Side-clamping stamping die

Abstract

This utility model relates to the field of mold technology, and in particular to a stamping die with side-clamping locking. It includes an upper die base, an upper die core, a lower die core, a float block, a pressure ring, a lower die base, a float elastic element, a pressure elastic element, an elastic reset element, two side sliders, and two drive blocks. The lower die base has a cavity with steps. The pressure ring has a lower bending flange surface. The drive blocks have a lower drive slope surface. The side sliders have an upper bending flange surface that mates with the lower bending flange surface. This application allows the side sliders to first bend and form the edge of the workpiece by engaging with the pressure ring, and then laterally press the edge of the workpiece against the pressure ring to ensure the positional accuracy and stability of the workpiece. Then, the upper die core and lower die core engage to complete the drawing and stamping forming of the workpiece. During demolding, the upper and lower die cores separate from the formed workpiece first, and the side sliders then separate from the formed workpiece, improving the stability of workpiece demolding.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a stamping mold for side pressing and locking. Background Technology

[0002] Stamping dies are special process equipment used in cold stamping to process workpieces (metal or non-metal) into parts (or semi-finished products). They are called cold stamping dies (commonly known as cold stamping dies). Stamping is a pressure processing method that uses dies mounted on a stamping press to apply pressure to a workpiece at room temperature, causing it to separate or plastically deform, thereby obtaining the desired part.

[0003] Among existing patents, Chinese patent application number 201521084511.2 discloses a locking device for a secondary drawing and stamping die. It includes a punch mounted on a base, a blank holder surrounding the punch, a pressure plate above the punch and blank holder, a die on the pressure plate, and a pressing device connected to a first cylinder. The pressing device includes a locking end and a punch end that mates with a partial die on the punch. A second cylinder is mounted on the blank holder, and a locking push block connected to its end has an inclined surface that mates with the locking end of the pressing device. This patent uses the engagement of the punch end of the pressing device with a partial die of the punch to clamp and position the workpiece. However, this requires a partial die on the punch, making the punch structure complex and increasing the difficulty and cost of punch manufacturing. Utility Model Content

[0004] In order to solve the above-mentioned technical problems, the purpose of this utility model is to provide a stamping die with side-press material locking.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A side-clamping stamping die includes an upper die base, an upper die core, a lower die core, a float block, a blank holder ring, a lower die base, a float elastic element, a blank holder elastic element, an elastic reset element, two side sliders, and two drive blocks. The top surface of the lower die base has a recessed cavity. Two steps communicating with the cavity are symmetrically arranged on the top of the two opposite side walls of the cavity. The lower die core is installed inside the cavity. The float block is vertically positioned in the middle of the lower die core and is elastically connected to the bottom wall of the cavity via the float elastic element. The blank holder ring is vertically fitted onto the outer wall of the lower die core and is elastically connected to the bottom wall of the cavity via the blank holder elastic element. The two drive blocks are respectively located at the two steps. The top surface of the blank holder ring has a downward bending flange. The two drive blocks are located on both sides of the blank holder ring. A lower drive ramp is provided on the side closest to each other. The upper mold base is raised and positioned above the lower mold base. The upper mold core is located on the bottom surface of the upper mold base. Two side sliders are located on both sides of the upper mold core. The two side sliders are respectively set one-to-one with the two drive blocks. The side sliders are horizontally elastically connected to the upper mold base via an elastic reset member. The elastic reset member applies a force to the side sliders away from the upper mold core. One side of the side slider is provided with an upper bending flange surface, which is used to engage with the lower bending flange surface. The other side of the side slider is provided with an upper drive ramp surface for sliding contact with the lower drive ramp surface. The upper mold core is located above the floating block and the lower mold core, and the upper mold core engages with the lower mold core. Under normal conditions, the top surface of the floating block and the top surface of the pressure ring are both higher than the top surface of the lower mold core.

[0007] Furthermore, the side of the drive block away from the lower drive ramp is elastically connected to the side wall of the step via an elastic buffer.

[0008] Furthermore, the upper mold core is elastically connected to the bottom surface of the upper mold base via the upper mold elastic element.

[0009] Furthermore, the side slider is embedded with an insert, and the upper bent flange is disposed on the insert.

[0010] Furthermore, the side slider is equipped with an upper inclined block, and the upper driving inclined surface is located on the upper inclined block.

[0011] Furthermore, the drive block is fitted with a lower inclined block, and the lower drive inclined surface is located on the lower inclined block.

