Traction device for seamless underwear machine capable of preventing cloth from being damaged

Abstract

The utility model relates to the technical field of traction devices, in particular to a traction device for a seamless underwear machine capable of preventing cloth from being damaged, which comprises a fixing plate capable of being fixed on the seamless underwear machine; the first traction roller is rotationally arranged on the front portion of the fixing plate, and the surface of the first traction roller is further sleeved with a rubber cylinder; the second traction rollers are rotationally arranged on the front portion of the fixing plate, and the two sets of second traction rollers are arranged on the two sides of the first traction roller; the limiting assembly is arranged at the position, close to the second traction roller, of the front portion of the fixing plate and used for restraining the cloth to the center position of the second traction roller; the pressing assembly is arranged right above the first traction roller; the driving assembly is arranged on the back of the fixing plate and used for driving the first traction roller and the second traction roller to rotate synchronously. According to the utility model, the limiting assembly is arranged for restraining the cloth to the central position of the traction roller, so that the cloth is prevented from deviating.

Description

Technical Field

[0001] The utility model relates to the technical field of pulling devices, in particular to a pulling device for seamless underwear machines which can prevent fabrics from being damaged. Background Art

[0002] As a significant achievement in modern knitting technology, seamless underwear knitting machines utilize advanced knitting processes to achieve seamless underwear production, significantly improving production efficiency and product quality. However, the pulling mechanism, a key component in the production process, directly impacts the fabric pulling effect and the quality of the final product.

[0003] Traditional seamless underwear machine pulling devices mostly use a mechanical pulling method, using one or several groups of parallel pulling rollers to pull and curl the fabric. Although this method can complete basic pulling tasks, it has many defects during actual use. For example, the fabric is prone to deviation during the pulling process, which is a particularly prominent problem. If the fabric deviates, the subsequent cutting of the fabric will cause the fabric to be cut, affecting the production of underwear. Due to the limitations of factors such as the structural design and operation mode of the pulling roller, it is difficult for the fabric to always remain in the center position of the pulling roller when passing through the pulling roller. Once the fabric deviates, subsequent cutting or sewing processes will be seriously affected. Fabric deviation will lead to uneven coil distribution during the sewing process, which in turn affects the dimensional accuracy and appearance quality of the underwear product. Utility Model Content

[0004] The purpose of the utility model is to provide a pulling device for a seamless underwear machine that prevents fabric damage, by providing a limiting component for constraining the fabric to the center position of a pulling roller to avoid fabric deviation.

[0005] In order to solve the problems of the prior art, the utility model provides a pulling device for a seamless underwear machine to prevent fabric damage, comprising: a fixed plate capable of being fixed to the seamless underwear machine; a first pulling roller rotatably arranged at the front of the fixed plate, and a rubber tube is also sleeved on the surface of the first pulling roller; a second pulling roller rotatably arranged at the front of the fixed plate, and two groups of the second pulling rollers are provided and arranged on both sides of the first pulling roller; a limiting assembly is arranged at a position near the second pulling roller in the front of the fixed plate, and is used to constrain the fabric to the center position of the second pulling roller; a pressing assembly is arranged directly above the first pulling roller; a driving assembly is arranged at the back of the fixed plate and is used to drive the first pulling roller and the second pulling roller to rotate synchronously; the limiting assembly includes limiting rings distributed at both ends of the second pulling roller, the two limiting rings can approach or move away synchronously, and the limiting rings constrain the fabric to the center position of the second pulling roller, and the limiting assembly also includes a synchronization assembly that can drive the two limiting rings to move synchronously.

[0006] Preferably, the second pulling roller is provided with a slide groove along its length direction, and a plurality of slide grooves are provided on the second pulling roller. The inner wall of the limiting ring is also provided with a slider that can cooperate with the slide groove, and the second pulling roller and the limiting ring can rotate synchronously.

[0007] Preferably, the limiting assembly includes a bearing sleeved on the second pulling roller, and the limiting assembly also includes a connecting frame connected to the outer ring of the bearing, and the synchronization assembly can enable the connecting frame to drive the limiting ring to move closer or farther away.

