CN108842287B - Needle selection device and method of latch needle warp knitting machine - Google Patents

Abstract

The invention discloses a needle selection device and method for a latch needle warp knitting machine, comprising a needle bed, wherein the needle bed includes a plurality of needle grooves arranged in a row according to the requirements of the machine size, and a needle groove that can move up and down is installed in the needle groove. Latch needle, the latch needle is provided with a needle butt, a cover plate is installed on the needle bed, and a slot corresponding to the needle groove is arranged on the cover plate, and a front-and-rear movement is installed in the slot. The insertion support includes an upper insertion support and a lower insertion support, the needle butt is clamped between the upper insertion support and the lower insertion support, and a support is installed under the latch needle. After adopting the above invention, the latch needle warp knitting machine can adjust the height of each knitting needle according to the process requirements during knitting, and optionally knit into loops, tucks, floating lines or some knitting needles to participate in knitting, etc. The pattern types of latch needle warp knitted fabrics, and the present invention has simple structure, convenient operation, wide adjustment range and high selectivity, which is beneficial to the development and trial production of new latch needle warp knitted fabrics.

Description

Needle selection device and method for latch needle warp knitting machine

technical field

The invention relates to the technical field of warp knitting machines, in particular to a needle selection device and method of a latch needle warp knitting machine.

Background technique

The warp knitted fabric is a knitted fabric made of one or several groups of parallel warp yarns that are inserted into a row of knitting needles along the longitudinal direction on a warp knitting machine, and are synchronously formed into loops and interlocked with each other. The loop-forming parts of the warp knitting machine mainly include knitting needles, yarn guide needles and sinkers. At present, the knitting needles on the warp knitting machine are installed on the needle bed and reciprocate up and down together with the needle bed. The warp knitting machine has not been equipped with a device for selecting needles for individual knitting needles and controlling their up and down movements, and cannot control the movement of single or multiple knitting needles.

Therefore, designing a knitting needle selection device that can realize individual needle selection and automatic needle selection has become a major focus and difficulty in current research.

At present, the utility model with the authorization announcement number CN202688628U discloses "A Fully Automatic Knitting Warp Knitting Machine with Automatic Needle Selection". The utility model is provided with a knitting mechanism and an automatic needle selection device, and the automatic needle selection device further comprises a transmission mechanism and an automatic needle selection mechanism. The automatic needle selection mechanism is controlled by the transmission mechanism to run on a linear guide rail and sequentially move to the crochet needles that do not need to participate in work. Select the needle at the corresponding pusher. After the needle selection is completed, the needle pusher plate drives the unselected crochet needles to knit through the needle pusher. When the needle needs to be re-selected, it is only necessary to push the push needle baffle to reset the selected crochet needle and re-enter the working position. The fully automatic warp knitting machine can realize automatic needle selection and needle arrangement, shorten the preparation time of production, improve the work efficiency of workers, and increase the production capacity of enterprises.

The above utility model is suitable for a crochet warp knitting machine, the device is relatively complicated, and the knitting needles only have two states of working and non-working. During the knitting process, the knitting needles participating in the work will not be further selected. limit. At the same time, although the above-mentioned automatic needle selection mechanism achieves the purpose of automatic needle selection, it does not control the up and down movement of the knitting needle, but rather prepares the needle arrangement before knitting.

The invention aims to solve the problems of automatic needle selection and control of the up and down movement of individual knitting needles in the knitting process.

SUMMARY OF THE INVENTION

In view of the above existing problems, the present invention transforms the traditional latch needle warp knitting machine, and provides a needle selection device and method for the latch needle warp knitting machine, which can optionally adjust the working position height of each knitting needle, and solves the problem of existing problems. There is a problem that the types of warp knitted fabrics are limited, which is conducive to the development and trial production of new warp knitted fabrics, thereby expanding the scope of pattern design and broadening the application fields of warp knitted fabrics.

The technical scheme adopted by the present invention to solve its technical problems is:

A needle selection device for a latch needle warp knitting machine includes a needle bed, the needle bed includes a plurality of needle grooves arranged in a row according to machine size requirements, a latch needle that can move up and down is installed in the needle groove, and the latch needle The needle is provided with a needle butt, a cover plate is installed on the needle bed, a slot corresponding to the needle slot is arranged on the cover plate, and a front-and-rear movable supporter is installed in the slot, and the The insertion support includes an upper insertion support and a lower insertion support, the needle butt is clamped between the upper insertion support and the lower insertion support, and a support is installed under the latch needle.

As an improvement of the above technical solution, the cover plate is provided with a row of grooves corresponding to the needle grooves, the grooves are opened in the grooves according to the requirements of the knitting process, and the horizontal direction of the grooves is a row, At least two rows are provided.

As an improvement of the above technical solution, the insert support is connected with a control mechanism, which is controlled to be inserted into the slot in the working state, perform needle selection, needle raising or needle pressing operations, and exit the slot in the non-working state.

As an improvement of the above technical solution, the control mechanism is a manual, electronically controlled, hydraulic or pneumatic mechanism for controlling the movement of the insert support.

