Multi-stage stretching device for welding tin wire production

Abstract

The invention discloses a multi-stage stretching device for welding tin wire production, and relates to the technical field of welding tin wire production, the multi-stage stretching device comprises a support frame, two vertically corresponding first-stage extrusion rollers are rotatably mounted on the support frame, a pair of rotating arms is rotatably mounted on a translation frame, and a second-stage compression roller is rotatably mounted on each rotating arm; a rotating shaft is rotationally installed on the supporting frame, and a winding roller used for winding tin wires is installed on the rotating shaft through a connecting assembly. According to the device, the tin wire is extruded through the two first-stage extrusion rollers, the tin wire is conveyed through the arranged winding roller, the tin wire is secondarily extruded and stretched when the second-stage compression roller moves towards the winding roller, the second-stage compression roller is separated from the tin wire when moving towards the first-stage extrusion rollers, and meanwhile the winding roller rotates in a stepping mode to wind the tin wire; the one-way section-by-section type stretching effect on the tin wire is achieved, and it is guaranteed that the tin wire is conveyed and wound while the tin wire is fully stretched and machined.

Description

Technical Field

[0001] The invention relates to the technical field of soldering tin wire production, in particular to a multi-stage stretching device for soldering tin wire production. Background Art

[0002] Solder wire, also known as solder wire, solder wire, tin wire, or tin wire, is composed of a tin alloy and an additive. The alloy composition is categorized as tin-lead or lead-free. The additive is evenly poured into the center of the tin alloy. Different types of solder wire require different additives. The additive improves heat conduction during the soldering process, removes oxidation, reduces surface tension of the materials being soldered, removes surface oil, and increases the soldering area. Solder wire is a tin alloy wire of a specific length and diameter. It can be used with a soldering iron or laser when soldering electronic components.

[0003] During the production and processing of tin wire, it is necessary to use a stretching device to stretch and shape the tin wire to obtain the required size. However, when the existing tin wire stretching device is used, it only squeezes the tin wire through two pressing rollers and cannot stretch the tin wire section by section. The tin wire stretching effect is poor. In view of the above technical defects of the prior art, a multi-stage stretching device for welding tin wire production is provided to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a multi-stage stretching device for producing solder wires to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A multi-stage stretching device for producing soldering tin wire comprises a support frame, on which two primary squeezing rollers corresponding to each other in a vertical direction are rotatably mounted, a tin wire for horizontal conveyance is clamped and mounted between the two primary squeezing rollers, a translation frame is slidably mounted on the support frame laterally, a motor is fixed on the support frame, a screw rod is coaxially fixed to the output shaft of the motor, a translation sleeve block fixed to the translation frame is threadedly sleeved on the screw rod, a pair of rotating arms are rotatably mounted on the translation frame, and a secondary pressing roller is rotatably mounted on each rotating arm, and the two secondary pressing rollers vertically press the tin wire. The tin wire passes through the translation frame, and the translation frame is equipped with a position switching assembly for driving the rotating arm to rotate. The support frame is rotatably equipped with a rotating shaft, and a winding roller for winding the tin wire is installed on the rotating shaft through a connecting assembly. The support frame is equipped with a rotation driving assembly for unidirectional rotation of the rotating shaft, and an adjustment plate sleeved on the tin wire is vertically slidably installed on the support frame. The support frame is rotatably equipped with a guide wheel that abuts the tin wire, and the support frame is equipped with a sliding assembly for driving the adjustment plate to slide back and forth relative to the support frame.

[0007] As an improved solution of the present invention: the position switching assembly includes a lifting frame vertically slidably mounted on the translation frame, a traction rod is hinged between the lifting frame and the rotating arm, a conduction block is fixed to the top of the lifting frame, and an upper wedge surface and a lower wedge surface are respectively provided at both ends of the conduction block, a fixed strip plate I corresponding to the upper wedge surface and a fixed strip plate II corresponding to the lower wedge surface are provided on the support frame, and a strip hole is provided on the lifting frame.

[0008] As an improved solution of the present invention: the position switching assembly also includes a guide column fixed to the bottom of the lifting frame, the guide column is slidably installed in the translation frame, and a spring ring is sleeved on the guide column, with both ends respectively fixed to the lifting frame and the translation frame, a trapezoidal block is slidably installed on the lifting frame, and two V-grooves are provided on the translation frame to engage with the trapezoidal block, and a connecting spring is fixed between the trapezoidal block and the lifting frame.