[0012] Furthermore, the floating material block is slidably connected to the lower mold base via equal-height screws.

[0013] Furthermore, the inner wall of the lower mold base is provided with a clearance hole, the stud of the equal-height screw is threadedly connected to the bottom surface of the floating block, the guide post of the equal-height screw is slidably connected to the lower mold base and can extend into the clearance hole, and the nut of the equal-height screw is movably set in the clearance hole and can abut against the top wall of the clearance hole.

[0014] Furthermore, a guide block is provided on the bottom edge of the upper mold base, and a guide hole is provided on the top surface of the lower mold base. The guide block is used to slide with the guide hole.

[0015] Furthermore, the upper mold base is provided with a buffer limit block, which is located on the side of the side slider away from the lower mold core. The buffer limit block is used to limit and buffer the horizontal sliding of the side slider.

[0016] The beneficial effects of this utility model are as follows: In practical applications, when this stamping die is installed on a stamping press, initially, the upper and lower die bases are in the open state, the floating material elastic element and the pressure ring elastic element are in the extended state, and the top surface of the floating material block and the top surface of the pressure ring are higher than the top surface of the lower die core. At this time, the workpiece is placed on the floating material block and the pressure ring, and the lower bent flange of the pressure ring is located below the edge of the workpiece. Then, the stamping press drives the stamping die to close, and the upper die base gradually moves downward toward the lower die base. The upper bending flange of the side slider first engages with the lower bending flange of the pressure ring to bend and shape the edge of the workpiece. As the side slider continues to move downward with the lower die base, the upper die core presses the workpiece against the floating block and the pressure ring. The lower driving inclined surface of the drive block slides against the upper driving inclined surface of the side slider, causing the drive block to apply a horizontal extrusion force to the side slider and compress the elastic reset component. This causes the side slider to move horizontally closer to the upper die core and press the bent edge of the workpiece against the pressure ring. This prevents the workpiece after edge bending from shifting. The upper die continues to move downwards, and the pressure ring and floating block, under the downward pressure of the upper die core, move downwards along with the workpiece, compressing the pressure ring elastic component and the floating block elastic component until the upper die core and lower die core cooperate to draw and stamp the workpiece. After the workpiece is drawn and stamped, the upper die and lower die bases open. As the upper die core and lower die core gradually open, the pressure ring elastic component and the floating block elastic component gradually recover their elasticity, causing the pressure ring and floating block to move the drawn and stamped workpiece upwards, so that the formed workpiece is separated from the lower die core. As the upper die base moves upwards, the upper die core first separates from the formed workpiece, and the drive block gradually releases the lateral extrusion force on the side slider. The elastic reset component gradually recovers its elasticity and drives the side slider to return to horizontal reset, so that the upper bent flange of the side slider separates from the workpiece. After the stamping die is fully opened, the formed workpiece is located on the top surface of the pressure ring and the top surface of the floating block, making it easy for operators or external equipment to remove the formed workpiece. This invention first uses a side slider and a pressure ring to bend and shape the edge of the workpiece, and then presses the edge of the workpiece laterally onto the pressure ring to ensure the positional accuracy and stability of the workpiece. Then, the upper and lower die cores work together to complete the drawing and stamping of the workpiece. During demolding, the upper and lower die cores separate from the formed workpiece first, and the side slider separates from the formed workpiece next, which improves the stability of the workpiece demolding. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model in the mold-open state.

[0018] Figure 2 This is a schematic diagram of the structure of the present invention during the mold closing process.

