Spring-loaded bag auxiliary device

Abstract

This utility model relates to the technical field of spring bed processing equipment, and in particular to an auxiliary device for spring-loaded bags, which includes two upper clamping rods, two lower clamping rods, a clamping rod lifting assembly, and a horizontal pushing assembly. Each upper clamping rod has a corresponding lower clamping rod below it. The clamping rod lifting assembly simultaneously drives the two upper clamping rods and the two lower clamping rods to move closer or further apart to clamp or release the spring. The horizontal pushing assembly drives the two upper clamping rods, the two lower clamping rods, and the clamping rod lifting assembly to reciprocate along the conveying direction of the spring bag. When the two upper clamping rods and the two lower clamping rods move towards each other, the two upper clamping rods can straighten the upper half of the spring, and the two lower clamping rods can simultaneously straighten the lower half of the spring, thereby actively applying straightening pressure to the spring to be clamped, ensuring the accuracy and efficiency of spring straightening, and also straightening the spring bag to cover the periphery of the spring, resulting in a better fit and improved production quality.

Description

Technical Field

[0001] This utility model relates to the field of spring bed processing equipment technology, and in particular to a clamping spring bag pulling auxiliary device. Background Technology

[0002] Pocket springs used in mattresses consist of springs encased in non-woven fabric bags. In production, springs processed by a spring forming device are compressed and transported to a spring bagging device. There, the springs are wrapped in non-woven fabric, and a bag opening is welded after each spring is wrapped. When the pocket springs are high-compression springs, the high degree of compression and their inherent elasticity make them prone to bending and deformation inside the bag, preventing them from lying upright and affecting the overall quality of the packaging.

[0003] Existing mattress production equipment uses a spring pusher device between the discharge end of the compression spring unit and the welding unit. This spring pusher device pushes the pocketed springs to the welding unit, where the bag opening is welded shut. During feeding, a limiting zone is formed by several sets of upper and lower pusher springs within the spring pusher device. This zone restricts the movement of the springs within the bag, and the rotating assembly of these springs feeds the spring bag to the welding point. However, this limiting zone passively restricts the springs, resulting in low adjustment precision and potentially affecting production quality. Summary of the Invention

[0004] In order to address the technical deficiencies mentioned in the background art, the purpose of this utility model is to provide a spring-loaded bag-pulling auxiliary device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A spring-loaded bag auxiliary device is located between a spring compression device and a welding device. It includes two upper clamping rods, two lower clamping rods, a clamping rod lifting assembly, and a horizontal pushing assembly. Each upper clamping rod has a corresponding lower clamping rod below it. The two upper clamping rods and two lower clamping rods are used to clamp the spring in the spring bag, with the spring located between the two upper clamping rods. Both upper and lower clamping rods are connected to the clamping rod lifting assembly, which simultaneously drives the two upper and two lower clamping rods to move closer or further apart to clamp or release the spring. The horizontal pushing assembly drives the two upper clamping rods, two lower clamping rods, and the clamping rod lifting assembly to reciprocate along the conveying direction of the spring bag.

[0007] By adopting the above technical solution, the two upper clamping rods and the two lower clamping rods move towards each other, allowing the springs they are to clamp to move radially closer together. This actively applies straightening pressure to the springs, ensuring the accuracy and efficiency of spring straightening. Simultaneously, during the closing process, the two upper and two lower clamping rods straighten the spring pockets on the top and bottom of the spring, ensuring the spring pockets taut and fully cover the periphery of the spring, resulting in a better fit and improved production quality.

[0008] Furthermore, the clamping rod lifting assembly includes a lifting seat, a lifting motor, a transmission unit, an upper fixed seat, and a lower fixed seat. One side of the lifting seat is slidably connected to the frame, and the other side of the lifting seat is vertically arranged with a slide rail. The output shaft of the lifting motor passes through the lifting seat and is connected to the transmission unit. Both the upper fixed seat and the lower fixed seat are slidably connected to the slide rail and are connected to the transmission unit, resulting in higher and more stable lifting motion. The lower side of the upper fixed seat is connected to one end of the two upper clamping rods, and the other ends of the two upper clamping rods protrude and are located above the spring bag. The upper side of the lower fixed seat is connected to one end of the two lower clamping rods, and the other ends of the two lower clamping rods protrude and are located below the spring bag. The lifting motor can drive the upper fixed seat and the lower fixed seat to move synchronously towards each other or away from each other through the transmission unit, resulting in high linkage efficiency, saving time, and improving the working efficiency of clamping the spring.

