Cloth feeding mechanism of overlock machine for law enforcement uniform production

Abstract

The utility model discloses a cloth feeding mechanism of an overedger for producing law enforcement uniform, which comprises a mounting plate, and two driving rollers and two driven rollers are arranged on the mounting plate. The two driving rollers are arranged between each other and clamp a piece of strip-shaped cloth. Meanwhile, the two driven rollers are arranged in front of the feeding process of the driving roller. Besides, a transmission shaft of each driven roller is connected with a damping box, and by arranging the two driving rollers and the two driven rollers, it can be ensured that the strip-shaped cloth is kept flat in the cloth feeding process, and the problems of wrinkles and uneven stretching are solved; a transmission shaft of the driven roller is connected with a damping box, the feeding speed and force of cloth can be effectively controlled, and cloth damage caused by too high speed or too large force is avoided. The anti-skid layer is arranged on the roller surface of the lower pressing roller, friction force between the lower pressing roller and the cloth can be increased, and stability and accuracy of the cloth on the cloth conveying belt are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of garment production technology, specifically to a fabric feeding mechanism for an overlock sewing machine used in the production of law enforcement uniforms. Background Technology

[0002] In the production of law enforcement uniforms, traditional overlock sewing machines have several problems and limitations in their fabric feeding mechanisms. For example, traditional feeding mechanisms may fail to effectively maintain the flatness of striped fabric during the sewing process, leading to wrinkles or uneven stretching, which directly affects sewing quality. Furthermore, due to the lack of proper control over fabric feed speed and force, the fabric may be damaged during transport, especially at excessive speeds or with excessive force. Additionally, traditional pressure rollers may lack sufficient friction to stabilize the fabric, causing it to slip on the conveyor belt and affecting sewing accuracy.

[0003] Existing fabric feeding mechanisms may have structural shortcomings, such as fabric jamming during transmission or uneven tension, which can reduce production efficiency and the quality of law enforcement uniforms. Therefore, a new fabric feeding mechanism is needed to address these issues and improve the production efficiency and quality of law enforcement uniforms. Utility Model Content

[0004] The purpose of this invention is to provide a fabric feeding mechanism for an overlock sewing machine used in the production of law enforcement uniforms, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fabric feeding mechanism for an overlock sewing machine used in the production of law enforcement uniforms, comprising a mounting plate on which two driving rollers and two driven rollers are mounted. The driving rollers are driven by a drive motor, and the two driving rollers are positioned between each other, clamping a strip of fabric. Simultaneously, the two driven rollers are positioned before the feeding process of the driving rollers. Furthermore, a damping box is connected to the drive shaft of each driven roller to ensure the stability of the fabric during transport.

[0006] The front end of the strip of fabric is placed on a fabric conveyor belt, above which a pressure roller is installed. The roller surface of the pressure roller is covered with an anti-slip layer to ensure that the fabric does not slip during conveying. The strip of fabric is sandwiched between the anti-slip layer and the fabric conveyor belt to ensure that it remains flat during conveying.

[0007] More specifically, a seated bearing is mounted on the lower side wall of the mounting plate. A rotating shaft is inserted into the seated bearing, and an arc-shaped rotating rod is fixed on the rotating shaft. The tail end of the arc-shaped rotating rod is connected to a stretching roller, which is located between the feeding process of the driving roller and the driven roller. The stretching roller is responsible for stretching the strip of fabric to ensure its flatness during the sewing process.

[0008] Furthermore, a connecting rod is connected to the head end of the bow-shaped rotating rod, and a connecting block is fixed to the head end of the connecting rod. A tension spring is mounted on the connecting block, and the upper end of the tension spring is fixed to the mounting plate to provide the necessary tension and ensure uniform tension of the fabric during the conveying process.

[0009] Structurally, the heights of the drive roller and driven roller are designed to be equal, while the height of the drive roller is greater than that of the tension roller. The height of the seated bearing is located between the drive roller and the driven roller to ensure the coordination and stability of the entire fabric feeding mechanism during operation.

