Cotton sliver can spring looping machine and control method thereof

Abstract

The invention relates to a cotton sliver can spring looping machine and a control method thereof.The cotton sliver can spring looping machine comprises a machine base, a looping mechanism used for bending a metal wire into a spring is arranged on the machine base, and a stamping mechanism arranged on one side of the looping mechanism is further arranged on the machine base; the punching mechanism comprises a mounting base, the mounting base is connected with a rotating stand column and a swing angle movement device used for controlling the rotating stand column to axially swing relative to the looping mechanism, and the rotating stand column is connected with a punching forming device used for punching the spring in the circumferential direction when the spring is spirally shaped; according to the coiling machine, automatic production of springs is achieved, the automation degree is improved, manpower resource waste can be reduced, a plurality of break angles can be punched in the circumferential direction of the first circle of the sliver can spring through the punch forming device, the production efficiency of the sliver can spring is effectively improved, and the product quality is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of looping machines, and more particularly to a sliver can spring looping machine and its control method. Background Art

[0002] A sliver can is a barrel for placing slivers and is a commonly used tool in textile enterprises. The slivers used in cotton spinning are first placed in the sliver can and then taken out when needed. When discharging the slivers, a spring inside the can pushes them upward, causing the slivers to move upward gradually and keeping the top surface of the coiled sliver at the top opening of the barrel. Currently, in order to better support the slivers, it is necessary to improve the spring. Multiple outwardly protruding corners are bent circumferentially at the top of the spring, and these corners can also play a positioning role. Therefore, the applicant further improves and perfects the looping machine for this specific structure of the spring, enabling the spring and the corners to be formed in one step. Summary of the Invention

[0003] The purpose of the present invention is to solve the above existing problems and provide a sliver can spring looping machine with a simple and reasonable structure, whose main function is to realize the automated production of sliver can springs and punch several corners circumferentially on the first coil of the sliver can spring.

[0004] The sliver can spring looping machine includes a machine base. A looping mechanism for bending a metal wire into a spring is arranged on the machine base. A punching mechanism is also arranged on the machine base on one side of the looping mechanism. The punching mechanism includes an installation base, a rotating column connected to the installation base, and a swing angle movement device for controlling the axial swing of the rotating column relative to the looping mechanism. A punching and forming device for punching the circumference of the spring when the spring spirals out is connected to the rotating column.

[0005] The purpose of the present invention can also be solved by the following technical measures: As a more specific solution, the punching mechanism further includes an installation frame. A transverse movement device is arranged on the installation frame. The installation base is horizontally slidably connected to the installation frame through the transverse movement device. A lifting movement device is arranged on the rotating column. The punching and forming device is vertically slidably connected to the rotating column through the lifting movement device.

[0006] As a further solution, the punching and forming device includes a horizontally arranged punching oil cylinder seat and a punching and forming die slidably connected to the punching oil cylinder seat. A punching and forming bottom die is fixedly connected to one end of the punching oil cylinder seat. A spring pressing cavity is formed between the punching and forming bottom die and the punching and forming die. A punching oil cylinder is arranged at the other end of the punching oil cylinder seat. The piston rod of the punching oil cylinder is connected to the punching and forming die and drives the punching and forming die to reciprocate relative to the punching and forming bottom die.

[0007] As a further solution, a V-shaped recessed forming groove is provided on one side of the stamping die corresponding to the stamping bottom die, and a V-shaped protruding forming block matching the V-shaped recessed forming groove is provided on the stamping bottom die.

[0008] As a further solution, the swing angle motion device includes a swing angle motor base and a swing plate. The swing angle motor base is fixedly connected to the mounting base and connected with a swing angle motor. A swing angle eccentric wheel is connected to the rotating shaft of the swing angle motor, and a first eccentric bearing is arranged on the swing angle eccentric wheel. The swing plate is fixedly connected to the rotating column and correspondingly provided with a swing angle sliding groove slidably matched with the first eccentric bearing, and a support plate for supporting the other end of the swing plate is connected to the swing angle motor base.

