A selection knitting system for a flat knitting machine

Abstract

The present application relates to the field of computerized flat knitting machine, and particularly relates to a needle selection and knitting system of a flat knitting machine, which comprises a knitting and turning triangle device and a density triangle arranged on a cam plate, the density triangle is arranged on both sides of the knitting and turning triangle device and can move relative to the knitting and turning triangle device, the knitting and turning triangle device at least comprises a turning needle channel and a connecting needle channel, and the density triangle is provided with a turning needle guide rail, and when the density triangle on one side moves relative to the knitting and turning triangle device, the upper end outlet of the turning needle guide rail can be connected with the inlet of the turning needle channel on the same side. By using the above scheme, the cam structure can be simplified, the knitting stroke can be shortened, and the work efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of computerized flat knitting machines, and specifically to a needle selection knitting system for a flat knitting machine. Background Technology

[0002] A computerized flat knitting machine is a double-needle-plate weft knitting machine (based on a double-needle plate). Through the knitting head and the cam mechanism on the cam base plate of the knitting head, the cam system drives the knitting needles located in the needle grooves of the needle bed (needle plate) to move up and down along the needle grooves as the knitting head reciprocates along the guide rail. With the cooperation of the cam mechanism and the tensioning mechanism, the knitting of the fabric is completed. It generally includes normal loop knitting, hanging loop knitting, and transfer knitting functions. The combination needles of a flat knitting machine (sometimes referred to simply as knitting needles) generally include hook needles with hooks, long needles (also called stitches or long-legged needles, which function with the knitting cams), spring needles (whose heels function with the hanging loop pressure block and the clearing needle cam), and needle selectors (which function with the needle selector).

[0003] Among them, receiving and turning the stitch are two different processes in a loop-shifting motion. Simply put, the process of the hook on one side of the needle bed sending the loop out is called "turning the stitch," and the process of the hook on the other side of the needle bed receiving the loop is called "receiving the stitch." The hook on the "turning the stitch" side has a higher exit position, and the hook on the "receiving the stitch" side has a lower exit position (here, "high" and "low" refer to the exit position relative to the needle bed opening; in reality, the hook needs to move upwards whether turning the stitch or receiving the stitch).

[0004] Referring to existing technologies such as CN109468738B and CN207775475U (generally, flat knitting machines use multiple knitting systems, and each knitting system includes the above-mentioned triangles), the knitting area at the top generally consists of turning stitches, forming loops, and joining stitches from top to bottom. Among them, turning stitches and forming / joining stitches correspond to the two needle heels of long needles.

[0005] In the above structure, when weaving a row of loops, the needle selection is performed first, based on the different weaving functions that each needle needs to participate in. The needles that need to participate in the weaving are selected from the zero position to the middle position. Then, a second needle selection is performed to divide these needles into the middle position and the high position (the middle position can also be understood as the needles that are not selected by the second needle selection).

[0006] However, the above knitting method is mainly for general use. When all the stitches in a row of knitting of a knitting system (three systems means there are three knitting systems) are selected as either turning stitches or joining stitches (that is, in a row of knitting of a knitting system, there is no situation where both turning stitches and joining stitches are selected), its work efficiency and triangle structure can be optimized.

[0007] Therefore, the inventors conducted further research and developed a needle selection knitting system for a horizontal knitting machine, which led to this invention. Summary of the Invention

[0008] The purpose of this invention is to provide a needle selection knitting system for a horizontal knitting machine, which simplifies the triangular structure, shortens the knitting stroke, and improves work efficiency.

[0009] To achieve the above objectives, the technical solution of the present invention is as follows: A needle selection knitting system for a flat knitting machine, comprising: The braiding and flipping triangular device and the density triangular device are set on the triangular base plate. The density triangular device is set on both sides of the braiding and flipping triangular device and can move relative to the braiding and flipping triangular device. A braiding flip-triangle device includes at least a flip-pin channel and a receiving pin channel; The density triangle is equipped with a needle-flipping guide rail; When the density triangle on one side moves relative to the braiding flipping triangle device, the upper exit of its flipping needle guide rail can connect with the entrance of the flipping needle channel on the same side.

