T-shaped sheet metal mold blanking die

Abstract

This invention proposes a blanking die for a T-shaped sheet. By setting a straight wall and an inclined wall on the side wall below the cutting edge of the die, when the stress is released in various parts of the T-shaped sheet during the blanking process, a gap is generated between the inclined wall and each part of the T-shaped sheet, and the gap gradually increases. The stress is released to the gap, causing deformation at the gap where the T-shaped sheet's external dimensions are less critical. This reduces the outward extension of stress at the straight wall, making the critical dimensions more accurate. It also reduces the friction between the outer edge of the T-shaped sheet and the straight wall, thereby mitigating the problem of edge roughening of the product. The presence of the inclined wall also reduces the contact area between the T-shaped sheet and the modular die, as well as the pressure applied to the contact area, thus reducing the possibility of the modular die breaking.

Description

Technical Field

[0001] This invention relates to the field of stamping dies, and more specifically to a blanking die for a T-shaped sheet die. Background Technology

[0002] Currently, a mold for mass production is needed to produce a T-shaped sheet. The existing T-shaped sheet blanking dies are prone to cracking. There are two common die structures: integral die and modular die. The existing modular die combines multiple modular blocks into the die fixing plate at room temperature. At room temperature, it can only be fitted with a clearance, which results in gaps between the modular blocks. After the T-shaped sheet is stamped, stress is released to the die. During stamping, the cutting edges between the modular blocks will collide and squeeze each other, which also makes the cutting edges prone to breakage. Furthermore, due to the existence of gaps, the dimensional accuracy of key parts of the product cannot be controlled. Compared to spliced ​​dies, integral dies offer higher precision. While the cutting edge is less prone to breakage compared to spliced ​​dies, the stress released after stamping makes the die more susceptible to cracking. Repairs often involve replacing the entire die, which is more expensive than repairing a spliced ​​die. Furthermore, due to the difficulty and cost of machining, the cutting edge in an integral die cannot be adapted to the shape of the product by adjusting the blanking angle, leading to issues such as rough edges or easy breakage of the cutting edge. Summary of the Invention

[0003] The problem to be solved by the present invention is to provide a blanking die for a T-shaped piece mold. By setting a straight wall and an inclined wall on the side wall below the cutting edge of the die, when the T-shaped piece releases stress, the inclined wall gradually tilts from top to bottom and creates a gap between the T-shaped piece and a part of the T-shaped piece, and the gap gradually increases, guiding the stress to be released to the gap, thus solving the problems of rough edges on the product, overall die breakage, or die cutting edge damage.

[0004] The technical solution adopted by the present invention to solve the above problems is as follows: a T-shaped piece die blanking die, including a die fixing plate, a modular die, and a T-shaped piece. The T-shaped piece includes a first arc-shaped portion, a second arc-shaped portion, and a groove portion. The first arc-shaped portion is disposed at one end of the T-shaped piece, and the second arc-shaped portion is disposed at the other end of the T-shaped piece. The groove portion is mirror-distributed on both sides of the T-shaped piece along the center line. The groove portion has a bottom wall portion and inclined wall portions and side wall portions located on both sides of the bottom wall portion. The two inclined wall portions are connected to the two ends of the first arc-shaped portion, and the two side wall portions are connected to the two ends of the second arc-shaped portion. The modular die is embedded in the die fixing plate with an interference fit on the outer wall using a heat fitting process. The modular die includes a first splicing block and a second splicing block located at both ends of the modular die, as well as two side wall splicing blocks located on both sides of the die in mirror image. The first splicing block is provided with a first blade assembly for forming the first arc-shaped part. The first blade assembly includes multiple straight wall sections connected in sequence. During the blanking process, the first arc-shaped part abuts against the straight wall of the first blade assembly. The second splicing block is provided with a second blade assembly for forming the second arc-shaped part. The second blade assembly includes a straight wall and an inclined wall connected in sequence. During the blanking process, the second arc-shaped part abuts against the straight wall of the second blade assembly, and a gap is generated between it and the inclined wall of the second blade assembly, and the gap gradually increases. The two sidewall splicing blocks are used to form the grooves on both sides of the T-shaped piece. The sidewall splicing blocks include a third blade group, a fourth blade group, and a fifth blade group that are continuously arranged. The third cutting edge is used to form the inclined wall portion. The third cutting edge is the inclined wall portion. During the blanking process, a gap is generated between the inclined wall portion and the third cutting edge, and the gap gradually increases. The fourth cutting edge is used to form the bottom wall portion. The fourth cutting edge includes a straight wall and an inclined wall connected in sequence. During the blanking process, the bottom wall portion continuously abuts against the straight wall of the fourth cutting edge, and a gap is generated between the bottom wall portion and the inclined wall of the fourth cutting edge, and the gap gradually increases.

