Rib collar weaving circular machine and weaving method

Abstract

The invention discloses a rib collar weaving circular machine and a weaving method.The circular machine comprises a main machine and a winding assembly arranged at the bottom of the main machine, the winding assembly is used for flattening formed cylindrical rib collars and winding the cylindrical rib collars into bundles, the winding assembly is provided with a plurality of shaft assemblies sequentially entering the winding position, and the shaft assemblies are arranged on the winding position. The shaft assembly comprises a shaft body, a groove formed in the shaft body, a cutter holder arranged in the groove and a pressing part used for pressing the head end of a follow-up rib collar. By arranging the cutting mechanism, a rib collar blank can be cut off, the head end of a follow-up rib collar can be conveyed into the shaft body to be fixed, the head end of the rib collar is fixed through extrusion of the pressing part and the inner wall of the groove, then the shaft body replaces the previous shaft body for winding, continuous winding can be carried out under the condition that a machine is not stopped, and the production efficiency is improved. The starting and stopping frequency of the circular knitting machine is greatly reduced, the yarn breakage problem caused by starting and stopping of the circular knitting machine is reduced, and the yield is increased.

Description

Technical Field

[0001] This invention relates to the field of garment weaving, specifically to a circular knitting machine for ribbed collars and a weaving method thereon. Background Technology

[0002] Ribbed collars are elastic necklines made with a special alternating knitting structure. They can be easily stretched to allow the head and neck to pass through, and can also automatically shrink to fit the neck tightly. In industry, ribbed collars are generally woven using small circular knitting machines. The circular knitting machine weaves the yarn into a continuous tubular blank through a rotating cylinder, and then winds it up through a winding device. In subsequent processes, it is further cut into individual ribbed collars.

[0003] In existing circular knitting machines, the winding rod is usually switched manually after the previous bundle is wound up to start the next bundle. Because the rib neckline is small and thick, and the length of each bundle is short, the existing winding device has weak automatic switching capability and requires frequent machine stops to replace the winding rod. During the frequent machine stops and starts, the tension of the yarn feeding component is easily unstable, which leads to frequent yarn breakage and a high defect rate. Summary of the Invention

[0004] The purpose of this invention is to provide a circular knitting machine and method for rib collar weaving, which solves the problem that the winding device in existing circular knitting machines lacks an automatic switching function for the winding rod.

[0005] The present invention achieves the above objectives through the following technical solutions: A circular knitting machine for rib collars includes a main machine and a winding assembly disposed at the bottom of the main machine. The winding assembly is used to flatten the formed tubular rib collar and wind it into a bundle. The winding assembly is provided with a plurality of shaft assemblies that enter the winding position in sequence. The shaft assembly includes a shaft body, a groove opened in the shaft body, a cutter seat disposed in the groove, and a pressing part for pressing the end of the subsequent rib collar. It also includes a cutting mechanism, which includes a cutting blade and an extrusion strip that are raised and lowered, the extrusion strip being used to feed the subsequent ribbed collar end into the pressing part.

[0006] As a preferred embodiment of the present invention, the host includes a main frame, a yarn feeding assembly, a cam assembly, and a knitting assembly. This embodiment is prior art. The knitting assembly includes a cylinder and knitting needles. By rotating, the knitting needles are guided by the cam assembly to extend and retract, thereby forming a continuous cylindrical blank.

[0007] As a preferred embodiment of the present invention, the winding assembly includes a rotating seat and a side plate disposed on the rotating seat. A pair of guide rollers and a pair of flattening rollers are disposed on the side plate. The guide rollers and flattening rollers are perpendicular to each other. Since the cylindrical continuous blank continues to rotate with the syringe after forming, the winding assembly at the bottom also rotates. Specifically, it is driven by the rotating seat and the driving part disposed at the bottom of the rotating seat, and rotates at the same frequency as the syringe.

