A product punching, bending and overturning die

Abstract

The present invention discloses a product punching, bending and reversing die, which comprises an upper die and a lower die. The lower die is a fixed die, and the upper die is a movable die. The lower die includes a lower-layer sliding part, and the upper die includes an upper-layer sliding part. The lower die is the fixed part of the die and is located below the whole die. The upper die is the movable part of the die and is located above the whole die. The upper die floats upward or descends downward to facilitate the product to enter or leave the die. The lower-layer sliding part includes a lower sliding block, which is located inside the lower die. The upper-layer sliding part includes an upper sliding block, which is arranged on the upper die. The present invention adopts an integrated design of upper and lower-layer sliding, including an upper-layer sliding part and a lower-layer sliding part. Compared with the traditional punching and bending, the die structure is simple, realizing punching, bending and reversing in an extremely small internal space. When punching, bending and reversing, the process is reduced, the product scratching is significantly improved, the defective products are reduced, the production efficiency is improved, and the cost is better saved.

Description

Technical Field

[0001] The present invention relates to the technical field of molds, and particularly to a product punching and reverse bending mold. Background Art

[0002] Traditional punching and reverse bending molds have complex structures, large space occupied by mechanisms, complex processes when products are punched and reverse bent, are prone to scratching during the punching and reverse bending process, and punching is likely to cause product deformation, thus generating a large number of defective products. Therefore, most current manufacturers choose forward bending. Summary of the Invention

[0003] The present invention is to overcome the problems of complex structure of the existing punching and reverse bending molds, large space occupied by mechanisms, and complex processes when products are punched and reverse bent, and provides a product punching and reverse bending mold.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A product punching and reverse bending mold includes an upper mold and a lower mold. The lower mold is a fixed mold, and the upper mold is a movable mold. The lower mold includes a lower layer sliding part, and the upper mold includes an upper layer sliding part. The lower mold is the fixed part of the mold and is located below the entire mold. The upper mold is the movable part of the mold and is located above the entire mold. The upper mold floats upward or descends to facilitate the product to enter or leave the mold. The lower layer sliding part includes a lower slider located inside the lower mold. The upper layer sliding part includes an upper slider provided on the upper mold. The product punching and reverse bending mold of the present invention adopts an integrated design of upper and lower layer sliding, including an upper layer sliding part and a lower layer sliding part. The upper layer sliding part includes an upper slider provided on the movable mold, and the lower layer sliding part includes a lower slider located inside the fixed mold. Compared with traditional punching and bending, the mold structure is simple, reverse bending in an extremely small internal space is achieved, the process is reduced during reverse bending, product scratching is significantly improved, defective products are reduced, production efficiency is increased, and costs are better saved.

[0006] As a preferred solution of the present invention, the upper mold further includes an upper mold base, an upper backing plate, an upper clamping plate, and an upper pressure plate arranged in sequence from top to bottom. An upper slider and a plurality of upper limit blocks are provided on a surface of the upper pressure plate away from the upper mold base. The upper limit blocks play a limiting role to prevent the mechanism from moving excessively during reverse bending, resulting in failed product forming.

[0007] As a preferred solution of the present invention, the upper mold further includes an insert knife. The insert knife penetrates through the upper clamping plate and the upper pressure plate and is connected to the upper backing plate. A pressure block is provided at a diagonal corner on a surface of the upper pressure plate away from the upper mold base.

[0008] As a preferred embodiment of the present invention, the lower die includes a lower die base and a bottom backing plate. The upper surface of the lower die base is provided with a groove, the depth of the groove is greater than the thickness of the bottom backing plate, the bottom backing plate is embedded in the groove of the lower die base, the bottom backing plate is provided with a lower slide block, one end of the lower slide block is provided with an inclined surface, a lower fixing seat is arranged on the inclined surface, and a slide block limiting block is arranged on the side of the groove near the other end of the lower slide block.

[0009] As a preferred embodiment of the present invention, the lower die further includes two slide block pressing blocks, the slide block pressing blocks are respectively arranged on both sides of the lower slide block, a punch slide seat is arranged on the inclined surface of the lower slide block, a punch fixing block is arranged on the punch slide seat, the punch slide seat is connected with a punch through the punch fixing block, the lower die base is further provided with two lower cushion blocks, the lower cushion blocks are respectively arranged on both sides of the groove of the lower die base, and a lower blank holding plate is arranged on the lower cushion blocks.

[0010] As a preferred embodiment of the present invention, the lower blank holding plate is provided with a lower bottom plate and a slide block clamping block, the lower bottom plate is provided with a lower backing plate and a die cavity, one side of the lower bottom plate and the lower blank holding plate is provided with a fixing hole, the lower bottom plate and the lower blank holding plate are connected with a spring pressing block through the fixing hole, several lower limiting blocks are arranged on the side surface of the lower backing plate, and a lower blank pressing block is arranged between the lower backing plate and the die cavity.

