Bidirectional layered needle selection structure device for small circular knitting machine

Abstract

The utility model relates to a two-way layered needle selection structure device for a small circular knitting machine, which comprises a mounting seat, two groups of cylinders distributed up and down are inserted in the mounting seat, a T-shaped connecting block is fixedly connected to a piston rod of each cylinder, a vertical guide groove is formed in the middle of the mounting seat, the connecting block is inserted in the guide groove of the mounting seat, and the connecting block is fixedly connected with the mounting seat. The air cylinder is fixedly connected to the inner side wall of the mounting seat; a vertical needle selection triangle bottom plate is arranged on one side of the mounting seat, two groups of positioning clamping grooves which are distributed up and down are formed in the needle selection triangle bottom plate, positioning blocks are inserted into the positioning clamping grooves, fastening screws are inserted into the middle parts of the positioning blocks, the fastening screws are screwed and fixed on the connecting blocks, and positioning pins are inserted into the positioning blocks on the upper and lower sides of the fastening screws; and the positioning pin is inserted and fixed on the connecting block. According to the device, the positioning pin is additionally arranged between the needle selection triangle bottom plate and the connecting block to improve the connecting precision, and meanwhile, a stroke-adjustable structure is designed on the air cylinder, so that the needle selection triangle bottom plate can move accurately.

Description

Technical Field:

[0001] The utility model relates to the technical field of needle selection structures on knitting machines, and more specifically to a two-way layered needle selection structure device for a small circular knitting machine. Background Art:

[0002] A circular knitting machine mainly includes a frame, a cylinder rotatably arranged on the frame, a needle disc located above the cylinder and rotating synchronously with the cylinder, a lower triangular base arranged opposite to the cylinder on the frame, an upper triangular base arranged opposite to the needle disc on the frame, and a needle selection device. Among them, the needle selection device is provided with a two-way layered needle selection structure as shown in Figure 1 The two-way layered needle selection structure includes a mounting seat 1, a cylinder 2, an L-shaped slider 3', and a needle selection triangular base plate 4. The needle selection triangular base plate 4 is provided with threaded through holes and is fixedly connected to the slider 3' through bolts. The cylinder 2 is fixedly connected to the mounting seat 1 and is connected to the slider 3'. The slider 3' moves up and down in the mounting seat 1 to drive the up and down position change of the needle selection triangular base plate 4. Although the double cylinders 2 can control the distance between the up and down positions of the needle selection triangular base plate 4, due to the fitting clearance of the threaded through holes and the structure of the cylinder 2 without adjustable stroke, it causes the needle selection triangular base plate 4 to not reach the required position accurately. Therefore, a structure that can accurately move the needle selection triangular base plate 4 needs to be designed. Summary of the Utility Model:

[0003] The purpose of the utility model is to aim at the deficiencies of the existing technology and provide a two-way layered needle selection structure device for a small circular knitting machine. The device adds positioning pins between the needle selection triangular base plate and the connecting block to improve the connection accuracy, and at the same time designs a structure with adjustable stroke on the cylinder, so as to accurately realize the movement of the needle selection triangular base plate.

[0004] A two-way layered needle selection structure device for a small circular knitting machine includes a "U"-shaped mounting seat. Two groups of cylinders arranged up and down are inserted into the mounting seat. A T-shaped connecting block is fixedly connected to the piston rod of the cylinder. A vertical guiding groove is formed in the middle of the mounting seat. The connecting block is inserted into the guiding groove of the mounting seat. The cylinder is fixedly connected to the inner side wall of the mounting seat. A vertical needle selection triangular base plate is arranged on one side of the mounting seat. Two groups of positioning card slots arranged up and down are formed on the needle selection triangular base plate. A positioning block is inserted into the positioning card slot. A fastening screw is inserted into the middle of the positioning block. The fastening screw is screwed and fixed on the connecting block. The positioning blocks respectively press against the connecting block and the needle selection triangular base plate. Positioning pins are inserted into the positioning blocks on the upper and lower sides of the fastening screw. The positioning pins are inserted and fixed on the connecting block.

