Computerized flat knitting machine with high-density needle plate structure

Abstract

The application discloses a high-density needle plate structure of a computerized flat knitting machine, which comprises a needle plate, a needle, a piece A of an insert piece which is inserted into the needle plate at equal intervals, a piece B of the insert piece which is inserted between two adjacent pieces A of the insert piece to form two needle grooves in which the needle can slide, and an avoiding groove B which is formed in the front end of the piece B of the insert piece and extends along the direction in which the needle is withdrawn, wherein two symmetric needles which are arranged on the piece B of the insert piece have smooth sides which abut against each other in the avoiding groove B. According to the scheme, the avoiding groove B is formed in the piece B of the insert piece, so that the smooth sides of the two needles which enter the needle groove can abut against each other, thereby replacing the original piece of the insert piece to laterally constrain the other needle and ensuring that the needle remains stable laterally when the needle is inserted and withdrawn. Meanwhile, since the needle is partially inserted into the avoiding groove B, the thickness of the part which replaces the blocking part of the original piece of the insert piece becomes the thickness which can be increased by the needle, so that the strength of the needle is increased and the bending and deformation of the needle during the knitting process are avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to a computerized flat knitting machine, in particular to a high-density needle plate structure of a computerized flat knitting machine. BACKGROUND

[0002] The current market general needle plate, evenly arranged inserts adopt a type, that is, a needle plate adopts Figure 7 type insert installation. The needle thickness needs to consider the distance between two inserts, and the high-density needle plate has a small distance between two inserts due to the large number of inserts arranged per inch, so the needle thickness also needs to be small. One of the technical difficulties of the current high-density needle plate is that the needle thickness is small, the whole needle is soft, the deformation space is large, which affects normal knitting, and the needle hook is soft, and the needle hook often breaks. Therefore, it is urgent to develop a new needle plate structure to improve the problem of low strength of the existing high-density needle plate. SUMMARY

[0003] The present application relates to a computerized flat knitting machine, in particular to a high-density needle plate structure of a computerized flat knitting machine.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] A high-density needle plate structure of a computerized flat knitting machine, comprising

[0006] a needle plate;

[0007] a needle;

[0008] an insert A, which is inserted into the needle plate at equal intervals;

[0009] an insert B, which is inserted between two adjacent insert As to form two needle slots for the needle to slide into;

[0010] The front end of the insert B is provided with an avoidance slot B, which extends in the needle-out direction of the needle, and two symmetrically arranged needles abut against each other smoothly in the avoidance slot B.

[0011] Preferably, the insert A is provided with an avoidance slot A, which extends in the needle-out direction of the needle, and the spring sheet of the needle slides in the avoidance slot A.

[0012] Preferably, the avoidance slot A is a through slot.

[0013] Preferably, the tail end of the needle has a slidingly matched tail plate extending into the needle slot between the insert A and the insert B.

[0014] Preferably, a first spacer piece is further included, and edges of the first spacer piece are provided with a plurality of first spacer strips at equal intervals, and the first spacer strips are smoothly inserted into the needle slot so that opposite surfaces of the insert piece A and the insert piece B abut against two sides of the first spacer strips.

[0015] Preferably, the insert piece A is provided with an insertion slot A, the front end of the insert piece B is provided with an insertion slot B, the parallelly arranged insert piece A and the insert piece B form a through insertion slot A, the first spacer piece is arranged in the insertion slot A, and a pressing strip is further inserted into the insertion slot A and abuts against the first spacer piece.

[0016] Preferably, the front end of the insert piece A is provided with an insertion slot C, the insertion slot C on the parallelly arranged insert piece A forms a through insertion slot B, the second spacer piece is arranged in the insertion slot B, a plurality of second spacer strips are arranged at equal intervals on the second spacer piece, and the second spacer strips are smoothly inserted into the gap between the two insert pieces A.

[0017] Preferably, a long needle is further included and is slidably arranged in the needle slot, the long needle comprises a head portion, a middle portion and a tail portion, the middle portion is connected with a flat knitting machine cam drive, the tail portion is smoothly abutted against a needle plate surface, and the head portion passes below the first spacer piece and is connected with the needle drive.

[0018] Preferably, an extension portion is arranged between the middle portion and the head portion, a fulcrum extending downward is arranged at a connection position between the extension portion and the middle portion, and the fulcrum is close to the needle plate surface so as to be smoothly abutted against the needle plate surface after the long needle is pressed.