[0009] As an improved solution of the present invention: two vertically arranged threaded rods are rotatably installed on the translation frame, the two threaded rods are coaxially fixed and the threads rotate in opposite directions, and each of the threaded rods is threadedly sleeved with an L-shaped support plate that abuts the lower end of the guide column.

[0010] As an improved solution of the present invention: the rotation drive assembly includes a drive sleeve sleeved on the rotating shaft, a transmission gear II is fixedly sleeved on the drive sleeve, a transmission gear I is rotatably mounted on the support frame and is engaged with the transmission gear II, and a translation rack is fixed on the translation frame and is engaged with the transmission gear I.

[0011] As an improved solution of the present invention: the rotary drive assembly also includes a wedge block radially slidably mounted on the rotating shaft, a push spring is fixed between the wedge block and the rotating shaft, and the inner wall of the drive sleeve is provided with a plurality of wedge grooves for the wedge block to be inserted and adapted.

[0012] As an improved solution of the present invention: a friction pressure plate is installed on the support frame, and the friction pressure plate is in friction contact with the side wall of the rotating shaft.

[0013] As an improved solution of the present invention: the sliding assembly includes an extension column fixed coaxially with the rotating shaft, a driving bevel gear is fixedly sleeved on the extension column, a driven bevel gear is meshedly connected to the driving bevel gear, a turntable is coaxially fixed on the driven bevel gear, a connecting rod is eccentrically hinged on the turntable, and the end of the connecting rod away from the turntable is hinged to the adjustment plate.

[0014] As an improved solution of the present invention: the connecting assembly includes a connecting sleeve sleeved on the rotating shaft, the driving sleeve is fixedly sleeved on the connecting sleeve, and the side wall of the connecting sleeve is threadedly connected with a locking stud abutting the rotating shaft.

[0015] As an improved solution of the present invention: a roller frame is vertically slidably mounted on the support frame, a push roller vertically corresponding to the winding roller is rotatably mounted on the roller frame, and a support spring is fixed between the roller frame and the support frame.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention extrudes the tin wire through two primary extrusion rollers, conveys the tin wire through a winding roller, and the secondary pressure roller performs secondary extrusion and stretching on the tin wire when moving toward the winding roller. The secondary pressure roller separates from the tin wire when moving toward the primary extrusion roller, and the winding roller rotates step by step to wind the tin wire, thereby achieving a unidirectional and segmented stretching effect on the tin wire, ensuring that the tin wire is fully stretched while being conveyed and wound.

[0018] 2. The present invention can adjust the position of the adjustment plate through the sliding component, so that the winding roller can adjust the winding position of the stretched tin wire, so that the tin wire can be evenly wound on the winding roller, which greatly improves the winding quality of the tin wire. The winding roller can be removed from the rotating shaft through the connecting component, which greatly facilitates the acquisition of the formed tin wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention at a certain viewing angle;

[0020] Figure 2 It is a structural schematic diagram of the present invention from another perspective;

[0021] Figure 3 It is a schematic diagram of the local structure of the present invention;

[0022] Figure 4 This is a schematic diagram of the connection of the conductive block, lifting frame, guide column and trapezoidal block components in the present invention;

[0023] Figure 5 This is a schematic diagram of the connection of the rotating shaft, driving sleeve, extension column, driving bevel gear and driven bevel gear in the present invention;

[0024] Figure 6 For the present invention Figure 5 Exploded view of local structure;

[0025] Figure 7 For the present invention Figure 6 A magnified schematic diagram of part A in the middle;

[0026] Figure 8 This is a schematic diagram of the connection of the winding roller, connecting sleeve, locking stud and other components in the present invention.