[0008] As a preferred embodiment of the present invention, the circular knitting machine further includes a tensioning mechanism, which includes a groove formed on the side plate, a tensioning roller, and a telescopic component for driving the tensioning roller to slide. The two ends of the tensioning roller are slidably connected to the grooves on the two side plates, and a sensor for monitoring tension is also provided at the connection between the end of the tensioning roller and the telescopic component. This solution maintains the blank with appropriate tension during the cutting and switching of the shaft assembly by setting a tensioning mechanism. Specifically, the tension is monitored by the sensor. When the tension is less than a first preset value, the tensioning roller is driven to slide along the groove. When the winding is proceeding normally, the tensioning roller returns after the pressure increases to a value greater than a second preset value.

[0009] As a preferred embodiment of the present invention, the circular knitting machine further includes an automatic winding mechanism disposed on the side plate, which is used to store the shaft assembly and to complete the switching and winding of the shaft assembly. The automatic winding mechanism includes a first guide groove opened on the side plate for storing the shaft assembly, a second guide groove for pre-winding the shaft assembly, a third guide groove for moving the shaft assembly into the winding position, and a switching mechanism disposed at the guide groove connection for controlling the movement of the shaft assembly. The shaft body is rotatably equipped with bushings that slide with guide grooves near both ends. Gears are provided at the ends of the shaft body. A first drive tooth for winding the shaft assembly is provided on the side plate at the corresponding winding position. A second drive tooth for pre-winding the shaft assembly is provided at one end of the second guide groove. This solution uses an automatic winding mechanism, which can add multiple shaft assemblies at once and transport them one by one to the cutting and winding positions, so as to enable continuous output without stopping the machine, improve efficiency, and effectively reduce the start-stop frequency, which can reduce the defect rate to a certain extent.

[0010] As a preferred embodiment of the present invention, a release mechanism and a release drive component for driving the release mechanism to open and close are provided on the side plate at the corresponding winding position. In this embodiment, by providing a release mechanism, when the rotating seat rotates to align with the main unit outlet, the release mechanism is opened to discharge the wound shaft assembly.

[0011] In a preferred embodiment of the present invention, the direction of the second guide groove is the same as the lifting direction of the cutting mechanism. The cutting mechanism includes a cylinder mounted on a rotating seat and a crossbeam mounted on the output end of the cylinder. The cutting blade and the extrusion strip are mounted on the crossbeam, and the two ends of the crossbeam are provided with lifting parts for supporting the bushing. The lifting parts are slidably connected to the crossbeam, and a tension spring is provided between the lifting parts and the crossbeam. The tension spring is used to provide thrust after cutting to make the gear mesh with the second drive gear to pre-wind the leading end of the subsequent thread. This solution, by setting a pre-winding structure, enables the leading end of the subsequent thread to dock with the new shaft assembly. When the shaft assembly is driven to rotate, the winding can be opened. After the pre-winding is completed, the shaft assembly enters the winding position to make room for the next cutting connection.

[0012] As a preferred embodiment of the present invention, the shaft body is provided with a spring for providing clamping force to the clamping part, and the shaft body is also provided with a counterweight to make the groove of the shaft body face the cutting mechanism. In this embodiment, the clamping part is connected and fixed to the subsequent rib collar end by setting the spring. During cutting, the rib collar blank is fed into the clamping part by the extrusion strip, and then the cutter cuts the rib collar blank. After the cutter is withdrawn, the clamping part connects and fixes the cut rib collar blank.

[0013] In order to implement the above-mentioned circular knitting machine, the present invention also proposes a rib collar weaving method based on any of the above-mentioned circular knit collar weaving machines, comprising the following steps: S1: The main machine continuously weaves a tubular rib collar blank, and the winding assembly follows the rotation of the blank and drives the shaft assembly to wind it up; S2: When the previous shaft assembly is finished winding, the rib collar blank is cut by the cutting mechanism, and the subsequent rib collar end is fixed to the next shaft assembly by the extrusion strip; S3: The previous axis assembly moves out of the main unit, and the next axis assembly continues to wind up the ribbed blank; S4: Repeat steps S2-S3 to obtain several coiled threaded blanks.