[0009] Furthermore, the transmission unit includes a transmission plate, a first connecting rod, and a second connecting rod. The center of the transmission plate is fixedly connected to the output shaft of the lifting motor. One end of the first connecting rod is hinged to one side of the transmission plate, and the other end is connected to the lower side of the upper fixed seat. One end of the second connecting rod is hinged to the other side of the transmission plate, and the other end is connected to the lower fixed seat. The transmission plate is located below the slide rail. The portions of the first and second connecting rods located on the lower fixed seat are symmetrically arranged along the length of the slide rail, ensuring that the upper and lower fixed seats have the same stroke, resulting in more precise clamping and improved work efficiency.

[0010] Furthermore, the transmission plate is configured as a circular structure, with a first connecting shaft and a second connecting shaft protruding from the side of the transmission plate facing the lifting seat. The first connecting shaft and the second connecting shaft are located on the same horizontal plane and are symmetrically arranged along the center of the output shaft of the lifting motor. The end of the first connecting shaft facing away from the transmission plate is hinged to one end of the first connecting rod, and the end of the second connecting shaft facing away from the transmission plate is hinged to one end of the second connecting rod, thereby improving the control accuracy of the transmission and making the operation more stable.

[0011] Furthermore, the structure of the first connecting rod is identical to that of the second connecting rod. The first connecting rod includes a first connecting portion, an adjusting rod segment, and a second connecting portion. One end of the first connecting portion is hinged to the first connecting shaft, and the other end of the first connecting portion has a first inner hole. One end of the adjusting rod segment is threaded into the first inner hole. One end of the second connecting portion is connected to the upper fixed seat, and the other end of the second connecting portion has a second inner hole. The other end of the adjusting rod segment is threaded into the second inner hole. This design facilitates adjustment of the lengths of the first and second connecting rods according to actual assembly conditions, offering high compatibility and convenient assembly and debugging.

[0012] Furthermore, the upper fixing seat includes a first fixing plate, a second fixing plate, and a locking bolt. One of the upper clamping rods is fixedly connected to one side of the first fixing plate. A clearance groove is provided on the lower side of the first fixing plate, and the second fixing plate is located within the clearance groove, resulting in a more compact structure and saving space. An adjustment groove is provided on the first fixing plate along the conveying direction of the spring bag. One end of the locking bolt is connected to the second fixing plate, and the other end of the locking bolt passes through the adjustment groove and is fixed to the first fixing plate, which can improve compatibility and accommodate springs of different sizes by adjusting the distance between the two upper clamping rods. The other upper clamping rod is fixed to the second fixing plate, and the two upper clamping rods are located on the same horizontal plane.

[0013] Furthermore, the upper clamping rod has a first clamping surface with a wavy structure on the side facing the lower clamping rod, and the lower clamping rod has a second clamping surface with a wavy structure on the side facing the upper clamping rod. The crests of the first clamping surface and the troughs of the second clamping surface work together to clamp the spring bag, increasing the clamping area and thus increasing friction and tensile force, resulting in a more stable and tighter gripping of the spring bag. The curved shape of the first and second clamping surfaces also helps to protect the spring bag.

[0014] Furthermore, the spring-loaded bag-pulling auxiliary device is provided in two sets, which are mirror images of each other on both sides of the spring bag. They are used to alternately clamp two adjacent springs and transport them to the welding device. The structure is compact, and the two sets are used simultaneously, resulting in higher work efficiency.

[0015] In summary, the beneficial effects of this utility model are as follows:

[0016] This invention features two upper clamping rods and two lower clamping rods that move towards each other, allowing the springs they grip to move radially closer together. This actively applies straightening pressure to the springs, ensuring both accuracy and efficiency in straightening. Simultaneously, as the upper and lower clamping rods close, they straighten the spring pouches above and below the spring, ensuring the pouches tautly cover the spring's periphery for a better fit and improved production quality. The two sets of spring-clamping pouch auxiliary devices work together to enhance straightening and feeding efficiency, enabling uninterrupted operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an embodiment of the two sets of spring-loaded bag-pulling auxiliary devices of this utility model.