As an improvement of the above technical solution, the control mechanism is provided with one group, which simultaneously controls the movement of the upper inserting support and the lower inserting support.

As an improvement of the above technical solution, the control mechanism is provided with two groups, one group controls the movement of the upper insert support, and the other group controls the movement of the lower insert support.

As an improvement of the above technical solution, the support member is a spring sheet or a square column.

As an improvement of the above technical solution, the side of the inserting support contacting the needle butt is a plane, and the other sides are not limited to planes, such as a rectangular parallelepiped, a triangular prism, or a semi-cylinder.

A needle selection method for a latch needle warp knitting machine, the method is applied to the needle selection device of the latch needle warp knitting machine according to any one of the above technical solutions. , the insertion position of the lower insert support, so that the latch needle stops the synchronous movement with the cover plate, and stays in the corresponding position, which specifically includes:

When the cover plate rises, the lower insert support is inserted under the needle butt, and the latch needle rises synchronously with the cover plate; when the lower insert support is not inserted under the needle butt, the latch needle does not rise synchronously with the cover plate and stays at the corresponding position;

When the cover plate is lowered, the upper insert supporter is inserted above the needle butt, and the latch needle descends synchronously with the cover plate; when the upper insert supporter is not inserted above the needle butt, the latch needle does not descend synchronously with the cover plate and stays at the corresponding position ;

When the cover plate rises to the middle position, adjust the insertion position of the lower insert support, and the height of the latch needle changes accordingly.

The beneficial effects brought by the present invention are:

After the above invention is adopted, the latch needle warp knitting machine can adjust the working position height of each knitting needle according to the technological requirements during knitting, and optionally knit into loops, tucks, floating lines or some knitting needles to participate in knitting, etc., Enriched the pattern types of latch stitch warp knitted fabrics.

In addition, the invention has simple structure, convenient operation, wide adjustment range and high selectivity, which is beneficial to the development and trial production of new latch needle warp knitted fabrics.

Description of drawings

The disclosure of the present invention will become more easily understood with reference to the accompanying drawings. It is easily understood by those skilled in the art that these accompanying drawings are only used to illustrate the technical solutions of the present invention, and are not intended to limit the protection scope of the present invention, wherein:

Fig. 1 is a front view of the device of the present invention (only a part is shown);

Figure 2 is a top view of the device of the present invention (only a part is shown);

Fig. 3 is a partial enlarged view of the back of the cover plate of the device of the present invention (the side next to the needle bed);

4 is a cross-sectional view of the inserting support in the state of needle selection and needle raising in the present invention;

5 is a cross-sectional view of the inserting support in the state of the needle pressing according to the present invention;

Fig. 6 is a cross-sectional view of the needle selection and raising again during the knitting process of the insert support according to the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. The specific embodiments of the present invention described in the accompanying drawings are for illustrative purposes only, and are not strictly drawn to actual size and scale. Therefore, the drawings in the present invention should not be construed to limit the present invention in any way. The protection scope of the present invention is defined by the claims.

For the sake of brevity and emphasis on the invention, in some of the drawings only details particularly pertinent to the invention are shown. It should be understood that this manner of illustration does not exclude the presence of other details relevant to the present invention. Accordingly, the accompanying drawings of the present invention are not intended to limit the scope of the present invention.

Example 1

A needle selection device of a latch needle warp knitting machine.

1 to 6 , the device includes a needle bed 1 , a latch needle 2 , a cover plate 3 , an insertion support 4 , a support 5 , and a control mechanism 6 . Among them, the needle bed 1 is provided with a row of needle grooves 7 according to the machine size requirements, and a latch needle 2 that can move up and down is installed in the needle groove 7, and the latch needle 2 has a butt. The cover plate 3 is installed on the needle bed 1 and is provided with a slot 8, the insert support 4 is installed in the slot 8 and can move forward and backward, and the upper insert support 4-1 and the lower insert support 4-2 can be clamped The needle butt, the support member 5 is installed under the latch needle 2, and the control mechanism 6 can control the insertion support member 4 to move.

In this embodiment, the cover plate 3 is installed on the needle bed 1, and a row of grooves 9 corresponding to the needle grooves 7 are arranged on the cover plate 3. According to the requirements of the knitting process, a slot 8 is opened in the groove 9. 8 The horizontal direction is one row, and there are at least two rows.

The inserting support 4 is controlled by the control mechanism 6, and enters the slot 8 in the working state to perform needle selection, needle raising or needle pressing operations, and exits the slot 8 in the non-working state.

The above-mentioned support member 5 can be a spring sheet or a square column, and its function is to maintain the height of the latch needle 2 . The side of the insert supporter in contact with the needle butt should be a flat surface for easy clamping, and the other surfaces are not limited to flat surfaces, such as cuboid, triangular prism or semi-cylindrical.

