A swing needle bar mechanism for a crochet machine

Abstract

The utility model provides a kind of swing needle bar mechanism of hook knitting machine.The swing needle bar mechanism of hook knitting machine, including reduction gearbox, the output shaft of reduction gearbox is fixedly connected with rotating disc by vertical rod, the upper surface of rotating disc is fixedly connected with containing box, the inner chamber of containing box is provided with the moving block moving along horizontal direction, the top vertical fixed connection of moving block has connecting rod, the top end of connecting rod is movably extended to the outside of containing box.The swing needle bar mechanism of hook knitting machine provided by the utility model, by adjusting the position of moving block in the inner chamber of containing box, then using the locking and fixing of clamping structure to moving block, and then adjusting the relative position of the inner end of articulated rod on the upper surface of rotating disc, and then the swing distance of needle bar structure during subsequent work can be adjusted, which is beneficial to produce different knitted products, without replacing needle bar structure, reducing the labor intensity of workers, improving the production adaptability of device, and facilitating knitting production and processing use.

Description

Technical Field

[0001] This utility model relates to the field of needle bar mechanisms, and more particularly to a swing needle bar mechanism for a crochet machine. Background Technology

[0002] A crochet knitting machine with its needle bed and guide bars arranged horizontally, and a weft guide bar arranged vertically above the needle bed, is a variant of the narrow-width Raschel warp knitting machine. It uses latch needles or self-closing crochet needles to knit the warp yarns fed into the guide bars into loops, while the weft yarns are fed into the weft guide bars and held in the loops of the ground weave. It is often used to produce narrow-width warp-knitted fabrics such as lace and elastic bands.

[0003] Chinese patent CN118668376A discloses a driving mechanism for a oscillating needle bar in a crochet machine. This technical solution uses a protrusion on an annular block in conjunction with rollers to oscillate a oscillating plate. The oscillating plate is connected to the needle bar via a connecting rod, allowing the needle bar to move left and right with the oscillating plate. The rollers position the upper and lower parts of the annular block, enabling the oscillating plate to oscillate at a high frequency, thereby improving the production efficiency of the crochet machine.

[0004] However, the swinging needle bar mechanism of this crochet machine has a fixed swinging distance during use, which means that the crochet machine can only produce products of specific specifications, such as fabrics with fixed stitch spacing or buttonholes of fixed size. When it is necessary to produce products of different specifications, the needle bar mechanism with different swinging distances must be manually replaced, which reduces production efficiency and is not conducive to knitting work.

[0005] Therefore, it is necessary to provide a swing needle bar mechanism for a crochet machine to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides a swing needle bar mechanism for a crochet machine, which solves the problem that crochet machines can only produce products of specific specifications, such as fabrics with fixed stitch spacing or button holes of fixed size. When it is necessary to produce products of different specifications, the needle bar mechanism with different swing distances must be manually changed.

[0007] To solve the above-mentioned technical problems, the present invention provides a oscillating needle bar mechanism for a crochet machine, including a reduction gearbox. The output shaft of the reduction gearbox is fixedly connected to a rotating disk via a vertical rod. A receiving box is fixedly connected to the upper surface of the rotating disk. A moving block that moves horizontally is provided in the inner cavity of the receiving box. A connecting rod is vertically fixedly connected to the top of the moving block. The top end of the connecting rod extends movably to the outside of the receiving box and is fixedly connected to a moving platform. A transmission rod is vertically fixedly connected to the surface of the moving platform. A cylinder is rotatably sleeved on the transmission rod. A hinge rod is fixedly connected to the surface of the cylinder. A needle bar structure is provided at the other end of the hinge rod. A locking structure for locking the moving block after it has moved is provided on the surface of the receiving box.

[0008] Preferably, the input end of the gearbox is fixedly connected to a connecting shaft, and the surface of the connecting shaft is provided with a key.

[0009] Preferably, the top of the container has an opening that is distributed along its length, and the top end of the connecting rod extends through the interior of the opening to the exterior of the container.

[0010] Preferably, a limit block is detachably provided at the top of the transmission rod.

