Leather cutting structure

Abstract

The application discloses a leather cutting structure and belongs to the technical field of leather processing. The leather cutting structure comprises a square machine frame, a supporting seat is arranged at the bottom of the machine frame, and inclined supporting parts are symmetrically arranged at the front and back of the supporting seat; a gas cylinder is fixed to the top of the machine frame, the machine shaft of the gas cylinder is vertically downward, a horizontal lifting plate is fixed to the gas cylinder, a cutting tool is fixed to the middle of the lower end surface of the lifting plate, abutting plates are symmetrically and elastically arranged at the front and back of the lower end surface of the lifting plate, and the two abutting plates are inclined plate body structures matched with the supporting parts; a cutting groove is formed in the middle of the upper end surface of the supporting seat and corresponds to the position of the cutting tool, a slag discharging air duct is formed in the bottom of the cutting groove, one end of the slag discharging air duct is matched with an air pump, and the other end of the slag discharging air duct is matched with a dust collecting cylinder. The leather cutting structure has the advantages that the precision of cutting leather for automobile seats is improved, the automatic cleaning of the cutting process is realized, and the overall use effect is good.

Description

Technical Field

[0001] This application relates to the field of leather processing technology, and more specifically, to a leather cutting structure. Background Technology

[0002] In the manufacturing process of car seats, the cutting of high-quality leather or synthetic leather fabric is a key step in ensuring the aesthetics, comfort, and safety of the final product. Car seat leather not only covers a large area and has a complex shape, but also requires extremely high cutting precision. Any slight displacement or wrinkling will prevent the parts from being accurately sewn together, affecting the three-dimensional support of the seat and even the normal deployment of the side airbags.

[0003] Currently, in small- to medium-scale production or sample production, manual cutting with a cutting knife or simple stamping dies is commonly used. However, these stamping dies lack an effective clamping mechanism that can adapt to the natural thickness of the leather, making it easy for the leather to slip or wrinkle under the blade during cutting. This causes the cutting line to deviate from the design position, affecting product quality.

[0004] Furthermore, leather scraps generated after cutting can easily remain on the mold or worktable. If not cleaned thoroughly, they may be pressed into the leather surface during subsequent processing, creating defects. This is especially true when cutting leather for airbag areas, where any remaining tiny hard scraps can affect the airbag's deployment performance, posing a safety hazard.

[0005] Therefore, this application proposes a leather cutting structure to solve the above-mentioned technical problems. Utility Model Content

[0006] The summary section of this application is intended to provide a brief overview of the concepts, which will be described in detail in the detailed description section below. This summary section is not intended to identify key or essential features of the claimed technical solutions, nor is it intended to limit the scope of the claimed technical solutions.

[0007] The purpose of this application is to address the shortcomings of the prior art by providing a leather cutting structure to solve problems such as easy displacement and wrinkling of leather due to uneven compression, as well as product defects and safety risks caused by waste residue.

[0008] To achieve the above objectives, this application provides the following technical solution:

[0009] A leather cutting structure includes a square frame, a support base at the bottom of the frame, inclined support portions symmetrically arranged on the front and rear sides of the support base, a cylinder fixed at the top of the frame, the cylinder's shaft pointing vertically downward and fixed with a horizontal lifting plate, a cutting blade fixed at the center of the lower end face of the lifting plate, and abutment plates symmetrically and elastically installed on the front and rear sides of the lower end face of the lifting plate, the two abutment plates being inclined plate structures adapted to the support portions;

[0010] A cutting groove is provided at the middle of the upper surface of the support base corresponding to the position of the cutting tool. A slag discharge air passage is provided at the bottom of the cutting groove. A blower is connected to one end of the slag discharge air passage, and a dust collection cylinder is connected to the other end.

[0011] Furthermore, the two ends of the lifting plate slide vertically against the inner walls of both sides of the machine frame.

[0012] Furthermore, several vertical fixing cylinders are fixed on both the front and rear sides of the lower end of the lifting plate, and a spring is fixed to the top of the abutment plate, which is vertically inserted into the fixing cylinder.

[0013] Furthermore, one end of the slag discharge air passage is connected to the air pump, and the other end is fixed with a slag discharge pipe extending out of the support base, and the air pump blows air in the direction of the slag discharge pipe.

[0014] Furthermore, a connecting pipe is fixed to one end of the dust collection cylinder and threadedly fixed to the outer port of the slag discharge pipe.

[0015] Furthermore, a limiting cylinder is fixed to one end of the connecting pipe facing the inside of the dust collection cylinder, and the limiting cylinder faces the conical cylinder structure inside the dust collection cylinder.

[0016] Furthermore, a cover can be detachably installed at the end of the dust collection cylinder away from the connecting pipe, and a filter element is provided in the middle of the cover.