[0014] The beneficial effects of this invention are as follows: By setting a cutting mechanism, this invention can cut the rib collar blank and feed the subsequent rib collar end into the shaft body for fixation. The rib collar end is fixed by pressing the clamping part against the inner wall of the groove. Then, the shaft body takes over from the previous shaft body for winding, which can continuously wind without stopping the machine. This greatly reduces the frequency of starting and stopping the circular knitting machine, which helps to reduce the yarn breakage problem caused by starting and stopping the circular knitting machine and improve the yield rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the host computer of the present invention; Figure 2 This is a cross-sectional view of the main structure of the present invention; Figure 3 For the present invention Figure 2 Side view; Figure 4 For the present invention Figure 2 Side sectional view; Figure 5 For the present invention Figure 3 Enlarged view of the structure of section A in the middle; Figure 6 For the present invention Figure 4 Enlarged view of the structure of section B; Figure 7 This is a schematic diagram of the cutting mechanism and shaft assembly of the present invention; Figure 8 For the present invention Figure 7 C-axis view; In the diagram: 1. Main unit; 11. Main frame; 12. Yarn feeding assembly; 13. Triangular assembly; 14. Weaving assembly; 2. Winding assembly; 21. Drive unit; 22. Rotary seat; 23. First side plate; 24. Guide roller; 25. Flattening roller; 26. Second side plate; 27. Support rod; 3. Tensioning mechanism; 31. Slide groove; 32. Tensioning roller; 33. Telescopic component; 34. Sensor; 4. Automatic winding mechanism; 41. First drive tooth; 42. 43. Second drive gear; 44. Release mechanism; 45. Release drive component; 46. First guide groove; 47. Second guide groove; 48. Third guide groove; 49. Switching mechanism; 50. Shaft assembly; 51. Shaft body; 52. Gear; 53. Bushing; 54. Cutting knife holder; 55. Pressing part; 56. Counterweight; 57. Spring; 60. Cutting mechanism; 61. Crossbeam; 62. Cylinder; 63. Lifting part; 64. Tension spring; 65. Extrusion strip; 66. Cutting knife. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0017] Example 1 like Figure 1-8 As shown, a circular knitting machine for rib collar includes a main machine 1 and a winding assembly 2 disposed at the bottom of the main machine 1. The winding assembly 2 is used to flatten the formed tubular rib collar and wind it into a bundle. The winding assembly 2 is provided with a plurality of shaft assemblies 5 that enter the winding position in sequence. The shaft assembly 5 includes a shaft body 51, a groove opened in the shaft body 51, a cutter seat 54 disposed in the groove, and a pressing part 55 for pressing the end of the subsequent rib collar. It also includes a cutting mechanism 6, which includes a cutting blade 66 with a lifting mechanism and an extrusion strip 65, the extrusion strip 65 being used to feed the subsequent ribbed collar end into the pressing part 55.

[0018] This invention, by setting a cutting mechanism 6, can cut the ribbed collar blank and fix the subsequent ribbed collar end inside the shaft 51. The ribbed collar end is fixed by pressing the clamping part 55 against the inner wall of the groove. Then, the shaft 51 takes over from the previous shaft 51 to wind up, which can continuously wind up without stopping the machine. This greatly reduces the frequency of starting and stopping the circular knitting machine, which helps to reduce the yarn breakage problem caused by starting and stopping the circular knitting machine and improve the yield rate.

[0019] In use, the main unit 1 continuously generates ribbed blanks and feeds them into the winding assembly 2. The shaft assemblies 5 of the winding assembly 2 enter the winding position in sequence. After the previous shaft assembly 5 has finished winding, the cutting mechanism 6 is started to cut the ribbed blanks and feed the subsequent ribbed head end into the pressing part 55 through the extrusion strip 65. Then, the shaft assembly 5 that has finished winding is released out of the main unit 1. After the new shaft assembly 5 has completed pre-winding, it enters the winding position for winding.

[0020] The main unit 1 includes a main frame 11, a yarn feeding assembly 12, a cam assembly 13, and a knitting assembly 14. This solution is existing technology. The knitting assembly 14 includes a cylinder and knitting needles. By rotating, the knitting needles are guided by the cam assembly to extend and retract, thereby forming a continuous cylindrical blank.

