Computerized flat knitting machine yarn pressing device

Abstract

The utility model discloses a computerized flat knitting machine yarn pressing device which comprises two small needle plates, the small needle plates are fixed on a needle bed in an inverted V shape, a plurality of first guide grooves are formed in the opposite sides of the two small needle plates in a comb shape, and two through grooves extending in the length direction of the small needle plates are further formed in the small needle plates. The sinker comprises a sinker body, a line pressing part connected to the front end of the sinker body and a piece heel connected to the back of the sinker body, the piece heel is arranged to be higher than the first guide groove, two arc-shaped grooves are further formed in the sinker body, and virtual circles where the two arc-shaped grooves are located are coaxially arranged; and after the first steel wires are inserted into the through grooves, the first steel wires synchronously penetrate into the corresponding arc-shaped grooves. According to the scheme, through the mode, the solid axis of a traditional sinker is blurred so as to meet the assembly requirement of a high-density computerized flat knitting machine in a novel knitting needle arrangement mode.

Description

Technical Field

[0001] The utility model relates to a yarn pressing device, in particular to a yarn pressing device for a computerized flat knitting machine. Background Art

[0002] With the innovation of technology, the arrangement density of knitting needles on computer flat knitting machines is getting higher and higher, and the gaps between knitting needles are getting smaller and smaller. Especially in new high-density flat knitting machines, in order to minimize the space occupied by knitting needles on the needle plate, two knitting needles are often used as a group. The knitting needles are abutted against each other by the side surfaces to replace the traditional insert guide mechanism. Then there is no gap between the two knitting needles. At this time, the rotating shaft part of the traditional sinker will not be able to pass through the gap between the tissue needles and connect to the needle plate, that is, the flipping and sinking method of the traditional sinker with the steel wire on the needle plate as the rotating shaft can no longer be realized. For this reason, it is necessary to develop a yarn pressing device that can adapt to the arrangement of knitting needles on the existing high-density computer flat knitting machines. Utility Model Content

[0003] The utility model aims to provide a yarn pressing device for a computerized flat knitting machine to solve the problem that the conventional sinkers existing in the existing high-density knitting needles are not applicable.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A yarn pressing device for a computerized flat knitting machine, comprising

[0006] Small needle plates, the small needle plates have two pieces and are fixed on the needle bed in an inverted "V" shape, the two small needle plates are provided with a plurality of first guide grooves in a comb shape on opposite sides thereof, and the small needle plates are also provided with two through grooves extending along the length direction of the small needle plates;

[0007] A sinker, the sinker comprising a sinker body, a line pressing portion connected to the front end of the sinker body, and a heel connected to the back of the sinker body, the heel being arranged higher than the first guide groove, and the sinker body being further provided with two arc grooves, the virtual circles where the two arc grooves are located being arranged coaxially;

[0008] The first steel wire, after being inserted into the through groove, simultaneously penetrates into the corresponding arc groove.

[0009] Preferably, the two arc-shaped grooves are located on trajectory lines of virtual circles with different diameters.

[0010] Preferably, the wire pressing part includes a wire pressing part body, the front end of the wire pressing part body has a tip extending outward, the wire pressing part body and the tip form a limiting groove, and when the sinker sinks, the tips on the left and right opposite sinkers are staggered and pressed on the yarn respectively.

[0011] Preferably, the needle bed is also equipped with two rows of tooth plates corresponding to the small needle plates one by one, and a gap is left between two adjacent pieces of the two rows of tooth plates to form a second guide groove, and the second guide groove is opposite to the first guide groove one by one. A second steel wire is passed through each row of tooth plates, and after the sinker sinks into place, the second steel wire enters the bottom of the limit groove.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. This solution eliminates the need for the traditional sinker to be connected to the axis (passing through two knitting needles) on the needle bed by opening two arc-shaped grooves with the same axis on the sinker, so as to adapt to the narrow space caused by the two knitting needles abutting against each other as a reference in the existing high-density computer flat knitting machine, and the inconvenience and penetration of the axis part of the traditional sinker.

[0014] 2. The two arc grooves on the sinker are on virtual circles of different weights, that is, during the flipping and sinking process of the sinker, it can only work smoothly if the virtual center of the two arc grooves is accurately positioned, that is, the accuracy of the flipping and sinking of the sinker is guaranteed by double positioning.

[0015] 3. In this scheme, the tip parts of the two opposite left and right sinkers are offset from each other. When weaving, the drive of the signal can ensure that one of the two sinkers is pressed on the yarn, thereby reducing the probability of floating yarn during weaving.

