Adjustable pulling mechanism of warp knitting machine

Abstract

The present invention belongs to the technical field of warp knitting machines, and in particular to an adjustable pulling mechanism for warp knitting machines. The following scheme is proposed, comprising a mounting frame, two guide members being provided on one side of the mounting frame, two guide rollers being provided on the other side of the mounting frame, rotatable racks being provided at intermediate positions at both ends of the mounting frame, two pulling rollers being fixed between the two rotatable racks, an annular gear being fixed to the outer wall of one of the rotatable racks, a horizontally extending drive rack being engaged with the circumferential outer wall of the annular gear, an electric telescopic rod being provided at a position of the drive rack away from the annular gear, the electric telescopic rod being provided parallel to the drive rack, an electromagnetic block being provided at the telescopic end of the electric telescopic rod, and a slot being provided at a position on the outer wall of the drive rack corresponding to the electromagnetic block. When the tension on the yarn is too great, the present invention enables the drive rack to slide relative to the electromagnetic block, thereby slightly relaxing the yarn to prevent breakage due to excessive tension and the need for manual re-stretching.

Description

Technical Field

[0001] The present invention relates to the technical field of warp knitting machines, and in particular to an adjustable pulling mechanism of a warp knitting machine. Background Art

[0002] A warp knitting machine is a machine for making warp-knitted fabrics. The pulling mechanism of the warp knitting machine is mainly used to feed the wound yarn into the machine for use.

[0003] Referring to the Chinese patent with patent publication number CN222476919U, a weaving pulling and adjusting device for a warp knitting machine includes: a machine housing, a conveying roller is provided on the inner side of the machine housing; an anti-deformation mechanism, the anti-deformation mechanism is provided on the inner side of the machine housing, and the surface of the anti-deformation mechanism passes through to the outside of the machine housing; wherein, the anti-deformation mechanism includes an anti-wrinkle component provided on the inner side of the machine housing, the surface of the anti-wrinkle component is provided with an edge-shifting component, and one end of the edge-shifting component passes through to the outside of the machine housing.

[0004] However, whether in the above-mentioned existing technology or conventional means, the yarn is generally taut between the yarn and the machine and loose between the yarn and the winding drum, and the yarn is fed by the movement of the pulling mechanism. However, if the yarn is entangled with the winding drum, it is easy to cause the yarn to break due to excessive tension at both ends during the pulling process. Summary of the Invention

[0005] Based on the technical problems of the background technology, the present invention proposes an adjustable pulling mechanism of a warp knitting machine.

[0006] The adjustable pulling mechanism of a warp knitting machine proposed by the present invention includes a mounting frame, two guide members are provided on one side of the mounting frame, and two guide rollers are provided on the other side of the mounting frame. A rotating frame is rotatably provided at the middle position of both ends of the mounting frame, and two pulling rollers are fixed between the two rotating frames, and a ring gear is fixed on the outer wall of one of the rotating frames, and a horizontally extending driving rack is engaged with the circumferential outer wall of the ring gear, and an electric telescopic rod is provided at a position of the driving rack away from the ring gear, and the electric telescopic rod is parallel to the driving rack, and an electromagnetic block is installed at the telescopic end of the electric telescopic rod, and a slide groove is provided at the position corresponding to the outer wall of the driving rack and the electromagnetic block. The length of the slide groove is greater than the length of the electromagnetic block, and the electromagnetic block is magnetically adsorbed to the inner wall of the slide groove after power is applied.

[0007] Preferably, a limiting groove is provided at a position corresponding to the end face of the mounting frame and the driving rack, two limiting rods are fixed on the driving rack in the direction of the limiting groove, the limiting rods are slidably connected to the inner wall of the limiting groove, and a limiting plate is fixed between the ends of the two limiting rods away from the driving rack.

[0008] Preferably, the driving rack is located below the ring gear, and a spring is connected between the end of the driving rack facing the guide roller and the mounting frame.

[0009] Preferably, the two guide members are provided with a fixed plate and a movable plate, the fixed plate is located above the movable plate, and both sides of the fixed plate and the movable plate are configured to be an outwardly arched arc structure.

