Knitted fabric heat-setting machine

Abstract

The invention discloses a knitted fabric heat-setting machine which comprises a rack, an unwinding device, a winding device, a steam humidifying assembly, a drying assembly and a fabric flattening device, the unwinding device and the winding device are arranged on the two sides of the rack, a partition plate is arranged in the rack, and an inner cavity of the rack is divided into a humidifying cavity and a drying cavity by the partition plate; the steam humidifying assemblies and the drying assemblies are located in the humidifying cavity and the drying cavity correspondingly, the number of the steam humidifying assemblies is two, and the two steam humidifying assemblies and the two drying assemblies are located on the upper side and the lower side of the knitted fabric. The first needling rod and the second needling rod apply tension to knitted fabric conveyed in the rack to straighten and flatten the knitted fabric, then the knitted fabric is dried and shaped through the drying assembly, wrinkles of the knitted fabric can be eliminated, and meanwhile the size of the shaped knitted fabric can be more stable.

Description

Technical Field

[0001] This invention discloses a heat setting machine for knitted fabrics, belonging to the technical field of knitted fabric production and processing equipment. Background Technology

[0002] A setting machine is a machine used for setting fabric in industrial manufacturing. Fabric setting machines are mainly used for setting woven fabrics. They typically use heat-conducting oil to heat the air inside the machine, which then heats the fabric. Once the fabric reaches a certain temperature and is held for a certain time, its structure changes, achieving the setting purpose. In existing setting machines, the fabric is directly unwound and passed through the inside of the machine. While the unwound fabric is kept relatively flat in the conveying direction by adjusting the tension, the lack of tension in the width direction results in wrinkles in some areas that cannot be eliminated after setting. Furthermore, the large overhang of the fabric in the conveying direction means that areas near the tension support points experience greater tension, while areas further away experience less. This is especially pronounced after the fabric is humidified, increasing its weight and causing inconsistent elastic recovery in different areas after setting, thus affecting the setting effect and dimensional stability of the fabric. Summary of the Invention

[0003] The purpose of this invention is to solve the problems in the prior art and to provide a heat setting machine for knitted fabrics.

[0004] This invention achieves the above-mentioned objectives through the following technical solution: a heat setting machine for knitted fabrics, comprising a frame, an unwinding device, a winding device, a steam humidification component, a drying component, and a fabric flattening device. The unwinding device and the winding device are disposed on both sides of the frame. A partition is provided inside the frame, dividing the inner cavity of the frame into a humidification chamber and a drying chamber. The steam humidification component and the drying component are respectively located in the humidification chamber and the drying chamber, and two of each component are provided, located on the upper and lower sides of the knitted fabric. The fabric flattening device is disposed inside the drying chamber. The fabric flattening device includes a conveying assembly and a needle-punching fixing assembly. Multiple needle-punching fixing assemblies are installed at equal intervals on the conveying assembly. The conveying assembly is mounted on a frame. The speed at which the conveying assembly drives the needle-punching fixing assemblies is equal to the conveying speed of the winding device for winding the knitted fabric. Each needle-punching fixing assembly includes a first needle-punching rod, a second needle-punching rod, a movable plate, a fixed plate, a first drive assembly, and a second drive assembly. The fixed plate is mounted on the conveying assembly, and the movable plate is mounted on the fixed plate via the first drive assembly. The first needle-punching rod is... There are two needle rods, and both the first and second needle rods are slidably mounted on the movable plate. The frame has drive plates on both sides corresponding to the conveying assembly. When the first drive assembly contacts the drive plate, it controls the height of the first and second needle rods. When the second drive assembly contacts the drive plate, it controls the horizontal position of the first and second needle rods on the movable plate. Guide rollers are provided on both sides of the frame. The two guide rollers are used to keep the knitted fabric conveyed horizontally within the frame. The first drive assembly includes a pressing rod, a first limiting bolt, and a first spring. There are two pressing rods, each fixed to one side of the fixed plate. The first limiting bolt passes through the fixed plate and is fixedly connected to the movable plate. The first spring is sleeved on the outside of the first limiting bolt and applies a force to the movable plate away from the fixed plate. The drive plate has a first protrusion and a second protrusion that contacts the pressing rods. The first protrusion includes a first wedge-shaped surface, a first horizontal surface, and a first vertical surface. The first horizontal surface connects the first wedge-shaped surface and the first vertical surface. The second protrusion includes a second wedge-shaped surface and a second horizontal surface.