[0008] Preferably, the synchronization component includes a fixed frame fixed on the fixed plate, and a screw is rotatably arranged in the fixed frame, and the screw is rotatably connected to the connecting frame. The synchronization component also includes a first rotating drive component arranged on the back of the fixed plate for driving the screw to rotate.

[0009] Preferably, the pressing assembly includes a pressing wheel that can move up and down and can press the cloth onto the first pulling roller. The pressing assembly also includes a lifting plate that can move up and down. The bottom of the lifting plate is connected to a sleeve. A sliding rod is slidingly arranged inside the sleeve, and a spring is provided on the outside of the sliding rod. The pressing assembly also includes a wheel frame rotatably connected to the pressing wheel, and the wheel frame is connected to the sliding rod.

[0010] Preferably, a pressure sensor for detecting the reaction force of the wheel frame is further provided between the lifting plate and the wheel frame.

[0011] Preferably, the pressing assembly also includes a connecting plate installed on the fixed plate and a guide rod slidingly engaged with the connecting plate, the bottom of the guide rod is connected to the top of the lifting plate, and a telescopic drive component is also fixed at the center position of the top of the connecting plate, and the output end of the telescopic drive component is connected to the top of the lifting plate.

[0012] Preferably, the drive assembly includes a first gear arranged at one end of the first pulling roller and a second gear arranged at one end of the second pulling roller, the first gear is engaged with the second gear, the drive assembly also includes a driven pulley arranged outside the first gear and coaxially connected to the first gear, the drive assembly also includes a second rotating drive member fixed to the back of the fixed plate, the output end of the second rotating drive member is connected to the driving pulley, and the driving pulley and the driven pulley are connected by a belt.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application provides a limiting assembly, and the limiting assembly includes limiting rings arranged at both ends of the second pulling roller. When the cloth is stuck in the two limiting rings, the limiting rings can constrain the cloth to the center position of the first pulling roller and the second pulling roller to prevent the cloth from being offset. The screw rod can be rotated by the action of the first rotating drive member, so that the two limiting rings can be synchronously approached or moved away, so that the device can adapt to cloths of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the first three-dimensional structure of a pulling device for a seamless underwear machine that prevents fabric damage according to the present invention;

[0015] Figure 2 This is a second three-dimensional structural diagram of a pulling device for a seamless underwear machine that prevents fabric damage according to the present invention;

[0016] Figure 3 This is a schematic diagram of the first three-dimensional structure of a limiting component of a pulling device for a seamless underwear machine for preventing fabric damage according to the utility model;

[0017] Figure 4 This is a schematic diagram of the second three-dimensional structure of a limiting component of a pulling device for a seamless underwear machine for preventing fabric damage according to the utility model;

[0018] Figure 5 This is a first three-dimensional structural diagram of a pressing assembly and a driving assembly of a pulling device for a seamless underwear machine for preventing fabric damage according to the utility model;

[0019] Figure 6 This is a second stereoscopic structural diagram of a pressing assembly and a driving assembly of a pulling device for a seamless underwear machine that prevents fabric damage according to the present invention.

[0020] The numbers in the figure are: 1. fixed plate; 2. first pulling roller; 3. second pulling roller; 31. slide groove; 4. limit assembly; 41. limit ring; 42. bearing; 43. connecting frame; 44. screw rod; 45. fixed frame; 46. first rotating drive member; 5. pressing assembly; 51. connecting plate; 52. lifting plate; 53. wheel frame; 54. pressure sensor; 55. telescopic drive member; 56. guide rod; 57. sleeve; 571. slide rod; 572. spring; 58. pressing wheel; 6. drive assembly; 61. second rotating drive member; 611. driving pulley; 62. driven pulley; 63. first gear; 64. second gear. DETAILED DESCRIPTION

