Feeding mechanism of trimming overlock machine

Abstract

The utility model discloses a feeding mechanism of a decorative edge overlock machine. The feeding mechanism comprises a transverse shell and a feeding pressing plate. Feeding rollers are rotationally connected between the front inner wall and the rear inner wall of the transverse shell, the two feeding rollers are in transmission connection through a feeding belt, a belt body at the upper end of the feeding belt is located in a receding hole in the upper surface of the transverse shell, vertical shells are arranged at the left end and the right end of the transverse shell, and rotating discs are rotationally connected to the inner walls of the rear sides of the vertical shells through first rotating shafts; the feeding pressing plates are rotationally connected to the eccentric ends of the front surfaces of the rotating discs through second rotating shafts correspondingly, limiting frames are vertically and slidably connected to the outer side faces of the feeding pressing plates correspondingly, limiting sliding columns are arranged on the left side face and the right side face of each limiting frame correspondingly, and the limiting sliding columns are transversely and slidably connected with sliding holes in the surface of the vertical shell. The elastic element is used for providing power for feeding of cloth, the feeding strength of the trimming overlock machine can be conveniently controlled according to different sizes and materials of the cloth, feeding of the feeding mechanism is more accurate, and normal work of the trimming overlock machine is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of overlock sewing machines, in particular to a feeding mechanism for an overlock sewing machine for a trimming edge. Background Art

[0002] The overlock sewing machine is a machine used to sew the edges of textiles such as clothes, bags, and shoes. It can cover the edges inside while sewing, making the seams less likely to break and fall off, and plays a role in strengthening and decorating the edges of textiles. The use of the decorative edge overlock sewing machine is very wide. It can be applied to various types of fabrics, such as thin fabrics, denim, thick or polyester fabrics, etc., to increase the decoration of the edges of the fabrics. During the use of the overlock sewing machine, it is necessary to intermittently convey the fabric and change the overlock position of the fabric; in the prior art, when the overlock sewing machine is working, the presser foot presses the fabric on the needle plate of the overlock sewing machine, and the feed dog completes the cycle of rising, feeding, descending, and retreating under the drive of the feed mechanism, pushing the fabric to realize feeding. During the feeding process, the fabric is subjected to a certain force, but the surface smoothness of fabrics of different materials is different. Some fabrics with smooth surfaces are prone to relative sliding with the feeding components, resulting in deviations in the feeding of the overlock sewing machine, affecting the normal operation of the overlock sewing machine. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects, provide a feeding mechanism for a trimming overlock sewing machine, utilize elastic elements to provide power for feeding fabric, facilitate control of the feeding force of the trimming overlock sewing machine according to the size and material of the fabric, make the feeding of the feeding mechanism more accurate, ensure the normal operation of the trimming overlock sewing machine, and effectively solve the problems in the background technology.

[0004] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a feeding mechanism of a trimming overlock sewing machine comprises a transverse shell and a feeding pressing plate;

[0005] Horizontal shell: Feed rollers are rotatably connected between the front and rear inner walls, and the two feed rollers are connected through a feed belt transmission. The upper end of the feed belt is located in the clearance hole on the upper surface of the horizontal shell. Vertical shells are provided at both ends of the horizontal shell, and the rear inner walls of the vertical shells are rotatably connected to a turntable through a rotating shaft.

[0006] Feeding pressure plate: It is rotatably connected to the eccentric end of the front surface of the turntable through the second rotating shaft. The outer side surfaces of the feeding pressure plate are vertically slidably connected to the limit frame. The left and right sides of the limit frame are provided with limit sliding columns. The limit sliding columns are horizontally slidably connected to the sliding holes on the surface of the vertical shell. Elastic elements are used to provide power for feeding the cloth, which is convenient for controlling the feeding force of the trimming overlock sewing machine according to the size and material of the cloth, providing greater force for cloth with smooth surface, making the feeding of the feeding mechanism more accurate, and ensuring the normal operation of the trimming overlock sewing machine.

[0007] Furthermore, the feeding pressure plate includes a hollow vertical plate, a spring, a lower top plate and a pressure plate. The hollow vertical plates are rotatably connected to the eccentric end of the front surface of the turntable through a second rotating shaft. The limit frames are vertically slidably connected to the outer side surfaces of the hollow vertical plates. The interiors of the hollow vertical plates are slidably connected to the lower top plates. The lower ends of the lower top plates pass through through holes on the surfaces of the hollow vertical plates and are provided with pressure plates. The upper surfaces of the lower top plates are provided with springs, which fit the arc-shaped inner walls of the hollow vertical plates to provide power for feeding the cloth.