[0011] Preferably, the engaging structure includes a movable rack plate and a snap-fit ​​rack plate capable of engaging with the movable rack plate. The movable rack plate is fixedly connected to the side wall of the movable block. The snap-fit ​​rack plate is slidably disposed in the inner cavity of the receiving box in the horizontal direction. A bolt is threadedly connected to the side wall of the receiving box. The inner end of the bolt extends into the inner cavity of the receiving box and is rotatably connected to the side wall of the snap-fit ​​rack plate. A torsion handle is fixedly connected to the outer end of the bolt.

[0012] Preferably, a limiting disc is fixedly connected to the surface of the torsion handle, and a screw is provided on the side wall of the limiting disc. The side wall of the receiving box is provided with a plurality of internal threaded holes that are adapted to the screws, and the plurality of internal threaded holes are evenly distributed in a ring with the bolt's central axis as the center.

[0013] Preferably, the needle bar structure includes a needle bar body, one end of which is rotatably connected to the other end of the hinge rod via a rotating seat, and both ends of the surface of the needle bar body are slidably fitted with limiting sleeves, and the bottom of the limiting sleeves is fixedly connected to a mounting seat.

[0014] Compared with related technologies, the oscillating needle bar mechanism of the crochet machine provided by this utility model has the following characteristics:

[0015] Beneficial effects:

[0016] This invention provides a swing needle bar mechanism for a crochet machine. After the rotating disc is driven to rotate by a reduction gearbox, the receiving box rotates. The connection of the moving block, connecting rod, and moving platform allows the hinge rod to change its tilt angle, thus enabling the needle bar structure to swing. When the swing distance needs adjustment, the moving platform can be pushed or pulled to adjust the position of the moving block within the receiving box. After the moving block is locked in place using a locking structure, the relative position of the inner end of the hinge rod to the upper surface of the rotating disc can be adjusted. This allows for adjustment of the swing distance of the needle bar structure during subsequent operations, facilitating the production of different woven items without requiring needle bar replacement, reducing the workload of workers, improving the device's production adaptability, and benefiting woven production and processing. Attached Figure Description

[0017] Figure 1 A schematic diagram of a preferred embodiment of the swing needle bar mechanism of the crochet machine provided by this utility model;

[0018] Figure 2 for Figure 1 The diagram shows the structural schematic of the engagement structure.

[0019] Figure 3 for Figure 1 The diagram shows the front view of the structure.

[0020] Figure 4 for Figure 1 The diagram shows the structure of the receiving box and the internal threaded hole.

[0021] The following are the labels in the diagram: 1. Gearbox; 2. Connecting shaft; 3. Vertical rod; 4. Rotating disc; 5. Receiving box; 6. Moving block; 7. Connecting rod; 8. Moving platform; 9. Transmission rod; 10. Cylinder; 11. Limiting block; 12. Hinge rod; 13. Rotating seat; 14. Needle bar body; 15. Limiting sleeve; 16. Mounting seat; 17. Movable rack plate; 18. Torque handle; 19. Bolt; 20. Snap-fit ​​rack plate; 21. Limiting disc; 22. Screw; 23. Internal threaded hole; 24. Movable port. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please refer to the following: Figure 1 , Figure 2 , Figure 3 and Figure 4 The oscillating needle bar mechanism of the crochet machine includes a reduction gearbox 1. The output shaft of the reduction gearbox 1 is fixedly connected to a rotating disk 4 via a vertical rod 3. A receiving box 5 is fixedly connected to the upper surface of the rotating disk 4. A moving block 6 that moves in the horizontal direction is provided in the inner cavity of the receiving box 5.

[0024] A connecting rod 7 is vertically fixedly connected to the top of the movable block 6. The top end of the connecting rod 7 extends movably to the outside of the receiving box 5 and is fixedly connected to a movable platform 8. A transmission rod 9 is vertically fixedly connected to the surface of the movable platform 8. A cylinder 10 is sleeved on the rotating part of the transmission rod 9. A hinge rod 12 is fixedly connected to the surface of the cylinder 10.

[0025] The other end of the hinge rod 12 is provided with a pin bar structure, and the surface of the receiving box 5 is provided with a locking structure for locking the moving block 6 after it is moved.