[0021] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is described in further detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Reference Figures 1-6As shown, the utility model provides a pulling device for a seamless underwear machine to prevent fabric damage, comprising: a fixed plate 1, which can be fixed to the seamless underwear machine; a first pulling roller 2, which is rotatably arranged at the front of the fixed plate 1, and the surface of the first pulling roller 2 is also covered with a rubber tube; a second pulling roller 3, which is rotatably arranged at the front of the fixed plate 1, and the second pulling roller 3 is provided in two groups and is arranged on both sides of the first pulling roller 2; a limiting assembly 4, which is arranged at the front of the fixed plate 1 near the second pulling roller 3 and is used to constrain the fabric to the center position of the second pulling roller 3; a pressing assembly 5, which is arranged directly above the first pulling roller 2; a driving assembly 6, which is arranged at the back of the fixed plate 1 and is used to drive the first pulling roller 2 and the second pulling roller 3 to rotate synchronously; the limiting assembly 4 includes limiting rings 41 distributed at both ends of the second pulling roller 3, the two limiting rings 41 can move synchronously towards or away from each other, and the limiting rings 41 constrain the fabric to the center position of the second pulling roller 3, and the limiting assembly 4 also includes a synchronization assembly that can drive the two limiting rings 41 to move synchronously.

[0023] When the seamless underwear machine is operating, the fabric enters the pulling mechanism. First, the synchronization assembly within the limit assembly 4 drives the two limit rings 41 to move synchronously, confining the fabric to the center of the second pulling roller 3 and ensuring that the fabric does not shift during the pulling process. Subsequently, the drive assembly 6 activates, driving the first and second pulling rollers 2 and 3 to rotate synchronously. The rubber rollers on the surface of the first pulling roller 2 increase friction with the fabric, driving the fabric forward. Simultaneously, the pressing assembly 5 applies pressure to the fabric, ensuring full contact with the first pulling roller 2 and enhancing the pulling effect. Two sets of second pulling rollers 3 on either side of the first pulling roller 2 assist in pulling the fabric, allowing the fabric to pass smoothly and steadily through the pulling mechanism, thus achieving a seamless underwear machine pulling function that prevents fabric damage.

[0024] The second pulling roller 3 is provided with a plurality of chute grooves 31 along its length. The inner wall of the retaining ring 41 is also provided with a slider that engages with the chute grooves 31, allowing the second pulling roller 3 and the retaining ring 41 to rotate synchronously. The coordinated design of the chute grooves 31 and the slider ensures that the retaining ring 41 can slide relative to the second pulling roller 3 while also enabling synchronous rotation of the second pulling roller 3 and the retaining ring 41. This means that when the second pulling roller 3 is driven to rotate, the retaining ring 41 also rotates synchronously.

[0025] The limiting assembly 4 includes a sleeve mounted on the bearing 42 , and the limiting assembly 4 also includes a connecting frame 43 connected to the outer ring of the bearing 42 . The synchronization assembly can enable the connecting frame 43 to drive the limiting ring 41 to move closer or farther away.

[0026] The synchronization component includes a fixed frame 45 fixed on the fixed plate 1, and a screw rod 44 is rotatably arranged in the fixed frame 45, and the screw rod 44 is rotatably connected to the connecting frame 43. The synchronization component also includes a first rotating drive member 46 arranged on the back of the fixed plate 1 for driving the screw rod 44 to rotate.

[0027] Before the pulling device operates, the first rotary drive element 46 is activated based on the required width and position of the fabric, driving the screw 44 to rotate. Because the screw 44 is rotationally connected to the connecting frame 43, the connecting frame 43 is driven by the screw 44 to perform linear motion along its axis. Because the connecting frame 43 is connected to the outer ring of the bearing 42, the movement of the connecting frame 43 drives the retaining ring 41 toward or away from the center of the second pulling roller 3, adjusting the retaining ring 41 to the appropriate position to constrain the fabric to the center of the second pulling roller 3. During operation of the pulling device, the retaining ring 41 rotates synchronously with the second pulling roller 3, maintaining a constant retaining effect on the fabric.