[0005] Preferably, two pressure rollers are provided between the two drive plates, the two pressure rollers are located on both sides of the first vertical plane, and the lowest point of the pressure rollers is in contact with the knitted fabric, and the pressure rollers have annular grooves to avoid the first needle bar and the second needle bar.

[0006] Preferably, two sets of the second driving components are provided, and the two sets are mirror images of each other. The second driving component includes a first sliding block, a second limiting bolt, a second spring, a driving block, and a reset component. The second limiting bolt passes through the first sliding block and is fixedly connected to the movable plate. The second spring is sleeved on the second limiting bolt and applies a force close to the movable plate to the second sliding block. The driving block is slidably disposed on the movable plate, and the sliding direction of the driving block and the first sliding block is perpendicular. The driving block and the first sliding block have mutually cooperating third wedge-shaped surfaces. The movable plate is provided with a first groove for the first needle rod to slide, and the first sliding block is provided with a second groove for the first needle rod to slide. The projections of the first groove and the second groove on the horizontal plane intersect. The end of the driving block away from the first sliding block has a driving part. The driving plate is provided with a third protrusion, which includes a fourth wedge-shaped surface, a second vertical surface, and a fifth wedge-shaped surface. The second vertical surface connects the fourth wedge-shaped surface and the fifth wedge-shaped surface. The two first grooves are arranged in a figure-eight shape.

[0007] Preferably, the reset component includes a third limiting bolt, a third spring, and a pressure block. The pressure block is fixedly connected to the movable plate by a bolt. The driving block is slidably disposed with the pressure block, and a protruding ridge is provided in the middle of the driving block. One end of the third limiting bolt passes through the pressure block and is fixedly connected to the protruding ridge. The third spring is sleeved on the outside of the third limiting bolt, and both ends of the third spring abut against the pressure block and the protruding ridge, respectively.

[0008] Preferably, the second drive assembly further includes a connecting plate, a second sliding block, a fourth limiting bolt, and a fourth spring. The fourth limiting bolt passes through the connecting plate and is fixedly connected to the movable plate. The fourth spring is sleeved on the outside of the fourth limiting bolt and applies a force close to the movable plate to the connecting plate. Both ends of the connecting plate have lugs that cooperate with one end of the first sliding block. The movable plate is also provided with a third sliding groove for the second needle rod to slide. The second sliding block is fixedly connected to the connecting plate. One end of the second needle rod is mounted on the second sliding block, and the sliding direction of the second needle rod is parallel to the conveying direction of the knitted fabric.

[0009] Preferably, the conveying component is a chain conveyor or a belt conveyor.

[0010] Compared with the prior art, the beneficial effects of the present invention are: By setting up a steam humidification component, a fabric flattening device, and a drying component, the steam humidification component humidifies the fabric, and the fabric flattening device straightens and flattens the knitted fabric, so that the knitted fabric is in a flat state in both the conveying direction and the width direction. Then, the drying component dries and shapes it, which can effectively eliminate wrinkles on the knitted fabric and make the dimensional stability of the knitted fabric after shaping more stable.

