A cam structure of a cam and drum machine

Abstract

The application relates to the technical field of circular knitting machines, in particular to a cam and cam structure of a circular knitting machine, which comprises a cam body, a needle inlet slot, a needle running slot and a needle outlet slot are sequentially arranged on the cam body, the needle running slot is communicated with the needle inlet slot and the needle outlet slot, and the width of the needle running slot is between 3.1 cm and 3.3 cm. The application has the effect of improving the loop density of knitting.

Description

Technical Field

[0001] This application relates to the technical field of large circular knitting machines, and in particular to a triangle and a triangle structure for large circular knitting machines. Background Technology

[0002] Circular knitting machines, also known as circular weft knitting machines, have seen rapid development due to their numerous loop-forming systems (commonly referred to as yarn feed paths or loop formation paths, or simply paths), high speeds, high output, rapid pattern changes, good fabric quality, fewer processing steps, and strong product adaptability. A circular knitting machine consists of a frame, knitting mechanism, yarn feeding mechanism, transmission mechanism, lubrication and dust removal mechanism, electrical control mechanism, drafting and take-up mechanism, and other auxiliary devices. The knitting mechanism is the heart of the machine, mainly composed of a cylinder, needles, cams and cam seats (saddles), and sinkers (only found on single-jersey machines). Cams, also called "mountain corners" or "diamond corners," control the reciprocating motion of the needles and sinkers within the cylinder groove according to the different knitting patterns required by the circular knitting machine. There are five types of cams: loop-forming cams, tucking cams, floating cams, anti-crossing cams, and insert cams.

[0003] Currently, a type of knitting needle includes a triangular body. Along the direction of needle movement, the triangular body has a needle inlet groove, a needle travel groove, and a needle outlet groove sequentially formed. The needle grooves include a rising groove, a falling groove, a yarn hooking groove, and a loop forming groove sequentially formed on the triangular body. The needle inlet groove communicates with the rising groove, forming a first arc at the connection point; the rising groove and the falling groove form a second arc at their connection point; and the loop forming groove communicates with the needle outlet groove, forming a third arc at their connection point. The width of the rising groove, falling groove, yarn hooking groove, and loop forming groove is 6.5 cm, meaning the width of the needle travel groove is 6.5 cm. The knitting needle enters the rising groove from the needle inlet groove, then passes through the falling groove, then enters the yarn hooking groove, then enters the loop forming groove, and finally exits the triangular body from the needle outlet groove.

[0004] In the process of developing this application, the inventors discovered that the technology has at least the following problems: because the width of the needle groove is relatively large, when the needle moves in the needle groove, the needle will increase its stroke due to the inertia of its up and down movement, which will lead to a decrease in the density of the knitted loops. Summary of the Invention

[0005] To increase the density of the woven loops, this application provides a triangular and large circular knitting machine triangular structure.

[0006] Firstly, the triangle provided in this application adopts the following technical solution:

[0007] A triangle includes a triangle body, on which a needle inlet groove, a needle outlet groove, and a needle exit groove are sequentially formed. The needle outlet groove connects the needle inlet groove and the needle exit groove, and the width of the needle outlet groove is between 3.1 cm and 3.3 cm.

[0008] By adopting the above technical solution, the knitting needle enters the needle feed groove from the needle feed groove, then moves from the needle feed groove to the needle exit groove, and finally moves out of the triangular body from the needle exit groove. When the knitting needle moves in the needle feed groove, it will knit the yarn into loops. When the knitting needle moves in the needle feed groove with a width between 3.1 cm and 3.3 cm, the increased stroke of the knitting needle due to the inertia of the up and down movement can be reduced, thereby increasing the density of the knitted loops.

[0009] Optionally, the needle groove includes an ascending groove, a descending groove, a yarn hooking groove, and a loop forming groove sequentially formed on the triangular body. The end of the ascending groove away from the descending groove is connected to the needle inlet groove, and a first arc is formed at the connection between the needle inlet groove and the ascending groove. A second arc is formed at the connection between the ascending groove and the descending groove. The cross-section of the yarn hooking groove is arc-shaped. The end of the loop forming groove away from the yarn hooking groove is connected to the needle outlet groove, and a third arc is formed at the connection between the loop forming groove and the needle outlet groove.

