Double-head sewing machine

Abstract

The invention 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 installed 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 move front and back in the Y-axis direction, and flexible operation space is achieved. The double-head sewing machine is further provided with a tension mechanism, deformation caused by uneven tension on cloth is avoided, the double-head sewing machine achieves the purpose that two sewing machine heads are used for sewing different patterns on the same equipment at the same time, the productivity in unit time is improved, and the production efficiency is greatly improved.

Description

Technical Field

[0001] The invention belongs to the technical field of sewing equipment, and in particular relates to a double-head sewing machine. Background Art

[0002] With the rapid development of the global clothing and textile industry, market competition is becoming increasingly fierce, and companies are more and more eager to improve production efficiency. Traditional single-head sewing machines are inefficient and require long working hours when handling complex, multi-step sewing tasks. The rising labor costs have caused many companies to face huge cost pressures, especially in the labor-intensive clothing and textile industries.

[0003] Double-head sewing machines can perform synchronous and asynchronous operations to achieve complex sewing processes and reduce labor costs. Automated equipment can reduce errors caused by improper human operation and improve production stability and reliability. However, when performing complex or delicate sewing tasks at the same time, fabric tension not only affects the quality of sewing, but is also directly related to production efficiency and the service life of the equipment. Summary of the invention

[0004] Purpose of the invention: The main purpose of the present invention is to provide a double-head sewing machine.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] A double-head sewing machine, the sewing machine comprises a steel frame 1, a workbench 2 and a sewing machine head 3, the steel frame 1 is fixedly mounted with the workbench 2, an X-axis guide rail 4 is horizontally fixedly mounted on the table surface of the workbench 2, the X-axis guide rail 4 is two, the left and right ends of the X-axis guide rail 4 are respectively provided with a first sewing machine head 31 and a second sewing machine head 32, and tension mechanisms 311 are provided at both ends of the sewing machine head 3; the tension mechanisms 311 are two groups, each group has two, the tension mechanisms 311 are located on both sides of the sewing machine head 3, and the tension mechanisms 311 include a fixed wheel 312, a movable wheel 313, a movable wheel 314, a movable wheel 315, a movable wheel 316, a movable wheel 317, a movable wheel 318, a movable wheel 319, a movable wheel 320, a movable wheel 321, a movable wheel 322, a movable wheel 319, a movable wheel 311, a movable wheel 319, a movable wheel 311, a movable wheel 311, a movable wheel 317, a movable wheel 318, a movable wheel 319, a movable wheel 319, a movable wheel 319, a movable wheel 311, a movable wheel 311, a movable wheel 311, a movable wheel 319 ... Wheel 313, tension wheel 314 and fixed frame 318, the fixed wheel 312 is fixedly connected to the fixed frame 318, the movable wheel 313 is located at one 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 axis of the fixed wheel 312, the movable wheel 313 and the tension wheel 314 is an isosceles triangle.

[0007] Furthermore, the tension mechanism 311 also includes two cylinders 317 , and both ends of the axis of the tension wheel 314 are fixedly connected to the cylinders 317 , respectively, and the cylinders 317 are fixedly connected to the fixing frame 318 via an LB tripod.

[0008] Furthermore, the shaft of the movable wheel 313 is movably installed in the second limiting groove 320 , a compression spring 315 is provided 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] Furthermore, the tension mechanism 311 also includes a tension sensor 316 , which is installed on the piston rod of the cylinder 317 .

[0010] Furthermore, the first sewing head 31 and the second sewing head 32 are both provided with independent driving systems to realize their independent movement and sewing functions.

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

[0012] Furthermore, the workbench 2 is also provided with a rack 5 parallel to the X-axis guide rail 4, and a gear meshing with the rack 5 is fixedly installed inside the sewing machine head 3. The sewing machine head 3 moves left and right on the gear and rack 5 driven by the X-axis drive motor 6. The sewing machine head 3 is also 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 present invention has the following beneficial effects:

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

[0015] 2. In the present invention, through the isosceles triangle configuration of the fixed wheel, the movable wheel and the tension wheel, the tension mechanism and the tension sensor cooperate with each other, which can effectively control the tension of different materials during the sewing process and improve the sewing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the first structure of a double-head sewing machine;

[0017] Figure 2 It is a schematic diagram of the second structure of a double-head sewing machine;

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

[0019] Reference numerals

[0020] 1. Steel frame; 2. Workbench; 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. Fixed frame; 319. First limit slot; 320. Second limit slot; 5. Rack; 6. X-axis drive motor; 7. Y-axis motor. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described in detail below in conjunction with 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 making a clearer and more definite definition of the protection scope of the present invention.

