Yarn tensioning structure for pneumatic edge finishing machine

Abstract

The utility model discloses a yarn tensioning structure for a pneumatic edge trimming machine, which comprises a mounting plate, and a tensioning component is fixedly connected to the back of the mounting plate; the tensioning assembly comprises an air cylinder. The output end of the air cylinder is fixedly connected with a connecting rod, the surface of the connecting rod is fixedly connected with a connecting plate, the left side and the right side of the connecting plate are fixedly connected with first rotating rods, the surfaces of the first rotating rods are rotatably connected with adjusting plates, and the ends, away from the first rotating rods, of the adjusting plates are rotatably connected with second rotating rods. The air cylinder is started, the output shaft of the air cylinder drives the connecting rod to be close to the mounting plate, due to the fact that the overall length of the air cylinder and the connecting rod is changed, the adjusting plate rotates on the surfaces of the first rotating rod and the second rotating rod, the included angle between the adjusting plate and the connecting plate and the included angle between the adjusting plate and the moving plate are changed, the moving plate is pushed to move in the guide groove, and the three tensioning plates are far away from one another; and the contact area is changed, so that the yarn is tensioned.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic edge finishing machines, in particular to a yarn tensioning structure for a pneumatic edge finishing machine. Background Technique

[0002] A pneumatic edge finishing machine is a device that uses pneumatic technology for edge treatment, mainly used in the field of textile manufacturing technology. Especially during the process of yarn folding, it can provide guiding and positioning functions to help solve the problem of inconveniently fixing cloth edges of different thicknesses. The design and application of the pneumatic edge finishing machine, especially its application on air-jet looms, reflect its characteristics of achieving edge finishing weaving through pneumatic means. This not only applies to high-speed weaving but also has the advantages of simple structure and convenient operation.

[0003] When the pneumatic edge finishing machine is working, since the length of the yarn is generally long, during the process of transporting the yarn to the pneumatic edge finishing machine by the conveying roller, the yarn is prone to loosening, resulting in yarn entanglement or dislocation, thereby affecting the normal use of the pneumatic edge finishing machine. Content of the Utility Model

[0004] The purpose of the utility model is to provide a yarn tensioning structure for a pneumatic edge finishing machine to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A yarn tensioning structure for a pneumatic edge finishing machine, including a mounting plate, and a tensioning assembly is fixedly connected to the back surface of the mounting plate; the tensioning assembly includes a cylinder; the output end of the cylinder is fixedly connected with a connecting rod, a connecting plate is fixedly connected to the surface of the connecting rod, the left and right sides of the connecting plate are fixedly connected with a first rotating rod, a regulating plate is rotatably connected to the surface of the first rotating rod, a second rotating rod is rotatably connected to the end of the regulating plate away from the first rotating rod, a moving plate is fixedly connected to the surface of the second rotating rod, a tensioning plate is fixedly connected to the side of the moving plate away from the connecting rod, a limiting plate is fixedly connected to the side of the mounting plate away from the cylinder, and a guiding groove is opened in the middle of the limiting plate.

[0006] As a further preferred of this technical solution, the number of the connecting plates is set to three, the moving plate is located inside the guiding groove, the tensioning plate adopts an arc-shaped structure, a plurality of moving grooves are arranged on the surface of the tensioning plate, and the limiting plate and the output shaft of the cylinder are slidably connected.

[0007] As a further preference of the present technical solution, a bottom plate is fixedly connected to the bottom end of the mounting plate. A first mounting bracket is fixedly connected to the top end of the bottom plate. A first chute is provided on the inner wall of the first mounting bracket. A first screw rod is rotatably connected to the inside of the first chute. A slider is threadedly connected to the surface of the first screw rod. A regulating roller is fixedly connected to the side of the slider away from the first mounting bracket. A rotating handle is fixedly connected to the top end of the first screw rod.

[0008] As a further preference of the present technical solution, two first chutes are provided. The slider is adapted to the first chute. The rotating handle is located at the top end of the first mounting bracket.