[0010] The needles on each side of the needle bed are arranged side by side along the direction of the machine head's movement. Therefore, during the back-and-forth movement of the machine head, a row of knitting is referenced to the loops knitted by the needles arranged side by side on the needle bed. According to existing technology, from top to bottom, it generally includes a turning channel, a looping channel, a hanging loop "channel", and a connecting channel. The turning channel is far away from the density triangle. Both looping knitting and hanging loop (tucked loop) knitting require starting the needle from the starting triangle and separating at the starting point of the hanging loop pressure block corresponding to the upper and lower middle mountain triangles. The looping channel is located between the upper and lower middle mountain triangles, with the top of the starting triangle as the starting point of the "looping channel". The hanging loop slides across the surface of the lower middle mountain triangle (therefore, strictly speaking, the hanging loop does not have a clear "channel" structure). The connecting channel is formed by the cooperation of the lower middle mountain triangle and the disc mountain triangle.

[0011] In the existing technology, the knitting needle needs to pass through two needle selectors, one needle selection (pre-selection) and the other needle selection, to determine whether the knitting needle should move from the high position or the middle position; and after passing through the high needle selection triangle in the needle selection area, it needs to move laterally a significant distance before entering the needle turning channel.

[0012] The above-mentioned technical solution guides the needle flipping or joining in a row of knitting within the same system using a density triangle, thus eliminating the need for two needle selections. This not only simplifies the needle flipping / joining process but also shortens the knitting stroke when the needles are knitting in loops, improving work efficiency and reducing the operating load on the knitting head.

[0013] Furthermore, the braiding and flipping triangular device also includes a looping channel, which is a symmetrically arranged bidirectional channel.

[0014] The term "two-way channel" here means that the needle can travel back and forth in both directions.

[0015] Furthermore, the knitting flipping cam device is located in the knitting area of ​​the cam base plate. Corresponding to the knitting area and located below it is the needle selection area. The needle selection area is equipped with a high-position needle selection cam, and the two ends of the looping channel correspond to the top of a high-position needle selection cam.

[0016] The correspondence here refers to the same needle running as the reference. After the needle is lifted by the high needle selection triangle, it immediately enters the loop forming channel (the knitting head moves back and forth, so the loop forming channel is set symmetrically). The "immediately" here does not specifically refer to an "instant" without any time interval, but generally refers to a very short time. In the existing technical solution, the top of the high needle selection triangle corresponds to the starting point of the starting triangle, and it needs to move a certain distance to reach the end of the "loop forming channel" (the projection of the loop forming channel is consistent with the length of the hanging block below it).

[0017] Furthermore, the density triangle includes a needle-turning guide rail and a yarn-bending rail. The needle-turning guide rail is located above the yarn-bending rail. The needle-turning guide rail is formed by slotting on the density triangle, and the yarn-bending rail is formed by the side edge of the density triangle. The density triangle can be moved to connect the needle-turning guide rail with the needle-turning channel.

[0018] Furthermore, a lifting block is provided below the knitting flipping cam device. On the same side of the same knitting system, the top of the high needle selection cam, the starting point of the flipping needle channel, and the starting point of the lifting block can be located on the projection of the same needle.

[0019] In a flat knitting machine, when the needle heel is pressed by the needle-lifting block, it cannot form a loop but instead lifts the needle. In the existing technology, the top of the high-position needle selection triangle corresponds to the starting point of the starting triangle, not the starting point of the turn-over channel and the needle-lifting block.

[0020] Furthermore, the knitting and flipping triangle device includes a flipping needle channel, a loop forming channel, and a needle receiving channel, which are arranged sequentially from top to bottom; The needle-turning channel includes needle-turning inlets and needle-turning outlets on both sides, with the needle-turning inlets on each side located above the needle-turning outlets. The looping channels are symmetrically arranged on the left and right, and the triangle at the top of the looping channel is the same triangle as the triangle at the bottom of the turning needle channel; The needle receiving channel is located below the triangle at the bottom of the looping channel. A swing triangle is provided in the needle receiving channel. When the left side of the needle receiving channel is the needle receiving entrance, the end of the swing triangle swings to the right. When the right side of the needle receiving channel is the needle receiving entrance, the end of the swing triangle swings to the left.

[0021] This is a preferred embodiment of the braided flip-triangle device.

[0022] Furthermore, the swing triangle is pivoted in the middle of the mountain triangle, and the end of the swing triangle protrudes from the mountain triangle, with the mountain triangle limiting the swing triangle on both sides.

[0023] The shape of the disc mountain triangle here is different from that of the disc mountain triangle in the prior art, and its function when combined with the swing triangle is equivalent to that of the disc mountain triangle in the prior art.