[0005] A vertical step hole is formed on one side of the upper cylinder body of the cylinder. A limit adjustment column is inserted into the lower part of the step hole. A stud is formed at the lower end of the limit adjustment column. The stud is screwed on the connecting block.

[0006] Preferably, the stepped hole on the cylinder consists of a small hole at the top and a large hole at the bottom, with the length of the small hole being less than the length of the large hole;

[0007] The limiting adjustment column is made of cylinder, and the diameter of the limiting adjustment column is equal to the diameter of the large hole on the stepped hole. A "I"-shaped limiting groove is formed on the upper end surface of the limiting adjustment column.

[0008] Preferably, the length of the limiting adjustment column is less than the length of the piston rod on the cylinder, and an inverted bottom bolt is inserted into the connecting block. The upper end of the bottom bolt extends out of the connecting block and is screwed into the piston rod of the cylinder, and the piston rod of the cylinder abuts against the connecting block.

[0009] Preferably, several threaded holes are formed on the inner sidewalls of the mounting seats on both sides of the guide groove, and ear seats are formed on both sides of the cylinder body. Fastening bolts are inserted into the ear seats and screwed into the threaded holes of the mounting seats.

[0010] Preferably, the connecting block has a bottom threaded hole formed on its side wall, which is opposite to the fastening screw. The connecting block above and below the bottom threaded hole has a first pin hole formed on its side. The positioning block has a stepped positioning hole formed in its middle. The fastening screw is inserted into the positioning hole of the positioning block. The positioning block above and below the positioning hole has a second pin hole formed on its side. The positioning pin is inserted into the first pin hole and the second pin hole, respectively.

[0011] Preferably, the guide groove on the mounting base extends through the lower end face of the mounting base, and the width of the guide groove is equal to the width of the connecting block.

[0012] The beneficial effects of this utility model are as follows:

[0013] This device improves connection accuracy by adding positioning pins to the needle selection triangle base plate and the connecting block, and also designs an adjustable stroke structure on the cylinder, so as to accurately realize the movement of the needle selection triangle base plate. Attached image description:

[0014] Figure 1 This is a schematic diagram of an existing bidirectional layered needle selection structure;

[0015] Figure 2 This is a schematic diagram of the structure of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the internal mounting base of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the inner connecting block of this utility model;

[0018] Figure 5 This is a three-dimensional structural diagram of the triangular base plate of the inner selection needle of this utility model;

[0019] Figure 6This is a three-dimensional structural schematic diagram of the internal positioning block of the utility model.

[0020] In the figure: 1. Mounting seat; 11. Guide groove; 2. Cylinder; 21. Step hole; 3. Connecting block; 31. Bottom threaded hole; 32. First pin hole; 33. Threaded through hole; 34. Connecting hole; 4. Needle selection triangular bottom plate; 41. Positioning card slot; 5. Limit adjusting column; 51. Stud; 52. Limit card slot; 6. Positioning block; 61. Positioning hole; 62. Second pin hole; 7. Positioning pin; 8. Fastening screw. Specific implementation method:

[0021] Example: As shown in Figures 2 to 6 A two-way layered needle selection structure device for a small circular knitting machine includes a "C"-shaped mounting seat 1. Two groups of cylinders 2 distributed vertically up and down are inserted into the mounting seat 1. A T-shaped connecting block 3 is fixedly connected to the piston rod of the cylinder 2. A vertical guide groove 11 is formed in the middle of the mounting seat 1. The connecting block 3 is inserted into the guide groove 11 of the mounting seat 1, and the cylinder 2 is fixedly connected to the inner side wall of the mounting seat 1. A vertical needle selection triangular bottom plate 4 is provided on one side of the mounting seat 1. Two groups of positioning card slots 41 distributed vertically up and down are formed on the needle selection triangular bottom plate 4. A positioning block 6 is inserted into the positioning card slot 41. A fastening screw 8 is inserted into the middle of the positioning block 6, and the fastening screw 8 is screwed and fixed on the connecting block 3. The structure of the needle selection triangular bottom plate 4 itself is relatively auxiliary, and it is more troublesome to open pin holes and positioning holes. Therefore, a structure of the positioning card slot 41 cooperating with the positioning block 6 is designed. The positioning card slot 41 is convenient to process. When installing different needle selection triangular bottom plates 4, the positioning block 6 can be used in combination. The positioning blocks 6 are respectively pressed against the connecting block 3 and the needle selection triangular bottom plate 4. Positioning pins 7 are inserted into the positioning blocks 6 on the upper and lower sides of the fastening screw 8, and the positioning pins 7 are inserted and fixed on the connecting block 3;