[0026] After the gearbox 1 drives the rotating disk 4 to rotate, it can drive the receiving box 5 to rotate. By using the connection of the moving block 6, the connecting rod 7 and the moving table 8, the hinge rod 12 can be driven to change the tilt angle, thereby making the needle bar structure swing.

[0027] When it is necessary to adjust the swing distance, the moving platform 8 can be pushed and pulled to adjust the position of the moving block 6 in the inner cavity of the receiving box 5. After the moving block 6 is locked and fixed by the locking structure, the relative position of the inner end of the hinge rod 12 to the upper surface of the rotating disk 4 can be adjusted, thereby adjusting the swing distance of the needle bar structure during subsequent work.

[0028] It facilitates the production of various knitted items without the need to change the needle bar structure, reducing the workload of workers, improving the production adaptability of the equipment, and making it suitable for knitting production and processing.

[0029] The input end of the gearbox 1 is fixedly connected to a connecting shaft 2. The surface of the connecting shaft 2 is provided with a key, which facilitates the connection and use of external drive equipment with the gearbox 1.

[0030] The top of the container 5 has an opening 24 that is distributed along its length, and the top of the connecting rod 7 extends from the inside of the opening 24 to the outside of the container 5.

[0031] A limit block 11 is installed at the top of the transmission rod 9. After removing the limit block 11, it is convenient to replace, inspect and maintain the hinge rod 12 and the needle rod structure.

[0032] The engaging structure includes a movable rack plate 17 and a snap-fit ​​rack plate 20 that can engage with the movable rack plate 17. The movable rack plate 17 is fixedly connected to the side wall of the movable block 6, and the snap-fit ​​rack plate 20 is slidably disposed in the inner cavity of the receiving box 5 in the horizontal direction.

[0033] The side wall of the receiving box 5 is threaded with a bolt 19. The inner end of the bolt 19 extends into the inner cavity of the receiving box 5 and is rotatably connected to the side wall of the snap-fit ​​rack plate 20. The outer end of the bolt 19 is fixedly connected with a torsion handle 18.

[0034] During the movement of the movable block 6, the movable rack plate 17 is moved together. By turning the torsion handle 18, the bolt 19 drives the snap-fit ​​rack plate 20 to move until it engages with the movable rack plate 17, thus locking and fixing the position of the movable block 6 after it has moved.

[0035] The surface of the torsion handle 18 is fixedly connected to the limiting disc 21. The side wall of the limiting disc 21 is provided with screws 22. The side wall of the receiving box 5 is provided with several internal threaded holes 23 that are adapted to the screws 22. The multiple internal threaded holes 23 are evenly distributed in a ring with the central axis of the bolt 19 as the center.

[0036] During the rotation of the torsion handle 18, the screw 22 is driven to rotate together through the limiting disc 21. After the torsion handle 18 rotates, the screw 22 can be twisted so that the inner end of the screw 22 is embedded in the corresponding internal thread hole 23, which can fix the limiting disc 21 and lock the torsion handle 18 after rotation, thereby improving the stability of locking after the moving block 6 moves.

[0037] The needle bar structure includes a needle bar body 14. One end of the needle bar body 14 is rotatably connected to the other end of the hinge rod 12 via a rotating seat 13. Both ends of the surface of the needle bar body 14 are slidably fitted with limiting sleeves 15, and the bottom of the limiting sleeves 15 is fixedly connected with a mounting seat 16.

[0038] The working principle of the swing needle bar mechanism of the crochet machine provided by this utility model is as follows:

[0039] The external drive device can be connected to the gearbox 1 via the connecting shaft 2. After the gearbox 1 drives the rotating disk 4 to rotate, it can drive the receiving box 5 to rotate. By connecting the moving block 6, the connecting rod 7 and the moving table 8, the hinge rod 12 can be driven to change the tilt angle, thereby causing the needle bar body 14 and the two limiting sleeves 15 to swing. When it is necessary to adjust the swing distance, the moving table 8 can be pushed and pulled to adjust the position of the moving block 6 in the cavity of the receiving box 5. After locking and fixing the moving block 6 with the locking structure, the relative position of the inner end of the hinge rod 12 to the upper surface of the rotating disk 4 can be adjusted, thereby adjusting the swing distance of the needle bar structure during subsequent work.

