Auxiliary feeding device of serger

Abstract

The auxiliary feeding device comprises a rack and an overlocking machine body, supporting legs are fixed to the upper surface of the rack, a base is fixed to the upper ends of the supporting legs, a U-shaped plate is arranged on the base, a plurality of abutting rollers are rotationally connected to the inner wall of the U-shaped plate, a mounting block is fixed to the side wall of the overlocking machine body, and a mounting groove is formed in the upper surface of the mounting block; a mounting block is arranged on the upper surface of the U-shaped plate, an abutting assembly is mounted on the mounting block and comprises a sliding rod, a control block and a spring, the lower end of the sliding rod is fixed to the upper surface of the U-shaped plate, a limiting assembly is mounted on the control block, and when cloth needs to be subjected to overlock, a worker pulls up the control block and enables the control block to be kept in a lifting state through the limiting assembly; the cloth is placed on the base, the limiting effect of the limiting assembly on the control block is relieved, the control block drives the U-shaped plate and the abutting roller to abut against the cloth downwards under the elastic force effect of the spring, the probability that the position of the cloth deviates in the overlocking process is reduced, and the efficiency and the yield of cloth overlocking are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of overlock machines, in particular to an auxiliary feeding device of the overlock machines. Background Art

[0002] The main function of the overlock machine is to process the edges of fabrics, including cutting off excess fabric, preventing fabric damage, and making the edges of clothes smooth and neat. The overlock machine uses special sewing technology to cut off excess fabric on the edges of clothes, while preventing fabric cracking and unthreading, ensuring that the edges of clothes are smooth and neat. In addition, the overlock machine can also be used for fabric beveling and edge cutting of fabrics or knitwear.

[0003] With respect to the above-mentioned related technologies, the inventors believe that the following defects exist: the overlocking machine in the prior art uses the feed dog to press and push the fabric to move. During the movement of the fabric, the fabric is prone to deviation. Manually holding the fabric not only wastes manpower, but also easily causes the fabric to twist and wrinkle after working for a long time, thereby reducing the efficiency and yield rate of fabric overlocking. Utility Model Content

[0004] In order to solve the above problems, the utility model provides an auxiliary feeding device for an overlocking machine.

[0005] The above-mentioned technical purpose of the utility model is achieved through the following technical scheme: an auxiliary feeding device of an overlocking machine, comprising a frame and an overlocking machine body fixed to the upper surface of the frame, the upper surface of the frame is fixed with supporting legs, the upper ends of the supporting legs are fixed with a base, the base is provided with a U-shaped plate, the inner wall of the U-shaped plate is rotatably connected with a plurality of pressing rollers, a mounting block is fixed to the side wall of the overlocking machine body, the upper surface of the mounting block is provided with a mounting groove, the mounting block is provided with a pressing component for pressing the pressing roller downward, the pressing component comprises a sliding rod which is penetrated and slidably connected to the mounting block, a control block fixed to the upper end of the sliding rod, and a spring which is arranged in the mounting groove and sleeved on the sliding rod, the upper end of the spring is fixed to the bottom of the control block, the lower end of the spring is fixed to the inner bottom wall of the mounting groove, the lower end of the sliding rod is fixed to the upper surface of the U-shaped plate, and a limiting component for limiting the control block is installed on the control block.

[0006] By adopting the above technical solution, when the cloth needs to be edge-locked, the staff pulls up the control block and keeps the control block in the raised state through the limiting component, then places the cloth on the base, and then releases the limiting effect of the limiting component on the control block. The control block drives the U-shaped plate and the pressing roller to press the cloth downward under the elastic force of the spring, thereby reducing the probability of the cloth shifting during the edge-locking process and improving the efficiency and yield rate of the cloth edge-locking.

[0007] Furthermore, the limiting assembly includes a fixed block fixed to the side wall of the control block, the side wall of the fixed block is provided with a fixing groove, and the limiting assembly also includes a rotating shaft rotatably connected to the inner wall of the fixing groove and a limiting rod fixedly sleeved on the rotating shaft.

[0008] By adopting the above technical solution, when the control block needs to be limited, the staff lifts the control block, rotates and opens the limit rod to a vertical state with the control block, so that the end of the limit rod abuts against the upper surface of the mounting block, thereby limiting the control block and keeping the control block in a raised state, which is convenient for placing the cloth on the base or taking it out from the base.

