TWM656213U - An improved sinker for a weaving machine - Google Patents

Abstract

The present invention discloses an improved sinker for a weaving machine, which includes: a head and a tail extending backward from the head and lower than the head, a looping part cooperating with a weaving needle of a weaving machine is formed at the upper end of the head, and a first hooking groove is formed between the looping part and the top of the head, and the front end of the looping part is formed with a second hooking groove and a third hooking groove in sequence from bottom to top; the first hooking groove, the second hooking groove, and the third hooking groove have the same opening direction, and the opening direction of all the hooking grooves is the front, and the third hooking groove is located behind the second hooking groove. The present invention positions the terry yarn through the second hooking groove, so that the terry yarn forms a loop, and the loop formed by the terry yarn is longer, and the length of the loop is uniform. In addition, the length of the loop can be controlled by changing the depth of the second hooking groove.

Description

An improved sinker for a weaving machine

This new product relates to the technical field of circular knitting weaving machines, and specifically refers to an improved sinker for weaving machines that can weave long terry loops.

A circular knitting machine generally comprises: a centrally located circular cylinder, the outer wall of which is provided with a needle groove for accommodating the knitting needles. A horizontal support platform is formed on the upper end surface of the cylinder, and a sinker slot for mounting a sinker (also called a looping plate or a knitting plate) is provided on the support platform. An upper inner plate is provided on the upper end of the sinker, and an upper knitting cam is provided between the upper inner plate and the sinker. The upper knitting cam is generally triangular in shape, and has a curved end surface, and a protrusion corresponding to the end surface is formed on the sinker. When the circular knitting machine is working, the needle cylinder will rotate relative to the upper inner plate. During the rotation process, the needle cylinder will drive the knitting needles in the needle groove and the sinker to rotate. Since the protrusions on the sinker are linked to the corresponding end faces, when the needle cylinder rotates, the upper knitting triangle will limit the running track of the protrusions on the sinker, causing the protrusions to move forward and backward along the end faces of the upper knitting triangle, thereby causing the sinker to run forward and backward. At the same time, the knitting needles will move up and down under the push of the lower knitting triangle, so that the sinker and the knitting needles interact with each other to form a knitting effect.

See the Chinese patent No. 201320447935.5, which is a "sinker for circular knitting machines" created by the present creator. The sinker is provided with a shearing groove at the looping mouth, through which the loops can be cut.

Different sinkers are required to weave different fabrics. The best-selling sweatshirts on the market are woven with three threads, including plain yarn, tied yarn and terry yarn. The three yarns are interwoven to form the final fabric. In order to make the fabric denser and thicker, sweatshirt manufacturers need the fabric to form longer terry loops, and traditional sinkers can no longer meet this demand.

As shown in Figure 1, this is a common three-thread weaving sinker, which includes: a head 41 and a tail 42. The upper end of the head 41 is formed with a looping portion 43, and the looping portion 43 is formed with a plain thread groove 44 and a terry thread groove 45 in sequence. During the weaving operation, the terry yarn and the binding yarn are hooked through the terry groove 45 and woven together with the plain yarn. This results in a shorter terry loop. If the length of the terry loop is to be increased, the terry yarn and the binding yarn need to be stretched at the same time, which will cause the final woven fabric to be loose and not dense.

In response to this, the author has continuously improved and combined with years of research and development experience to propose the following technical solutions.

The technical problem to be solved by this new technology is to overcome the shortcomings of the existing technology and provide an improved sinker for a weaving machine that can weave long pile loops.

In order to solve the above technical problems, the present invention adopts the following technical solutions: an improved sinker for a weaving machine, comprising: a head and a tail extending backward from the head and lower than the head, a looping part cooperating with the weaving needle of the weaving machine is formed at the upper end of the head, and a first hooking groove is formed between the looping part and the top of the head, and the front end of the looping part is formed with a second hooking groove and a third hooking groove in sequence from bottom to top; the first hooking groove, the second hooking groove, and the third hooking groove have the same opening direction, and the opening direction of all the hooking grooves is the front, and the third hooking groove is located behind the second hooking groove.

