Novel needle selection device

Abstract

The utility model discloses a novel needle selecting device which comprises a bottom plate, a needle pushing unit and a needle selecting device, the needle pushing unit is arranged at the bottom of the bottom plate, the needle selecting device is arranged above the needle pushing unit, the needle pushing unit comprises a needle pushing block, one side of the upper portion of the needle pushing block is provided with a first needle pushing triangle, and the other side of the upper portion of the needle pushing block is provided with a second needle pushing triangle. The end face of the needle pushing block is provided with a third needle pushing triangle, and the first needle pushing triangle is higher than the second needle pushing triangle, so that the needle pushing block is linked with the knitting needle through the first needle pushing triangle, the second needle pushing triangle and the third needle pushing triangle to rise to the A position, the H position and the B position; a magnetic attraction mechanism is arranged below the needle pushing unit, and when the needle selecting needle is not selected by the needle selecting device, the needle selecting needle is pressed into the needle groove through the needle selecting device, so that the magnetic attraction mechanism is magnetically attracted to the bottom of the needle selecting needle. The magnetic attraction mechanism is in magnetic attraction connection with the needle selection pin, so that the service life of the needle selection pin and the needle selector is greatly prolonged, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of flat knitting machines, and particularly relates to a novel needle selection device. Background Art

[0002] In the past, in a flat knitting machine, knitting needles that are received in a plurality of needle grooves arranged in parallel on a needle bed and can perform sliding displacement are selected by a needle selection device mounted on a cam carriage that reciprocates along the length direction of the needle bed, and are driven by a knitting cam system to perform knitting operations. The knitting operations of the knitting needles include basic operations such as needle turning, knitting, purl stitch, grafting, and non-knitting. When the existing needle selector selects a needle selection foot, the blade of the needle selector is used to press the needle selection foot into the needle groove. However, when the needle selection foot is pressed into the needle groove, the selection tooth piece of the needle selection foot inevitably rubs against the blade of the needle selector, thereby reducing the service life of the needle selector or the needle selection foot and greatly increasing the production cost. Summary of the Utility Model

[0003] The technical problem to be solved by the embodiments of the utility model is to provide a novel needle selection device, which magnetically connects with the needle selection foot by using a magnetic attraction mechanism, reduces the friction between the needle selection foot and the needle selector, greatly improves the service life of the needle selection foot and the needle selector, and reduces the production cost.

[0004] To achieve the above object, the utility model discloses a novel needle selection device, which includes a bottom plate, a needle pushing unit, and a needle selector. The needle pushing unit is arranged at the bottom of the bottom plate, and the needle selector is arranged above the needle pushing unit.

[0005] Wherein, the needle pushing unit includes a needle pushing block. One side of the upper part of the needle pushing block has a first needle pushing cam, the other side of the upper part of the needle pushing block has a second needle pushing cam, and the end face of the needle pushing block has a third needle pushing cam. The height of the first needle pushing cam is higher than the height of the second needle pushing cam, so that the needle pushing block drives the knitting needle to rise to position A, position H, and position B through the first needle pushing cam, the second needle pushing cam, and the third needle pushing cam.

[0006] A magnetic attraction mechanism is arranged below the needle pushing unit. When the needle selection foot is not selected by the needle selector, the needle selector presses the needle selection foot into the needle groove so that the magnetic attraction mechanism magnetically attracts the bottom of the needle selection foot.

[0007] Furthermore, the magnetic attraction mechanism includes a magnet. A base is fixedly arranged at the bottom of the bottom plate. A slot is arranged on the base. An installation groove is arranged on the inner wall of the slot opposite to the needle pushing block, and the magnet is inserted into the installation groove.

[0008] Further, the magnetic attraction mechanism further includes a first magnetic conduction block and a second magnetic conduction block. The first magnetic conduction block and the second magnetic conduction block are a pair and are respectively inserted into the installation groove, and the magnet is arranged between the first magnetic conduction block and the second magnetic conduction block.

[0009] Further, the length of the magnet is less than the lengths of the first magnetic conduction block and the second magnetic conduction block, so as to form a magnetic attraction space between the rear ends of the magnet and the first magnetic conduction block and the second magnetic conduction block.

[0010] Further, a partition block is arranged between the first magnetic conduction block and the second magnetic conduction block, and magnetic isolation sheets are respectively arranged between the partition block and the first magnetic conduction block and the second magnetic conduction block.