[0019] Compared with the prior art, the present application has the following beneficial effects:

[0020] 1. The needle slot formed by the interval arrangement of the insert piece A and the insert piece B is a through slot on the side where the insert piece B is arranged, and the needle cannot be constrained after being inserted into the needle slot. At this time, the present application ingeniously uses the smooth surface of the adjacent needle as a support surface to realize the mutual constraint between the two adjacent needles and ensure the stability of the needle in the needle slot when the needle is withdrawn or ejected. It should be noted that the thickness of the insert piece is reduced by the through slot design of the avoidance slot B on the insert piece B, and the thickness of the needle is effectively increased by supplementing the thickness of the needle, so that the arrangement density of the needle is not reduced, and the problem of insufficient strength caused by the thinness of the needle on the existing high-density needle plate is avoided.

[0021] 2. The avoidance slot is arranged on the insert piece A so that the spring piece protruding from the needle can enter the avoidance slot A, the arrangement interval between the adjacent needles is reduced, and the arrangement density of the needle per unit length is improved.

[0022] 3. The avoidance slot A on the insert A is also provided with a through slot, and the smooth abutment of the spring blades between the two adjacent needles replaces the original constraint of the insert A on the needle spring blades, so that the thickness of the insert A has a reduced margin (the thickness of the part of the original insert A used to block the needle spring blades), so as to further improve the arrangement density of the needles on the needle plate without reducing the thickness of the needles.

[0023] 4. The tail plate is arranged at the tail of the needle, and when the tail plate is inserted into the needle slot in a sliding fit, the insert A and the insert B on both sides of the surrounding plate will exert a left and right constraint on the tail plate. Even if one of the two needles is damaged and does not produce a lateral constraint on the other, the other intact needle can still maintain normal operation under the action of the tail plate.

[0024] 5. The first spacing piece is arranged to connect the insert A and the insert B into a whole, thereby improving the bending resistance of all the insert A and the insert B on the needle plate. It should be noted that the first spacing piece is arranged to fix the distance between the insert A and the insert B, so as to avoid damage to the needle slot caused by local deformation between the adjacent insert A and insert B.

[0025] 6. The slot A and the slot B are arranged on the insert A and the insert B respectively, and form a through slot A when the insert A and the insert B are arranged side by side on the needle plate. The first spacing piece is arranged in the through slot A and is pressed by the pressing strip to avoid loosening of the first spacing piece during operation of the computerized flat knitting machine.

[0026] 7. In order to effectively adapt to the added first spacing piece, the head of the long needle passes through the bottom of the first spacing piece.

[0027] 8. In order to adapt to different cam structures, the span of the arch-shaped structure formed by the head and the tail of the long needle in the present scheme is longer than that of the ordinary long needle, and the compression strength is relatively reduced, so that the long needle is easily separated from the cam structure under the driving of the cam structure. In order to ensure the stability of the transmission, a fulcrum is arranged on the long needle, and the existing one long-span arch-shaped structure is divided into two short-span arch-shaped structures through the fulcrum. When the long needle is deformed under pressure, the fulcrum can be supported on the surface of the needle plate to avoid the long needle from being deformed and separated from the driving connection with the cam structure, thereby ensuring the stability of the needle driving.

[0028] 9. The slot C is arranged on the insert A, and a through slot B is formed by the parallel slots. The second spacing piece is arranged in the through slot B to further improve the bending resistance of the front extension part of the insert A. At the same time, the second spacing strip arranged on the second spacing piece can effectively ensure the distance between the adjacent insert A, thereby avoiding local bending deformation of the insert A. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a structural schematic diagram of the present application.

[0030] Figure 2 is a structural schematic diagram of two adjacent knitting needles abutting each other after being inserted into the needle slot;

[0031] Figure 3 is a schematic diagram of the present application without the first spacer piece for reinforcing the long needle to drive the knitting needle to reset;

[0032] Figure 4 is a schematic diagram of the present application without the first spacer piece for reinforcing the long needle to drive the knitting needle to reset;

[0033] Figure 5 is a schematic diagram of the present application without the first spacer piece for reinforcing the long needle to drive the knitting needle to reset;

[0034] Figure 6 is a schematic diagram of the present application without the first spacer piece for reinforcing the long needle to drive the knitting needle to reset;

[0035] Figure 7 is a schematic diagram of the insert piece A, and the avoidance slot A is a non-through slot structure;

[0036] Figure 8 is a schematic diagram of the insert piece A, and the avoidance slot A is a through slot structure;