Furthermore, in the above technical solution, the front end of the loop forming part is sequentially formed with a first blade nose, a second blade nose and a third blade nose from bottom to top, the first blade nose and the top of the head form the first hooking groove; the second blade nose and the top of the first blade nose form the second hooking groove; the third blade nose and the top of the second blade nose form the third hooking groove.

Furthermore, in the above technical solution, the first leaf nose, the second leaf nose and the third leaf nose are arranged in a ladder-like manner from front to back.

Furthermore, in the above technical solution, the front end of the first blade nose is a smooth surface, and its lower end surface is inclined downward from front to back to form a guiding slope.

Furthermore, in the above technical solution, the front end surface of the second blade nose is a smooth surface; the front end surface of the third blade nose is a smooth surface.

Furthermore, in the above technical solution, the first hooking groove, the second hooking groove and the third hooking groove are arranged in parallel; or the top of the head constituting the first hooking groove, the top of the first leaf nose constituting the second hooking groove, and the top of the second leaf nose constituting the third hooking groove are arranged in parallel.

Furthermore, in the above technical solution, the depth of the first hooking groove is greater than the depth of the second hooking groove and the third hooking groove.

Furthermore, in the above technical solution, the front end of the head is formed with a pointed snout, and there is a smooth transition between the pointed snout and the top of the head.

Furthermore, in the above technical solution, a protrusion is formed upward at the end of the tail, and a driving groove is formed between the protrusion and the head.

Furthermore, in the above technical solution, the front end of the tail portion extends forward to form a positioning portion.

After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art: First, the present invention positions the terry yarn through the second hooking groove, so that the terry yarn forms a loop, instead of adopting the prior art that the terry yarn and the binding yarn are linked together through the same hooking groove. After adopting this technical solution, the present invention can not only make the woven fabric more dense, but also make the loops formed by the terry yarn longer, and at the same time, the length of the loops is uniform. Avoid the undesirable phenomenon in the prior art that if long loops are formed in the fabric, the whole fabric will become loose.

Secondly, the new type can control the length of the terry loop by changing the depth of the second hook groove while keeping the front and rear running distance of the sinker fixed, so that the user can adjust it according to needs.

1:Head

11: Pointed snout

2: Tail

21: Bump

22: Positioning unit

3: Looping Department

31: First hook line groove

32: Second hook line groove

33: The third hook line slot

34: First leaf nose

341: Guiding slope

35: Second leaf nose

36: Third lobe nose

41: Head

42: Tail

43: Looping Department

44: Flat wire groove

45: Terry thread groove

5: Knitting machine needles

6: Knitting needles

7: Support platform

8: On the inner plate

9: Yarn piece

91: Plain yarn

92:Binding yarn

93: Terry yarn

10: Shengke Piece

20: Drive slot

[Figure 1] is a schematic diagram of the structure of an existing common sinker.

[Figure 2] is a schematic diagram of the structure of the new type of Zhongshengke tablet.

〔Figure 3〕is a partial enlarged view of Figure 2.

[Figure 4] is a schematic diagram of the new type being applied to a weaving machine.

[Figure 5] is a three-dimensional diagram of the new working state.

〔Figure 6A-6D〕is a schematic diagram of the working principle of this new model.

The present invention is further described below with reference to specific embodiments and drawings.

This new model is an improved sinker for a weaving machine, as shown in Figures 2 and 3. The sinker 10 is formed in one piece with a metal sheet, and includes: a head 1, a tail 2 and a loop forming part 3.

The front end of the head 1 is formed with a pointed nose 11, and there is a smooth transition between the pointed nose 11 and the top of the head, which facilitates the movement of the yarn.

The end of the head 1 bends downward and extends backward to form a tail 2 that is lower than the head 1. A protrusion 21 is formed upward at the end of the tail 2, and a driving groove 20 is formed between the protrusion 21 and the head 1. The front end of the tail 2 extends forward to form a positioning part 22, which facilitates the entire sinker to reciprocate back and forth in the guide groove.