[0027] In the figure: 1-support frame, 2-tin wire, 3-first-level squeezing roller, 4-translation frame, 5-secondary pressure roller, 6-conduction block, 7-rotating arm, 8-fixed strip I, 9-rotating shaft, 10-guide wheel, 11-adjusting plate, 12-pushing roller, 13-transmission gear I, 14-transmission gear II, 15-driving sleeve, 16-extension column, 17-driving bevel gear, 18-driven bevel gear, 19-translation rack, 20-fixed strip II, 21-turntable, 22-motor, 23 -screw, 24-translation sleeve, 25-roller frame, 26-support spring, 27-traction rod, 28-lifting frame, 29-V groove, 30-spring ring, 31-threaded rod, 32-L-shaped support plate, 33-upper wedge surface, 34-lower wedge surface, 35-trapezoidal block, 36-connecting spring, 37-wedge groove, 38-bar hole, 39-guide column, 40-thrust spring, 41-connecting rod, 42-wedge block, 43-connecting sleeve, 44-locking stud, 45-winding roller, 46-friction pressure plate. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments:

[0029] First embodiment

[0030] Please see the attached Figure 1 -Attached Figure 8A multi-stage stretching device for producing soldering tin wire includes a support frame 1, on which two primary squeezing rollers 3 corresponding to each other are rotatably mounted, and a horizontally transported tin wire 2 is clamped and mounted between the two primary squeezing rollers 3. A translation frame 4 is slidably mounted on the support frame 1, and a motor 22 is fixed on the support frame 1. A screw rod 23 is coaxially fixed to the output shaft of the motor 22. A translation sleeve 24 fixed to the translation frame 4 is threadedly sleeved on the screw rod 23. A pair of rotating arms 7 are rotatably mounted on the translation frame 4, and each rotating arm 7 is rotatably mounted with a secondary pressure roller 5. The two secondary pressure rollers 5 press the tin wire. The tin wire 2 passes through the translation frame 4, and the translation frame 4 is equipped with a position switching assembly for driving the rotating arm 7 to rotate. The support frame 1 is rotatably equipped with a rotating shaft 9, and the rotating shaft 9 is equipped with a winding roller 45 for winding the tin wire 2 through a connecting assembly. The support frame 1 is equipped with a rotation drive assembly for unidirectional rotation of the rotating shaft 9. The support frame 1 is vertically slidably equipped with an adjustment plate 11 sleeved on the tin wire 2. The support frame 1 is rotatably equipped with a guide wheel 10 that abuts against the tin wire 2. The support frame 1 is equipped with a sliding assembly for driving the adjustment plate 11 to slide back and forth relative to the support frame 1.

[0031] When the tin wire 2 is processed by the present device, the winding roller 45 is used to wind the tin wire 2 to realize the transportation of the tin wire 2, and the two primary squeezing rollers 3 are used to squeeze the tin wire 2 to realize the initial stretching and forming processing of the tin wire 2, and the rotating arm 7 drives the secondary pressing roller 5 to squeeze the tin wire 2 to realize the re-stretching processing of the tin wire 2.

[0032] The position switching assembly of this device includes a lifting frame 28 that slides vertically on the translation frame 4. A traction rod 27 is hingedly connected between the lifting frame 28 and the rotating arm 7. A conductive block 6 is fixed to the top of the lifting frame 28. The ends of the conductive block 6 are respectively defined by an upper wedge surface 33 and a lower wedge surface 34. The support frame 1 is provided with a fixed strip I8 corresponding to the upper wedge surface 33 and a fixed strip II20 corresponding to the lower wedge surface 34. The lifting frame 28 is provided with a strip hole 38. The motor 22 drives the screw rod 23 to rotate, which drives the translation sleeve 24 to slide horizontally, so that the translation sleeve 24 drives the translation frame 4 to slide. At this time, the secondary pressure roller 5 moves linearly to squeeze and stretch the tin wire 2.

[0033] The position switching assembly also includes a guide column 39 fixed to the bottom of the lifting frame 28, and the guide column 39 is slidably installed in the translation frame 4. A spring ring 30 is sleeved on the guide column 39, and its two ends are respectively fixed to the lifting frame 28 and the translation frame 4. A trapezoidal block 35 is slidably installed on the lifting frame 28, and two V-grooves 29 are provided on the translation frame 4 to engage with the trapezoidal block 35. A connecting spring 36 is fixed between the trapezoidal block 35 and the lifting frame 28.