[0011] As a preferred embodiment of the present invention, the positions of the lower limiting blocks and the upper limiting blocks correspond to each other longitudinally. When the lower die and the upper die are closed into one body, the upper limiting block contacts the lower limiting block.

[0012] Therefore, the present invention has the following beneficial effects: A product punching and reverse bending die of the present invention adopts an upper and lower layer sliding integrated design, including an upper layer sliding part and a lower layer sliding part. The upper layer sliding part includes an upper slide block arranged on the moving die, and the lower layer sliding part includes a lower slide block located inside the fixed die. Compared with the traditional punching and bending, the die structure is simple, realizing punching and reverse bending in a very small internal space, reducing the processes during punching and reverse bending, significantly improving the product scratch, reducing defective products, and improving production efficiency, thereby better saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a partial front cross-sectional view of the die of the present invention;

[0014] Figure 2 is a partial side cross-sectional view of the die of the present invention;

[0015] Figure 3 is a schematic structural view of the punching and reverse bending part of the die of the present invention;

[0016] Figure 4 is a schematic structural view of the lower die when the die of the present invention performs punching and reverse bending;

[0017] Figure 5It is a schematic diagram of the overall structure of the mold of the present invention in one direction;

[0018] Figure 6 It is a schematic diagram of the overall structure of the mold of the present invention in another direction;

[0019] Figure 7 It is a schematic diagram before the product is punched and bent backward;

[0020] Figure 8 It is a schematic diagram after the product is punched and bent backward.

[0021] In the figure: 1. upper die holder; 2. lower die holder; 3. upper backing plate; 4. upper clamping plate; 5. upper pressure plate; 6. upper slider; 7. lower backing plate; 8. lower bottom plate; 9. lower slider; 10. lower fixed seat; 11. bottom backing plate; 12. inserting knife; 13. slider pressing block; 14. lower spacer block; 15. punch slide seat; 16. slider locking block; 17. pressing block; 18. female die; 19. punch; 20. punch fixing block; 21. spring pressing block; 22. lower pressure plate; 23. lower limit block; 24. upper limit block; 25. slider limit block; 26. product; 27. lower pressure plate. Detailed implementation manners

[0022] The present invention will be further described below in conjunction with the accompanying drawings and detailed implementation manners.

[0023] As Figure 1 , Figure 2 and Figure 3 shown, a product punching and bending-backward mold includes an upper die and a lower die. The lower die is a fixed die, and the upper die is a movable die. The lower die includes a lower-layer sliding part, and the upper die includes an upper-layer sliding part; the lower die is the fixed part of the mold and is located below the entire mold; the upper die is the movable part of the mold and is located above the entire mold. The upper die floats upward or descends downward to facilitate the product to enter or exit the mold; the lower-layer sliding part includes a lower slider 9 located inside the lower die; the upper-layer sliding part includes an upper slider 6 provided on the upper die. The product punching and bending-backward mold of the present invention adopts an integrated design of upper and lower-layer sliding, including an upper-layer sliding part and a lower-layer sliding part. The upper-layer sliding part includes an upper slider 6 provided on the movable die, and the lower-layer sliding part includes a lower slider 9 located inside the fixed die. Compared with the traditional punching and bending, the mold structure is simple, realizing punching and bending backward in a very small internal space, reducing the number of processes during punching and bending backward, significantly improving the product scratch, reducing defective products, and improving production efficiency, thereby better saving costs.

[0024] As Figure 1 , Figure 2 and Figure 5As shown in the figure, the upper die further includes an upper die base 1, an upper backing plate 3, an upper clamping plate 4, and an upper blank holder 5 arranged in sequence from top to bottom. On the side of the upper blank holder 5 away from the upper die base 1, there are an upper slide block 6 and a number of upper limit blocks 24. The upper die base 1 is connected to the upper backing plate 3, the upper backing plate 3 is connected to the upper clamping plate 4, the upper clamping plate 4 is connected to the upper blank holder 5, and both the upper slide block 6 and the number of upper limit blocks 24 are arranged on the upper blank holder 5. In this embodiment, there are three upper limit blocks 24, including a first upper limit block, a second upper limit block, and a third upper limit block. The first upper limit block is arranged at a vertex angle of the upper blank holder 5, and the second upper limit block is arranged on the upper blank holder 5 corresponding to one end of the upper slide block 6. The upper die further includes an inserting knife 12. The inserting knife 12 passes through the upper clamping plate 4 and the upper blank holder 5 and is connected to the upper backing plate 3. At a diagonal corner of the side of the upper blank holder 5 away from the upper die base 1, there is a pressing block 17, and the third upper limit block is arranged beside one of the pressing blocks 17.