The loop forming part 3 that cooperates with the knitting needle is formed at the upper end of the head 1. The front end of the loop forming part 3 is formed with a first leaf nose 34, a second leaf nose 35 and a third leaf nose 36 from bottom to top. The first hooking groove 31 is formed between the first leaf nose 34 and the top of the head 1; the second hooking groove 32 is formed between the second leaf nose 35 and the top of the first leaf nose 34; the third hooking groove 33 is formed between the third leaf nose 36 and the top of the second leaf nose 35. The first hooking groove 31, the second hooking groove 32, and the third hooking groove 33 have the same opening direction. For the convenience of explanation, this embodiment always takes the opening direction of all the hooking grooves as the front, that is, the left side in Figure 2 is the front and the right side is the back. According to this front and back orientation, the loop forming part 3 has the following characteristics:

1. The first blade nose 34, the second blade nose 35 and the third blade nose 36 are arranged in a ladder-like manner from front to back.

2. The third hooking groove 33 is located behind the second hooking groove 32.

3. The depth of the first hooking groove 31 is greater than the depth of the second hooking groove 32 and the third hooking groove 33, and the rearward position of the second hooking groove 32 does not exceed the rearward position of the third hooking groove 33.

In order to avoid the yarn from being hooked or entangled, the front end of the first blade nose 34 is a smooth surface, and the lower end surface thereof is inclined downward from front to back to form a guiding slope 341. The front end surface of the second blade nose 35 is a smooth surface. The front end surface of the third blade nose 36 is a smooth surface.

In addition, the first hooking groove 31, the second hooking groove 32 and the third hooking groove 33 are arranged in parallel. Or the top of the head 1 constituting the first hooking groove 31, the top of the first leaf nose 34 constituting the second hooking groove 32, and the top of the second leaf nose 35 constituting the third hooking groove 33 are arranged in parallel.

As shown in Figure 4, this is a schematic diagram of the new circular knitting weaving machine, which includes: a circular needle cylinder 5 located in the center (only one side of the cross-sectional view is shown in the figure), and the outer wall of the needle cylinder 5 is provided with a needle groove 51 for accommodating the knitting needle 6. The upper end surface of the needle cylinder 5 is formed with a horizontal support platform 7, and a sinker slot for installing the new sinker 10 is opened on the support platform 7. An upper inner plate 8 is provided at the upper end of the sinker 10, and an upper weaving triangle is provided between the upper inner plate 8 and the sinker. A yarn sheet 9 for guiding the yarn and passing it out is provided above the sinker.

When the circular knitting machine is working, the needle cylinder 5 will rotate relative to the upper inner plate 8. During the rotation process, the needle cylinder 5 will drive the knitting needles 6 in the needle groove 51 and the sinker 10 to rotate. Since the sinker 10 is linked to the upper knitting cam, when the needle cylinder 5 rotates, the upper knitting cam will limit the running track of the sinker 10, so that the sinker 10 forms a forward and backward movement (i.e., a reciprocating movement in the left and right directions in Figure 4). At the same time, the knitting needles 6 will move up and down under the push of the lower knitting cam (not shown in the figure), so that the sinker and the knitting needles interact with each other to form a knitting effect.

As shown in FIG. 5 , the weaving machine used in the present invention adopts three-thread weaving, that is, three yarn sheets 9 are respectively led out: plain yarn 91, tied yarn 92 and terry yarn 93, and the three yarns are interwoven to form the final fabric.

When the weaving machine is working, the up and down movement of the weaving needle 6 is combined with the left and right movement of the sinker, and the two interact with each other. Through the interaction between the first hooking groove 31 and the weaving needle 6, the weaving of the plain yarn 91 is completed. This is similar to the existing technology and will not be elaborated here.

The following is an explanation of the working principle of the new loop forming method in conjunction with Figures 6A to 6D.

First, as shown in FIG6A , the knitting needle 6 runs from top to bottom and the sinker 10 runs from left to right, and the hook of the knitting needle hooks the terry yarn 93; secondly, as shown in FIG6B , the knitting needle 6 runs from bottom to top and the sinker 10 runs from back to front (i.e., from right to left in FIG6A ), and the terry yarn 93 slides off the hook of the knitting needle and falls into the second hooking groove 32, and the terry yarn 93 is positioned by the second hooking groove 32 and no longer slides up and down. As the sinker 10 continues to run from back to front, the terry yarn 93 will be pulled by the knitting needle 6 due to the obstruction of the knitting needle 6. At this time, the terry yarn 93 is finally formed into a terry loop by pulling. When the distance between the sinker 10 and the front and back movements is kept fixed, the length of the loop can be controlled by changing the depth of the second hooking groove 32.

