Automobile part shaping device

Abstract

The utility model discloses an automobile part shaping device. The automobile part shaping device comprises an upper die mechanism and a lower die mechanism, the upper die mechanism at least comprises an upper die base and a female die arranged in the upper die base. A concave cavity into which a to-be-shaped workpiece partially extends is formed in the concave die; the lower die mechanism at least comprises a lower die base, a movable cavity formed in the lower die base and a guide sleeve assembly in sliding fit with the movable cavity. The guide sleeve assembly comprises an outer guide sleeve and an inner guide sleeve partially penetrating through the outer guide sleeve; the top end, facing the upper die base, of the inner guide sleeve is suitable for protruding out of the top end, facing the upper die base, of the outer guide sleeve. When the upper die mechanism and the lower die mechanism do die assembly movement, the female die is suitable for pushing the top end of the inner guide sleeve to enable the inner guide sleeve to slide relative to the outer guide sleeve and then is suitable for pushing the top end of the inner guide sleeve and the top end of the outer guide sleeve at the same time to enable the inner guide sleeve and the outer guide sleeve to move in the direction away from the upper die base at the same time.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts processing equipment, and in particular to an automotive parts shaping device. Background Technology

[0002] The engine sensor is a component in a car. Currently, the protective shell of the engine sensor uses a 0.3mm thick material, which is stretched and shaped to reduce the sidewall material to 0.15mm, half the thickness of the material.

[0003] In terms of appearance, the protective housing of the engine sensor resembles a bell, comprising a smaller cylinder 21 with a smaller outer diameter and a larger cylinder 22 with a larger outer diameter, which are connected through each other. The two cylinders require a high degree of coaxiality. Therefore, during the shaping process, a guide sleeve 3 is used to guide the product to ensure coaxiality between the two cylinders. Based on this, for example... Figure 1 and Figure 2 In the automotive parts forming device shown, the die 1 moves down with the punch press, contacts the semi-finished product 2, and continues to move down. The die 1 squeezes the semi-finished product 2, indirectly removing the guide sleeve 3 from the product, and finally completing the stretching and thinning of the product.

[0004] Based on the aforementioned automotive parts shaping device, it was found through use that during the stretching and shaping process, for products with a large amount of thinning, uneven oil film formed on the product surface or guide gaps (the gap between the guide sleeve and the product) can cause the product to be stretched crooked, which has a significant impact on coaxiality. This leads to uneven material thickness and the formation of dimensionally defective products. When dimensionally defective products are assembled, they will affect the response time of the sensors, which in turn will affect the control system's response to the vehicle, potentially causing unpredictable losses at critical moments.

[0005] Based on the above, in order to reduce the defect rate of products by improving the forming accuracy after stretching and shaping, it is necessary to further optimize and improve the stretching and shaping device used. Utility Model Content

[0006] The purpose of this invention is to provide an automotive parts forming device to solve the technical problem of improving the forming accuracy of automotive parts.

[0007] The automotive parts shaping device of this utility model is implemented as follows:

[0008] An automotive parts shaping device, comprising:

[0009] Upper mold mechanism and lower mold mechanism suitable for relative mold opening and closing movements; among which

[0010] The upper mold mechanism includes at least an upper mold base and a die cavity disposed in the upper mold base; the die cavity has a concave cavity formed therein, which is suitable for the part of the workpiece to be shaped to extend into.

[0011] The lower mold mechanism includes at least a lower mold base, a movable cavity disposed within the lower mold base, and a guide sleeve assembly that slides with the movable cavity;

[0012] The guide sleeve assembly includes an outer guide sleeve and an inner guide sleeve that partially penetrates the outer guide sleeve; and the top part of the inner guide sleeve facing the upper mold base is adapted to protrude from the top part of the outer guide sleeve facing the upper mold base; the outer diameter of the top part of the inner guide sleeve facing the upper mold base is smaller than the inner diameter of the concave cavity.

[0013] When the upper mold mechanism and the lower mold mechanism perform the mold closing movement, the die is first adapted to push the top end of the inner guide sleeve so that the inner guide sleeve slides relative to the outer guide sleeve, and then is adapted to simultaneously push the top ends of the inner guide sleeve and the outer guide sleeve so that the inner guide sleeve and the outer guide sleeve move simultaneously away from the upper mold base.