[0009] Furthermore, a torsion spring sleeved on the rotating shaft is arranged in the fixing groove, one end of the torsion spring is fixed to the side wall of the limiting rod, and the other end of the torsion spring is fixed to the inner wall of the fixing groove.

[0010] By adopting the above technical solution and the setting of the torsion spring, the limit rod automatically opens under the torsion force of the torsion spring after the staff lifts the control block upwards, eliminating the tedious operation of the staff to manually open the limit rod, and facilitating the rapid limiting of the control block.

[0011] Furthermore, a rubber sheet is fixed to one end of the limiting rod away from the rotating shaft.

[0012] By adopting the above technical solution, the rubber sheet is made of rubber material, and its surface has a large friction coefficient, which increases the friction force at the end of the limit rod and reduces the probability of displacement of the limit rod on the upper surface of the mounting block.

[0013] Furthermore, the cross section of the sliding rod is rectangular.

[0014] By adopting the above technical solution, the sliding rod with a rectangular cross-section avoids the situation where the U-shaped plate and the pressing roller rotate, thereby improving the stability of the pressing roller pressing the cloth.

[0015] Furthermore, the arc-shaped surface fixing sleeve of the pressing roller is provided with a spiral convex strip, and two spiral convex strips are symmetrically arranged, and the spiral directions of the two spiral convex strips are opposite.

[0016] By adopting the above technical solution, the spiral convex strips increase the friction between the pressing roller and the cloth, and the two spiral convex strips with opposite spirals enable the cloth to automatically expand during the movement.

[0017] Furthermore, a rounded corner is provided at the intersection between the upper surface of the base and the side wall of the base.

[0018] By adopting the above technical solution, the rounded corners reduce the friction between the fabric and the base, thereby reducing the wear on the fabric.

[0019] In summary, the utility model has the following beneficial effects:

[0020] 1. In the present application, when the fabric needs to be edge-locked, the staff pulls up the control block and keeps the control block in the raised state through the limit assembly, then places the fabric on the base, and then releases the limit assembly from limiting the control block. The control block drives the U-shaped plate and the pressing roller to press the fabric downward under the elastic force of the spring, thereby reducing the probability of the fabric being offset during the edge-locking process and improving the efficiency and yield rate of fabric edge-locking.

[0021] 2. In this application, when the control block needs to be limited, the staff lifts the control block, rotates and opens the limit rod to a vertical state with the control block, so that the end of the limit rod abuts against the upper surface of the mounting block, thereby limiting the control block and keeping the control block in a raised state, which is convenient for placing the cloth on the base or taking it out from the base;

[0022] 3. In the present application, the setting of the torsion spring enables the staff to lift the control block upwards and the limit rod to open automatically under the torsion force of the torsion spring, eliminating the tedious operation of the staff to manually open the limit rod, and facilitating the rapid limiting of the control block. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the utility model;

[0024] Figure 2 It is a schematic cross-sectional structure diagram of an embodiment of the utility model;

[0025] Figure 3 It is a schematic diagram of the cross-sectional structure of an embodiment of the utility model for highlighting the limit assembly.

[0026] In the figure: 1. frame; 2. overlock machine body; 3. support leg; 4. base; 41. rounded corner; 5. U-shaped plate; 6. pressing roller; 7. mounting block; 71. mounting groove; 8. clamping assembly; 81. sliding rod; 82. control block; 83. spring; 9. limit assembly; 91. fixing block; 911. fixing groove; 92. rotating shaft; 93. limit rod; 10. torsion spring; 11. rubber sheet; 12. spiral rib. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application; obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application without making creative work are within the scope of protection of the present application.

[0028] like Figure 1-3As shown, an embodiment of the present application discloses an auxiliary feeding device of an overlocking machine, including a frame 1, an overlocking machine body 2, support legs 3, a base 4, a U-shaped plate 5, a pressing roller 6, a mounting block 7, a clamping assembly 8 and a limiting assembly 9.