Then, as shown in FIG. 6C , the knitting needle 6 runs from top to bottom again, and the sinker 10 runs from front to back, hooking the binding yarn 92 passing through the third hooking groove 33, participating in the weaving process, and binding the previously formed terry loops through the binding yarn 92.

Finally, as shown in FIG. 6D , the plain yarn 91 participates in the weaving, and finally the plain yarn 91, the tied-terry yarn 92 and the looped terry yarn 93 are interwoven to form the final fabric.

The present invention positions the terry yarn 93 through the second hooking groove 32, so that the terry yarn 93 forms a loop, instead of adopting the prior art of linking the terry yarn 93 and the tie yarn 92 through the same hooking groove. After adopting this technical solution, the present invention can not only make the woven fabric more dense, but also make the loops formed by the terry yarn 93 longer, and at the same time ensure that the length of the loops is uniform.

The above is a detailed description of the structure, features and effects of the present invention based on the embodiments shown in the drawings; however, the above is only a preferred embodiment of the present invention, and the scope of implementation of the present invention is not limited by the drawings. Therefore, any modification changes that are consistent with the purpose of the present invention should be included in the scope of the patent of the present invention as long as they are within the scope of equal effects.

1:Head

11: Pointed snout

2: Tail

21: Bump

22: Positioning unit

3: Looping Department

10: Shengke Piece

20: Drive slot

Claims (10)

An improved sinker for a weaving machine comprises: a head (1) and a tail (2) extending backward from the head (1) and lower than the head (1); a looping portion (3) cooperating with a weaving needle (5) of the weaving machine is formed at the upper end of the head (1), and a first thread hooking groove (31) is formed between the looping portion (3) and the top of the head (1); the improved sinker comprises: a second thread hooking groove (32) and a third thread hooking groove (33) are formed in sequence from bottom to top at the front end of the looping portion (3); the first thread hooking groove (31), the second thread hooking groove (32), and the third thread hooking groove (33) have the same opening direction, and the opening direction of all the thread hooking grooves is the front, and the third thread hooking groove (33) is located behind the second thread hooking groove (32). An improved sinker for a weaving machine as described in claim 1, wherein the front end of the loop forming portion (3) is formed with a first blade nose (34), a second blade nose (35) and a third blade nose (36) in sequence from bottom to top, the first blade nose (34) and the top of the head (1) form the first thread hooking groove (31); the second blade nose (35) and the top of the first blade nose (34) form the second thread hooking groove (32); the third blade nose (36) and the top of the second blade nose (35) form the third thread hooking groove (33). An improved sinker for a weaving machine as described in claim 2, wherein the first leaf nose (34), the second leaf nose (35) and the third leaf nose (36) are arranged in a ladder-like manner from front to back. An improved sinker for a weaving machine as described in claim 2, wherein the front end of the first blade nose (34) is a smooth surface, and the lower end surface thereof is inclined downward from front to rear to form a guiding slope (341). An improved sinker for a weaving machine as described in claim 2, wherein the front end surface of the second blade nose (35) is a smooth surface; the front end surface of the third blade nose (36) is a smooth surface. An improved sinker for a weaving machine as described in any one of claims 2 to 5, wherein the first hooking groove (31), the second hooking groove (32) and the third hooking groove (33) are arranged in parallel; or the top of the head (1) constituting the first hooking groove (31), the top of the first blade nose (34) constituting the second hooking groove (32), and the top of the second blade nose (35) constituting the third hooking groove (33) are arranged in parallel. An improved sinker for a weaving machine as described in any one of claims 1 to 5, wherein the depth of the first hooking groove (31) is greater than the depth of the second hooking groove (32) and the third hooking groove (33). An improved sinker for a weaving machine as described in claim 7, wherein a pointed snout (11) is formed at the front end of the head (1), and a smooth transition is formed between the pointed snout (11) and the top of the head. An improved sinker for a weaving machine as described in claim 7, wherein a protrusion (21) is formed upward at the end of the tail portion (2), and a driving groove (20) is formed between the protrusion (21) and the head portion (1). An improved sinker for a weaving machine as described in claim 7, wherein the front end of the tail portion (2) extends forward to form a positioning portion (22).

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