[0005] The fifth cutting edge group is used to form the side wall portion. The fifth cutting edge group includes a straight wall and an inclined wall connected in sequence. During the blanking process, the side wall portion continuously abuts against the straight wall of the fifth cutting edge group, and a gap is generated between the side wall portion and the inclined wall of the fifth cutting edge group, and the gap gradually increases.

[0006] Compared with existing technologies, this invention, by setting a straight wall and an inclined wall on the sidewall below the cutting edge of the die, allows for stress release in different parts of the T-shaped piece during blanking. As the inclined wall and the different parts of the T-shaped piece release stress, and this gap gradually increases, the stress is released towards the gap. This causes deformation at the gap where the T-shaped piece's dimensional requirements are lower, thereby reducing the pressure exerted on the straight wall by the stress and the amount of deformation. This results in more accurate critical dimensions and reduces the friction between the outer edge of the T-shaped piece and the straight wall, thus mitigating the problem of edge roughening on the product. The presence of gaps reduces the contact area between the T-shaped piece and the modular die, thus reducing the possibility of the modular die breaking. On the other hand, the modular die uses a thermoforming process with an interference fit on the outer wall, which is embedded in the die fixing plate. Compared with the whole die, the maintenance cost is lower, only the parts need to be replaced, and the processing difficulty is lower. Compared with the room temperature parts, the thermoforming interference fit can increase the tightness between the parts, reduce the mutual movement between the parts during blanking, improve the cutting accuracy, and also reduce the possibility of the die breaking due to impact with the T-shaped piece.

[0007] Preferably, the first arc-shaped portion is composed of a first arc-shaped connecting surface, a first arc-shaped surface, and a second arc-shaped connecting surface connected in sequence, wherein the first blade group includes a first wall, a second wall, and a third wall connected in sequence, the first wall, the second wall, and the third wall are straight walls, the first arc-shaped connecting surface corresponds to the first wall, the first arc-shaped surface corresponds to the second wall, and the second arc-shaped connecting surface corresponds to the third wall.

[0008] Preferably, the lower part of the straight wall of the first wall and the third wall is provided with two sections of continuous inclined wall. The inclination angle of the first section of the inclined wall, which is inclined outward along the material dropping direction from top to bottom, is smaller than that of the second section of the inclined wall. In order to ensure the normal use of the product, when the first arc-shaped connecting surface and the second arc-shaped connecting surface are located on this inclined surface, the overall tension of the T-shaped piece is larger. The smaller gap will make the shape change of the first arc-shaped connecting surface and the second arc-shaped connecting surface smaller, and at the same time release the tension to the gaps in other positions, so that the deformation of the first arc-shaped connecting surface and the second arc-shaped connecting surface relative to the overall T-shaped piece is more uniform. The angle of the second section is larger than that of the first section, which can better release the tension. When the first arc-shaped connecting surface and the second arc-shaped connecting surface are located on this inclined surface, most of the overall tension of the T-shaped piece is released, and the tension is released more rapidly at the first arc-shaped connecting surface and the second arc-shaped connecting surface.

