A double-head sewing machine

Abstract

The application discloses a double-head sewing machine and belongs to the technical field of sewing equipment. The double-head sewing machine comprises a steel frame, a workbench and sewing machine heads. An X-axis guide rail is horizontally arranged on the workbench. The first sewing machine head and the second sewing machine head can move left and right on the X-axis guide rail. The sewing machine heads can also move forward and backward in the Y-axis direction, and have flexible operation space. The double-head sewing machine is also provided with a tension mechanism, and the deformation caused by uneven tension of cloth is solved. The double-head sewing machine realizes simultaneous sewing of different patterns by two sewing machine heads on the same equipment, improves the production capacity per unit time and greatly improves the production efficiency.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of sewing equipment, and particularly relates to a double-head sewing machine. BACKGROUND

[0002] With the rapid development of the global garment and textile industry, market competition is increasingly fierce, and enterprises have an increasingly urgent demand for improving production efficiency. The traditional single-head sewing machine has low efficiency when processing complex and multi-step sewing tasks, and needs a long working time. The rising labor cost makes many enterprises face huge cost pressure, especially in the labor-intensive garment and textile industry.

[0003] The double-head sewing machine can perform synchronous operation and asynchronous operation, realize complex sewing processes, reduce labor costs, and automatically reduce errors caused by improper operation, thereby improving the stability and reliability of production. However, when complex or delicate sewing tasks are performed at the same time, the fabric tension not only affects the quality of sewing, but also directly relates to the production efficiency and service life of the equipment. SUMMARY

[0004] The main purpose of the application is to provide a double-head sewing machine.

[0005] To achieve the above purpose, the technical scheme adopted by the application is as follows:

[0006] A double-head sewing machine, the sewing machine comprises a steel frame 1, a workbench 2 and a sewing machine head 3, the workbench 2 is fixedly installed on the steel frame 1, an X-axis guide rail 4 is horizontally and fixedly installed on the tabletop of the workbench 2, the X-axis guide rail 4 is two, and a first sewing machine head 31 and a second sewing machine head 32 are respectively arranged at the left and right ends of the X-axis guide rail 4, and a tension mechanism 311 is arranged at the two ends of the sewing machine head 3; the tension mechanism 311 is two groups, each group has two, the tension mechanism 311 is located on the two sides of the sewing machine head 3, the tension mechanism 311 comprises a fixed wheel 312, a movable wheel 313, a tension wheel 314 and a fixed frame 318, the fixed wheel 312 is fixedly connected to the fixed frame 318, the movable wheel 313 is located on one side of the fixed wheel 312, and the movable wheel 313 is movably connected to the fixed frame 318, the tension wheel 314 is located above the fixed wheel 312 and the movable wheel 313, the tension wheel 314 is movably connected to the fixed frame 318, the fixed frame 318 is provided with a first limiting groove 319 and a second limiting groove 320, and the shaft centers of the fixed wheel 312, the movable wheel 313 and the tension wheel 314 form an isosceles triangle.

[0007] Further, the tension mechanism 311 further comprises a pneumatic cylinder 317, the pneumatic cylinder 317 is two, the two ends of the shaft of the tension wheel 314 are fixedly connected with the pneumatic cylinder 317, and the pneumatic cylinder 317 is fixedly connected to the fixed frame 318 through an LB foot support.

[0008] Further, the shaft of the movable wheel 313 is movably installed in the second limiting groove 320, and a compression spring 315 is arranged between the shaft and the second limiting groove 320, and the shaft of the tension wheel 314 is movably installed in the first limiting groove 319.

[0009] Further, the tension mechanism 311 further comprises a tension sensor 316, which is installed on the piston rod of the air cylinder 317.

[0010] Further, the first sewing machine head 31 and the second sewing machine head 32 are each provided with an independent driving system to realize independent movement and sewing functions.

[0011] Further, the first sewing machine head 31 and the second sewing machine head 32 can move and sew together.

[0012] Further, the workbench 2 is further provided with a rack 5 parallel to the X-axis guide rail 4, and the inside of the sewing machine head 3 is fixedly installed with a gear engaged with the rack 5, and the sewing machine head 3 moves left and right on the gear and the rack 5 driven by the X-axis driving motor 6, and the sewing machine head 3 is further fixedly installed with a Y-axis motor 7, and the sewing machine head 3 can realize forward and backward movement in the Y-axis direction.