[0010] Compared with the prior art, the beneficial effects of this utility model are: by setting two active rollers and two driven rollers, it can ensure that the strip fabric remains flat during the feeding process, reducing the problems of wrinkles and uneven stretching; the drive shaft of the driven roller is connected to a damping box, which can effectively control the feeding speed and force of the fabric, avoiding damage to the fabric due to excessive speed or force.

[0011] The roller surface of the lower pressure roller is equipped with an anti-slip layer, which can increase the friction between the roller and the fabric, ensuring the stability and accuracy of the fabric on the feeding conveyor belt; the design of the bow-shaped rotating rod and tension spring can moderately stretch the strip of fabric, ensuring the flatness and tension of the fabric before sewing, and improving the sewing quality.

[0012] The reasonable height settings of the drive roller, driven roller, and tension roller ensure smooth passage of the fabric in the feeding mechanism, reducing the risk of jamming and fabric damage. The overall design of the feeding mechanism is compact, saving space while improving production efficiency and the production quality of law enforcement uniforms. Attached Figure Description

[0013] Figure 1 This is a front view schematic diagram of the present invention;

[0014] Figure 2 This is a side view of the present invention;

[0015] Figure 3 This is a top view of the present invention without the lower pressure roller.

[0016] In the diagram: 1. Mounting plate; 2. Driven roller; 3. Driven roller; 4. Strip fabric; 5. Damping box; 6. Fabric feeding conveyor belt; 7. Lower pressure roller; 8. Anti-slip layer; 9. Bearing with seat; 10. Rotating shaft; 11. Bow-shaped rotating rod; 12. Tension roller; 13. Connecting block; 14. Tension spring. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-2 This utility model provides a technical solution: a fabric feeding mechanism for an overlock sewing machine used in the production of law enforcement uniforms, comprising a mounting plate 1. Two driving rollers 2 and two driven rollers 3 are mounted on this mounting plate 1. The driving rollers 2 are driven by a drive motor, and the two driving rollers 2 are positioned between each other, clamping a strip of fabric 4. Meanwhile, the two driven rollers 3 are positioned before the feeding process of the driving rollers 2. Furthermore, a damping box 5 is connected to the drive shaft of each driven roller 3 to ensure the stability of the fabric during the conveying process.

[0019] The front end of the strip of fabric 4 is placed on the fabric conveyor belt 6, and a pressure roller 7 is installed above the fabric conveyor belt 6. The roller surface of the pressure roller 7 is covered with an anti-slip layer 8 to ensure that the fabric does not slip during the conveying process. The strip of fabric 4 is sandwiched between the anti-slip layer 8 and the fabric conveyor belt 6 to ensure that it remains flat during the conveying process.

[0020] More specifically, a seated bearing 9 is mounted on the lower side of the side wall of the mounting plate 1. A rotating shaft 10 is inserted into the seated bearing 9, and an arc-shaped rotating rod 11 is fixed on the rotating shaft 10. The tail end of the arc-shaped rotating rod 11 is connected to a stretching roller 12, which is located between the feeding process of the driving roller 2 and the driven roller 3. The stretching roller 12 is responsible for stretching the strip of fabric 4 to ensure its flatness during the sewing process.

[0021] Furthermore, a connecting rod is connected to the head end of the bow-shaped rotating rod 11, and a connecting block 13 is fixed to the head end of the connecting rod. A tension spring 14 is mounted on the connecting block 13, and the upper end of the tension spring 14 is fixed to the mounting plate 1 to provide the necessary tension and ensure that the tension of the fabric is uniform during the conveying process.

[0022] Structurally, the heights of the driving roller 2 and the driven roller 3 are designed to be equal, while the height of the driving roller 2 is greater than the height of the stretching roller 12. The height of the seated bearing 9 is located between the driving roller 2 and the driven roller 3 to ensure the coordination and stability of the entire fabric feeding mechanism during operation.

[0023] Working principle: When this utility model is working, 1. the strip of fabric 4 is placed between two active rollers 2, ready for the feeding process; the active rollers 2 are driven to rotate by a motor or other power source, thereby driving the strip of fabric 4 to move forward.