[0009] As a further preference of the present technical solution, a second mounting bracket is fixedly connected to the top end of the bottom plate. A rotating shaft is rotatably connected to the inner wall of the second mounting bracket. A lower conveying roller is fixedly sleeved on the surface of the rotating shaft.

[0010] As a further preference of the present technical solution, a second chute is provided on the inner wall of the second mounting bracket. A second screw rod is rotatably connected to the inside of the second chute. A rotating plate is fixedly connected to the top end of the second screw rod. A regulating block is threadedly connected to the surface of the second screw rod. An upper conveying roller is rotatably connected to the inside of the regulating block.

[0011] As a further preference of the present technical solution, two second chutes are provided. The two second chutes are adapted to the regulating block. The shapes and sizes of the upper conveying roller and the lower conveying roller correspond to each other.

[0012] The utility model provides a yarn tensioning structure for a pneumatic edge trimming machine, which has the following beneficial effects:

[0013] (1) By starting the air cylinder, the output shaft thereof drives the connecting rod to approach the mounting plate. Since the overall length of the air cylinder and the connecting rod changes, the adjusting plate rotates on the surfaces of the first rotating rod and the second rotating rod. The included angles between the adjusting plate and the connecting plate and the moving plate change, and the moving plate is pushed to move in the guiding groove. The three tensioning plates move away from each other, and their contact areas change, thereby realizing the tensioning of the yarn.

[0014] (2) By rotating the rotating plate, the second screw rod rotates. The regulating block drives the upper conveying roller to move up and down inside the second chute, thereby adjusting the distance between the upper conveying roller and the lower conveying roller to adapt to yarns of different sizes. The yarn is positioned by the limiting grooves on the upper conveying roller and the lower conveying roller, thereby preventing the yarn from shifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the utility model;

[0016] Figure 2 Schematic diagram of the back structure of the present utility model;

[0017] Figure 3 Schematic diagram of the structure of the tensioning assembly of the present utility model;

[0018] Figure 4 Schematic sectional view of the second mounting bracket of the present utility model.

[0019] In the figure: 1, mounting plate; 2, tensioning assembly; 201, cylinder; 202, connecting rod; 203, connecting plate; 204, first rotating rod; 205, adjusting plate; 206, second rotating rod; 207, moving plate; 208, tensioning plate; 209, limiting plate; 210, guiding groove; 3, bottom plate; 4, first mounting bracket; 5, first sliding groove; 6, first screw; 7, slider; 8, adjusting roller; 9, rotating handle; 10, second mounting bracket; 11, rotating shaft; 12, lower conveying roller; 13, second sliding groove; 14, second screw; 15, rotating plate; 16, adjusting block; 17, upper conveying roller. Specific embodiments

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0021] The present utility model provides a technical solution: As shown in Figure 1 and Figure 4 , in this embodiment, a yarn tensioning structure for a pneumatic edge trimming machine includes a mounting plate 1, and a tensioning assembly 2 is fixedly connected to the back surface of the mounting plate 1; the tensioning assembly 2 includes a cylinder 201; the output end of the cylinder 201 is fixedly connected to a connecting rod 202, a connecting plate 203 is fixedly connected to the surface of the connecting rod 202, first rotating rods 204 are fixedly connected to the left and right sides of the connecting plate 203, an adjusting plate 205 is rotatably connected to the surface of the first rotating rod 204, a second rotating rod 206 is rotatably connected to one end of the adjusting plate 205 away from the first rotating rod 204, a moving plate 207 is fixedly connected to the surface of the second rotating rod 206, a tensioning plate 208 is fixedly connected to the side of the moving plate 207 away from the connecting rod 202, a limiting plate 209 is fixedly connected to the side of the mounting plate 1 away from the cylinder 201, and a guiding groove 210 is opened in the middle of the limiting plate 209.