[0022] On one side of the upper cylinder body of the cylinder 2, a vertical step hole 21 is formed. A limit adjusting column 5 is inserted into the lower part of the step hole 21. A stud 51 is formed at the lower end of the limit adjusting column 5, and the stud 51 is screwed on the connecting block 3.

[0023] The step hole 21 on the cylinder 2 is composed of an upper small hole and a lower large hole. The length of the small hole is less than the length of the large hole;

[0024] The limit adjusting column 5 is a cylinder. The diameter of the limit adjusting column 5 is equal to the aperture of the large hole on the step hole 21. A "-" shaped limit card slot 22 is formed on the upper end surface of the limit adjusting column 5. A screwdriver can pass through the small hole to drive the limit adjusting column 5 to rotate to limit the height of the upper end of the limit adjusting column 5, so as to accurately adjust the stroke of the cylinder 2.

[0025] The length of the limiting adjustment column 5 is less than the length of the piston rod on the cylinder 2. An inverted bottom bolt is inserted into the connecting block 3. The upper end of the bottom bolt extends out of the connecting block 3 and is screwed into the piston rod of the cylinder 2. The piston rod of the cylinder 2 abuts against the connecting block 3. The connecting block 3 has a connecting hole 34 opposite to the bottom bolt, and a threaded through hole 33 opposite to the stud 51 is opened in the connecting block 3.

[0026] Several threaded holes are formed on the inner sidewalls of the mounting seats 1 on both sides of the guide groove 11. Ear seats are formed on both sides of the cylinder body of the cylinder 2. Fastening bolts are inserted into the ear seats and screwed into the threaded holes of the mounting seats 1.

[0027] The connecting block 3 has a bottom threaded hole 32 formed on its side wall, which is opposite to the fastening screw 8. The connecting block 3 on the upper and lower sides of the bottom threaded hole 32 has a first pin hole 31 formed. The positioning block 6 has a stepped positioning hole 61 formed in the middle. The fastening screw 8 is inserted into the positioning hole 61 of the positioning block 6. The positioning block 6 on the upper and lower sides of the positioning hole 61 has a second pin hole 62 formed. The positioning pin 7 is inserted into the first pin hole 31 and the second pin hole 62 respectively. The positioning pin 7 is used to improve the installation accuracy between the connecting block 3 and the selection pin triangular base plate 4.

[0028] The guide groove 11 on the mounting base 1 passes through the lower end face of the mounting base 1. The width of the guide groove 11 is equal to the width of the connecting block 3. Thus, the guide groove 11 can restrict the left and right movement of the connecting block 3. In addition, the cylinder 2, together with the limit adjustment column 5, can not only adjust the stroke, but also ensure that the connecting block 3 only moves up and down.

[0029] Working principle: This structure is a two-way layered needle selection structure device for a small circular knitting machine. Its technical points are reflected in two aspects. One is the connection structure between the connecting block 3 and the needle selection triangle base plate 4. During the connection process, a positioning pin 7 is added. The positioning pin 7 can eliminate the original problem of gap fit between the bolt through hole and the bolt, and can achieve precise control of the position of the needle selection triangle base plate 4 on the connecting block 3.

