Process for reducing thick material stamping landing edge waste

Abstract

The invention discloses a process for reducing thick material stamping landing edge waste, which comprises the following steps: providing a thick material belt, and sequentially punching the thick material belt at equal intervals to form positioning holes; blanking the adjacent positioning holes in the thick material belt to form a continuous pre-bracket, wherein the length from the top end to the lower end of the pre-bracket is equal to the width of the thick material belt; and the corners of the pre-supports are punched at one end of the continuous pre-supports for multiple times according to the preset shape, the corners are flattened and then cut, and the supports are formed. The method comprises the following steps of: stamping a high-thickness material belt into a small-thickness corner, finally thinning the small-thickness corner, cutting the low-thickness corner, and removing the corner. The waste materials are widened in the mode that the thickness is thinned firstly, and the situation that the ratio of the thickness to the width of the waste materials is too large, so that burrs on corners are too many, and the corners are not flat can be effectively avoided during follow-up cutting.

Description

Technical Field

[0001] The invention relates to the technical field of removing overlapping waste, and in particular to a process for reducing overlapping waste in thick material stamping. Background Art

[0002] In the process of cutting thick materials, traditional punching methods often face great challenges due to the large thickness of the materials. Especially when using ordinary stamping processes, thick materials are prone to chipping or collapse when subjected to punching pressure. This is because thick materials have high toughness and deformation resistance, and large stress concentration will be generated inside the material during punching, leading to local fractures, chipping, or edge fragmentation. This situation not only affects the cutting accuracy and surface quality, but may also cause product scrapping or increase the difficulty of subsequent processing, significantly reducing production efficiency.

[0003] In general, in order to ensure processing quality, the width of the stamping overlap of thick materials is often increased. The increase in width often leads to a large amount of waste and waste of resources.

[0004] If the scrap is too narrow when punching thick materials, it will be pulled obliquely during the punching process. In this way, the scrap is not cut off but pulled apart. The products made in this way have large edge burrs, large collapsed angles, non-straight edges and corners, and the mold is easily worn.

[0005] Therefore, there is still a need for a process that can reduce the generation of overlapping waste and maintain processing quality.

[0006] In order to solve these problems, an improved cutting process is urgently needed, which can save materials and not affect the blanking effect. Summary of the invention

[0007] The present invention provides a process for reducing the overlap waste of thick material stamping to solve the above problem.

[0008] The purpose of the present invention is achieved by the following technical solutions:

[0009] A process for reducing lap waste in thick material stamping, comprising:

[0010] Providing a thick material strip, and punching positioning holes in the thick material strip in sequence;

[0011] Punching and blanking materials between adjacent positioning holes on the thick material strip to form a continuous pre-bracket, wherein the length from the top end to the bottom end of the pre-bracket is the width of the thick material strip;

[0012] At one end of a continuous pre-support, the corners of the pre-support are punched out multiple times according to a preset shape, so that the corners are flattened and then cut to form a support.

[0013] In one embodiment, the multiple punching according to the preset shape includes:

[0014] The corners of the thick material strip at the same position are punched with different thicknesses in sequence according to the preset bracket shape to extend the corners and reduce the thickness-width ratio of the corners;

[0015] Remove the edges and corners that have reached a preset thickness.

[0016] In one embodiment, the sequentially stamping different thicknesses comprises:

[0017] The corners are first punched so that the thickness of the corners is 0.625 times the thickness of the thick material strip;

[0018] Then the corners are punched first so that the thickness of the corners becomes 0.375 times the thickness of the thick material strip;

[0019] The third time, the corners are punched first, so that the thickness of the corners becomes 0.375 times the thickness of the thick material strip.

[0020] In one embodiment, when the corner is punched, the corner extends in a direction away from the bracket.

[0021] In one embodiment, the punching shape of the blade of each knife in the sequential punching on the thick material strip is arc or sawtooth.