[0037] Figure 9 is a structural schematic diagram of the insert piece B;

[0038] Figure 10 is a structural schematic diagram of the first spacer piece;

[0039] Figure 11 is a structural schematic diagram of the second spacer piece;

[0040] Figure 12 is a structural schematic diagram of the long needle without the first spacer piece for reinforcing;

[0041] Figure 13 is a structural schematic diagram of the long needle without the first spacer piece for reinforcing;

[0042] Figure 14 is a structural schematic diagram of the knitting needle;

[0043] Figure 15 is a state diagram of the knitting needle located in the avoidance slot B of the insert piece B;

[0044] Figure 16 is a state diagram of the knitting needle located in the avoidance slot B of the insert piece B and cooperating with the long needle without fulcrum.

[0045] Reference signs: 1. needle plate;

[0046] 2. tab A 21. slot A 22. avoiding groove A 22a. blocking portion 23. slot C

[0047] 3. tab B 31. avoiding groove B 32. slot B

[0048] 4. long leg needle 41. middle section 42. head 43. tail 44. fulcrum 45. extension section

[0049] 5. needle 51. tail plate 52. spring piece

[0050] 6. pressing strip

[0051] 7. first spacing piece 71. first spacing strip

[0052] 8. second spacing piece 81. second spacing strip DETAILED DESCRIPTION

[0053] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0054] In the description of the present application, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0055] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0056] As Figures 1 to 16The high-density needle plate structure of a computerized flat knitting machine shown includes a needle plate 1, on which several inserts A 2 are arranged at equal intervals. At the same time, an insert B 3 is inserted between two inserts A, and the two inserts A and the insert B together form two needle grooves into which knitting needles can slide and engage.

[0057] To address the issue of insufficient needle thickness and rigidity in existing high-density computerized flat knitting machines, a clearance groove B31 extending along the advance and retreat direction of the needle 5 is created in the insert B3. This clearance groove B31 is a through groove, meaning that after the needle slides into the needle groove, the two needles positioned on either side of the insert B abut against each other. This replaces the lateral restraint structure of the insert plate in the existing needle plate structure with the lateral force between the two needles. It should be noted that, to ensure the smooth advance and retreat of the subsequent two needles, the needles positioned on either side of the insert B are symmetrical to the insert B3. That is, when the two needles enter the needle groove, their smooth surfaces abut against each other, while the spring plates 52 on the two needles face away from each other. Figure 2 , Figure 15 As shown, when part of the knitting needle is located in the relief groove B of the insert B, to ensure that the knitting needle can be stably constrained by the lateral forces from adjacent knitting needles and insert A, the distance between the side of insert A facing insert B and the dividing line in insert B should be equal to the thickness of the knitting needle. In this case, the width of the needle groove formed by insert A and insert B is necessarily less than the thickness of the knitting needle, and the knitting needle will slide in the relief groove B during both advance and retreat. Preferably, although the knitting needle is pressed down by the long needle during subsequent advance and retreat, it will not experience skipped stitches. However, to prevent unexpected situations, the width of the relief groove B 31 is equal to the width of the knitting needle, so that the upper and lower parts of the knitting needle entering the relief groove B can also be constrained by the relief groove B to prevent skipped stitches.

[0058] It should also be noted that insert A2 in this scheme can be adopted as follows: Figure 7 or Figure 8 The two forms shown. Specifically, as... Figure 7 As shown, a clearance groove A22 is provided on the front side of the insert A2. The width of the clearance groove is adapted to the width of the spring plate of the needle head. When the needle slides into the needle groove, the spring plate enters the clearance groove A to reduce the space occupied by the protruding spring plate and increase the density of the needle arrangement.

[0059] It should be noted that although the above design has eliminated the protruding portion of the spring sheet, there is still room for improvement. Specifically, the clearance groove A 22 can be as follows: Figure 8As shown, the avoiding groove A is a through groove structure. When the needle enters the needle groove, the spring piece on the needle enters the avoiding groove A, and as a constraint to the spring piece, it is achieved by the smooth abutment of the spring pieces on the two pointers symmetrically arranged on both sides of the insert piece A. It should be noted that, as shown in Figure 8 the insert piece A, compared to Figure 7 the insert piece A, the avoiding groove A is a through groove structure, and the blocking part 22a as the groove bottom is omitted in this structure, and the spring piece on the adjacent needle is used as a functional replacement. When designing the needle plate structure, this omitted part can be used as the thickness that the insert piece A 2 can reduce, thereby reducing the overall space occupied by the insert piece A in the needle plate structure, providing ample space for the arrangement of more needles.

