production efficiency.

[0057] The third screw 9 on the fixed plate 11 can adjust the height of the connecting block 13. During the adjustment process, the connecting block 13 will drive the pressure block 7 to slide vertically along the inside of the connecting frame 8. At the same time, by rotating the second screw 6 on one side of the pressure block 7, the pressure block 7 will slide horizontally along the axis of the second screw 6 inside the connecting block 13, thereby realizing the adjustment of the position of the pressure block 7, so that the pressure block 7 can be adapted to serpentine pipes of different diameters.

[0058] Before assembly, the operator can manually rotate the first screw 3 to adjust the distance between the push block 2 and the slider 23, thereby adapting to serpentine tubes of different lengths. During the rotation of the first screw 3, it will drive the push block 2 to move synchronously. At this time, the guide block 24 on one side of the push block 2 will slide inside the slider 23. The guide block 24 is rectangular, and the slider 23 has a corresponding rectangular guide groove. The sliding of the guide block 24 will play a guiding role. There is no need to replace the entire part, the changeover cost is low, and it meets the needs of mass production of multiple specifications.

[0059] It should be noted that the rack 18 and gear 19 adopt a 1:1 meshing transmission ratio to ensure that the two racks 18 move at equal speeds and in opposite directions. The gear 19 is rotatably connected to the inner wall of the assembly machine 1 through a deep groove ball bearing, which can reduce the radial runout error during the transmission process. The rectangular block 21 and the slide rail at the front end of the assembly machine 1 adopt a clearance fit. The length of the slide rail matches the effective stroke of the reciprocating screw 20 to ensure that the straightness error of the horizontal reciprocating motion of the rectangular block 21 is small, thereby ensuring the synchronization and stability of the rack 18 transmission.

[0060] The angle between the inclined section and the horizontal section of the rectangular groove 16 is set to 45 degrees. The outer diameter of the sliding column 25 is fitted with the inner wall of the rectangular groove 16. The outer surface of the sliding column 25 is chrome-plated, and the inner wall of the rectangular groove 16 is nitrided to reduce the coefficient of sliding friction. The movement trajectory of the sliding column 25 is forcibly constrained by the rectangular groove 16. When the rack 18 drives the slider 23 to move horizontally, the sliding column 25 first slides along the inclined section of the rectangular groove 16 to realize the vertical lifting and lowering of the slider 23. When the sliding column 25 slides to the horizontal section of the rectangular groove 16, the slider 23 switches to horizontal movement. The seamless switching between lifting and horizontal movement is forcibly realized through the mechanical structure to ensure that the action sequence of the push block 2 and the push block 15 is matched.

[0061] Spring 26 is a cylindrical helical compression spring made of stainless steel, which has good fatigue resistance and can effectively avoid elastic failure caused by excessive compression and excessive stretching. It can also prevent corrosion from affecting the elasticity. The two ends of spring 26 are fixed to sliding column 25 and slider 23 by buckles. The buckles adopt an elastic snap-fit ​​structure to ensure that spring 26 is firmly installed and easy to replace. When sliding column 25 slides along the inclined surface of inclined block 17, spring 26 is compressed to the preset stroke and stores elastic potential energy. When sliding column 25 is separated from inclined surface of inclined block 17, the elastic potential energy of spring 26 is released, pushing sliding column 25 to quickly return to the initial position of rectangular groove 16, ensuring the timeliness of the next round of action cycle.

[0062] The V-shaped groove at the upper end of the push block 15 ensures that the tube body is balanced under force when lifted, preventing tilting and slippage. The inner walls of the V-shaped groove at the upper end of the push block 15 and the V-shaped groove on one side of the blocking block 10 are covered with polyurethane anti-slip pads, which can increase the friction with the serpentine tube and prevent the tube body from sliding when pressed. The horizontal displacement of the pressure block 7 can be finely adjusted by rotating the second screw 6. Combined with the vertical displacement adjusted by the third screw 9, stepless adjustment of the pressing force can be achieved. When the pressure block 7 contacts the serpentine tube, the tube body is automatically centered through the inclined plane self-centering principle, which improves the positioning accuracy.

[0063] The material rack 5 adopts an internally inclined structure with internally separated guide grooves. Wear-resistant nylon lining strips are installed at the bottom of the guide grooves to ensure that the serpentine tubes slide down in an orderly manner under their own weight. The material rack 5 has an elastic baffle at the discharge port. The baffle only allows two parallel serpentine tubes to pass through simultaneously, avoiding multiple tubes from being discharged at the same time. When the push block 2 moves upward, it pushes the baffle to deform, and the serpentine tube slides down to the processing channel. After the push block 2 moves downward, the baffle resets, realizing orderly material feeding.