[0019] Figure 3 This is a schematic diagram of the structure of the present invention in a fully closed mold state.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1. Upper mold base; 2. Upper mold core; 3. Lower mold core; 4. Floating material block; 5. Pressure ring; 6. Lower mold base; 7. Floating material elastic component; 8. Pressure ring elastic component; 9. Elastic reset component; 10. Side slider; 11. Drive block; 12. Cavity; 13. Step; 14. Lower bending flange surface; 15. Lower drive slope; 16. Upper bending flange surface; 17. Upper drive slope; 18. Elastic buffer component; 19. Upper mold elastic component; 20. Insert; 21. Upper inclined block; 22. Lower inclined block; 23. Equal height screw; 24. Clearance hole; 25. Guide block; 26. Guide hole; 27. Buffer limit block. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0023] like Figures 1 to 3As shown, the stamping die with side-clamping locking provided by this utility model includes an upper die base 1, an upper die core 2, a lower die core 3, a floating block 4, a pressure ring 5, a lower die base 6, a floating elastic element 7, a pressure elastic element 8, an elastic reset element 9, two side sliders 10, and two drive blocks 11. The top surface of the lower die base 6 is recessed with a cavity 12. The top of the two opposite side walls of the cavity 12 are symmetrically provided with two steps 13 communicating with the cavity 12. The lower die core 3 is equipped with... Inside the cavity 12, the floating block 4 is vertically positioned in the middle of the lower mold core 3. The floating block 4 is elastically connected to the bottom wall of the cavity 12 via the floating elastic element 7. The pressure ring 5 is vertically fitted onto the outer wall of the lower mold core 3. The pressure ring 5 is elastically connected to the bottom wall of the cavity 12 via the pressure elastic element 8. Two drive blocks 11 are respectively positioned at two steps 13. The top surface of the pressure ring 5 is provided with a downward bending flange surface 14. The two drive blocks 11 are located on both sides of the pressure ring 5. The two drive blocks 11 are provided with a lower drive slope 15 on one side close to each other. The upper mold base 1 is raised and lowered above the lower mold base 6. The upper mold core 2 is provided on the bottom surface of the upper mold base 1. The two side sliders 10 are located on both sides of the upper mold core 2. The two side sliders 10 are respectively provided with the two drive blocks 11 one by one. The side sliders 10 are horizontally elastically connected to the upper mold base 1 via the elastic reset member 9. The elastic reset member 9 applies a force away from the upper mold core 2 to the side sliders 10. One side of the side slider 10 is provided with an upper bending flange 16, which is used to engage with the lower bending flange 14. The other side of the side slider 10 is provided with an upper drive slope 17 for sliding contact with the lower drive slope 15. The upper mold core 2 is located above the floating block 4 and the lower mold core 3. The upper mold core 2 and the lower mold core 3 are engaged with each other. In normal condition, the top surface of the floating block 4 and the top surface of the pressure ring 5 are higher than the top surface of the lower mold core 3.

[0024] In practical applications, this stamping die is installed on a stamping press. Initially, the upper die holder 1 and the lower die holder 6 are in the open state, and the floating material elastic element 7 and the pressure plate elastic element 8 are in the extended state. The top surface of the floating material block 4 and the top surface of the pressure plate ring 5 are both higher than the top surface of the lower die core 3. At this time, the workpiece is placed on the floating material block 4 and the pressure plate ring 5, and the lower bent flange 14 of the pressure plate ring 5 is located below the edge of the workpiece. Then, the stamping press drives the stamping die to close, and the upper die holder 1 gradually moves downward toward the lower die holder 6. The upper bent flange of the side slide block 10 on the upper die holder 1... Surface 16 first engages with the lower bending flange surface 14 of the pressure ring 5 to bend and shape the edge of the workpiece. As the side slider 10 continues to move downward with the lower die base 6, the upper die core 2 presses the workpiece against the floating block 4 and the pressure ring 5. The lower driving inclined surface 15 of the drive block 11 slides and abuts against the upper driving inclined surface 17 of the side slider 10, so that the drive block 11 applies a horizontal extrusion force to the side slider 10 and compresses the elastic reset member 9, thereby causing the side slider 10 to move horizontally closer to the upper die core 2 and press the bent edge of the workpiece against the pressure ring 5. This prevents the workpiece after edge bending from shifting, and the upper die holder 1 continues to move downward. Under the downward pressure of the upper die core 2, the pressure ring 5 and the floating block 4 move downward along with the workpiece, compressing the pressure elastic element 8 and the floating elastic element 7, until the upper die core 2 and the lower die core 3 cooperate to draw and stamp the workpiece. After the workpiece is drawn and stamped, the upper die holder 1 and the lower die holder 6 open. As the upper die core 2 and the lower die core 3 gradually open, the pressure elastic element 8 and the floating elastic element 7 gradually recover their elasticity, causing the pressure ring 5 and the floating block 4 to press the workpiece into shape. The workpiece moves upward after forming, allowing it to detach from the lower die core 3. As the upper die base 1 moves upward, the upper die core 2 first separates from the formed workpiece. The drive block 11 then gradually releases the lateral pressure on the side slider 10. The elastic reset member 9 gradually recovers its elasticity and drives the side slider 10 to return to its horizontal position, causing the upper bent flange 16 of the side slider 10 to separate from the workpiece. After the stamping die is fully opened, the formed workpiece is located on the top surface of the pressure ring 5 and the top surface of the floating block 4, making it easy for operators or external equipment to remove the formed workpiece. This invention can first use the side slider 10 and the pressure ring 5 to bend and form the edge of the workpiece and laterally press the edge of the workpiece onto the pressure ring 5 to ensure the positional accuracy and stability of the workpiece. Then, the upper die core 2 and the lower die core 3 cooperate to complete the drawing and stamping of the workpiece. During demolding, the upper die core 2 and the lower die core 3 first separate from the formed workpiece, and then the side slider 10 separates from the formed workpiece, improving the stability of workpiece demolding.