[0017] The beneficial effects of this application are as follows:

[0018] In the above solution, the cooperation between the elastically installed abutment plate and the inclined support on the support base can first uniformly press the leather and adapt to its thickness changes when the cylinder drives the cutting blade to move downwards. This can effectively prevent the leather from shifting and wrinkling during the cutting process, ensure the accuracy of the cutting outline, and help improve product quality.

[0019] In the above solution, the slag discharge air duct at the bottom of the cutting groove, in conjunction with the air pump and dust collection cylinder, can generate a strong airflow immediately after each cutting, automatically blowing the leather scraps and small waste materials in the groove into the dust collection cylinder for collection. This helps to keep the working area clean, prevent waste materials from damaging the leather surface, and eliminate potential safety hazards.

[0020] In summary, this device not only improves the precision of cutting automotive seat leather, but also achieves automatic cleaning during the cutting process, resulting in excellent overall performance. Attached Figure Description

[0021] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0022] Furthermore, throughout the accompanying drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the elements are not necessarily drawn to scale.

[0023] In the attached diagram:

[0024] Figure 1 This is a schematic diagram of the structure of this application;

[0025] Figure 2 This is a schematic diagram of the internal structure of this application;

[0026] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0027] Figure 4 This is a schematic diagram of the internal structure of the dust collection cylinder of this application.

[0028] Figure label:

[0029] 1. Machine frame; 2. Support base; 201. Support section; 3. Cutting groove; 301. Slag discharge air passage; 4. Cylinder; 5. Lifting plate; 6. Cutting blade; 7. Abutment plate; 701. Fixing cylinder; 702. Spring; 8. Air pump; 9. Slag discharge pipe; 10. Dust collection cylinder; 1001. Connecting pipe; 1002. Limiting cylinder; 11. Machine cover. Detailed Implementation

[0030] The following is a detailed description of a leather cutting structure provided by this application, in conjunction with the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more comprehensive, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit this application.

[0031] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0032] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0033] The present application will now be described in detail with reference to the accompanying drawings and embodiments.

[0034] Reference Figure 1-4 As shown, this utility model provides a leather cutting structure, including a square frame 1 welded from high-strength steel. A support base 2 is bolted to the bottom of the frame 1, and its top surface is precision ground to ensure flatness. The front and rear edges of the support base 2 are specially processed to form symmetrically arranged inclined support parts 201. The angle between the inclined surface and the horizontal plane is preferably 75 to 85 degrees. This design provides a precise guiding basis for subsequent pressing actions.

[0035] At the top center of the machine frame 1, a cylinder 4 with adjustable output force is fixed by a reinforcing mounting plate, serving as the drive source for this device. The piston rod of the cylinder 4 extends vertically downwards, and its end is fixed to a rectangular lifting plate 5 via a threaded connection or flange. The lifting plate 5 is made of aluminum alloy to reduce weight. In practice, linear bearings or wear-resistant sliders are respectively installed at its left and right ends, forming a sliding pair with the precision linear guides installed on the inner walls of both sides of the machine frame 1. This ensures that the lifting plate 5 can move smoothly and strictly in the vertical direction under the drive of the cylinder 4, effectively resisting the lateral torque generated during the cutting process and preventing any form of deflection or jamming of the lifting plate 5.

[0036] A standardized tool mounting interface is machined in the middle of the lower end face of the lifting plate 5 for fixing and mounting the cutting tool 6. This cutting tool 6 can be quickly replaced according to the pattern of the leather cover for different parts of the car seat. Its cutting edge undergoes special heat treatment and polishing to ensure lasting sharpness. To achieve reliable compression of the leather, four vertically downward fixing cylinders 701 are symmetrically installed on both the front and rear sides of the lower end face of the lifting plate 5. Each fixing cylinder 701 contains a guide post, and the lower end of each guide post is fixedly connected to a long strip-shaped abutment plate 7. A spring 702 is fitted onto the guide post; the upper end of the spring 702 abuts against the stepped surface inside the fixing cylinder 701, while the lower end presses against the abutment plate 7. Thus, the two abutment plates 7 can independently and elastically float relative to the lifting plate 5 under the action of the spring 702. The working surface of the abutment plate 7 is machined into an inclined surface that perfectly matches the inclined support portion 201 on the support base 2.

[0037] A through-cutting groove 3 is formed at the center of the upper surface of the support base 2, extending along its length. The width of the cutting groove 3 is slightly larger than the thickness of the cutting blade 6 to provide appropriate movement clearance for the blade. The bottom of the cutting groove 3 is connected to a built-in slag discharge air passage 301. The slag discharge air passage 301 can be a tapered streamlined design, with one end connected to a high-pressure air pump 8 via a flexible pipe, and the other end connected to a metal slag discharge pipe 9 leading to the outside of the support base 2. In practice, the start and stop of the air pump 8 can be linked to the cylinder 4 by the control system to ensure that it starts at specific times within the working cycle. The installation direction of the air pump 8 is set to blow air towards the slag discharge pipe 9, thereby forming a high-speed airflow that is drawn outward from the bottom of the cutting groove 3 within the slag discharge air passage 301.