[0010] Preferably, the two ends of the fixed plate are fixedly connected to the mounting frame, and two limit rods are installed at both ends of the movable plate. A vertically extending limit slot is opened at the position of the mounting frame corresponding to the limit rod. The outer wall of the limit rod is located at both ends of the limit slot, and a limit plate is fixed thereon. A lifting assembly is connected under the movable plate.

[0011] Preferably, the lifting assembly is provided with a sliding shell fixed at the middle position of the bottom of the movable plate, the sliding shell extends vertically downward, a movable rack is slidably connected inside the sliding shell, and a spring 2 is connected between the top of the movable rack and the top inner wall of the sliding shell.

[0012] Preferably, the lifting assembly is further provided with a shaft rod, both ends of the shaft rod are rotatably connected to the mounting frame, the shaft rod is located below the electric telescopic rod, and a gear 1 meshing with the moving rack is fixed to the outer wall of the shaft rod.

[0013] Preferably, a connecting rack is installed on the outer wall of the driving rack facing the shaft rod, and the connecting rack is located at one end of the driving rack close to the guide member. A gear 2 meshing with the connecting rack is fixed on the outer wall of the shaft rod.

[0014] Preferably, a mounting groove is provided at the bottom of the fixed plate, and an extrusion piece is provided in the mounting groove. The extrusion piece and the fixed plate are arranged parallel in the horizontal direction. A pressure sensor is connected between the extrusion piece and the mounting groove. When the electric telescopic rod is retracted for pulling, the extrusion pressure at the bottom of the fixed plate is monitored by the pressure sensor. If the extrusion pressure exceeds the set threshold, it indicates that the yarn is over-tensioned and there is a risk of breakage, and the staff is reminded in time.

[0015] Preferably, a tension sensor is connected between the mounting frame and spring one, and the tension sensor is used to monitor the tension value of spring one in real time. During the pulling process, if the tension value monitored by the tension sensor decreases abnormally during the increase process or the increase amplitude decreases abnormally, the tension at the surface yarn position is too large, and the staff is reminded in time.

[0016] The beneficial effects of the present invention are:

[0017] 1. In the present invention, when the tension of the yarn is too large, the driving rack can slide relative to the electromagnetic block at the end of the electric telescopic rod, thereby slightly relaxing the yarn to avoid breakage due to excessive tension and the need for manual re-stretching, thereby improving the effectiveness of long-term pulling operations.

[0018] 2. In the present invention, through the setting of the overall pulling structure and the comprehensive judgment of the pressure sensor and the tension sensor, the excessive tension of the yarn during the pulling process can be adaptively adjusted and the judgment can be made in a timely and accurate manner to remind the staff.

[0019] 3. In the present invention, when not pulling, the elastic force of spring 2 is balanced with the elastic force of spring 1 and the tensioning force of the yarn to maintain the limiting effect of the yarn at the guide position, and to ensure the tensioning state of the yarn between the two pulling rollers to avoid looseness and entanglement affecting the next pulling operation, and the pulling of the yarn by the rear machine will cause the upward squeezing force of spring 2 and the movable plate to be greater. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of an adjustable pulling mechanism of a warp knitting machine proposed by the present invention;

[0021] Figure 2 This is a schematic diagram of the distribution structure of the guide member, rotating frame and guide roller of the adjustable pulling mechanism of the warp knitting machine proposed by the present invention;

[0022] Figure 3 This is a schematic structural diagram of a rotating frame and a pulling roller of an adjustable pulling mechanism of a warp knitting machine proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the position structure of a drive rack of an adjustable pulling mechanism of a warp knitting machine proposed by the present invention;

[0024] Figure 5 This is a schematic diagram of the electromagnetic block and slide position structure of an adjustable pulling mechanism of a warp knitting machine proposed by the present invention;

[0025] Figure 6 This is a schematic diagram of the position structure of a limit groove of an adjustable pulling mechanism of a warp knitting machine proposed by the present invention;

[0026] Figure 7 This is a schematic diagram of the guide structure of an adjustable pulling mechanism of a warp knitting machine proposed by the present invention;

[0027] Figure 8 This is a schematic diagram of the position structure of a movable plate of an adjustable pulling mechanism of a warp knitting machine proposed by the present invention;

[0028] Figure 9 This is a schematic diagram of the internal structure of a sliding sleeve housing of an adjustable pulling mechanism of a warp knitting machine proposed by the present invention.