[0064] The material rack 5 is equipped with a photoelectric sensor. The photoelectric sensor emits infrared light and determines the presence of objects by detecting the reflected signals. It can then detect in real time whether there is a serpentine tube in the material rack 5. When the sensor detects that there is a serpentine tube in the material rack 5, it will immediately send a trigger signal to the control panel of the equipment. After receiving the signal and completing the logic judgment, the control panel will automatically start the motor 4 to drive the equipment into the complete automatic assembly and unloading process of the serpentine tube. There is no need for manual start-up, which further improves the automation level and ease of operation of the equipment, effectively reduces the manual intervention links, and ensures the continuity of production.

[0065] The middle part of the upper end of the assembly machine 1 and the lower end of the material rack 5 are provided with V-shaped grooves, which allow the serpentine tube to slide along the V-shaped grooves during the pushing process. This ensures the coaxial accuracy of the plug and slot during docking. The receiving area on one side of the upper end of the assembly machine 1 is provided with an inclined receiving plate. The surface of the receiving plate is covered with a rubber buffer layer. The end of the receiving plate is provided with a limit block to prevent the finished serpentine tube from slipping. The length of the receiving plate matches the maximum length of the finished product to ensure a smooth feeding process without collision damage.

[0066] A pressure sensor is installed on the side of the connecting block 13 near the blocking block 10. The pressure sensor is electrically connected to the equipment control panel. When the serpentine tube is in place, the clamping force of the pressure block 7 reaches the preset threshold. The pressure sensor sends a signal to the control panel. The control panel determines that the assembly is qualified and triggers the unloading process. If the pressure value detected by the pressure sensor does not reach the preset threshold, it is determined that the assembly is abnormal. The motor 4 is immediately stopped, and an alarm signal is issued through the alarm indicator light inside the assembly machine 1. At the same time, the buzzer sounds an alarm to prompt the operator to troubleshoot the fault.

[0067] Motor 4 is a servo motor. The housing of motor 4 is equipped with heat dissipation fins, and the surface of the heat dissipation fins is anodized to enhance the heat dissipation effect. The first screw 3, the second screw 6, and the third screw 9 all have trapezoidal threads. In addition, the first screw 3, the second screw 6, and the third screw 9 are all equipped with locking nuts. The locking nuts are all made of stainless steel. The locking nuts are threaded with the screws. After adjustment, tightening the locking nuts locks the screw position through friction, preventing the screws from loosening during equipment operation. The locking nuts have anti-slip textures on the outside for easy manual tightening. The screw ends are marked with scales, which allows operators to quickly position and adjust according to the specifications of the serpentine tube without repeated measurements.

[0068] All electrical components mentioned in this document are connected to the control panel and power supply. The control panel is a conventional and known device. All standard parts used in this application can be purchased from the market. Irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each part all adopt mature existing technologies such as bolts, rivets, welding and other conventional methods. Mechanical parts, components and equipment all adopt conventional models in the existing technology. Circuit connections adopt conventional connection methods in the existing technology. Therefore, they will not be described in detail. The contents not described in detail in this specification are all existing technologies known to those skilled in the art. Their functions, specific components and principles are clear to those skilled in the art. Therefore, they will not be described in detail. Furthermore, the model parameters of each electrical appliance are not specifically limited. Conventional equipment can be used.

[0069] Working principle: Before assembly, the operator can manually rotate the first screw 3 to adjust the distance between the push block 2 and the slider 23 to accommodate serpentine tubes of different lengths. The guide block 24 on one side of the push block 2 will slide inside the slider 23, which will play a guiding role. The operator can also manually rotate the third screw 9 to change the height of the connecting block 13, thereby adjusting the vertical position of the pressure block 7. By rotating the second screw 6, the pressure block 7 can be finely adjusted within the connecting block 13. With its lower inclined surface, it can be used to press serpentine tubes of different diameters.

[0070] When assembling the serpentine tube, the starter motor 4 drives the reciprocating screw 20 at its output end to rotate inside the assembly machine 1, thereby driving the rectangular block 21 to slide horizontally back and forth along the inner wall of the assembly machine 1. The rectangular block 21 will synchronously drive a rack 18 connected to it to move. The movement of one rack 18 will drive the gear 19 to rotate, thereby driving the other rack 18 to move relative to it. The movement of the two racks 18 will synchronously drive the fixed block 29 at its rear end, so that the guide rod 22 and the slider 23 move synchronously.

