Cloth feeding mechanism of sewing machine

Abstract

The utility model relates to the technical field of oil cloth feeding, and particularly discloses a sewing machine cloth feeding mechanism which comprises a cloth feeding mechanism body, a motor is arranged in the cloth feeding mechanism, one side of the motor is fixedly connected with a driving shaft, the driving shaft is fixedly sleeved with a driving gear, one side of the driving gear is provided with a driven gear, and one side of the driven gear is meshed with a first rotating gear. A first transmission roller is fixedly connected to one side of the first rotating gear, a second transmission roller is installed on one side of the first transmission roller, a second rotating gear is arranged on one side of the second transmission roller, and an air cylinder is arranged on one side of the second rotating gear. The cloth conveying device has the beneficial effects that cloth is wound on the first conveying roller, the first rotating gear drives the first conveying roller to rotate, the cloth is conveyed, and finally the second rotating gear drives the second conveying roller to convey the cloth; the gap between the first conveying roller and the second conveying roller can be adjusted through cooperation of the air cylinder, the small gear, the large gear, the rotating rod and the short rod.

Description

Technical Field

[0001] The utility model relates to the technical field of cloth feeding, in particular to a cloth feeding mechanism for a sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on fabric to connect or sew one or more layers of fabric together. In the textile industry, it is often necessary to transport the produced fabric to the bottom of the sewing machine for sewing.

[0003] In the prior art, when sewing cloth, the operator needs to continuously push the cloth into the sewing machine with one hand, and press the cloth with the other hand and slowly pull it out of the sewing machine.

[0004] However, it is difficult for operators to ensure sustained pulling force, and they are easily fatigued after long-term operation, which affects the processing quality. In addition, general cloth feeding mechanisms can only transport cloth of one thickness. When transporting cloth of different thicknesses, the equipment needs to be replaced, which reduces work efficiency. Utility Model Content

[0005] The utility model aims to provide a cloth feeding mechanism for a sewing machine to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a cloth feeding mechanism for a sewing machine, the cloth feeding mechanism for a sewing machine comprising:

[0007] The cloth feeding mechanism body is provided with a motor, one end of the motor is fixedly connected with a driving shaft, and one side of the driving shaft is sleeved with a driving gear.

[0008] A first rotating gear is arranged on one side of the driving gear, and one side of the first rotating gear is fixedly connected to the first transmission roller. A second transmission roller is arranged on one side of the first transmission roller, and one side of the second transmission roller is fixedly connected to the second rotating gear.

[0009] A first support seat is arranged at the lower side of the second rotating gear, a second support seat is installed at one side of the first support seat, a tensioning roller is sleeved inside the second support seat, and a friction sleeve is sleeved on the outer ring surface of the tensioning roller.

[0010] Preferably, a support platform is fixedly connected to the lower side of the motor, the lower surface of the support platform is fixedly connected to the support plate, the drive shaft is sleeved and installed in the first support seat and is rotatably connected to the first support seat, and the driving gear is fixedly connected to the drive shaft.

[0011] Preferably, a first connecting rod is provided on one side of the driving gear, the first connecting rod is sleeved and mounted on the driving shaft and is rotatably connected to the driving shaft, a driven gear is meshed with one side of the driving gear, the driven gear and the first connecting rod are rotatably connected via a connecting column, and the driving gear and the driven gear are meshed for transmission.

[0012] Preferably, one side of the driven gear is meshed with the first rotating gear for transmission, a connecting shaft is provided inside the first rotating gear and is rotatably connected to the connecting shaft, the first transmission roller is sleeved and installed on the connecting shaft and is rotatably connected to the connecting shaft, one end of the connecting shaft is sleeved and installed on the first support rod and is fixedly connected to the first support rod, one end of the first support rod is sleeved and installed on the driving shaft and is rotatably connected to the driving shaft, and one end of the connecting shaft is sleeved and installed on the rotating rod and is rotatably connected to the rotating rod.

[0013] Preferably, a small gear is meshed on one side of the first rotating gear, and the small gear is rotationally connected to the rotating rod through a connecting column. The small gear and the second rotating gear are meshed and transmitted through a large gear. A short rod is provided on one side of the large gear, and the short rod, the rotating rod and the large gear are rotationally connected through a connecting column.