[0014] In an optional embodiment of this utility model, the outer guide sleeve includes an outer sleeve body and a central through hole formed in the outer sleeve body, penetrating both ends of its axial direction;

[0015] The inner guide sleeve includes an inner sleeve body that partially slides with the central through hole and a central shaft hole formed within the inner sleeve body, penetrating both axial ends therethrough; and

[0016] The axial length of the portion of the inner sleeve body that is suitable for penetrating the central through hole is greater than the axial length of the central through hole.

[0017] In an optional embodiment of this utility model, the outer sleeve body includes an outer longitudinal tube body and an outer transverse base body integrally formed into a T-shaped structure;

[0018] The inner sleeve body comprises an inner longitudinal tube body and an inner transverse base body integrally formed into a T-shape; wherein

[0019] The inner longitudinal tube is adapted to extend through the central through hole along the extension direction of the outer transverse base and the outer longitudinal tube; the axial length of the inner longitudinal tube is greater than the axial length of the central through hole.

[0020] In an optional embodiment of this utility model, the lower mold base further includes a first lower push rod connected to the outer transverse base, and a first lower elastic member connected to the end of the first lower push rod away from the outer transverse base; and

[0021] The lower mold base is also provided with a second lower push rod connected to the inner transverse base, and a second lower elastic member connected to the end of the second lower push rod away from the inner transverse base.

[0022] In an optional embodiment of this invention, the inner transverse substrate is located on one side of the outer transverse substrate facing away from the mold base; and

[0023] The inner transverse base is also provided with a clearance hole suitable for the first lower push rod to pass through.

[0024] In an optional embodiment of this utility model, the lower die mechanism further includes a punch disposed on the lower die base and adapted to simultaneously penetrate the movable cavity and the central shaft hole;

[0025] The top part of the punch facing the upper die mechanism is adapted to protrude from the top part of the inner guide sleeve to support the workpiece to be shaped.

[0026] In an optional embodiment of this utility model, the upper mold mechanism further includes an upper ejector rod disposed within the upper mold base and partially slidingly engaged with the concave cavity;

[0027] The punch is adapted to partially extend into the concave cavity to push the upper ejector pin.

[0028] In an optional embodiment of this utility model, the upper mold base is further provided with an upper elastic element that is connected to the end of the upper ejector rod facing downwards towards the mold base.

[0029] In an optional embodiment of this utility model, the end of the die facing the lower die base is provided with tapered grooves distributed around the concave cavity;

[0030] The conical groove is used to push the outer guide sleeve and the inner guide sleeve.

[0031] In an optional embodiment of this invention, a rounded chamfer is formed at the junction of the bottom edge of the conical groove and the concave cavity.

[0032] By adopting the above technical solution, this utility model has the following beneficial effects: The automotive parts forming device of this utility model, for the guide sleeve assembly used, includes a slidingly fitted outer guide sleeve and an inner guide sleeve, which can realize the positioning of two parts with different outer diameters of the workpiece to be stretched and formed. During the stretching and forming process, when the inner guide sleeve gradually withdraws from the workpiece due to the action of the die, the outer guide sleeve always maintains the guiding and supporting function for the workpiece. This can prevent the workpiece from becoming skewed during the stretching deformation process, thereby affecting the concentricity of the two parts with different outer diameters of the workpiece after stretching and forming. This improves the stability and reliability of the workpiece stretching and forming process and reduces the defect rate of the product formed after the workpiece stretching and forming process. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of an existing automotive parts shaping device in the mold-opening state.

[0034] Figure 2 This is a schematic diagram of an existing automotive parts shaping device in a mold-closed state.

[0035] Figure 3 This is a schematic diagram of the structure of the workpiece to be stretched and shaped, which is applicable to the automotive parts shaping device of this utility model.

[0036] Figure 4 This is a schematic diagram of the automotive parts shaping device of this utility model in the mold-opening state;

[0037] Figure 5 This is a schematic diagram of the structure of the concave die of the automotive parts shaping device of this utility model;

[0038] Figure 6 This is a schematic diagram of the guide sleeve assembly of the automotive parts shaping device of this utility model;

[0039] Figure 7 This is a schematic diagram of the automotive parts shaping device of this utility model in the mold-closed state.