[0011] By setting up a conveying component and a needle-punching fixing component, the needle-punching fixing component has multiple components and can segmentally straighten and flatten the knitted fabric between the two guide rollers after unwinding. This ensures that each segment is in a uniformly straightened state, and the tension on the fabric remains basically consistent without significant variation. This avoids overstretching in local areas, thereby eliminating wrinkles on the knitted fabric and ensuring the dimensional stability of each segment, resulting in a better shaping effect. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a heat setting machine for knitted fabrics according to the present invention; Figure 2 for Figure 1 A magnified view of a section at point A in the middle; Figure 3 This is a schematic diagram of the fabric flattening device and drive plate in this invention; Figure 4 This is a schematic diagram of the structure of the needle fixing component and the drive plate in this invention; Figure 5 for Figure 4 A magnified view of a section at point B in the middle; Figure 6 This is a schematic diagram of the acupuncture fixation component in this invention; Figure 7 This is a schematic diagram of the structure of the driving block, the first sliding block, and the reset component in this invention; Figure 8 This is a partial structural diagram of the second needle rod, the connecting plate, and the second sliding block in this invention; Reference numerals: 1. Unwinding device; 2. Partition plate; 3. Drying assembly; 4. Drive plate; 5. Rewinding device; 6. Steam humidification assembly; 7. Frame; 8. Humidification chamber; 9. Drying chamber; 10. Needle-punching fixing assembly; 11. Conveying assembly; 12. Guide roller; 13. Movable plate; 14. Second needle-punching rod; 15. First drive assembly; 16. Fixing plate; 17. Pressure roller; 18. Second drive assembly; 19. First limiting bolt; 20. First spring; 21. Connecting plate; 22. First sliding block; 23. First protrusion; 24. Fourth wedge-shaped surface; 25. Drive block; 26. Second vertical surface; 27. Fifth... 28. Wedge-shaped surface; 29. ​​Second wedge-shaped surface; 30. Second horizontal surface; 31. Second protrusion; 32. First horizontal surface; 33. First vertical surface; 34. Third protrusion; 35. Reset component; 36. First slide groove; 37. First needle rod; 38. Third slide groove; 39. Pressing rod; 40. Second spring; 41. Second limiting bolt; 42. Fourth spring; 43. Fourth limiting bolt; 44. Second slide groove; 45. Third wedge-shaped surface; 46. Third limiting bolt; 47. Pressure block; 48. Third spring; 49. Protruding ridge; 50. Driving part; 51. Lug; 52. Second sliding block. Detailed Implementation

[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0014] like Figures 1-8As shown, a heat setting machine for knitted fabric includes a frame 7, an unwinding device 1, a winding device 5, a steam humidification assembly 6, a drying assembly 3, and a fabric flattening device. The unwinding device 1 and the winding device 5 are located on both sides of the frame 7. A partition 2 is provided inside the frame 7, dividing the inner cavity of the frame 7 into a humidification chamber 8 and a drying chamber 9. The steam humidification assembly 6 and the drying assembly 3 are located in the humidification chamber 8 and the drying chamber 9, respectively, and two of each are provided, located on the upper and lower sides of the knitted fabric. The fabric flattening device is located in the drying chamber 9 and includes a conveying assembly 11 and a needle-punching fixing assembly 10. Multiple needle-punching fixing assemblies 10 are provided and installed on the conveying assembly 11 at equal intervals. The conveying assembly 11 is mounted on the frame 7, and the movement speed of the needle-punching fixing assemblies 10 driven by the conveying assembly 11 is equal to the conveying speed of the winding device 5 when winding the knitted fabric. The conveying assembly 11 is a chain. The conveyor or belt conveyor, the needle-punching fixing assembly 10 includes a first needle-punching rod 37, a second needle-punching rod 14, a movable plate 13, a fixed plate 16, a first drive assembly 15 and a second drive assembly 18. The fixed plate 16 is mounted on the conveyor assembly 11, and the movable plate 13 is mounted on the fixed plate 16 via the first drive assembly 15. There are two first needle-punching rods 37, and both the first needle-punching rod 37 and the second needle-punching rod 14 are slidably mounted on the movable plate 13. The frame 7 is provided with drive plates 4 on both sides corresponding to the conveyor assembly 11. When the first drive assembly 15 abuts against the drive plate 4, it is used to control the height of the first needle-punching rod 37 and the second needle-punching rod 14. When the second drive assembly 18 abuts against the drive plate 4, it is used to control the horizontal position of the first needle-punching rod 37 and the second needle-punching rod 14 on the movable plate 13. Guide rollers 12 are provided on both sides of the frame 7. The two guide rollers 12 are used to keep the knitted fabric conveyed horizontally within the frame 7.

