An automobile part stamping forming die

Abstract

The utility model discloses an automobile parts stamping forming die, automobile parts stamping forming die includes the box, the box inner wall is provided with the support seat, be provided with the forming die on the support seat, the bottom plate of inside box can be set up and displace up and down, the bottom of the cavity of forming die is provided with the hole, be provided with the ejector rod in the box, the upper end of ejector rod is located in the hole, and its lower end extends to the below of bottom plate, the bottom plate with the ejector rod can slide to each other, the diameter of ejector rod is less than the diameter of hole. The forming die in the prior art, the cooling liquid is difficult to contact with the outer wall of metal piece fully, meanwhile, after quenching, the redundant cooling liquid is easy to accumulate in the cavity of die and is difficult to discharge, which influences the follow -up stamping use.

Description

Technical Field

[0001] This utility model relates to stamping dies, specifically to a stamping die for automotive parts. Background Technology

[0002] After hot pressing, metal sheets require immediate quenching to cool and harden the material while its shape is precisely fixed, physically locking in the deformed geometry and eliminating the effects of high-temperature springback and creep. For example, Chinese patent CN101394950B provides a hot forming die for a stamping forming device, which stamps a heated metal sheet and sprays coolant onto the formed body for cooling. The die includes: a main supply passage for the coolant; multiple branch supply passages branching from the main supply passage, including nozzles that spray coolant out of the die; and nozzle components fixed to the nozzle side of each branch supply passage, using through holes to limit the amount of coolant passing through. In such prior art forming dies, the coolant is difficult to fully contact the outer wall of the metal part. Furthermore, after quenching, excess coolant tends to accumulate in the die cavity and is difficult to drain, affecting subsequent stamping operations. Utility Model Content

[0003] The purpose of this invention is to provide a stamping die for automotive parts, which solves the problems in the existing forming die where the coolant is difficult to fully contact the outer wall of the metal part, and where excess coolant tends to accumulate in the die cavity after quenching and is difficult to drain, affecting subsequent stamping.

[0004] To achieve the above objectives, this utility model provides a stamping die for automotive parts. The stamping die includes a housing, a support base is provided on the inner wall of the housing, a forming die is provided on the support base, a bottom plate is provided inside the housing that can be vertically displaced, a hole is provided at the bottom of the cavity of the forming die, a push rod is provided inside the housing, the upper end of the push rod is located in the hole, and its lower end extends to the bottom plate. The bottom plate and the push rod can slide relative to each other, and the diameter of the push rod is smaller than the diameter of the hole.

[0005] Preferably, a first cylinder is provided inside the housing, located below the base plate, and the piston rod of the first cylinder is connected to the base plate.

[0006] Preferably, the housing is further provided with a second cylinder located below the bottom plate, and a plate is connected to the piston rod of the second cylinder, the plate being connected to the lower end of the top rod.

[0007] Preferably, a sliding sleeve is provided on the base plate, a sealing ring is provided inside the sliding sleeve, and the top rod is slidably disposed inside the sliding sleeve.

[0008] Preferably, a groove is formed on the side of the base plate, and a sealing strip is provided in the groove.

[0009] Preferably, the surface of the molding die is provided with a plurality of positioning blocks.

[0010] Beneficial effects: This utility model provides a stamping die for automotive parts. The stamping die includes a housing, a support base is provided on the inner wall of the housing, a forming die is provided on the support base, a bottom plate is provided inside the housing that can be moved vertically, a hole is provided at the bottom of the cavity of the forming die, a push rod is provided inside the housing, the upper end of the push rod is located in the hole, and its lower end extends to the bottom plate. The bottom plate and the push rod can slide relative to each other, and the diameter of the push rod is smaller than the diameter of the hole. The casing contains coolant. Initially, the coolant level is below the forming mold, which has a cavity on its upper surface. During operation, a heated metal sheet is placed on the mold surface, and the upper mold (not shown in the diagram) is pressed down by a drive mechanism to form the sheet within the cavity. After completion, the push rod moves upward, ejecting the workpiece a certain distance out of the cavity. Then, the bottom plate moves upward a certain distance, allowing coolant to enter the cavity through holes on the upper and lower surfaces of the mold. When the coolant enters the cavity from the upper surface, it makes full contact with the outer wall of the workpiece (there are tiny gaps between the outer wall of the workpiece and the cavity to allow coolant entry). Because at least part of the upper part of the workpiece is ejected, coolant will not enter the interior of the workpiece, and the ejected workpiece is easy to unload. When the bottom plate moves downward to reset, the coolant in the cavity can drain out through the holes below, without affecting subsequent use.

[0011] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the following detailed description to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0013] Figure 1 This is a structural diagram of the stamping die for automotive parts provided by this utility model;

[0014] Figure 2 This is an internal structural diagram of the stamping die for automotive parts provided by this utility model;

[0015] Figure 3 This is a first state diagram of the stamping die for automotive parts provided by this utility model;

[0016] Figure 4 This is the second state diagram of the stamping die for automotive parts provided by this utility model.