[0029] In the figure: 1 mounting frame, 2 guide member, 3 guide roller, 4 rotating frame, 401 rotating shaft, 5 pulling roller, 6 ring gear, 7 electric control telescopic rod, 8 driving rack, 801 slide groove, 9 fixed seat, 10 electromagnetic block, 11 spring 1, 12 limit groove 1, 13 limit rod 1, 14 limit plate 1, 15 fixed plate, 16 movable plate, 161 limit rod 2, 17 limit groove 2, 18 sliding sleeve housing, 181 sliding sleeve cavity, 19 movable rack, 191 slider, 20 spring 2, 21 shaft rod, 22 connecting rack, 23 gear 2, 24 gear 1. DETAILED DESCRIPTION

[0030] Example 1: Reference Figure 1-Figure 7, an adjustable pulling mechanism of a warp knitting machine, comprising a mounting frame 1, two guide members 2 are provided on one side of the mounting frame 1, two guide rollers 3 are provided on the other side of the mounting frame 1 away from the guide members 2, a rotating frame 4 is rotatably provided at the middle position of both ends of the mounting frame 1, a rotating shaft 401 is fixed at the middle position of the end of the two rotating frames 4 away from each other, a rotating hole corresponding to the position of the rotating shaft 401 is opened on the mounting frame 1, two pulling rollers 5 are fixed between the two rotating frames 4, the two pulling rollers 5 are horizontally placed and arranged parallel to each other, the two ends of the pulling roller 5 are fixed to the same end corresponding to the two rotating frames 4, and the yarn enters from between the two guide members 2 The pulley enters, passes over the pulling roller 5 close to the guide member 2, then passes under the pulling roller 5 close to the guide roller 3, and is sent out from between the two guide rollers 3. A ring gear 6 is fixed to the outer wall of one of the rotating frames 4 close to the pulling roller 5. The ring gear 6 covers the two pulling rollers 5. The circumferential outer wall of the ring gear 6 is engaged with a horizontally extending drive rack 8. The drive rack 8 is provided with an electric telescopic rod 7 at a position away from the ring gear 6. The electric telescopic rod 7 is arranged parallel to the drive rack 8. The telescopic end of the electric telescopic rod 7 is installed with a fixed seat 9, and an electromagnetic block 10 is installed on the fixed seat 9. The outer wall of the drive rack 8 corresponds to the electromagnetic block 10. The position of the electromagnetic block 10 is provided with a chute 801, and the outer wall of the electromagnetic block 10 away from the fixed seat 9 is in contact with the inner wall of the chute 801. The length of the chute 801 is greater than the length of the electromagnetic block 10. After the electromagnetic block 10 is energized, it is magnetically adsorbed with the inner wall of the chute 801. When in use, the electromagnetic block 10 is energized to make the driving rack 8 move horizontally with the extension and contraction of the electric telescopic rod 7. The engagement between the driving rack 8 and the ring gear 6 is utilized to realize the clockwise deflection of the ring gear 6, the rotating frame 4 and the two pulling rollers 5 around the rotating shaft 401, and the yarn close to the guide roller 3 is fixed between the machine and the yarn close to the guide part 2 is relaxed, thereby realizing the pulling operation and passing The electric telescopic rod 7 adjusts the telescopic distance so that the pulling length can be adjusted each time. In addition, during long-term use, if the yarn is entangled with the winding drum near the guide member 2 and is not kept relaxed, as the two pulling rollers 5 rotate and the yarn is gradually tightened, the electromagnetic block 10 and the slide groove 801 are set to have a sliding distance. When the tension of the yarn is too large, the magnetic attraction can be overcome, and the driving rack 8 can slide relative to the electromagnetic block 10 at the end of the electric telescopic rod 7, thereby slightly relaxing the yarn to avoid breakage due to excessive tension and the need for manual re-pulling, thereby improving the effectiveness of long-term pulling operations.