[0009] As a further solution, the coiling mechanism includes a straightening device for adjusting the wire, a spring cutting knife device for cutting the wire, a spring forming device for adjusting the spring diameter, and a spring pushing device placed below the spring forming device and for adjusting the spring pitch, which are arranged in sequence along the wire conveying direction.

[0010] As a further solution, the spring forming device includes a forming bottom plate, a forming connecting slide plate connected to the forming bottom plate, and a first driving device for controlling the forward and backward sliding of the forming connecting slide plate. A bending box is arranged on the forming connecting slide plate, and a fixed forming wheel, a movable forming wheel, and a forming motor for controlling the swing angle movement of the movable forming wheel around the outer circumference of the fixed forming wheel are connected to the bending box.

[0011] As a further solution, the spring pushing device includes a pushing bottom plate, a pushing connecting slide plate connected to the pushing bottom plate, and a second driving device for controlling the forward and backward sliding of the pushing connecting slide plate. A connecting rod is installed on the pushing connecting slide plate through a clamping cover, and the end of the connecting rod is adjustably connected with a spring push rod through a chuck. The spring push rod is placed between the spring forming device and the stamping device and reciprocates back and forth driven by the second driving device.

[0012] As a further solution, the spring cutting knife device includes a cutting knife bottom plate, a knife box fixedly arranged on the cutting knife bottom plate, a knife seat and a tangent motor arranged on the knife seat. One end of the knife seat is rotatably hinged to the knife seat through a rotating shaft, and a tangent sliding groove is arranged at the other end. A tangent eccentric wheel is connected to the rotating shaft of the tangent motor, and a second eccentric bearing slidably matched with the tangent sliding groove is arranged on the tangent eccentric wheel. A cutting knife is arranged at one end of the knife seat corresponding to the rotating shaft, and a bottom knife corresponding to the cutting knife is arranged on the knife seat.

[0013] As a further solution, the straightening device includes an automatic wire threading assembly for introducing a wire, a horizontal straightening assembly and a vertical straightening assembly for straightening the wire, a wire pulling assembly for pulling the wire forward, and a wire pressing assembly for pressing the wire, which are arranged in sequence along the wire conveying direction.

[0014] A control method for a cotton bale spring coiling machine includes the following steps: Step S1: Introduce the wire into the straightening device, and the straightening device pulls and straightens the wire; Step S2: The straightened metal bar enters the spring forming device through the spring cutting device, and the spring forming device starts to coil the metal bar; Step S3: During the process of forming the first coil of the spiral spring from the metal bar, the stamping mechanism performs intermittent stamping on the first coil of the spring until the first coil of the spring is formed and several spaced-apart folding angles are stamped thereon; Step S4: The spring pushing device pushes the first coil of the spring outward and stretches the metal bar, and the spring forming device continues to coil the metal bar; Step S5: When the coiling length of the metal bar reaches a preset value and a cotton bale spring is formed, the spring cutting device cuts off the wire; Step S6: Repeat the above steps S2 - S5.

[0015] The cotton bale spring coiling machine of the present invention realizes the automatic production of springs, improves the degree of automation and reduces the waste of human resources. Moreover, by using the stamping forming device, several folding angles can be stamped on the circumferential direction of the first coil of the cotton bale spring without affecting the coiling work of the spring, effectively improving the production efficiency of the cotton bale spring and greatly improving the product quality. Brief Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of an embodiment of the coiling machine in the present invention.

[0017] Figure 2 It is a schematic exploded structural diagram of the stamping mechanism in the present invention.

[0018] Figure 3 It is a schematic structural diagram of the coiling mechanism in the present invention.

[0019] Figure 4 It is a schematic structural diagram of the stamping forming device in the present invention.

[0020] Figure 5 It is a schematic structural diagram of the swing angle motion device in the present invention.

[0021] Figure 6 It is a schematic structural diagram of the spring forming device in the present invention.

