An adjustable die-cutting and grinding device for automotive interior leather.
By designing an adjustable grinding device for the die-cutting edge of automotive interior leather, the problem of the die being unable to cut after wear has been solved, achieving automated grinding, improving grinding efficiency and quality, and extending the service life of the die.
Patent Information
- Application Number
- CN202521940092.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-10
- Publication Date
- 2026-11-06
- Estimated Expiration
- 2035-09-10
AI Technical Summary
In the existing technology, the lifespan of automotive interior leather punching dies is limited by the strength of the metal material, which causes the dies to become worn and unable to cut. Furthermore, manual grinding is time-consuming, labor-intensive, and difficult to guarantee grinding quality.
An adjustable grinding device for the cutting edge of a die for punching automotive interior leather has been designed, comprising a base, a main body, conformal rollers, adjusting shims, a cutting head, and a cutting head fixing cap. By adjusting the height of the shims and changing the cutting head at different angles, automated grinding can be achieved to ensure a sharp cutting edge.
Automated blade grinding has been achieved, improving grinding efficiency and quality, reducing the labor intensity of manual operation, and ensuring the sharpness and service life of the die.
Smart Images

Figure CN224939746U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts manufacturing and processing technology, and in particular to an adjustable grinding device for the cutting edge of an automotive interior leather punching die. Background Technology
[0002] In the mass production of automotive interior trim, punching dies are widely used in the cutting of PUR and PVC skins, slicing the skins into pieces of specific shapes for automotive interior trim production. Due to the strength limitations of metal materials, most dies have a lifespan of only 5000 cuts, after which localized areas become uncut due to die wear. Therefore, a die-sharpening device is needed to sharpen these uncut areas, restoring the cutting edge to its sharpness. However, current technology relies on frequent manual sharpening of the cutting edge, which is not only laborious and time-consuming but also makes it difficult to ensure the quality of the sharpening process. Summary of the Invention
[0003] The purpose of this invention is to provide an adjustable grinding device for the cutting edge of a punching die for automotive interior leather, in order to address the aforementioned practical situation.
[0004] The technical solution adopted in this utility model is as follows: An adjustable die-cutting and grinding device for automotive interior leather includes a base, a main body, a conformal roller, an adjusting shim, a cutter head, a cutter head fixing cap, and a roller mounting cap. A main body screw is fixed to the center of the base, and mounting screws are also provided on both sides of the main body screw. The adjusting shim, the main body, and the cutter head all have fixing holes corresponding to the main body screw. A handle is fixed to one side of the main body. The adjusting shim, the main body, and the cutter head are sequentially inserted into the main body screw. The cutter head fixing cap is screwed onto the end of the main body screw, fixing the adjusting shim, the main body, and the cutter head together. The cutter head protrudes from the base, the main body, and the adjusting shim. The conformal roller has a mounting hole and is movably mounted on the mounting screw. The roller mounting cap is fixed to the end of the mounting screw. The conformal roller protrudes from the base, the main body, and the adjusting shim.
[0005] The adjustable automotive interior leather punching die blade grinding device is characterized in that the diameter of the conformal roller is slightly larger than the width of the grinding device base, and the base, main body and adjusting pad are protruding.
[0006] This utility model relates to an adjustable grinding device for the cutting edge of a punching die for automotive interior leather. It is scientifically designed, simple in structure, and easy to manufacture. The grinding device can be adapted to grinding heads with different angles and grits. The height of the grinding head can be adjusted by using shims of different heights. It is convenient to operate, safe and reliable, and ensures the grinding quality of the punching die edge. Attached Figure Description
[0007] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.
[0008] Figure 1 This is a three-dimensional schematic diagram of the adjustable automotive interior leather punching die blade grinding device of this utility model; Figure 2 This is a schematic diagram of the main view of this utility model; Figure 3 for Figure 2 Left view diagram; Figure 4 for Figure 3 A schematic diagram of the AA-direction section; Figure 5 for Figure 3 BB-direction sectional view; Among them, 1-base; 2-body; 2a-handle; 3-conformal roller; 4-adjusting shim; 5-blade head; 6-blade head fixing cap; 7-roller mounting cap. Detailed Implementation
[0009] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described below are merely illustrative of this utility model. Key terms that need attention in these descriptions, including "conformal rolling wheel," "adjusting shim," "main body screw," and "mounting screw," are simply customary names used for ease of description and to simplify the description; therefore, they should not be construed as limitations on this utility model.