[0040] In the figure: Die 1, Cavity 11, Conical Groove 12, Rounded Chamfer 13, Semi-finished Product 2, Small Cylinder 21, Large Cylinder 22, Guide Sleeve 3, Upper Ejector Rod 41, Upper Elastic Component 42, Upper Fixed Seat 51, First Upper Pad 52, Second Upper Pad 53, Upper Support Seat 54, Outer Tube Body 61, Outer Longitudinal Tube 611, Outer Transverse Base 612, Central Through Hole 62, Inner Tube Body 63, Inner Longitudinal Tube 631, Inner Transverse Base 632, Central Shaft Hole 64, Punch 65, Lower Fixed Seat 71, Movable Cavity 72, Lower Fixed Plate 73, Lower Pad 74, Lower Support Seat 75, First Lower Ejector Rod 81, First Lower Elastic Component 82, Second Lower Ejector Rod 83, Second Lower Elastic Component 84. Detailed Implementation

[0041] To make the contents of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0042] Please see Figures 3 to 7 As shown, this embodiment provides an automotive parts shaping device, including: an upper mold mechanism and a lower mold mechanism suitable for relative mold opening and closing movements; wherein, taking a conventional usage perspective as an example, the lower mold mechanism is below and the upper mold mechanism is above. The mold opening movement between the upper mold mechanism and the lower mold mechanism is achieved by the upward movement of the upper mold mechanism relative to the lower mold mechanism, and the mold closing movement between the upper mold mechanism and the lower mold mechanism is achieved by the downward movement of the upper mold mechanism relative to the lower mold mechanism.

[0043] Next, in detail, the upper mold mechanism includes at least an upper mold base and a die 1 disposed in the upper mold base, an upper ejector rod 41 disposed in the upper mold base and partially slidingly engaged with the cavity 11, and an upper elastic member 42 connected to the end of the upper ejector rod 41 facing away from the lower mold base. The die 1 has a cavity 11 formed within it, suitable for the workpiece to be shaped to partially extend into. The upper ejector rod 41 partially penetrates the cavity 11, and can slide relative to the cavity 11 and move away from the lower mold mechanism. During this process, the upper elastic member 42 is compressed and deformed.

[0044] Based on the above structure, more specifically, in this embodiment, the upper mold base, in conjunction with the accompanying drawings, exemplifies an optional implementation, comprising an upper fixed base 51 for fixing the die 1, a first upper pad 52 connected to the end of the upper fixed base 51 facing away from the lower mold mechanism, a second upper pad 53 connected to one end of the first upper pad 52 facing away from the upper fixed base 51, and an upper support base 54 connected to the end of the second upper pad 53 facing away from the first upper pad 52. A through-cavity for accommodating the upper elastic member 42 and part of the upper ejector rod 41 is provided between the upper support base 54 and the second upper pad 53, and a through hole suitable for the upper ejector rod 41 to pass through is provided in the first upper pad 52. The upper ejector rod 41 is generally T-shaped to prevent it from detaching from the second upper pad 53.

[0045] Secondly, the lower mold mechanism includes at least a lower mold base, a movable cavity 72 disposed within the lower mold base, and a guide sleeve assembly that slides with the movable cavity 72. Specifically, the guide sleeve assembly includes an outer guide sleeve and an inner guide sleeve that partially penetrates the outer guide sleeve. The inner guide sleeve can slide relative to the outer guide sleeve, and the top portion of the inner guide sleeve facing the upper mold base is adapted to protrude beyond the top portion of the outer guide sleeve facing the upper mold base; the outer diameter of the top portion of the inner guide sleeve facing the upper mold base is smaller than the inner diameter of the concave cavity 11.