[0022] Figure 7 This is a schematic structural diagram of the automatic wire threading component in the present invention.

[0023] Figure 8 This is a schematic structural diagram of the first coil of the spring in the present invention. Specific embodiments

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] As Figures 1 to 8 shown, a tampon barrel spring coiling machine includes a machine base 1, a coiling mechanism 2 for bending a metal wire into a spring is provided on the machine base 1, and a stamping mechanism 3 is further provided on the machine base 1 on one side of the coiling mechanism 2; the stamping mechanism 3 includes a mounting base 31, a rotating column 32 is connected to the mounting base 31, and a swing angle motion device 33 for controlling the axial swing of the rotating column 32 relative to the coiling mechanism 2, and a stamping and forming device 34 for stamping the circumference of the spring when the spring spirals out is connected to the rotating column 32.

[0026] This coiling machine realizes the automatic production of springs, improves the degree of automation and reduces the waste of human resources, and can use the stamping and forming device to stamp a plurality of fold angles on the circumference of the first coil of the tampon barrel spring A without affecting the coiling work of the spring, effectively improving the production efficiency of the tampon barrel spring and greatly improving the product quality.

[0027] The stamping mechanism 3 further includes a mounting frame 35, a transverse movement device 36 is provided on the mounting frame 35, and the mounting base 31 is horizontally slidably connected to the mounting frame 35 through the transverse movement device 36; a lifting movement device 37 is provided on the rotating column 32, and the stamping and forming device 34 is vertically slidably connected to the rotating column 32 through the lifting movement device 37; through the transverse movement device 36 and the lifting movement device 37, the stamping and forming device 34 can slide horizontally or lift up and down to meet the production needs of springs of different specifications.

[0028] The stamping and forming device 34 includes a horizontally arranged stamping oil cylinder base 341 and a stamping and forming die 342 slidably connected to the stamping oil cylinder base 341. A guiding sliding block 345 is connected to the stamping oil cylinder base 341, and a stamping slide rod 346 that is linearly slidably matched with the guiding sliding block 345 is provided on the stamping oil cylinder base 341. One end of the stamping slide rod 346 is connected to the stamping and forming die 342. One end of the stamping oil cylinder base 341 is fixedly connected to a stamping and forming bottom die 343. A spring pressing cavity B is formed between the stamping and forming bottom die 343 and the stamping and forming die 342. A stamping oil cylinder 344 is provided at the other end of the stamping oil cylinder base 341. The piston rod of the stamping oil cylinder 344 is connected to the other end of the stamping slide rod 346 and drives the stamping and forming die 342 to reciprocate relative to the stamping and forming bottom die 343.

[0029] On one side of the stamping and forming die 342 corresponding to the stamping and forming bottom die 343, a V-shaped recessed forming groove 3421 is formed. On the stamping and forming bottom die 343, a V-shaped protruding forming block 3431 that matches the V-shaped recessed forming groove 3421 is provided. The stamping and forming die 342 and the stamping and forming bottom die 343 with such a structure can stamp a fold angle on the first coil of the spring. The stamping and forming die 342 and the stamping and forming bottom die 343 are detachably connected to the stamping oil cylinder base 341, and the stamping and forming die 342 and the stamping and forming bottom die 343 can be replaced according to different shapes required by the spring, making the applicable range of the coil winding machine wider.

[0030] The swing angle motion device 33 includes a swing angle motor base 331 and a swing plate 332. The swing angle motor base 331 is fixedly connected to the installation base 31 and is connected with a swing angle motor 335. A swing angle eccentric wheel 336 is connected to the rotating shaft of the swing angle motor 335, and a first eccentric bearing 337 is arranged on the swing angle eccentric wheel 336. The swing plate 332 is fixedly connected to the rotating column 32 and is correspondingly provided with a swing angle sliding groove 3321 that is slidably matched with the first eccentric bearing 337. A support plate 338 that supports the other end of the swing plate 332 is connected to the swing angle motor base 331. Through the cooperation of the first eccentric bearing 337 and the swing angle sliding groove 3321, the swing plate 332 can drive the rotating column 32 to swing periodically. When a fold angle is required, the stamping and forming device 34 is driven to swing forward so that the metal wire can be clamped in the spring pressing cavity B. After the fold angle is formed, the stamping and forming device 34 is driven to swing backward to avoid the spiral forming path when the metal wire is coiled.

