A stamping die

Abstract

The utility model relates to a kind of punch dies, the punch die includes first die, second die, compression block, punch and material pressing plate, the first die and the compression block are connected on upper die plate, the second die and the compression block are telescopically connected with the end away from upper die plate, and with the side surface of the first die slidingly fits;The punch and the material pressing plate are connected on lower die plate, the punch is located in the side of the material pressing plate, the side away from lower die plate is higher than the material pressing plate, and with the side surface of the material pressing plate fits, wherein, the first die and the second die and the punch and the material pressing plate cooperate to product stamping forming.The punch die can produce thrust to product after stamping is completed, assist the material of product to retreat, so that the product even with negative angle or shape exists and stamping direction interference influence the part of material to retreat, also can complete the material of product to retreat by the thrust of second die.

Description

Technical Field

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

[0002] A stamping die is a type of mold specifically designed to create negative angles during the stamping process. The main function of a stamping die is to use a specific structural design to cause the material to undergo tensile deformation in the stamping direction during stamping, thereby forming the corresponding product structure.

[0003] Stamping dies are widely used in parts manufacturing, such as automotive parts and electronic device housings. Traditional stamping dies typically consist of an upper die and a lower die, with corresponding stamping punches and dies on the upper and lower dies. The stamping punches and dies work together to form the product.

[0004] However, for specific products, such as those with parts that interfere with the stamping direction after forming, affecting material removal, or stamped products with negative angles, traditional stamping dies cause the product to adhere to the punch / die of the upper die after forming, making it difficult to remove the product and requiring manual assistance, thus affecting stamping efficiency. Utility Model Content

[0005] In view of this, the present invention provides a stamping die to solve the problem of material removal after stamping die product forming.

[0006] To achieve the above objectives, the technical solution of this utility model is to provide a stamping die, comprising: a first die, a second die, a clamping block, a punch, and a pressure plate. The first die and the clamping block are both connected to an upper template. The second die is telescopically connected to the end of the clamping block away from the upper template and slides against the side of the first die. The punch and the pressure plate are both connected to a lower template. The punch is located on one side of the pressure plate, and its side away from the lower template is higher than the pressure plate and is against the side of the pressure plate. The first die and the second die cooperate with the punch and the pressure plate to stamp and form the product.

[0007] Preferably, a telescopic push rod is provided between the second die and the clamping block. The two ends of the telescopic push rod are respectively connected to the second die and the clamping block, so as to drive the second die to retract toward the clamping block or extend away from the clamping block.

[0008] Preferably, one end of the telescopic push rod is connected to the second cavity mold, the clamping block is provided with a telescopic hole, the end of the telescopic push rod away from the second cavity mold is slidably inserted into the telescopic hole, and an elastic element is provided at the bottom of the telescopic hole.

[0009] Preferably, the telescopic hole includes a sliding part and a compression part, the sliding part is connected to the compression part, and the diameter of the compression part is larger than the diameter of the sliding part, and the elastic element is disposed in the compression part.

[0010] Preferably, a compression boss is provided at the end of the telescopic push rod away from the second die cavity. The compression boss is disposed inside the compression part and is adapted to the shape of the compression part.

[0011] Preferably, the first die has a connecting groove on the side near the clamping block, and the clamping block is located in the connecting groove.

[0012] Preferably, the surfaces on which the first and second dies slide in contact are both inclined surfaces.

[0013] Preferably, a groove is provided on the side of the first die near the second die, and a slide table is provided on the second die, the slide table slidingly engaging with the groove.

[0014] Preferably, the side of the punch closest to the pressure plate is an inclined surface, and it is inclined in a direction away from the pressure plate.

[0015] Preferably, the clamping block has a clearance groove on the side near the punch.

[0016] Compared with the prior art, the stamping die provided by this utility model has the following beneficial effects:

[0017] The telescopic connection between the second die and the clamping block enables the product to be stamped during compression and to generate a thrust on the product after stamping to assist in the unloading of the product. This allows the product to be unloaded even if it has a negative angle or a shape that interferes with the stamping direction and affects the unloading. Attached Figure Description

[0018] Figure 1 This is an exploded structural diagram of a stamping die provided in the first embodiment of the present invention;

[0019] Figure 2 for Figure 1 Side view of a medium stamping die;

[0020] Figure 3 for Figure 1 Schematic diagram of the middle clamping block;

[0021] Figure 4 for Figure 1 A schematic diagram showing the positional relationship between the second punch and the first punch;

