Sewing machine capable of positioning and clamping cloth

Abstract

The utility model relates to the technical field of sewing machines, in particular to a sewing machine capable of positioning and clamping cloth. The sewing machine comprises a sewing machine body, a workbench, a clamping transmission device and a fixing device, the fixing device comprises a first fixing roller, a second fixing roller and an elastic assembly, rubber pads are fixedly connected to the surfaces of the first fixing roller and the second fixing roller, and the elastic assembly is fixedly connected with the workbench and rotationally connected with the first fixing roller. The elastic assembly is provided with a groove for containing a movable block and a tension spring, the movable block is in sliding connection with the assembly shell, the movable block is fixedly connected with the tension spring, the movable block is rotationally connected with the second fixed roller, and the tension spring is fixedly connected with the assembly shell. According to the utility model, the first fixing roller and the second fixing roller are matched to stabilize the cloth, the tension spring in the elastic assembly is utilized to adjust the tension to adapt to the thickness and hardness of different cloth, and meanwhile, the rubber pads on the surfaces of the fixing rollers protect the cloth from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine technical field, concretely relates to a sewing machine that can position and clamp cloth. BACKGROUND

[0002] In the sewing technical field, especially for the automatic and semi-automatic sewing equipment, it is an important technical requirement to accurately and stably clamp and position the cloth. Traditional manual sewing needs manual fixing of the cloth, while modern industrial production tends to use mechanized or automated ways to improve efficiency and accuracy.

[0003] In the process of sewing long cloth, part of the cloth is suspended outside the workbench due to the excessive length of the cloth, which is easily affected by gravity and droops, thereby affecting the accuracy of sewing. This problem is a common challenge in existing sewing technology, especially in the case of handling large-area or long-strip cloth. SUMMARY

[0004] The utility model aims at providing a sewing machine that can position and clamp cloth to solve the problem of the influence of the excessive length of the cloth on the accuracy of sewing.

[0005] To achieve the above-mentioned purpose, a sewing machine that can position and clamp cloth is provided, which comprises a sewing machine body, a workbench, a clamping transmission device and a fixing device. The sewing machine body is arranged on the workbench and fixedly connected thereto. The clamping transmission device is arranged below the sewing machine body and fixedly connected to the workbench. The fixing device is arranged in front of the sewing machine body and fixedly connected to the workbench.

[0006] As a further improvement of the technical solution, the fixing device comprises a first fixed roller, a second fixed roller and an elastic assembly. Rubber pads are fixedly connected to the surfaces of the first fixed roller and the second fixed roller. The elastic assembly is fixedly connected to the workbench.

[0007] As a further improvement of the technical solution, the elastic assembly is rotatably connected to the first fixed roller. The elastic assembly is provided with a slot for accommodating a movable block and a tension spring. The movable block is slidably connected to the assembly housing. The movable block is fixedly connected to the tension spring. The movable block is rotatably connected to the second fixed roller. The tension spring is fixedly connected to the assembly housing.

[0008] As a further improvement of the technical solution, the clamping transmission device is provided with a frame fixedly connected to the workbench. The frame is provided with a slot for accommodating a lead screw and a sliding block. The lead screw is rotatably connected to the frame. The driving end of the lead screw is an electric motor. The sliding block is slidably connected to the frame. The lead screw is rotatably connected to the sliding block. The sliding block is fixedly connected to a clamping device.

[0009] As a further improvement of the technical solution, the clamping device is provided with a connecting block, a groove accommodating a positioning block is formed in front of the connecting block, the positioning block is in sliding connection with the connecting block, a backing plate is fixedly connected to one side of the connecting block, a clamping plate is arranged above the backing plate and in rotary connection with the connecting block, a gas cylinder is arranged above the connecting block and in rotary connection with the base thereof, and a piston rod of the gas cylinder is in rotary connection with the clamping plate.

[0010] Compared with the prior art, the sewing machine has the advantages that:

[0011] 1. In the sewing machine capable of positioning and clamping cloth, the first fixed roller and the second fixed roller are arranged, and the tension of the tension spring in the elastic assembly is adjusted, so that cloth with different thicknesses and hardnesses can be stably clamped, displacement or deformation of the cloth during sewing is avoided, and sewing precision is improved.