[0013] Compared with the prior art, the beneficial effects of the present application are:

[0014] 1. In the present application, the double-head sewing machine can work simultaneously or independently, realizing simultaneous sewing of different patterns by two sewing machine heads on the same device, greatly improving the production efficiency, and the two sewing machine heads work together, increasing the flexibility and applicability of the device.

[0015] 2. In the present application, through the isosceles triangle configuration of the fixed wheel, the movable wheel and the tension wheel, and the cooperation of the tension mechanism and the tension sensor, the tension of different materials during the sewing process can be effectively controlled, and the sewing quality is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a first structure schematic view of the double-head sewing machine.

[0017] Fig. 2 It is a second structure schematic view of the double-head sewing machine.

[0018] Fig. 3 It is a partial structure schematic view of the double-head sewing machine.

[0019] REFERENCE NUMERALS

[0020] 1. Steel frame; 2. Worktable; 3. Sewing machine head; 4. X-axis guide rail; 31. First sewing machine head; 32. Second sewing machine head; 311. Tension mechanism; 312. Fixed wheel; 313. Movable wheel; 314. Tension wheel; 315. Compression spring; 316. Tension sensor; 317. Cylinder; 318. Fixing frame; 319. First limiting groove; 320. Second limiting groove; 5. Rack; 6. X-axis drive motor; 7. Y-axis motor. Detailed Implementation

[0021] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby providing a clearer and more explicit definition of the scope of protection of the present invention.

[0022] Example

[0023] like Figs. 1-3 As shown, a double-headed sewing machine includes a steel frame 1, a worktable 2, and sewing machine heads 3. The worktable 2 is fixedly mounted on the steel frame 1. An X-axis guide rail 4 is horizontally fixedly mounted on the worktable 2. There are two X-axis guide rails 4, with a first sewing machine head 31 and a second sewing machine head 32 respectively located at the left and right ends of the X-axis guide rails 4. Tension mechanisms 311 are provided at both ends of the sewing machine heads 3. There are two sets of tension mechanisms 311, with two in each set. The tension mechanisms 311 are located on both sides of the sewing machine heads 3. The tension mechanism 311 includes a fixed wheel 312 and a movable wheel 312. The assembly includes a movable wheel 313, a tension wheel 314, and a fixed frame 318. The fixed wheel 312 is fixedly connected to the fixed frame 318. The movable wheel 313 is located on one side of the fixed wheel 312 and is movably connected to the fixed frame 318. The tension wheel 314 is located above the fixed wheel 312 and the movable wheel 313 and is movably connected to the fixed frame 318. The fixed frame 318 is provided with a first limiting groove 319 and a second limiting groove 320. The axes of the fixed wheel 312, the movable wheel 313, and the tension wheel 314 are isosceles triangles.

[0024] Furthermore, the tension mechanism 311 also includes two cylinders 317. The two ends of the shaft of the tension wheel 314 are fixedly connected to the cylinders 317 respectively. The cylinders 317 are fixedly connected to the fixed frame 318 through the LB foot bracket.

[0025] Furthermore, the shaft of the movable wheel 313 is movably mounted in the second limiting groove 320, and a compression spring 315 is provided between the shaft and the second limiting groove 320. The shaft of the tension wheel 314 is movably mounted in the first limiting groove 319.

[0026] Furthermore, the tension mechanism 311 also includes a tension sensor 316, which is mounted on the piston rod of the cylinder 317.

[0027] Further, the first sewing head 31 and the second sewing head 32 are each provided with an independent driving system to realize independent movement and sewing functions.

[0028] Further, the first sewing head 31 and the second sewing head 32 can move and sew together.

[0029] Further, the workbench 2 is also provided with a rack 5 parallel to the X-axis guide rail 4, and the inside of the sewing head 3 is fixedly installed with a gear engaged with the rack 5, the sewing head 3 moves left and right on the rack 5 by driving the gear through the X-axis driving motor 6, and the sewing head 3 is also fixedly installed with a Y-axis motor 7, and the sewing head 3 can realize forward and backward movement in the Y-axis direction.

[0030] Working principle:

[0031] X-axis movement of the sewing head 3: the X-axis driving motor 6 drives the gear engaged with the rack 5, so that the first sewing head 31 and the second sewing head 32 can move left and right on the X-axis guide rail 4.