[0031] It should be noted that: according to the required pulling distance, the rotating frame 4 is rotated to the maximum position in advance, and the two ends of the yarn or detection line are pulled to the preset maximum tension to correspond to the corresponding tensioning force, and then the electromagnetic attraction of the electromagnetic block 10 is gradually reduced until slippage occurs between the drive rack 8 and the electromagnetic block 10, so as to choose to use the corresponding electromagnetic attraction in the actual pulling process; thus, through the above-mentioned pulling structure setting, the corresponding electromagnetic attraction of the electromagnetic block 10 when working can be pre-adjusted according to the adaptability of different yarns to tensioning force and different pulling distances, so as to ensure the operating effect of sliding and relaxing between the drive rack 8 and the electromagnetic block 10 before over-tensioning, thereby improving the applicability of the pulling mechanism through adjustable settings.

[0032] In the present invention, a limiting groove 12 is provided at a position corresponding to the end face of the mounting frame 1 and the driving rack 8, and two limiting rods 13 are fixed to the driving rack 8 in the direction of the limiting groove 12. The limiting rods 13 are slidably connected to the inner wall of the limiting groove 12, and a limiting plate 14 is fixed between the ends of the two limiting rods 13 away from the driving rack 8 to ensure the stability of the horizontal movement of the driving rack 8 when the electromagnetic block 10 is not magnetically attracted to the driving rack 8.

[0033] In the present invention, the driving rack 8 is located below the ring gear 6, and the electric telescopic rod 7 is located below the driving rack 8. A spring 11 is connected between the end of the driving rack 8 facing the guide roller 3 and the mounting frame 1, which enables the driving rack 8 to have a reset ability while maintaining the mobility of the driving rack 8.

[0034] In the present invention, the two guide members 2 are provided with a fixed plate 15 and a movable plate 16, and the fixed plate 15 is located above the movable plate 16. Both sides of the fixed plate 15 and the movable plate 16 are arranged to be an arc structure that arches outward, and the two ends of the fixed plate 15 are fixedly connected to the mounting frame 1, and two limit rods 161 are installed at both ends of the movable plate 16. The mounting frame 1 is provided with a vertically extending limit groove 17 at the corresponding position of the limit rod 161. The outer wall of the limit rod 161 is located at both ends of the limit groove 17, and the limit plate 2 is fixed. A jacking assembly is connected under the movable plate 16. During the pulling process, the jacking assembly and the movable plate 16 descend and are supported and limited by the fixed plate 15. After the pulling is completed, when it is placed normally, the movable plate 16 squeezes the yarn upward and limits it between the fixed plate 15, so as to avoid the yarn at the connection machine position pulling the yarn normally placed at the reel position to cause looseness, thereby ensuring the effectiveness of the interval pulling operation during long-term work.

[0035] In the present invention, a mounting groove is provided at the bottom of the fixed plate 15, and an extrusion piece is provided in the mounting groove. The extrusion piece and the fixed plate 15 are arranged parallel to each other in the horizontal direction. A pressure sensor is connected between the extrusion piece and the mounting groove. When the electric telescopic rod 7 is retracted for pulling, the extrusion pressure at the bottom of the fixed plate 15 is monitored by the pressure sensor. If the extrusion pressure exceeds the set threshold, it indicates that the yarn is over-tensioned and there is a risk of breaking, and the staff is reminded to adjust or check in time. It should be noted that the threshold can be monitored by continuously increasing the tension at both ends of the yarn until it breaks, and the vertical pressure that is smaller than the maximum extrusion pressure is selected as the threshold.

[0036] In the present invention, a tension sensor is connected between the mounting frame 1 and the spring 11. The tension sensor is used to monitor the tension value of the spring 11 in real time. During the pulling process, if the tension value monitored by the tension sensor decreases abnormally during the increase process or the increase amplitude decreases abnormally, it indicates that slippage occurs between the drive rack 8 and the electromagnetic block 10, that is, the tension force at the surface yarn position is too large, and it is necessary to stop pulling in time or remind the staff to adjust or check; thereby, through the setting of the overall pulling structure and the comprehensive judgment of the pressure sensor and the tension sensor, the excessive tension of the yarn during the pulling process can be adaptively adjusted and timely and accurate judgment can be made to remind the staff.