[0071] In the initial state of the device, the sliding column 25 on the side closer to the motor 4 is located at the lowest end of the corresponding rectangular groove 16 on the side closer to the motor 4 and is in contact with the protruding part of the inclined block 17, while the sliding column 25 on the side away from the motor 4 will be at the highest end of the rectangular groove 16 on the side away from the motor 4.

[0072] When the slider 23 moves with the rack 18, the sliding column 25 at its rear end will slide along the inside of the rectangular groove 16. The sliding column 25 near the motor 4 will climb up along the inclined convex surface of the inclined block 17 during the sliding process, and push the slider 23 to move upward. The slider 23 moves upward and drives the push block 2 at its upper end to gradually extend out of the assembly machine 1, thereby pushing the lowest serpentine tube in the material rack 5 to one side, causing it to slide towards the blocking block 10.

[0073] Meanwhile, the slider 23 on the other side, under its own weight and the sliding of the slider 23, drives its sliding column 25 to move downward along the rectangular groove 16, causing the slider 23 to move downward as a whole, which in turn pulls the push block 15 at its upper end to move downward. The protrusion 28 at the front end of the push block 15 is embedded in the T-shaped groove 27 at the rear end of the linkage plate 14. The downward movement of the protrusion 28 will drive the linkage plate 14 to descend vertically along the inside of the assembly machine 1, and cause the fixing plate 11 to move downward synchronously. The third screw 9 will drive the connecting block 13 and the pressure block 7 to descend synchronously, and finally make the lower end of the blocking block 10 fit against the upper side of the assembly machine 1 and form a block on the front end of the serpentine tube. As the slider 23 continues to move downward, the inclined surface at the lower end of the pressure block 7 will press the serpentine tube tightly.

[0074] When push block 2 moves to the highest point and push block 15 is at the lowest point, reciprocating screw 20 continues to rotate and the two racks 18 continue to slide relative to each other. At this time, sliding column 25 moves horizontally along the upper end of rectangular groove 16, driving push block 2 to push horizontally at the upper end of assembly machine 1. Since the two ends of the serpentine tube are respectively provided with mutually cooperating plugs and slots, and the mating surface adopts a wedge structure, the horizontal pushing force of push block 2 causes the buckles and slots of adjacent serpentine tubes to embed and lock into each other, thereby completing the assembly and fixing.

[0075] During this process, the push block 15 moves synchronously toward the gear 19, and its front end protrusion 28 slides horizontally in the groove 27 of the linkage plate 14 to ensure that the blocking block 10 and the pressure block 7 remain stationary, thus avoiding interference with the assembly process.

[0076] When the sliding column 25 pushes the push block 2 to the side of the rectangular groove 16 closest to the gear 19, the two serpentine tubes are reliably connected. At this time, the other sliding column 25 also slides to the bottom of the rectangular groove 16 closest to the gear 19 and contacts the inclined surface of the inclined block 17. As the sliding column 25 continues to move, it slides along the inclined surface and compresses the spring 26 forward. After sliding past the end of the inclined surface, the spring 26 rebounds and pushes the sliding column 25 to reset, so that it is separated from the contact of the inclined surface of the inclined block 17.

[0077] Subsequently, the two racks 18 begin to slide in opposite directions, causing the sliders 23 to slide in opposite directions. Under the action of its own weight and the pulling force of the sliders 23, the push block 2 drives the sliding column 25 to slide down from the highest point of the rectangular groove 16, thereby causing the push block 2 to gradually retract into the assembly machine 1. At the same time, the sliding column 25 on the other side will slide upward along the protrusion of the inclined block 17, pushing the push block 15 to move upward. The V-shaped groove at the upper end of the push block 15 fits with the outer diameter of the assembled serpentine tube. Continuing to move upward can lift it away from the processing station.

[0078] The upward movement of the push block 15 synchronously drives the protrusion 28 to move upward, which in turn drives the linkage plate 14 to move upward through the groove 27. This, in turn, pushes the fixing plate 11, the connecting block 13, and the blocking block 10 upward through the connecting rod 12, thereby removing the obstruction to the finished serpentine tube. Subsequently, the push block 15 continues to move horizontally, pushing the assembled serpentine tube to the receiving area to achieve automatic unloading. Finally, the push block 2 and the push block 15 will return to the initial position, thus completing one work cycle.