[0022] In one embodiment, the sequential stamping method is static stamping or vibration stamping.

[0023] In one embodiment, flattening the corners and then cutting to form a bracket includes:

[0024] cutting the corners of the pre-support;

[0025] Then the connecting sections between the continuous pre-stents are cut to form stents.

[0026] Compared with the prior art, the beneficial effects of the present invention include at least:

[0027] By conveying the thick material strip under the conveyor device to the bottom of the large hole device, the thick material strip is first punched, and then positioning holes are formed on the punched material strip to facilitate confirmation of the preset bracket spacing. Then the corners of the top and bottom of the bracket are punched multiple times, and the high-thickness material strip is first punched into corners with smaller thickness, and then finally thinned, and then the low-thickness corners are cut to remove the corners. By thinning the thickness of the material strip first, the subsequent cutting can effectively avoid excessive burrs and uneven corners caused by excessive cutting thickness. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flowchart of a process for removing waste material from thick material stamping overlap according to an embodiment of the present invention;

[0029] Figure 2 It is a schematic diagram of a thick material structure using a removal process according to an embodiment of the present invention.

[0030] In the figure: 1. thick material strip; 2. positioning hole; 3. pre-bracket; 4. corner; 5. bracket. DETAILED DESCRIPTION

[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided to make the present invention more comprehensive and complete and to fully convey the concepts of example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0032] The words expressing positions and directions described in the present invention are all explained with reference to the accompanying drawings as examples, but they can be changed as needed, and all such changes are included in the protection scope of the present invention.

[0033] Reference Figure 1 and 2 The present invention provides a process for reducing the overlap waste of thick material stamping, comprising:

[0034] A thick material strip 1 is provided, and positioning holes 2 are formed on the thick material strip 1 at equal intervals. For example, the punch and die positions are set on the stamping equipment so that holes can be punched at equal intervals on the steel plate strip. The equipment is adjusted so that the punch can punch a round hole with a diameter of 10 mm on one side or in the middle of the strip at a distance of 50 mm. The setting of the positioning holes 2 can greatly improve the stability and accuracy of the thick material strip 1 in complex processing, making the entire production process smoother and the product quality more reliable.

[0035] The adjacent positioning holes 2 on the thick material strip 1 are blanked to form a continuous pre-bracket 3, and the length from the top to the bottom of the pre-bracket 3 is the width of the thick material strip 1. The blanking cutter head here will not blank the top and bottom parts of the bracket 5, and the top and bottom will not cause the corners 4 to collapse due to too small a cutting amount, resulting in blanking fracture.

[0036] At one end of the continuous pre-bracket 3, the corners 4 of the pre-bracket 3 are punched out multiple times according to the preset shape, so that the corners 4 are flattened and then cut to form the bracket 5. The thickness of the corners 4 is punched and extended to a smaller thickness by multiple punching, and then the thin corners 4 are cut, and finally the excess corners 4 are cut to remove. When the material strip with too thick size is removed by a single cutting, burrs or broken corners are avoided at the top and bottom corners 4 of the bracket 5.

[0037] Preferably, the multiple punching according to the preset shape includes:

[0038] The corners 4 at the same position of the thick material strip 1 are punched with different thicknesses in sequence according to the preset shape of the bracket 5, so that the thickness and width ratio of the corners 4 are reduced. Through multiple punching, the thickness of the corners 4 is punched to a certain thickness each time. The number of punchings can also be divided into multiple punchings according to the thickness. Multiple punchings can reduce the high-thickness corners 4 to low-thickness and large-area corners 4. Then the final cutting is convenient to ensure that the corners 4 are cut smoothly.

[0039] The edges and corners 4 that have reached a preset thickness are cut off and removed.

[0040] Preferably, the sequentially stamping different thicknesses comprises:

[0041] The corners 4 are punched first, so that the thickness of the corners 4 becomes 0.625 times the thickness of the thick material strip 1 .