[0017] Explanation of reference numerals in the attached figures

[0018] 1-Box body; 2-Forming mold; 3-Positioning block; 4-Support base; 5-Base plate; 6-Top rod; 7-First cylinder; 8-Second cylinder; 9-Sliding sleeve; 10-Plate body. Detailed Implementation

[0019] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.

[0020] like Figure 1-4 As shown: This utility model provides a stamping die for automotive parts. The stamping die includes a housing 1, a support base 4 on the inner wall of the housing 1, a forming die 2 on the support base 4, a bottom plate 5 that can be vertically displaced inside the housing 1, a hole at the bottom of the cavity of the forming die, and a push rod 6 inside the housing 1. The upper end of the push rod 6 is located inside the hole, and its lower end extends below the bottom plate 5. The bottom plate 5 and the push rod 6 can slide relative to each other. The diameter of the push rod 6 is smaller than the diameter of the hole. The housing 1 contains coolant. In the initial state, such as... Figure 3 As shown, the coolant level is below the forming mold 2. The upper surface of the forming mold 2 has a cavity. During operation, the heated metal sheet is placed on the mold surface, and the upper mold is pressed down by a drive mechanism (not shown in the figure) so that the sheet is stamped and formed within the cavity. After completion, as shown... Figure 4 As shown, the drive pin 6 moves upward, pushing the workpiece out of the cavity a certain distance. Then, the base plate moves upward a certain distance, allowing coolant to enter the mold cavity through the holes on the upper and lower surfaces of the mold. When the coolant enters the cavity from the upper surface of the mold, it can fully contact the outer wall of the workpiece (there are tiny gaps between the outer wall of the workpiece and the cavity, allowing coolant to enter). Since at least part of the upper end of the workpiece is pushed out, coolant will not enter the interior of the workpiece, and the pushed-out workpiece is easy to unload. When the base plate moves downward to reset, the coolant in the cavity can be discharged through the holes below, without affecting subsequent use.

[0021] In a preferred embodiment of this utility model, in order to drive the bottom plate to move up and down, a first cylinder 7 located below the bottom plate 5 is provided inside the housing 1, and the piston rod of the first cylinder 7 is connected to the bottom plate 5.

[0022] In a preferred embodiment of this utility model, in order to drive the top rod to move up and down, a second cylinder 8 located below the bottom plate 5 is also provided inside the housing 1. A plate 10 is connected to the piston rod of the second cylinder 8, and the plate 10 is connected to the lower end of the top rod 6.

[0023] In a preferred embodiment of this utility model, in order to improve the sealing between the top rod and the bottom plate, a sliding sleeve 9 is provided on the bottom plate 5, a sealing ring is provided inside the sliding sleeve, and the top rod 6 is slidably disposed inside the sliding sleeve 9.

[0024] In a preferred embodiment of this utility model, in order to improve the sealing between the bottom plate and the inner wall of the box, a groove is formed on the side of the bottom plate 5, and a sealing strip is provided in the groove.

[0025] In a preferred embodiment of this utility model, in order to position the sheet material placed on the surface of the molding mold 2, a plurality of positioning blocks 3 are provided on the surface of the molding mold 2.

[0026] In a preferred embodiment of this utility model, a drain valve (not shown in the figure) can be provided on the side of the box 1 for draining water from the box 1.

[0027] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0028] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable way without contradiction. In order to avoid unnecessary repetition, this utility model will not describe the various possible combinations separately.

[0029] Furthermore, various different embodiments of this utility model can be combined in any way, as long as they do not violate the spirit of this utility model, they should also be regarded as the content disclosed by this utility model.

Claims

1. A stamping die for automotive parts, characterized in that, The stamping die for automotive parts includes a housing (1), a support base (4) is provided on the inner wall of the housing (1), a forming die (2) is provided on the support base (4), a bottom plate (5) is provided inside the housing (1) and can be moved up and down, a hole is provided at the bottom of the cavity of the forming die, a push rod (6) is provided inside the housing (1), the upper end of the push rod (6) is located in the hole, and its lower end extends to the bottom plate (5), the bottom plate (5) and the push rod (6) can slide relative to each other, and the diameter of the push rod (6) is smaller than the diameter of the hole.

2. The stamping die for automotive parts according to claim 1, characterized in that, The housing (1) is equipped with a first cylinder (7) located below the base plate (5), and the piston rod of the first cylinder (7) is connected to the base plate (5).

3. The stamping die for automotive parts according to claim 2, characterized in that, The housing (1) is also equipped with a second cylinder (8) located below the bottom plate (5). A plate (10) is connected to the piston rod of the second cylinder (8), and the plate (10) is connected to the lower end of the top rod (6).

4. The stamping die for automotive parts according to claim 3, characterized in that, A sliding sleeve (9) is provided on the base plate (5), and a sealing ring is provided inside the sliding sleeve. The top rod (6) is slidably disposed inside the sliding sleeve (9).

5. The stamping die for automotive parts according to claim 4, characterized in that, The bottom plate (5) has a groove formed on its side, and a sealing strip is provided in the groove.

6. The stamping die for automotive parts according to claim 5, characterized in that, The surface of the molding die (2) is provided with multiple positioning blocks (3).

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