[0018] Figure 2 This is a schematic diagram of one embodiment of the clip spring bag pulling auxiliary device of this utility model.

[0019] Figure 3 This is a partial structural schematic diagram from another perspective of an embodiment of the spring-loaded bag-pulling auxiliary device of this utility model.

[0020] Figure 4 This is a schematic diagram of the upper fixing seat of an embodiment of the spring-loaded bag-pulling auxiliary device of this utility model.

[0021] Figure 5 This is a schematic diagram illustrating the usage structure of an embodiment of the spring-loaded bag-pulling auxiliary device of this utility model.

[0022] Explanation of the reference numerals in the figure:

[0023] 1. Spring-loaded bag-pulling auxiliary device; 2. Upper clamping rod; 21. First clamping surface; 3. Lower clamping rod; 31. Second clamping surface; 4. Clamping rod lifting assembly; 41. Lifting seat; 411. Slide rail; 42. Lifting motor; 43. Transmission unit; 431. Transmission plate; 432. First connecting rod; 4321. First connecting part; 4322. Adjusting rod section; 4323. Second connecting part; 433. Second connecting rod; 434. First connecting shaft; 435. Second connecting shaft; 44. Upper fixed seat; 441. First fixed plate; 442. Second fixed plate; 443. Locking bolt; 444. Adjusting groove; 45. Lower fixed seat; 5. Horizontal pushing assembly; 6. Spring compression device; 7. Welding device; 8. Frame. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model are within the protection scope of the present utility model.

[0025] Those skilled in the art should understand that, in the disclosure of this utility model, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0026] In the description of this utility model, the use of terms such as "several" means one or more, with "multiple" meaning two or more. Terms like "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of terms like "first," "second," and "third" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, the quantity of indicated technical features, or the sequential relationship between indicated technical features.

[0027] The following is in conjunction with the appendix Figure 1-5 The embodiments of this utility model will be described in further detail below.

[0028] Spring-loaded bag auxiliary device 1, such as Figure 1 , Figure 2 , Figure 3 , Figure 5 As shown, it is positioned between the spring compression device 6 and the welding device 7. It includes two upper clamping rods 2, two lower clamping rods 3, a clamping rod lifting assembly 4, and a horizontal pushing assembly 5. Each upper clamping rod 2 has a corresponding lower clamping rod 3 below it. The two upper clamping rods 2 and the two lower clamping rods 3 are used to clamp the spring in the spring bag, with the spring located between the two upper clamping rods 2. Both the two upper clamping rods 2 and the two lower clamping rods 3 are connected to the clamping rod lifting assembly 4, which simultaneously drives the two upper clamping rods 2 and the two lower clamping rods 3 to move closer or further apart to clamp or release the spring. The horizontal pushing assembly 5 drives the two upper clamping rods 2, the two lower clamping rods 3, and the clamping rod lifting assembly 4 to reciprocate along the conveying direction of the spring bag.

[0029] When the two upper clamping rods 2 and the two lower clamping rods 3 move towards each other, the two upper clamping rods 2 can straighten the upper half of the spring, while the two lower clamping rods 3 can simultaneously straighten the lower half of the spring, resulting in higher efficiency. Furthermore, as the two upper clamping rods 2 and the two lower clamping rods 3 move radially closer to the spring they are clamping, they can actively apply straightening pressure to ensure the accuracy and efficiency of spring straightening. Simultaneously, during the closing process, the two upper clamping rods 2 and the two lower clamping rods 3 can straighten the spring pockets on the top and bottom of the spring, ensuring the spring pockets tautly cover the circumference of the spring for a better fit and improved production quality.