[0032] Y-axis movement of the sewing head 3: the first sewing head 31 and the second sewing head 32 are also fixedly installed with a Y-axis motor 7, the Y-axis motor 7 drives the sewing head to move forward and backward in the direction perpendicular to the X-axis, thereby realizing movement in the Y-axis direction.

[0033] Tension control of the cloth: in order to ensure that the cloth maintains appropriate tension during sewing, the fixed wheel 312, the movable wheel 313 and the tension wheel 314 in the tension mechanism 311 are arranged in an isosceles triangle, and the tension wheel 314 is driven to move up and down under the action of the air cylinder 317, when the tension wheel 314 moves downward, the movable wheel 313 is subjected to a pressing force, so that the compression spring 315 connected with the movable wheel 313 is compressed, when the tension wheel 314 moves upward, the compression spring 315 provides a rebound force for the movable wheel 313, and the fixed wheel 312 provides a supporting effect, the fixed wheel 312, the movable wheel 313 and the tension wheel 314 cooperate with each other to ensure that the cloth can be accurately tensioned or loosened, at the same time, the tension sensor 316 can monitor the tension of the cloth and feedback to the control system to adjust the pressure of the air cylinder 317, and then adjust the position of the tension wheel 314 to control the tension.

[0034] Independent / collaborative work of the sewing head 3: the first sewing head 31 and the second sewing head 32 have independent driving systems, can perform different sewing tasks respectively, and can also move and sew the same pattern synchronously, this flexibility makes the machine adapt to various sewing needs.

[0035] The above merely describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above embodiments, but any equivalent modifications or changes made by those skilled in the art according to the disclosed content of the present application shall be included in the protection scope recorded in the claims.

Claims

1. A double-head sewing machine, comprising a steel frame (1), a worktable (2) and a sewing machine head (3), characterized in that, The steel frame (1) is fixedly installed with a workbench (2), the workbench (2) is horizontally fixedly installed with X-axis guide rails (4), the X-axis guide rails (4) are two, the left and right ends of the X-axis guide rails (4) are respectively provided with a first sewing machine head (31) and a second sewing machine head (32), the two ends of the sewing machine head (3) are provided with a tension mechanism (311); the tension mechanism (311) is two groups, each group is two, the tension mechanism (311) is located on the two sides of the sewing machine head (3), the tension mechanism (311) comprises a fixed wheel (312), a movable wheel (313), a tension wheel (314) and a fixed frame (318), the fixed wheel (312) is fixedly connected to the fixed frame (318), the movable wheel (313) is located on the side of the fixed wheel (312), the movable wheel (313) is movably connected to the fixed frame (318), the tension wheel (314) is located above the fixed wheel (312) and the movable wheel (313), the tension wheel (314) is movably connected to the fixed frame (318), the fixed frame (318) is provided with a first limiting groove (319) and a second limiting groove (320), the shafts of the fixed wheel (312), the movable wheel (313) and the tension wheel (314) form an isosceles triangle; The tension mechanism (311) further comprises a gas cylinder (317), the gas cylinder (317) is two, the shafts of the tension wheel (314) are respectively fixedly connected with the gas cylinder (317), and the gas cylinder (317) is fixedly connected to the fixed frame (318) through an LB foot support; The shaft of the movable wheel (313) is movably installed in the second limiting groove (320), a compression spring (315) is arranged between the shaft of the movable wheel (313) and the second limiting groove (320), and the shaft of the tension wheel (314) is movably installed in the first limiting groove (319); The tension mechanism (311) further comprises a tension sensor (316), which is installed on the piston rod of the gas cylinder (317).

2. The twin-head sewing machine according to claim 1, characterized in that: The first sewing machine head (31) and the second sewing machine head (32) are provided with independent driving systems to realize independent movement and sewing functions.

3. The twin-head sewing machine according to claim 1, characterized in that: The first sewing machine head (31) and the second sewing machine head (32) can move and sew together.

4. The twin-head sewing machine according to claim 1, characterized in that: The workbench (2) is further provided with a rack (5) parallel to the X-axis guide rails (4), a gear meshing connected with the rack (5) is fixedly installed in the sewing machine head (3), the sewing machine head (3) drives the gear to move left and right on the rack (5) through an X-axis driving motor (6), and the sewing machine head (3) is further fixedly installed with a Y-axis motor (7).

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