[0024] Furthermore, the needle-turning channel, the loop-forming channel, and the needle-receiving channel are formed on the same triangular assembly, and the triangular assembly is telescopically or fixedly arranged relative to the triangular base plate.

[0025] The triangle assembly is used here to distinguish it from the triangle base plate shared by all triangles in the prior art. That is, the triangles can be set on the same assembly, and then the assembly can be set on the traditional triangle base plate.

[0026] Furthermore, when joining needles, after the knitting needle passes the position of the top of the high-position needle selection triangle, the heel of the long needle immediately enters the joining needle channel.

[0027] The meaning of "immediately" here is consistent with the previous explanation.

[0028] Furthermore, the knitting and flipping triangle device includes a flipping needle channel, a loop forming channel, and a needle receiving channel, which are arranged sequentially from top to bottom; Both sides of the needle-turning channel are provided with needle-turning inlets and needle-turning outlets. The needle-turning inlets on each side are located above the needle-turning outlets. When the needle enters from one needle-turning inlet, it exits from the other needle-turning outlet. The needle-turning inlet on one side does not serve as the needle-turning outlet on the other side. The needle-turning inlet and the needle-turning channel are connected by a stepped structure. Once the needle heel enters from one needle-turning inlet, it cannot exit from the other needle-turning inlet.

[0029] The stepped structure with varying heights restricts the needle heel from passing in the opposite direction, preventing the needle inlet from becoming the needle outlet.

[0030] By adopting the above solution, the present invention has the following advantages compared with the prior art: By switching between needle turning and needle joining through the density triangle, the needles that have passed through the high needle selection triangle (the position at the top) can immediately enter the needle turning or needle joining channel without pre-selection (one-time needle selection). This improves knitting efficiency in terms of both needle selection steps and structural formation; at the same time, it can also optimize the structure of the triangle base plate itself. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the three existing weaving systems; Figure 2 This is a schematic diagram of the present invention; Figure 3 This is a schematic diagram of the density triangle; Figure 4It is a schematic diagram of the trajectory of turning stitches, forming loops / hanging eyelets on the density triangle; Figure 5 This is a schematic diagram of the trajectory of turning / joining stitches, forming loops / hanging stitches on the turning / joining triangular device in knitting; Label Explanation Density triangle 1, needle roll guide rail 11, yarn bend rail 12 (Booting and flipping) Triangle device 2, stitch flipping channel 21, loop forming channel 22, stitch joining channel 23, Swinging triangle 24, 3. Lifting eye pressure block; 4. Needle selector; 5. High-position needle selection triangle; 6. Triangle base plate. Return triangle 7, reset triangle 8. Detailed Implementation

[0033] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like Figure 1 The general prior art shown, taking the knitting system on the left as an example, has a stitch-turning path from left to right as shown by the red line in the figure. It passes above the density triangle 01 on the left and enters the stitch-turning triangle, without interacting with the density triangle during this process. The position corresponding to the top of the high-position needle selection triangle 03 in the needle selection area is the starting point of the starting triangle 02 (see reference). Figure 1 The dotted line indicates that, regardless of whether it's loop knitting or round knitting, after selecting the needle, it passes through the high needle selection triangle (the high needle selection triangle is in working condition during round knitting, and retracts into the triangle base during loop knitting) before entering the starting triangle. In this type of triangle base, if the needle moves from right to left relative to the triangle base during pre-selection (first needle selection), then the second needle selection (re-selection) moves from left to right and passes through the needle selection triangle again. However, pre-selection is essentially a preparatory action for the same row of knitting and cannot be distinguished solely by the direction of the flat knitting machine's movement.

[0035] Since the hanging loop / knitting process is identical to existing technology except for the shortened stroke, the following instructions will focus on turning and joining stitches, and will also be explained using a triangular base plate with a specific structure.

[0036] like Figure 2 As shown, a needle selection knitting system for a horizontal knitting machine is mounted on a triangular base plate 6 (three knitting systems are shown in the figure). It includes a triangular device 2 with a knitting and turning function. The triangular device 2 has density triangles 1 on both sides, which can move up and down relative to the triangular device 2. The triangular device 2 is a reference... Figure 5 As shown, from top to bottom, it includes a turning channel 21, a looping channel 22, and a receiving channel 23. Generally, the needle entry point of the needle foot is composed of a return triangle 7 and a reset triangle 8, which are used to uniformly return needles from different positions to the starting position.