[0030] In some case examples, please refer to Figure 2 , Figure 3 The clamping rod lifting assembly 4 includes a lifting base 41, a lifting motor 42, a transmission unit 43, an upper fixed base 44, and a lower fixed base 45. One side of the lifting base 41 is slidably connected to the frame 8, and the other side of the lifting base 41 is vertically provided with a slide rail 411. The output shaft of the lifting motor 42 passes through the lifting base 41 and is connected to the transmission unit 43. Both the upper fixed base 44 and the lower fixed base 45 are slidably connected to the slide rail 411 and are both connected to the transmission unit 43, resulting in higher and more stable lifting motion. The lower side of the upper fixed base 44 is connected to one end of the two upper clamping rods 2, and the other ends of the two upper clamping rods 2 protrude and are located above the spring bag. The upper side of the lower fixed base 45 is connected to one end of the two lower clamping rods 3, and the other ends of the two lower clamping rods 3 protrude and are located below the spring bag. The lifting motor 42 can drive the upper fixed base 44 and the lower fixed base 45 to move synchronously towards each other or away from each other through the transmission unit 43, resulting in high linkage efficiency, saving time, and improving the working efficiency of clamping the spring.

[0031] Preferably, the transmission unit 43 includes a transmission plate 431, a first connecting rod 432, and a second connecting rod 433. The center of the transmission plate 431 is fixedly connected to the output shaft of the lifting motor 42. One end of the first connecting rod 432 is hinged to one side of the transmission plate 431, and the other end is connected to the lower side of the upper fixed seat 44. One end of the second connecting rod 433 is hinged to the other side of the transmission plate 431, and the other end is connected to the lower fixed seat 45. The transmission plate 431 is located below the slide rail 411. The portions of the first connecting rod 432 and the second connecting rod 433 located on the lower fixed seat 45 are symmetrically arranged along the length of the slide rail 411, ensuring that the upper fixed seat 44 and the lower fixed seat 45 have the same stroke, resulting in more precise clamping and improved work efficiency.

[0032] Specifically, to make the structure more compact and provide better protection, the transmission plate 431 can be designed as a circular structure. A first connecting shaft 434 and a second connecting shaft 435 protrude from the side of the transmission plate 431 facing the lifting seat 41. The first connecting shaft 434 and the second connecting shaft 435 are located on the same horizontal plane and are symmetrically arranged along the center of the output shaft of the lifting motor 42. The end of the first connecting shaft 434 facing away from the transmission plate 431 is hinged to one end of the first connecting rod 432, and the end of the second connecting shaft 435 facing away from the transmission plate 431 is hinged to one end of the second connecting rod 433, improving the control precision of the transmission and making the operation more stable.

[0033] In operation, the lifting motor 42 drives the transmission plate 431 to rotate counterclockwise. The first connecting shaft 434 and the second connecting shaft 435 have a height difference. The first connecting shaft 434 drives the first connecting rod 432 downwards, pulling the upper fixed seat 44 downwards. The second connecting shaft 435 pushes the second connecting rod 433 upwards, pushing the lower fixed seat 45 upwards, thus closing the upper clamping rod 2 and the lower clamping rod 3 to clamp the spring. When the lifting motor 42 reverses, the transmission plate 431 rotates clockwise, and the first connecting shaft 434 and the second connecting shaft 435 return to their initial positions. The first connecting shaft 434 drives the first connecting rod 432 upwards, pushing the upper fixed seat 44 upwards. The second connecting shaft 435 pushes the second connecting rod 433 downwards, pushing the lower fixed seat 45 downwards. The upper and lower fixed seats 44 and 45 return to their initial positions, and the lifting motor 42 stops operating. The horizontal pushing component 5 drives the two upper clamping rods 2, the two lower clamping rods 3, and the clamping rod lifting component 4 in the same group to return to the discharge end of the spring compression device 6, in preparation for the next clamping spring bag pulling operation.

[0034] For preferred options, please refer to [the provided text]. Figure 3 The structure of the first connecting rod 432 is the same as that of the second connecting rod 433. The first connecting rod 432 includes a first connecting part 4321, an adjusting rod segment 4322, and a second connecting part 4323. One end of the first connecting part 4321 is hinged to the first connecting shaft 434, and the other end of the first connecting part 4321 has a first inner hole. One end of the adjusting rod segment 4322 is threaded into the first inner hole. One end of the second connecting part 4323 is connected to the upper fixed seat 44, and the other end of the second connecting part 4323 has a second inner hole. The other end of the adjusting rod segment 4322 is threaded into the second inner hole. This design allows for easy adjustment of the lengths of the first connecting rod 432 and the second connecting rod 433 according to the actual assembly situation, offering high compatibility and convenient assembly and debugging.

