A single-leg spring needle and spring needle fixing structure for computerized flat knitting machines

Abstract

This utility model discloses a single-leg spring needle and its fixing structure for a computerized flat knitting machine. The spring needle body is slidably inserted into a needle groove in a needle plate. The spring needle body includes a needle shank, a needle head located at the upper part of the needle shank, and a needle tail located at the lower end of the needle shank. The needle shank, needle head, and needle tail are integrally formed in a straight line. A protruding abutment is provided on the right side of the needle shank for engaging with a second steel strip in the needle plate. The abutment protrusion and the needle head and needle tail form a first clearance recess and a second clearance recess. This utility model uses a single-leg design, effectively simplifying the spring needle structure, reducing assembly difficulty, and extending service life. Furthermore, the overall height is reduced, which is beneficial for compact equipment design.

Description

Technical Field

[0001] This utility model relates to the technical field of computerized flat knitting machines, and in particular to a single-leg spring needle and spring needle fixing structure for computerized flat knitting machines. Background Technology

[0002] Currently, most spring needles used in computerized flat knitting machines are of a double-legged structure, which has revealed some shortcomings in actual assembly and operation. For example, a Chinese utility model patent (CN222908225U) discloses a needle plate for a flat knitting machine with a spring plate heel and a spring foot. The spring foot is connected to the lower middle position of the spring needle, with its lowest point lower than the lowest point of the spring needle. After installation in the needle slot, the lower end of the spring needle abuts against the rear plate heel of the needle selector, one side of the spring foot abuts against the inner wall of the needle slot, the spring plate heel is higher than the top of the needle selector, and the rear side of the spring plate heel abuts against one side of the long needle. There is a gap between the spring foot and the spring needle; this design allows the spring foot to generate elastic force on the spring needle, enabling it to function normally. This double-legged spring needle structure is relatively complex. When assembling with components such as the needle bed of the computerized flat knitting machine, precise positioning and installation of the two legs are required, increasing assembly difficulty and time costs, and reducing production efficiency. On the other hand, during long-term reciprocating motion, uneven force distribution on the two legs of this type of spring needle can easily lead to problems such as skewness, jamming, or even breakage. Furthermore, the spring legs increase the overall height of the spring needle, thus requiring an increase in the height of the needle plate to ensure its proper functioning. Utility Model Content

[0003] The technical problem to be solved by this utility model embodiment is to provide a single-leg spring needle and spring needle fixing structure for computerized flat knitting machines. The single-leg design effectively simplifies the spring needle structure, reduces assembly difficulty, and extends service life. Furthermore, the overall height is reduced, which is beneficial for compact equipment design.

[0004] To achieve the above objectives, this utility model discloses a single-leg spring needle for a computerized flat knitting machine, comprising a spring needle body, wherein the spring needle body is used to slide and insert into the needle groove of the needle plate;

[0005] The spring needle body includes a needle shaft, a needle head located on the upper part of the needle shaft, and a needle tail located at the lower end of the needle shaft. The needle shaft, needle head, and needle tail are integrally in a straight line.

[0006] The needle bar has an outwardly protruding abutment protrusion for engaging with the second steel bar in the needle plate, and the abutment protrusion of the needle bar forms a first clearance recess and a second clearance recess with the needle head and needle tail.

[0007] Furthermore, the lower end of the needle bar is provided with an elastic locking part, and a locking recess is formed between the locking part and the needle tail, so that the third steel bar can be locked into the locking recess.

[0008] Furthermore, the needle tail is provided with an arc-shaped locking position along the height direction.

[0009] Furthermore, the needle head is provided with a pressure plate that abuts against the long needle leg.

[0010] Furthermore, the needle head is provided with a spring plate heel that cooperates with the mountain plate.

[0011] Furthermore, the lower end face of the needle tail is an inclined guide slope, which slopes downward from left to right at an angle of 15°-30°.

[0012] Furthermore, the first and second recessed clearances are connected to the abutting protrusion by a rounded transition.

[0013] Furthermore, the depths of both the first and second clearance recesses are 0.8mm-1.2mm.

[0014] Furthermore, the cross-section of the needle bar is rectangular, with a width of 2.0mm-3.0mm.

[0015] Furthermore, the total length of the spring pin body is 50mm-60mm.

[0016] This utility model also provides a spring needle fixing structure, including the above-mentioned single-leg spring needle and an auxiliary pressure needle. The auxiliary pressure needle includes an auxiliary pressure needle body, which is disposed opposite to the spring needle body and is slidably inserted into the needle groove of the needle plate.

[0017] The auxiliary pressure needle body includes a pressure needle and an elastic pressure rod disposed at the lower end of the pressure needle. The upper part of the elastic pressure rod has a protrusion for abutting against the lower part of the spring needle body, and after abutting, the spring needle body presses against the third steel bar.