[0028] The pressing assembly 5 includes a pressing wheel 58 that can move up and down and can press the cloth onto the first pulling roller 2. The pressing assembly 5 also includes a lifting plate 52 that can move up and down. The bottom of the lifting plate 52 is connected to a sleeve 57. A slide rod 571 is slidingly provided inside the sleeve 57, and a spring 572 is provided on the outside of the slide rod 571. The pressing assembly 5 also includes a wheel frame 53 that is rotatably connected to the pressing wheel 58, and the wheel frame 53 is connected to the slide rod 571.

[0029] By driving the lifting plate 52 up and down, the sleeve 57, the slide rod 571, and the wheel frame 53 move together, thereby adjusting the distance between the pressing wheel 58 and the first pulling roller 2, thereby changing the pressure exerted by the pressing wheel 58 on the cloth. When the cloth enters the pulling device, the pressing wheel 58, under the action of the spring 572, can press the cloth against the first pulling roller 2 with appropriate pressure.

[0030] A pressure sensor 54 is also installed between the lifting plate 52 and the wheel frame 53 to detect the reaction force of the wheel frame 53. After the pressing wheel 58 applies pressure to the fabric, the fabric feeds back pressure to the lifting plate 52 through the wheel frame 53. By monitoring this pressure value in real time, the pressure applied by the pressing wheel 58 to the fabric can be accurately determined, thereby achieving precise control of the pressure. The pressing assembly 5 also includes a connecting plate 51 mounted on the fixed plate 1 and a guide rod 56 that slidably engages with the connecting plate 51. The bottom of the guide rod 56 is connected to the top of the lifting plate 52. A telescopic drive member 55 is also fixed to the center of the top of the connecting plate 51. The output end of the telescopic drive member 55 is connected to the top of the lifting plate 52.

[0031] The telescopic drive 55 is activated, pushing the lifting plate 52 downward. This causes the guide rod 56 to slide on the connecting plate 51, simultaneously moving the wheel frame 53 and the pressing wheel 58 downward, pressing the fabric against the first pulling roller 2. During the pulling process, the pressure sensor 54 detects the pressure value fed back by the wheel frame 53 in real time and transmits this value to the control system. If the pressure value is less than the target pressure, the control system controls the telescopic drive 55 to extend further, pushing the lifting plate 52 downward further and increasing the pressure of the pressing wheel 58 on the fabric. If the pressure value is greater than the target pressure, the control system controls the telescopic drive 55 to retract, moving the lifting plate 52 upward and reducing the pressure of the pressing wheel 58 on the fabric. This real-time monitoring and automatic adjustment mechanism ensures that the pressure of the pressing wheel 58 on the fabric remains within the appropriate range, ensuring stable and smooth fabric pulling. The drive assembly 6 includes a first gear 63 arranged at one end of the first pulling roller 2 and a second gear 64 arranged at one end of the second pulling roller 3. The first gear 63 is engaged with the second gear 64. The drive assembly 6 also includes a driven pulley 62 arranged outside the first gear 63 and coaxially connected to the first gear 63. The drive assembly 6 also includes a second rotating drive member 61 fixed to the back of the fixed plate 1. The output end of the second rotating drive member 61 is connected to a driving pulley 611, and the driving pulley 611 is connected to the driven pulley 62 by a belt.

[0032] When the pulling device begins operation, the second rotary drive element 61 activates, driving the driving pulley 611. The driving pulley 611 transmits power to the driven pulley 62 via a belt. Since the driven pulley 62 is coaxially connected to the first gear 63, the first gear 63 rotates synchronously with it. The rotation of the first gear 63 meshes with the second gear 64, driving the second gear 64 to rotate synchronously. If the second gear 64 is mounted on one end of the second pulling roller 3, the second pulling roller 3 will also rotate with it. This synchronizes the rotation of the first and second pulling rollers 2 and 3, driven by the drive assembly 6, ensuring stable pulling of the fabric.