[0046] Based on the above structure, the outer guide sleeve in this embodiment includes an outer sleeve body 61 and a central through hole 62 formed in the outer sleeve body 61, penetrating both axial ends; the inner guide sleeve includes an inner sleeve body 63 that partially slides with the central through hole 62 and a central shaft hole 64 formed in the inner sleeve body 63, penetrating both axial ends. The axial length of the portion of the inner sleeve body 63 that is adapted to penetrate the central through hole 62 is greater than the axial length of the central through hole 62. Based on this, it should be noted that the lower mold mechanism in this embodiment also includes a punch 65 disposed on the lower mold base and adapted to simultaneously penetrate the movable cavity 72 and the central shaft hole 64; the top part of the punch 65 facing the upper mold mechanism is adapted to protrude from the top part of the inner guide sleeve to support the workpiece to be shaped, and the punch 65 is adapted to partially extend into the concave cavity 11 to push the upper ejector rod 41.

[0047] More specifically, the outer sleeve body 61 includes an outer longitudinal tube 611 and an outer transverse base 612 integrally formed in a T-shape; the inner sleeve body 63 includes an inner longitudinal tube 631 and an inner transverse base 632 integrally formed in a T-shape; wherein the inner longitudinal tube 631 is adapted to penetrate the central through hole 62 along the extension direction of the outer transverse base 612 and the outer longitudinal tube 611; the axial length of the inner longitudinal tube 631 is greater than the axial length of the central through hole 62.

[0048] In this embodiment, the lower mold base, as illustrated in the accompanying drawings, represents an optional implementation. It includes a lower fixed base 71 for forming the movable cavity 72, a lower fixed plate 73 connected to the end of the lower fixed base 71 facing away from the upper mold mechanism, a lower pad 74 connected to one end of the lower fixed plate 73 facing away from the lower fixed base 71, and a lower support base 75 connected to the end of the lower pad 74 facing away from the lower fixed plate 73. The lower fixed plate 73 has a mounting hole communicating with the movable cavity 72. The end of the lower fixed base 71 facing the upper mold mechanism has an opening that penetrates the movable cavity 72 and is suitable for the outer longitudinal tube 611 and the inner longitudinal tube 631 to pass through. The punch 65 is partially fixed in the mounting hole, and after penetrating the movable cavity 72, the portion of the punch 65 extends out from the opening to the outside of the lower fixed base 71 facing the upper mold mechanism.

[0049] Based on the above structure, when the upper mold mechanism and the lower mold mechanism perform the mold closing movement, the die 1 is first adapted to push the top end of the inner guide sleeve so that the inner guide sleeve slides relative to the outer guide sleeve, and then is adapted to push the top ends of the inner guide sleeve and the outer guide sleeve at the same time so that the inner guide sleeve and the outer guide sleeve move simultaneously away from the upper mold base.

[0050] To accommodate the movement requirements of the outer and inner guide sleeves, this embodiment also incorporates the following design:

[0051] The lower mold base also includes a first lower ejector rod 81 connected to the outer transverse base 612, and a first lower elastic member 82 connected to the end of the first lower ejector rod 81 away from the outer transverse base 612. The first lower elastic member 82 is disposed in the lower support seat 75, and one end of the first lower ejector rod 81 is disposed in the lower support seat 75. The first lower ejector rod 81 passes through the lower pad 74 and the lower fixing plate 73 sequentially before extending into the movable cavity 72 and connecting to the outer transverse base 612. Similarly, the lower mold base also includes a second lower ejector rod 83 connected to the inner transverse base 632, and a second lower elastic member 84 connected to the end of the second lower ejector rod 83 away from the inner transverse base 632. The second lower elastic member 84 is disposed in the lower support seat 75, and one end of the second lower ejector rod 83 is disposed in the lower support seat 75. The second lower ejector rod 83 passes through the lower pad 74 and the lower fixing plate 73 sequentially before extending into the movable cavity 72 and connecting to the inner transverse base 632. It should be noted that the inner transverse base 632 is located on one side of the outer transverse base 612 facing away from the mold base; and the inner transverse base 632 is also provided with a clearance hole suitable for the first lower ejector rod 81 to pass through.