[0009] Preferably, the second arc-shaped portion is composed of a first waste surface, a second arc-shaped surface, an arc-shaped transition surface, a third arc-shaped surface, and a second waste surface connected in sequence. The second blade assembly includes a fourth wall, a fifth wall, a sixth wall, a seventh wall, and an eighth wall connected in sequence. The fourth wall, the sixth wall, and the eighth wall are inclined walls that slope outward along the material dropping direction. The fifth wall and the seventh wall are straight walls. The first waste surface corresponds to the fourth wall. The second arc-shaped surface abuts against the fifth wall. The arc-shaped transition surface corresponds to the sixth wall. The third arc-shaped surface abuts against the seventh wall. The second waste surface corresponds to the eighth wall.

[0010] Preferably, the fourth and eighth walls are two-section continuous inclined walls. The angle of the first section, which slopes outward along the material dropping direction from top to bottom, is smaller than the angle of the second section. The first section's inclination angle is designed to ensure normal product use. When the first and second waste surfaces are located on this inclined surface, the overall tension of the T-shaped piece is relatively large. The smaller gap will result in less change in the shape of the first and second waste surfaces and release tension to gaps in other positions, making the deformation of the first and second waste surfaces relative to the overall T-shaped piece more uniform. The angle of the second section is larger than that of the first section, which can better release tension. When the first and second waste surfaces are located on this inclined surface, most of the overall tension of the T-shaped piece is released, and the tension is released more rapidly on the first and second waste surfaces.

[0011] Preferably, the third blade assembly includes a ninth wall, which is a two-section continuous inclined wall. The first section, from top to bottom, has an outward inclined wall angle that is smaller than that of the second section. The first section's inclination angle is designed to ensure normal product use. When the inclined wall is located on this inclined surface, the overall tension of the T-shaped piece is relatively large. The smaller gap will result in less change in the shape of the inclined wall and release tension to gaps in other positions, making the deformation of the ninth wall relative to the overall T-shaped piece more uniform. The second section's angle is larger than the first section's angle, which can better release tension. When the inclined wall is located on this inclined surface, most of the overall tension of the T-shaped piece is released, and the tension is released more rapidly on the inclined wall.

[0012] Preferably, the bottom wall is composed of a first clamping transition surface, a first clamping surface, and a second clamping transition surface connected in sequence. The fourth blade assembly includes a tenth wall, an eleventh wall, and a twelfth wall. The tenth wall and the twelfth wall are inclined walls that slope outward along the material dropping direction. The eleventh wall is a straight wall. The tenth wall corresponds to the first clamping transition surface, the eleventh wall corresponds to the first clamping surface, and the twelfth wall corresponds to the second clamping transition surface.

[0013] Preferably, the sidewall portion is composed of a third waste section, a second clamping surface, and a third clamping transition surface. The fifth blade group includes a thirteenth wall, a fourteenth wall, and a fifteenth wall. The thirteenth and fifteenth walls are inclined walls that slope outward along the material dropping direction, and the fourteenth wall is a straight wall. The thirteenth wall corresponds to the third waste section, the fourteenth wall abuts against the second clamping surface, and the fifteenth wall corresponds to the third clamping transition surface. Attached Figure Description