[0015] The first drive assembly 15 includes a pressing rod 39, a first limiting bolt 19, and a first spring 20. Two pressing rods 39 are provided and fixed to both sides of the fixed plate 16. The first limiting bolt 19 passes through the fixed plate 16 and is fixedly connected to the movable plate 13. The first spring 20 is sleeved on the outside of the first limiting bolt 19 and applies a force to the movable plate 13 away from the fixed plate 16. The drive plate 4 has a first protrusion 23 and a second protrusion 30 that abut against the pressing rod 39. The first protrusion 23 includes a first wedge-shaped surface 31, a first horizontal surface 32, and a first vertical surface 33. The first horizontal surface 32 connects to the first wedge-shaped surface 31. 1. The first vertical surface 33 and the second protrusion 30 include a second wedge-shaped surface 28 and a second horizontal surface 29. When the pressing rod 39 passes through the first protrusion 23 and the second protrusion 30, the first wedge-shaped surface 31 and the second wedge-shaped surface 28 will apply pressure to the pressing rod 39, causing the movable plate 13 to move towards the fixed plate 16, thereby compressing the first spring 20 to achieve the effect of storing force. When the pressing rod 39 slides past the first vertical surface 33, the movable plate 13 will quickly return to its original position under the action of the first spring 20, so that the first needle bar 37 and the second needle bar 14 pierce the knitted fabric upwards, thereby preparing for the subsequent straightening and flattening of the knitted fabric.

[0016] Two pressure rollers 17 are disposed between the two drive plates 4. The two pressure rollers 17 are located on both sides of the first vertical surface 33, and the lowest point of the pressure rollers 17 is in contact with the knitted fabric. The pressure rollers 17 have annular grooves to avoid the first needle bar 37 and the second needle bar 14. Figure 2 As shown, the two pressure rollers 17 are fixedly mounted on the frame 7 by a bracket. The process of the first needle-punching rod 37 and the second needle-punching rod 14 piercing the knitted fabric is as follows: When the needle-punching fixing assembly 10 rotates from the X point position to the Y point position with the conveying assembly 11, the pressure rod 39 first abuts against the first wedge-shaped surface 31 on the first protrusion 23, so that when the pressure rod 39 is under pressure, it drives the movable plate 13, the first needle-punching rod 37 and the second needle-punching rod 14 to move downward synchronously in the short time of the movement of the conveying assembly 11, while the first spring 20 begins to store force. During this process, the first needle-punching rod 37 and the second needle-punching rod 14 do not contact the knitted fabric. When the pressure rod 39 moves to the first vertical surface 33, that is, the Z point position, the pressure on the pressure rod 39 disappears instantly, so that the first spring 20 drives the movable plate 13, the first needle-punching rod 37 and the second needle-punching rod 14 to move upward, and between the two pressure rollers 17, the first needle-punching rod 37 and the second needle-punching rod 14 pierce the knitted fabric.

