High-precision aluminum alloy stamping die

Abstract

The utility model discloses a high-precision aluminum alloy stamping die, and relates to the technical field of stamping dies. A die main body is arranged on the base and comprises an upper die and a lower die, a plurality of groups of guide devices are arranged between the upper die and the lower die, the lower die is provided with a concave cavity, the upper die is provided with a convex block, the convex block corresponds to the concave cavity, a power device for providing pressure is arranged on the bearing frame, a limiting plate is arranged between the upper die and the bearing frame, and a limiting hole and a limiting pipe are arranged on the limiting plate. The concave cavity is arranged to be a workpiece profiling cavity, and shaping of a machined workpiece is facilitated; the bearing plate is provided with a limiting hole and a limiting pipe, the limiting hole and the limiting pipe are used for limiting the force output shaft and improving the punching precision, the limiting pipe can also be used for correcting and limiting the force output shaft, a protection effect is provided for the force output shaft, and the probability of deformation of the force output shaft is reduced; the multiple sets of guiding devices are arranged, accurate guiding is provided, meanwhile, a good buffering effect is provided, impact damage to the stamping die is reduced, and the service life of the stamping die is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a high-precision aluminum alloy stamping die. Background Art

[0002] Aluminum alloy is a metal with high hardness and light weight. Workpieces made of aluminum alloy have excellent performance and are widely used in various industries. Aluminum alloy workpieces are usually produced using stamping dies. Stamping dies are a pressure processing method that applies high pressure to the material on the die at room temperature, causing it to separate or plastically deform, thereby obtaining the desired workpiece.

[0003] During stamping processing, the stamping die needs to have high precision to process workpieces that meet the specifications. The precision control of existing stamping dies generally uses a guide mechanism to make the upper and lower dies rise and fall vertically. Although the upper and lower dies adopt guide control, after the stamping die is used for a long time, the part of the power mechanism that provides pressure may be deformed after multiple impacts, thereby offsetting the pressure applied to the die and causing damage to the die. Over time, the pressing accuracy of the stamping die becomes less precise, the defective rate of the workpiece produced increases, and it is not conducive to product production. Utility Model Content

[0004] In response to the shortcomings of the existing technology, the purpose of the present utility model is to provide a high-precision aluminum alloy stamping die. By setting a limit plate with a limit hole, the output shaft is always raised and lowered along the same path, and the limit tube corrects and limits it, thereby achieving the technical purpose of improving the stamping accuracy and increasing the service life of the stamping die.

[0005] The above technical purpose of the present utility model is achieved through the following technical solutions: a high-precision aluminum alloy stamping mold, including a base and a supporting frame, a mold body is arranged on the base, the mold body includes an upper mold and a lower mold, the lower mold is arranged on the base, a guide device is provided between the upper mold and the lower mold, the lower mold is provided with a concave cavity, the upper mold is provided with a protrusion, the protrusion is arranged directly above the concave cavity, the protrusion corresponds to the concave cavity, at least a part of the supporting frame is arranged above the base, a power device is provided on the supporting frame, a limit plate is provided between the upper mold and the supporting frame, a limit hole is opened in the middle of the limit plate, and the output shaft of the power device is connected to the upper mold.

[0006] The present invention is further configured as follows: the supporting frame includes a cover plate and a supporting column, and the supporting columns are provided with at least four, and the four supporting columns are respectively arranged at the four corners of the lower end surface of the cover plate, the supporting columns are connected to the base, and the limiting plate is arranged between the four supporting columns, and each of the supporting columns is provided with a receiving groove on the side facing the limiting plate, and at least a part of the limiting plate extends into the receiving groove, and the upper end surface of the limiting plate is provided with a limiting tube, and the limiting tube is communicated with the limiting hole, the power device passes through the cover plate, and the power device is located directly above the limiting tube, and the output shaft extends out of the part of the power device, which passes through the limiting tube and the limiting hole respectively and is connected to the top of the upper mold.

[0007] The present invention is further configured as follows: an installation opening is opened in the middle of the cover plate, the power device is placed in the installation opening, the power device is one of a cylinder, a hydraulic cylinder, and a servo motor, a metal reinforcement is also provided between the power device and the limit plate, the two ends of the metal reinforcement are respectively fixedly connected to the power device and the limit plate, the limit plate is a rectangular metal plate, the limit tube and the limit plate are integrally formed, the height of the limit tube is 1-3 cm, and the inner wall of the limit tube is coated with a lubricating layer.

[0008] The utility model is further configured as follows: the guide device includes a guide tube arranged on the upper mold and a guide column arranged on the lower mold, at least a portion of the guide column extends into the guide tube, a spring is sleeved on the guide column, a buffer pad is provided on the top of the guide column, the buffer pad is adhered to the guide column, the buffer pad is a micro-elastic rubber pad, and a plurality of guide columns are symmetrically arranged.