[0008] Furthermore, the feeding pressure plate also includes an electric push rod and an upper top plate. The electric push rods are respectively arranged at the upper ends of the hollow vertical plates. The lower ends of the telescopic ends of the electric push rods are provided with upper top plates. The upper ends of the springs are respectively fixedly connected to the upper top plates. The input end of the electric push rod is electrically connected to the output end of the overlock sewing machine controller to change the telescopic amplitude of the spring.

[0009] Furthermore, a distance measuring sensor is provided on the lower surface of the upper top plate, and the output end of the distance measuring sensor is electrically connected to the input end of the overlock sewing machine controller to detect the expansion and contraction amplitude of the spring.

[0010] Furthermore, a motor is provided on the rear side of the vertical shell, and the output shaft of the motor is fixedly connected to the rotating shaft of the turntable. The input end of the motor is electrically connected to the output end of the overlock sewing machine controller to provide power for the rotation of the turntable.

[0011] Furthermore, the front and rear inner walls of the transverse shell are rotatably connected to support rollers via a rotating shaft, and the support rollers distributed at equal intervals laterally are in contact with the lower surface of the upper end belt body of the feeding belt to provide support for the upper end belt body of the feeding belt.

[0012] Furthermore, the outer arc surface at the lower end of the pressing plate is fixedly sleeved with a rubber pad to increase the friction force on the surface of the pressing plate.

[0013] Compared with the prior art, the beneficial effects of the utility model are: the feeding mechanism of the trimming overlock sewing machine has the following advantages:

[0014] When in use, the cloth is placed on the surface of the feeding belt, and the motor is started through the controller of the overlock sewing machine to make the hollow vertical plate perform circular reciprocating motion and maintain a vertical state. During the movement of the hollow vertical plate to the left, the elastic force of the spring is used to press the cloth on the surface of the feeding belt through the pressing plate. As the pressing plate moves to the left, the friction between the feeding belt, the cloth and the pressing plate drives the feeding belt to rotate counterclockwise to transport the cloth to the left for a certain distance. Then the hollow vertical plate moves upward to cancel the pressure on the cloth. As the hollow vertical plate reciprocates, the cloth is intermittently fed to the left. At the same time, according to the size and material of the cloth, the electric push rod is started to control the size of the force applied to the cloth during the feeding process. The elastic element is used to provide power for the feeding of the cloth, so that the feeding force of the trim overlock sewing machine can be controlled according to the size and material of the cloth, and a greater force is provided for the cloth with a smooth surface, so that the feeding of the feeding mechanism is more accurate, thereby ensuring the normal operation of the trim overlock sewing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the front view section of the overall device of the utility model.

[0017] In the figure: 1 horizontal shell, 2 feeding roller, 3 feeding belt, 4 vertical shell, 5 turntable, 6 feeding pressure plate, 61 hollow vertical plate, 62 electric push rod, 63 upper top plate, 64 spring, 65 lower top plate, 66 pressure plate, 7 limit frame, 8 limit slide column, 9 motor, 10 distance sensor, 11 support roller, 12 rubber pad. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-2 , This embodiment provides a technical solution: a feeding mechanism of a trimming overlock sewing machine, comprising a transverse shell 1 and a feeding pressing plate 6;

[0020] Horizontal shell 1: Feed rollers 2 are rotatably connected between the front and rear inner walls thereof, and the two feed rollers 2 are connected through transmission by a feed belt 3. The upper end of the feed belt 3 is located in the clearance hole on the upper surface of the horizontal shell 1. Under the support of the feed rollers 2, the feed belt 3 is rotated to provide mobile support for the lower end of the cloth, thereby reducing the friction force on the cloth during feeding. Vertical shells 4 are provided at both left and right ends of the horizontal shell 1 to provide space for the arrangement of the feeding components. The rear inner walls of the vertical shells 4 are rotatably connected to a turntable 5 through a rotating shaft 1. The front and rear inner walls of the horizontal shell 1 are rotatably connected to support rollers 11 through a rotating shaft 3. The support rollers 11 distributed at equal intervals in the horizontal direction are in contact with the lower surface of the upper end of the feed belt 3. The upper end of the feed belt 3 is supported by relative rotation between the upper end of the feed belt 3 and the support rollers 11.