[0014] Preferably, one end of the short rod is sleeved with a connecting shaft, the second transmission roller is sleeved and installed on the connecting shaft and is rotatably connected to the connecting shaft, a second support rod is provided on one side of the second transmission roller, one end of the second support rod is fixedly connected to the connecting shaft, the other end of the second support rod is sleeved with a fixed shaft and is rotatably connected to the fixed shaft, one end of the fixed shaft is sleeved with a second connecting rod and is rotatably connected to the second connecting rod, and both ends of the fixed shaft are fixedly sleeved and installed in the first support seat.

[0015] Preferably, one end of the first connecting rod and the second connecting rod is fixedly connected with a fixed column, a connecting sleeve is provided on the fixed column and is rotatably connected to the connecting sleeve, a cylinder is fixedly connected to the outer ring surface of the connecting sleeve, a column is arranged at one end of the cylinder, a support column is fixedly connected to the surface of one side of the column, and one end of the cylinder is rotatably connected to the column through the support column.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the cloth is transmitted from the outer periphery of the first transmission roller, and the motor drives the driving shaft to rotate, the driving shaft drives the driving gear to rotate, the driving gear meshes with the driven gear for transmission, so that the driven gear meshes with the first rotating gear for transmission, and thus the first rotating gear drives the first transmission roller to rotate, and then the cloth is preliminarily fed, the cloth passes through the friction sleeve wound on the outer ring surface of the tensioning roller to ensure that the cloth is always in a taut and flat state during transmission, the friction between the cloth and the friction sleeve is increased, the transmission efficiency is improved, the cloth is prevented from bulging and deforming, and the first transmission roller, the second transmission roller and the cloth are prevented from sliding, and the stability of cloth transmission is improved, at this time, the first rotating gear is meshed with the pinion for transmission, and the pinion and The large gear meshes for transmission, and then the large gear meshes for transmission with the second rotating gear, and finally the second rotating gear drives the second transmission roller to rotate, so that the cloth is fed from one side of the second transmission roller to achieve smooth transmission of the cloth, thereby improving the cloth feeding efficiency, improving the production speed and production quality, and the two cylinders set can be used to adjust the distance between the first transmission roller and the second transmission roller, and the first connecting rod and the second connecting rod are driven to move under the telescopic action of the cylinder, and the large gear and the small gear can be moved up and down under the cooperation of the rotating rod, the small gear, the large gear and the short rod, thereby realizing the gap adjustment between the first transmission roller and the second transmission roller, and at the same time ensuring that the power of the driving shaft is not interrupted, avoiding the trouble of starting and stopping the machine, saving production time, and thus improving the production speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall front view of the utility model;

[0018] Figure 2 This is a rear view of the overall structure of the utility model;

[0019] Figure 3 It is a top view of the overall structure of the utility model.

[0020] In the figure: 1. cloth feeding mechanism; 2. motor; 3. driving shaft; 4. driving gear; 5. first rotating gear; 6. first transmission roller; 7. second transmission roller; 8. second rotating gear; 9. first supporting seat; 10. second supporting seat; 11. tensioning roller; 12. friction sleeve; 13. supporting platform; 14. supporting plate; 15. first connecting rod; 16. driven gear; 17. connecting column; 18. connecting shaft; 19. first supporting rod; 20. rotating rod; 21. small gear; 22. large gear; 23. short rod; 24. second supporting rod; 25. fixed shaft; 26. second connecting rod; 27. fixed column; 28. connecting sleeve; 29. ​​cylinder; 30. column; 31. supporting column. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0022] See also Figure 1-Figure 3 The utility model provides a technical solution: a cloth feeding mechanism 1 body, a motor 2 is arranged in the cloth feeding mechanism 1, one end of the motor 2 is fixedly connected to a driving shaft 3, one side of the driving shaft 3 is sleeved with a driving gear 4, one side of the driving gear 4 is arranged with a first rotating gear 5, one side of the first rotating gear 5 is fixedly connected to a first transmission roller 6, one side of the first transmission roller 6 is arranged with a second transmission roller 7, one side of the second transmission roller 7 is fixedly connected with a second rotating gear 8, and a first supporting seat 9 is arranged at the lower side of the second rotating gear 8, a second supporting seat 10 is installed at one side of the first supporting seat 9, a tensioning roller 11 is sleeved in the second supporting seat 10, and a friction sleeve 12 is sleeved on the outer ring surface of the tensioning roller 11.