[0035] Of course, besides using the aforementioned clamping rod lifting assembly 4 to drive the upper fixed seat 44 and lower fixed seat 45 to move relative to each other to clamp the spring band, a cylinder-driven method can also be used. Specifically, both the upper fixed seat 44 and lower fixed seat 45 are connected to a telescopic cylinder. The two sets of telescopic cylinders are used to achieve the opposite movement of the fixed seat 44 and lower fixed seat 45, so that the upper clamping rod 2 and lower clamping rod 3 can close together to clamp the spring band.

[0036] In some embodiments, please refer to Figure 3 , Figure 4 The upper fixing base 44 includes a first fixing plate 441, a second fixing plate 442, and a locking bolt 443. One of the upper clamping rods 2 is fixedly connected to one side of the first fixing plate 441. A clearance groove is provided on the lower side of the first fixing plate 441, and the second fixing plate 442 is located in the clearance groove, making the structure more compact and saving space. An adjustment groove 444 is provided on the first fixing plate 441 along the conveying direction of the spring bag. One end of the locking bolt 443 is connected to the second fixing plate 442, and the other end of the locking bolt 443 passes through the adjustment groove 444 and is fixed to the first fixing plate 441, which can improve compatibility and accommodate springs of different sizes by adjusting the distance between the two upper clamping rods 2. The other upper clamping rod 2 is fixed to the second fixing plate 442, and the two upper clamping rods 2 are located on the same horizontal plane.

[0037] In some embodiments, please refer to Figure 2 The upper clamping rod 2 has a first clamping surface 21 with a wavy structure on the side facing the lower clamping rod 3, and the lower clamping rod 3 has a second clamping surface 31 with a wavy structure on the side facing the upper clamping rod 2. The crests of the first clamping surface 21 and the troughs of the second clamping surface 31 work together to clamp the spring bag, increasing the clamping area and thus increasing friction and tensile force, resulting in a more stable and tighter gripping of the spring bag. The curved shape of the first clamping surface 21 and the second clamping surface 31 also helps to protect the spring bag.

[0038] In some embodiments, please refer to Figure 1 , Figure 5 The spring-loaded bag-pulling auxiliary device 1 is provided in two sets. The two sets of spring-loaded bag-pulling auxiliary devices 1 are mirror images of each other on both sides of the spring bag. They are used to alternately clamp two adjacent springs and transport them to the welding device 7. The structure is compact, the two sets are used synchronously, and there is no interruption in operation, which makes the work efficiency higher.

[0039] Specifically, when one set of spring-loaded bag-pulling auxiliary devices 1 clamps and conveys the spring bag to the welding device 7, another set of spring-loaded bag-pulling auxiliary devices 1 is located at the discharge end of the spring compression device 6. The two upper clamping rods 2 and the two lower clamping rods 3 are in the initial position, ready to move towards each other to clamp the spring below. By adjusting the process to avoid positioning, uninterrupted operation is achieved, and the efficiency of pushing operation is improved.

[0040] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A spring-loaded bag-pulling auxiliary device, disposed between a spring compression device (6) and a welding device (7); characterized in that, It includes two upper clamping rods (2), two lower clamping rods (3), a clamping rod lifting assembly (4), and a horizontal pushing assembly (5); each of the upper clamping rods (2) is provided with a corresponding lower clamping rod (3) below it. The two upper clamping rods (2) and the two lower clamping rods (3) are used to clamp the spring in the spring bag, and the spring is located between the two upper clamping rods (2); the two upper clamping rods (2) and the two lower clamping rods (3) are connected to the clamping rod lifting assembly (4). The clamping rod lifting assembly (4) is used to simultaneously drive the two upper clamping rods (2) and the two lower clamping rods (3) to move closer or further away from each other to clamp or release the spring; the horizontal pushing assembly (5) is used to drive the two upper clamping rods (2), the two lower clamping rods (3), and the clamping rod lifting assembly (4) to reciprocate along the conveying direction of the spring bag.