[0021] Feeding pressure plate 6: It is respectively connected to the eccentric end of the front surface of the turntable 5 by rotating shaft 2, and the outer side surface of the feeding pressure plate 6 is vertically slidably connected to the limit frame 7. The left and right sides of the limit frame 7 are provided with limit sliding columns 8. The limit sliding columns 8 are horizontally slidably connected to the sliding holes on the surface of the vertical shell 4. The feeding pressure plate 6 includes a hollow vertical plate 61, a spring 64, a lower top plate 65 and a pressure plate 66. The hollow vertical plate 61 is respectively connected to the eccentric end of the front surface of the turntable 5 by rotating shaft 2, and the limit frame 7 is respectively vertically slidably connected to the outer side surface of the hollow vertical plate 61. The interior of the hollow vertical plate 61 is slidably connected with the lower top plate 65. The lower ends of the lower top plates 65 respectively pass through the through holes on the surface of the hollow vertical plate 61 and are provided with pressure plates 66. The upper surface of the lower top plates 65 is provided with springs 64, and the springs 64 The hollow vertical plate 61 is fitted with the arc-shaped inner wall of the hollow vertical plate 61. When the turntable 5 rotates, the hollow vertical plate 61 at the eccentric end of the turntable 5 performs a circular motion. At the same time, the limiting sliding column 8 slides left and right in the sliding hole on the surface of the vertical shell 4, and the hollow vertical plate 61 slides up and down in the limiting frame 7, so that the hollow vertical plate 61 maintains a vertical state during the circular motion. During the movement of the hollow vertical plate 61, when the hollow vertical plate 61 moves to the left, the pressing plate 66 contacts the cloth. As the hollow vertical plate 61 moves to the left, the pressing plate 66 gradually moves downward, causing the spring 64 to contract. Under the elastic force of the spring 64, the cloth is pressed against the surface of the feeding belt 3 through the pressing plate 66. As the pressing plate 66 moves to the left, the contraction amplitude of the spring 64 continues to increase, and the pressing force on the cloth continues to increase. The friction force between the feeding belt 3, the cloth and the pressing plate 66 drives the feeding belt 3 to rotate counterclockwise, and the cloth is transported to the left for a certain distance. Then the hollow vertical plate 61 moves upward to cancel the pressing of the cloth. With the reciprocating movement of the hollow vertical plate 61, the cloth is intermittently fed to the left. The feeding pressing plate 6 also includes an electric push rod 62 and an upper top plate 63. The electric push rod 62 is respectively arranged at the upper end of the hollow vertical plate 61, and the lower end of the telescopic end of the electric push rod 62 is provided with an upper top plate 63. The upper ends of the springs 64 are respectively fixedly connected to the upper top plate 63. The input end of the electric push rod 62 is electrically connected to the output end of the overlock sewing machine controller. When the electric push rod 62 is started, the telescopic end of the electric push rod 62 drives the upper top plate 63 to move up and down, and the spring 64 is pressed against the upper top plate 63. 4, the expansion and contraction amplitude of the spring 64 is changed, and the magnitude of the force applied to the cloth during the feeding process is changed, so as to facilitate the feeding of cloth of different sizes and materials. The lower surface of the upper top plate 63 is provided with a distance sensor 10, and the output end of the distance sensor 10 is electrically connected to the input end of the overlock sewing machine controller, so as to detect the expansion and contraction amplitude of the spring 64 and judge the magnitude of the force applied to the cloth. The rear side surface of the vertical shell 4 is provided with a motor 9, and the output shaft of the motor 9 is respectively fixedly connected to the rotating shaft of the turntable 5, and the input end of the motor 9 is electrically connected to the output end of the overlock sewing machine controller to provide power for the rotation of the turntable 5. The outer arc surface of the lower end of the pressing plate 66 is fixedly sleeved with a rubber pad 12 to increase the friction force on the surface of the pressing plate 66 and reduce the damage caused by the pressing plate 66 to the cloth.

[0022] The working principle of the feeding mechanism of the decorative edge overlock sewing machine provided by the utility model is as follows: when in use, the whole device is installed on the decorative edge overlock sewing machine, and the cloth is placed on the surface of the feeding belt 3. When the cloth needs to be fed, the motor 9 is started through the overlock sewing machine controller, and the output shaft of the motor 9 drives the turntable 5 to rotate, and the hollow vertical plate 61 at the eccentric end of the turntable 5 performs a circular motion. At the same time, the limiting slide 8 slides left and right in the sliding hole on the surface of the vertical shell 4, and the hollow vertical plate 61 slides up and down in the limiting frame 7, so that the hollow vertical plate 61 maintains a vertical state during the circular motion. In the process of the hollow vertical plate 61 moving to the left, the pressing plate 66 contacts the cloth. As the hollow vertical plate 61 moves to the left, the pressing plate 66 gradually moves downward, and under the support of the supporting roller 11, the pressing plate 66 is blocked from continuing to move downward, causing the spring 64 to contract. Under the action of the elastic force of the spring 64 Under, the cloth is pressed against the surface of the feeding belt 3 by the pressing plate 66. As the pressing plate 66 moves to the left, the contraction amplitude of the spring 64 increases continuously, and the pressing force on the cloth increases continuously. Under the action of the friction between the feeding belt 3, the cloth and the pressing plate 66, the feeding belt 3 is driven to rotate counterclockwise to convey the cloth to the left for a certain distance, and then the hollow vertical plate 61 moves upward to cancel the pressing on the cloth. As the hollow vertical plate 61 moves back and forth, the cloth is intermittently fed to the left, which is convenient for the trimming overlock machine to process the cloth. At the same time, during the feeding process, the electric push rod 62 is started according to the size and material of the cloth. The telescopic end of the electric push rod 62 drives the upper plate 63 to move up and down, changes the telescopic amplitude of the spring 64, and controls the size of the force on the cloth during the feeding process, so as to facilitate the feeding of cloth of different sizes and materials.

