Weft needle structure of warp knitting machine

Abstract

A weft needle structure of a warp knitting machine comprises a mounting base, and a plurality of weft needles are arranged on one side of the mounting base side by side. The weft needle comprises a vertically arranged needle rod, the upper end of the needle rod is bent backwards and is movably clamped with the front side of the mounting seat, and the lower end of the needle rod is spirally connected with a needle head; the lower end of the needle head is bent towards the front side, and a needle hole is vertically formed in the middle of the bent section in a penetrating mode. The weft needle and the installation base are connected in a clamping mode, a single weft needle can be conveniently adjusted, overall replacement is not needed, the cost is saved, the needle hole is vertically arranged, yarn cannot be bent when penetrating through the needle hole, and therefore friction loss between the weft needle and the needle hole is reduced, the needle rod and the needle head of the weft needle are connected in a split mode, and a spiral connection mode is adopted. The size and the style of the needle head can be conveniently and independently replaced, flexibility is high, and convenience and rapidness are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of warp knitting machine, concretely is a kind of warp knitting machine weft yarn needle structure. BACKGROUND

[0002] Weft yarn needle is one of the main loop-forming components of warp knitting machine, and its application amount in the warp knitting industry is huge. Each machine uses tens of thousands of weft yarn needles. To facilitate installation and use, multiple weft yarn needles are usually installed on a weft yarn needle block, and then multiple weft yarn needle blocks are installed on the warp knitting machine. In the actual knitting process, the weft yarn needle needs to drive the yarn to move back and forth horizontally multiple times. The needle body and needle eye of the commonly used weft yarn needle are located on the same straight line. When the yarn passes through the needle eye, it will be bent, which causes the yarn to rub against the needle eye during the movement of the weft yarn needle. After long-term use, the needle eye and the yarn may be damaged due to friction, increasing the frequency of replacement of the yarn and the weft yarn needle. Moreover, the weft yarn needle and the weft yarn needle plate are usually connected by welding. When replacing a weft yarn needle, the weft yarn needle block where the weft yarn needle is located needs to be completely removed and replaced, which is complicated and time-consuming and has a high replacement cost. SUMMARY

[0003] To solve the technical problems of large friction between the needle eye and the yarn and inconvenient replacement of the weft yarn needle in the background art, the utility model provides a weft yarn needle structure of a warp knitting machine.

[0004] The technical scheme of the utility model is as follows:

[0005] A weft yarn needle structure of a warp knitting machine, comprising a mounting seat, a plurality of weft yarn needles are arranged side by side on one side of the mounting seat; the weft yarn needle comprises a vertical needle rod, the upper end of the needle rod is bent backward and is movably connected to the front side of the mounting seat, and the lower end of the needle rod is connected with a needle head in a screwing manner; the lower end of the needle head is bent toward the front side, and a needle hole is vertically arranged in the middle of the bent section. The weft yarn needle and the mounting seat are connected in a clamping manner, which facilitates the adjustment of a single weft yarn needle without the need for complete replacement, saves cost, and the needle hole is vertically arranged, so that the yarn will not be bent when passing through the needle hole, thereby reducing the friction loss between the two.

[0006] As a preferred embodiment, the upper and lower edges of the needle hole are in a round corner / chamfer structure. When the weft yarn needle drives the yarn to move back and forth horizontally, the yarn can smoothly transition at the edge of the needle hole, reducing friction.

[0007] As to the connection between the mounting seat and the weft yarn needle, the mounting seat comprises a transversely arranged connecting plate, the connecting plate comprises two clamping plates arranged opposite to each other, and the upper end of the needle rod is clamped between the two clamping plates. The clamping manner is used instead of welding connection, which facilitates the taking and replacement of the weft yarn needle.

[0008] Furthermore, the two clamping plates are configured to be elastically clamped and connected by a fastening bolt. After the weft needle is installed, the fastening bolt is tightened and the two clamping plates are clamped to clamp the weft needle, thereby fixing it. When the weft needle needs to be replaced, the fastening bolt between the two clamping plates is loosened to increase the gap between the two clamping plates, so that the weft needle can be easily removed and replaced.

[0009] Preferably, the two clamping plates are provided with notches at the positions corresponding to the needle bars, and the upper ends of the needle bars are located in the notches. The positions and shapes of the notches correspond one to one with the needle bars, which not only facilitates the removal of the needle bars, but also limits the needle bars to prevent crossing and collision between adjacent needle bars.

[0010] In a preferred embodiment, a slot is provided within the notch of at least one of the clamping plates, and a protrusion is provided on the upper end of the needle bar, facing the clamping plate, that engages with the slot. When the upper end of the needle bar is inserted into the notch, the protrusion and the slot engage with each other, thereby securing the weft needle and preventing already installed or unreplaced weft needles from falling through the notch during replacement or installation.