[0009] The utility model is further configured as follows: the guide tube is arranged on the lower end surface of the upper mold, 2-6 guide tubes are provided, the guide column is arranged on the upper end surface of the lower mold, and the guide column corresponds to the guide tube one by one.

[0010] The utility model is further configured as follows: the concave cavity is a workpiece-shaped cavity, when the convex block is pressed down, at least a part of it extends into the concave cavity, the upper die can also be provided with a punch and a die cutter, and the power device is used to drive the upper die to rise and fall.

[0011] To sum up, the utility model has the following beneficial effects: the concave cavity is set as a workpiece-imitation cavity, which is conducive to the shaping of the processed workpiece; the limiting holes and limiting tubes set on the supporting plate are used to limit the output shaft, thereby improving the stamping accuracy, and the limiting tube can also be used to correct the limiting of the output shaft, providing a protective effect for the output shaft and reducing the probability of deformation of the output shaft; the guide device is provided with multiple groups, which not only provides precise guidance, but also provides a better buffering effect, reduces the impact damage to the stamping die, and increases the service life of the stamping die. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 This is a schematic diagram of the mold main body structure of the present utility model.

[0014] In the figure: 1. Base; 2. Carrying frame; 21. Cover plate; 22. Carrying column; 3. Mold body; 4. Upper mold; 41. Bump; 5. Lower mold; 51. Cavity; 6. Guide device; 61. Guide tube; 62. Guide column; 63. Spring; 7. Power device; 71. Output shaft; 8. Limit plate; 81. Limit hole; 82. Limit tube; 9. Metal reinforcement. DETAILED DESCRIPTION

[0015] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0016] like Figure 1 、 Figure 2 As shown, the utility model is a high-precision aluminum alloy stamping die, which includes a base 1 and a carrier 2, and a die body 3 is arranged between the base 1 and the carrier 2; specifically, the die body 3 includes an upper die 4 and a lower die 5, wherein the lower die 5 is arranged on the base 1, and multiple groups of guide devices 6 are arranged between the upper die 4 and the lower die 5, that is, each guide tube 61 and its corresponding guide column 62 are a group, preferably, the guide devices 6 are arranged in six groups; the carrier 2 is composed of a cover plate 21 and multiple bearing columns 22, and the multiple bearing columns 22 are all arranged between the base 1 and the cover plate 21, and there are four bearing columns 22, which are respectively arranged at the four corners of the lower end surface of the cover plate 21, and a limit plate 8 is provided between the four bearing columns 22, and a limit hole 81 is opened in the middle of the limit plate 8. A limiting tube 82 is provided on the end face of the limiting plate 8 above the limiting hole 81. The power unit 7 is installed in the mounting port of the cover plate 21. The power unit 7 adopts a hydraulic cylinder. The upper part of the power unit 7 is located above the cover plate 21, and the lower part is located below the cover plate 21. The power shaft of the power unit 7 passes downward through the limiting tube 82 and the limiting hole 81 respectively and is connected to the upper end face of the upper mold 4. The height of the limiting tube 82 is set to 3 cm. When in use, the power unit 7 drives the output shaft 71 to move downward, and the output shaft 71 synchronously drives the upper mold 4 to move downward until the protrusion 41 on the lower end face of the upper mold 4 is pressed into the concave cavity 51, and the aluminum alloy material placed on the upper end face of the lower mold 5 is punched out of the corresponding shape. The protrusion 41 of the upper mold 4 can be replaced with a punch or a die cutter according to the application scenario to realize punching or trimming of the aluminum alloy material.

[0017] like Figure 1As shown, the four supporting columns 22 are arranged in a rectangle, and a receiving groove is provided on one side of the supporting column 22 facing the limit plate 8, which is used to accommodate a corner of the limit plate 8, and the receiving groove provides a forming and fixing function for the limit plate 8; the upper mold 4 is arranged below the limit plate 8, and the limit plate 8 is used to limit the upward movement distance of the upper mold 4, and the part where the lower end surface of the limit plate 8 contacts the upper mold 4 can be installed with a pressure sensor; the power unit 7 is extended into the mounting hole and fixedly installed. After the power unit 7 is installed in place, the metal reinforcement 9 is locked at one end to the side of the power unit 7 and the other end to the upper end surface of the limit plate 8. The metal reinforcement 9 is a "Z"-shaped stainless steel sheet with screw holes at both ends. There are at least two metal reinforcements 9, which are respectively arranged on the left and right sides of the power unit 7 to strengthen and fix the power unit 7.