[0031] The coil winding mechanism 2 includes a straightening device 4 for adjusting the metal wire, a spring cutting knife device 5 for cutting the metal wire, a spring forming device 6 for adjusting the spring diameter, and a spring pushing device 7 that is placed below the spring forming device 6 and is used for adjusting the spring pitch, which are arranged in sequence along the metal wire conveying direction.

[0032] The spring forming device 6 includes a forming bottom plate 61. A forming connecting slide plate 62 and a first driving device 63 for controlling the forward and backward sliding of the forming connecting slide plate 62 are connected to the forming bottom plate 61. A bending box 64 is provided on the forming connecting slide plate 62. A fixed forming wheel 65, a movable forming wheel 66, and a forming motor 67 for controlling the angular movement of the movable forming wheel 66 around the outer circumference of the fixed forming wheel 65 are connected to the bending box 64. A fixed shaft 641 and a shaft sleeve 642 rotatably sleeved on the fixed shaft 641 are connected to the bending box 64. One end of the fixed shaft 641 is connected to the fixed forming wheel 65. One end of the shaft sleeve 642 is connected to a bending plate 643. The movable forming wheel 66 is connected to the bending plate 643. A passive gear 644 is provided at the other end of the shaft sleeve 642. The output shaft of the forming motor 67 is connected to an active gear 671 meshing with the passive gear 644. By changing the position of the movable forming wheel 66 relative to the fixed forming wheel 65, the diameter of the spring is adjusted.

[0033] The spring pushing device 7 includes a pushing bottom plate 71. A pushing connecting slide plate 72 and a second driving device 73 for controlling the forward and backward sliding of the pushing connecting slide plate 72 are connected to the pushing bottom plate 71. A connecting rod 74 is installed on the pushing connecting slide plate 72 through a clamping cover. The end of the connecting rod 74 is adjustably connected to a spring push rod 76 through a chuck 75. The spring push rod 76 is placed between the spring forming device 6 and the stamping forming device 34 and reciprocates back and forth driven by the second driving device 73. The angle of the spring push rod 76 can be adjusted through the chuck 75. When the wire is coiled and spirally formed, the spring push rod 76 spreads the wire, and the pitch of the spring is adjusted by the spreading distance.

[0034] The spring cutting device 5 includes a cutting bottom plate 51. A knife box is fixedly provided on the cutting bottom plate 51. A knife seat 52 and a tangent motor 53 are provided on the knife seat 52. One end of the knife seat 52 is rotatably hinged to the knife seat 52 through a rotating shaft 54, and a tangent chute 521 is provided at the other end. A tangent eccentric wheel 55 is connected to the rotating shaft of the tangent motor 53. A second eccentric bearing 56 slidably matched with the tangent chute 521 is provided on the tangent eccentric wheel 55. A cutting knife 57 is provided at the end of the knife seat 52 corresponding to the rotating shaft 54, and a bottom knife 58 is provided on the knife seat 52 corresponding to the cutting knife 57. When the tangent chute 521 and the second eccentric bearing 56 cooperate to drive the knife seat 52 to drive the cutting knife 57 to move back and forth relative to the bottom knife 58, the wire is cut.

[0035] In addition, wear-resistant plates are provided on the opposite side walls of the tangent chute 521 and the swing angle chute 3321, which can reduce wear.