[0012] Secondly, the rubber pad covering the surface of the fixed roller can increase the friction between the fixed roller and the cloth, and can also protect the surface of the cloth from being damaged, and is suitable for cloth with various materials.

[0013] 2. In the sewing machine capable of positioning and clamping cloth, the clamping device is driven by the gas cylinder to act on the clamping plate, so that the cloth can be clamped quickly and powerfully, and the positioning block can ensure the clamping position of the cloth in the transverse direction, so that the flexibility and applicability of operation are improved. Meanwhile, the transmission device adopts a combination of a lead screw and a sliding block, so that the accurate and uniform movement of the cloth can be realized by accurately controlling the movement of the sliding block, and the automation degree of the sewing machine is further improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a schematic diagram of the structure of the clamping transmission device of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the clamping device of the utility model;

[0017] Figure 4 It is a schematic diagram of the structure of the fixing device of the utility model;

[0018] Figure 5 It is a sectional view of the elastic assembly of the utility model.

[0019] The meanings of the respective reference numerals in the drawings are as follows:

[0020] 1, sewing machine body; 2, workbench; 3, clamping transmission device; 31, frame; 32, motor; 33, screw rod; 34, sliding block; 35, clamping device; 351, connecting block; 352, positioning block; 353, backing plate; 354, clamping plate; 355, air cylinder; 4, fixing device; 41, first fixing roller; 42, second fixing roller; 43, elastic assembly; 431, assembly shell; 432, movable block; 433, tension spring; 44, rubber pad. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0022] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like is the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0023] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0024] Please refer to Figures 1-5 The embodiment is aimed at providing a sewing machine capable of positioning and clamping cloth, which comprises a sewing machine body 1 arranged on a workbench 2 and fixedly connected thereto. A clamping transmission device 3 is arranged below the sewing machine body 1, and the device is also fixedly connected to the workbench 2. A fixing device 4 is further arranged in front of the sewing machine body 1, and the device is also fixedly connected to the workbench 2.

[0025] The fixing device 4 comprises a first fixing roller 41, a second fixing roller 42 and an elastic assembly 43. The surfaces of the first fixing roller 41 and the second fixing roller 42 are fixedly connected with rubber pads 44, which can not only increase the friction with the cloth, but also effectively protect the surface of the cloth from being damaged. The elastic assembly 43 is fixedly connected with the workbench 2 and rotatably connected with the first fixing roller 41, and contains a groove accommodating a movable block 432 and a tension spring 433. The movable block 432 is slidably connected with an assembly shell 431 and fixedly connected with the tension spring 433, so that the movable block 432 is rotatably connected with the second fixing roller 42, and the tension spring 433 is fixedly connected with the assembly shell 431. This design can stabilize the cloth of different thickness and hardness by using the first fixing roller 41 and the second fixing roller 42 in cooperation and adjusting the tension of the tension spring 433 in the elastic assembly 43, so as to ensure that the cloth does not displace or deform during sewing, and improve the sewing precision.

[0026] The clamping transmission device 3 is provided with a frame 31 fixedly connected with the workbench 2, and the frame 31 has a space accommodating a lead screw 33 and a sliding block 34. The lead screw 33 is rotatably connected with the frame 31 and driven by a motor 32 at one end. The sliding block 34 is slidably connected with the frame 31 and rotatably connected with the lead screw 33, and the sliding block 34 is fixedly connected with a clamping device 35. This design can realize the accurate and uniform movement of the cloth by accurately controlling the movement of the sliding block 34, and further enhances the automation degree of the sewing machine.

[0027] The clamping device 35 is provided with a connecting block 351 having a groove accommodating a positioning block 352 in front of the connecting block 351, and the positioning block 352 is slidably connected with the connecting block 351. The connecting block 351 is fixedly connected with a backing plate 353 on one side, and the backing plate 353 is provided with a clamping plate 354 rotatably connected with the connecting block 351 above. The connecting block 351 is further provided with an air cylinder 355, the base of the air cylinder 355 is rotatably connected with the connecting block 351, and the piston rod of the air cylinder 355 is rotatably connected with the clamping plate 354. This design can quickly and powerfully clamp the cloth by driving the clamping plate 354 to act through the air cylinder 355, and the positioning block 352 can ensure the clamping position of the cloth in the transverse direction, improving the flexibility and applicability of the operation.