[0034] Through the above arrangement, when the translation frame 4 moves toward the primary extrusion roller 3, the upper wedge surface 33 on the conduction block 6 moves to abut against the fixed strip I8. At this time, the conduction block 6 drives the lifting frame 28 to move downward, and the lifting frame 28 drives the rotating arm 7 to rotate through the traction rod 27, thereby realizing the two secondary pressure rollers 5 to squeeze the tin wire 2. Then the motor 22 is controlled to drive the screw rod 23 to rotate in the opposite direction, and the translation frame 4 moves toward the winding roller 45. The secondary pressure roller 5 stretches the tin wire 2. When the lower wedge surface 34 on the conduction block 6 slides to abut against the fixed strip II20, the conduction block 6 moves up to be reset. At this time, the secondary pressure roller 5 is separated from the tin wire 2. This is repeated, thereby realizing the secondary pressure roller 5 stretching the tin wire 2 toward the winding roller 45. By stretching the tin wire 2 unidirectionally and segment by segment, the degree of stretching processing of the tin wire 2 is greatly improved.

[0035] When the lifting frame 28 slides vertically relative to the translation frame 4, the elastic deformation of the spring ring 30 is conducive to the smooth resetting of the secondary pressure roller 5. During the vertical movement of the lifting frame 28, the trapezoidal block 35 is engaged in the corresponding V-groove 29, which plays a timely positioning effect on the secondary pressure roller 5 after the position adjustment, thereby ensuring the stability of the secondary pressure roller 5 in the process of stretching the tin wire 2.

[0036] In addition, two vertically mounted threaded rods 31 are rotatably mounted on the translation frame 4 of the present device. The two threaded rods 31 are coaxially fixed and have opposite thread rotation directions. Each threaded rod 31 is threadedly sleeved with an L-shaped support plate 32 that abuts the lower end of the guide post 39. By turning the threaded rod 31, the L-shaped support plate 32 is driven to move vertically, thereby adjusting the squeezing force of the secondary pressure roller 5 on the tin wire 2, allowing for flexible adjustment based on the required stretching of the tin wire 2.

[0037] Second embodiment

[0038] Please see the attached Figure 1 -Attached Figure 8 In addition to the first embodiment, the present device further comprises a rotational drive assembly comprising a drive sleeve 15 sleeved on the rotating shaft 9, a transmission gear II 14 fixedly sleeved on the drive sleeve 15, a transmission gear I 13 rotatably mounted on the support frame 1 and meshing with the transmission gear II 14, and a translation rack 19 fixed on the translation frame 4 and meshing with the transmission gear I 13. The rotational drive assembly further comprises a wedge 42 radially slidably mounted on the rotating shaft 9, a push spring 40 fixed between the wedge 42 and the rotating shaft 9, and a plurality of wedge slots 37 formed on the inner wall of the drive sleeve 15 for insertion and engagement of the wedges 42.

[0039] Through the above arrangement, after the conduction block 6 slides to abut against the fixed strip plate II20, the fixed strip plate II20 is inserted into the strip hole 38, and then the translation frame 4 continues to move. When the translation rack 19 is meshed and connected with the transmission gear I13, the transmission gear I13 rotates and drives the transmission gear II14 to rotate. At this time, the transmission gear II14 drives the driving sleeve 15 to rotate, and the driving sleeve 15 drives the rotating shaft 9 to rotate through the wedge block 42, thereby realizing that the rotating shaft 9 drives the winding roller 45 to rotate through the connecting assembly, thereby realizing the winding of the stretched tin wire 2. In the above-mentioned winding process of the tin wire 2, the secondary pressure roller 5 does not contact the tin wire 2, and the stretching and winding actions do not interfere with each other, ensuring that the stretching and winding actions of the tin wire 2 are carried out in sequence and continuously, thereby effectively improving the winding effect of the tin wire 2.

[0040] In addition, a friction pressure plate 46 is installed on the support frame 1, and the friction pressure plate 46 is in frictional contact with the side wall of the rotating shaft 9. Due to the friction between the friction pressure plate 46 and the rotating shaft 9, when the driving sleeve 15 rotates in the opposite direction relative to the rotating shaft 9, the force of the driving sleeve 15 on the wedge block 42 is not sufficient to overcome the friction between the friction pressure plate 46 and the rotating shaft 9, which effectively avoids the rotating shaft 9 from reversing when the translation rack 19 slides in the opposite direction. The friction pressure plate 46 is used to provide damping when the winding roller 45 stops rotating, preventing the tin wire from loosening, and ensuring the stable winding of the tin wire 2 by the winding roller 45.