[0025] Specifically, both the floating material elastic element 7 and the pressing edge elastic element 8 can be hydraulic pneumatic jacks.

[0026] In this embodiment, the side of the drive block 11 away from the lower drive ramp 15 is elastically connected to the side wall of the step 13 via an elastic buffer 18. Specifically, the elastic buffer 18 can be a butterfly spring. The elastic buffer 18 not only prevents the side slider 10 from having a hard impact collision with the drive block 11, but also, during the sliding contact between the upper drive ramp 17 of the side slider 10 and the lower drive ramp 15 of the drive block 11, the drive block 11 will squeeze the elastic buffer 18, causing the elastic buffer 18 to be compressed. At the same time, the compressed elastic buffer 18 will exert a reverse force on the drive block 11, causing the drive block 11 to exert a horizontal compressive force on the side slider 10.

[0027] In this embodiment, the upper die core 2 is elastically connected to the bottom surface of the upper die base 1 via the upper die elastic element 19. Specifically, the upper die elastic element 19 can be a nitrogen spring. During the mold closing process of the upper die core 2 and the lower die core 3, the upper die elastic element 19 not only plays a buffering role, but also applies elastic force to the upper die core 2, so that the upper die core 2 and the lower die core 3 can perform drawing and stamping forming of the workpiece.

[0028] In this embodiment, the side slider 10 is embedded with an insert 20, and the upper bent flange 16 is disposed on the insert 20. With this structural design, when the upper bent flange 16 is worn, only the insert 20 needs to be replaced, which is convenient for disassembly and maintenance and has low maintenance costs.

[0029] In this embodiment, the side slider 10 is equipped with an upper inclined block 21, and the upper driving inclined surface 17 is located on the upper inclined block 21. When the upper driving inclined surface 17 is worn, only the upper inclined block 21 needs to be replaced, which makes disassembly and maintenance convenient and reduces maintenance costs.

[0030] In this embodiment, the drive block 11 is fitted with a lower inclined block 22, and the lower drive inclined surface 15 is located on the lower inclined block 22. When the lower drive inclined surface 15 is worn, only the lower inclined block 22 needs to be replaced, which makes disassembly and maintenance convenient and reduces maintenance costs.

[0031] In this embodiment, both the pressure ring 5 and the floating block 4 are slidably connected to the lower die base 6 via equal-height screws 23. This structural design prevents the pressure ring 5 and the floating block 4 from detaching from the lower die base 6 without affecting their lifting and lowering movement.

[0032] In this embodiment, the inner wall of the lower mold base 6 is provided with a clearance hole 24. The stud of the equalizing screw 23 is threadedly connected to the bottom surface of the floating block 4. The guide post of the equalizing screw 23 is slidably connected to the lower mold base 6 and can extend into the clearance hole 24. The nut of the equalizing screw 23 is movably disposed within the clearance hole 24 and can abut against the top wall of the clearance hole 24. This structural design makes the pressure ring 5 and the floating block 4 compact with the lower mold base 6, which is beneficial for the equalizing screw 23 to move stably relative to the lower mold base 6.

[0033] In this embodiment, a guide block 25 is protruding from the bottom edge of the upper mold base 1, and a guide hole 26 is recessed on the top surface of the lower mold base 6. The guide block 25 is used to slide and engage with the guide hole 26. During the opening and closing process of the upper mold base 1 and the lower mold base 6, the guide block 25 slides and engages with the guide hole 26, which improves the opening and closing stability of the upper mold base 1 and the lower mold base 6.

[0034] In this embodiment, the upper mold base 1 is provided with a buffer limiting block 27. The buffer limiting block 27 is located on the side of the side slider 10 away from the lower mold core 3. The buffer limiting block 27 is used to limit and buffer the horizontal sliding of the side slider 10. Specifically, the buffer limiting block 27 can be made of polyurethane. During the process of the elastic reset member 9 driving the side slider 10 to horizontally reset, when the side slider 10 abuts against the buffer limiting block 27, it proves that the side slider 10 has been reset in place, so as to limit and buffer the side slider 10.