[0030] Another point is that a stepped hole 21 is opened on the cylinder body of cylinder 2, and the stroke of cylinder 2 is precisely adjusted by the height-adjustable limit adjustment column 5. In summary, this bidirectional layered needle selection structure is compact and highly accurate.

[0031] The embodiments described above are illustrative of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be as set forth in the claims.

Claims

1. A two-way layered needle selection structure device for a small circular knitting machine, comprising a "C"-shaped mounting base (1), and two groups of cylinders (2) arranged vertically are inserted into the mounting base (1), and it is characterized in that: A T-shaped connecting block (3) is fixedly connected to the piston rod of the air cylinder (2). A vertical guide groove (11) is formed in the middle of the mounting seat (1). The connecting block (3) is inserted into the guide groove (11) of the mounting seat (1), and the air cylinder (2) is fixedly connected to the inner side wall of the mounting seat (1). A vertical needle selection triangular base plate (4) is provided on one side of the mounting seat (1). Two groups of upper and lower distributed positioning card slots (41) are formed on the needle selection triangular base plate (4). A positioning block (6) is inserted into the positioning card slot (41). A fastening screw (8) is inserted into the middle of the positioning block (6), and the fastening screw (8) is screwed and fixed on the connecting block (3). The positioning blocks (6) are respectively pressed against the connecting block (3) and the needle selection triangular base plate (4). A positioning pin (7) is inserted into the positioning blocks (6) on the upper and lower sides of the fastening screw (8), and the positioning pin (7) is inserted and fixed on the connecting block (3). A vertical step hole (21) is formed on one side of the upper cylinder body of the air cylinder (2). A limit adjusting column (5) is inserted into the lower part of the step hole (21). A stud (51) is formed at the lower end of the limit adjusting column (5), and the stud (51) is screwed on the connecting block (3).

2. The bidirectional layered needle selection structure device for a small circular knitting machine according to claim 1, characterized in that: The step hole (21) on the air cylinder (2) consists of an upper small hole and a lower large hole. The length of the small hole is less than the length of the large hole. The limit adjusting column (5) is a cylinder. The diameter of the limit adjusting column (5) is equal to the aperture of the large hole on the step hole (21). A "-" shaped limit card slot (22) is formed on the upper end surface of the limit adjusting column (5).

3. The bidirectional layered needle selection structure device for a small circular knitting machine according to claim 2, characterized in that: The length of the limit adjusting column (5) is less than the length of the piston rod on the air cylinder (2). An inverted bottom bolt is inserted into the connecting block (3). The upper end of the bottom bolt extends out of the connecting block (3) and is screwed into the piston rod of the air cylinder (2). The piston rod of the air cylinder (2) abuts against the connecting block (3).

4. The bidirectional layered needle selection structure device for a small circular knitting machine according to claim 1, characterized in that: A number of threaded holes are formed on the inner side walls of the mounting seat (1) on both sides of the guide groove (11). Ear seats are formed on both sides of the cylinder body of the air cylinder (2). Fastening bolts are inserted into the ear seats, and the fastening bolts are screwed and fixed in the threaded holes of the mounting seat (1).

5. The bidirectional layered needle selection structure device for a small circular knitting machine according to claim 1, characterized in that: A bottom threaded hole (32) opposite to the fastening screw (8) is formed on the side wall of the connecting block (3). First pin holes (31) are formed on the connecting block (3) on the upper and lower sides of the bottom threaded hole (32). A stepped positioning hole (61) is formed in the middle of the positioning block (6). The fastening screw (8) is inserted into the positioning hole (61) of the positioning block (6). Second pin holes (62) are formed on the positioning block (6) on the upper and lower sides of the positioning hole (61). The positioning pins (7) are respectively inserted into the first pin hole (31) and the second pin hole (62).

6. The bidirectional layered needle selection structure device for a small circular knitting machine according to claim 1, characterized in that: The guide groove (11) on the mounting seat (1) penetrates through the lower end surface of the mounting seat (1). The groove width of the guide groove (11) is equal to the width of the connecting block (3).

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