[0036] Specifically, the tool holder includes a bottom tool seat 510 and a cutter clamping plate 511 which are connected to each other. A cutter inner cavity for accommodating the tool seat 52 is formed between the bottom tool seat 510 and the cutter clamping plate 511. A wire guide seat 59 for guiding the metal wire is further connected to the 511. A wire hole 591 is provided on the wire guide seat 59. Wire passing holes 571 and 581 adapted for the metal wire to pass through are respectively provided on the cutter 57 and the bottom cutter 58 corresponding to the wire hole.

[0037] The straightening device 4 includes an automatic wire threading assembly 41 for introducing the metal wire, a horizontal straightening assembly 42, a vertical straightening assembly 43 for straightening the metal wire, a wire pulling assembly 44 for pulling the metal wire forward, and a wire pressing assembly 45 for pressing the metal wire, which are arranged in sequence along the metal wire conveying direction. In this embodiment, the structures of the horizontal straightening assembly 42, the vertical straightening assembly 43, the wire pulling assembly 44 and the wire pressing assembly 45 belong to the prior art and will not be elaborated in detail here; The automatic wire threading assembly 41 mainly includes a connecting base 411. A left gear 412 and a right gear 413 which are meshed with each other are rotatably connected to the connecting base 411. Threading pressure wheels 414 for clamping the metal wire are connected to the axles of the left gear 412 and the right gear 413. A threading motor 415 for driving one of the axles is further connected to the connecting base 411, and a wire inlet seat 416 is arranged between the two threading pressure wheels 414.

[0038] In more embodiments, a spring support platform 9 can be further arranged in front of the looping mechanism 2. When the length of the sliver can spring gradually increases, the spring support platform 9 can support the sliver can spring, avoiding the problem that the front section of the sliver can spring sinks due to excessive weight, resulting in deformation of the rear section and affecting the accuracy of the sliver can spring. Moreover, the height of the spring support platform 9 can be adjusted by a lifting mechanism, which is convenient for adapting to the production of springs of different specifications.

[0039] In addition, in this embodiment, the structures of the transverse movement device 36, the lifting movement device 37, the first driving device 63 and the second driving device 73 are basically the same: It mainly includes a driving motor 81, a coupling 82, a lead screw shaft 83 and a lead screw nut 84. The output end of the driving motor 81 is connected to one end of the coupling 82. The lead screw shaft 83 is connected to the other end of the coupling 82. The lead screw nut 84 is sleeved on the lead screw shaft 83 and is connected to the mounting base 31, or the stamping oil cylinder seat 341, or the forming connection sliding plate 62, or the pushing connection sliding plate 72.

[0040] It also includes a slide rail assembly, which includes a fixed slide rail 85 and a movable slide rail 86. The fixed slide rail 85 is fixedly connected to the installation frame 35, or the rotating column 32, or the forming bottom plate 61, or the pushing material bottom plate 71, and the movable slide rail 86 is fixedly connected to the installation base 31, or the stamping oil cylinder seat 341, or the forming connecting slide plate 62, or the pushing material connecting slide plate 72.

[0041] An embodiment of the present application also discloses a control method, which is applied to the sliver can spring coiling machine described above, and includes the following steps: Step S1: Introduce the metal wire into the straightening device 4, and the straightening device 4 pulls and straightens the metal wire. Step S2: The straightened metal bar enters the spring forming device 6 through the spring cutting device 5, and the spring forming device 6 starts to coil the metal bar. Step S3: During the process of forming the first coil of the helical spring with the metal bar, the stamping mechanism 3 intermittently stamps the first coil of the spring until the first coil of the spring is formed and several spaced-apart fold angles are stamped thereon. Step S4: The spring pushing device 7 pushes the first coil of the spring outward to stretch the metal bar, and the spring forming device 6 continues to coil the metal bar. Step S5: When the coiling length of the metal bar reaches a preset value and the sliver can spring is formed, the spring cutting device 5 cuts off the metal wire. Step S6: Repeat the above steps S2 - S5.