[0011] Further, the two sides of the front ends of the first magnetic conduction block and the second magnetic conduction block have outwardly protruding limit bumps, and the distance between the limit bumps is greater than the length of the installation groove, so that the limit bumps of the first magnetic conduction block and the second magnetic conduction block are in a stopping fit with the end face of the base.

[0012] Further, there are pressing needle inclined surfaces between the top surfaces of the two ends of the third push needle triangle and the first push needle triangle and the second push needle triangle, which are used to press the selected needle feet in the B position into the needle grooves.

[0013] Further, the front end face of the base has a sunk groove.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] In the present utility model, the design of the magnetic attraction mechanism is added. By using the magnetic attraction connection between the magnetic attraction mechanism and the selected needle feet, it can ensure that the selected needle feet stay in place, thereby improving the stability of needle selection. At the same time, it avoids the friction between the selected needle feet and the blades of the needle selector, greatly improving the service lives of the selected needle feet and the needle selector, and greatly reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is the overall structural schematic diagram of the first embodiment;

[0017] Figure 2 is for showing Figure 1 the structural schematic diagram of part A in

[0018] Figure 3 is the overall structural exploded view of the magnetic attraction mechanism;

[0019] Figure 4 is for showing Figure 3 the structural schematic diagram of part B in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] To make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0021] Referring to Figure 1 As shown, a novel needle selection device includes a base plate 1, a needle pushing unit 2, and a selector 3. The needle pushing unit 2 is disposed at the bottom of the base plate 1, and the selector 3 is disposed above the needle pushing unit 2.

[0022] In this embodiment, there are two knitting systems on the base plate 1, and each knitting system adopts a pair of needle pushing units 2 and selectors 3, so that when the base plate 1 moves left and right with the machine head, the needle pushing units 2 and selectors 3 can cooperate to select needles for the knitting needle assemblies on the needle plate.

[0023] Moreover, the selector of this embodiment is preferably a four-stage selector, which greatly reduces the volume of the cam plate, speeds up the needle selection speed, and greatly improves the knitting efficiency.

[0024] Combined with Figure 2 As shown, specifically, the needle pushing unit 2 includes a needle pushing block 21. On one side of the upper part of the needle pushing block 21, there is a first needle pushing triangle 22, and on the other side of the upper part of the needle pushing block 21, there is a second needle pushing triangle 23. And the height of the first needle pushing triangle 22 is higher than that of the second needle pushing triangle 23. The end face of the needle pushing block 21 has a third needle pushing triangle 24. There are three positions in the current knitting system, such as position A, position H, and position B. The three positions in this knitting system are prior art, and no repetitive description is made in this embodiment. So that the first needle pushing triangle 22 cooperates with the selector 3 to push the needle selection foot to position A, the second needle pushing triangle 23 cooperates with the selector 3 to push the needle selection foot to position H, and the third needle pushing triangle 24 cooperates with the selector 3 to push the needle selection foot to position B, enabling the knitting needle assembly to complete corresponding knitting actions.

[0025] Preferably, a magnetic attraction mechanism 4 is provided below the needle pushing unit 2. The magnetic attraction mechanism 4 includes a magnet 41, a first magnetic conduction block 42, and a second magnetic conduction block 42A. A base 11 is fixedly provided at the bottom of the base plate 1. A slot 111 is provided on the base 11. The inner wall of the slot 111 opposite to the needle pushing block 21 has an installation groove 112. In this embodiment, the first magnetic conduction block 42 and the second magnetic conduction block 42A are a pair and are respectively inserted into the installation groove 112 up and down, and the magnet 41 is inserted into the installation groove 112 and is arranged between the first magnetic conduction block 42 and the second magnetic conduction block 42A. And the length of the magnet 41 is slightly less than the lengths of the first magnetic conduction block 42 and the second magnetic conduction block 42A, so as to form a magnetic attraction space 43 between the rear ends of the magnet 41 and the first magnetic conduction block 42 and the second magnetic conduction block 42A, thereby enhancing the magnetic attraction force of the magnet by using the first magnetic conduction block 42 and the second magnetic conduction block 42A, so that the magnet 41 can be normally attracted to the needle selecting pin without contacting the needle selecting pin, thereby avoiding frequent contact and friction between the surface of the magnet and the needle selecting pin, resulting in notches on the magnet, effectively reducing the cost.