[0052] Next, it is necessary to explain that, for the process of the die 1 pushing the inner guide sleeve and the outer guide sleeve, this embodiment also includes the following design:

[0053] The end of the die 1 facing the lower die base is provided with tapered grooves 12 distributed around the concave cavity 11; the tapered grooves 12 are used to push the outer guide sleeve and the inner guide sleeve. The maximum inner diameter of the tapered groove 12 is larger than the outer diameter of the outer longitudinal tube 611 of the outer guide sleeve, and the outer diameter of the inner longitudinal tube 631 facing the inner guide sleeve is smaller than the inner diameter of the concave cavity 11. This ensures that the groove wall of the tapered groove can form a pushing effect on the outer guide sleeve and the inner guide sleeve as the upper die mechanism moves to the lower die mechanism.

[0054] Based on the above structure, it is also necessary to explain that since the workpiece to be shaped is mounted on the part of the punch 65, the outer longitudinal tube 611 and the inner longitudinal tube 631 that extend out of the lower fixed seat 71 towards the outer side of the upper mold mechanism, during the mold closing process of the upper mold mechanism and the lower mold mechanism, the punch 65 pushes the upper ejector rod 41 through the workpiece, so that the punch 65 carries the workpiece into the concave cavity 11. In this process, in order to prevent the bottom of the tapered groove (for the tapered groove in this embodiment, its bottom is located at the end that intersects with the concave cavity 11, while the groove opening is located at the end that is away from the concave cavity 11) from forming a cutting damage to the outer wall surface of the workpiece at the junction of the edge of the tapered groove 12 and the concave cavity 11, in an optional implementation, an arc chamfer 13 is formed at the junction of the bottom edge of the tapered groove 12 and the concave cavity 11.

[0055] In summary, the automotive parts shaping device of this embodiment can be applied to, for example, but not limited to, protective housings for engine sensors. Taking the protective housing of an engine sensor as an example, it includes a small cylinder 21 with a smaller outer diameter and a large cylinder 22 with a larger outer diameter that are connected through it (the large cylinder 22 includes a frustoconical transition portion connected to the small cylinder 21; in the following description of embodiments, the transition portion is assumed to be a part of the structure of the large cylinder 22). When the upper mold mechanism and the lower mold mechanism are in the open mold state, the punch 65 faces the end of the upper mold mechanism. The inner longitudinal tube 631 protrudes from the end of the inner longitudinal tube 631 facing the upper mold mechanism, and the end of the inner longitudinal tube 631 facing the upper mold mechanism protrudes from the end of the outer longitudinal tube 611 facing the upper mold mechanism. The protective shell of the engine sensor before stretching and shaping (hereinafter referred to as semi-finished product 2) is inserted from the end of the punch 65 facing the upper mold mechanism. In the initial state, the inner longitudinal tube 631 plays the role of internal support for the small cylinder 21 of the protective shell of the semi-finished product 2, while the outer longitudinal tube 611 and the inner longitudinal tube 631 together play the role of internal support for the large cylinder 22 of the semi-finished product 2. During the mold closing process of the upper and lower mold mechanisms, as the upper mold mechanism gradually descends relative to the lower mold mechanism, the punch 65, carrying the semi-finished product 2, gradually enters the concave cavity 11. The tapered groove of the concave mold 1 gradually generates a pushing effect on the inner longitudinal tube 631, causing the inner longitudinal tube 631 to move away from the upper mold mechanism and gradually exit the interior of the small cylinder 21 of the semi-finished product 2, until the inner longitudinal tube 631 moves into the interior of the large cylinder 22 of the semi-finished product 2. At this point, the stretching and shaping operation of the small cylinder 21 of the semi-finished product 2 is completed. At this time, as the upper mold mechanism moves further downward, the tapered groove of the concave mold 1 simultaneously generates a pushing effect on both the inner longitudinal tube 631 and the outer longitudinal tube 611, causing both the outer longitudinal tube 611 and the inner longitudinal tube 631 to move away from the upper mold mechanism. At this point, the stretching and shaping operation of the large cylinder 22 is generated. After the stretching and shaping operation of the entire semi-finished product 2 is completed, the upper mold mechanism moves upward relative to the lower mold mechanism, while the inner guide sleeve and the outer guide sleeve are gradually reset under the action of the first lower elastic element 82 and the second lower elastic element. The demolding of the protective shell of the engine sensor is achieved by the reset of the inner guide sleeve and the outer guide sleeve.