[0060] In addition, it should be noted that if the constraint on one side of the needle completely depends on the abutment of the other needle, when the pointer is damaged, it is also easy to affect the operation of the needle matched with it. In order to prevent this from happening, as shown in Figure 2 , Figure 14 an end plate 51 is further provided at the tail end of the needle. Specifically, the thickness of the end plate is the width of the needle groove formed between the insert piece A and the insert piece B, and when the needle body slides in the avoiding groove B, the end plate slides in the needle groove and is laterally constrained by the insert piece A and the insert piece B. In this way, when one of the two needles is damaged, the constraint force on both sides of the other needle still exists, and the normal operation can still be maintained for a short time.

[0061] It should be noted that, as shown in Figures 5 to 9 in order to improve the stability of the arrangement of the insert piece A 2 and the insert piece B 5 on the needle plate and avoid the needle groove formed by the two pieces changing in width and affecting the smooth entry and exit of the needle, a first spacing piece 7 is further provided on the insert piece A 2 and the insert piece B 5. Specifically, the first spacing piece is comb-shaped, that is, its edge has a first spacing strip 71 extending along the length direction of the needle groove. When the insert piece A and the insert piece B are installed on the needle plate 1, the first spacing strip on the first spacing piece is inserted into the needle groove. At this time, the opposite surfaces of the insert piece A and the insert piece B abut on the left and right sides of the first spacing strip, respectively. The first spacing strip can well prevent the adjacent insert piece A and insert piece B from approaching or moving away from each other, thereby maintaining the stability of the width of the needle groove to prevent the needle from being too loose or too tight in the needle groove.

[0062] As a further improvement of the above embodiment, in order to ensure the stability of the first spacer 7 fixed on the insert piece A and the insert piece B, a slot A 21 is further provided on the insert piece A 2. Meanwhile, a slot B 32 is provided on the insert piece B, and the slot A and the slot B are of the same shape, and the slot opening is gradually tapered. When the insert piece A and the insert piece B are arranged on the needle plate 1, the slots A and the slots B form a through slot A, and the first spacer is installed at the bottom of the through slot A. Meanwhile, a pressing strip 6 is inserted into the through slot A. It should be noted that the cross section of the pressing strip is the same as the slot A, that is, when the pressing strip is inserted into the through slot A, the pressing strip cannot move up, down, forward and backward, and the first spacer is tightly pressed in the through slot A and cannot move, so as to avoid the high-frequency vibration of the flat knitting machine during operation, which causes the first spacer 71 to exit the needle slot formed by the insert piece A and the insert piece B.

[0063] It should be noted that, as shown in Figure 1 , the head of the insert piece A is protruded forward to guide the needle withdrawal, but the protruded part is also prone to elastic bending. In order to improve the stability of the protruded head of the insert piece A 2, a slot C 23 is provided at the protruded head of the insert piece A. It should be noted that the slot C is tapered, and the slots C on the insert piece A form a through slot B when arranged. As shown in Figure 1 , a second spacer 8 is arranged in the through slot B. It should be noted that, as shown in Figure 11 , the second spacer is also arranged with a plurality of second spacers 81 extending along the length direction of the needle slot at equal intervals. When the insert piece A is fixed on the needle plate, the second spacer enters the through slot B and is inserted into the gap between the two insert pieces A. So that the second spacer can abut on the opposite sides of the two insert pieces A, preventing the protruded parts of the insert pieces A from approaching or moving away from each other.

[0064] It should be noted that, in order to better adapt to the cam structure in various computer flat knitting machines, the long needle in the present scheme has two structures, as shown in Figure 12 and Figure 13 . One of them is used to adapt to the conventional structure of the cam groove close to the needle in the cam structure. The long needle in the present scheme, as shown in Figure 12 , includes a head 42, a middle segment 41 and a tail 43. The head 42 is inserted into the clamping groove provided on the needle after passing through the lower part of the first spacer, the middle segment is provided with two protrusions, and the two protrusions are drivingly connected with the cam mechanism of the computer flat knitting machine. The tail 43 is smooth at the end and abuts on the surface of the needle plate, so that the long needle can remain stable when the cam mechanism drives the long needle.