[0038] To collect all waste and debris carried out by the airflow, a transparent dust collection cylinder 10 is connected to the outer port of the slag discharge pipe 9 via a quick-connect threaded joint. A connecting pipe 1001 is fixed to the inlet end of the dust collection cylinder 10, achieving a sealed connection with the slag discharge pipe 9. A flared limiting cylinder 1002 is fixedly installed at the end of the connecting pipe 1001 that extends into the dust collection cylinder 10. This limiting cylinder 1002 is made of engineering plastic, with its smaller end facing inwards towards the dust collection cylinder 10 and its larger end mating with the connecting pipe 1001 to prevent waste rebound. A removable cover 11 is installed at the tail end of the dust collection cylinder 10 via a snap-fit ​​structure. A replaceable high-efficiency air filter is embedded in the center of the cover 11. This filter allows air to pass through smoothly but effectively traps micron-sized leather dust and debris.

[0039] Working Principle: In operation, the operator first lays the pre-cut car seat leather flat on the upper surface of the support base 2. After starting the equipment, the cylinder 4 drives the lifting plate 5 downwards. Initially, the elastically mounted abutment plates 7 on both sides contact the leather first, and as the machine continues to descend, their inclined surfaces slide along the inclined support portion 201 of the support base 2. During this process, the spring 702 is compressed, and the resulting pressure evenly tensions and compacts the leather from both sides towards the center. Subsequently, the cutting blade 6 in the center contacts the completely fixed leather and cleanly cuts into the cutting groove 3, completing a precise cut. Simultaneously, the air pump 8 can be activated to generate airflow that instantly passes through the cutting groove 3 and the slag discharge duct 301, blowing all waste and debris in the groove into the dust collection cylinder 10 via the slag discharge pipe 9. The waste is trapped in the dust collection cylinder 10, while the filtered clean air is discharged. The operator can periodically unscrew the dust collection cylinder 10 and open the machine cover 11 to clean the waste. The entire process achieves fully automated integration of pressing, cutting, and cleaning, greatly improving the efficiency, quality, and safety of cutting automotive seat leather.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

[0041] It should be noted that this application covers any alternatives, modifications, equivalent methods, and solutions made within the spirit and scope of this application. To provide the public with a thorough understanding of this application, specific details are described in detail in the preferred embodiments, while those skilled in the art can fully understand this application without these details. Furthermore, to avoid unnecessary confusion regarding the substance of this application, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0042] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this application, and these improvements and modifications should also be considered within the scope of protection of this application.

Claims

1. A leather cutting structure, comprising a square frame (1), characterized in that, The bottom of the frame (1) is provided with a support base (2), and the front and rear sides of the support base (2) are symmetrically provided with inclined support parts (201). The top of the frame (1) is fixed with a cylinder (4), the shaft of the cylinder (4) is vertically downward and fixed with a horizontal lifting plate (5). The lower end face of the lifting plate (5) is fixed with a cutting knife (6). The front and rear sides of the lower end face of the lifting plate (5) are symmetrically elastically installed with abutment plates (7). The two abutment plates (7) are inclined plate structures adapted to the support parts (201). The upper end face of the support base (2) is provided with a cutting groove (3) corresponding to the position of the cutting knife (6). The bottom of the cutting groove (3) is provided with a slag discharge air passage (301). One end of the slag discharge air passage (301) is equipped with a wind pump (8), and the other end is equipped with a dust collection cylinder (10).

2. The leather cutting structure according to claim 1, characterized in that: The two ends of the lifting plate (5) slide vertically against the inner walls of both sides of the machine frame (1).

3. The leather cutting structure according to claim 1, characterized in that: The lower end of the lifting plate (5) is fixed with several vertical fixing cylinders (701) on both the front and rear sides, and the top of the abutting plate (7) is fixed with a spring (702) that is vertically inserted into the fixing cylinder (701).

4. The leather cutting structure according to claim 1, characterized in that: One end of the slag discharge air passage (301) is connected to the air pump (8), and the other end is fixed with a slag discharge pipe (9) extending out of the support base (2), and the air pump (8) blows air towards the slag discharge pipe (9).

5. The leather cutting structure according to claim 4, characterized in that: One end of the dust collection cylinder (10) is fixed with a connecting pipe (1001) and threadedly fixed to the outer port of the slag discharge pipe (9).

6. The leather cutting structure according to claim 5, characterized in that: One end of the connecting pipe (1001) facing the inside of the dust collection cylinder (10) is fixed with a limiting cylinder (1002), and the limiting cylinder (1002) faces the conical cylinder structure inside the dust collection cylinder (10).

7. The leather cutting structure according to claim 6, characterized in that: A cover (11) can be detachably installed at one end of the dust collection cylinder (10) away from the connecting pipe (1001), and a filter element is provided in the middle of the cover (11).

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