[0037] The turning-over channel includes turning-over inlets and outlets on both sides, with each turning-over inlet located above the turning-over outlet. The loop-forming channel is symmetrically arranged, and the triangle at the top of the loop-forming channel is the same triangle as the triangle at the bottom of the turning-over channel. The needle-receiving channel is located below the triangle at the bottom of the loop-forming channel, and a swing triangle 24 is provided in the needle-receiving channel. The swing triangle is pivotally connected to the middle of the mountain triangle 25, and the end of the swing triangle protrudes from the mountain triangle, which limits the movement of the swing triangle on both sides. Simultaneously, the turning-over channel, loop-forming channel, and needle-receiving channel are formed on the same triangle assembly, meaning that the above channels can be integrated into a single assembly structure on the triangle device. In this case, the entire triangle device can be made into a structure that extends and retracts relative to the triangle base plate, thus allowing it to be incorporated into more complex systems. If it is only used for three-system knitting, it can also be made into a structure fixed to the triangle base plate. When the left side of the needle-receiving channel is the needle-receiving inlet, the end of the swing triangle 24 swings to the right; when the right side of the needle-receiving channel is the needle-receiving inlet, the end of the swing triangle swings to the left.

[0038] The needle selection knitting system can achieve the following knitting methods: Turn the stitch: by Figure 2 Taking the knitting system on the left as an example, after the needle selector 4 pre-selects, the knitting needle moves from left to right relative to the triangular base plate (the knitting needle first moves from right to left, and then from left to right). At this time, the blue line in the figure indicates the movement trajectory of the long needle heel in the knitting needle. It first enters the needle turning guide track 11 of the density triangle 1, which is relatively low. After passing through the density triangle 1, it immediately enters the needle turning channel 21 adjacent to the density triangle 1. Since only one needle selection is performed at this time, and through the response of the density triangle 1, the selected knitting needle will only turn the needle in a row of knitting in this system, and will not connect the needle.

[0039] Structural reference of density triangle 1 Figure 3 , Figure 4 As shown, it has a needle turning guide rail 11 and a yarn bending rail 12. The needle turning guide rail 11 is located above the yarn bending rail 12. The needle turning guide rail 11 is formed by slotting on the density triangle 1. The yarn bending rail 12 is formed by the side edge of the density triangle 1. When the density triangle 1 is in a lower position, the needle turning guide rail 11 is connected to the needle turning channel 21. The yarn bending rail 12 is the needle path after the needle heel passes through the Zhongshan triangle when the flat knitting machine is performing the hanging / cloth formation.

[0040] Needle attachment: by Figure 2Taking the knitting system on the right side as an example (which does not occur simultaneously with the needle flipping mentioned above), after the needle selector pre-selects, the knitting needle moves from right to left relative to the cam base plate. The red line in the figure still indicates the movement trajectory of the long needle heel in the knitting needle. It passes under the density cam 1 and directly enters the needle insertion channel 23. This row of knitting also only performs needle insertion and does not perform needle flipping.

[0041] Circle / Hanging Eyes: The steps for hanging the eyelet / forming a circle are consistent with those in existing technologies. The needle trajectory in this embodiment is referenced... Figure 5 As shown, when forming a loop, the knitting needle is not pressed down by the hook block 3, so it rises and falls in the triangular area. The old loop completely detaches from the hook of the crochet needle, and the new yarn is hooked into a new loop and passes through the old loop. However, when knitting with a hook, it is affected by the hook block 3 and slides across the triangular surface. The old loop does not completely detach and remains on the needle latch or needle bar. At the same time, the hook catches the new yarn, forming an elongated loop. Both the old loop and the new yarn remain on the needle.

[0042] Since the needle only needs to be selected once during the turn / joining of stitches, and the density triangle 1 is used to distinguish between turn-over and joining stitches, the high-position needle selection triangle 5, used to raise the needle after the second selection, can be set on the connecting line between the starting point of the knitting channel and the starting point of the hanging stitch block 3 during the two needle selections in knitting of loops / drops. Figure 2 As shown by the dotted line on the left, compared with the existing technology, the structure of the entire triangular base plate and the layout of each triangle are more compact. Since the flat knitting machine weaves by running back and forth, a reduction of a few centimeters in a single stroke can ultimately greatly improve weaving efficiency and at the same time reduce the load on the machine head.