[0016] 4. A second steel wire is passed through the tooth plate. During the sinking process of the sinker, when the second steel wire enters the bottom of the limiting groove, the sinker sinks into place to ensure that the yarn is not over-pressed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 It is the front view of the utility model;

[0019] Figure 3 It is a schematic diagram of the sinker in the utility model in the state of being turned up after being pushed by the sinker;

[0020] Figure 4 It is a schematic diagram of the sinker in the utility model in a descending state under the push of the sinker;

[0021] Figure 5 It is a schematic diagram of the structure of the sinker;

[0022] Figure 6 It is a structural diagram of the small needle plate.

[0023] Figure numerals: 1. small needle plate 11. first guide groove 12. through groove 2. sinker 21. sinker body 211. arc groove 22. wire pressing part 221. wire pressing part body 222. tip 223. limit groove 23. plate heel 3. first steel wire 4. tooth plate 41. second guide groove 5. second steel wire 6. insert 7. pressure strip. DETAILED DESCRIPTION

[0024] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0027] like Figures 1 to 4 The yarn pressing device of a computerized flat knitting machine shown in the figure comprises two small needle plates 1 and a plurality of sinkers 2.

[0028] It should be noted that the two small needle plates are in an inverted "V" shape and are fixed on the needle bed. Specifically, a through hole is opened at one end of the small needle plate, and a pressure strip 7 is installed in the needle bed insert 6. The pressure strip has a screw hole, and the small needle plate is fixed to the pressure strip by bolts. Figure 1 As shown, a row of first guide grooves 11 are respectively provided on the opposite side of the two small needle plates so that the small needle plates have a comb-like structure. Simultaneously, two through grooves 12 are provided in the length direction of the small needle plates, and the two through grooves are perpendicular to the first guide grooves.

[0029] like Figure 1 As shown, the sinker 2 is inserted in the first guide groove, and can be pushed by the signal of the computer flat knitting machine to achieve the sinking in the first guide groove, thereby realizing the thread pressing action of the yarn during the knitting process. It should be noted that in order to cope with the high-density arrangement of the new knitting needles in the computer flat knitting machine (the knitting needles are grouped in pairs, abutting each other as the reference surface, and the gap between the two knitting needles for the sinker of the traditional structure to pass through is too small). The sinker in this scheme overcomes this problem by virtualizing the rotation axis. Specifically, in this scheme, the sinker 2 includes a sinker body 21, the front end of the sinker body is connected to a thread pressing part 22, and the back of the sinker is connected to a heel 23. The thread pressing part can press the yarn when the sinker flips and sinks to complete the yarn pressing action, and the heel extends out of the first guide groove of the small needle plate to be able to connect with the signal part that moves back and forth, and the heel is pushed to change position by the signal. It should be noted that in order to ensure the stability of the movement trajectory of the sinker during the process of the sinker pushing the heel, two arc grooves 211 are provided on the sinker body 21. The two arc grooves have the same center. When the heel is pushed, if the entire sinker can flip around the center of the two arc grooves, the stability of its movement trajectory will be guaranteed.

[0030] To this end, during the process of the sinker flipping and sinking, it is necessary to guide the sinker so that the sinker can move along the trajectory of the two arc grooves. Specifically, a first steel wire 3 is inserted into each of the two through grooves 12 of the needle plate. Figure 3 , Figure 4 As shown, the two first steel wires penetrate the through grooves and also penetrate into the corresponding arc grooves. When the sinker flips, it is constrained by the first steel wires and rotates around the virtual centers of the two arc grooves. It should be noted that in the above embodiment, in order to ensure the stability of the sinker flipping, the first steel wire is tangent to the groove wall of the arc groove.

[0031] In addition, the above scheme also has the following preferred mode. Specifically, the two arc grooves 211 are on the trajectory of virtual circles of different diameters. That is, the centers of the virtual circles where the two arc grooves are located must remain coaxial to ensure smooth and stable flipping of the sinker in the future. This scheme uses double circles to locate the center of the circle to achieve higher accuracy in virtual center positioning, ensuring that the subsequent yarn pressing action can be completed smoothly.

