A hemming sewing machine clamping device

Abstract

The utility model provides a kind of overlock sewing machine clamping device, belong to textile processing field, including device base body, the clamping mechanism for fixing cloth is provided in the side of device base body, the guide assembly for guiding cloth is provided in the side of device base body, the mounting assembly for device installation on sewing machine is provided in the side of device base body.The utility model is accurately matched by the clamping mechanism being set, when using, the limiting protruding block of fixed jaw and the limiting recess of movable jaw precision cooperation, avoid misplacement when clamping, the rubber non-slip pad and non-slip line in the inside of fixed jaw and movable jaw, can enhance the friction of fabric, adapt the clamping demand of different thickness fabric, prevent thin fabric breakage, avoid thick fabric deviation, solve the problem of traditional clamping stability deficiency.

Description

Technical Field

[0001] This utility model relates to the field of textile processing, and more specifically, to a clamping device for an overlock sewing machine. Background Technology

[0002] In the textile processing industry, including garment processing, home textile production, and fabric products, overlock sewing machines are the core equipment for preventing fabric edges from fraying and improving the appearance of finished products. Their processing efficiency and precision directly affect the overall capacity of the production line.

[0003] The market's demands for processing automation, safety, and ease of equipment maintenance are constantly increasing, but traditional overlock sewing machine clamping devices still have the following shortcomings:

[0004] Traditional clamping devices often use fixed clamping plates, lacking the ability to adapt to different fabrics. For thin fabrics, excessive clamping force can easily cause damage, while for thick fabrics, insufficient clamping force can lead to fabric shifting during processing, causing misalignment of the overlock sewing trajectory. Furthermore, the clamping plates have low precision and are prone to shifting during operation, further affecting the clamping effect. Therefore, a new clamping device for overlock sewing machines is proposed. Utility Model Content

[0005] The purpose of this invention is to address the problems of existing traditional devices that mostly use fixed clamping plates, lacking the ability to adapt to different fabrics. For thin fabrics, excessive clamping force can easily cause damage, while for thick fabrics, insufficient clamping force can cause fabric deviation during processing, leading to misalignment of the overlock sewing trajectory. Furthermore, the clamping plates have low fitting accuracy and are prone to deviation during operation, further affecting the clamping effect. This invention provides an overlock sewing machine clamping device to solve the problems mentioned in the background art.

[0006] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0007] The present invention is as follows: a clamping device for a lockstitch sewing machine, comprising a device base, a clamping mechanism for fixing fabric on one side of the device base, a guiding component for guiding fabric on one side of the device base, and an mounting component for mounting the device on a sewing machine on one side of the device base;

[0008] The clamping mechanism includes a fixed clamping piece disposed on the side wall of the device base, an electric push rod bolted to the side wall of the device base, a movable clamping piece disposed at the end of the electric push rod near the fixed clamping piece, a limiting protrusion disposed on the side wall of the fixed clamping piece, a limiting groove disposed on the side wall of the movable clamping piece, the limiting protrusion and the limiting groove being used in conjunction, and rubber anti-slip pads disposed on the opposite inner sides of the fixed clamping piece and the movable clamping piece, the surface of the rubber anti-slip pads being provided with anti-slip texture.

[0009] As a preferred technical solution of this utility model, the guiding component includes an arc-shaped guide plate bolted to the side wall of the device base, the surface of the arc-shaped guide plate is provided with a flexible buffer layer, and the two ends of the arc-shaped guide plate are provided with transition rounded corners.

[0010] As a preferred technical solution of this utility model, the installation component includes a waist-shaped hole opened on the side wall of the device base, two waist-shaped holes are arranged opposite to each other, a positioning pin hole is opened on the side wall of the device base, and four positioning pin holes are arranged at the four corners of the device base.

[0011] As a preferred technical solution of this utility model, a pressure sensor is provided on the surface of the movable clamp, a display screen is provided on the side wall of the device base, the display screen is electrically connected to the pressure sensor, and a pressure adjustment knob is provided on the side wall of the device base, the pressure adjustment knob is electrically connected to the electric push rod.