[0011] Further preferably, the cross-section of the needle rod is circular, and the cross-sectional radius of the end close to the mounting seat is larger than the cross-sectional radius of the end close to the needle head. The circular structure ensures the smoothness of the needle rod wall, and the cross-sectional radius close to the needle head end is relatively small, ensuring that the distance between two adjacent needle heads is convenient for directly rotating and unscrewing the needle heads, making it convenient for the installer to take them out.

[0012] As for the mounting base, a fixing plate is connected to the side of the connecting plate facing away from the weft needle, and the fixing plate can be connected and fixed to the warp knitting machine. The warp knitting machine is connected by the fixing plate, which increases the connection area between the connecting plate and the warp knitting machine and facilitates overall disassembly and assembly.

[0013] Through the above design, the beneficial effects of the weft needle structure of the warp knitting machine of the utility model are:

[0014] (1) The needle hole is set vertically, and the yarn will not bend when passing through the needle hole, thereby reducing the friction loss between the two.

[0015] (2) The needle bar and the needle head of the weft needle are connected separately and are connected in a spiral manner, which makes it easy to change the size and style of the needle head separately, with high flexibility, convenience and speed.

[0016] (3) The weft needle and the mounting seat are connected by a clip connection, and the needle bar is clamped between the two clamping plates, which makes it easy to adjust a single weft needle without having to replace the entire needle, thus saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In the attached figure:

[0018] Figure 1 This is a perspective view of the weft needle structure of the warp knitting machine of the present invention;

[0019] Figure 2 is a cross-sectional view of a weft needle in an embodiment;

[0020] Figure 3 Schematic diagram of the connecting plate in the embodiment;

[0021] The components represented by the reference numerals in the figure are:

[0022] 1. Mounting seat; 11. Connecting plate; 111. Clamping plate; 1111. Upper clamping plate; 1112. Lower clamping plate; 12. Fixing plate; 13. Fastening bolt; 14. Spring; 2. Weft needle; 21. Needle bar; 22. Needle head; 23. Needle hole; 24. Protrusion. DETAILED DESCRIPTION

[0023] Example

[0024] Combine Figures 1 to 3 This embodiment provides a weft needle 2 structure for a warp knitting machine, comprising a mounting base 1, with a plurality of weft needles 2 arranged side by side on one side. The weft needles 2 include vertically arranged needle bars 21, the upper ends of which are bent rearward and movably engaged with the front side of the mounting base 1. The weft needles 2 are connected to the mounting base 1 using a snap-fit ​​connection, which facilitates adjustment of individual weft needles 2 without requiring replacement of the entire weft needle 2.

[0025] Combine Figure 1 and Figure 3 Specifically, the mounting base 1 and the weft needle 2 are connected by a horizontally arranged connecting plate 11, which includes two clamping plates 111 arranged opposite each other in an upper and lower direction. The upper end of the needle rod 21 is clamped between the two clamping plates 111. The clamping method is used instead of the welding connection to facilitate the removal and replacement of the weft needle 2.

[0026] Furthermore, the two clamping plates 111 are configured to be elastically clamped and are connected by a fastening bolt 13. After the weft needle 2 is installed, the fastening bolt 13 is tightened and the two clamping plates 111 are clamped to clamp the weft needle 2, thereby fixing it. When the weft needle 2 needs to be replaced, the fastening bolt 13 between the two clamping plates 111 is loosened to increase the gap between the two clamping plates 111, so that the weft needle 2 can be easily removed and replaced.

[0027] In a specific implementation, the two clamping plates 111 include an upper clamping plate 1111 and a lower clamping plate 1112, both of which are horizontally arranged rectangular plates. The upper side of the lower clamping plate 1112 is provided with a plurality of notches. A spring 14 is further provided between the two clamping plates 111, one end of the spring 14 being connected to the notch and the other end being connected to the lower side of the upper clamping plate 1111. When the two clamping plates 111 are pressed together, the spring 14 can be retracted into the notch. When the fastening bolts 13 between the two clamping plates 111 are loosened, the distance between the two clamping plates 111 can be increased under the action of the spring 14, thereby facilitating the removal of the weft needle 2.

[0028] Exemplarily, several of the recesses and springs 14 are symmetrically arranged at both ends of the lower clamping plate 1112 along the array direction of several weft needles 2, and several fastening bolts 13 are provided, and are symmetrically arranged at both ends of the two clamping plates 111 along the array direction of several weft needles 2. The symmetrical arrangement can balance the force on the two clamping plates 111 when clamping or releasing, thereby improving stability.

[0029] Preferably, the two clamping plates 111 are provided with notches at the positions corresponding to the needle rods 21, and the upper ends of the needle rods 21 are located in the notches. The positions and shapes of the notches correspond one-to-one with the needle rods 21, which not only facilitates the removal of the needle rods 21, but also can limit the needle rods 21 to prevent crossing, collision, etc. between adjacent needle rods 21.

[0030] As a preferred embodiment, a slot is provided in the notch of at least one of the clamping plates 111, and a protrusion 24 is provided on the upper end of the needle bar 21 facing the clamping plate 111, which is capable of engaging with the slot. After the upper end of the needle bar 21 is inserted into the notch, the protrusion 24 and the slot engage with each other, thereby limiting the position of the weft needle 2 and preventing a weft needle 2 that has been installed or does not need to be replaced from falling out of the notch when the weft needle 2 is replaced or installed.