[0033] The above embodiments merely represent one or several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A pulling device for seamless underwear machine to prevent fabric damage, characterized by: include: A fixed plate (1) capable of being fixed on a seamless underwear machine; a first pulling roller (2) rotatably arranged in front of the fixed plate (1), and a rubber tube is also sleeved on the surface of the first pulling roller (2); a second pulling roller (3) rotatably arranged in front of the fixed plate (1), and two groups of the second pulling rollers (3) are provided and arranged on both sides of the first pulling roller (2); a limiting component (4) arranged in front of the fixed plate (1) near the second pulling roller (3) and used to constrain the cloth to the center position of the second pulling roller (3); a pressing component (5) arranged directly above the first pulling roller (2); A driving assembly (6) is provided on the back of the fixed plate (1) and is used to drive the first pulling roller (2) and the second pulling roller (3) to rotate synchronously; the limiting assembly (4) includes limiting rings (41) distributed at both ends of the second pulling roller (3), and the two limiting rings (41) can move synchronously toward or away from each other, and the limiting rings (41) constrain the cloth to the center position of the second pulling roller (3); the limiting assembly (4) also includes a synchronization assembly capable of driving the two limiting rings (41) to move synchronously.

2. The pulling device for seamless underwear machine for preventing fabric damage according to claim 1, characterized in that: The second pulling roller (3) is provided with a slide groove (31) along its length direction, and a plurality of slide grooves (31) are provided on the second pulling roller (3). The inner wall of the limiting ring (41) is also provided with a slider capable of cooperating with the slide groove (31), so that the second pulling roller (3) and the limiting ring (41) can rotate synchronously.

3. The pulling device for seamless underwear machine to prevent fabric damage according to claim 1, characterized in that: The limiting assembly (4) includes a bearing (42) sleeved on the second pulling roller (3), and the limiting assembly (4) also includes a connecting frame (43) connected to the outer ring of the bearing (42). The synchronization assembly can enable the connecting frame (43) to drive the limiting ring (41) to move closer or farther away.

4. The pulling device for seamless underwear machine to prevent fabric damage according to claim 3, characterized in that: The synchronization component includes a fixed frame (45) fixed on the fixed plate (1), and a screw rod (44) is rotatably arranged in the fixed frame (45), and the screw rod (44) is rotatably connected to the connecting frame (43). The synchronization component also includes a first rotation driving member (46) arranged on the back of the fixed plate (1) for driving the screw rod (44) to rotate.

5. The pulling device for seamless underwear machine to prevent fabric damage according to claim 1, characterized in that: The pressing assembly (5) includes a pressing wheel (58) that can move up and down and can press the cloth onto the first pulling roller (2). The pressing assembly (5) also includes a lifting plate (52) that can move up and down. The bottom of the lifting plate (52) is connected to a sleeve (57). A sliding rod (571) is slidably provided inside the sleeve (57), and a spring (572) is provided on the outside of the sliding rod (571). The pressing assembly (5) also includes a wheel frame (53) that is rotatably connected to the pressing wheel (58). The wheel frame (53) is connected to the sliding rod (571).

6. The pulling device for seamless underwear machine to prevent fabric damage according to claim 5, characterized in that: A pressure sensor (54) for detecting the reaction force of the wheel frame (53) is also provided between the lifting plate (52) and the wheel frame (53).

7. The pulling device for seamless underwear machine to prevent fabric damage according to claim 5, characterized in that: The pressing assembly (5) further comprises a connecting plate (51) mounted on the fixed plate (1) and a guide rod (56) slidably engaged with the connecting plate (51), the bottom of the guide rod (56) being connected to the top of the lifting plate (52), a telescopic driving member (55) being fixed at the center position of the top of the connecting plate (51), and an output end of the telescopic driving member (55) being connected to the top of the lifting plate (52).

8. The pulling device for seamless underwear machine to prevent fabric damage according to claim 1, characterized in that: The driving assembly (6) includes a first gear (63) arranged at one end of the first pulling roller (2) and a second gear (64) arranged at one end of the second pulling roller (3), the first gear (63) being meshed with the second gear (64), the driving assembly (6) further includes a driven pulley (62) arranged outside the first gear (63) and coaxially connected to the first gear (63), the driving assembly (6) further includes a second rotating driving member (61) fixed to the back of the fixed plate (1), the output end of the second rotating driving member (61) is connected to a driving pulley (611), and the driving pulley (611) and the driven pulley (62) are connected via a belt.

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