[0018] Furthermore, a hook is provided at the connection between the pressure needle and the elastic pressure rod for engaging with the fourth steel bar.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] (1) This utility model greatly simplifies the structure of the spring needle and reduces the overall height of the spring needle, which is conducive to the compact design of the equipment and reduces the assembly difficulty. At the same time, it reduces the contact area with the inner wall of the needle groove, reduces the frictional resistance when the spring needle slides in the needle groove, and makes the movement of the spring needle smoother, thereby improving the response speed and stability of the computer flat knitting machine during the knitting process. (2) In this embodiment, an abutting protrusion is provided on the right side of the needle bar, and a first clearance recess and a second clearance recess are formed between the abutting protrusion and the needle head and needle tail, which effectively optimizes the limiting fit structure between the spring needle and the steel strip in the needle plate. The abutting protrusion can accurately abut against the steel strip, ensuring the positioning stability of the spring needle during the working process, while the design of the first clearance recess and the second clearance recess cleverly provides installation and movement space for the steel strip and surrounding components, reducing wear caused by friction or collision, thereby extending the service life of the spring needle. (3) In this embodiment, the needle bar adopts an elastically designed snap-fit ​​part, which can restrict the steel strip between the snap-fit ​​recess and the arc-shaped snap-fit, so as to improve the structural stability of the spring needle after installation and reduce the possibility of the spring needle loosening and shifting. (4) This utility model uses the auxiliary pressure needle to continuously press the spring needle with its own rebound force, so that the arc-shaped recess always keeps in contact with the surface of the steel strip, avoiding lateral shaking of the spring needle during operation, effectively improving the stability of the spring needle working process, and reducing the occurrence of needle slippage and needle leakage during flat knitting. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of Example 1;

[0022] Figure 2 This is a schematic diagram of the single-leg spring pin in Example 1;

[0023] Figure 3 This is a schematic diagram of the overall structure of Example 2;

[0024] Figure 4 This is a schematic diagram of the single-leg spring pin in Example 2;

[0025] Figure 5 This is a schematic diagram of the overall structure of Example 3;

[0026] Figure 6 This is a schematic diagram of the auxiliary pressure needle in Example 3. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the following will provide a more detailed description of this utility model in conjunction with the accompanying drawings.

[0028] Example 1:

[0029] Reference Figure 1As shown, a single-leg spring needle for a computerized flat knitting machine includes a spring needle body 1. The needle plate of the computerized flat knitting machine is provided with a plurality of needle grooves spaced apart along the length direction. The spring needle body 1 is slidably inserted into the needle grooves of the needle plate. The installation method between the spring needle body and the needle plate is the prior art, and will not be repeated here.

[0030] Combination Figure 2 As shown, the spring needle body 1 includes a needle shank 11, a needle head 12, and a needle tail 13. The needle head 12 is located at the upper end of the needle shank 11, and the needle tail 13 is located at the lower end of the needle shank 11, so that the needle shank 11, the needle head 12, and the needle tail 13 are in a straight line. The needle head 12 has a protruding pressure plate 121 that abuts against the long needle leg. The needle head 12 also has a protruding spring plate heel 122 that cooperates with the cam plate. The lower end face of the needle tail 13 is an inclined guide slope that abuts against the rear plate heel of the selected needle leg. The guide slope slopes downward from left to right, and the slope angle is 15°-30°.

[0031] Furthermore, the right side of the needle bar 11 is provided with an abutting protrusion 111, and the needle tail 13 is provided with at least three arc-shaped locking positions 131 along the height direction, the three arc-shaped locking positions 131 corresponding to positions A, H and B of the mountain plate respectively.

[0032] Reference Figure 1 , Figure 2 As shown, the lower part of a traditional needle plate typically has a first steel bar 4A, a second steel bar 4B, and a third steel bar 4C. The first steel bar 4A and the second steel bar 4B abut against the abutment protrusions 111 of the needle head 12 and the needle shank 11, respectively. The third steel bar 4C cooperates with the arc-shaped locking position 131. Through the locking relationship between the arc-shaped locking position 131 and the third steel bar 4C, the spring needle body 1 can be positioned vertically and horizontally within the needle groove. In this embodiment, the three arc-shaped locking positions 131 on the right side of the needle tail 13 have an arc that matches the outer circumference of the third steel bar 4C. When the plate moves the spring needle body 1, the third steel bar 4C can stably embed into the arc-shaped locking positions 131 at different heights, thereby precisely controlling the lifting and lowering position of the spring needle body 1 and ensuring its accuracy and reliability when switching between positions A, H, and B.