[0041] In addition, the sliding assembly of the present device includes an extension column 16 fixed coaxially with the rotating shaft 9, a driving bevel gear 17 is fixedly sleeved on the extension column 16, a driven bevel gear 18 is meshedly connected to the driving bevel gear 17, a turntable 21 is coaxially fixed to the driven bevel gear 18, a connecting rod 41 is eccentrically hinged on the turntable 21, and the end of the connecting rod 41 away from the turntable 21 is hinged to the adjustment plate 11.

[0042] Based on the above structural arrangement, when the rotating shaft 9 rotates, the rotating shaft 9 drives the extension column 16 to rotate, the extension column 16 drives the active bevel gear 17 to rotate, the active bevel gear 17 drives the driven bevel gear 18 meshing therewith to rotate, and the driven bevel gear 18 drives the turntable 21 to rotate. The turntable 21 pulls the adjustment plate 11 through the connecting rod 41, thereby realizing automatic adjustment of the winding position of the tin wire 2 relative to the winding roller 45, so that the stretched tin wire 2 can be evenly wound on the winding roller 45.

[0043] The connecting assembly of the present device includes a connecting sleeve 43 sleeved on the rotating shaft 9, and the driving sleeve 15 is fixedly sleeved on the connecting sleeve 43. The side wall of the connecting sleeve 43 is threadedly connected with a locking stud 44 abutting against the rotating shaft 9. By screwing the locking stud 44 to separate it from the rotating shaft 9, the connecting sleeve 43 is slid off the rotating shaft 9, and the winding roller 45 with the tin wire 2 wound thereon can be obtained, which greatly facilitates the acquisition of the stretched tin wire 2.

[0044] In addition, a roller frame 25 is vertically slidably mounted on the support frame 1, and a push roller 12 is rotatably mounted on the roller frame 25, vertically corresponding to the winding roller 45. A support spring 26 is fixed between the roller frame 25 and the support frame 1. The support spring 26 can support the roller frame 25, so that the push roller 12 can apply a certain push force to the tin wire 2 wound on the winding roller 45, ensuring that the tin wire 2 can be wound more tightly on the winding roller 45, effectively improving the winding and collection effect of the tin wire 2.

[0045] In summary, the present invention squeezes the tin wire 2 through two primary squeezing rollers 3, conveys the tin wire 2 through the provided winding roller 45, and the secondary squeezing roller 5 performs secondary squeezing and stretching on the tin wire 2 when moving toward the winding roller 45. The secondary squeezing roller 5 separates from the tin wire 2 when moving toward the primary squeezing roller 3, and the winding roller 45 rotates step by step to wind the tin wire 2, thereby achieving a unidirectional and segmented stretching effect on the tin wire 2, ensuring that the tin wire 2 is fully stretched and processed while achieving the conveying and winding of the tin wire 2. The present invention can adjust the position of the adjustment plate 11 through the sliding component, so that the winding roller 45 can adjust the winding position of the stretched tin wire 2, so that the tin wire 2 can be evenly wound on the winding roller 45, greatly improving the winding quality of the tin wire 2, and the winding roller 45 can be disassembled from the rotating shaft 9 through the connecting component, which greatly facilitates the acquisition of the formed tin wire 2. The winding roller can be disassembled from the rotating shaft through the connecting component, which greatly facilitates the acquisition of the formed tin wire.

Claims

1. A multi-stage stretching device for producing soldering tin wire, comprising a support frame (1), on which two vertically corresponding primary squeezing rollers (3) are rotatably mounted, and a horizontally transported tin wire (2) is clamped and mounted between the two primary squeezing rollers (3), characterized in that: A translation frame (4) is installed on the support frame (1) in a transverse sliding manner. A motor (22) is fixed on the support frame (1). A screw rod (23) is coaxially fixed to the output shaft of the motor (22). A translation sleeve (24) fixed to the translation frame (4) is threadedly sleeved on the screw rod (23). A pair of rotating arms (7) are rotatably installed on the translation frame (4). Each of the rotating arms (7) is rotatably installed with a secondary pressure roller (5). The two secondary pressure rollers (5) vertically press the tin wire. The tin wire (2) passes through the translation frame (4). The translation frame (4) is equipped with a driving mechanism for driving the rotating arm (7). A rotating position switching assembly, wherein a rotating shaft (9) is rotatably mounted on the support frame (1), a winding roller (45) for winding the tin wire (2) is mounted on the rotating shaft (9) through a connecting assembly, a rotating drive assembly for unidirectionally rotating the rotating shaft (9) is mounted on the support frame (1), an adjusting plate (11) sleeved on the tin wire (2) is vertically slidably mounted on the support frame (1), a guide wheel (10) abutting against the tin wire (2) is rotatably mounted on the support frame (1), and a sliding assembly for driving the adjusting plate (11) to slide back and forth relative to the support frame (1) is mounted on the support frame (1).