[0014] Figure 1 This is a top view of the present invention; Figure 2 This is a top view of the first splicing block of the present invention; Figure 3 This is a top view of the T-shaped piece of the present invention; Figure 4 This is a top view of the second splicing block of the present invention; Figure 5 This is a top view of the T-shaped piece of the present invention; Figure 6 This is a top view of the sidewall splicing block of the present invention; Figure 7 This is a top view of the T-shaped piece of the present invention; Diagram: 1. Modular die; 1.1. First connecting block; 1.11. First cutting edge group; 1.11.1. First wall; 1.11.2. Second wall; 1.11.3. Third wall; 1.2. Second connecting block; 1.21. Second cutting edge group; 1.21.1. Fourth wall; 1.21.2. Fifth wall; 1.21.3. Sixth wall; 1.21.4. Seventh wall; 1.21.5. Eighth wall; 1.3. Side wall connecting block; 1.31. Third cutting edge group; 1.31.1. Ninth wall; 1.41. Fourth cutting edge group; 1.41.1. Tenth wall; 1.41.2. Eleventh wall; 1.41.3. Twelfth wall; 1.51. Fifth cutting edge group; 1.51.1. Thirteenth wall; 1.51.2. Fourteenth wall; 1.51.3. 15. Wall; 2. T-shaped piece; 2.1. First arc-shaped part; 2.1.1. First arc-shaped surface; 2.1.2. First arc-shaped connecting surface; 2.1.3. Second arc-shaped connecting surface; 2.2. Second arc-shaped part; 2.2.1. First waste surface; 2.2.2. Second arc-shaped surface; 2.2.3. Arc-shaped transition surface; 2.2.4. Third arc-shaped surface; 2.2.5. Second waste surface; 2.3. Groove part; 2.31. Bottom wall part; 2.31.1. First clamping transition surface; 2.31.2. First clamping surface; 2.31.3. Second clamping transition surface; 2.32. Sloping wall part; 2.33. Side wall part; 2.33.1. Third waste section; 2.33.2. Second clamping surface; 2.33.3. Third clamping transition surface; 3. Die fixing plate. Detailed Implementation

[0015] Before detailing any embodiment of the invention, it should be understood that the invention, in its application, is not limited to the details of the construction and arrangement of the components set forth in the following description or illustrated in the following figures. The invention can have other embodiments and can be practiced or carried out in various ways. Furthermore, it should be understood that the wording and terminology used herein are for descriptive purposes and should not be considered limiting. The use of “comprising” or “having” and variations thereof is intended to cover the items set forth below and their equivalents, as well as any additional items. Unless otherwise specified or limited, the terms “installation,” “connection,” “support,” and “linkage,” and variations thereof are used broadly and cover both direct and indirect installation, connection, support, and linking. Moreover, “connection” and “linkage” are not limited to physical or mechanical connections or links.

[0016] Furthermore, firstly, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limiting this invention. Secondly, the term "a" should be understood as "at least one" or "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. The term "a" should not be construed as a limitation on the quantity.

[0017] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments, and any variations or modifications may be made to the implementation of the present invention without departing from the stated principles.

[0018] The embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0019] Please refer to Figure 1 The modular die 1 is embedded in the die fixing plate 3 with an interference fit on the outer wall using a hot-fitting process. The interference fit of the hot-fitting process makes the multiple blocks fit together more tightly, preventing the blocks from moving around and affecting the size and outer edge flatness.

[0020] The structure of the T-shaped piece 2 includes a first arc-shaped portion 2.1 and a second arc-shaped portion 2.2, which are located at both ends of the T-shaped piece 2, respectively. Recessed portions 2.3 are mirror images of each other on both sides of the T-shaped piece 2. Each recessed portion 2.3 has a bottom wall portion 2.31 and inclined wall portions 2.32 and side wall portions 2.33 located on both sides of the bottom wall portion 2.31. The inclined wall portions 2.32 are connected to both ends of the first arc-shaped portion 2.1, while the side wall portions 2.33 are connected to both ends of the second arc-shaped portion 2.2.

[0021] The modular die 1 includes a first splicing block 1.1 and a second splicing block 1.2 located at both ends, and two side wall splicing blocks 1.3 mirrored along the centerline of the T-shaped piece 2.

[0022] Please refer to Figure 2 , 3The first splicing block 1.1 has a first blade assembly 1.11 for forming the first arc-shaped part 2.1, including a first wall 1.11.1, a second wall 1.11.2, and a third wall 1.11.3. The second wall 1.11.2 is a straight wall, while the upper parts of the first wall 1.11.1 and the third wall 1.11.3 are straight walls, and the lower part of the first section from top to bottom is an inwardly inclined wall of 6′, and the second section is an inwardly inclined wall of 1°. The first arc-shaped part 2.1 includes a first arc-shaped connecting surface 2.1.2, a first arc-shaped surface 2.1.1, and a second arc-shaped connecting surface 2.1.3 arranged sequentially. During blanking, the first wall 1.11.1 corresponds to the first arc-shaped connecting surface 2.1.2, the second wall 1.11.2 corresponds to the first arc-shaped surface 2.1.1, and the third wall 1.11.3 corresponds to the second arc-shaped connecting surface 2.1.3.