[0035] All technical features in this embodiment can be freely combined according to actual needs.

[0036] The above embodiments are preferred implementations of this utility model. In addition, this utility model can also be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A stamping die with side-clamping locking, characterized in that: The assembly includes an upper mold base (1), an upper mold core (2), a lower mold core (3), a floating block (4), a pressure ring (5), a lower mold base (6), a floating elastic element (7), a pressure elastic element (8), an elastic reset element (9), two side sliders (10), and two drive blocks (11). The top surface of the lower mold base (6) is recessed with a cavity (12). The top of the two opposite side walls of the cavity (12) are symmetrically provided with two steps (13) communicating with the cavity (12). The lower mold core (3) is installed in the cavity (12). The floating block (4) rises... The lower die core (3) is positioned in the middle. The floating material block (4) is elastically connected to the bottom wall of the cavity (12) via the floating material elastic element (7). The pressure ring (5) is lifted and sleeved on the outer wall of the lower die core (3). The pressure ring (5) is elastically connected to the bottom wall of the cavity (12) via the pressure ring elastic element (8). Two drive blocks (11) are respectively positioned at two steps (13). The top surface of the pressure ring (5) is provided with a downward bending flange surface (14). The two drive blocks (11) are located on both sides of the pressure ring (5). 1) A lower drive ramp (15) is provided on the side that is close to each other. The upper mold base (1) is raised and lowered above the lower mold base (6). The upper mold core (2) is provided on the bottom surface of the upper mold base (1). Two side sliders (10) are located on both sides of the upper mold core (2). The two side sliders (10) are respectively provided in correspondence with the two drive blocks (11). The side sliders (10) are horizontally elastically connected to the upper mold base (1) through the elastic reset member (9). The elastic reset member (9) applies a force away from the upper mold core (2) to the side sliders (10). One side of the side slider (10) is provided with an upper bending flange (16), which is used to engage with the lower bending flange (14). The other side of the side slider (10) is provided with an upper driving slope (17) for sliding contact with the lower driving slope (15). The upper mold core (2) is located above the floating block (4) and the lower mold core (3), and the upper mold core (2) and the lower mold core (3) are engaged. Under normal conditions, the top surface of the floating block (4) and the top surface of the pressure ring (5) are both higher than the top surface of the lower mold core (3).

2. The stamping die with side-clamping material locking according to claim 1, characterized in that: The side of the drive block (11) away from the lower drive ramp (15) is elastically connected to the side wall of the step (13) via an elastic buffer (18).

3. The stamping die with side-clamping locking according to claim 1, characterized in that: The upper mold core (2) is elastically connected to the bottom surface of the upper mold base (1) via the upper mold elastic element (19).

4. The stamping die with side-clamping material locking according to claim 1, characterized in that: The side slider (10) is fitted with an insert (20), and the upper bent flange (16) is set on the insert (20).

5. The stamping die with side-clamping material locking according to claim 1, characterized in that: The side slider (10) is equipped with an upper inclined block (21), and the upper driving inclined surface (17) is located on the upper inclined block (21).

6. The stamping die with side-clamping material locking according to claim 1, characterized in that: The drive block (11) is fitted with a lower inclined block (22), and the lower drive inclined surface (15) is located on the lower inclined block (22).

7. The stamping die with side-clamping material locking according to claim 1, characterized in that: The floating block (4) is slidably connected to the lower mold base (6) via the equal height screw (23).

8. The stamping die with side-clamping material locking according to claim 7, characterized in that: The inner wall of the lower mold base (6) is provided with a clearance hole (24). The stud of the equal height screw (23) is threadedly connected to the bottom surface of the floating block (4). The guide post of the equal height screw (23) is slidably connected to the lower mold base (6) and can extend into the clearance hole (24). The nut of the equal height screw (23) is moved and set in the clearance hole (24) and can abut against the top wall of the clearance hole (24).

9. The stamping die with side-clamping material locking according to claim 1, characterized in that: The upper mold base (1) has a guide block (25) protruding from its bottom edge, and the lower mold base (6) has a guide hole (26) recessed on its top surface. The guide block (25) is used to slide with the guide hole (26).

10. The stamping die with side-clamping material locking according to claim 1, characterized in that: The upper mold base (1) is provided with a buffer limit block (27). The buffer limit block (27) is located on the side of the side slider (10) away from the lower mold core (3). The buffer limit block (27) is used to limit and buffer the horizontal sliding of the side slider (10).

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