The control mechanism 6 can be any existing mechanism that can drive the insertion support 4 to move manually, electronically, hydraulically or pneumatically, such as a driving cylinder, etc. The control mechanism 6 can be set up in one group, and controls the upper insertion support 4 at the same time. -1 and the lower insert support 4-2, or two groups, one group controls the upper insert support 4-1, and the other group controls the lower insert support 4-2.

Example 2

A needle selection method for a latch needle warp knitting machine.

The method is applied to the needle selection device of the latch needle warp knitting machine in Example 1, which is specifically:

In the process of rising or falling of the cover plate 3, by adjusting the insertion positions of the upper and lower inserting supports 4-2, the latch needle 2 stops the synchronous movement with the cover plate 3 and stays at the corresponding position, which is specifically divided into:

When the cover plate 3 rises, the lower inserting support 4-2 is inserted under the needle butt, and the latch needle 2 rises synchronously with the cover plate 3; when the lower inserting support 4-2 is not inserted under the needle butt, the latch needle 2 does not connect with the needle butt. The cover plate 3 rises synchronously and stays at the corresponding position;

When the cover plate 3 is lowered, the upper inserting support 4-1 is inserted above the needle butt, and the latch needle 2 and the cover plate 3 descend synchronously; when the upper inserting support 4-1 is not inserted above the needle butt, the latch needle 2 does not Descend synchronously with the cover plate 3 and stay at the corresponding position;

When the cover plate 3 rises to the middle position, the insertion position of the lower inserting support 4-2 is adjusted, and the height of the latch needle 2 changes accordingly.

After the above method is adopted, the latch needle warp knitting machine can adjust the working position height of each knitting needle according to the process requirements during knitting, and optionally knit into loops, tucks, floating lines or some knitting needles to participate in knitting, etc. Enriched the pattern types of latch stitch warp knitted fabrics.

The above describes different embodiments of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments. Scope of the invention. All equivalent changes and improvements made according to the scope of the application of the present invention should still belong to the scope of the patent of the present invention.

Claims (9)

1. A needle selection device of a latch needle warp knitting machine is characterized in that: the needle bed comprises a needle bed body, the needle bed body comprises a plurality of needle grooves which are arranged in rows according to the requirement of the machine number, latch needles which can move up and down are installed in the needle grooves, needle butts are arranged on the latch needles, a cover plate is installed on the needle bed body, inserting grooves corresponding to the needle grooves are formed in the cover plate, inserting and supporting pieces which can move back and forth are installed in the inserting grooves, the inserting and supporting pieces comprise upper inserting and supporting pieces and lower inserting and supporting pieces, the needle butts are clamped between the upper inserting and supporting pieces and the lower inserting and supporting pieces, and the supporting pieces are installed below the latch needles.

2. The needle selector of a latch needle warp knitting machine according to claim 1, characterized in that: the cover plate is provided with a row of grooves corresponding to the needle grooves, the slots are arranged in the grooves according to the requirements of a weaving process, and at least two rows of the slots are arranged in the horizontal direction.

3. The needle selector of a latch needle warp knitting machine according to claim 1, characterized in that: the inserting and supporting piece is connected with a control mechanism, and is controlled to be inserted into the slot in a working state, perform needle selection, needle raising or needle pressing operation and withdraw from the slot in a non-working state.

4. The needle selector of a latch needle warp knitting machine according to claim 3, characterized in that: the control mechanism is a manual, electric control, hydraulic or pneumatic mechanism and is used for controlling the movement of the inserting and supporting piece.

5. The needle selector of a latch needle warp knitting machine according to claim 4, characterized in that: the control mechanism is provided with a group and controls the upper supporting piece and the lower supporting piece to move simultaneously.

6. The needle selector of a latch needle warp knitting machine according to claim 4, characterized in that: the control mechanism is provided with two groups, one group controls the upper supporting piece to move, and the other group controls the lower supporting piece to move.

7. The needle selecting device of the latch needle warp knitting machine according to claim 1, characterized in that: the supporting piece is a spring piece or a square column.

8. The needle selecting device of the latch needle warp knitting machine according to claim 1, characterized in that: the surface of the inserting support part contacted with the needle butt is a plane.

9. A needle selection method of a latch needle warp knitting machine is characterized in that: the method applied to the needle selection device of the latch needle warp knitting machine according to any one of claims 1 to 8, which stops the latch needle from moving synchronously with the cover plate and stays at the corresponding position by adjusting the insertion positions of the upper and lower supporters during the raising or lowering of the cover plate, specifically comprising:

when the cover plate is lifted, the lower supporting piece is inserted below the needle butt, and the latch needle and the cover plate are lifted synchronously; when the lower supporting piece is not inserted below the needle butt, the latch needle does not synchronously ascend with the cover plate and stays at a corresponding position;

when the cover plate descends, the upper supporting piece is inserted above the needle butt, and the latch needle and the cover plate descend synchronously; when the upper supporting piece is not inserted above the needle butt, the latch needle does not synchronously descend with the cover plate and stays at the corresponding position;

when the cover plate is lifted to the middle position, the inserting position of the lower support part is adjusted, and the height of the latch needle is changed accordingly.

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