[0018] like Figure 1 、 Figure 2 As shown, six groups of guide devices 6 are arranged between the upper mold 4 and the lower mold 5. The guide columns 62 are arranged in a row of three and are arranged on the lower mold 5 on both sides of the cavity 51 in pairs. The guide tubes 61 are arranged in a row of three and are arranged on the upper mold 4 on both sides of the protrusion 41 in pairs. The guide columns 62 are connected to the guide tubes 61 in a one-to-one correspondence. The guide tubes 61 and the guide columns 62 are perpendicular to each other. At least a part of the guide columns 62 extends into the guide tubes 61, and each guide column 62 is provided with a spring 63. The bottom of the spring 63 is fixed on the lower mold 5. The top of the guide column 62 is adhered with a buffer pad. When the upper mold 4 moves from top to bottom in use, the guide columns 62 are constantly Inserted into the guide tube 61, the lower end of the guide tube 61 presses the spring 63 downward, and there is a certain gap between the guide column 62 and the inner wall of the guide tube 61, which is no more than 0.03mm, until the protrusion 41 is pressed into the concave cavity 51. At this time, the spring 63 is compressed to the bottom of the guide column 62, and the buffer pad on the top of the guide column 62 contacts the top surface of the inner cavity of the guide tube 61. After the stamping is completed, the power device 7 drives the output shaft 71 to drive the upper mold 4 to rise, and the guide column 62 gradually disengages from the guide tube 61, and the spring 63 begins to reset. When the upper mold 4 rises to the top, the spring 63 is completely reset, and the end head of the guide column 62 is located in the guide tube 61.

[0019] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A high-precision aluminum alloy stamping die, characterized by: The invention comprises a base (1) and a carrier (2), wherein a mold body (3) is provided on the base (1), and the mold body (3) comprises an upper mold (4) and a lower mold (5), wherein the lower mold (5) is provided on the base (1), a guide device (6) is provided between the upper mold (4) and the lower mold (5), the lower mold (5) is provided with a concave cavity (51), the upper mold (4) is provided with a convex block (41), the convex block (41) is provided just above the concave cavity (51), and the convex block (41) corresponds to the concave cavity (51), at least a part of the carrier (2) is provided above the base (1), a power device (7) is provided on the carrier (2), a limiting plate (8) is provided between the upper mold (4) and the carrier (2), a limiting hole (81) is provided through the middle of the limiting plate (8), and an output shaft (71) of the power device (7) is connected to the upper mold (4).

2. The high-precision aluminum alloy stamping die according to claim 1, characterized in that: The support frame (2) includes a cover plate (21) and a support column (22). There are at least four support columns (22). The four support columns (22) are respectively arranged at the four corners of the lower end surface of the cover plate (21). The support columns (22) are connected to the base (1). The limiting plate (8) is arranged between the four support columns (22). Each support column (22) has a receiving groove on one side facing the limiting plate (8). At least one of the limiting plates (8) The upper end surface of the limiting plate (8) is provided with a limiting tube (82), the limiting tube (82) is communicated with the limiting hole (81), the power device (7) passes through the cover plate (21), the power device (7) is located directly above the limiting tube (82), and the output shaft (71) extends out of the power device (7), passes through the limiting tube (82) and the limiting hole (81) respectively, and is connected to the top of the upper mold (4).

3. The high-precision aluminum alloy stamping die according to claim 2, characterized in that: A mounting opening is provided in the middle of the cover plate (21), and the power device (7) is placed in the mounting opening. The power device (7) is one of a cylinder, a hydraulic cylinder, and a servo motor. A metal reinforcement (9) is further provided between the power device (7) and the limiting plate (8). The two ends of the metal reinforcement (9) are respectively fixedly connected to the power device (7) and the limiting plate (8). The limiting plate (8) is a rectangular metal plate. The limiting tube (82) and the limiting plate (8) are integrally formed. The height of the limiting tube (82) is 1-3 cm, and the inner wall of the limiting tube (82) is coated with a lubricating layer.

4. The high-precision aluminum alloy stamping die according to claim 1, characterized in that: The guide device (6) includes a guide tube (61) arranged on the upper mold (4) and a guide column (62) arranged on the lower mold (5). At least a portion of the guide column (62) extends into the guide tube (61). A spring (63) is sleeved on the guide column (62). A buffer pad is provided on the top of the guide column (62). The buffer pad is adhered to the guide column (62). The buffer pad is a micro-elastic rubber pad. The guide column (62) is symmetrically provided with multiple.

5. The high-precision aluminum alloy stamping die according to claim 4, characterized in that: The guide tube (61) is arranged on the lower end surface of the upper mold (4), and there are 2-6 guide tubes (61). The guide column (62) is arranged on the upper end surface of the lower mold (5), and the guide column (62) corresponds to the guide tube (61) one by one.

6. The high-precision aluminum alloy stamping die according to claim 1, characterized in that: The concave cavity (51) is a workpiece-shaped cavity. When the convex block (41) is pressed downward, at least a portion of it extends into the concave cavity (51). The upper die (4) can also be provided with a punch and a die cutter. The power device (7) is used to drive the upper die (4) to rise and fall.

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