[0021] Preferably, the winding assembly 2 includes a rotating seat 22 and a side plate disposed on the rotating seat 22. A pair of guide rollers 24 and a pair of flattening rollers 25 are disposed on the side plate. The guide rollers 24 and the flattening rollers 25 are perpendicular to each other. Since the cylindrical continuous blank continues to rotate with the syringe after forming, the winding assembly 2 at the bottom also rotates. Specifically, it is driven by the rotating seat 22 and the driving part 21 disposed at the bottom of the rotating seat 22, and rotates at the same frequency as the syringe.

[0022] Preferably, the circular knitting machine further includes a tensioning mechanism 3, which includes a groove 31 on the side plate, a tensioning roller 32, and a telescopic member 33 for driving the tensioning roller 32 to slide. The two ends of the tensioning roller 32 are slidably connected to the grooves 31 on the two side plates, and a sensor 34 for monitoring tension is also provided at the connection between the end of the tensioning roller 32 and the telescopic member 33. By setting the tensioning mechanism 3, this solution maintains the blank with appropriate tension during the cutting and switching shaft assembly 5 process. Specifically, the tension is monitored by the sensor 34. When the tension is less than the first preset value, the tensioning roller 32 is driven to slide along the groove. When the winding is in normal operation, the tensioning roller 32 returns after the pressure increases to a value greater than the second preset value.

[0023] Preferably, the circular knitting machine further includes an automatic winding mechanism 4 disposed on the side plate, which is used to store the shaft assembly 5 and to switch and rewind the shaft assembly 5. The automatic winding mechanism 4 includes a first guide groove 45 opened on the side plate for storing the shaft assembly 5, a second guide groove 46 for pre-winding the shaft assembly 5, a third guide groove 47 for moving the shaft assembly 5 into the winding position, and a switching mechanism 48 disposed at the guide groove connection for controlling the movement of the shaft assembly 5. The shaft body 51 is rotatably provided with bushings 53 that are slidably connected to the guide grooves near both ends. The shaft body 51 is provided with gears 52 at the ends. The side plate is provided with a first drive tooth 41 that drives the shaft assembly 5 to wind up at the corresponding winding position. The second drive tooth 42 that drives the shaft assembly 5 to pre-wind up is provided at one end of the second guide groove 46.

[0024] This solution uses an automatic winding mechanism 4, which can add multiple shaft assemblies 5 at once and transport them one by one to the cutting and winding positions, so as to enable continuous output without stopping the machine, improve efficiency, and effectively reduce the start-stop frequency, which can reduce the defect rate to a certain extent. It should be noted that the side plate is incomplete due to the setting of three guide grooves. Therefore, the side plate is divided into two sections, with the guide grooves as the boundary, namely the first side plate 23 and the second side plate 26. The second side plate 26 is connected and fixed from the outside by an L-shaped support rod 27.

[0025] Preferably, a release mechanism 43 and a release drive component 44 for driving the release mechanism 43 to open and close are provided on the side plate corresponding to the winding position. In this solution, by setting the release mechanism 43, when the rotating seat 22 rotates to align with the outlet of the host 1, the release mechanism 43 is opened to discharge the wound shaft assembly 5. Specifically, the release mechanism 43 is an arc-shaped hinge rod that contacts the bushing 53. The outer side of the hinge rod is provided with a protrusion. The direction drive component 44 is a telescopic rod. The tail end of the telescopic rod is hinged to the first side plate 23, and the output end is hinged to the protrusion.

[0026] Preferably, the direction of the second guide groove 46 is the same as the lifting direction of the cutting mechanism 6. The cutting mechanism 6 includes a cylinder 62 mounted on the rotating seat 22 and a crossbeam 61 mounted on the output end of the cylinder 62. The cutting blade 66 and the extrusion strip 65 are mounted on the crossbeam 61. The two ends of the crossbeam 61 are provided with lifting parts 63 for supporting the bushing 53. The lifting parts 63 are slidably connected to the crossbeam 61. A tension spring 64 is provided between the lifting parts 63 and the crossbeam 61. The tension spring 64 is used to provide thrust after cutting to make the gear 52 mesh with the second drive gear 42 to pre-wind the leading end of the subsequent thread. This solution sets a pre-winding structure so that the leading end of the subsequent thread can be connected with the new shaft assembly 5. When the shaft assembly 5 is driven to rotate, it can start winding. After the pre-winding is completed, the shaft assembly 5 enters the winding position so as to make room for the next cutting connection.

