Material cutting device to prevent the cutting surface from tilting

Abstract

The purpose of this utility model is to disclose a cutting device for preventing the cutting surface from tilting, relating to the field of metal sheet cutting technology, including an upper die assembly and a lower die assembly; the upper die assembly includes a punch, the punch having a first inclined surface and a right-angle cutting surface; the lower die assembly includes a fixing block and a U-shaped groove disposed on the top of the fixing block, the two sides of the U-shaped groove are respectively provided with a first support surface and a second support surface flush with the horizontal top surface of the U-shaped groove; the first end of the metal sheet is supported on the first support surface, the second end of the metal sheet is suspended, the strip is supported on the second support surface, and the connecting surface of the metal sheet and the strip is aligned with the vertical surface formed by the first support surface and the U-shaped groove; the right-angle cutting surface is aligned with the connecting surface to cut the metal sheet. Technical effect: the metal sheet is supported on the first support surface, and the vertical surface, connecting surface and vertical surface of the punch are on the same vertical surface, effectively preventing the formation of a cutting inclined surface when cutting the metal sheet.

Description

Technical Field

[0001] This utility model relates to the field of metal sheet cutting technology, and in particular to a cutting device that prevents the cutting surface from tilting. Background Technology

[0002] With the rapid development of the 3C electronics and precision machining industries, the shape design of metal sheets is becoming increasingly complex and diverse. Precisely cutting metal sheets of a specific thickness from the strip is one of the key processes in this precision forming process. However, as the thickness of the metal sheet increases, a noticeable bevel often appears on the cut surface, and this technical challenge has become a significant defect affecting product quality.

[0003] The fundamental reason for the beveled surface during cutting lies in the uneven distribution of shear force. Ideally, when the tool contacts the material, the stress should act evenly across the entire cut surface. However, for thicker materials, the pressure applied by the tool from top to bottom creates a stress gradient within the material: the upper surface bears the maximum shear force first and begins to deform, while the stress transmission on the lower surface is delayed and attenuated. This time and force difference in stress transmission causes the material to not be cut simultaneously, but rather to be in a state where the upper part moves downwards while the lower part is not completely separated, ultimately forming a beveled cut surface. The physical properties of the material itself exacerbate this phenomenon. Thicker metal sheets have higher strength and toughness, generating greater resilience to resist tool penetration during cutting.

[0004] In view of this, it is necessary to develop a material cutting device that prevents the cutting surface from tilting. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the purpose of this utility model is to disclose a material cutting device that prevents the cutting surface from tilting.

[0006] To achieve the above-mentioned objectives, this utility model provides a material cutting device for preventing the cutting surface from tilting, including an upper mold assembly and a lower mold assembly;

[0007] The upper die assembly includes a punch, which has a first inclined surface and a right-angled cut surface;

[0008] The lower mold assembly includes a fixing block and a U-shaped groove disposed on the top of the fixing block. A first support surface and a second support surface, which are flush with the horizontal top surface of the U-shaped groove, are respectively disposed on both sides of the U-shaped groove.

[0009] The first end of the metal sheet is supported on the first support surface, the second end of the metal sheet is suspended, the strip is supported on the second support surface, and the connecting surfaces of the metal sheet and the strip are aligned with the vertical surface formed by the first support surface and the U-shaped groove.

[0010] During the downward punching process, the right-angle cutting surface is aligned with the connecting surface to cut the metal sheet.

[0011] Preferably, when the punch breaks the metal sheet, the first inclined surface avoids the U-shaped groove.

[0012] Preferably, the angle between the first inclined plane and the vertical plane is 30°-45°.

[0013] Preferably, the second end of the metal sheet has a bent portion.

[0014] Preferably, a second inclined surface is provided on the side of the first support surface, and the bent portion is aligned with the second inclined surface.

[0015] Preferably, after the punch breaks the metal sheet, the metal sheet falls along the second inclined plane under the action of gravity.

[0016] Preferably, the angle between the second inclined plane and the vertical plane is 30°-45°.

[0017] Preferably, one side of the second inclined plane is a space for the metal sheet to fall.

[0018] Preferably, the thickness of the metal sheet is 0.1mm-2.0mm.