[0032] It should also be noted that in a computerized flat knitting machine, the minimum distance between two opposite teeth is usually called a "hole" in the industry. The size of the hole affects the needle movement space of the knitting needle. The smaller the hole opening, the smaller the seam of the clothes made. The smaller the seam, the better the clothes and the higher the quality. One of the determining factors of the size of the hole opening is the stability of the sinker in pressing the yarn. In this solution, if Figure 1 , Figure 4 As shown, in two opposite rows of sinkers, the parts of the two sinkers facing each other that extend between the two tooth plates are staggered with each other. Figure 1 , Figure 4 As shown, the pressing part 22 of the sinker includes a pressing part body 221, and a tip 222 extending outward is provided on the front end of the pressing part body. When the sinker turns down and sinks, the tip extends to the outside of the tooth plate to perform a pressing action on the yarn. It should be noted that in this scheme, the thickness of the pressing part is thinner than the thickness of the sinker body, so as to ensure that when the two relative sinkers are in a state of turning down and sinking at the same time, the tip parts of each other can be staggered to achieve a cross and simultaneous pressing action on the yarn. Then, even if one of the two relative sinkers avoids the shaking table and turns up and retreats, the tip on the other sinker can still extend through the center line to perform a pressing action on the yarn.

[0033] It should also be noted that if Figures 1 to 4 As shown, two rows of tooth-mouth pieces 4 are also installed on the needle bed, and these two rows of tooth-mouth pieces correspond one to one with the small needle plate fixed on the needle bed above. In addition, a gap is left between two adjacent tooth-mouth pieces in the two rows of tooth-mouth pieces to form a second guide groove 41. When the sinker turns down and sinks, the wire pressing part 22 of the sinker enters the second guide groove and is guided by the second guide groove. It should be noted that the tip 222 of the wire pressing part extends out of the tooth-mouth piece after the sinker is pressed down to apply a downward pressure to the yarn. However, in order to ensure that the sinker does not sink too much, that is, it does not apply excessive downward pressure to the yarn, a second steel wire 5 is pierced on each row of tooth-mouth pieces. After the sinker sinks into place, the second steel wire enters the bottom of the limit groove in the wire pressing part, so as to block the sinker.

[0034] Working principle: When knitting, before the coil X passes through the knitting needle hook, the sinker 2 pushes the heel 23 under the action of the external signal triangle, and the sinker 2 rotates until the tip 222 of the pressing part 22 does not expose the tooth plate 4. After the loop is formed, the sinker 2 pushes the heel 23 to rotate to the tip of the pressing part 22 to expose the tooth plate under the action of the external signal triangle, and the left and right sinkers are in a crossed state, pressing the coil X to move downward.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A yarn pressing device for a computerized flat knitting machine, characterized in that: include A small needle plate (1), the small needle plates (1) having two pieces and being fixed on the needle bed in an inverted "V" shape, the two small needle plates (1) having a plurality of first guide grooves (11) formed in a comb shape on opposite sides thereof, and the small needle plates (1) also having two through grooves (12) extending along the length direction of the small needle plates (1); A sinker (2), the sinker (2) comprising a sinker body (21), a line pressing portion (22) connected to the front end of the sinker body (21), and a heel (23) connected to the back of the sinker body (21), the heel (23) being arranged higher than the first guide groove, the sinker body (21) also being provided with two arc grooves (211), the virtual circles where the two arc grooves (211) are located being arranged coaxially; A first steel wire (3), after being inserted into the through groove (12), the first steel wire (3) simultaneously passes into the corresponding arc groove (211).

2. A yarn pressing device for a computerized flat knitting machine as claimed in claim 1, characterized in that: The two arc-shaped grooves (211) are located on trajectory lines of virtual circles with different diameters.

3. A yarn pressing device for a computerized flat knitting machine as claimed in claim 1, characterized in that: The wire pressing part (22) comprises a wire pressing part body (221), the front end of the wire pressing part body (221) has a tip (222) extending outwards, the wire pressing part body (221) and the tip (222) form a limiting groove (223), and when the sinker (2) sinks, the tips (222) on the left and right opposite sinkers (2) are staggered and respectively pressed on the yarn.

4. A yarn pressing device for a computerized flat knitting machine as claimed in claim 3, characterized in that: The needle bed is also provided with two rows of toothed plates (4) corresponding to the small needle plates (1) one by one, a gap is left between two adjacent rows of toothed plates (4) to form a second guide groove (41), the second guide groove (41) is corresponding to the first guide groove (11) one by one, and a second steel wire (5) is passed through each row of toothed plates (4), and after the sinker (2) sinks into place, the second steel wire (5) enters the bottom of the limiting groove (223).

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