[0031] In a specific implementation, the notches of the two clamping plates 111 are enclosed together and clamped on the upper and lower sides of the upper end of the needle rod 21, and an anti-slip rubber pad is provided in the notch, which is not only anti-slip but also has good elasticity and can reduce vibration.

[0032] Regarding the mounting base 1, the side of the connecting plate 11 facing away from the weft needle 2 is connected to a fixing plate 12, and the side of the lower clamping plate 1112 facing away from the weft needle 2 is fixedly connected to the fixing plate 12. The fixing plate 12 can be connected and fixed to the warp knitting machine. Connecting the warp knitting machine through the fixing plate 12 increases the connection area between the connecting plate 11 and the warp knitting machine, making it easier to disassemble and assemble the entire machine.

[0033] In this embodiment, combined with Figure 2The lower end of the needle rod 21 is spirally connected to the needle head 22. The lower end of the needle rod 21 is provided with an opening, and the opening is provided with an internal thread. The upper end of the needle head 22 is provided with a threaded head, and the threaded head is spirally connected to the opening. It is convenient to individually change the size and style of the needle head 22, which is highly flexible and convenient.

[0034] Further preferably, the cross-section of the needle rod 21 is circular, and the cross-sectional radius of the end close to the mounting seat 1 is larger than the cross-sectional radius of the end close to the needle head 22. The circular structure ensures the smoothness of the rod wall of the needle rod 21, and the cross-sectional radius close to the end of the needle head 22 is relatively small, ensuring that the distance between the two adjacent needle heads 22 is convenient for directly rotating and unscrewing the needle head 22, making it convenient for the installer to take it.

[0035] The lower end of the needle 22 is bent toward the front, and a needle hole 23 is vertically penetrated in the middle of the bent section. The needle hole 23 is vertically arranged, and the yarn does not bend when passing through the needle hole 23, thereby reducing the friction loss between the two.

[0036] As a preferred embodiment, the upper and lower edges of the needle hole 23 are rounded / chamfered structures. When the weft needle 2 drives the yarn to move repeatedly laterally, the yarn can smoothly transition at the edge of the needle hole 23 to reduce friction.

[0037] The weft needle 2 of this warp knitting machine features a vertically oriented needle hole 23, preventing the yarn from bending as it passes through the hole 23, thereby reducing frictional losses between the two. The shank 21 and needle head 22 of the weft needle 2 are connected separately, using a spiral connection. This allows for easy and convenient replacement of the needle head 22, offering high flexibility and speed. The weft needle 2 is connected to the mounting base 1 using a snap-fit ​​connection, with the shank 21 clamped between two clamping plates 111. This facilitates adjustment of individual weft needles 2 without requiring replacement of the entire needle, saving costs.

Claims

1. A weft needle structure for a warp knitting machine, characterized in that: It comprises a mounting seat (1), one side of which is provided with a plurality of weft needles (2); The weft needle (2) comprises a vertically arranged needle rod (21), the upper end of which is bent backward and movably engaged with the front side of the mounting seat (1), and the lower end of which is spirally connected to a needle head (22); The lower end of the needle (22) is bent toward the front side, and a needle hole (23) is vertically penetrated in the middle of the bent section.

2. A weft needle structure for a warp knitting machine according to claim 1, characterized in that: The upper and lower edges of the pinhole (23) are rounded / chamfered structures.

3. The weft needle structure of a warp knitting machine according to claim 1, characterized in that: The mounting seat (1) comprises a transversely arranged connecting plate (11), the connecting plate (11) comprises two clamping plates (111) arranged opposite to each other in an upper and lower direction, and the upper end of the needle rod (21) is clamped between the two clamping plates (111).

4. A weft needle structure for a warp knitting machine according to claim 3, characterized in that: The two clamping plates (111) are configured for elastic clamping.

5. The weft needle structure of a warp knitting machine according to claim 3, characterized in that: The two clamping plates (111) are provided with notches at positions corresponding to the needle rod (21), and the upper end of the needle rod (21) is located in the notches.

6. A weft needle structure for a warp knitting machine according to claim 5, characterized in that: A slot is provided in the notch of at least one of the card plates (111), and a protrusion (24) capable of engaging with the slot is provided on the side of the upper end of the needle rod (21) facing the card plate (111).

7. The weft needle structure of a warp knitting machine according to claim 1, characterized in that: The cross section of the needle rod (21) is circular, and the cross-sectional radius of the end close to the mounting seat (1) is larger than the cross-sectional radius of the end close to the needle head (22).

8. The weft needle structure of a warp knitting machine according to claim 3, characterized in that: A fixing plate (12) is connected to the side of the connecting plate (11) facing away from the weft needle (2), and the fixing plate (12) can be connected and fixed to the warp knitting machine.

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