[0023] Please refer to Figure 4 , 5 The second splicing block 1.2 is provided with a second blade assembly 1.21 for forming the second arc-shaped part 2.2, including a fourth wall 1.21.1, a fifth wall 1.21.2, a sixth wall 1.21.3, a seventh wall 1.21.4, and an eighth wall 1.21.5. The fifth wall 1.21.2 and the seventh wall 1.21.4 are straight walls, while the fourth wall 1.21.1 and the eighth wall 1.21.5 are two-section inclined walls, wherein the first section from top to bottom is an inward inclined wall of 6′, the second section is an inward inclined wall of 1°, and the sixth wall 1.21.3 is an inward inclined wall of 4′.

[0024] The second arc-shaped section 2.2 includes a first waste surface 2.2.1, a second arc-shaped surface 2.2.2, an arc-shaped transition surface 2.2.3, a third arc-shaped surface 2.2.4, and a second waste surface 2.2.5 arranged sequentially. During material discharge, the first waste surface 2.2.1 corresponds to the fourth wall 1.21.1, the second arc-shaped surface 2.2.2 abuts against the fifth wall 1.21.2, the arc-shaped transition surface 2.2.3 corresponds to the sixth wall 1.21.3, the third arc-shaped surface 2.2.4 abuts against the seventh wall 1.21.4, and the second waste surface 2.2.5 corresponds to the eighth wall 1.21.5.

[0025] Two sidewall splicing blocks 1.3 are used to form the grooves 2.3 on both sides of the T-shaped piece 2, including a third blade group 1.31, a fourth blade group 1.41 and a fifth blade group 1.51 arranged in succession.

[0026] The third cutting edge group 1.31 is used to form the inclined wall portion 2.32, including the ninth wall 1.31.1, which is a two-section inclined wall. The first section from top to bottom is an inclined wall that is inclined inward by 6′, and the second section is an inclined wall that is inclined inward by 1°. The ninth wall 1.31.1 corresponds to the inclined wall portion 2.32.

[0027] The fourth cutting edge group 1.41 is used to form the bottom wall portion 2.31, including the tenth wall 1.41.1, the eleventh wall 1.41.2 and the twelfth wall 1.41.3, wherein the eleventh wall 1.41.2 is a straight wall, while the tenth wall 1.41.1 and the twelfth wall 1.41.3 are inclined walls that slope inward by 6′. The bottom wall portion 2.31 is composed of a first clamping transition surface 2.31.1, a first clamping surface 2.31.2 and a second clamping transition surface 2.31.3 connected in sequence. The tenth wall 1.41.1 corresponds to the first clamping transition surface 2.31.1, the eleventh wall 1.41.2 corresponds to the first clamping surface 2.31.2, and the twelfth wall 1.41.3 corresponds to the second clamping transition surface 2.31.3.

[0028] The fifth cutting edge group 1.51 is used to form the side wall portion 2.33, including the thirteenth wall 1.51.1, the fourteenth wall 1.51.2, and the fifteenth wall 1.51.3. The fourteenth wall 1.51.2 is a straight wall, while the thirteenth wall 1.51.1 and the fifteenth wall 1.51.3 are inclined walls that slope inward by 6'. The side wall portion 2.33 is composed of the third waste section 2.33.1, the second clamping surface 2.33.2, and the third clamping transition surface 2.33.3. The thirteenth wall 1.51.1 corresponds to the third waste section 2.33.1, the fourteenth wall 1.51.2 abuts against the second clamping surface 2.33.2, and the fifteenth wall 1.51.3 corresponds to the third clamping transition surface 2.33.3.