[0043] The above are merely specific embodiments of the present invention. Furthermore, terms such as "upper," "lower," "left," "right," and "middle" used in the present invention are for reference only and are not absolute limitations. Any non-substantial modifications made using the present invention shall be considered as infringing upon the protection scope of the present invention.

Claims

1. A needle selection knitting system for a flat knitting machine, characterized in that: include The braiding and flipping triangular device and the density triangular device are set on the triangular base plate. The density triangular device is set on both sides of the braiding and flipping triangular device and can move relative to the braiding and flipping triangular device. A braiding flip-triangle device includes at least a flip-pin channel and a receiving pin channel; The density triangle is equipped with a needle-flipping guide rail; When the density triangle on one side moves relative to the braiding flipping triangle device, the upper exit of its flipping needle guide rail can connect with the entrance of the flipping needle channel on the same side.

2. The needle selection knitting system for a flat knitting machine according to claim 1, characterized in that: The braiding and flipping triangular device also includes a looping channel, which is a symmetrically arranged bidirectional channel.

3. The needle selection knitting system for a flat knitting machine according to claim 2, characterized in that: The knitting flipping cam device is located in the knitting area of ​​the cam base plate. Corresponding to the knitting area and located below it is the needle selection area. The needle selection area is equipped with a high-position needle selection cam, and the two ends of the looping channel correspond to the top of a high-position needle selection cam.

4. A needle selection knitting system for a flat knitting machine according to claim 1 or 3, characterized in that: The density triangle includes a needle-turning guide rail and a yarn-bending rail. The needle-turning guide rail is located above the yarn-bending rail. The needle-turning guide rail is formed by slotting on the density triangle, and the yarn-bending rail is formed by the side edge of the density triangle. The density triangle can be moved to connect the needle-turning guide rail with the needle-turning channel.

5. A needle selection knitting system for a flat knitting machine according to claim 1 or 3, characterized in that: Below the knitting flipping cam device is a hanging eye pressure block. On the same side of the same knitting system, the top of the high needle selection cam, the starting point of the flipping needle channel, and the starting point of the hanging eye pressure block can be on the same needle projection.

6. A needle selection knitting system for a flat knitting machine according to claim 1 or 3, characterized in that: The braiding and flipping triangle device includes a flipping needle channel, a loop forming channel, and a needle receiving channel, which are arranged sequentially from top to bottom; The needle-turning channel includes needle-turning inlets and needle-turning outlets on both sides, with the needle-turning inlets on each side located above the needle-turning outlets. The looping channels are symmetrically arranged on the left and right, and the triangle at the top of the looping channel is the same triangle as the triangle at the bottom of the turning needle channel; The needle receiving channel is located below the triangle at the bottom of the looping channel. A swing triangle is provided in the needle receiving channel. When the left side of the needle receiving channel is the needle receiving entrance, the end of the swing triangle swings to the right. When the right side of the needle receiving channel is the needle receiving entrance, the end of the swing triangle swings to the left.

7. The needle selection knitting system for a flat knitting machine according to claim 6, characterized in that: The swing triangle is pivoted in the middle of the mountain triangle, and the end of the swing triangle protrudes from the mountain triangle. The mountain triangle limits the swing triangle on both sides.

8. The needle selection knitting system for a flat knitting machine according to claim 6, characterized in that: The needle-turning channel, the looping channel, and the needle-receiving channel are formed on the same triangular assembly, which is telescopically or fixedly arranged relative to the triangular base plate.

9. A needle selection knitting system for a flat knitting machine according to claim 1 or 3, characterized in that: When joining needles, after the knitting needle passes the position of the top of the high-position needle selection triangle, the heel of the long needle immediately enters the joining needle channel.

10. The needle selection knitting system for a flat knitting machine according to claim 1, characterized in that: The braiding and flipping triangle device includes a flipping needle channel, a loop forming channel, and a needle receiving channel, which are arranged sequentially from top to bottom; Both sides of the needle-turning channel are provided with needle-turning inlets and needle-turning outlets. The needle-turning inlets on each side are located above the needle-turning outlets. When the needle enters from one needle-turning inlet, it exits from the other needle-turning outlet. The needle-turning inlet on one side does not serve as the needle-turning outlet on the other side. The needle-turning inlet and the needle-turning channel are connected by a stepped structure. Once the needle heel enters from one needle-turning inlet, it cannot exit from the other needle-turning inlet.

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