[0022] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. First die cavity; 2. Second die cavity; 3. Clamping block; 4. Punch; 5. Pressure plate; 6. Telescopic ejector rod; 11. Connecting groove; 12. Slide groove; 21. Slide table; 31. Telescopic hole; 311. Sliding part; 312. Compression part; 32. Clearance groove; 61. Compression boss. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0026] Please see Figure 1-5 The first embodiment of this utility model provides a stamping die, which includes a first die 1, a second die 2, a clamping block 3, a punch 4 and a pressure plate 5. The first die 1 and the clamping block 3 are both connected to an upper template. The second die 2 is telescopically connected to the end of the clamping block 3 away from the upper template and slides against the side of the first die 1. The punch 4 and the pressure plate 5 are both connected to a lower template. The punch 4 is located on one side of the pressure plate 5, and its side away from the lower template is higher than the pressure plate 5 and is against the side of the pressure plate 5. The first die 1 and the second die 2 cooperate with the punch 4 and the pressure plate 5 to stamp and form the product.

[0027] Understandably, when stamping is required, the upper die plate moves towards the lower die plate under external force. At this time, the first die 1, the second die 2, and the clamping block 3 move downwards under the influence of the upper die plate. When the first die 1 and the second die 2 contact the side of the product away from the pressure plate 5, the second die 2 slides relative to the first die 1 under pressure and retracts towards the clamping block 3 until the upper die plate has moved a predetermined stroke. Then, the second die 2 retracts to be flush with the first die 1 and, in conjunction with the first die 1, extrudes and shapes the product. After stamping, the upper die plate moves away from the lower die plate under external force. At this time, the first die 1, the second die 2, and the clamping block 3 move upwards under the influence of the upper die plate. The second die 2 slides relative to the first die 1 and extends away from the clamping block 3. The extension of the second die 2 generates a pushing force on the stamped product, thereby removing the stamped product.

[0028] By contracting and extending the second die 2 toward the clamping block 3, the contraction of the second die 2 can cooperate with the first die 1 to stamp the product during stamping, and the extension of the second die 2 can be used to generate a pushing force on the product after stamping to assist in the product unloading.

[0029] It should be noted that the first die 1 and the second die 2 should fit as tightly as possible to minimize the gap and reduce the impact on the product's appearance after stamping. In this embodiment, after the product is stamped, a coating is applied to cover it to avoid appearance defects caused by gaps.

[0030] Furthermore, a telescopic ejector rod 6 is provided between the second die 2 and the clamping block 3. The two ends of the telescopic ejector rod 6 are connected to the second die 2 and the clamping block 3 respectively, so as to drive the second die 2 to retract towards the clamping block 3 or extend away from the clamping block 3.

[0031] It is understandable that the telescopic rod 6 can be connected at one end to the second die 2 or the clamping block 3, and the other end can be slidably inserted into the clamping block 3 or the second die 2 to form a shaft-hole fit, with an elastic element provided at the gap of the shaft-hole fit. The telescopic rod 6 can also be driven by an external force, and can extend or retract under the drive of an external force to drive the second die 2 to extend or retract, such as by extending or retracting under the drive of a cylinder. As long as the telescopic rod 6 can drive the second die 2 to move relative to the clamping block 3 so that it is flush with the first die 1 when retracted, and can cooperate to stamp the product, and apply an external force to the product to assist in material ejection when extended, it is acceptable.

[0032] Furthermore, one end of the telescopic push rod 6 is connected to the second cavity mold 2, and the clamping block 3 is provided with a telescopic hole 31. The end of the telescopic push rod 6 away from the second cavity mold 2 is slidably inserted into the telescopic hole 31, and an elastic element is provided at the bottom of the telescopic hole 31.

[0033] Understandably, by providing an elastic element at the bottom of the telescopic hole 31, when the second die 2 is pushed towards the clamping block 3 by the product during stamping, the telescopic ejector rod 6 compresses the elastic element, causing it to undergo elastic deformation. When the second die 2 completes stamping, the elastic force of the elastic element is released, and the telescopic ejector rod 6 pushes the second die 2 to extend, thereby achieving material removal.

[0034] Furthermore, the telescopic hole 31 includes a sliding part 311 and a compression part 312. The sliding part 311 and the compression part 312 are connected, and the diameter of the compression part 312 is larger than the diameter of the sliding part 311. An elastic element is disposed in the compression part 312.

[0035] Understandably, the elastic element can be connected to the bottom of the telescopic push rod 6 and the compression part 312 respectively.