2. The spring-loaded bag-pulling auxiliary device according to claim 1, characterized in that, The clamp lifting assembly (4) includes a lifting seat (41), a lifting motor (42), a transmission unit (43), an upper fixed seat (44), and a lower fixed seat (45). One side of the lifting seat (41) is slidably connected to the frame (8), and the other side of the lifting seat (41) is provided with a slide rail (411) in a vertical direction. The output shaft of the lifting motor (42) passes through the lifting seat (41) and is connected to the transmission unit (43). The upper fixed seat (44) and the lower fixed seat (45) are both slidably connected to the slide rail (411) and are both connected to the transmission unit (43). The lower side of the upper fixed seat (44) is connected to one end of the two upper clamping rods (2), and the other end of the two upper clamping rods (2) protrudes and is located above the spring bag. The upper side of the lower fixed seat (45) is connected to one end of the two lower clamping rods (3), and the other end of the two lower clamping rods (3) protrudes and is located below the spring bag.

3. The spring-loaded bag-pulling auxiliary device according to claim 2, characterized in that, The transmission unit (43) includes a transmission plate (431), a first connecting rod (432), and a second connecting rod (433). The center of the transmission plate (431) is fixedly connected to the output shaft of the lifting motor (42). One end of the first connecting rod (432) is hinged to one side of the transmission plate (431), and the other end of the first connecting rod (432) is connected to the lower side of the upper fixed seat (44). One end of the second connecting rod (433) is hinged to the other side of the transmission plate (431), and the other end of the second connecting rod (433) is connected to the lower fixed seat (45). The transmission plate (431) is located below the slide rail (411), and the portions of the first connecting rod (432) and the second connecting rod (433) located on the lower fixed seat (45) are symmetrically arranged along the length direction of the slide rail (411).

4. The spring-loaded bag-pulling auxiliary device according to claim 3, characterized in that, The transmission plate (431) is configured as a circular structure. A first connecting shaft (434) and a second connecting shaft (435) are protruding from the side of the transmission plate (431) facing the lifting seat (41). The first connecting shaft (434) and the second connecting shaft (435) are located on the same horizontal plane and are symmetrically arranged along the center of the output shaft of the lifting motor (42). The end of the first connecting shaft (434) away from the transmission plate (431) is hinged to one end of the first connecting rod (432), and the end of the second connecting shaft (435) away from the transmission plate (431) is hinged to one end of the second connecting rod (433).

5. The spring-loaded bag-pulling auxiliary device according to claim 4, characterized in that, The structure of the first connecting rod (432) is the same as that of the second connecting rod (433); the first connecting rod (432) includes a first connecting part (4321), an adjusting rod segment (4322) and a second connecting part (4323); one end of the first connecting part (4321) is hinged to the first connecting shaft (434), and the other end of the first connecting part (4321) is provided with a first inner hole, and one end of the adjusting rod segment (4322) is threaded to the first inner hole; one end of the second connecting part (4323) is connected to the upper fixed seat (44), and the other end of the second connecting part (4323) is provided with a second inner hole, and the other end of the adjusting rod segment (4322) is threaded to the second inner hole.

6. The spring-loaded bag-pulling auxiliary device according to claim 2, characterized in that, The upper fixing seat (44) includes a first fixing plate (441), a second fixing plate (442), and a locking bolt (443); one of the upper clamping rods (2) is fixedly connected to one side of the first fixing plate (441); a clearance groove is provided on the lower side of the first fixing plate (441), and the second fixing plate (442) is located in the clearance groove; an adjustment groove (444) is provided on the first fixing plate (441) along the conveying direction of the spring bag; one end of the locking bolt (443) is threaded to the second fixing plate (442), and the other end of the locking bolt (443) passes through the adjustment groove (444) and is fixed to the first fixing plate (441); another upper clamping rod (2) is fixed on the second fixing plate (442), and the two upper clamping rods (2) are located on the same horizontal plane.

7. The spring-loaded bag-pulling auxiliary device according to claim 1, characterized in that, The upper clamping rod (2) has a first clamping surface (21) with a wavy structure on the side facing the lower clamping rod (3), and the lower clamping rod (3) has a second clamping surface (31) with a wavy structure on the side facing the upper clamping rod (2); the crest of the first clamping surface (21) and the trough of the second clamping surface (31) cooperate to clamp the spring bag.

8. The spring-loaded bag-pulling auxiliary device according to claim 1, characterized in that, The spring-loaded bag-pulling auxiliary device is provided in two sets, which are mirror images of each other on both sides of the spring bag, and are used to alternately clamp two adjacent springs and transport them to the welding device (7).

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