[0040] Compared with related technologies, the oscillating needle bar mechanism of the crochet machine provided by this utility model has the following characteristics:

[0041] Beneficial effects:

[0042] After the rotating disk 4 is driven to rotate by the reduction gearbox 1, the receiving box 5 will rotate. By connecting the moving block 6, the connecting rod 7 and the moving table 8, the hinge rod 12 can be driven to change the tilt angle, thereby causing the needle bar structure to swing. When it is necessary to adjust the swing distance, the moving table 8 can be pushed or pulled to adjust the position of the moving block 6 in the inner cavity of the receiving box 5. After locking and fixing the moving block 6 with the locking structure, the relative position of the inner end of the hinge rod 12 to the upper surface of the rotating disk 4 can be adjusted. This allows for adjustment of the swing distance of the needle bar structure during subsequent work, which is beneficial for producing different knitted items without the need to replace the needle bar structure, reducing the workload of workers, improving the production adaptability of the device, and facilitating the use of knitting production and processing.

[0043] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A oscillating needle bar mechanism for a crochet machine, comprising a reduction gearbox (1), characterized in that: The output shaft of the gearbox (1) is fixedly connected to a rotating disk (4) via a vertical rod (3). A receiving box (5) is fixedly connected to the upper surface of the rotating disk (4). A moving block (6) that moves horizontally is provided in the inner cavity of the receiving box (5). A connecting rod (7) is fixedly connected vertically to the top of the moving block (6). The top end of the connecting rod (7) extends movably to the outside of the receiving box (5) and is fixedly connected to a moving platform (8). A transmission rod (9) is fixedly connected vertically to the surface of the moving platform (8). A cylinder (10) is fitted around the rotating part of the transmission rod (9). A hinge rod (12) is fixedly connected to the surface of the cylinder (10). A pin rod structure is provided at the other end of the hinge rod (12). A locking structure for locking the moving block (6) after it moves is provided on the surface of the receiving box (5).

2. The oscillating needle bar mechanism of the crochet machine according to claim 1, characterized in that, The input end of the gearbox (1) is fixedly connected to a connecting shaft (2), and the surface of the connecting shaft (2) is provided with a key.

3. The oscillating needle bar mechanism of the crochet machine according to claim 1, characterized in that, The top of the container (5) has an opening (24) distributed along its length, and the top end of the connecting rod (7) extends through the interior of the opening (24) to the exterior of the container (5).

4. The oscillating needle bar mechanism of the crochet machine according to claim 1, characterized in that, A limit block (11) is detachably installed on the top of the transmission rod (9).

5. The oscillating needle bar mechanism of the crochet machine according to claim 1, characterized in that, The engaging structure includes a movable rack plate (17) and a snap-fit ​​rack plate (20) capable of engaging with the movable rack plate (17). The movable rack plate (17) is fixedly connected to the side wall of the movable block (6). The snap-fit ​​rack plate (20) is slidably disposed in the inner cavity of the receiving box (5) in the horizontal direction. The side wall of the receiving box (5) is threadedly connected with a bolt (19). The inner end of the bolt (19) extends into the inner cavity of the receiving box (5) and is rotatably connected to the side wall of the snap-fit ​​rack plate (20). The outer end of the bolt (19) is fixedly connected with a torsion handle (18).

6. The oscillating needle bar mechanism of the crochet machine according to claim 5, characterized in that, The surface of the torsion handle (18) is fixedly connected to a limiting disc (21). The side wall of the limiting disc (21) is provided with a screw (22). The side wall of the receiving box (5) is provided with a plurality of internal threaded holes (23) that are adapted to the screw (22). The plurality of internal threaded holes (23) are evenly spaced in a ring with the central axis of the bolt (19) as the center.

7. The oscillating needle bar mechanism of the crochet machine according to claim 1, characterized in that, The needle bar structure includes a needle bar body (14), one end of which is rotatably connected to the other end of the hinge rod (12) via a rotating seat (13). Both ends of the surface of the needle bar body (14) are slidably fitted with limiting sleeves (15), and the bottom of the limiting sleeves (15) is fixedly connected with a mounting seat (16).

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