[0017] Two sets of second drive components 18 are provided, and the two sets are arranged in a mirror image. The second drive component 18 includes a first sliding block 22, a second limiting bolt 41, a second spring 40, a drive block 25, and a reset component 35. The second limiting bolt 41 passes through the first sliding block 22 and is fixedly connected to the movable plate 13. The second spring 40 is sleeved on the second limiting bolt 41, and the second spring 40 applies a force close to the movable plate 13 to the second sliding block 52. The drive block 25 is slidably disposed on the movable plate 13, and the drive block 25 is parallel to the first sliding block 22. The sliding block 22 is vertically oriented, and the driving block 25 and the first sliding block 22 have mutually cooperating third wedge-shaped surfaces 45. The movable plate 13 is provided with a first groove 36 for the first needle rod 37 to slide, and the first sliding block 22 is provided with a second groove 44 for the first needle rod 37 to slide. The projections of the first groove 36 and the second groove 44 on the horizontal plane intersect. The end of the driving block 25 away from the first sliding block 22 has a driving part 50, and the driving plate 4 is provided with a third protrusion 34. The three protrusions 34 include a fourth wedge-shaped surface 24, a second vertical surface 26, and a fifth wedge-shaped surface 27. The second vertical surface 26 connects the fourth wedge-shaped surface 24 and the fifth wedge-shaped surface 27. The two first sliding grooves 36 are arranged in a V-shape. After the first needle-punching rod 37 and the second needle-punching rod 14 puncture the fabric, the driving part 50 on the driving block 25 abuts against the fourth wedge-shaped surface 24 on the third protrusion 34, causing the two driving blocks 25 to move towards each other. In this way, the first sliding block 22 is driven by the action of the third wedge-shaped surface 45. The first needle rod 37 moves along the first groove 36 on the movable plate 13. At the same time, the first needle rod 37 also slides in the second groove 44 on the first sliding block 22. This ensures that the two first needle rods 37 can smoothly straighten and flatten the knitted fabric. When the drive part 50 slides to the position of the fifth wedge surface 27, the reset part 35 drives the drive part 50 to reset. At the same time, the second spring 40 drives the first sliding block 22 and the first needle rod 37 to reset. In this way, the first needle rod 37 can relieve the force on the straightened knitted fabric.

[0018] The reset component 35 includes a third limiting bolt 46, a third spring 48, and a pressure block 47. The pressure block 47 is fixedly connected to the movable plate 13 by bolts. The drive block 25 is slidably disposed with the pressure block 47, and a protruding ridge 49 is provided in the middle of the drive block 25. One end of the third limiting bolt 46 passes through the pressure block 47 and is fixedly connected to the protruding ridge 49. The third spring 48 is sleeved on the outside of the third limiting bolt 46, and both ends of the third spring 48 abut against the pressure block 47 and the protruding ridge 49, respectively. When the drive part 50 of the drive block 25 abuts against the fourth wedge surface 24 or the fifth wedge surface 27, the drive block 25 slides and compresses the third spring 48. When the pressure on the drive block 25 disappears, the third spring 48 can drive the drive block 25 to reset, thereby allowing the second spring 40 to drive the first sliding block 22 and the first needle rod 37 to reset.

[0019] The second drive assembly 18 also includes a connecting plate 21, a second sliding block 52, a fourth limiting bolt 43, and a fourth spring 42. The fourth limiting bolt 43 passes through the connecting plate 21 and is fixedly connected to the movable plate 13. The fourth spring 42 is sleeved on the outside of the fourth limiting bolt 43, and the fourth spring 42 applies a force to the connecting plate 21 close to the movable plate 13. Both ends of the connecting plate 21 have lugs 51 that cooperate with one end of the first sliding block 22. The movable plate 13 is also provided with a third sliding groove 38 for the second needle rod 14 to slide. The second sliding block 52 is fixedly connected to the connecting plate 21. One end of the second needle rod 14 is installed on the second sliding block 52, and the sliding direction of the second needle rod 14 is parallel to the conveying direction of the knitted fabric. When the driving block 25 drives the first sliding block 22 and the first needle rod 37 to move and straighten the knitted fabric, the two first sliding blocks 22 can drive the connecting plate 21 and the second sliding block 52 to move synchronously by means of the lugs 51. This allows the second needle rod 14 to slide along the third slide groove 38 and straighten the middle part of the knitted fabric.

