High-efficiency leather punching device

Abstract

This utility model relates to the field of leather processing, and more particularly to a high-efficiency leather punching device, including a frame, a lifting cylinder, and punching components. This utility model features multiple movable frames, each equipped with multiple punches of different diameters. An electric drive component adjusts the distance between adjacent movable frames, thereby adjusting the distance between adjacent punches. This allows the lifting frame to synchronously move each punch downwards, simultaneously punching multiple holes in the leather, thus improving punching efficiency. Simultaneously, a rotating frame drives the movable frames to rotate, ensuring that punches of different outer diameters face downwards towards the leather, allowing different sized punches to create holes of different sizes. This enables rapid punching change, further enhancing work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of leather processing, and in particular to a high-efficiency leather punching device. Background Technology

[0002] Leather is animal hide that has undergone physical and chemical processing such as hair removal and tanning, and has been modified to be less prone to decay. In some leather processing, perforation equipment is used to perforate the leather to meet its breathability requirements, or for decorative purposes, to enrich the appearance design of the leather and reflect the brand's style, or to facilitate subsequent processing or use.

[0003] Patent number CN222556961U discloses a leather punching device, which uses a groove on one side of the top plate to install a sliding block. The sliding block moves left and right on the outer wall of the threaded rod, and the sliding block drives the punching device to move, which facilitates the punching of leather that needs to be punched.

[0004] While the existing patent allows for punching holes in different locations on leather, it only has one punch. If a large number of holes need to be punched, the motor must be constantly adjusted to change the punch's position. This constant adjustment can easily affect punching efficiency. Furthermore, the electric telescopic rod can sometimes drive the punch downwards to punch holes if it's not properly adjusted, also affecting accuracy. Additionally, because there's only one punch, its size is fixed, resulting in a fixed number of holes. Since different products require different hole sizes—for example, holes for metal buckles or belt buckles on shoes and bags—the size must fit the corresponding fasteners. This can lead to frequent punch replacements, further impacting efficiency. Summary of the Invention

[0005] Therefore, in order to overcome the above-mentioned shortcomings, this utility model provides a high-efficiency leather punching device to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a high-efficiency leather perforation device, comprising a frame, a lifting cylinder installed on the top of the frame, and a perforation assembly provided inside the frame. The perforation assembly includes a lifting frame, a rotating frame, a first motor, a moving frame, a perforator, a strip hole, an electric drive assembly, and a position detector. The lifting frame is slidably installed inside the frame and connected to the piston rod at the bottom of the lifting cylinder. The first motor is installed on the side surface of the lifting frame. The rotating frame is rotatably installed inside the lifting frame, and the output shaft of the first motor is connected to the rotating frame through a coupling. Two or more moving frames are slidably installed inside the rotating frame.

[0007] An electric drive assembly is installed inside the lifting frame, which is used to drive the moving frame to move horizontally along the rotating frame.

[0008] Two or more punches can be detachably installed on the side surface of the movable frame. Each punch has a different outer diameter and moves through the inside of a strip hole opened on the side surface of the rotating frame.

[0009] Position detectors are installed on the side surfaces of the moving frames, and these detectors are used to detect the distance between two adjacent moving frames.

[0010] Preferably, the electric drive assembly includes a second motor installed in the movable frame, a gear sleeved on the output shaft of the second motor, and a rack installed in the rotating frame. The rack moves through the side surface of each movable frame and meshes with the gear.

[0011] Preferably, the punches on the movable frame are distributed in a ring at equal intervals, with a gap between the topmost punch and the inner top of the lifting frame, and the outer diameter of the punch is smaller than the inner width of the strip hole.

[0012] Preferably, two lifting cylinders are installed on the top of the frame, and the piston rods of the two lifting cylinders are respectively connected to the left and right ends of the top of the lifting frame.

[0013] Preferably, the position detector is a laser displacement sensor.