[0024] Before the driving roller 2, there are two driven rollers 3, whose drive shafts are connected to damping boxes 5. The function of the damping boxes 5 is to provide a certain resistance to control the feeding speed and tension of the fabric, so as to ensure that the fabric moves smoothly and evenly during the feeding process.

[0025] The front end of the strip fabric 4 is placed on the fabric feeding conveyor belt 6, which is responsible for conveying the fabric forward. A lower pressure roller 7 is provided above the fabric feeding conveyor belt 6. The roller surface of the lower pressure roller 7 has an anti-slip layer 8 to ensure that the fabric will not slip during the conveying process.

[0026] The bow-shaped rotating rod 11 is connected to the mounting plate 1 via a seated bearing 9 and a rotating shaft 10, and its tail end is connected to a stretching roller 12. The stretching roller 12 is located between the driving roller 2 and the driven roller 3 and is used to stretch the strip of fabric 4 to ensure the flatness and tension of the fabric before sewing.

[0027] The bow-shaped rotating rod 11 is connected to a connecting rod at one end, and a connecting block 13 is connected to the other end of the connecting rod. A tension spring 14 is fixed on the connecting block 13. The other end of the tension spring 14 is fixed to the mounting plate 1. Its function is to provide a certain tension to the bow-shaped rotating rod 11 to ensure that the tension roller 12 applies appropriate tension to the fabric.

[0028] The heights of the drive roller 2 and the driven roller 3 are equal, but the height of the drive roller 2 is greater than the height of the stretch roller 12. The height of the seated bearing 9 is located between the drive roller 2 and the driven roller 3, which helps to ensure the smoothness of the fabric as it passes through each roller.

[0029] In summary, the fabric feeding mechanism, through the cooperation of the driving roller 2 and the driven roller 3, and the stretching action of the stretching roller 12, combined with the resistance control of the damping box 5, achieves stable conveying and appropriate stretching of the strip fabric 4, so as to meet the requirements for fabric flatness and tension in the production of law enforcement uniforms.

[0030] In the description of this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0031] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0032] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A feed mechanism for an overlock machine for the production of law enforcement uniforms, characterized in that: Including the installation plate (1), be equipped with driving roller (2) and driven roller (3) on the installation plate (1), the number of driving roller (2) is 2, and the strip cloth (4) is clamped between 2 driving roller (2); The number of driven roller (3) is 2, and it is located before the feeding process of driving roller (2), driving roller (2) is driven by driving motor, and the transmission shaft of driven roller (3) is connected with damping box (5), and the inlet end of strip cloth (4) is arranged on cloth conveying belt (6); The lower side of the side wall of installation plate (1) is provided with a bearing (9), the shaft (10) is inserted in the bearing (9), the arc-shaped rotating lever (11) is arranged on the shaft (10), the tail end of the arc-shaped rotating lever (11) is provided with a stretching roller (12), the stretching roller (12) is arranged between the driving roller (2) and the driven roller (3), and the strip cloth (4) is stretched.

2. The feed mechanism for overlock machine for law enforcement uniform production according to claim 1, characterized in that: The head end of the arc-shaped rotating lever (11) is provided with a connecting rod, the head end of the connecting rod is provided with a connecting block (13), the stretching spring (14) is arranged on the connecting block (13), and the upper end of the stretching spring (14) is fixedly arranged on the installation plate (1).

3. The feed mechanism for overlock machine for law enforcement uniform production according to claim 2, characterized in that: The height of the driving roller (2) and the driven roller (3) is equal, the height of the driving roller (2) is greater than the height of the stretching roller (12), and the height of the bearing (9) is between the driving roller (2) and the driven roller (3).

4. The feed mechanism for overlock machine for law enforcement uniform production according to claim 2, characterized in that: The head end of the arc-shaped rotating lever (11) is provided with a connecting rod, the head end of the connecting rod is provided with a connecting block (13), the stretching spring (14) is arranged on the connecting block (13), and the upper end of the stretching spring (14) is fixedly arranged on the installation plate (1). The height of the driving roller (2) and the driven roller (3) is equal, the height of the driving roller (2) is greater than the height of the stretching roller (12), and the height of the bearing (9) is between the driving roller (2) and the driven roller (3).

Images