[0042] The corners 4 are then punched out first, so that the thickness of the corners 4 becomes 0.375 times the thickness of the thick material strip 1 .

[0043] The corner 4 is punched for the third time, so that the thickness of the corner 4 becomes 0.375 times the thickness of the thick material strip 1. According to experimental tests, when the thickness of the thick material strip 1 is less than or equal to 4 mm, the thickness of the corner 4 is diffused in the other three directions by punching in sequence using the ductility of the metal, and reaches the final ductile thickness, and then the corner 4 of the thick material strip 1 with reduced thickness is removed using different cutting tools, ensuring that the edges of the top and bottom ends of the processed bracket 5 are smooth and burr-free to improve the processing quality.

[0044] Preferably, when the corner 4 is punched, the corner 4 extends in a direction away from the bracket 5. The shape of one side of the punched cutter head is the same as the edge shape of the top or bottom end of the bracket 5, avoiding deformation of the corner 4 at this position.

[0045] Preferably, the punching shape of each blade of the punching knife on the thick material strip 1 is arc or serrated. The punching blade can be in a continuous wave shape or a smooth arc shape. According to experimental verification, the arc-shaped blade shape can ensure that the corner 4 can be uniformly extended and deformed during punching, which is convenient for subsequent cutting. The wavy blade can reduce the size thickness to a large extent in a single time.

[0046] Preferably, the sequential stamping method is static stamping or vibration stamping, wherein the stamping method can be a smooth stamping method or a pulse stamping method, and the above two methods can be selected according to actual use.

[0047] Preferably, the corners 4 are flattened and then cut to form the bracket 5, which includes:

[0048] The corners 4 of the pre-support 3 are cut. The corners 4 of the pre-support 3 are punched sequentially by a plurality of punches, so that the corners 4 are first extended and then cut.

[0049] Then the connecting sections between the continuous pre-supports 3 are cut to form the support 5. The connecting parts between the pre-supports 3 are cut by another cutting tool, and finally the material is blanked to form the support 5 with smooth edges at the top and bottom ends.

[0050] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, substitute and modify the above embodiments within the scope of the invention without departing from the principles and purpose of the present invention. All such changes should fall within the scope of protection of the claims of the present invention.

Claims

1. A process for reducing the overlap waste of thick material stamping, characterized in that: include: Providing a thick material strip, and punching positioning holes in the thick material strip at equal intervals in sequence; Punching and blanking materials between adjacent positioning holes on the thick material strip to form a continuous pre-bracket, wherein the length from the top end to the bottom end of the pre-bracket is the width of the thick material strip; At one end of a continuous pre-support, the corners of the pre-support are punched out multiple times according to a preset shape, so that the corners are flattened and then cut to form a support.

2. The process according to claim 1, characterized in that The multiple punching according to the preset shape includes: The corners of the thick material strip at the same position are punched with different thicknesses in sequence according to the preset bracket shape to extend the corners and reduce the thickness-width ratio of the corners; Remove the edges and corners that have reached a preset thickness.

3. The process according to claim 2, characterized in that The sequential stamping of different thicknesses comprises: The corners are first punched so that the thickness of the corners is 0.625 times the thickness of the thick material strip; Then the corners are punched first so that the thickness of the corners becomes 0.375 times the thickness of the thick material strip; The third time, the corners are punched first, so that the thickness of the corners becomes 0.375 times the thickness of the thick material strip.

4. The process according to claim 3, characterized in that When the corner is punched, the corner extends in a direction away from the bracket.

5. The process according to claim 4, characterized in that The punching shape of the blade of each knife in the sequential punching on the thick material strip is arc or sawtooth.

6. The process according to claim 4, characterized in that The sequential stamping method is static stamping or vibration stamping.

7. The process according to claim 1, characterized in that The corners are flattened and then cut to form a bracket including: cutting the corners of the pre-support; Then the connecting sections between the continuous pre-stents are cut to form stents.

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