[0065] And another long foot needle, suitable for the case that the triangular groove is far away from the needle in the triangular mechanism. In this case, to realize the driving connection between the long foot needle and the driving block, compared with the long foot needle in the previous case, the head and the middle section of the long foot needle are provided with an extension section 45, which passes below the first spacing piece, and drives the head to be clamped in the groove of the needle. At the same time, it should be pointed out that, compared with the long foot needle in the previous case, the span of the head to the tail of the long foot needle in this scheme is longer, and the overall compression strength of the long foot needle is also reduced. In order to improve this case, a downward extending fulcrum 44 is arranged at the connecting position of the middle section and the extension section of the long foot needle 4, which is arranged close to the surface of the needle plate 1, so that the fulcrum can support and prevent further deformation after the long foot needle is deformed under pressure.

[0066] Working principle: The insertion pieces A and B arranged on the needle plate are staggered to form a needle groove with a width less than the thickness of the needle, and a relief groove B is formed on the insertion piece B, which is a through groove. When the needle enters the needle groove, a part of the needle is located in the relief groove B, and two adjacent needles symmetrically arranged with the insertion piece B are taken as a group, and the smooth parts of the two needles realize smooth abutment in the relief groove B, thereby replacing the insertion piece part for restraining the needle in the existing structure, and providing corresponding space for the thickening and strengthening of the needle. At the same time, during operation, first spacing pieces are arranged on the insertion pieces A and B to enhance the coordination of the insertion pieces A and B and prevent deformation of the insertion pieces A and B. Second spacing pieces are arranged on the front outgoing part of the insertion piece A to prevent deformation of the front outgoing part.

[0067] Although embodiments of the present application have been shown and described, it is to be understood that various modifications, substitutions, replacements and changes can be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A high-density needle plate structure for a computerized flat knitting machine, characterized in that: include Needle plate (1); Knitting needles (5); Insert A (2) is inserted into the needle plate (1) at equal intervals; Insert B (3) is inserted between two adjacent inserts A (2) to form two needle grooves in which the knitting needle (5) can slide. The insert B (3) has a relief groove B (31) at its front end. The relief groove B (31) extends along the needle exit direction of the knitting needle (5). Two knitting needles (5) symmetrically arranged with respect to the insert B (3) smoothly abut against each other in the relief groove B (31) on their flat side. The insert A (2) has a clearance groove A (22) which extends along the needle exit direction of the knitting needle (5) and the spring plate (52) of the knitting needle (5) slides in the clearance groove A (22); It also includes a first spacer (7), and the edge of the first spacer (7) is provided with several first spacer strips (71) at equal intervals. The first spacer strips (71) extend smoothly into the needle groove so that the opposite surfaces of the insert A (2) and the insert B (3) respectively abut against the two sides of the first spacer strip (71). The insert A (2) has a slot A (21) and the front end of the insert B (3) has a slot B (32). The inserts A (2) and B (3) arranged in parallel form a through groove A. The first spacer (7) is disposed in the through groove A. A pressure strip (6) is also inserted into the through groove A. The pressure strip (6) presses against the first spacer (7).

2. The high-density needle plate structure of a computerized flat knitting machine as described in claim 1, characterized in that: The clearance groove A (22) is a through groove.

3. The high-density needle plate structure of a computerized flat knitting machine as described in claim 1, characterized in that: The tail end of the knitting needle (5) has a tail plate (51) that slides into the needle groove between insert A (2) and insert B (3).

4. The high-density needle plate structure of a computerized flat knitting machine as described in claim 1, characterized in that: It also includes a long needle (4) that slides in the needle groove. The long needle (4) includes a head (42), a middle section (41) and a tail (43). The middle section (41) is connected to the triangular drive of the flat knitting machine. The tail (43) smoothly abuts against the surface of the needle plate (1). The head (42) passes under the first spacer (7) and is connected to the knitting needle (5) for transmission.

5. The high-density needle plate structure of a computerized flat knitting machine as described in claim 4, characterized in that: An extension section (45) is provided between the middle section (41) and the head (42). A downwardly extending fulcrum (44) is provided at the connection between the extension section (45) and the middle section (41). The fulcrum (44) is close to the surface of the needle plate (1) so that it can smoothly abut against the surface of the needle plate (1) after the long needle (4) is pressed.

6. The high-density needle plate structure of a computerized flat knitting machine as described in claim 1, characterized in that: The front end of the insert A (2) is provided with a slot C (23). The slots C (23) on the parallel inserts A (2) form a through groove B. A second spacer (8) is provided in the through groove B. Several second spacer strips (81) are arranged at equal intervals on the second spacer (8). The second spacer strips (81) are smoothly inserted into the gap between the two inserts A (2).

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