[0023] The cloth is transmitted from the outer periphery of the first transmission roller 6 on one side of the cloth feeding mechanism 1, is wound around the first transmission roller 6, and then is wound around the outer ring surface of the friction sleeve 12 arranged on the outer periphery of the tensioning roller 11, so that the cloth can be kept in a taut and flat state at the time of transmission to prevent it from bulging and deforming, and finally is wound out through the second transmission roller 7, so that the cloth can be simply and conveniently transmitted flatly, thereby improving the production and processing efficiency and avoiding the trouble of manual operation. Embodiment 2

[0024] On the basis of the first embodiment, in order to facilitate the rotation of the first transmission roller 6 and the second transmission roller 7, a support platform 13 is fixedly connected to the lower side of the motor 2, and the lower surface of the support platform 13 is fixedly connected to the support plate 14. The drive shaft 3 is sleeved and installed in the first support seat 9 and is rotatably connected to the first support seat 9. The driving gear 4 is fixedly connected to the driving shaft 3. A first connecting rod 15 is provided on one side of the driving gear 4. The first connecting rod 15 is sleeved and installed on the driving shaft 3 and is rotatably connected to the driving shaft 3. A driven gear 16 is meshed on one side of the driving gear 4. The driven gear 16 and the first connecting rod 15 are connected by a connecting column 17. Rotationally connected, the driving gear 4 is meshed with the driven gear 16 for transmission, one side of the driven gear 16 is meshed with the first rotating gear 5 for transmission, a connecting shaft 18 is sleeved inside the first rotating gear 5 and is rotationally connected to the connecting shaft 18, the first transmission roller 6 is sleeved and installed on the connecting shaft 18 and is rotationally connected to the connecting shaft 18, one end of the connecting shaft 18 is sleeved with a first support rod 19 and is fixedly connected to the first support rod 19, one end of the first support rod 19 is sleeved and installed on the driving shaft 3 and is rotationally connected to the driving shaft 3, and one end of the connecting shaft 18 is sleeved and installed with a rotating rod 20 and is rotationally connected to the rotating rod 20.

[0025] The motor 2 drives the driving shaft 3 to rotate, so that the driving shaft 3 drives the driving gear 4 to rotate, and the driving gear 4 is meshed with the driven gear 16 on one side for transmission, and then the driven gear 16 is meshed with the first rotating gear 5 for transmission, and the first rotating gear 5 drives the first transmission roller 6 to rotate on the connecting shaft 18 under the rotation of the first rotating gear 5, so as to realize the preliminary conveying of the cloth, and the cloth is wound around the outer periphery of the tensioning roller 11 to tension the cloth, and the first rotating gear 5 is meshed with the small gear 21 for transmission, and the small gear 21 is meshed with the large gear 22 for transmission, so that the large gear 22 and the second rotating gear 8 are rotated, so as to drive the second transmission roller 7 to rotate, so that the cloth is wound out from one side of the second transmission roller 7, and the rapid transmission of the cloth is completed, avoiding long-term manual operation by manual labor, and making the cloth feeding action more precise. Embodiment 3