[0012] As a preferred technical solution of this utility model, a guide rod is provided between the fixed clamp and the device base, and the two guide rods are arranged opposite to each other and pass through the movable clamp.

[0013] As a preferred technical solution of this utility model, an infrared sensor is provided on the side wall of the device base, and a buzzer is provided on the side wall of the device base. The infrared sensor is electrically connected to the electric push rod and the buzzer.

[0014] As a preferred technical solution of this utility model, a plurality of weight-reducing holes are provided on the side wall of the device substrate, and the plurality of weight-reducing holes are evenly distributed.

[0015] As a preferred technical solution of this utility model, an emergency stop button is provided on the side wall of the device base, and the emergency stop button is electrically connected to the electric push rod.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. Through the clamping mechanism, the limiting protrusion of the fixed clamping piece and the limiting groove of the movable clamping piece are precisely matched during use to avoid misalignment during clamping. At the same time, the rubber anti-slip pads and anti-slip textures on the inner sides of the fixed clamping piece and the movable clamping piece can enhance the friction with the fabric, adapt to the clamping needs of fabrics of different thicknesses, prevent thin fabrics from being damaged, and prevent thick fabrics from shifting, thus solving the problem of insufficient stability of traditional clamping.

[0018] 2. With the designed guide components, the arc-shaped guide plate can achieve a smooth transition of the fabric during use, the flexible buffer layer on the surface can reduce friction damage between the fabric and the guide plate, and the rounded corners at both ends can prevent snagging of thin fabric fibers, thus solving the problem of insufficient protection of the fabric by traditional guide components. Attached Figure Description

[0019] Figure 1 A schematic diagram of the overlock sewing machine clamping device provided by this utility model;

[0020] Figure 2 A front view structural schematic diagram of the overlock sewing machine clamping device provided by this utility model;

[0021] Figure 3 The overlock sewing machine clamping device provided by this utility model Figure 2 A three-dimensional sectional view at point AA;

[0022] Figure 4 The overlock sewing machine clamping device provided by this utility model Figure 3 Enlarged view of point A in the middle;

[0023] Figure 5 This is a rear view structural diagram of the overlock sewing machine clamping device provided by this utility model.

[0024] The diagram shows: 1. Device base; 2. Clamping mechanism; 3. Guide assembly; 4. Mounting assembly; 5. Pressure sensor; 6. Display screen; 7. Pressure adjustment knob; 8. Guide rod; 9. Infrared sensor; 10. Buzzer; 11. Weight reduction hole; 12. Emergency stop button; 201. Fixing clamp; 202. Electric push rod; 203. Movable clamp; 204. Limiting protrusion; 205. Limiting groove; 206. Rubber anti-slip pad; 207. Anti-slip texture; 301. Arc-shaped guide plate; 302. Flexible buffer layer; 303. Transition rounded corner; 401. Waist-shaped hole; 402. Positioning pin hole. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model.

[0026] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0027] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] like Figure 1 As shown, this embodiment proposes a clamping device for a lockstitch sewing machine, including a device base 1, a clamping mechanism 2 for fixing fabric on one side of the device base 1, a guiding component 3 for guiding fabric on one side of the device base 1, and an installation component 4 for mounting the device on a sewing machine on one side of the device base 1.