[0020] Working principle: After the knitted fabric is unwound by the unwinding device 1, it is conveyed horizontally inside the frame 7 by the two guide rollers 12. The conveying assembly 11 drives the needle-punching fixing assembly 10 to circulate. The moving speed of the needle-punching fixing assembly 10 is consistent with the conveying speed of the knitted fabric. When the needle-punching fixing assembly 10 rotates from below to above the conveying assembly 11, the pressing rod 39 on the movable plate 13 slides along the first protrusion 23, causing the first spring 20 to change from the stored state to the reset state. In this way, the first needle-punching rod 37 and the second needle-punching rod 14 move downward first, and then upward to pierce the knitted fabric. Then, when the driving block 25 passes the third protrusion 34, the driving block 25 is subjected to pressure and relies on the first The three-wedge-shaped surface 45 drives the first needle bar 37 to slide within the first groove 36, so that the first needle bar 37 at two positions on both sides of the knitted fabric generates two inclined pulling forces on the knitted fabric, thereby straightening the fabric. The second needle bar 14 straightens the knitted fabric in the opposite direction of the fabric transport. The distances that the first needle bar 37 and the second needle bar 14 move in the opposite direction of the fabric transport are equal, which can eliminate wrinkles on the knitted fabric. While keeping the knitted fabric in this state, the drying assembly 3 dries and shapes the knitted fabric. After shaping, the pressure bar 39 continues to pass through the second protrusion 30, causing the first needle bar 37 and the second needle bar 14 to disengage from the knitted fabric. Then, the winding device 5 winds up the knitted fabric.

[0021] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0022] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat setting machine for knitted fabrics, comprising a frame (7), an unwinding device (1), a winding device (5), a steam humidification assembly (6), a drying assembly (3), and a fabric flattening device, characterized in that, The unwinding device (1) and the winding device (5) are located on both sides of the frame (7). A partition (2) is provided inside the frame (7), which divides the inner cavity of the frame (7) into a humidification chamber (8) and a drying chamber (9). The steam humidification component (6) and the drying component (3) are located in the humidification chamber (8) and the drying chamber (9) respectively. There are two of each of the steam humidification component (6) and the drying component (3), located on the upper and lower sides of the knitted fabric. The fabric flattening device is located in the drying chamber (9), and the fabric flattening device includes a conveying component (11) and a needle-punching fixing component (10). There are multiple needle-punching fixing components (10), which are installed on the conveying component (11) at equal intervals. The conveying component (11) is installed on the dryer. Mounted on the frame (7), the conveying assembly (11) drives the needle-punching fixing assembly (10) at a speed equal to that of the winding device (5) for winding the knitted fabric. The needle-punching fixing assembly (10) includes a first needle-punching rod (37), a second needle-punching rod (14), a movable plate (13), a fixed plate (16), a first drive assembly (15), and a second drive assembly (18). The fixed plate (16) is mounted on the conveying assembly (11), and the movable plate (13) is mounted on the fixed plate (16) via the first drive assembly (15). There are two first needle-punching rods (37), and both the first needle-punching rod (37) and the second needle-punching rod (14) are slidably mounted on the movable plate (13). The frame (7) corresponds to the conveying assembly (11). Both sides of the frame (7) are provided with drive plates (4). When the first drive assembly (15) abuts against the drive plate (4), it is used to control the height of the first needle rod (37) and the second needle rod (14). When the second drive assembly (18) abuts against the drive plate (4), it is used to control the horizontal position of the first needle rod (37) and the second needle rod (14) on the movable plate (13). Both sides of the frame (7) are provided with guide rollers (12). The two guide rollers (12) are used to keep the knitted fabric conveyed horizontally in the frame (7). The first drive assembly (15) includes a pressure rod (39), a first limit bolt (19) and a first spring (20). There are two pressure rods (39), which are respectively fixed to the fixed plate (16). On both sides of the first limiting bolt (19), the first limiting bolt (19) passes through the fixed plate (16) and is fixedly connected to the movable plate (13). The first spring (20) is sleeved on the outside of the first limiting bolt (19), and the first spring (20) applies a force to the movable plate (13) away from the fixed plate (16). The drive plate (4) has a first protrusion (23) and a second protrusion (30) that abut against the pressing rod (39). The first protrusion (23) includes a first wedge-shaped surface (31), a first horizontal surface (32) and a first vertical surface (33). The first horizontal surface (32) connects the first wedge-shaped surface (31) and the first vertical surface (33). The second protrusion (30) includes a second wedge-shaped surface (28) and a second horizontal surface (29).