[0028] In summary, the sewing machine with positionable clamping cloth can not only stabilize the cloth of different thickness and hardness, ensure that the cloth does not displace or deform during sewing, and improve the sewing precision, but also can quickly and powerfully clamp the cloth by driving the clamping plate 354 to act through the air cylinder 355, and the positioning block 352 can ensure the clamping position of the cloth in the transverse direction, improving the flexibility and applicability of the operation. The transmission device adopts the combination of the lead screw 33 and the sliding block 34, which can realize the accurate and uniform movement of the cloth by accurately controlling the movement of the sliding block 34, and further enhances the automation degree of the sewing machine.

[0029] Working principle:

[0030] The operator first places the fabric to be sewn between the first fixed roller 41 and the second fixed roller 42, and the rubber pad 44 on the surface of the first fixed roller 41 and the second fixed roller 42 increases the friction with the fabric, protecting the surface of the fabric from damage. Subsequently, the tension of the tension spring 433 in the elastic assembly 43 will be automatically adjusted according to the thickness and hardness of the fabric, ensuring that the fabric is properly and uniformly clamped. Then, the operator pulls out the positioning block 352, aligns the fabric with the positioning block 352, ensures the accuracy of the lateral position of the fabric, and then starts the air cylinder 355 to drive the clamping plate 354 to act, quickly and powerfully clamping the fabric. After clamping is completed, the positioning block 352 is retracted. During sewing, the operator starts the clamping transmission device 3, the motor 32 drives the screw 33 to rotate, driving the sliding block 34 to move smoothly along the frame 31, and then driving the clamping device 35 installed on the sliding block 34 to move synchronously, realizing the precise positioning and uniform speed of the fabric. In this way, the operator can easily complete the positioning and clamping of the fabric, ensuring that the fabric is stable during sewing, improving the sewing precision and production efficiency.

[0031] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only preferred examples of the present application and do not limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the claimed present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A sewing machine capable of positioning and clamping cloth, characterized by: Including sewing machine body (1), workbench (2), clamping transmission (3) and fixing device (4), the sewing machine body (1) is arranged on the workbench (2) and is fixedly connected with it, the sewing machine body (1) below is provided with clamping transmission (3), the clamping transmission (3) is fixedly connected with the workbench (2), the sewing machine body (1) front is provided with fixing device (4), the fixing device (4) is fixedly connected with the workbench (2); The clamping transmission (3) is provided with frame (31) and workbench (2) fixed connection, the frame (31) is internally provided with the slot of accommodating lead screw (33) and sliding block (34), the lead screw (33) is rotatably connected with the frame (31), the drive end of the lead screw (33) is motor (32), the sliding block (34) is slidably connected with the frame (31), the lead screw (33) is rotatably connected with the sliding block (34), the sliding block (34) is fixedly connected with clamping device (35) on it; The clamping device (35) is provided with connecting block (351), the connecting block (351) front is provided with the slot of accommodating positioning block (352), the positioning block (352) is slidably connected with the connecting block (351), the connecting block (351) one side is fixedly connected with the backing plate (353), the backing plate (353) top is provided with clamping plate (354) and is rotatably connected with the connecting block (351), the connecting block (351) top is provided with air cylinder (355) and is rotatably connected with its base, the piston rod of the air cylinder (355) is rotatably connected with the clamping plate (354).

2. The positionable fabric clamping sewing machine of claim 1, wherein: The fixing device (4) includes first fixed roller (41), second fixed roller (42) and elastic component (43), the first fixed roller (41) and second fixed roller (42) surface fixedly connected with rubber pad (44), the elastic component (43) is fixedly connected with the workbench (2).

3. The positionable fabric clamping sewing machine of claim 2, wherein: The elastic component (43) is rotatably connected with the first fixed roller (41), the elastic component (43) is provided with the slot of accommodating movable block (432) and tension spring (433), the movable block (432) is slidably connected with component housing (431), the movable block (432) is fixedly connected with the tension spring (433), the movable block (432) is rotatably connected with the second fixed roller (42), the tension spring (433) is fixedly connected with the component housing (431).

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