[0029] The frame 1 is a structure with a U-shaped cross section, and the frame 1 is used to carry the device. The overlock machine body 2 is a common overlock machine body 2 in the prior art and applicable to the present embodiment, and the overlock machine body 2 is fixed on the upper surface of the frame 1. The support leg 3 is a vertically arranged rectangular rod-shaped structure, and the support leg 3 is fixed on the upper surface of the frame 1, and a plurality of support legs 3 are provided. The base 4 is a rectangular parallelepiped structure, and the base 4 is fixed on the upper ends of a plurality of support legs 3. The U-shaped plate 5 is a plate-shaped structure with a U-shaped cross section, and the U-shaped plate 5 is arranged on the upper surface of the U-shaped plate 5. The pressing roller 6 is a round roller-shaped structure, and the pressing roller 6 is rotatably connected to the inner wall of the U-shaped plate 5, and a plurality of pressing rollers 6 are provided. The mounting block 7 is a rectangular parallelepiped structure, and the mounting block 7 is fixed on the side wall of the overlock machine body 2, and a mounting groove 71 is provided on the upper surface of the mounting block 7.

[0030] The pressing assembly 8 is installed on the mounting block 7, and is used to press the pressing roller 6 downward. The pressing assembly 8 includes a sliding rod 81, a control block 82, and a spring 83. The sliding rod 81 is a vertically arranged rod-shaped structure. The sliding rod 81 is penetrated and slidably connected on the mounting block 7. The lower end of the sliding rod 81 is fixed to the upper surface of the U-shaped plate 5. The control block 82 is a rectangular parallelepiped structure. The control block 82 is fixed to the upper end of the sliding rod 81. The spring 83 is arranged in the mounting groove 71. The spring 83 is sleeved on the sliding rod 81. The upper end of the spring 83 is fixed to the bottom of the control block 82, and the lower end of the spring 83 is fixed to the inner bottom wall of the mounting groove 71.

[0031] The limit assembly 9 is installed on the control block 82 and is used to limit the control block 82. The limit assembly 9 includes a fixed block 91, a rotating shaft 92 and a limit rod 93. The fixed block 91 is a rectangular parallelepiped structure, and the fixed block 91 is fixed on the side wall of the control block 82. The side wall of the fixed block 91 is provided with a fixed groove 911. The rotating shaft 92 is a horizontally arranged round rod-shaped structure, and the rotating shaft 92 is rotatably connected to the inner wall of the fixing groove 911. The limit rod 93 is a rod-shaped structure, and the limit rod 93 is fixedly sleeved on the rotating shaft 92.

[0032] When it is necessary to lock the edge of the fabric, the staff pulls up the control block 82 and rotates the limit rod 93 to open the control block 82 to a vertical position, so that the end of the limit rod 93 abuts against the upper surface of the mounting block 7, thereby limiting the control block 82 and keeping the control block 82 in a raised state. The fabric is then placed on the base 4 and the limit rod 93 is rotated to a parallel state with the control block 82, thereby releasing the limiting effect of the limit assembly 9 on the control block 82. Under the elastic force of the spring 83, the control block 82 drives the U-shaped plate 5 and the pressing roller 6 to press the fabric downward, thereby reducing the probability of the fabric shifting during the overlocking process and improving the efficiency and yield rate of the fabric overlocking.

[0033] In order to avoid the tedious operation of manually opening the limit rod 93, a torsion spring 10 is arranged in the fixed groove 911 and is sleeved on the rotating shaft 92. One end of the torsion spring 10 is fixed to the side wall of the limit rod 93, and the other end of the torsion spring 10 is fixed to the inner wall of the fixed groove 911. The setting of the torsion spring 10 enables the limit rod 93 to automatically open under the torsion force of the torsion spring 10 after the staff lifts the control block 82 upwards, thereby avoiding the tedious operation of manually opening the limit rod 93 for the staff, and facilitating the rapid limiting of the control block 82.

[0034] In order to reduce the probability of displacement of the limit rod 93 on the upper surface of the mounting block 7, a rubber sheet 11 is fixed to the end of the limit rod 93 away from the rotating shaft 92. The rubber sheet 11 is made of rubber material and has a large friction coefficient on its surface, which increases the friction force at the end of the limit rod 93, thereby reducing the probability of displacement of the limit rod 93 on the upper surface of the mounting block 7.

[0035] In order to improve the stability of the pressing roller 6 pressing the cloth, the cross-section of the sliding rod 81 is rectangular. The sliding rod 81 with a rectangular cross-section avoids the rotation of the U-shaped plate 5 and the pressing roller 6, thereby improving the stability of the pressing roller 6 pressing the cloth.