[0026] On the basis of the second embodiment, in order to facilitate the transmission of fabrics of different thicknesses, a small gear 21 is meshed on one side of the first rotating gear 5, and the small gear 21 is rotatably connected to the rotating rod 20 through the connecting column 17. The small gear 21 and the second rotating gear 8 are meshed and transmitted through the large gear 22. A short rod 23 is provided on one side of the large gear 22. The short rod 23, the rotating rod 20, and the large gear 22 are rotatably connected through the connecting column 17. One end of the short rod 23 is sleeved with a connecting shaft 18. The second transmission roller 7 is sleeved and installed on the connecting shaft 18 and is rotatably connected to the connecting shaft 18. A second support rod 24 is provided on one side of the second transmission roller 7. One end of the second support rod 24 is connected to the connecting shaft 18 is fixedly connected, the other end of the second support rod 24 is sleeved with a fixed shaft 25 and is rotatably connected to the fixed shaft 25, one end of the fixed shaft 25 is sleeved with a second connecting rod 26 and is rotatably connected to the second connecting rod 26, both ends of the fixed shaft 25 are fixedly sleeved and installed in the first support seat 9, the first connecting rod 15 and one end of the second connecting rod 26 are fixedly connected with a fixed column 27, a connecting sleeve 28 is sleeved on the fixed column 27 and is rotatably connected to the connecting sleeve 28, a cylinder 29 is fixedly connected to the outer ring surface of the connecting sleeve 28, a column 30 is arranged at one end of the cylinder 29, a support column 31 is fixedly connected to the surface of one side of the column 30, and one end of the cylinder 29 is rotatably connected to the column 30 through the support column 31.

[0027] The cylinder 29 is extended and pushed to push the fixed column 27 fixedly connected to one end of the first connecting rod 15 and the second connecting rod 26, so that the first connecting rod 15 rotates on the driving shaft 3, and the second connecting rod 26 rotates on the fixed shaft 25. When the cylinder 29 arranged on one side of the fixed shaft 25 retracts, the short rod 23 is pulled by the second connecting rod 26 to gradually level, so that the distance between the first transmission roller 6 and the second transmission roller 7 is increased, and thicker fabrics can be transmitted. When the cylinder 29 arranged on one side of the driving shaft 3 retracts, the rotating rod 20 can also be pulled by the first connecting rod 15. Now adjust the distance between the first transmission roller 6 and the second transmission roller 7. In order to avoid shutting down the machine when adjusting the gap between the first transmission roller 6 and the second transmission roller 7, the large gear 22 and the small gear 21 can be moved up and down by the cooperation of the large gear 22, the small gear 21, the short rod 23, and the rotating rod 20. On the one hand, it is convenient to realize the gap change. On the other hand, when the gap changes, the power of the driving shaft 3 is not interrupted, thereby avoiding the trouble of starting and stopping the machine, and also avoiding the trouble of changing equipment due to different cloth thickness, thereby improving the practicality of the entire device.

[0028] In actual use, the cloth is transmitted from the outer periphery of the first transmission roller 6, and the motor 2 drives the driving shaft 3 to rotate, and the driving shaft 3 drives the driving gear 4 to rotate, and the driving gear 4 is meshed with the driven gear 16 for transmission, so that the driven gear 16 is meshed with the first rotating gear 5 for transmission, so that the first rotating gear 5 drives the first transmission roller 6 to rotate, and then the cloth is initially transmitted. The cloth passes through the friction sleeve 12 wound on the outer ring surface of the tensioning roller 11 to ensure that the cloth is always in a taut and flat state during transmission to prevent it from bulging and deforming. At this time, the first rotating gear 5 is meshed with the small gear 21 for transmission, and the small gear 21 is meshed with the large gear 22 for transmission, and then the large gear 22 is meshed with the second rotating gear 8 for transmission, and finally the second rotating gear 8 drives the second transmission roller 6 to rotate. The drum 7 rotates, so that the cloth is transmitted from one side of the second transmission roller 7, so as to realize the smooth transmission of the cloth, thereby improving the cloth feeding efficiency, improving the production speed and production quality. The two cylinders 29 can be used to adjust the distance between the first transmission roller 6 and the second transmission roller 7. Under the telescopic action of the cylinder 29, the first connecting rod 15 and the second connecting rod 26 are driven to move. Under the cooperation of the rotating rod 20, the small gear 21, the large gear 22, and the short rod 23, the large gear 22 and the small gear 21 can move up and down, thereby realizing the gap adjustment between the first transmission roller 6 and the second transmission roller 7, so as to transmit cloth of different thicknesses, and at the same time ensure that the power of the driving shaft 3 is not interrupted, avoiding the trouble of starting and stopping the machine, saving production time, and thus improving the production speed.