[0030] like Figure 3 and Figure 4As shown, the clamping mechanism 2 includes a fixed clamping piece 201 disposed on the side wall of the device base 1, providing a stable clamping reference to ensure that the fabric is fixed in position during clamping and will not move arbitrarily, which is beneficial for subsequent overlock sewing operations. An electric push rod 202 is bolted to the side wall of the device base 1, which can precisely control the movement distance and force of the movable clamping piece 203 to realize automated clamping operation, improve work efficiency, and flexibly adjust the clamping force according to the characteristics and needs of different fabrics. The movable clamping piece 203 is disposed at the end of the electric push rod 202 near the fixed clamping piece 201. The movable clamping piece 203 works in conjunction with the fixed clamping piece 201 to achieve reliable clamping of the fabric. Its movement is precisely controlled by the electric push rod 202 to ensure the stability of clamping. To ensure accuracy and precision, the fixed clamping piece 201 has a limiting protrusion 204 on its side wall, and the movable clamping piece 203 has a limiting groove 205 on its side wall. The limiting protrusion 204 and the limiting groove 205 work together to prevent the movable clamping piece 203 from shifting during movement, ensuring accurate alignment between the movable clamping piece 203 and the fixed clamping piece 201, improving clamping accuracy, and avoiding damage to the fabric due to over-clamping. Rubber anti-slip pads 206 are provided on the inner sides of the fixed clamping piece 201 and the movable clamping piece 203. The surface of the rubber anti-slip pads 206 is provided with anti-slip textures 207 to increase the friction between the pads and the fabric, preventing the fabric from sliding during clamping, ensuring the fabric maintains a stable position during overlock sewing, and improving sewing quality. In use, the fixed clamping piece 201 is fixedly installed on the side wall of the device base 1, serving as a fixed support point for clamping the fabric. It cooperates with the movable clamping piece 203 to clamp the fabric. Under the push of the electric push rod 202, the movable clamping piece 203 moves towards the fixed clamping piece 201 and cooperates with the fixed clamping piece 201 to clamp the fabric. When the electric push rod 202 moves in the opposite direction, the movable clamping piece 203 moves away from the fixed clamping piece 201, releasing the fabric. The limiting protrusion 204 is provided on the side wall of the fixed clamping piece 201, and the limiting groove 205 is provided on the side wall of the movable clamping piece 203. When the movable clamping piece 203 moves towards the fixed clamping piece 201 to clamp the fabric, the limiting protrusion 204 is embedded in the limiting groove 205, which plays the role of positioning and limiting the movement range of the movable clamping piece 203. The rubber anti-slip pad 206 contacts the fabric surface, and the anti-slip texture 207 further increases the friction between the pad and the fabric.

[0031] like Figure 3As shown, the guide assembly 3 includes an arc-shaped guide plate 301 bolted to the side wall of the device base 1. A flexible buffer layer 302 is provided on the surface of the arc-shaped guide plate 301, and transition rounded corners 303 are provided at both ends of the arc-shaped guide plate 301. The arc-shaped guide plate 301 guides the fabric accurately into the clamping mechanism 2, preventing wrinkles or twisting of the fabric during entry and ensuring that the fabric enters the clamping area smoothly, which is beneficial for subsequent overlock sewing operations. The flexible buffer layer 302 and the transition rounded corners 303 can reduce damage to the fabric. In use, the arc-shaped guide plate 301 is fixed to the side wall of the device base 1. Before entering the clamping mechanism 2, the fabric slides along the surface of the arc-shaped guide plate 301. The flexible buffer layer 302 can reduce friction and collision between the fabric and the arc-shaped guide plate 301, and the transition rounded corners 303 allow the fabric to smoothly transition onto the arc-shaped guide plate 301.

[0032] like Figure 5 As shown, the mounting component 4 includes two oblong holes 401 on the side wall of the device base 1, with the two oblong holes 401 facing each other. Positioning pin holes 402 are provided on the side wall of the device base 1, with four positioning pin holes 402 located at the four corners of the device base 1. In use, the device is installed on a sewing machine by passing bolts or other connecting parts through the oblong holes 401. The design of the oblong holes 401 allows for some adjustment space during installation. The four positioning pin holes 402, located at the four corners of the device base 1, are inserted into corresponding holes on the sewing machine during installation, serving to position and fix the device, ensuring accurate installation on the sewing machine, preventing displacement during operation, and improving the stability and reliability of the device.

[0033] like Figure 1 As shown, a pressure sensor 5 is installed on the surface of the movable clamping piece 203, and a display screen 6 is installed on the side wall of the device base 1. The display screen 6 is electrically connected to the pressure sensor 5. A pressure adjustment knob 7 is installed on the side wall of the device base 1 and is electrically connected to the electric push rod 202. In use, the pressure sensor 5, installed on the surface of the movable clamping piece 203, can detect the pressure applied by the movable clamping piece 203 to the fabric in real time and convert the pressure signal into an electrical signal, which is then transmitted to the display screen 6 for display. The pressure adjustment knob 7 is electrically connected to the electric push rod 202. By rotating the pressure adjustment knob 7, the thrust of the electric push rod 202 can be adjusted, thereby changing the clamping pressure of the movable clamping piece 203 on the fabric.