[0029] The above description only illustrates the preferred embodiments of the present invention and should not be construed as limiting the scope of the claims. The present invention is not limited to the above embodiments, and variations in its specific structure are permitted. All modifications made within the scope of the independent claims of this invention are also within the scope of protection of this invention.

Claims

1. A blanking die for a T-shaped sheet mold, characterized in that: The device includes a die fixing plate (3), a modular die (1), and a T-shaped piece (2). The T-shaped piece (2) includes a first arc-shaped part (2.1), a second arc-shaped part (2.2), and a groove part (2.3). The first arc-shaped part (2.1) is located at one end of the T-shaped piece (2), and the second arc-shaped part (2.2) is located at the other end of the T-shaped piece (2). The groove part (2.3) is mirror-image located on both sides of the T-shaped piece (2) along the center line. The groove part (2.3) has a bottom wall part (2.31) and inclined wall parts (2.32) and side wall parts (2.33) located on both sides of the bottom wall part (2.31). The two inclined wall parts (2.32) are connected to the two ends of the first arc-shaped part (2.1), and the two side wall parts (2.33) are connected to the two ends of the second arc-shaped part (2.2). The modular die (1) is embedded in the die fixing plate (3) with an interference fit on the outer wall using a heat fitting process; The modular die (1) includes a first splicing block (1.1) and a second splicing block (1.2) located at both ends of the modular die (1), and two side wall splicing blocks (1.3) mirror-aligned along the center line of the T-shaped piece; The first splicing block (1.1) is provided with a first blade assembly (1.11) for forming the first arc-shaped part (2.1). The first blade assembly (1.11) includes multiple straight walls connected in sequence. During the blanking process, the first arc-shaped part (2.1) abuts against the straight walls of the first blade assembly (1.11). The second splicing block (1.2) is provided with a second blade assembly (1.21) for forming the second arc-shaped part (2.2). The second blade assembly (1.21) includes a straight wall and an inclined wall connected in sequence. During the blanking process, the second arc-shaped part (2.2) abuts against the straight wall of the second blade assembly (1.21) and a gap is generated between it and the inclined wall of the second blade assembly (1.21). The two sidewall splicing blocks (1.3) are used to form the grooves (2.3) on both sides of the T-shaped piece (2). The sidewall splicing block (1.3) includes a third blade group (1.31), a fourth blade group (1.41), and a fifth blade group (1.51) arranged in succession. The third cutting edge group (1.31) is used to form the inclined wall part (2.32). The third cutting edge group (1.31) is an inclined wall. During the blanking process, a gap is generated between the inclined wall part (2.32) and the third cutting edge group (1.31). The fourth cutting edge group (1.41) is used to form the bottom wall part (2.31). The fourth cutting edge group (1.41) includes a straight wall and an inclined wall connected in sequence. During the blanking process, the bottom wall part (2.31) and the straight wall of the fourth cutting edge group (1.41) continuously abut against each other, and a gap is generated between them. The fifth cutting edge group (1.51) is used to form the side wall portion (2.33). The fifth cutting edge group (1.51) includes a straight wall and an inclined wall connected in sequence. During the blanking process, the side wall portion (2.33) and the straight wall of the fifth cutting edge group (1.51) continuously abut against each other, and a gap is generated between them.

2. The blanking die for a T-shaped sheet mold according to claim 1, characterized in that: The first arc-shaped portion (2.1) is composed of a first arc-shaped connecting surface (2.1.2), a first arc-shaped surface (2.1.1), and a second arc-shaped connecting surface (2.1.3) connected in sequence. The first blade assembly (1.11) includes a first wall (1.11.1), a second wall (1.11.2), and a third wall (1.11.3) connected in sequence. The first wall (1.11.1), the second wall (1.11.2), and the third wall (1.11.3) are straight walls. The first arc-shaped connecting surface (2.1.2) corresponds to the first wall (1.11.1), the first arc-shaped surface (2.1.1) corresponds to the second wall (1.11.2), and the second arc-shaped connecting surface (2.1.3) corresponds to the third wall (1.11.3).