[0027] Specifically, a spring 57 is provided inside the shaft 51 to provide clamping force to the clamping part 55. A counterweight 56 ​​is also provided inside the shaft 51 to make the groove of the shaft 51 face the cutting mechanism 6. In this solution, the spring 57 is set so that the clamping part 55 connects and fixes the subsequent rib collar end. During cutting, the rib collar blank is fed into the clamping part 55 by the extrusion strip 65. Then the cutter 66 cuts the rib collar blank. After the cutter 66 is withdrawn, the clamping part 55 connects and fixes the cut rib collar blank.

[0028] In order to implement the above-mentioned circular knitting machine, the present invention also proposes a rib collar weaving method based on any of the above-mentioned circular knit collar weaving machines, comprising the following steps: S1: The main machine 1 continuously weaves a tubular ribbed collar blank, and the winding assembly 2 follows the rotation of the blank and drives the shaft assembly 5 to wind it up; S2: When the previous shaft assembly 5 is finished winding, the rib collar blank is cut by the cutting mechanism 6, and the subsequent rib collar end is fixed to the next shaft assembly 5 by the extrusion strip 65. S3: The previous shaft assembly 5 moves out of the host machine 1, and the next shaft assembly 5 continues to wind up the ribbed blank; S4: Repeat steps S2-S3 to obtain several coiled threaded blanks.

[0029] The yarn feeding assembly 12 feeds in the yarn, which is then formed into a threaded collar blank by the braiding assembly 14 and the triangular assembly 13 and enters the bottom of the main frame 11. After passing through the guide roller 24 and the flattening roller 25, it becomes a folded, flat blank, which is then wound up after passing over the tension roller 32. Figure 4 As shown, the shaft assembly 5 at the winding position (i.e., the direction mechanism 43 position) is winding up. The next shaft assembly 5 has been sent to the bottom of the second guide groove 46 (i.e., the cutting position) by the switching mechanism 48 for preparation. When the winding of the shaft assembly 5 at the winding position is about to be completed, the cutting mechanism 6 rises. The lifting part 63 first lifts the bushing 53, so that the gear 52 meshes with the second drive gear 42. The shaft assembly 5 rises to the top of the second guide groove 46. Then the crossbeam 61 continues to move upward so that the extrusion bar 65 squeezes the blank into the space between the pressing part 55 and the groove. At the same time, the cutting blade 66 and the cutting blade seat 54 cooperate to cut the blank. Then the crossbeam 61 descends a short distance, causing the cutter 66 and the extrusion strip 65 to leave the groove, but the supporting part 65 still has enough pressure to make the gear 52 mesh with the second drive gear 42, and the second drive gear 42 drives the shaft assembly 5 to rotate counterclockwise (towards...). Figure 3-5(From a certain perspective) Pre-winding is performed. After pre-winding is completed, the crossbeam 61 descends, causing the shaft assembly 5 to fall to the bottom of the second guide groove 46. The release mechanism 43 releases the shaft assembly 5 after winding. The switching mechanism 48 slides the pre-wound shaft assembly 5 into the third guide groove 47 into the winding position, and the new shaft assembly 5 enters the bottom of the second guide groove 51. The shaft assembly 5 that has slid into the winding position meshes with the first drive tooth 41 and drives the shaft assembly 5 to wind up. After winding is completed, the next cycle begins.

[0030] The embodiments described above are merely examples of several implementations of the present invention, and 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 those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A rib knitting circular machine characterized in that, The application relates to a circular knitting machine, which comprises a main machine (1) and a winding assembly (2) arranged at the bottom of the main machine (1) and used for flattening and winding a formed tubular ribbed collar into a bundle, a plurality of shaft assemblies (5) arranged in sequence on the winding assembly (2) and entering a winding position, the shaft assembly (5) comprising a shaft body (51), a groove arranged on the shaft body (51), a cutter seat (54) arranged in the groove and a pressing part (55) used for pressing the head end of a subsequent ribbed collar. The application further comprises a cutting mechanism (6) comprising a lifting cutter (66) and a pressing strip (65) used for feeding the head end of the subsequent ribbed collar into the pressing part (55).