[0014] The beneficial effects of this utility model are:

[0015] This invention features multiple movable frames, each equipped with multiple punches of varying diameters. An electric drive assembly adjusts the distance between adjacent movable frames, thereby adjusting the distance between adjacent punches. This allows the lifting frame to move each punch downwards synchronously, simultaneously creating multiple holes in the leather, thus improving punching efficiency. Simultaneously, a rotating frame rotates the movable frames, ensuring that punches of different outer diameters face downwards towards the leather, creating holes of varying sizes. This allows for quick punching changes, further enhancing work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the drilling device of this utility model;

[0017] Figure 2 This is a front view cross-sectional structural diagram of the drilling device of this utility model;

[0018] Figure 3 This is a schematic diagram of the rotating frame connection structure of this utility model;

[0019] Figure 4 This is a side view sectional structural diagram of the electric drive assembly of this utility model;

[0020] Figure 5 This is a cross-sectional structural diagram of the electric drive component of this utility model.

[0021] The components include: frame-1, lifting cylinder-2, drilling assembly-3, lifting frame-31, rotating frame-32, first motor-33, moving frame-34, punch-35, strip hole-36, electric drive assembly-37, position detector-38, second motor-371, gear-372, and rack-373. Detailed Implementation

[0022] To further explain the technical solution of this utility model, a detailed description is provided below through specific embodiments.

[0023] like Figures 1 to 3 As shown, this utility model provides a high-efficiency leather punching device, including a frame 1 and a lifting cylinder 2 installed on the top of the frame 1. The lifting cylinder 2 is a pneumatic cylinder. A punching assembly 3 is provided inside the frame 1. The punching assembly 3 includes a lifting frame 31, a rotating frame 32, a first motor 33, a moving frame 34, a punch 35, a strip hole 36, an electric drive assembly 37, and a position detector 38. The lifting frame 31 can slide vertically up and down along the inner side of the frame 1, and the inverted U-shaped lifting frame 31 is connected to the piston rod at the bottom of the lifting cylinder 2.

[0024] The first motor 33 is installed on the left end face of the lifting frame 31, the rotating frame 32 is rotatably installed inside the lifting frame 31, and the output shaft of the first motor 33 is connected to the rotating frame 32 through a coupling. Two or more movable frames 34 are slidably installed inside the rotating frame 32.

[0025] An electric drive assembly 37 is provided inside the lifting frame 31. The electric drive assembly 37 is used to drive the moving frame 34 to move horizontally and left and right along the rotating frame 32.

[0026] Four punches 35 are threadedly installed on the movable frame 34. The outer diameter of each punch 35 gradually increases in the clockwise direction. The punches 35 on each movable frame 34 are evenly distributed, and the punches 35 move through the inside of the strip hole 36 opened on the side surface of the rotating frame 32. The punches 35 are used for punching holes in leather.

[0027] A position detector 38 is fixedly embedded on the side surface of the movable frame 34. The position detector 38 is used to detect the distance between two adjacent movable frames 34.

[0028] Among them, the punches 35 on the movable frame 34 are distributed in a ring at equal intervals. The topmost punch 35 is spaced from the top inner side of the lifting frame 31, and the outer diameter of the punch 35 is smaller than the inner width of the strip hole 36, reducing the friction between the punch 35 and the strip hole 36 during movement.

[0029] Among them, two lifting cylinders 2 are installed on the top of the frame 1. The piston rods of the two lifting cylinders 2 are respectively connected to the left and right ends of the top of the lifting frame 31, so that the lifting frame 31 can be moved up and down stably through the two lifting cylinders 2.

[0030] In this embodiment, the position detector 38 is a laser displacement sensor, which is used to accurately detect the distance between two adjacent moving frames 34;

[0031] like Figure 4 and Figure 5 As shown, in this embodiment, the electric drive assembly 37 includes a second motor 371 locked and fixed in the movable frame 34, and a rack 373 installed in the rotating frame 32. A gear 372 is installed on the output shaft of the second motor 371 through a coupling. The rack 373 moves through the side surface of each movable frame 34 and meshes with the gear 372.