[0010] By adopting the above technical solution, the knitting needle enters the rising groove from the needle inlet groove, then passes through the descending groove, then enters the yarn hooking groove, then enters the loop forming groove, and finally moves out of the triangular body from the needle outlet groove; the first arc, the second arc and the third arc formed can make the knitting needle transition smoothly during the movement of the knitting needle and reduce the phenomenon of knitting needle damage.

[0011] Optionally, the included angle between the descending groove and the ascending groove is between 59 degrees and 61 degrees.

[0012] By adopting the above technical solution, the included angle between the rising groove and the falling groove can ensure a smooth transition for the knitting needle, protecting the knitting needle and facilitating subsequent knitting needles to better weave the yarn into loops.

[0013] Optionally, the triangular body is provided with two guide blocks, and the two guide blocks form a guide hole communicating with the needle groove.

[0014] By adopting the above technical solution, the guide hole formed by the two guide blocks can better enable the knitting needle to move from the needle exit groove of the triangle to the needle entry groove of the adjacent triangle.

[0015] Optionally, the triangular body includes a first half, a second half, a connecting body, and a first connecting bolt. The first half is connected to the connecting body by the first connecting bolt, and the second half is also connected to the connecting body by the first connecting bolt. The first half and the second half form the needle inlet groove, the needle outlet groove, and the needle feed groove on the connecting body.

[0016] By adopting the above technical solution, when the first half or the second half is damaged, the needle groove formed by the first half and the second half on the connecting body will deform, causing the movement path of the knitting needle to change, resulting in problems with the woven loops. Therefore, when the first half or the second half is damaged, the first connecting bolt is rotated to separate the first connecting bolt from the connecting body, and then the damaged first half or the second half is replaced, thereby ensuring the quality of the woven loops. Moreover, replacing only the damaged part can also save resources.

[0017] Optionally, the connecting body includes a third half, a fourth half, and a second connecting bolt. The third half has a first threaded hole, and the fourth half has a second threaded hole. The second connecting bolt passes through the second threaded hole on the fourth half and is threadedly connected to the first threaded hole on the third half. The second threaded hole is also threadedly connected to the second connecting bolt. The first half is connected to the third half by the first connecting bolt, and the second half is connected to the fourth half by the first connecting bolt.

[0018] By adopting the above technical solution, the first half is first connected to the third half by the first connecting bolt, and the second half is connected to the fourth half by the first connecting bolt. When the width of the needle groove formed by the first half on the third half and the second half on the fourth half is not between 3.1 cm and 3.3 cm, the distance between the third half and the fourth half can be adjusted as needed to make the width of the needle groove between 3.1 cm and 3.3 cm. After the position of the third half relative to the fourth half is determined, the second connecting bolt passes through the second threaded hole on the fourth half and is threadedly connected to the first threaded hole on the third half. The second threaded hole on the fourth half is also threadedly connected to the second connecting bolt, thus realizing the connection between the third half and the fourth half. Therefore, setting an adjustable connector can also ensure the normal use of the triangular jack.

[0019] Secondly, the large circular knitting machine triangular structure provided in this application adopts the following technical solution:

[0020] A triangular structure for a large circular knitting machine includes a saddle body, multiple sets of connecting components, and an adjusting component. Each connecting component includes two adjusting blocks and a third connecting bolt. Both adjusting blocks are slidably mounted on the saddle body. A third half is connected to one of the adjusting blocks via the third connecting bolt, and a fourth half is connected to the other adjusting block via the third connecting bolt. The adjusting component is mounted on the saddle body, and all adjusting blocks in the multiple sets of connecting components are connected to the adjusting component.