[0022] By starting the cylinder 201, its output shaft drives the connecting rod 202 to approach the mounting plate 1. Since the overall length of the cylinder 201 and the connecting rod 202 changes, the adjusting plate 205 rotates on the surfaces of the first rotating rod 204 and the second rotating rod 206, the included angle between the adjusting plate 205 and the connecting plate 203 and the moving plate 207 changes, and the moving plate 207 is pushed to move in the guiding groove 210, and the three tensioning plates 208 move away from each other, changing their contact area, thereby realizing the tensioning of the yarn.

[0023] There are three connecting plates 203. The moving plate 207 is located inside the guiding groove 210. The tensioning plate 208 adopts an arc-shaped structure. A plurality of moving grooves are arranged on the surface of the tensioning plate 208. The limiting plate 209 is slidably connected to the output shaft of the air cylinder 201.

[0024] The bottom end of the mounting plate 1 is fixedly connected to a bottom plate 3. The top end of the bottom plate 3 is fixedly connected to a first mounting bracket 4. A first sliding groove 5 is formed in the inner wall of the first mounting bracket 4. A first screw rod 6 is rotatably connected inside the first sliding groove 5. A slider 7 is threadedly connected to the surface of the first screw rod 6. One side of the slider 7 away from the first mounting bracket 4 is fixedly connected to an adjusting roller 8. The top end of the first screw rod 6 is fixedly connected to a rotating handle 9.

[0025] By rotating the rotating handle 9, the first screw rod 6 rotates, and the slider 7 drives the adjusting roller 8 to move up and down, so as to finely adjust the tension degree of the yarn and make it in a taut state.

[0026] There are two first sliding grooves 5. The slider 7 is adapted to the first sliding groove 5. The rotating handle 9 is located at the top end of the first mounting bracket 4.

[0027] The top end of the bottom plate 3 is fixedly connected to a second mounting bracket 10. A rotating shaft 11 is rotatably connected to the inner wall of the second mounting bracket 10. A lower conveying roller 12 is fixedly sleeved on the surface of the rotating shaft 11.

[0028] A second sliding groove 13 is formed in the inner wall of the second mounting bracket 10. A second screw rod 14 is rotatably connected inside the second sliding groove 13. The top end of the second screw rod 14 is fixedly connected to a rotating plate 15. An adjusting block 16 is threadedly connected to the surface of the second screw rod 14. An upper conveying roller 17 is rotatably connected inside the adjusting block 16.

[0029] By rotating the rotating plate 15, the second screw rod 14 rotates, and the adjusting block 16 drives the upper conveying roller 17 to move up and down inside the second sliding groove 13, so as to adjust the distance between the upper conveying roller 17 and the lower conveying roller 12 to adapt to yarns of different sizes, and position the yarn through the limiting grooves on the upper conveying roller 17 and the lower conveying roller 12, thereby preventing the yarn from shifting.

[0030] There are two second sliding grooves 13. The two second sliding grooves 13 are adapted to the adjusting block 16. The shapes and sizes of the upper conveying roller 17 and the lower conveying roller 12 correspond to each other.

[0031] The present utility model provides a yarn tensioning structure for a pneumatic edge trimming machine. The specific working principle is as follows:

[0032] In use, pass the yarn through between the upper conveying roller 17 and the lower conveying roller 12, and successively bypass the tensioning plate 208 and the adjusting roller 8. Rotate the rotating plate 15 to make the second screw 14 rotate. The adjusting block 16 drives the upper conveying roller 17 to move up and down inside the second chute 13, so as to adjust the distance between the upper conveying roller 17 and the lower conveying roller 12 to adapt to yarns of different sizes, and position the yarn through the limiting grooves on the upper conveying roller 17 and the lower conveying roller 12 to prevent the yarn from shifting during conveying. When it is necessary to adjust the tension of the yarn, start the cylinder 201 so that its output shaft drives the connecting rod 202 to approach the mounting plate 1. Since the overall length of the cylinder 201 and the connecting rod 202 changes, the adjusting plate 205 rotates on the surfaces of the first rotating rod 204 and the second rotating rod 206. The included angles between the adjusting plate 205 and the connecting plate 203 and the moving plate 207 change, and the moving plate 207 is pushed to move in the guide groove 210. The three tensioning plates 208 move away from each other, changing their contact areas, thereby realizing the tensioning of the yarn. At the same time, rotate the rotating handle 9 to make the first screw 6 rotate. The slider 7 drives the adjusting roller 8 to move up and down, so as to finely adjust the tension of the yarn to make it in a taut state.