[0034] like Figure 1As shown, a guide rod 8 is provided between the fixed clamp 201 and the device base 1. The two guide rods 8 are arranged opposite to each other and pass through the movable clamp 203. In use, the two guide rods 8 are arranged opposite to each other between the fixed clamp 201 and the device base 1 and pass through the movable clamp 203. When the movable clamp 203 moves under the push of the electric push rod 202, the guide rods 8 play a guiding role to ensure that the movable clamp 203 moves along a straight line.

[0035] like Figure 1 As shown, an infrared sensor 9 and a buzzer 10 are installed on the side wall of the device base 1. The infrared sensor 9 is electrically connected to the electric push rod 202 and the buzzer 10. In use, the infrared sensor 9, installed on the side wall of the device base 1, can detect whether there are obstacles or objects such as people around the device. When the infrared sensor 9 detects an abnormality, it transmits a signal to the electric push rod 202 and the buzzer 10. The electric push rod 202 stops moving, and the buzzer 10 sounds an alarm.

[0036] like Figure 5 As shown, a plurality of weight-reducing holes 11 are formed on the side wall of the device base 1, and the plurality of weight-reducing holes 11 are evenly distributed. In use, the weight-reducing holes 11 reduce the overall weight of the device by reducing the amount of material used in the device base 1.

[0037] like Figure 1 As shown, an emergency stop button 12 is installed on the side wall of the device base 1, and the emergency stop button 12 is electrically connected to the electric push rod 202. In case of emergencies or urgent dangers, the operator can quickly press the emergency stop button 12 to immediately stop the device from operating, prevent the accident from escalating further, and ensure the safety of the operator and the equipment.

[0038] Specifically, in use, the clamping device of this overlock sewing machine is as follows: The fixed clamping piece 201 is fixedly installed on the side wall of the device base 1, serving as a fixed support point for clamping the fabric. It cooperates with the movable clamping piece 203 to clamp the fabric. Under the push of the electric push rod 202, the movable clamping piece 203 moves towards the fixed clamping piece 201, cooperating with the fixed clamping piece 201 to clamp the fabric. When the electric push rod 202 moves in the opposite direction, the movable clamping piece 203 moves away from the fixed clamping piece 201, releasing the fabric. A limiting protrusion 204 is provided on the side wall of the fixed clamping piece 201, and a limiting groove 205 is provided on the side wall of the movable clamping piece 203. When the movable clamping piece 203 moves towards the fixed clamping piece 201 to clamp the fabric, the limiting protrusion 204 embeds into the limiting groove 205, serving to position and limit the movement range of the movable clamping piece 203. The rubber anti-slip pad 206 contacts the fabric surface, and the anti-slip texture 207 further increases the friction between the pad and the fabric (e.g., ...). Figure 3 and Figure 4As shown), the arc-shaped guide plate 301 is fixed to the side wall of the device base 1. Before the fabric enters the clamping mechanism 2, it slides along the surface of the arc-shaped guide plate 301. The flexible buffer layer 302 can reduce the friction and collision between the fabric and the arc-shaped guide plate 301, and the transition rounded corner 303 allows the fabric to smoothly transition onto the arc-shaped guide plate 301 (as shown). Figure 3 As shown), the device is installed on the sewing machine by connecting parts such as bolts passing through the waist-shaped hole 401. The design of the waist-shaped hole 401 allows for some adjustment space during installation. Four positioning pin holes 402 are located at the four corners of the device base 1. During installation, the positioning pin holes 402 are inserted into the corresponding holes on the sewing machine to position and fix the device, ensuring accurate installation and preventing displacement during operation, thus improving the stability and reliability of the device (e.g., ...). Figure 5 As shown), pressure sensor 5 is installed on the surface of movable clamp 203, which can detect the pressure applied by movable clamp 203 to the fabric in real time and convert the pressure signal into an electrical signal and transmit it to display screen 6 for display. Pressure adjustment knob 7 is electrically connected to electric push rod 202. By rotating pressure adjustment knob 7, the pushing force of electric push rod 202 can be adjusted, thereby changing the clamping pressure of movable clamp 203 on the fabric (e.g., ...). Figure 1 As shown), two guide rods 8 are positioned opposite each other between the fixed clamp 201 and the device base 1, and pass through the movable clamp 203. When the movable clamp 203 moves under the push of the electric push rod 202, the guide rods 8 play a guiding role, ensuring that the movable clamp 203 moves along a straight line (as shown). Figure 1 As shown), the infrared sensor 9 is installed on the side wall of the device base 1 and can detect whether there are obstacles or human objects around the device. When the infrared sensor 9 detects an abnormality, it transmits a signal to the electric push rod 202 and the buzzer 10. The electric push rod 202 stops moving, and the buzzer 10 sounds an alarm (e.g., ...). Figure 1 (As shown).

