A groove needle core offset type pressure-deficient knitting mechanism for warp knitting machine

Abstract

The present invention relates to a groove needle core offset type low-pressure weaving mechanism for a warp knitting machine, comprising a jacquard device, a needle core, a needle core groove and a needle body, the needle core vertically penetrates the needle core groove, the needle core driving mechanism is used to drive the needle core to move up and down to open or close the needle mouth of the needle body, the needle core groove is used to limit and guide the needle core, the jacquard device is arranged at the bottom of the needle core, the jacquard device is used to drive the needle core to offset when low-pressure weaving is required, so that the needle core is separated from the needle core driving mechanism, and then the needle mouth of the needle body remains in an open state. The present invention introduces groove needles into the low-pressure warp knitting machine to replace traditional hook needles and pattern pressure plates, and through the jacquard device and the separate needle core, independent low-pressure weaving can be achieved at each knitting point, so that warp knitted fabrics of any color can be knitted according to needs, and electronic needle selection for low-pressure warp knitting tissue weaving is realized, and the warp knitting colors can be made richer by a simple method.

Description

Technical Field

[0001] The invention relates to the field of pressure-deficient fabric knitting equipment, and in particular to a groove needle core offset type pressure-deficient knitting mechanism for a warp knitting machine. Background Art

[0002] Traditional warp knitting fabrics with insufficient pressure can only be knitted by using a crochet warp knitting machine with a pattern pressing plate. The knitting pattern is single, and when changing the pattern, the position of the pattern pressing plate needs to be replaced, and the pattern pressing plate needs to be customized according to the pattern, which is inconvenient to use.

[0003] The main innovative research direction of people in the weaving of warp knitting with insufficient pressure is to improve the control technology of the pattern pressing plate: ① The pattern pressing plate has the function of horizontal movement while pressing the needle; ② The pattern pressing plate has the function of intermittent movement to cooperate with the flat pressing plate; ③ Multiple pattern pressing plates have the function of changing control. However, no matter which form of change is adopted, these research directions are inseparable from the pattern pressing plate, and can only control the pattern mechanically, but cannot realize the design of the pattern by electronic single-selection needle.

[0004] At present, in the design and weaving production market of other pattern structures, crochet warp knitting machines have long been eliminated and completely replaced by groove needle warp knitting machines. The only difference is that crochet knitting still has a place in the field of pressure-deficient warp knitted fabrics that require pattern pressure plates to control the knitting. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a groove needle core offset type pressure-deficient knitting mechanism for a warp knitting machine in view of the above problems and requirements.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A groove needle core offset type low-pressure weaving mechanism for a warp knitting machine comprises a jacquard device, a needle core, a needle core groove and a needle body, wherein the needle core vertically penetrates the needle core groove, the needle core driving mechanism is used to drive the needle core to move up and down so that the needle opening of the needle body is opened or closed, the needle core groove is used to limit and guide the needle core, and the jacquard device is arranged at the bottom of the needle core. The jacquard device is used to drive the needle core to deviate when low-pressure weaving is required, so that the needle core is separated from the needle core driving mechanism, thereby keeping the needle opening of the needle body open, and is also used to keep the needle core in the initial position when low-pressure weaving is not required, so that the needle core can move up to close the needle opening under the drive of the needle core driving mechanism.

[0008] Furthermore, a needle core butt is horizontally arranged on one side of the needle core close to the jacquard device, a connecting block is arranged on the upper end of the needle core driving mechanism, and the needle core butt is embedded in the first groove on the side of the connecting block when the needle core is in the initial state.

[0009] Furthermore, a second groove is vertically opened at the bottom of the needle core, and the jacquard device includes a jacquard drive mechanism and a straight bar, the upper end of the straight bar is embedded in the second groove, and the jacquard drive mechanism is used to drive the needle core to move in the horizontal direction by driving the straight bar to translate or rotate in a vertical plane, so that the heel of the needle core is disengaged from the first groove or returns to an initial state. When the heel of the needle core is in the initial state, it is located in the first groove and the straight bar is in a vertical state.