[0025] As Figure 1 , Figure 2 and Figure 6 shown in the figure, the lower die includes a lower die base 2 and a bottom backing plate 11. There is a groove on the upper surface of the lower die base 2, and the depth of the groove is greater than the thickness of the bottom backing plate 11. The shape, length, and width of the groove are the same as those of the bottom backing plate 11. The bottom backing plate 11 is embedded in the groove of the lower die base 2. There is a lower slide block 9 on the bottom backing plate 11, and there is an inclined surface at one end of the lower slide block 9. There is a through hole on each of the lower die base 2, the bottom backing plate 11, and the lower slide block 9. The through holes on the lower die base 2, the bottom backing plate 11, and the lower slide block 9 are connected together to form a long through hole, and this long through hole allows the inserting knife 12 to be inserted. The end of the inserting knife 12 connected to the upper backing plate 3 is thicker than the other end of the inserting knife 12. There is an inclined surface between the thicker part and the thinner part of the inserting knife 12, and there is another inclined surface at one end of the thinner part of the inserting knife 12. There is also an inclined surface at the through hole of the lower slide block 9, and the inclined surface at the through hole of the lower slide block 9 corresponds to the inclined surface of the inserting knife 12. When the inclined surface of the inserting knife 12 contacts the inclined surface at the through hole of the lower slide block 9, as the inserting knife 12 descends, the inserting knife 12 drives the lower slide block 9 to move. There is a lower fixing seat 10 on the inclined surface of the lower slide block 9. There is an opening on the side surface of the lower fixing seat 10, and the inside of the lower fixing seat 10 is hollow. The inclined surface of the lower slide block 9 is inserted into the lower fixing seat 10 through the opening. There is a slide block limit block 25 on the side surface of the groove of the lower die base 2 near the other end of the lower slide block 9, and the slide block limit block 25 plays a role in limiting the lower slide block 9.

[0026] The lower die further includes two slider pressing blocks 13 which are respectively arranged on both sides of the lower slider 9 to prevent the lower slider 9 from moving sideways. A punch slide base 15 is arranged on the inclined surface of the lower slider 9, and a punch fixing block 20 is arranged on the punch slide base 15. The punch fixing block 20 plays a role in fixing and connecting the punch. One end of the punch 19 is connected to the punch slide base 15 through the punch fixing block 20, and the shape of the other end of the punch 19 is the shape where the product 26 is to be punched and bent. When the inserting knife 12 moves downward and inserts into the lower slider 9, the inclined surface at the through-hole of the lower slider 9 contacts the inclined surface of the inserting knife 12. The inserting knife 12 drives the lower slider 9, and the inclined surface of the lower slider 9 drives the punch assembly (the punch assembly includes the punch 19, the punch fixing block 20 and the punch slide base 15) to extend upward to complete the punching and bending. Two lower cushion blocks 14 are also arranged on the lower die base 2, and the lower cushion blocks 14 are respectively arranged on the surface of the lower die base 2 on both sides of the groove of the lower die base 2. A lower pressure plate 27 is arranged on the lower cushion block 14. The lower pressure plate 27 is provided with two through-holes. One through-hole corresponds to the through-hole of the lower slider 9 so that the inserting knife 12 can be inserted, and the other through-hole corresponds to the punch slide base 15 to embed the punch slide base 15 into the through-hole, so that the punch 19 extends out of the lower pressure plate 27.

[0027] The lower pressure plate 27 is provided with a lower bottom plate 8 and a slider clamping block 16. A lower cushion plate 7 and a female die 18 are arranged on the lower bottom plate 8. The lower bottom plate 8 and the lower cushion plate 7 are both provided with through-holes corresponding to the through-holes of the lower slider 9. The through-hole on the lower cushion plate 7 corresponding to the through-hole of the lower slider 9 is larger than the through-hole of the lower slider 9. The slider clamping block 16 passes through the lower bottom plate 8 and the lower cushion plate 7 and is arranged on the lower pressure plate 27. The punch 19 passes through the lower pressure plate 27, the lower bottom plate 8 and the lower cushion plate 7. The female die 18 passes through the lower cushion plate 7 and is arranged above the punch 19. One side of the lower bottom plate 8 and the lower pressure plate 27 is provided with a fixing hole. The lower bottom plate 8 and the lower pressure plate 27 are connected with a spring pressing block 21 through the fixing hole. Several lower limit blocks 23 are arranged on the side surface of the lower cushion plate 7. In this embodiment, there are three lower limit blocks 23, and the positions of the lower limit blocks 23 correspond to the upper limit blocks longitudinally. When the lower die and the upper die are closed into one body, the upper limit block contacts the lower limit blocks 23, and a lower pressure block 22 is arranged between the lower cushion plate 7 and the female die 18.