2. The heat setting machine for knitted fabrics according to claim 1, characterized in that, Two pressure rollers (17) are provided between the two drive plates (4). The two pressure rollers (17) are located on both sides of the first vertical surface (33), and the lowest point of the pressure rollers (17) is in contact with the knitted fabric. The pressure rollers (17) have annular grooves to avoid the first needle bar (37) and the second needle bar (14).

3. The heat setting machine for knitted fabrics according to claim 1, characterized in that, The second drive assembly (18) is provided in two sets, and the two sets are mirror images of each other. The second drive assembly (18) includes a first sliding block (22), a second limiting bolt (41), a second spring (40), a drive block (25), and a reset member (35). The second limiting bolt (41) passes through the first sliding block (22) and is fixedly connected to the movable plate (13). The second spring (40) is sleeved on the second limiting bolt (41), and the second spring (40) applies a force close to the movable plate (13) to the second sliding block (52). The drive block (25) is slidably disposed on the movable plate (13), and the sliding direction of the drive block (25) is perpendicular to that of the first sliding block (22). The drive block (25) and the first sliding block (22) have mutually cooperating first... The three wedge-shaped surfaces (45) are provided with a first groove (36) for sliding the first needle rod (37) on the movable plate (13), and a second groove (44) for sliding the first needle rod (37) on the first sliding block (22). The projections of the first groove (36) and the second groove (44) on the horizontal plane are intersecting. The end of the drive block (25) away from the first sliding block (22) has a drive part (50). The drive plate (4) is provided with a third protrusion (34). The third protrusion (34) includes a fourth wedge-shaped surface (24), a second vertical surface (26) and a fifth wedge-shaped surface (27). The second vertical surface (26) connects the fourth wedge-shaped surface (24) and the fifth wedge-shaped surface (27). The two first grooves (36) are arranged in a figure-eight shape.

4. A heat setting machine for knitted fabrics according to claim 3, characterized in that, The reset component (35) includes a third limiting bolt (46), a third spring (48), and a pressure block (47). The pressure block (47) is fixedly connected to the movable plate (13) by bolts. The driving block (25) is slidably disposed with the pressure block (47), and a protruding ridge (49) is provided in the middle of the driving block (25). One end of the third limiting bolt (46) passes through the pressure block (47) and is fixedly connected to the protruding ridge (49). The third spring (48) is sleeved on the outside of the third limiting bolt (46), and both ends of the third spring (48) abut against the pressure block (47) and the protruding ridge (49) respectively.

5. A heat setting machine for knitted fabrics according to claim 4, characterized in that, The second drive assembly (18) further includes a connecting plate (21), a second sliding block (52), a fourth limiting bolt (43), and a fourth spring (42). The fourth limiting bolt (43) passes through the connecting plate (21) and is fixedly connected to the movable plate (13). The fourth spring (42) is sleeved on the outside of the fourth limiting bolt (43) and applies a force close to the movable plate (13) to the connecting plate (21). The two ends of the connecting plate (21) and one end of the first sliding block (22) have lugs (51) that cooperate with each other. The movable plate (13) is also provided with a third sliding groove (38) for the second needle rod (14) to slide. The second sliding block (52) is fixedly connected to the connecting plate (21). One end of the second needle rod (14) is installed on the second sliding block (52), and the sliding direction of the second needle rod (14) is parallel to the conveying direction of the knitted fabric.

6. A heat setting machine for knitted fabrics according to claim 1, characterized in that, The conveying component (11) is a chain conveyor or a belt conveyor.

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