[0021] By adopting the above technical solution, the third and fourth halves, which are connected together by the second connecting bolt, are first connected to two adjusting blocks by the third connecting bolt. When it is necessary to adjust the distance between the third and fourth halves, that is, to adjust the width of the needle groove, the second connecting bolt is first separated from the second threaded hole on the fourth half. Then, the position of the two adjusting blocks in the connecting assembly is adjusted by the adjusting component. The two adjusting blocks will change the position of the third and fourth halves. After the position of the third and fourth halves is determined, the second connecting bolt is then threadedly connected to the second threaded hole on the fourth half. Moreover, when it is necessary to install the saddle on the circular knitting machine, the distance between the third and fourth halves can be increased first, so that neither the first nor the second half is in contact with the needle. Then, the position of the third and fourth halves is adjusted by the adjusting component, so that the width of the needle groove formed between the first and the second halves is reduced, thereby allowing the needle to be better positioned in the needle groove, quickly making the needle engage with the needle groove located on the upper triangle of the saddle body, reducing adjustment time and improving efficiency.

[0022] Optionally, the adjustment assembly includes an adjustment shaft and a bidirectional screw. The adjustment shaft is rotatably mounted on the saddle body. Multiple bidirectional screws are provided, and each bidirectional screw corresponds to a connecting assembly. The bidirectional screw passes through two adjustment blocks, and two adjustment blocks in the same set of connecting assemblies are threadedly connected to both ends of the bidirectional screw.

[0023] By adopting the above technical solution, rotating the adjustment shaft drives the bidirectional screw to rotate, which in turn drives the two adjustment blocks to move in opposite directions or away from each other; the adjustment component has a simple structure and is easy to operate.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. The movement of the knitting needle within the needle groove with a width between 3.1 cm and 3.3 cm can reduce the increased stroke of the knitting needle due to the inertia of its up-and-down movement, thereby increasing the density of the knitted loops;

[0026] 2. The triangular structure allows the knitting needles to quickly engage with the needle grooves located on the upper triangle of the saddle body, reducing adjustment time and improving efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the triangle structure in an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the connector structure in an embodiment of this application;

[0029] Figure 3 This is a schematic diagram of the triangular structure of the large circular knitting machine in the embodiments of this application;

[0030] Figure 4 This is a schematic diagram of the structure of the adjustment component in the embodiments of this application.

[0031] Reference numerals: 1. Triangular body; 11. Needle inlet groove; 12. Needle feed groove; 121. Rising groove; 122. Falling groove; 123. Yarn hooking groove; 124. Loop forming groove; 13. Needle exit groove; 2. Guide block; 21. Guide hole; 3. First half; 4. Second half; 5. Connecting body; 51. Third half; 52. Fourth half; 53. Second connecting bolt; 6. First connecting bolt; 71. Saddle body; 72. Connecting assembly; 721. Adjusting block; 722. Third connecting bolt; 73. Adjusting assembly; 731. Adjusting shaft; 732. Bidirectional screw. Implementation

[0032] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0033] This application discloses a triangular and large circular triangular structure.

[0034] refer to Figure 1 A triangle includes a triangle body 1, the triangle body 1 includes a connector 5, a first half 3 is provided on one end of the connector 5, and a second half 4 is provided on the other end of the connector 5.

[0035] refer to Figure 2 The connecting body 5 includes a third half 51, on which a first threaded hole is provided; a fourth half 52 is provided on one side of the third half 51, on which a second threaded hole is provided; a second connecting bolt 53 is provided on the fourth half 52, passing through the second threaded hole on the fourth half 52 and threadedly connected to the first threaded hole on the third half 51, and the second connecting bolt 53 is also threadedly connected to the second threaded hole on the fourth half 52.

[0036] The first half 3 abuts against the third half 51, and the first half 3 is provided with a first connecting bolt 6 that passes through the first half 3 and is threadedly connected to the third half 51; the second half 4 abuts against the fourth half 52, and the second half 4 is provided with a first connecting bolt 6 that passes through the second half 4 and is threadedly connected to the fourth half 52.