[0028] When a product punching and bending die of the present invention is working, first place the product 26 as shown in Figure 7 on the one as shown in Figure 4In the shown die tooling, after accurate product positioning by the product positioning means, the inserting tool 12 drives the upper slider 6 to drive the punch assembly to slide into the preformed position of the product. The floating mechanism is pressed against the forming part of the product under the action of the upper die spring force. The inserting tool 12 continues to move downward. When the upper slider 6 reaches the position, the lower slider 9 drives the punch assembly, and the punch 19 fits upward against the die 18 to form the product. When the forming is completed, the upper and lower limit posts limit the position to ensure the small bend size of the punching and bending. After the punching and bending is completed, it returns. The upper die moves upward. The inserting tool 12 drives the lower slider 9 and the punch 19 to disengage from the product 26. The floating assembly is released. The upper slider 6 slides away. Each mechanism resets. The product 26 is taken out to obtain the product 26 as shown in Figure 8 shown, such as Figure 8 shown within the ellipse in

[0029] A product punching and bending die of the present invention adopts an integrated design of upper and lower layer sliding, including an upper layer sliding part and a lower layer sliding part. The upper layer sliding part includes an upper slider arranged on the moving die, and the lower layer sliding part includes a lower slider located inside the fixed die. Compared with the traditional punching and bending, the die structure is simple, realizing punching and bending in an extremely small internal space, reducing the processes during punching and bending, significantly improving the product scratching, reducing defective products, and improving production efficiency, thereby better saving costs. Adopting the die structure design of the present invention is convenient for operation and stable and reliable.

[0030] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any change or replacement that can be thought of without creative work should be covered within the protection scope of the present invention.

Claims

1. A product punching, bending and overturning die, characterized in that It includes an upper die and a lower die. The lower die is a fixed die, and the upper die is a movable die. The lower die includes a lower sliding part, and the upper die includes an upper sliding part; The lower die is the fixed part of the mold and is located below the entire mold; The upper die is the movable part of the mold and is located above the entire mold. The upper die floats upward or descends downward to facilitate the product to enter or leave the mold; The lower sliding part includes a lower slider, which is located inside the lower die; The upper sliding part includes an upper slider, which is arranged on the upper die; The upper die further includes an upper die base, an upper backing plate, an upper clamping plate, and an upper blank holding plate arranged in sequence from top to bottom. The upper die also includes an inserting tool, which penetrates through the upper clamping plate and the upper blank holding plate and is connected to the upper backing plate. The lower die includes a lower die base and a bottom backing plate. A groove is provided on the upper surface of the lower die base, and the bottom backing plate is embedded in the groove of the lower die base. A lower slider is provided on the bottom backing plate. One end of the lower slider is provided with an inclined surface, and a lower fixing seat is provided on the inclined surface. The lower die also includes two slider pressing blocks, which are respectively arranged on both sides of the lower slider. A punch slide seat is provided on the inclined surface of the lower slider, and a punch fixing block is provided on the punch slide seat. The punch slide seat is connected with a punch through the punch fixing block. Two lower cushion blocks are provided on the lower die base, which are respectively arranged on both sides of the groove of the lower die base. A lower blank holding plate is provided on the lower cushion block. A lower bottom plate and a slider clamping block are provided on the lower blank holding plate. The slider clamping block passes through the lower bottom plate and the bottom backing plate and is arranged on the lower blank holding plate. A bottom backing plate and a die cavity are provided on the lower bottom plate. A lower blank holding block is provided between the bottom backing plate and the die cavity.

2. The product punching, bending and overturning die according to claim 1, characterized in that, On the side of the upper blank holding plate away from the upper die base, there are an upper slider and several upper limit blocks.

3. A product punching and bending die according to claim 2, characterized in that, On one diagonal of the side of the upper blank holding plate away from the upper die base, there is a pressing block.

4. A product punching and bending die according to claim 1 or 2 or 3, characterized in that, The depth of the groove is greater than the thickness of the bottom backing plate, and a slider limit block is provided on the side of the other end of the groove close to the lower slider.

5. A product punching, falling and bending die according to claim 4, characterized in that, The shape, length, and width of the groove are the same as those of the bottom backing plate.

6. A product punching and bending die according to claim 5, characterized in that, A lower bottom plate and a slider clamping block are provided on the lower blank holding plate. A bottom backing plate and a die cavity are provided on the lower bottom plate. Fixing holes are provided on one side of the lower bottom plate and the lower blank holding plate. The lower bottom plate and the lower blank holding plate are connected with a spring pressing block through the fixing holes. Several lower limit blocks are provided on the side of the bottom backing plate. A lower blank holding block is provided between the bottom backing plate and the die cavity.

7. A product punching and bending die according to claim 6, characterized in that, The positions of the lower limit blocks and the upper limit blocks correspond to each other longitudinally. When the lower die and the upper die are closed into one body, the upper limit blocks and the lower limit blocks are in contact with each other.

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