[0042] Combined with the above structure and control method, the specific working principle of the coiling machine is as follows: After the metal wire S is straightened by the straightening device 4, it passes through the wire threading holes 571, 581 of the cutting knife 57 and the bottom knife 58 and the wire guiding hole 591 on the wire guiding seat 59 and is introduced above the fixed forming wheel 65 and abuts against the movable forming wheel 66. The metal wire S bends and moves downward in a coiling motion. At this time, the swing angle motion device 33 works to drive the rotating column 32 to rotate forward, so that the stamping and forming device 34 swings outward, enabling the bent metal wire S to fall into the spring pressing cavity B. Secondly, the stamping oil cylinder 344 works to drive the stamping and forming die 342 to move towards the stamping and forming bottom die 343, clamp and stamp the metal wire S, so that the metal wire S is stamped with a fold angle E1. After completing one fold angle E1, the stamping and forming die 342 and the stamping and forming bottom die 343 release the metal wire S. The swing angle motion device 33 works again to drive the rotating column 32 to rotate backward, so that the stamping and forming device 34 leaves the coiling path of the metal wire. After the metal wire S coils to a certain length, the above actions are repeated again to stamp out the next fold angle E1 until the metal wire S coils out the first coil of the spring and several evenly distributed fold angles E1 are stamped on the first coil.

[0043] Thereafter, the second driving device 73 operates to push the spring push rod 76 forward and push the first coil of the spring. Then, the spring forming device 6 continues to form coils, causing the wire to wind around the remaining part of the spring. During this process, the just-formed spring abuts against the front of the spring push rod 76, thereby forming a pitch for the spring. When the length of the spring meets the product specifications, the spring cutting device 5 cuts the wire, thus forming a sliver can spring.

[0044] The above is the preferred solution of the present invention, which shows and describes the basic principle, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of the present invention claimed is defined by the appended claims and their equivalents.

Claims

1. Cotton bale spring coiling machine, including a machine base (1), on which a coiling mechanism (2) for bending metal wires into springs is provided, characterized in that : A (3) is also provided on the machine base (1) on one side of the wire looping mechanism (2); the stamping mechanism (3) includes a mounting base (31), a rotating column (32) is connected to the mounting base (31), and a swing angle motion device (33) for controlling the axial swing of the rotating column (32) relative to the wire looping mechanism (2), and a stamping and forming device (34) for stamping the circumference of the spring when the spring is spirally formed is connected to the rotating column (32).

2. The sliver can spring coiling machine according to claim 1, wherein: The stamping mechanism (3) further includes a mounting frame (35), a transverse movement device (36) is arranged on the mounting frame (35), and the mounting base (31) is horizontally slidably connected to the mounting frame (35) through the transverse movement device (36); a lifting movement device (37) is arranged on the rotating column (32), and the stamping and forming device (34) is vertically slidably connected to the rotating column (32) through the lifting movement device (37).

3. The tampon barrel spring coiling machine according to claim 1, wherein: The stamping and forming device (34) includes a horizontally arranged stamping oil cylinder seat (341) and a stamping and forming die (342) slidably connected to the stamping oil cylinder seat (341). One end of the stamping oil cylinder seat (341) is fixedly connected with a stamping and forming bottom die (343). A spring pressing cavity (B) is formed between the stamping and forming bottom die (343) and the stamping and forming die (342). A stamping oil cylinder (344) is arranged at the other end of the stamping oil cylinder seat (341). The piston shaft of the stamping oil cylinder (344) is connected to the stamping and forming die (342) and drives the stamping and forming die (342) to reciprocate relative to the stamping and forming bottom die (343).

4. The sliver can spring coiling machine according to claim 3, characterized in that: A V-shaped concave forming groove (3421) is formed on one side of the stamping and forming die (342) corresponding to the stamping and forming bottom die (343), and a V-shaped convex forming block (3431) matching the V-shaped concave forming groove (3421) is arranged on the stamping and forming bottom die (343).