[0037] Example 2: Reference Figures 1-9, an adjustable pulling mechanism of a warp knitting machine, based on Example 1, a lifting assembly is provided with a sliding shell 18 fixed to the middle position of the bottom of the movable plate 16, the sliding shell 18 extends vertically downward, and a moving rack 19 is slidably connected in the sliding shell 18. The strips and tooth blocks of the moving rack 19 can be extended into the sliding shell 18, and a slider 191 is fixed to the top of the moving rack 19, which slides in contact with the inner wall of the sliding shell 18. A spring 20 is connected between the top of the moving rack 19 and the top inner wall of the sliding shell 18. The lifting assembly is also provided with a shaft rod 21, and both ends of the shaft rod 21 are connected to the mounting The shaft 21 is rotatably connected to the frame 1, the shaft 21 is located below the electric telescopic rod 7, the shaft 21 is located on the side of the guide 2 close to the pulling roller 5, the outer wall of the shaft 21 is fixed with a gear 24 that meshes with the mobile rack 19, the outer wall of the driving rack 8 facing the shaft 21 is installed with a connecting rack 22, the connecting rack 22 is located at one end of the driving rack 8 close to the guide 2, an extension rod is installed between the connecting rack 22 and the driving rack 8, the connecting rack 22 is located above the shaft 21, and the outer wall of the shaft 21 is fixed with a gear 23 that meshes with the connecting rack 22. In the set state, the electric telescopic rod 7 is in the extended state and the electromagnetic block 10 is not energized, the rotating frame 4 is in the tilted state and the rotating frame 4 is tilted upward toward the guide member 2. At this time, the connecting rack 22 and the gear 2 23 are engaged, and the spring 11 connected to the drive rack 8 is in a stretched state to pull the drive rack 8 toward the guide roller 3. Through the transmission of the gear 2 23, the shaft 21 and the gear 1 24, the upward force is applied to the mobile rack 19, and at this time, the spring 20 above the mobile rack 19 is in a compressed state to squeeze the movable plate 16 upward to press the yarn connected to the winding drum. The thread is limited and fixed, so that the elastic force of the spring 20 is balanced with the elastic force of the spring 11 and the tension of the yarn, so as to maintain the limiting effect of the yarn at the position of the guide member 2, and ensure the tension state of the yarn between the two pulling rollers 5 to avoid looseness and entanglement affecting the next pulling operation, and adaptively adjust the activity of the pulling roller as the rear machine operates. At the same time, when not pulling, the rear machine pulling the yarn will increase the upward squeezing force of the spring 20 and the movable plate 16, thereby avoiding affecting the yarn at the position of the winding drum, thereby further improving the effectiveness and stability of the continuous interval pulling operation;

[0038] During the pulling operation, the electric telescopic rod 7 contracts to move the driving rack 8 toward the guide member 2, so that the short-distance connecting rack 22 quickly leaves the gear 2 23. At this time, there is no force applied outside the shaft 21. Under the action of gravity, the movable rack 19 falls naturally, and the spring 2 20 is in a naturally extended state, loosening the yarn between the movable plate 16 and the fixed plate 15 to ensure the effectiveness of the pulling operation.

[0039] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An adjustable pulling mechanism for a warp knitting machine, comprising a mounting frame (1), wherein one side of the mounting frame (1) is provided with two guide members (2), and the other side of the mounting frame (1) is provided with two guide rollers (3), characterized in that: A rotating frame (4) is rotatably provided at the middle position of both ends of the mounting frame (1), and two pulling rollers (5) are fixed between the two rotating frames (4). A ring gear (6) is fixed to the outer wall of one of the rotating frames (4), and a horizontally extending driving rack (8) is engaged with the circumferential outer wall of the ring gear (6). An electric telescopic rod (7) is provided at a position of the driving rack (8) away from the ring gear (6). The electric telescopic rod (7) and the driving rack (8) are arranged in parallel. The telescopic end of the electric telescopic rod (7) is installed An electromagnetic block (10) is provided, and a chute (801) is provided at a position corresponding to the outer wall of the driving rack (8) and the electromagnetic block (10). The length of the chute (801) is greater than the length of the electromagnetic block (10). When the electromagnetic block (10) is energized, it is magnetically adsorbed to the inner wall of the chute (801). When the tension of the yarn is too large, the magnetic attraction can be overcome, and the driving rack (8) can slide relative to the electromagnetic block (10) at the end of the electric telescopic rod (7), thereby slightly relaxing the yarn to avoid excessive tension and breakage.