[0010] like Figure 1-3 As shown, the adjustable automotive interior leather punching die blade grinding device of this utility model includes a base 1, a main body 2, a conformal roller 3, an adjusting shim 4, a blade head 5, a blade head fixing cap 6, and a roller mounting cap 7. A main body screw is fixed in the middle of the base 1. In this embodiment, mounting screws are also fixed on both sides of the main body screw. The adjusting shim 4, the main body 2, and the blade head 5 all have fixing holes corresponding to the main body screw. A handle 2a is fixed to one side of the main body 2. The adjusting shim 4, the main body 2, and the blade head 5 are sequentially inserted into the main body screw. The blade head fixing cap 6 is screwed onto the end of the main body screw, fixing the adjusting shim 4, the main body 2, and the blade head 5 together. See [reference needed]. Figure 4 As shown, the blade 5 (blade tip) protrudes from the outer edges of the base 1, the main body 2, and the adjusting shim 4. The conformal roller 3 has a diameter slightly larger than the width of the grinding device base 1, and is provided with mounting holes, and is movably mounted on the mounting screw. See [reference needed]. Figure 5As shown, similar to the cutter head 5, the conformal roller 3 (outer edge) protrudes from the outer edges of the base 1, the main body 2, and the adjusting shim 4. The roller mounting cap 7 is fixed to the end of the mounting screw and serves as a limit.
[0011] In use, this utility model eliminates the need to disassemble the punching die. The main body 1 of the grinding device can be height-adjusted via the adjusting shim 4, and the grinding angle and precision can be adjusted by replacing the blade heads 5 with different angles and grinding grits. During operation, the base 1 of the punching die edge grinding device is placed on the base of the punching die. The grinding blade head 5 is adjusted to a suitable height and angle, and is positioned against the punching die by the conformal roller 3. The blade head 5 adheres to the punching die edge, forming a stable support. The user holds the handle 2a and performs a reciprocating motion, sharpening the punching die blade with the grinding blade head 5, making the punching die edge sharp. In this utility model's punching die edge grinding device, the base 1 and conformal roller 3 are firmly supported by the punching die, which helps ensure the grinding quality of the punching die edge.
[0012] The above description is only a general embodiment of this utility model. For those skilled in the art, there are various other embodiments with modifications and variations, which will not be elaborated here. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model are included within the protection scope claimed by this utility model.
Claims
1. An adjustable grinding device for the cutting edge of a punching die for automotive interior leather, comprising a base (1), a main body (2), a conformal roller (3), an adjusting shim (4), a cutting head (5), a cutting head fixing cap (6), and a roller mounting cap (7), characterized in that, The base (1) is fixed with a main screw in the middle and also has an installation screw fixed on both sides of the main screw. The adjusting shim (4), the main body (2) and the cutter head (5) are all provided with fixing holes corresponding to the main screw. A handle (2a) is fixed on one side of the main body (2). The adjusting shim (4), the main body (2) and the cutter head (5) are sequentially installed into the main screw. The cutter head fixing cap (6) is screwed onto the end of the main screw to fix the adjusting shim (4), the main body (2) and the cutter head (5) together. The cutter head (5) protrudes from the base (1), the main body (2) and the adjusting shim (4). The conformal roller (3) is provided with an installation hole and is movably installed on the installation screw. The roller mounting cap (7) is fixed to the end of the installation screw. The conformal roller (3) protrudes from the base (1), the main body (2) and the adjusting shim (4).
2. The adjustable automotive interior leather punching die blade grinding device according to claim 1, characterized in that, The diameter of the conformal roller (3) is slightly larger than the width of the grinding device base (1), protruding from the base (1), the main body (2) and the adjusting pad (4).