[0032] In this embodiment, both the first motor 33 and the second motor 371 are servo motors. With the help of their internal encoder feedback mechanism and the cooperation with the servo driver, the servo motor has excellent ability to precisely control the rotation angle and rotation speed of the output shaft, thereby accurately controlling the rotation angle of the rotating frame 32 and accurately adjusting the position of the moving frame 34.

[0033] Specifically, in use, the spacing between adjacent punches 35 is adjusted according to the spacing of the holes in the leather. The second motor 371 is started to drive the gear 372 to rotate. The gear 372, in conjunction with the rack 373, drives the moving frame 34 to move horizontally along the inner side of the rotating frame 32. The moving frame 34 drives the position detector 38 to move synchronously. The position detector 8 is a laser displacement sensor. It emits a laser beam to the adjacent moving frame 34. The laser beam is reflected on the surface of the moving frame 34 and received by the sensor. Based on the laser's time of flight, phase change, or triangulation principle, the distance between the laser and the target object is accurately measured. When the spacing between two moving frames 34 reaches the preset value, the second motor 371 stops working. The spacing of more moving frames 34 is adjusted in the same way. The moving frame 34 drives the punches 35 to perform synchronous position adjustment.

[0034] Then, the leather is transported by a take-up roller in conjunction with a take-up roller or a belt conveyor. The lifting cylinder 2 drives the lifting frame 31, rotating frame 32, moving frame 34 and punch 35 to move downward. Each punch 35 moves downward synchronously to punch holes in the leather. Multiple punches 35 work synchronously to achieve efficient punching of the leather.

[0035] When it is necessary to punch holes of different sizes in the leather, the first motor 33 can be started to drive the rotating frame 32 to rotate. The rotating frame 32 drives the moving frame 34 and the punch 35 to rotate, so that the punches 35 of different sizes rotate downward, making it easier for the subsequent lifting cylinder 2 to drive the lifting frame 31 and the punch 35 to move downward to punch holes of different sizes in the leather.

[0036] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A high-efficiency leather punching device, comprising a frame, a lifting cylinder mounted on the top of the frame, and a punching assembly installed inside the frame; Its features are, The drilling assembly includes a lifting frame slidably installed inside the frame and connected to the piston rod at the bottom of the lifting cylinder, a first motor installed on the side surface of the lifting frame, and a rotating frame rotatably installed inside the lifting frame and connected to the output shaft of the first motor. Two or more movable frames are slidably installed inside the rotating frame. An electric drive assembly is installed inside the lifting frame, which is used to drive the moving frame to move horizontally along the rotating frame. Two or more punches can be detachably installed on the side surface of the mobile frame. The outer diameter of each punch is different. The punches on each mobile frame are distributed in the same way, and the punches move through the inside of the strip hole opened on the side surface of the rotating frame. Position detectors are installed on the side surfaces of the moving frames, and these detectors are used to detect the distance between two adjacent moving frames.

2. The high-efficiency leather punching device according to claim 1, characterized in that: The electric drive assembly includes a second motor installed in the movable frame, a gear sleeved on the output shaft of the second motor, and a rack installed in the rotating frame. The rack moves through the side surface of each movable frame and meshes with the gear.

3. The high-efficiency leather punching device according to claim 1, characterized in that: The punches on the mobile frame are distributed in a ring at equal intervals. The topmost punch is spaced apart from the top inner side of the lifting frame, and the outer diameter of the punch is smaller than the inner width of the strip hole.

4. The high-efficiency leather punching device according to claim 1, characterized in that: Two lifting cylinders are installed on the top of the frame, and the piston rods of the two lifting cylinders are respectively connected to the left and right ends of the top of the lifting frame.

5. The high-efficiency leather punching device according to claim 1, characterized in that: The position detector is a laser displacement sensor.

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