[0023] It is worth noting that the electric push rod 62, the distance sensor 10 and the motor 9 disclosed in the above embodiments can be freely configured according to the actual application scenario. The electric push rod 62 can use the LAM1 model electric push rod, the distance sensor 10 can use the T150HJG-CGQ model reflective laser distance sensor, and the motor 9 can use the 3M57-42A model stepper motor. The overlock sewing machine controller controls the operation of the electric push rod 62, the distance sensor 10 and the motor 9 using methods commonly used in the prior art.

[0024] The above are only embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. The feeding mechanism of the trimming overlock sewing machine is characterized by: It comprises a transverse shell (1) and a feeding pressing plate (6); A transverse shell (1): a feed roller (2) is rotatably connected between the front and rear inner walls thereof, the two feed rollers (2) are connected by a feed belt (3), the upper end of the feed belt (3) is located in a clearance hole on the upper surface of the transverse shell (1), and vertical shells (4) are provided at both left and right ends of the transverse shell (1), and the rear inner walls of the vertical shells (4) are rotatably connected to a turntable (5) via a rotating shaft; The feeding pressing plate (6) is rotatably connected to the eccentric end of the front surface of the rotating disk (5) through the second rotating shaft. The outer side surface of the feeding pressing plate (6) is vertically slidably connected to the limit frame (7). The left and right sides of the limit frame (7) are provided with limit sliding columns (8). The limit sliding columns (8) are horizontally slidably connected to the sliding holes on the surface of the vertical shell (4).

2. The feeding mechanism of the trimming overlock sewing machine according to claim 1, characterized in that: The feeding pressure plate (6) comprises a hollow vertical plate (61), a spring (64), a lower top plate (65) and a pressure plate (66); the hollow vertical plate (61) is rotatably connected to the eccentric end of the front surface of the turntable (5) through a second rotating shaft; the limit frame (7) is vertically slidably connected to the outer side surface of the hollow vertical plate (61); the interior of the hollow vertical plate (61) is slidably connected to the lower top plate (65); the lower end of the lower top plate (65) passes through the through hole on the surface of the hollow vertical plate (61) and is provided with a pressure plate (66); the upper surface of the lower top plate (65) is provided with a spring (64); the spring (64) is in contact with the arc-shaped inner wall of the hollow vertical plate (61).

3. The feeding mechanism of the trimming overlock sewing machine according to claim 2, characterized in that: The feeding pressing plate (6) further comprises an electric push rod (62) and an upper top plate (63), wherein the electric push rod (62) is respectively arranged at the upper end of the hollow vertical plate (61), the lower end of the telescopic end of the electric push rod (62) is provided with an upper top plate (63), the upper end of the spring (64) is respectively fixedly connected to the upper top plate (63), and the input end of the electric push rod (62) is electrically connected to the output end of the overlock sewing machine controller.

4. The feeding mechanism of the trimming overlock sewing machine according to claim 3, characterized in that: The lower surface of the upper top plate (63) is provided with a distance sensor (10), and the output end of the distance sensor (10) is electrically connected to the input end of the overlock sewing machine controller.

5. The feeding mechanism of the trimming overlock sewing machine according to claim 1, characterized in that: The rear side of the vertical shell (4) is provided with a motor (9), the output shaft of the motor (9) is fixedly connected to the rotating shaft of the turntable (5), and the input end of the motor (9) is electrically connected to the output end of the overlock sewing machine controller.

6. The feeding mechanism of the trimming overlock sewing machine according to claim 1, characterized in that: The front and rear inner walls of the transverse shell (1) are rotatably connected to support rollers (11) via three rotating shafts, and the support rollers (11) distributed at equal intervals in the transverse direction are in contact with the lower surface of the upper end of the feeding belt (3).

7. The feeding mechanism of the trim overlock sewing machine according to claim 2, characterized in that: The outer arc surface at the lower end of the pressing plate (66) is fixedly sleeved with a rubber pad (12).

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