[0026] Further, a partition block 44 is provided between the first magnetic conduction block 42 and the second magnetic conduction block 42A. Magnetic isolation sheets 45 are respectively provided between the partition block 44 and the first magnetic conduction block 42 and the second magnetic conduction block 42A. The partition block 44 is preferably made of a metal material. In this embodiment, the partition block is not limited to one kind of metal material and can also be a non-magnetic material, while the magnetic isolation sheet 45 is preferably made of a copper sheet, so as to avoid the generation of magnetic attraction force at the rear end of the partition block 44 under the influence of the magnet 41, so that when the needle selecting pin reaches the position of the partition block 44, the needle selecting pin is separated from it due to the lack of magnetic force of the partition block 44, so that the needle selecting pin is exposed from the needle slot of the needle plate under the action of its own elasticity.

[0027] Refer to Figure 3 As shown, further, both sides of the front ends of the first magnetic conduction block 42 and the second magnetic conduction block 42A have outwardly protruding limit bumps 421. The distance between the limit bumps 421 is greater than the length of the installation groove 112, so that after the first magnetic conduction block 42 and the second magnetic conduction block 42A are inserted into the installation groove 112, the limit bumps 421 are in end position fit with the end face of the base 11 to prevent the magnet 41 and the needle selecting pin from shifting during the magnetic process. And the front end face of the base 11 has a sunk groove 113. In this embodiment, the depth of the sunk groove 113 is the same as the width of the limit bump 421, so that after the first magnetic conduction block 42 and the second magnetic conduction block 42A are inserted into the installation groove 112, the front ends of the first magnetic conduction block 42 and the second magnetic conduction block 42A can be flush with the front end face of the base 11, making the design of the magnetic attraction mechanism 4 more regular and beautiful, and at the same time facilitating the replacement of the magnet and reducing the maintenance cost.

[0028] With the above settings, when the selector 3 selects the selector pin, the selector pin immediately sinks into the needle groove, and the lower part of the selector pin is attracted to the magnet 41 of the base, so as to ensure that the selector pin remains in the needle groove until the lower part of the selector pin leaves the magnet 41. Then, under the elastic action, the selector pin resets, so that the selection teeth of the selector pin expose out of the needle groove, greatly improving the stability of needle selection.

[0029] More preferably, a thimble triangle 25 is arranged below the third needle pushing triangle 24 in the middle of the needle pushing block 21. After the selector pin is preselected by the previous selector 3, the selector pin is at the height position of the second needle pushing triangle 23. In order to ensure that the selector pin does not touch the selector blade when passing through the current selector 3, the lower part of the selector pin is lifted under the action of the thimble triangle 25, and the magnet 41 is used to connect with the lower part of the selector pin, so that the selector pin sinks into the needle groove, thus avoiding the selector blade and preventing interference between selector pins, ensuring the stability of the knitting process of the knitting needle.

[0030] Furthermore, there are pressing needle inclined surfaces 241 between the top surfaces at both ends of the third needle pushing triangle 24 and the first needle pushing triangle 22 and the second needle pushing triangle 23. When the lower end of the selector pin moves along the upper edge of the zero position triangle 423, under the action of the inclined slope surface 425, the selector pin is pressed into the needle groove, and the selector pin is held by the magnetic attraction mechanism 4, so that the selector pin is in the B position and does not participate in knitting.

[0031] Refer to Figures 1-3 As shown, when the machine head moves to the left, the specific needle selection actions are as follows:

[0032] 1. When knitting a stitch or making a yo, after the selector pin is preselected, the lower butt of the selector pin is at the height of the second needle pushing triangle 23. When the selection teeth of the selector pin pass through the blade of the selector 3, the selector pin is first pressed into the needle groove by the thimble triangle 25, and the lower part of the selector pin is magnetically attracted to the magnet 41, so that the selector pin stays in place along the track of the second needle pushing triangle 23, and the selector pin is in the H position.

[0033] 2. When not knitting, the selector does not select the selector pin. The selection teeth of the selector pin move along the track of the third needle pushing triangle 24, and under the action of the pressing needle inclined surface 241, the selector pin is pressed into the needle groove, and the lower part of the selector pin is magnetically attracted to the magnet 41, so that the selector pin moves along the track of the needle pushing triangle 24, and the selector pin is in the B position.

[0034] 3. When knitting, when the selector selects the selector pin, the selection teeth of the selector pin move along the track of the third needle pushing triangle 24, and under the action of the pressing needle inclined surface 241, the selector pin is pressed into the needle groove, and the lower part of the selector pin is magnetically attracted to the magnet 41 until the selector pin does not magnetically attract to the magnetic component 432 when passing through the metal spacer, so that the spring selector pin 93 exposes out of the needle groove and moves along the track of the first needle pushing triangle 22, and the selector pin is pushed to the A position under the action of the first needle pushing triangle 22.