[0010] After adopting the above technical solution, the present invention has the following advantages compared with the prior art:

[0011] The present invention introduces groove needles into the lack-pressure warp knitting machine to replace the traditional hook needles and pattern pressure plates. Through the jacquard device and the separate needle core, the jacquard device drives the needle core to shift or reset, so as to independently control whether the needle mouth at each knitting point is closed, thereby realizing independent lack-pressure knitting at each knitting point. Therefore, warp knitted fabrics of any color can be knitted according to needs, realizing electronic needle selection for lack-pressure warp knitting tissue knitting, and adopting a simple method to make the warp knitting color richer.

[0012] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the present application when weaving under pressure;

[0014] Figure 2 It is a schematic diagram of the structure of the present application during normal weaving.

[0015] 1. Needle core; 2. Needle body; 3. Needle core heel; 4. First groove; 5. Jacquard drive mechanism; 6. Straight bar; 7. Needle core groove; 8. Connecting block DETAILED DESCRIPTION

[0016] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0017] During the loop-forming movement of the groove needle warp knitting machine, whether the needle core rises to close the needle mouth of the needle body and whether the knitting needle pads the new yarn. If the knitting needle does not pad the yarn and the needle core does not close the needle mouth, there is only the old coil in the needle hook, which is woven on the fabric to form an elongated coil, which is the lack-pressure jacquard structure. To achieve the weaving of lack-pressure warp knitted fabrics, two problems must be solved: ① Whether to pad the yarn; ② Whether to close the mouth.

[0018] ① Whether to pad yarn is related to threading yarn. You can use a yarn guide needle without threading yarn (similar to a crochet warp knitting machine) or a jacquard yarn guide needle without padding yarn; ② Whether to close the mouth, on a slot needle warp knitting machine, it is to control the rising movement of the needle core. If the needle core rises, the needle mouth is closed. If the needle core does not rise or does not rise to the right position, it will not be closed.

[0019] Let's take the loop forming mechanism of a groove needle warp knitting machine as an example. To achieve the control of the needle core rising or not rising, the needle core cannot be a cast whole but must be a separate structure and there must be a needle core groove to place the needle core for easy control of the needle core rising and falling. In order to allow more placement space for the needle core and its attached control mechanism, the needle body that coordinates with the needle core is preferably a cast structure: ① reduce the placement space of the needle body, ② make the needle body uniform and stable in structure.

[0020] From the motion curve of the loop-forming parts of the groove-needle warp knitting machine, it can be seen that the normal movement of the needle core is to rise and close the needle mouth. To achieve pressure-deficient knitting without rising or closing the needle core, the following should be done: ① Although the needle core rises, the needle body begins to descend and the needle core descends in advance (descends during the period of 240° to 350° of the main shaft), so that the needle core is always in the needle body and does not close, so that the old coil can return to the needle hook again to achieve pressure-deficient knitting; ② The needle core is always in the needle body and does not rise or close, which is equivalent to the needle core not rising and closing the needle mouth during the period of 100° to 350° of the main shaft, and also enables the old coil to return to the needle hook again to achieve pressure-deficient knitting.

[0021] Therefore, the method adopted by the present invention is to use the device of the present application at each knitting point, configure a corresponding jacquard device for each needle core 1, and realize independent pressure-deficient knitting for each knitting point. When the knitting point needs pressure-deficient knitting, the jacquard device is controlled to extend to drive the needle core to deviate from the connecting block above the needle core driving mechanism. When the knitting point needs normal knitting, the jacquard device is controlled to drive the needle core to return to the initial position. By independently controlling each knitting point, it is possible to weave various colors of pressure-deficient fabrics according to needs.

[0022] The groove needle core offset type pressure-deficient knitting mechanism for a warp knitting machine of the present invention can be installed on a loop forming mechanism of a groove needle warp knitting machine, and other components such as a sinker and a yarn guide needle are consistent with those of a traditional groove needle warp knitting machine.