[0019] Preferably, the thickness of the metal sheet is 1.0 mm to 2.0 mm.

[0020] Compared with the prior art, the technical effects of this utility model are as follows:

[0021] In this invention, the metal sheet to be cut is supported on a first support surface, while the strip is supported on a second support surface. A U-shaped groove is formed between the first and second support surfaces. The vertical surface formed by the U-shaped groove and the first support surface is aligned with the connecting surface of the metal sheet and the strip. The vertical surface of the right-angle cutting surface of the punch is aligned with the connecting surface and cuts the metal sheet. With the metal sheet supported on the first support surface, the vertical surface of the right-angle cutting surface of the punch, the connecting surface, and the vertical surface are all on the same vertical surface, achieving vertical shearing of the connecting surface and effectively preventing the formation of a cutting bevel when cutting the metal sheet. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1It is a three-dimensional structural schematic diagram of the blanking device for preventing the cutting surface from tilting in the present utility model.

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the punch, fixed block and metal sheet in the present utility model.

[0025] Figure 3 It is the present utility model Figure 2 The enlarged structural schematic diagram at position A.

[0026] Figure 4 It is a three-dimensional state schematic diagram when the punch in the present utility model punches through the metal sheet.

[0027] Figure 5 It is a structural schematic diagram of the cooperation between the punch and the U-shaped groove when the metal sheet is punched through in the present utility model.

[0028] Among them, 1. Upper die assembly; 2. Lower die assembly; 21. Fixed block; 22. U-shaped groove; 221. Vertical surface; 23. First support surface; 24. Second support surface; 25. Second inclined surface; 3. Punch; 31. First inclined surface; 32. Right-angle cutting surface; 321. Vertical plane; 322. Horizontal plane; 4. Metal sheet; 41. First end; 42. Second end; 43. Connection surface; 44. Bending part; 5. Strip; 6. Metal sheet dropping space. Specific embodiments

[0029] The present utility model will be described in detail below in conjunction with the various embodiments shown in the drawings. However, it should be noted that these embodiments are not limitations on the present utility model, and any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present utility model.

[0030] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation on the present utility model.

[0031] Embodiment 1

[0032] Refer Figures 1 to 5 As shown, this embodiment discloses a specific implementation manner of a blanking device for preventing the cutting surface from tilting.

[0033] This embodiment provides a material cutting device to prevent the cutting surface from tilting. Figures 1 to 5 As shown, the assembly includes an upper die assembly 1 and a lower die assembly 2. The upper die assembly 1 includes a punch 3, which has a first inclined surface 31 and a right-angled cutting surface 32. The right-angled cutting surface 32 includes a vertical surface 321 and a horizontal surface 322, and the first inclined surface 31 and the horizontal surface 322 are connected. The lower die assembly 2 includes a fixing block 21 and a U-shaped groove 22 disposed on the top of the fixing block 21. A first support surface 23 and a second support surface 24, which are flush with the horizontal top surface of the U-shaped groove 22, are respectively disposed on both sides of the U-shaped groove 22. The thickness of the metal sheet 4 is... The thickness of the metal sheet is preferably 1.0mm-2.0mm, with a range of 0.1mm-2.0mm. The first end 41 of the metal sheet 4 is supported on the first support surface 23, and the second end 42 of the metal sheet 4 is suspended. The strip 5 is supported on the second support surface 24. The connecting surface 43 of the metal sheet 4 and the strip 5 is aligned with the vertical surface 221 formed by the first support surface 23 and the U-shaped groove 22. During the downward punching process of the punch 3, the vertical surface 321 of the right-angle cutting surface 32 is aligned with the connecting surface 43 and cuts the metal sheet 4.