[0037] refer to Figure 1Between the first half 3 connected to the third half 51 and the second half 4 connected to the fourth half 52, a needle inlet groove 11, a needle feed groove 12, and a needle outlet groove 13 are formed sequentially along the needle movement direction. The needle feed groove 12 is, in sequence, an ascending groove 121, a descending groove 122, a yarn hooking groove 123, and a loop forming groove 124 along the needle movement direction. One end of the rising groove 121 is connected to the needle inlet groove 11, and a first arc is formed at the connection between the needle inlet groove 11 and the rising groove 121; the end of the rising groove 121 away from the needle inlet groove 11 is connected to the descending groove 122, and a second arc is formed at the connection between the rising groove 121 and the descending groove 122, and the included angle between the rising groove 121 and the descending groove 122 is between 59 degrees and 61 degrees, preferably 60 degrees in this embodiment; the end of the descending groove 122 away from the rising groove 121 is connected to the yarn hooking groove 123, and the cross-section of the yarn hooking groove 123 is arc-shaped; the end of the yarn hooking groove 123 away from the descending groove 122 is connected to the loop forming groove 124; the end of the loop forming groove 124 away from the yarn hooking groove 123 is connected to the needle outlet groove 13, and a third arc is formed at the connection between the loop forming groove 124 and the needle outlet groove 13.

[0038] The width of the needle groove 12 is between 3.1 cm and 3.3 cm. In this embodiment, it is preferably 3.25 cm, that is, the width of the rising groove 121, the falling groove 122, the yarn hooking groove 123 and the loop forming groove 124 are all 3.25 cm.

[0039] refer to Figure 2 A guide block 2 is fixedly connected to one end of the first half 3 near the needle outlet groove 13 and the other end of the second half 4 near the needle outlet groove 13. The guide block 2 on the first half 3 and the guide block 2 on the second half 4 form a guide hole 21, and the guide hole 21 is connected to the needle outlet groove 13.

[0040] The knitting needle enters the rising groove 121 from the needle inlet groove 11, then passes through the falling groove 122, then enters the hooking groove 123, then enters the loop forming groove 124, then moves from the needle outlet groove 13 to the guide hole 21, and finally moves out of the triangular body 1 from the guide hole 21.

[0041] The implementation principle of a triangle in this application embodiment is as follows: the first half 3 is connected to the third half 51 by the first connecting bolt 6, and the second half 4 is connected to the fourth half 52 by the first connecting bolt 6.

[0042] Then adjust the positions of the third half 51 and the fourth half 52 so that the width of the needle groove 12 formed by the first half 3 and the second half 4 is 3.25 cm. Finally, make the second connecting bolt 53 pass through the second threaded hole on the fourth half 52 and threadedly connect it to the first threaded hole on the third half 51, and also threadedly connect the second bolt to the second threaded hole on the fourth half 52.

[0043] This application also discloses a triangular structure for a large circular knitting machine.

[0044] refer to Figure 3 and Figure 4 A triangular structure for a large circular knitting machine includes a saddle body 71 with a sliding groove. Four sets of connecting components 72 are provided on the saddle body 71, each set of connecting components 72 connecting a triangular body 1. Each set of connecting components 72 includes two adjusting blocks 721 slidably connected within the sliding groove. A third half 51 of the triangular body 1 abuts against one of the adjusting blocks 721, and a third connecting bolt 722 is provided on the third half 51 and threadedly connected to the adjusting block 721. A fourth half 52 of the triangular body 1 abuts against another adjusting block 721, and a third connecting bolt 722 is also provided on the fourth half 52 and threadedly connected to the adjusting block 721.

[0045] refer to Figure 3 and Figure 4 The saddle body 71 is provided with an adjustment assembly 73, which includes an adjustment shaft 731 that rotates in a slide groove. The adjustment shaft 731 is provided with four bidirectional screws 732, and the four bidirectional screws 732 correspond one-to-one with four sets of connecting assemblies 72. Furthermore, the two adjustment blocks 721 in each set of connecting assemblies 72 are threadedly connected to the two ends of the bidirectional screws 732 respectively.