3. The blanking die for a T-shaped sheet mold according to claim 2, characterized in that: The lower part of the straight wall of the first wall (1.11.1) and the third wall (1.11.3) is also provided with two sections of continuous inclined wall, wherein the inclination angle of the first section of the inclined wall that is inclined outward along the material dropping direction from top to bottom is smaller than that of the second section of the inclined wall that is inclined outward along the material dropping direction.

4. The blanking die for a T-shaped sheet mold according to claim 1, characterized in that: The second arc-shaped portion (2.2) is composed of a first waste surface (2.2.1), a second arc-shaped surface (2.2.2), an arc-shaped transition surface (2.2.3), a third arc-shaped surface (2.2.4), and a second waste surface (2.2.5) connected in sequence. The second blade assembly (1.21) includes a fourth wall (1.21.1), a fifth wall (1.21.2), a sixth wall (1.21.3), a seventh wall (1.21.4), and an eighth wall (1.21.5) connected in sequence, wherein the fourth wall (1.21.1), the sixth wall (1.21.3), and the eighth wall... (1.21.5) is an inclined wall that slopes outward along the material dropping direction. The fifth wall (1.21.2) and the seventh wall (1.21.4) are straight walls. The first waste surface (2.2.1) corresponds to the fourth wall (1.21.1). The second arc-shaped surface (2.2.2) abuts against the fifth wall (1.21.2). The arc-shaped transition surface (2.2.3) corresponds to the sixth wall (1.21.3). The third arc-shaped surface (2.2.4) abuts against the seventh wall (1.21.4). The second waste surface (2.2.5) corresponds to the eighth wall (1.21.5).

5. The blanking die for a T-shaped sheet mold according to claim 4, characterized in that: The fourth wall (1.21.1) and the eighth wall (1.21.5) are two-section continuous inclined walls, wherein the angle of the first section inclined outward along the material dropping direction is smaller than the angle of the second section inclined outward along the material dropping direction.

6. The blanking die for a T-shaped sheet mold according to claim 1, characterized in that: The third blade assembly (1.31) includes a ninth wall (1.31.1), which is a continuous inclined wall with two ends. The angle of the first section of the inclined wall from top to bottom along the material dropping direction is smaller than the angle of the second section of the inclined wall along the material dropping direction.

7. The blanking die for a T-shaped sheet mold according to claim 1, characterized in that: The bottom wall portion (2.31) is composed of a first clamping transition surface (2.31.1), a first clamping surface (2.31.2), and a second clamping transition surface (2.31.3) connected in sequence. The fourth blade assembly (1.41) includes a tenth wall (1.41.1), an eleventh wall (1.41.2), and a twelfth wall (1.41.3). The tenth wall (1.41.1) and the twelfth wall (1.41.3) are inclined walls that slope outward along the material dropping direction. The eleventh wall (1.41.2) is a straight wall. The tenth wall (1.41.1) corresponds to the first clamping transition surface (2.31.1), the eleventh wall (1.41.2) corresponds to the first clamping surface (2.31.2), and the twelfth wall (1.41.3) corresponds to the second clamping transition surface (2.31.3).

8. The blanking die for a T-shaped sheet mold according to claim 1, characterized in that: The side wall portion (2.33) is composed of the third waste section (2.33.1), the second clamping surface (2.33.2), and the third clamping transition surface (2.33.3). The fifth cutting edge group (1.51) includes the thirteenth wall (1.51.1), the fourteenth wall (1.51.2), and the fifteenth wall (1.51.3). The thirteenth wall (1.51.1) and the fifteenth wall (1.51.3) are inclined walls that slope outward along the material dropping direction. The fourteenth wall (1.51.2) is a straight wall. The thirteenth wall (1.51.1) corresponds to the third waste section (2.33.1). The fourteenth wall (1.51.2) abuts against the second clamping surface (2.33.2). The fifteenth wall (1.51.3) corresponds to the third clamping transition surface (2.33.3).

Images