2. A multi-stage stretching device for solder wire production according to claim 1, characterized in that: The position switching assembly includes a lifting frame (28) vertically slidably mounted on the translation frame (4), a traction rod (27) is hinged between the lifting frame (28) and the rotating arm (7), a conduction block (6) is fixed on the top of the lifting frame (28), and an upper wedge surface (33) and a lower wedge surface (34) are respectively provided at both ends of the conduction block (6), a fixed strip plate I (8) corresponding to the upper wedge surface (33) and a fixed strip plate II (20) corresponding to the lower wedge surface (34) are provided on the support frame (1), and a strip hole (38) is provided on the lifting frame (28).

3. The multi-stage stretching device for solder wire production according to claim 2, characterized in that: The position switching assembly further comprises a guide post (39) fixed to the bottom of the lifting frame (28), the guide post (39) being slidably mounted in the translation frame (4), a spring ring (30) being sleeved on the guide post (39) with both ends respectively fixed to the lifting frame (28) and the translation frame (4), a trapezoidal block (35) being slidably mounted on the lifting frame (28), two V-grooves (29) being provided on the translation frame (4) for engaging with the trapezoidal block (35), and a connecting spring (36) being fixed between the trapezoidal block (35) and the lifting frame (28).

4. The multi-stage stretching device for solder wire production according to claim 3, characterized in that: Two vertically arranged threaded rods (31) are rotatably mounted on the translation frame (4). The two threaded rods (31) are coaxially fixed and have opposite thread rotation directions. An L-shaped support plate (32) is threadedly sleeved on each threaded rod (31) and abuts against the lower end of the guide column (39).

5. The multi-stage stretching device for solder wire production according to claim 1, characterized in that: The rotary drive assembly comprises a drive sleeve (15) sleeved on the rotating shaft (9), a transmission gear II (14) fixedly sleeved on the drive sleeve (15), a transmission gear I (13) meshing with the transmission gear II (14) rotatably mounted on the support frame (1), and a translation rack (19) meshing with the transmission gear I (13) fixed on the translation frame (4).

6. The multi-stage stretching device for solder wire production according to claim 5, characterized in that: The rotary drive assembly further comprises a wedge block (42) radially slidably mounted on the rotating shaft (9), a push spring (40) being fixed between the wedge block (42) and the rotating shaft (9), and a plurality of wedge grooves (37) for the wedge block (42) to be plugged and adapted are provided on the inner wall of the drive sleeve (15).

7. The multi-stage stretching device for solder wire production according to claim 5, characterized in that: A friction pressure plate (46) is mounted on the support frame (1), and the friction pressure plate (46) is in frictional contact with the side wall of the rotating shaft (9).

8. The multi-stage stretching device for solder wire production according to claim 1, characterized in that: The sliding assembly comprises an extension column (16) fixed coaxially with the rotating shaft (9), a driving bevel gear (17) is fixedly sleeved on the extension column (16), a driven bevel gear (18) is meshedly connected to the driving bevel gear (17), a rotating disk (21) is coaxially fixed on the driven bevel gear (18), a connecting rod (41) is eccentrically hinged on the rotating disk (21), and one end of the connecting rod (41) away from the rotating disk (21) is hinged on the adjusting plate (11).

9. The multi-stage stretching device for solder wire production according to claim 1, characterized in that: The connecting assembly comprises a connecting sleeve (43) sleeved on the rotating shaft (9), the driving sleeve (15) is fixedly sleeved on the connecting sleeve (43), and the side wall of the connecting sleeve (43) is threadedly connected with a locking stud (44) abutting against the rotating shaft (9).

10. A multi-stage stretching device for solder wire production according to any one of claims 1 to 9, characterized in that: A roller frame (25) is vertically slidably mounted on the support frame (1), a push roller (12) vertically corresponding to the winding roller (45) is rotatably mounted on the roller frame (25), and a support spring (26) is fixed between the roller frame (25) and the support frame (1).

Images