[0034] Specifically, in the prior art, when cutting a metal sheet, the uneven deformation of the two sides of the metal sheet easily leads to a beveled cut surface, resulting in defects in the metal sheet. To overcome this defect, see [reference needed]. Figures 1 to 5 In this embodiment, the metal sheet 4 to be cut is supported on the first support surface 23, while the strip 5 is supported on the second support surface 24. A U-shaped groove 22 is formed between the first support surface 23 and the second support surface 24. The vertical surface 221 formed by the U-shaped groove 22 and the first support surface 23 is aligned with the connecting surface 43 of the metal sheet 4 and the strip 5. The vertical surface 321 of the right-angle cutting surface 32 of the punch 3 is aligned with the connecting surface 43 and cuts the metal sheet 4. With the metal sheet 4 supported on the first support surface 23 and provided with rigid support, the vertical surface 321 of the right-angle cutting surface 32 of the punch 3, the connecting surface 43 and the vertical surface 221 are on the same vertical surface, realizing vertical shearing of the connecting surface 43, effectively preventing the formation of a cutting slope when cutting the metal sheet 4, especially when cutting a metal sheet 4 with a thickness of 1.0mm-2.0mm, ensuring that its cutting surface does not have a slope.

[0035] See Figure 5 When the punch 3 breaks the metal sheet 4, the first inclined surface 31 avoids the U-shaped groove 22. The angle between the first inclined surface 31 and the vertical surface is 30°-45°, preferably 45°. See also Figures 1 to 5The second end of the metal sheet 4 has a bent portion 44. After the metal sheet 4 is cut, in order to ensure that the metal sheet 4 falls off in time, a second inclined surface 25 is provided on the side of the first support surface 23. The bent portion 44 is aligned with the second inclined surface 25. The angle between the second inclined surface 25 and the vertical surface is 30°-45°, preferably 45°. One side of the second inclined surface 25 is a metal sheet falling space 6. After the punch 3 cuts the metal sheet 4, the metal sheet 4 falls along the second inclined surface 25 under the action of gravity and falls into the metal sheet falling space 6.

[0036] In this embodiment, the vertical surface 321, the connecting surface 43, and the vertical surface 221 of the right-angle cutting surface 32 of the punch 3 are on the same vertical surface, realizing vertical shearing of the connecting surface 43. This effectively prevents the formation of a cutting slope when cutting the metal sheet 4. After cutting the metal sheet 4, the metal sheet 4 falls along the second slope 25 into the metal sheet falling space 6 under the action of gravity. Cutting the metal sheet 4 achieves a cutting surface without slope and high material dropping efficiency.

Claims

1. A cutting device for preventing the inclination of a cutting surface, characterized in that, Includes upper mold assembly and lower mold assembly; The upper die assembly includes a punch, which has a first inclined surface and a right-angled cut surface; The lower mold assembly includes a fixing block and a U-shaped groove disposed on the top of the fixing block. A first support surface and a second support surface, which are flush with the horizontal top surface of the U-shaped groove, are respectively disposed on both sides of the U-shaped groove. The first end of the metal sheet is supported on the first support surface, the second end of the metal sheet is suspended, the strip is supported on the second support surface, and the connecting surfaces of the metal sheet and the strip are aligned with the vertical surface formed by the first support surface and the U-shaped groove. During the downward punching process, the right-angle cutting surface is aligned with the connecting surface to cut the metal sheet.

2. The apparatus of claim 1 wherein, When the punch breaks the metal sheet, the first inclined surface avoids the U-shaped groove.

3. The apparatus of claim 1 wherein, The angle between the first inclined plane and the vertical plane is 30°-45°.

4. The apparatus of claim 1 wherein, The second end of the metal sheet has a bent portion.

5. The apparatus of claim 4 wherein, A second inclined surface is provided on the side of the first support surface, and the bent portion is aligned with the second inclined surface.

6. The apparatus of claim 5 wherein the cutting surface is a circular saw blade. After the punch breaks the metal sheet, the metal sheet falls along the second inclined plane under the action of gravity.

7. The apparatus of claim 6 wherein, The angle between the second inclined plane and the vertical plane is 30°-45°.

8. The material cutting device for preventing the cutting surface from tilting as described in claim 7, characterized in that, One side of the second slope is a space for the metal sheet to fall.

9. The apparatus of any one of claims 1-8, wherein, The thickness of the metal sheet is 0.1mm-2.0mm.

10. The apparatus of claim 9 wherein the cutting surface is a circular saw blade. The thickness of the metal sheet is 1.0mm-2.0mm.

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