[0079] Other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and disclosure of the invention. This application is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of the invention are indicated by the following claims.

[0080] It should be understood that the present invention is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

[0081] The above description is merely a preferred embodiment of the present invention and does not constitute any limitation on the present invention. Any simple modifications, alterations, or equivalent structural changes made to the above embodiments based on the technical essence of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A serpentine tube assembly system, characterized in that, The assembly machine (1) includes a motor (4) fixedly mounted on one side of the assembly machine (1), a reciprocating lead screw (20) fixedly mounted on the output end of the motor (4), a rectangular block (21) threadedly connected to the external thread of the reciprocating lead screw (20), a gear (19) rotatably mounted at the lower end of the assembly machine (1), and racks (18) slidably mounted on both sides of the assembly machine (1). A fixing block (29) is fixedly mounted on the rear end of each rack (18) away from the gear (19). Guide rods (22) are slidably arranged inside the two fixed blocks (29), sliders (23) are fixedly arranged at the upper ends of the two guide rods (22), and sliding columns (25) are slidably arranged at the rear ends of the two sliders (23). Rectangular grooves (16) are opened on both sides near the rear end of the assembly machine (1), and inclined blocks (17) are fixedly arranged on one side near the lower end of the two rectangular grooves (16). A push block (15) is fixedly installed on the upper end of one of the two sliders (23) away from the motor (4). A linkage plate (14) is slidably installed on the end of the assembly machine (1) near the push block (15). A fixing plate (11) is installed on the upper end of the assembly machine (1) away from the motor (4). A third screw (9) is rotatably installed in the middle of the upper end of the fixing plate (11). A connecting block (13) is threadedly connected to the outside of the third screw (9). A second screw (6) is rotatably installed on the side of the connecting block (13) near the motor (4). A pressure block (7) is threadedly connected to the outside of the second screw (6).

2. The serpentine tube assembly system according to claim 1, characterized in that, The two racks (18) and the gear (19) are meshed and connected. The two racks (18) are parallel. The rear end of the rectangular block (21) is fixedly disposed on the front end of one of the two racks (18) near the motor (4). The outer side of the rectangular block (21) is slidably disposed on the front end inside the assembly machine (1).

3. The serpentine tube assembly system according to claim 1, characterized in that, The two sliding columns (25) are respectively slidably disposed inside the two rectangular slots (16). The two inclined blocks (17) are inclined on the side away from the motor (4). The front ends of the two sliding columns (25) are fixedly disposed with springs (26). The front ends of the two springs (26) are respectively fixedly disposed at the rear ends of the two sliders (23).

4. The serpentine tube assembly system according to claim 1, characterized in that, One of the two sliders (23) is internally threaded to a first screw (3). A push block (2) is rotatably mounted on the side of the first screw (3) near the motor (4). A material rack (5) is fixedly mounted on the upper end of the assembly machine (1). One side of the material rack (5) is located on the side of the push block (2) away from the motor (4). The push block (15) and the push block (2) are both slidably mounted inside the assembly machine (1).

5. The serpentine tube assembly system according to claim 4, characterized in that, A guide block (24) is fixedly provided on the side of the push block (2) away from the motor (4). The guide block (24) is externally slidably disposed inside one of the two sliders (23) on the side closer to the motor (4).

6. The serpentine tube assembly system according to claim 1, characterized in that, The pressure block (7) is externally slidably disposed inside the connecting block (13), and two connecting rods (12) are fixedly disposed at the lower end of the fixing plate (11). One side of the upper end of the linkage plate (14) is fixedly disposed at the lower end of one of the two connecting rods (12).

7. The serpentine tube assembly system according to claim 1, characterized in that, The linkage plate (14) has a groove (27) at its rear end, and the push block (15) has a protrusion (28) fixedly installed at its front end. The protrusion (28) is slidably installed inside the groove (27).

8. The serpentine tube assembly system according to claim 7, characterized in that, Both the groove (27) and the protrusion (28) have T-shaped cross-sections.

9. The serpentine tube assembly system according to claim 1, characterized in that, The connecting block (13) is slidably provided with a connecting frame (8), and a blocking block (10) is fixedly provided at the lower end of the connecting frame (8). The blocking block (10) has a V-shaped groove on the side near the motor (4), and the lower end of the pressure block (7) is inclined on the side near the third screw (9).

10. The serpentine tube assembly system according to claim 9, characterized in that: The upper end of the push block (15) is provided with a V-shaped groove.

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