[0033] Furthermore, the second steel bar 4B and the third steel bar 4C form a stable clamp on the lower front and rear sides of the spring needle body 1, further enhancing the structural stability of the spring needle body 1 during movement. This effectively limits the swaying of the spring needle, avoiding deviation caused by uneven force or vibration. This double-sided clamping design allows the spring needle to maintain a precise trajectory even during high-speed reciprocating motion, greatly reducing the risk of knitting failures caused by needle swaying and improving the overall knitting quality and production efficiency of the computerized flat knitting machine.

[0034] Compared to traditional double-legged spring needles, the single-legged structure design in this embodiment reduces the contact area with the inner wall of the needle groove, lowering the frictional resistance when the spring needle slides within the needle groove. This results in smoother movement of the spring needle, thereby improving the response speed and stability during the computerized flat knitting machine process. Simultaneously, the single-legged structure simplifies the overall construction of the spring needle, reducing the number of parts. This not only lowers the difficulty and cost of manufacturing but also makes assembly and maintenance of the spring needle more convenient.

[0035] In addition, the straight-line overall layout makes the force on the spring needle body more even. In long-term high-frequency reciprocating motion, it can effectively reduce stress concentration, extend the service life of the spring needle, and reduce the failure rate of the equipment.

[0036] Furthermore, the first clearance recess 112 and the second clearance recess 113 are formed between the abutting protrusion 111 of the needle bar 11 and the needle head 12 and the needle tail 13, which can effectively reduce the possibility of unnecessary contact and interference between the needle bar 11 and the steel bar or other components in the needle groove during the movement. Thus, based on the reduction of frictional resistance in the single-leg structure, the smoothness and flexibility of the spring needle movement are further improved, ensuring its accuracy and stability in high-speed reciprocating motion.

[0037] The first recess 112 and the second recess 113 are connected to the abutting protrusion 111 by a rounded transition. The depth of the first recess 112 and the second recess 113 is 0.8mm-1.2mm, which can effectively disperse the stress at the connection between the abutting protrusion 111 and the recess 113, avoid stress concentration points that may be generated by right angle transition, further enhance the overall strength and toughness of the spring pin body structure, further extend the service life of the spring pin, and ensure its structural stability and reliability during long-term use.

[0038] Preferably, the cross-section of the needle bar 11 is rectangular, with a width of 2.0mm-3.0mm, and more preferably 2.5mm. The total length of the spring needle body 1 is 50mm-60mm, and more preferably 60mm. This length is 8%-12% shorter than that of the existing double-leg spring needle, which reduces the overall weight of the spring needle body 1 by about 10%. This not only reduces the manufacturing cost but also reduces the load on the computerized flat knitting machine when it is running at high speed, and helps to reduce the energy consumption and operating noise of the equipment.

[0039] Furthermore, the height and width dimensions can be appropriately reduced during the design of the needle plate, allowing the entire needle plate to fit into a smaller space during installation, effectively reducing the overall height of the computerized flat knitting machine and effectively improving the compactness of the internal structure of the equipment.

[0040] Example 2:

[0041] Reference Figures 2-4 As shown, the difference between this embodiment and Embodiment 1 is that the lower end of the needle bar 11 is provided with an elastic snap-fit ​​part 14, so that a snap-fit ​​recess 141 is formed between the snap-fit ​​part 14 and the needle tail 13. When the spring needle body 1 is assembled onto the needle plate, the third steel bar 4C will snap into the snap-fit ​​recess 141 and match the arc-shaped snap-fit ​​position 131. The elastic snap-fit ​​part 14 can deform under the compression of the third steel bar 4C, which facilitates the smooth snap-fit ​​of the third steel bar 4C into the snap-fit ​​recess 141. After snapping into the arc-shaped snap-fit ​​position 131, the snap-fit ​​part 14 rebounds, thereby firmly restricting the third steel bar 4C between the snap-fit ​​recess 141 and the arc-shaped snap-fit ​​position 131. The assembly and fixation of the spring needle body can be completed without setting other limiting structures, which effectively simplifies the assembly process, improves the structural stability of the spring needle after installation, and reduces the possibility of the spring needle loosening and shifting during long-term operation of the equipment.

[0042] Example 3:

[0043] Reference Figure 5 , Figure 6 As shown, this embodiment differs from Embodiment 1 and Embodiment 2 in that it also provides a spring needle fixing structure, including a single-leg spring needle and an auxiliary pressure needle. The auxiliary pressure needle includes an auxiliary pressure needle body 2, which is disposed opposite to the spring needle body 1 and is slidably inserted into the needle groove of the needle plate 3.