[0046] The implementation principle of the triangular structure of the large circular knitting machine in this application embodiment is as follows: First, the third half 51 and the fourth half 52, which are connected together by the second connecting bolt 53, are respectively connected to the two adjusting blocks 721 of the same set of connecting components 72 by the third connecting bolt 722. When it is necessary to adjust the distance between the third half 51 and the fourth half 52, that is, to adjust the width of the needle groove 12, the second connecting bolt 53 is first separated from the first threaded hole on the third half 51, and then the adjusting shaft 731 is rotated. The adjusting shaft 731 drives the bidirectional screw 732 to rotate, and the bidirectional screw 732 will drive the two adjusting blocks 721 to move towards or away from each other. The distance between the third half 51 and the fourth half 52 on the two adjusting blocks 721 will change. After the position of the third half 51 and the fourth half 52 is fixed, the second connecting bolt 53 is then threadedly connected to the first threaded hole on the third half 51.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A triangular structure for a large circular knitting machine, characterized in that, It includes a triangular body (1), a saddle body (71), multiple sets of connecting components (72) and adjustment components (73). The triangular body (1) is provided with a needle inlet groove (11), a needle outlet groove (12) and a needle outlet groove (13) in sequence. The needle outlet groove (12) connects the needle inlet groove (11) and the needle outlet groove (13). The width of the needle outlet groove (12) is between 3.1 cm and 3.3 cm. The triangular body (1) includes a first half (3), a second half (4), a connecting body (5), and a first connecting bolt (6). The first half (3) is connected to the connecting body (5) by the first connecting bolt (6), and the second half (4) is also connected to the connecting body (5) by the first connecting bolt (6). The first half (3) and the second half (4) form the needle inlet groove (11), the needle outlet groove (12), and the needle outlet groove (13) on the connecting body (5). The connector (5) includes a third half (51), a fourth half (52), and a second connecting bolt (53). The third half (51) has a first threaded hole, and the fourth half (52) has a second threaded hole. The second connecting bolt (53) passes through the second threaded hole on the fourth half (52) and is threadedly connected to the first threaded hole on the third half (51). The second threaded hole is also threadedly connected to the second connecting bolt (53). The first half (3) is connected to the third half (51) by the first connecting bolt (6), and the second half (4) is connected to the fourth half (52) by the first connecting bolt (6). The connecting assembly (72) includes two adjusting blocks (721) and a third connecting bolt (722). Both adjusting blocks (721) are slidably disposed on the saddle body (71). The third half (51) is connected to one of the adjusting blocks (721) by the third connecting bolt (722), and the fourth half (52) is connected to the other adjusting block (721) by the third connecting bolt (722). The adjusting assembly (73) is disposed on the saddle body (71), and the adjusting blocks (721) in the multiple sets of connecting assemblies (72) are all connected to the adjusting assembly (73). The adjustment assembly (73) includes an adjustment shaft (731) and a bidirectional screw (732). The adjustment shaft (731) is rotatably mounted on the saddle body (71). Multiple bidirectional screws (732) are provided. Each bidirectional screw (732) corresponds to one of the connecting assemblies (72). The bidirectional screw (732) passes through two adjustment blocks (721), and two adjustment blocks (721) in the same set of connecting assemblies (72) are threadedly connected to both ends of the bidirectional screw (732).

2. The triangular structure of a large circular knitting machine according to claim 1, characterized in that, The needle groove (12) includes an ascending groove (121), a descending groove (122), a hooking groove (123), and a looping groove (124) sequentially opened on the triangular body (1). The end of the ascending groove (121) away from the descending groove (122) is connected to the needle inlet groove (11), and a first arc is formed at the connection between the needle inlet groove (11) and the ascending groove (121). A second arc is formed at the connection between the ascending groove (121) and the descending groove (122). The cross section of the hooking groove (123) is arc-shaped. The end of the looping groove (124) away from the hooking groove (123) is connected to the needle outlet groove (13), and a third arc is formed at the connection between the looping groove (124) and the needle outlet groove (13).

3. The triangular structure of a large circular knitting machine according to claim 2, characterized in that, The angle between the descending groove (122) and the ascending groove (121) is between 59 degrees and 61 degrees.

4. The triangular structure of a large circular knitting machine according to claim 1, characterized in that, Two guide blocks (2) are provided on the triangular body (1), and the two guide blocks (2) form a guide hole (21) that communicates with the needle groove (13).

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