[0033] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A yarn tensioning structure for a pneumatic edge finishing machine, comprising a mounting plate (1), characterized in that: A tensioning assembly (2) is fixedly connected to the back surface of the mounting plate (1); the tensioning assembly (2) includes a cylinder (201); the output end of the cylinder (201) is fixedly connected to a connecting rod (202), a connecting plate (203) is fixedly connected to the surface of the connecting rod (202), first rotating rods (204) are fixedly connected to the left and right sides of the connecting plate (203), an adjusting plate (205) is rotatably connected to the surface of the first rotating rod (204), a second rotating rod (206) is rotatably connected to the end of the adjusting plate (205) away from the first rotating rod (204), a moving plate (207) is fixedly connected to the surface of the second rotating rod (206), a tensioning plate (208) is fixedly connected to the side of the moving plate (207) away from the connecting rod (202), a limiting plate (209) is fixedly connected to the side of the mounting plate (1) away from the cylinder (201), and a guiding groove (210) is formed in the middle of the limiting plate (209).

2. The yarn tensioning structure for a pneumatic edge trimming machine according to claim 1, wherein: The number of the connecting plates (203) is three, the moving plate (207) is located inside the guiding groove (210), the tensioning plate (208) adopts an arc-shaped structure, a plurality of moving grooves are arranged on the surface of the tensioning plate (208), and the output shaft of the limiting plate (209) and the cylinder (201) are slidably connected.

3. The yarn tensioning structure for a pneumatic edge trimming machine according to claim 1, wherein: A bottom plate (3) is fixedly connected to the bottom end of the mounting plate (1), a first mounting bracket (4) is fixedly connected to the top end of the bottom plate (3), a first sliding groove (5) is formed in the inner wall of the first mounting bracket (4), a first screw rod (6) is rotatably connected to the inside of the first sliding groove (5), a slider (7) is threadedly connected to the surface of the first screw rod (6), an adjusting roller (8) is fixedly connected to the side of the slider (7) away from the first mounting bracket (4), and a rotating handle (9) is fixedly connected to the top end of the first screw rod (6).

4. The yarn tensioning structure for a pneumatic edge trimming machine according to claim 3, wherein: The number of the first sliding grooves (5) is two, the slider (7) is adapted to the first sliding groove (5), and the rotating handle (9) is located at the top end of the first mounting bracket (4).

5. A yarn tensioning structure for a pneumatic edge trimming machine according to claim 3, characterized in that: A second mounting bracket (10) is fixedly connected to the top end of the bottom plate (3), a rotating shaft (11) is rotatably connected to the inner wall of the second mounting bracket (10), and a lower conveying roller (12) is fixedly sleeved on the surface of the rotating shaft (11).

6. The yarn tensioning structure for a pneumatic edge trimming machine according to claim 5, characterized in that: A second sliding groove (13) is formed in the inner wall of the second mounting bracket (10), a second screw rod (14) is rotatably connected to the inside of the second sliding groove (13), a rotating plate (15) is fixedly connected to the top end of the second screw rod (14), an adjusting block (16) is threadedly connected to the surface of the second screw rod (14), and an upper conveying roller (17) is rotatably connected to the inside of the adjusting block (16).

7. The yarn tensioning structure for a pneumatic edge trimming machine according to claim 6, characterized in that: The number of the second sliding grooves (13) is two, the two second sliding grooves (13) are adapted to the adjusting block (16), and the shapes and sizes of the upper conveying roller (17) and the lower conveying roller (12) correspond to each other.

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