[0044] The auxiliary pressure needle body 2 includes a pressure needle 21 and an elastic pressure rod 22 disposed on the lower left side of the pressure needle 21. A hook part 23 is provided at the connection between the pressure needle 21 and the elastic pressure rod 22. The upper part of the elastic pressure rod 22 has a protrusion 221 for abutting against the lower part of the spring needle body 1. A fourth steel bar 4D is also provided at the lower part of the needle plate 3. When the auxiliary pressure needle body 2 is assembled into the needle groove of the needle plate 3, the fourth steel bar 4D will be correspondingly engaged in the hook part 23, and the middle of the pressure needle 21... A stop piece 211 is provided on the left side of the part. The stop piece 211 abuts against the lower surface of the second steel bar 4B. The cooperation between the stop piece 211, the hook part 23 and the second steel bar 4B and the fourth steel bar 4D keeps the auxiliary pressure needle body 2 in a stable position. After abutting, the spring needle body 1 presses against the third steel bar 4C and will not move at will. When working with the single-leg spring needle, it can stably provide holding force, reduce the probability of needle shaking during knitting, and improve the forming stability of the fabric.

[0045] Combination Figure 2As shown, after the spring needle body 1 is inserted into the needle groove, the elastic pressure bar 22 is squeezed by the side of the needle bar 11 to produce elastic deformation. Relying on its own rebound force, it continues to press against the bar of the spring needle body 1, so that the arc-shaped concave part of the needle tail 13 always keeps in contact with the surface of the third steel bar 4C. This can not only prevent the spring needle body 1 from swaying laterally during operation, but also not affect the normal up-and-down reciprocating motion of the spring needle body 1 along the needle groove. This effectively improves the stability of the spring needle working process and reduces the occurrence of needle slippage and missing needles during flat knitting.

[0046] Of course, the above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They cannot be used to limit the protection scope of this utility model. All modifications made in accordance with the spirit of the main technical solution of this utility model should be covered within the protection scope of this utility model.

Claims

1. A single leg spring needle for a computerized flat knitting machine, characterized in that, Includes a spring needle body (1), which is used to slide into the needle groove of the needle plate (3); The spring needle body (1) includes a needle bar (11), a needle head (12) located on the upper part of the needle bar (11), and a needle tail (13) located at the lower end of the needle bar (11). The needle bar (11), the needle head (12), and the needle tail (13) are in a straight line as a whole. The needle bar (11) is provided with an abutting protrusion (111) protruding outward, which is used to limit the cooperation with the second steel bar (4B) in the needle plate, and the abutting protrusion (111) of the needle bar (11) forms a first clearance recess (112) and a second clearance recess (113) between the needle head (12) and the needle tail (13).

2. The single leg spring needle for a computerized flat knitting machine according to claim 1, wherein The lower end of the needle bar (11) is provided with an elastic snap-fit ​​part (14), and a snap-fit ​​recess (141) is formed between the snap-fit ​​part (14) and the needle tail (13) so that the third steel bar (4C) can be snapped into the snap-fit ​​recess (141).

3. The single leg spring needle for a computerized flat knitting machine according to claim 1, wherein The needle tail (13) is provided with an arc-shaped locking position (131) along the height direction.

4. The single leg spring needle for a computerized flat knitting machine according to claim 1, wherein The needle head (12) is provided with a pressure plate (121) that abuts against the long needle foot, and the needle head (12) is provided with a spring plate heel (122) that cooperates with the mountain plate.

5. The single leg spring needle for a computerized flat knitting machine according to claim 1, wherein The lower end face of the needle tail (13) is an inclined guide slope, which slopes downward from left to right at an angle of 15°-30°.

6. The single leg spring needle for a computerized flat knitting machine according to claim 1, wherein The first recessed area (112), the second recessed area (113) and the abutting protrusion (111) are connected by a rounded transition.

7. The single leg spring needle for a computerized flat knitting machine according to claim 1, wherein The depths of the first clearance recess (112) and the second clearance recess (113) are both 0.8mm-1.2mm.

8. The single leg spring needle for a computerized flat knitting machine according to claim 1, wherein The cross-section of the needle bar (11) is rectangular, with a width of 2.0mm-3.0mm, and the total length of the spring needle body (1) is 50mm-60mm.

9. A pogo pin fixing structure characterized by comprising: Includes the single-leg spring needle as described in claim 1 or 2 and an auxiliary pressure needle, wherein the auxiliary pressure needle includes an auxiliary pressure needle body (2), the auxiliary pressure needle body (2) is disposed opposite to the spring needle body (1), and is slidably inserted into the needle groove of the needle plate (3); The auxiliary pressure needle body (2) includes a pressure needle (21) and an elastic pressure rod (22) disposed at the lower end of the pressure needle (21). The upper part of the elastic pressure rod (22) has a protrusion (221) for contacting the lower part of the spring needle body (1). After contact, the spring needle body (1) presses against the third steel bar (4C).

10. The pogo pin fixation structure of claim 9, wherein, A hook (23) is provided at the connection between the pressure needle (21) and the elastic pressure rod (22) for limiting and cooperating with the fourth steel bar (4D).

Images