[0022] Example

[0023] like Figure 1-3 As shown, a double-head sewing machine comprises a steel frame 1, a workbench 2 and a sewing machine head 3. The workbench 2 is fixedly mounted on the steel frame 1, and an X-axis guide rail 4 is horizontally fixedly mounted on the table surface of the workbench 2. There are two X-axis guide rails 4, and 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. Tension mechanisms 311 are provided at both ends of the sewing machine head 3; the tension mechanisms 311 are two groups, each group has two, and the tension mechanisms 311 are located on both sides of the sewing machine head 3. The tension mechanisms 311 include a fixed wheel 312, an active wheel 313, an active wheel 314, an active wheel 315, an active wheel 316, an active wheel 317, an active wheel 318, an active wheel 319, an active wheel 320, an active wheel 321, an active wheel 322, an active wheel 323, an active wheel 324, an active wheel 325, an active wheel 326, an active wheel 327, an active wheel 328, an active wheel 329, an active wheel 329, an active wheel 320, an active wheel 321, an active wheel 321, an active wheel 322, an active wheel 323, an active wheel 324, an active wheel 326, an active wheel 327, an active wheel 328, an active wheel 329 ... The movable wheel 313, the tension wheel 314 and the 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, 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 axis of the fixed wheel 312, the movable wheel 313 and the tension wheel 314 is an isosceles triangle.

[0024] Furthermore, the tension mechanism 311 also includes two cylinders 317 , and both ends of the axis of the tension wheel 314 are fixedly connected to the cylinders 317 , respectively, and the cylinders 317 are fixedly connected to the fixing frame 318 via an LB tripod.

[0025] Furthermore, the shaft of the movable wheel 313 is movably installed in the second limiting groove 320 , a compression spring 315 is provided 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 .

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

[0027] Furthermore, the first sewing head 31 and the second sewing head 32 are both provided with independent driving systems to realize their independent movement and sewing functions.

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

[0029] Furthermore, the workbench 2 is also provided with a rack 5 parallel to the X-axis guide rail 4, and a gear meshing with the rack 5 is fixedly installed inside the sewing machine head 3. The sewing machine head 3 moves left and right on the gear and rack 5 driven by the X-axis drive motor 6. The sewing machine head 3 is also 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.

[0030] Working principle:

[0031] The sewing head 3 performs X-axis motion: the gear meshing with the rack 5 is driven by the X-axis driving motor 6, 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] The sewing head 3 performs Y-axis motion: the first sewing head 31 and the second sewing head 32 are also fixedly installed with a Y-axis motor 7, and the Y-axis motor 7 drives the sewing head to move back and forth in a direction perpendicular to the X-axis, thereby realizing motion in the Y-axis direction.

[0033] Tension control of fabric: In order to ensure that the fabric maintains appropriate tension during the sewing process, in the tension mechanism 311, the fixed wheel 312, the movable wheel 313 and the tension wheel 314 are arranged in an isosceles triangle. Under the action of the cylinder 317, the tension wheel 314 is driven to move up and down. When the tension wheel 314 moves downward, the movable wheel 313 is subjected to an extrusion force, so that the compression spring 315 connected to 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 fabric can be accurately tightened or relaxed. At the same time, the tension sensor 316 can monitor the tension of the fabric and feed back to the control system to adjust the pressure of the cylinder 317, and then adjust the position of the tension wheel 314 to control the tension.

[0034] Independent / cooperative operation of the sewing head 3: The first sewing head 31 and the second sewing head 32 have independent driving systems, and can each perform different sewing tasks, or they can move and sew the same pattern synchronously. This flexibility enables the machine to adapt to a variety of different sewing needs.

[0035] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A double-head sewing machine, comprising a steel frame (1), a workbench (2) and a sewing machine head (3), characterized in that: A workbench (2) is fixedly mounted on the steel frame (1); an X-axis guide rail (4) is horizontally fixedly mounted on the surface of the workbench (2); there are two X-axis guide rails (4); 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 tension mechanisms (311) are arranged at both ends of the sewing machine heads (3); the tension mechanisms (311) are arranged in two groups, each group having two, and the tension mechanisms (311) are located on both sides of the sewing machine heads (3); the tension mechanisms (311) include 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 at one 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), and the axis of the fixed wheel (312), the movable wheel (313) and the tension wheel (314) is an isosceles triangle.

2. The double-head sewing machine according to claim 1, characterized in that: The tension mechanism (311) further comprises a cylinder (317), there are two cylinders (317), both ends of the axis of the tension wheel (314) are respectively fixedly connected to the cylinders (317), and the cylinders (317) are fixedly connected to the fixing frame (318) via an LB tripod.

3. The double-head sewing machine according to claim 1, characterized in that: The shaft of the movable wheel (313) is movably mounted in the second limiting groove (320), a compression spring (315) is provided between the shaft and the second limiting groove (320), and the shaft of the tension wheel (314) is movably mounted in the first limiting groove (319).

4. The double-head sewing machine according to claim 1, characterized in that: The tension mechanism (311) further comprises a tension sensor (316), wherein the tension sensor (316) is mounted on the piston rod of the cylinder (317).

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

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

7. The double-head sewing machine according to claim 1, characterized in that: The workbench (2) is also provided with a rack (5) parallel to the X-axis guide rail (4); a gear meshing with the rack (5) is fixedly installed inside the sewing machine head (3); the sewing machine head (3) is driven by the X-axis drive motor (6) to move the gear and the rack (5) left and right; the sewing machine head (3) is also fixedly provided with a Y-axis motor (7); the sewing machine head (3) can realize forward and backward movement in the Y-axis direction.

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