[0036] In order to increase the friction between the pressure roller 6 and the cloth, the arc-shaped surface of the pressure roller 6 is fixedly sleeved with a spiral ridge 12. Two spiral ridges 12 are symmetrically arranged, and the spiral directions of the two spiral ridges 12 are opposite. The spiral ridges 12 increase the friction between the pressure roller 6 and the cloth. The two spiral ridges 12 with opposite spirals enable the cloth to automatically expand during movement.

[0037] In order to reduce the wear on the fabric, a rounded corner 41 is provided at the intersection between the upper surface of the base 4 and the side wall of the base 4. The rounded corner 41 reduces the friction between the fabric and the base 4, thereby reducing the wear on the fabric.

[0038] The use principle of the auxiliary feeding device of the overlocking machine in the present embodiment is as follows: when the cloth needs to be locked, the staff pulls up the control block 82 and rotates the limit rod 93 to open it to a vertical state with the control block 82, so that the end of the limit rod 93 abuts against the upper surface of the mounting block 7, thereby limiting the control block 82 and keeping the control block 82 in a raised state, and then places the cloth on the base 4, and then rotates the limit rod 93 to a parallel state with the control block 82, thereby releasing the limiting effect of the limit component 9 on the control block 82, and the control block 82 drives the U-shaped plate 5 and the pressing roller 6 to press the cloth downward under the elastic force of the spring 83, thereby reducing the probability of the cloth being displaced during the overlocking process and improving the efficiency and yield rate of the cloth overlocking.

[0039] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. An auxiliary feeding device for an overlocking machine, comprising a frame (1) and an overlocking machine body (2) fixed to the upper surface of the frame (1), wherein: The upper surface of the frame (1) is fixed with a support leg (3), the upper end of the support leg (3) is fixed with a base (4), a U-shaped plate (5) is arranged on the base (4), the inner wall of the U-shaped plate (5) is rotatably connected with a plurality of pressing rollers (6), a mounting block (7) is fixed on the side wall of the overlocking machine body (2), a mounting groove (71) is provided on the upper surface of the mounting block (7), a pressing assembly (8) for pressing the pressing roller (6) downward is installed on the mounting block (7), and the pressing assembly (8) includes a plurality of pressing rollers (6) arranged through the mounting block (7). The invention relates to a sliding rod (81) which is slidably connected to the block (7), a control block (82) fixed to the upper end of the sliding rod (81), and a spring (83) arranged in the mounting groove (71) and sleeved on the sliding rod (81), wherein the upper end of the spring (83) is fixed to the bottom of the control block (82), the lower end of the spring (83) is fixed to the inner bottom wall of the mounting groove (71), the lower end of the sliding rod (81) is fixed to the upper surface of the U-shaped plate (5), and a limiting component (9) for limiting the control block (82) is installed on the control block (82).

2. The auxiliary feeding device of the overlock machine according to claim 1, characterized in that: The limit assembly (9) comprises a fixed block (91) fixed to a side wall of the control block (82); a fixed groove (911) is provided on the side wall of the fixed block (91); the limit assembly (9) further comprises a rotating shaft (92) rotatably connected to an inner wall of the fixed groove (911) and a limit rod (93) fixedly sleeved on the rotating shaft (92).

3. The auxiliary feeding device of the overlock machine according to claim 2, characterized in that: A torsion spring (10) sleeved on the rotating shaft (92) is arranged in the fixing groove (911), one end of the torsion spring (10) is fixed to the side wall of the limiting rod (93), and the other end of the torsion spring (10) is fixed to the inner wall of the fixing groove (911).

4. The auxiliary feeding device of the overlock machine according to claim 3 is characterized in that: A rubber sheet (11) is fixed to one end of the limiting rod (93) away from the rotating shaft (92).

5. The auxiliary feeding device of the overlock machine according to claim 4 is characterized in that: The cross section of the sliding rod (81) is rectangular.

6. The auxiliary feeding device of the overlock machine according to claim 1, characterized in that: The arc-shaped surface fixed sleeve of the pressing roller (6) is provided with a spiral convex strip (12), two of the spiral convex strips (12) are symmetrically arranged, and the spiral directions of the two spiral convex strips (12) are opposite.

7. The auxiliary feeding device of the overlock machine according to claim 6, characterized in that: A rounded corner (41) is provided at the intersection between the upper surface of the base (4) and the side wall of the base (4).

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