[0023] ① Needle body: The needle body 2 is cast into one piece in the form of casting, and the lower part of the needle body is connected to the main shaft through the needle body and needle core driving mechanism;

[0024] ② Needle core: The needle core 1 is of a separate type and is inserted into the needle core groove 7; the middle and lower part of the needle core is inserted into the needle core groove, and the tail of the needle core forms a second groove for the straight bar 6 at the jacquard head end to be inserted, and it swings under the control of the jacquard drive mechanism 5; the needle core heel 3 is inserted into the first groove 4 of the connecting block 8 at the upper end of the needle core drive mechanism, and is driven up and down by the needle core drive mechanism. When the jacquard drive mechanism 5 rotates or moves, it drives the needle core to swing so that the needle core heel is separated from the first groove, and the corresponding needle core swings out of the control of the needle core drive mechanism and does not rise with the needle core drive mechanism, forming pressure-deficient knitting.

[0025] like Figure 2As shown, when the knitting point does not need to be knitted under pressure, the jacquard driving mechanism remains stationary, the needle core heel is located in the first groove on the connecting block, and the needle core moves upward under the drive of the needle core driving mechanism to close the needle opening;

[0026] like Figure 1 As shown, when the knitting point needs to be knitted without pressure, the jacquard drive mechanism rotates or moves, and drives the needle core to deviate from the connecting block through the straight bar. The corresponding needle core swings out of the control of the needle core drive mechanism and does not rise with the needle core drive mechanism, so that the needle mouth remains normally open, and the old coil is retracted from the needle bar of the needle body into the needle hook again to form lack-pressure knitting.

[0027] When it is necessary to switch to the normal state, the jacquard drive mechanism returns to the initial position, the needle core returns to its original position, the needle core heel is inserted into the first groove on the connecting block, and the needle opening is closed under the drive of the needle core drive mechanism.

[0028] The above is an example of the best implementation of the present invention, and the parts not described in detail are common knowledge of ordinary technicians in the field. The protection scope of the present invention shall be based on the content of the claims, and any equivalent transformation based on the technical enlightenment of the present invention is also within the protection scope of the present invention.

Claims

1. A groove needle core offset type pressure-deficient knitting mechanism for a warp knitting machine, characterized in that: The jacquard device comprises a needle core (1), a needle core groove (7) and a needle body (2), wherein the needle core (1) vertically penetrates the needle core groove (7), the needle core driving mechanism is used to drive the needle core (1) to move up and down, so that the needle opening of the needle body (2) is opened or closed, the needle core groove (7) is used to limit and guide the needle core (1), the jacquard device is arranged at the bottom of the needle core (1), the jacquard device is used to drive the needle core (1) to deviate when low-pressure knitting is required, so that the needle core (1) is separated from the needle core driving mechanism, thereby keeping the needle opening of the needle body (2) in an open state, and is also used to keep the needle core (1) in an initial position when low-pressure knitting is not required, so that the needle core (1) can be driven by the needle core driving mechanism to move up to close the needle opening; A needle core heel (3) is horizontally arranged on one side of the needle core (1) close to the jacquard device, a connecting block (8) is arranged on the upper end of the needle core driving mechanism, and when the needle core (1) is in an initial state, the needle core heel (3) is embedded in a first groove (4) on the side of the connecting block (8); A second groove is vertically formed at the bottom of the needle core (1). The jacquard device comprises a jacquard driving mechanism (5) and a straight bar (6). The upper end of the straight bar (6) is embedded in the second groove. The jacquard driving mechanism (5) is used to drive the straight bar (6) to translate or rotate in a vertical plane to drive the needle core (1) to move in a horizontal direction, so that the needle core heel (3) is separated from the first groove (4) or returns to an initial state. When the needle core heel (3) is in the initial state, it is located in the first groove (4) and the straight bar (6) is in a vertical state.

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