[0056] The above specific embodiments further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above are only specific embodiments of this utility model and are not intended to limit this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0057] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0058] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0059] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0060] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0061] In this invention, unless otherwise expressly specified and limited, "above or below" the first feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on" the first feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the first feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

Claims

1. An automotive parts shaping device, characterized in that, include: Upper mold mechanism and lower mold mechanism suitable for relative mold opening and closing movements; among which The upper mold mechanism includes at least an upper mold base and a die cavity disposed in the upper mold base; the die cavity has a concave cavity formed therein, which is suitable for the part of the workpiece to be shaped to extend into. The lower mold mechanism includes at least a lower mold base, a movable cavity disposed within the lower mold base, and a guide sleeve assembly that slides with the movable cavity; The guide sleeve assembly includes an outer guide sleeve and an inner guide sleeve that partially penetrates the outer guide sleeve; and the top part of the inner guide sleeve facing the upper mold base is adapted to protrude from the top part of the outer guide sleeve facing the upper mold base; the outer diameter of the top part of the inner guide sleeve facing the upper mold base is smaller than the inner diameter of the concave cavity. When the upper mold mechanism and the lower mold mechanism perform the mold closing movement, the die is first adapted to push the top end of the inner guide sleeve so that the inner guide sleeve slides relative to the outer guide sleeve, and then is adapted to simultaneously push the top ends of the inner guide sleeve and the outer guide sleeve so that the inner guide sleeve and the outer guide sleeve move simultaneously away from the upper mold base.

2. The automotive parts shaping device according to claim 1, characterized in that, The outer guide sleeve includes an outer sleeve body and a central through hole formed in the outer sleeve body, penetrating both ends of its axial direction; The inner guide sleeve includes an inner sleeve body that partially slides with the central through hole and a central shaft hole formed within the inner sleeve body, penetrating both axial ends therethrough; and The axial length of the portion of the inner sleeve body that is suitable for penetrating the central through hole is greater than the axial length of the central through hole.

3. The automotive parts shaping device according to claim 2, characterized in that, The outer sleeve body includes an outer longitudinal tube body and an outer transverse base body integrally formed into a T-shaped structure; The inner sleeve body comprises an inner longitudinal tube body and an inner transverse base body integrally formed into a T-shape; wherein The inner longitudinal tube is adapted to extend through the central through hole along the extension direction of the outer transverse base and the outer longitudinal tube; the axial length of the inner longitudinal tube is greater than the axial length of the central through hole.

4. The automotive parts shaping device according to claim 3, characterized in that, The lower mold base is further provided with a first lower push rod connected to the outer transverse base, and a first lower elastic element connected to the end of the first lower push rod away from the outer transverse base; and The lower mold base is also provided with a second lower push rod connected to the inner transverse base, and a second lower elastic member connected to the end of the second lower push rod away from the inner transverse base.

5. The automotive parts shaping device according to claim 4, characterized in that, The inner transverse matrix is ​​located on one side of the outer transverse matrix facing away from the mold base; and The inner transverse base is also provided with a clearance hole suitable for the first lower push rod to pass through.

6. The automotive parts shaping device according to any one of claims 2 to 5, characterized in that, The lower die mechanism also includes a punch disposed on the lower die base and adapted to simultaneously penetrate the movable cavity and the central shaft hole; The top part of the punch facing the upper die mechanism is adapted to protrude from the top part of the inner guide sleeve to support the workpiece to be shaped.

7. The automotive parts shaping device according to claim 6, characterized in that, The upper mold mechanism also includes an upper ejector rod disposed within the upper mold base and partially slidingly engaged with the concave cavity; The punch is adapted to partially extend into the concave cavity to push the upper ejector pin.

8. The automotive parts shaping device according to claim 7, characterized in that, The upper mold base is also provided with an upper elastic element that is connected to the end of the upper ejector rod facing downwards from the mold base.

9. The automotive parts shaping device according to any one of claims 2 to 5, characterized in that, The end of the die facing the lower die base is provided with conical grooves distributed around the concave cavity; The conical groove is used to push the outer guide sleeve and the inner guide sleeve.

10. The automotive parts shaping device according to claim 9, characterized in that, The bottom edge of the conical groove has a rounded chamfer at the junction with the concave cavity.

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