[0036] Furthermore, a compression boss 61 is provided at the end of the telescopic ejector rod 6 away from the second die 2. The compression boss 61 is located inside the compression part 312 and is adapted to the shape of the compression part 312.

[0037] Understandably, by providing the compression boss 61, the elastic element can be squeezed by the compression boss 61 when the second die 2 contracts, increasing the compression area. Furthermore, since the diameter of the compression part 312 is larger than the diameter of the sliding part 311, that is, a step is formed between the compression part 312 and the sliding part 311, the compression boss 61 can also abut against the step surface, preventing the telescopic ejector rod 6 from disengaging from the telescopic hole 31 when the second die 2 extends.

[0038] It should be noted that the elastic element can also be connected to the bottom of the telescopic rod 6 and the telescopic hole 31 respectively, so as to prevent the telescopic rod 6 from detaching from the telescopic hole 31.

[0039] Furthermore, a connecting groove 11 is provided on the side of the first die 1 near the clamping block 3, and the clamping block 3 is located in the connecting groove 11.

[0040] It is understandable that by setting the connecting groove 11, the clamping block 3 can be tightly fitted with the first die 1.

[0041] Furthermore, the surfaces on which the first die 1 and the second die 2 slide and fit together are both inclined surfaces.

[0042] Furthermore, a groove 12 is provided on the side of the first die 1 near the second die 2, and a slide table 21 is provided on the second die 2, with the slide table 21 slidingly engaging with the groove 12.

[0043] It is understandable that the sliding engagement between the slide groove 12 and the slide table 21 can play a guiding role when the second die 2 slides relative to the first die 1.

[0044] In this embodiment, there are two slides 12 and two slides 21.

[0045] Furthermore, the side of the punch 4 closest to the pressure plate 5 is an inclined surface, and it is inclined in a direction away from the pressure plate 5.

[0046] Understandably, by tilting one side of the punch 4 away from the pressure plate 5, interference with the ejection of the product can be avoided after stamping.

[0047] Furthermore, a clearance groove 32 is provided on the side of the clamping block 3 near the punch 4 to avoid interference between the clamping block 3 and the punch 4 during the stamping process.

[0048] Compared with the prior art, the stamping die provided by this utility model can achieve stamping and forming of the product during compression and generating a thrust on the product after stamping to assist in the unloading of the product, so that even if the product has a negative angle or a part of its shape that interferes with the stamping direction and affects the unloading, the unloading of the product can be completed by the thrust of the second die.

[0049] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A stamping die, characterized in that, include: The device comprises a first die, a second die, a clamping block, a punch, and a pressure plate. The first die and the clamping block are both connected to an upper template. The second die is telescopically connected to the end of the clamping block away from the upper template and slides against the side of the first die. The punch and the pressure plate are both connected to a lower template. The punch is located on one side of the pressure plate, with its side away from the lower template higher than the pressure plate and against the side of the pressure plate. The first die and the second die cooperate with the punch and the pressure plate to stamp and form the product.

2. A stamping die as described in claim 1, characterized in that: A telescopic push rod is provided between the second die and the clamping block. The two ends of the telescopic push rod are respectively connected to the second die and the clamping block, so as to drive the second die to retract toward the clamping block or extend away from the clamping block.

3. A stamping die as described in claim 2, characterized in that: One end of the telescopic push rod is connected to the second cavity mold. The clamping block is provided with a telescopic hole. The end of the telescopic push rod away from the second cavity mold is slidably inserted into the telescopic hole, and an elastic element is provided at the bottom of the telescopic hole.

4. A stamping die as described in claim 3, characterized in that: The telescopic hole includes a sliding part and a compression part. The sliding part is connected to the compression part, and the diameter of the compression part is larger than the diameter of the sliding part. The elastic element is disposed inside the compression part.

5. A stamping die as described in claim 4, characterized in that: The telescopic push rod has a compression boss at one end away from the second die. The compression boss is located inside the compression part and is adapted to the shape of the compression part.

6. A stamping die as described in claim 1, characterized in that: The first die has a connecting groove on the side near the clamping block, and the clamping block is located in the connecting groove.

7. A stamping die as described in claim 1, characterized in that: The surfaces on which the first and second dies slide in contact are both inclined surfaces.

8. A stamping die as described in claim 1, characterized in that: The first die has a groove on the side near the second die, and the second die has a slide table that slides in conjunction with the groove.

9. A stamping die as described in claim 1, characterized in that: The side of the punch closest to the pressure plate is an inclined surface, and it tilts away from the pressure plate.

10. A stamping die as described in claim 1, characterized in that: The clamping block has a clearance groove on the side near the punch.

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