5. The tampon barrel spring looping machine according to claim 1, characterized in that: The swing angle motion device (33) includes a swing angle motor seat (331) and a swing plate (332). The swing angle motor seat (331) is fixedly connected to the mounting base (31) and connected with a swing angle motor (335). A swing angle eccentric wheel (336) is connected to the rotating shaft of the swing angle motor (335), and a first eccentric bearing (337) is arranged on the swing angle eccentric wheel (336); the swing plate (332) is fixedly connected to the rotating column (32) and is correspondingly provided with a swing angle chute (3321) slidably matched with the first eccentric bearing (337), and a support plate (338) for supporting the other end of the swing plate (332) is connected to the swing angle motor seat (331).

6. The sliver can spring coiling machine according to claim 1, characterized in that: The wire looping mechanism (2) includes a straightening device (4) for adjusting the wire arranged in sequence along the wire conveying direction, a spring cutting knife device (5) for cutting the wire, a spring forming device (6) for adjusting the spring diameter, and a spring pushing device (7) arranged below the spring forming device (6) and for adjusting the spring pitch.

7. The sliver can spring coiling machine according to claim 6, characterized in that: The spring forming device (6) includes a forming bottom plate (61). A forming connecting slide plate (62) and a first driving device (63) for controlling the forward and backward sliding of the forming connecting slide plate (62) are connected to the forming bottom plate (61). A bending box (64) is provided on the forming connecting slide plate (62). A fixed forming wheel (65), a movable forming wheel (66), and a forming motor (67) for controlling the angular motion of the movable forming wheel (66) around the outer circumference of the fixed forming wheel (65) are connected to the bending box (64).

8. The sliver can spring coiling machine according to claim 6, characterized in that: The spring pushing device (7) includes a pushing bottom plate (71). A pushing connecting slide plate (72) and a second driving device (73) for controlling the forward and backward sliding of the pushing connecting slide plate (72) are connected to the pushing bottom plate (71). A connecting rod (74) is installed on the pushing connecting slide plate (72) through a clamping cover. The end of the connecting rod (74) is adjustably connected to a spring push rod (76) through a chuck (75). The spring push rod (76) is placed between the spring forming device (6) and the stamping forming device (34), and reciprocates back and forth by driving of the second driving device (73).

9. The sliver can spring coiling machine according to claim 6, wherein: The spring cutting device (5) includes a cutting bottom plate (51). A tool box is fixedly arranged on the cutting bottom plate (51). A tool holder (52) and a cutting line motor (53) are arranged on the tool holder (52). One end of the tool holder (52) is rotatably hinged to the tool holder (52) through a rotating shaft (54), and a cutting line chute (521) is opened at the other end. A cutting line eccentric wheel (55) is connected to the rotating shaft of the cutting line motor (53). A second eccentric bearing (56) which is slidably matched with the cutting line chute (521) is arranged on the cutting line eccentric wheel (55). And a cutting tool (57) is arranged at one end of the tool holder (52) corresponding to the rotating shaft (54), and a bottom tool (58) corresponding to the cutting tool (57) is arranged on the tool holder (52).

10. A control method applied to the tampon barrel spring coiling machine described in the above claims 1-9, characterized in that: It includes the following steps: Step S1: Introduce the metal wire into the straightening device (4), and the straightening device (4) pulls and straightens the metal wire; Step S2: The straightened metal bar enters the spring forming device (6) through the spring cutting device (5), and the spring forming device (6) starts to form loops on the metal bar; Step S3: During the process of forming the first coil of the spiral spring with the metal bar, the stamping mechanism (3) performs intermittent stamping on the first coil of the spring until the first coil of the spring is formed and several spaced folding angles are stamped on it; Step S4: The spring pushing device (7) pushes the first coil of the spring to move outwards and stretches the metal bar, and the spring forming device (6) continues to form loops on the metal bar; Step S5: When the loop-forming length of the metal bar reaches a preset value and a cotton bale bucket spring is formed, the spring cutting device (5) cuts off the metal wire; Step S6: Repeat the above steps S2 - S5.

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