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cloth feeding mechanism for a sewing machine, characterized in that: The sewing machine cloth feeding mechanism comprises: A cloth feeding mechanism (1) body, wherein a motor (2) is arranged inside the cloth feeding mechanism (1), one end of the motor (2) is fixedly connected to a driving shaft (3), and one side of the driving shaft (3) is sleeved with a driving gear (4); A first rotating gear (5) is provided on one side of the driving gear (4), one side of the first rotating gear (5) is fixedly connected to a first transmission roller (6), a second transmission roller (7) is provided on one side of the first transmission roller (6), and one side of the second transmission roller (7) is fixedly connected to a second rotating gear (8); A first support seat (9) is arranged at the lower side of the second rotating gear (8), a second support seat (10) is installed on one side of the first support seat (9), a tensioning roller (11) is sleeved inside the second support seat (10), and a friction sleeve (12) is sleeved on the outer ring surface of the tensioning roller (11).

2. A cloth feeding mechanism for a sewing machine according to claim 1, characterized in that: A support platform (13) is fixedly connected to the lower side of the motor (2); the lower surface of the support platform (13) is fixedly connected to the support plate (14); the drive shaft (3) is sleeved and mounted in the first support seat (9) and is rotatably connected to the first support seat (9); and the driving gear (4) is fixedly connected to the drive shaft (3).

3. A cloth feeding mechanism for a sewing machine according to claim 2, characterized in that: A first connecting rod (15) is provided on one side of the driving gear (4), the first connecting rod (15) is sleeved and mounted on the driving shaft (3) and is rotatably connected to the driving shaft (3), a driven gear (16) is meshed on one side of the driving gear (4), the driven gear (16) and the first connecting rod (15) are rotatably connected via a connecting column (17), and the driving gear (4) and the driven gear (16) are meshed for transmission.

4. A cloth feeding mechanism for a sewing machine according to claim 3, characterized in that: One side of the driven gear (16) is meshed with the first rotating gear (5) for transmission; a connecting shaft (18) is sleeved inside the first rotating gear (5) and is rotationally connected to the connecting shaft (18); a first transmission roller (6) is sleeved on the connecting shaft (18) and is rotationally connected to the connecting shaft (18); one end of the connecting shaft (18) is sleeved on a first support rod (19) and is fixedly connected to the first support rod (19); one end of the first support rod (19) is sleeved on the driving shaft (3) and is rotationally connected to the driving shaft (3); and one end of the connecting shaft (18) is sleeved on a rotating rod (20) and is rotationally connected to the rotating rod (20).

5. A cloth feeding mechanism for a sewing machine according to claim 4, characterized in that: A small gear (21) is meshed on one side of the first rotating gear (5), and the small gear (21) is rotationally connected to the rotating rod (20) via a connecting column (17). The small gear (21) and the second rotating gear (8) are meshed and transmitted via a large gear (22). A short rod (23) is provided on one side of the large gear (22), and the short rod (23), the rotating rod (20), and the large gear (22) are rotationally connected via a connecting column (17).

6. A cloth feeding mechanism for a sewing machine according to claim 5, characterized in that: One end of the short rod (23) is sleeved with a connecting shaft (18), the second transmission roller (7) is sleeved and mounted on the connecting shaft (18) and is rotatably connected to the connecting shaft (18), a second support rod (24) is provided on one side of the second transmission roller (7), one end of the second support rod (24) is fixedly connected to the connecting shaft (18), the other end of the second support rod (24) is sleeved with a fixed shaft (25) and is rotatably connected to the fixed shaft (25), one end of the fixed shaft (25) is sleeved with a second connecting rod (26) and is rotatably connected to the second connecting rod (26), and both ends of the fixed shaft (25) are fixedly sleeved and mounted in the first support seat (9).

7. A cloth feeding mechanism for a sewing machine according to claim 6, characterized in that: One end of the first connecting rod (15) and the second connecting rod (26) is fixedly connected to a fixing column (27); a connecting sleeve (28) is sleeved on the fixing column (27) and is rotatably connected to the connecting sleeve (28); an outer ring surface of the connecting sleeve (28) is fixedly connected to a cylinder (29); a column (30) is arranged at one end of the cylinder (29); a support column (31) is fixedly connected to a surface of one side of the column (30); and one end of the cylinder (29) is rotatably connected to the column (30) via the support column (31).

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