2. The adjustable pulling mechanism of a warp knitting machine according to claim 1, characterized in that: A limiting groove (12) is provided at a position corresponding to the end surface of the mounting frame (1) and the driving rack (8); two limiting rods (13) are fixed to the driving rack (8) in the direction of the limiting groove (12); the limiting rods (13) are slidably connected to the inner wall of the limiting groove (12); and a limiting plate (14) is fixed between the ends of the two limiting rods (13) away from the driving rack (8).

3. The adjustable pulling mechanism of a warp knitting machine according to any one of claims 1 to 2, characterized in that: The driving rack (8) is located below the ring gear (6), and a spring (11) is connected between the end of the driving rack (8) facing the guide roller (3) and the mounting frame (1).

4. The adjustable pulling mechanism of a warp knitting machine according to claim 3, characterized in that: The two guide members (2) are provided with a fixed plate (15) and a movable plate (16), the fixed plate (15) is located above the movable plate (16), and both sides of the fixed plate (15) and the movable plate (16) are provided with an outwardly arched arc structure.

5. The adjustable pulling mechanism of a warp knitting machine according to claim 4, characterized in that: The two ends of the fixed plate (15) are fixedly connected to the mounting frame (1), and two limiting rods (161) are installed at both ends of the movable plate (16). A vertically extending limiting groove (17) is opened at the position corresponding to the limiting rod (161) of the mounting frame (1). The outer wall of the limiting rod (161) is located at both ends of the limiting groove (17). The limiting plate (1) is fixed, and a lifting component is connected below the movable plate (16).

6. The adjustable pulling mechanism of a warp knitting machine according to claim 5, characterized in that: The lifting assembly is provided with a sliding shell (18) fixed at the middle position of the bottom of the movable plate (16), the sliding shell (18) is extended vertically downward, a movable rack (19) is slidably connected inside the sliding shell (18), and a spring 2 (20) is connected between the top of the movable rack (19) and the top inner wall of the sliding shell (18).

7. The adjustable pulling mechanism of a warp knitting machine according to claim 6, characterized in that: The lifting assembly is further provided with a shaft (21), both ends of which are rotatably connected to the mounting frame (1), the shaft (21) being located below the electric telescopic rod (7), and a gear (24) meshing with the movable rack (19) being fixed to the outer wall of the shaft (21).

8. The adjustable pulling mechanism of a warp knitting machine according to claim 7, characterized in that: A connecting rack (22) is installed on the outer wall of the driving rack (8) facing the shaft (21). The connecting rack (22) is located at one end of the driving rack (8) close to the guide member (2). A gear 2 (23) meshing with the connecting rack (22) is fixed on the outer wall of the shaft (21).

9. The adjustable pulling mechanism of a warp knitting machine according to claim 4, characterized in that: The bottom of the fixed plate (15) is provided with a mounting groove, and an extrusion sheet is provided in the mounting groove. The extrusion sheet and the fixed plate (15) are arranged in parallel in the horizontal direction. A pressure sensor is connected between the extrusion sheet and the mounting groove. When the electric telescopic rod (7) is retracted for pulling, the extrusion pressure at the bottom of the fixed plate (15) is monitored by the pressure sensor. If the extrusion pressure exceeds the set threshold, it indicates that the yarn is over-tensioned and there is a risk of breaking, and the staff is promptly reminded.

10. The adjustable pulling mechanism of a warp knitting machine according to claim 9, characterized in that: A tension sensor is connected between the mounting frame (1) and the spring one (11). The tension sensor is used to monitor the tension value of the spring one (11) in real time. During the pulling process, if the tension value monitored by the tension sensor decreases abnormally during the increase process or the increase amplitude decreases abnormally, the tension at the surface yarn position is too large, and the staff is promptly reminded.

Images