2. A rib hosiery circular knitting machine according to claim 1, characterized in that, The main machine (1) comprises a main frame (11), a yarn feeding assembly (12), a cam assembly (13) and a knitting assembly (14).

3. A rib hosiery circular knitting machine according to claim 1, characterized in that, The winding assembly (2) comprises a rotating seat (22) and a side plate arranged on the rotating seat (22), a pair of guide rollers (24) and a pair of flattening rollers (25) are arranged on the side plate, and the guide rollers (24) and the flattening rollers (25) are perpendicular to each other.

4. A rib hosiery circular knitting machine according to claim 3, characterized in that, The circular knitting machine further comprises a tensioning mechanism (3) comprising a sliding groove (31) arranged on the side plate, a tensioning roller (32) and a telescopic piece (33) used for driving the tensioning roller (32) to slide, the two ends of the tensioning roller (32) are respectively connected with the sliding grooves (31) on the two side plates in a sliding mode, and a sensor (34) for monitoring tension is arranged at the connecting position between the end of the tensioning roller (32) and the telescopic piece (33).

5. A rib hosiery circular knitting machine according to claim 3, characterized in that, The circular knitting machine further comprises an automatic winding mechanism (4) arranged on the side plate and used for storing the shaft assembly (5) and completing the switching and winding of the shaft assembly (5), the automatic winding mechanism (4) comprises a first guide groove (45) arranged on the side plate and used for storing the shaft assembly (5), a second guide groove (46) used for pre-winding the shaft assembly (5), a third guide groove (47) used for making the shaft assembly (5) enter a winding position and a switching mechanism (48) arranged at the connecting position of the guide grooves and used for controlling the movement of the shaft assembly (5). The shaft body (51) is rotatably arranged near the two ends and is connected with the guide grooves in a sliding mode, a gear (52) is arranged at the end of the shaft body (51), a first driving gear (41) for driving the winding of the shaft assembly (5) is arranged on the side plate corresponding to the winding position, and a second driving gear (42) for driving the pre-winding of the shaft assembly (5) is arranged at one end of the second guide groove (46).

6. A rib hosiery circular knitting machine according to claim 5, characterized in that, A release mechanism (43) corresponding to the winding position is arranged on the side plate, and a release driving piece (44) for driving the opening and closing of the release mechanism (43) is arranged on the side plate.

7. A rib hosiery circular knitting machine according to claim 5, characterized in that, The direction of the second guide groove (46) is the same as the lifting direction of the cutting mechanism (6), the cutting mechanism (6) comprises a cylinder (62) arranged on the rotating seat (22), a cross beam (61) arranged at the output end of the cylinder (62), the cutting knife (66) and the extrusion strip (65) are arranged on the cross beam (61), and the cross beam (61) is provided with a lifting part (63) for lifting the shaft sleeve (53) at both ends, the lifting part (63) is in sliding connection with the cross beam (61), and a tension spring (64) is arranged between the lifting part (63) and the cross beam (61), the tension spring (64) is used to provide a pushing force to make the gear (52) engage with the second driving tooth (42) after cutting, so as to pre-roll the subsequent rib head end.

8. A rib hosiery circular knitting machine according to claim 1, characterized in that, The spring (57) arranged in the shaft body (51) provides clamping force for the compression part (55), and the counterweight (56) is further arranged in the shaft body (51) to make the groove of the shaft body (51) face the cutting mechanism (6).

9. A method of rib knitting on a circular knitting machine according to any one of claims 1 to 8, characterized in that, The method comprises the following steps: S1: continuously weaving a tubular rib base material by using the main machine (1), and rotating the base material by using the winding assembly (2) and driving the shaft assembly (5) to wind; S2: when the winding of the previous shaft assembly (5) is completed, the rib base material is cut by the cutting mechanism (6), and the subsequent rib head end is fixed on the next shaft assembly (5) by the extrusion strip (65); S3: the previous shaft assembly (5) moves out of the main machine (1), and the next shaft assembly (5) continues to wind the rib base material; S4: repeat steps S2-S3 to obtain a plurality of wound rib base materials.

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