[0035] 4. When knitting purl stitches, when the selector selects the selection needle foot, the selection teeth of the selection needle foot move along the track of the third needle pushing cam 24, and under the action of the needle pressing inclined surface 241, the selection needle foot is pressed into the needle groove, so that the lower part of the selection needle foot is magnetically attracted to the magnet 41 until the selection needle foot does not magnetically attract to the magnetic component 432 when passing through the metal spacer, so that the spring selection needle foot 93 is exposed from the needle groove and moves along the track of the first needle pushing cam 22, so that the selection needle foot is pushed to position A under the action of the first needle pushing cam 22.

[0036] When the machine head moves to the right, its working process is the same as that when the machine head moves to the left, and this embodiment will not be repeated again.

[0037] Of course, the above embodiments are only for explaining the technical concept and features of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be used to limit the protection scope of the present invention. All modifications made according to the spirit of the main technical solution of the present invention should be covered within the protection scope of the present invention.

Claims

1. A new needle selection device, characterized in that: It comprises a base plate (1), a needle pushing unit (2), and a needle selector (3), wherein the needle pushing unit (2) is arranged at the bottom of the base plate (1), and the needle selector (3) is arranged above the needle pushing unit (2); The pin pushing unit (2) comprises a pin pushing block (21), one side of the upper portion of the pin pushing block (21) is provided with a first pin pushing triangle (22), the other side of the upper portion of the pin pushing block (21) is provided with a second pin pushing triangle (23), the end surface of the pin pushing block (21) is provided with a third pin pushing triangle (24), and the height of the first pin pushing triangle (22) is higher than the height of the second pin pushing triangle (23), so that the pin pushing block (21) can be linked to the pin selection pin to rise to the A position, the H position, and the B position through the first pin pushing triangle (22), the second pin pushing triangle (23), and the third pin pushing triangle (24); A magnetic attraction mechanism (4) is provided below the needle push unit (2); when the needle selection pin is not selected by the needle selector (3), the needle selection pin is pressed into the needle slot by the needle selector (3), so that the magnetic attraction mechanism (4) is magnetically attracted to the bottom of the needle selection pin.

2. A novel needle selection device according to claim 1, characterized in that: The magnetic attraction mechanism (4) comprises a magnet (41); a base (11) is fixedly arranged at the bottom of the bottom plate (1); a slot (111) is arranged on the base (11); an inner wall of the slot (111) opposite to the push pin block (21) has a mounting slot (112); and the magnet (41) is inserted into the mounting slot (112).

3. A novel needle selection device according to claim 2, characterized in that: The magnetic attraction mechanism (4) further comprises a first magnetic conductive block (42) and a second magnetic conductive block (42A); the first magnetic conductive block (42) and the second magnetic conductive block (42A) form a pair and are respectively inserted into the mounting groove (112); and the magnet (41) is arranged between the first magnetic conductive block (42) and the second magnetic conductive block (42A).

4. A novel needle selection device according to claim 3, characterized in that: The length of the magnet (41) is slightly smaller than the length of the first magnetic conductive block (42) and the second magnetic conductive block (42A), so that a magnetic attraction space (43) is formed between the rear end of the magnet (41) and the rear ends of the first magnetic conductive block (42) and the second magnetic conductive block (42A).

5. A novel needle selection device according to claim 3, characterized in that: A separation block (44) is provided between the first magnetic conductive block (42) and the second magnetic conductive block (42A), and a magnetic isolation sheet (45) is provided between the separation block (44) and the first magnetic conductive block (42) and the second magnetic conductive block (42A).

6. A novel needle selection device according to claim 3, characterized in that: Both sides of the front ends of the first magnetic conductive block (42) and the second magnetic conductive block (42A) are provided with outwardly protruding limiting protrusions (421), and the distance between the limiting protrusions (421) is greater than the length of the mounting groove (112), so that the limiting protrusions (421) of the first magnetic conductive block (42) and the second magnetic conductive block (42A) are engaged with the end surface of the base (11).

7. A novel needle selection device according to claim 1, characterized in that: There are needle pressing inclined surfaces (241) between the top surfaces at both ends of the third needle pushing triangle (24) and the first needle pushing triangle (22) and the second needle pushing triangle (23), which are used to press the needle selection pin at position B into the needle groove.

8. A novel needle selection device according to claim 3 or 6, characterized in that: The front end surface of the base (11) is provided with a sink groove (113).

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