[0039] All technical features in this embodiment can be freely combined according to actual needs.

[0040] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A clamping device for an overlock sewing machine, comprising a device base (1), characterized in that, The device base (1) is provided with a clamping mechanism (2) for fixing the fabric on one side, a guiding component (3) for guiding the fabric on one side, and an installation component (4) for mounting the device on a sewing machine on one side. The clamping mechanism (2) includes a fixed clamping piece (201) disposed on the side wall of the device base (1). An electric push rod (202) is bolted to the side wall of the device base (1). A movable clamping piece (203) is disposed at one end of the electric push rod (202) near the fixed clamping piece (201). A limiting protrusion (204) is disposed on the side wall of the fixed clamping piece (201). A limiting groove (205) is disposed on the side wall of the movable clamping piece (203). The limiting protrusion (204) and the limiting groove (205) are used in conjunction. A rubber anti-slip pad (206) is disposed on the inner side of the fixed clamping piece (201) and the movable clamping piece (203). The surface of the rubber anti-slip pad (206) is provided with anti-slip texture (207).

2. The overlock sewing machine clamping device according to claim 1, characterized in that, The guiding component (3) includes an arc-shaped guide plate (301) bolted to the side wall of the device base (1). The surface of the arc-shaped guide plate (301) is provided with a flexible buffer layer (302), and the two ends of the arc-shaped guide plate (301) are provided with transition fillets (303).

3. The overlock sewing machine clamping device according to claim 1, characterized in that, The mounting component (4) includes a waist-shaped hole (401) on the side wall of the device base (1), two waist-shaped holes (401) are arranged opposite to each other, and a positioning pin hole (402) is provided on the side wall of the device base (1), and four positioning pin holes (402) are provided at the four corners of the device base (1).

4. The overlock sewing machine clamping device according to claim 1, characterized in that, A pressure sensor (5) is provided on the surface of the movable clamp (203), and a display screen (6) is provided on the side wall of the device base (1). The display screen (6) is electrically connected to the pressure sensor (5). A pressure adjustment knob (7) is provided on the side wall of the device base (1). The pressure adjustment knob (7) is electrically connected to the electric push rod (202).

5. The overlock sewing machine clamping device according to claim 1, characterized in that, A guide rod (8) is provided between the fixed clamp (201) and the device base (1). The two guide rods (8) are arranged opposite to each other and pass through the movable clamp (203).

6. The overlock sewing machine clamping device according to claim 1, characterized in that, An infrared sensor (9) is provided on the side wall of the device base (1), and a buzzer (10) is provided on the side wall of the device base (1). The infrared sensor (9) is electrically connected to the electric push rod (202) and the buzzer (10).

7. The overlock sewing machine clamping device according to claim 1, characterized in that, The device substrate (1) has several weight-reducing holes (11) on its side wall, and the several weight-reducing holes (11) are evenly distributed.

8. The overlock sewing machine clamping device according to claim 1, characterized in that, An emergency stop button (12) is provided on the side wall of the device base (1), and the emergency stop button (12) is electrically connected to the electric push rod (202).

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