Punch forming die for automobile fuel tank shell

Abstract

The utility model discloses an automobile fuel tank shell punch forming die which comprises a punching unit, a forming unit and a punching unit, the punching unit comprises a supporting table, the side face of the supporting table is fixedly connected with an L-shaped plate, a hydraulic telescopic rod is fixedly installed at the bottom of the L-shaped plate, the output end of the hydraulic telescopic rod is fixedly connected with a fixing plate, and an upper die is fixed to the bottom of the fixing plate through bolts; and the forming unit comprises a movable plate movably arranged at the top of the supporting table, and a plurality of limiting rods are fixedly connected to the bottom of the movable plate. The height of the door-shaped plate can be adjusted by rotating the threaded rod so that the movable plate can adapt to lower dies of different heights, in the stamping process of the automobile fuel tank, the upper die presses the demolding rod into the circular groove downwards, after stamping is completed, the second spring pushes the demolding rod to ascend so that a formed shell can be separated from the lower dies, and then the automobile fuel tank can be stamped. Therefore, workers can take out the shell quickly and conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping of fuel tank shells, in particular to a stamping die for an automobile fuel tank shell. Background Art

[0002] The stamping die for an automobile fuel tank shell is an indispensable key process in modern automobile manufacturing. The stamping die processes metal sheets into the required fuel tank shape through a series of technological steps, including shearing, punching, stretching, and trimming, etc. High-strength steel plates or aluminum alloys are usually used to meet the strength and corrosion resistance requirements. The shell is divided into two parts for stamping, and finally the two shells are welded to complete the production of the fuel tank shell. While requiring the stamped steel plate to fit tightly with the inside of the die, the die itself also needs to use wear-resistant materials such as high-speed steel or cemented carbide to ensure a long service life.

[0003] Nowadays, when stamping the fuel tank shell, it is necessary to manually place the steel plate on the die for stamping and manually take out the formed shell. The formed fuel tank shell fits with the surface of the die, and due to some irregular designs of the shell itself, it is difficult for workers to apply force to the fuel tank shell, resulting in a slow demolding speed and inconvenient removal of the formed shell. Therefore, a stamping die for an automobile fuel tank shell is proposed. Summary of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, the abstract of the specification, and the title of the utility model to avoid obscuring the purpose of this part, the abstract of the specification, and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] In view of the above problems existing in the existing stamping die for an automobile fuel tank shell, the present utility model is proposed.

[0006] Therefore, the purpose of the present utility model is to provide a stamping die for an automobile fuel tank shell, which is suitable for solving the problem that the formed fuel tank shell fits with the surface of the die, and due to some irregular designs of the shell itself, it is difficult for workers to apply force to the fuel tank shell, resulting in a slow demolding speed and inconvenient removal of the formed shell.

[0007] To solve the above technical problems, the present utility model provides the following technical solution: A stamping die for an automobile fuel tank shell, comprising:

[0008] A stamping unit, which includes a support table and an L-shaped plate fixedly connected to the side of the support table. A hydraulic telescopic rod is fixedly installed at the bottom of the L-shaped plate. The output end of the hydraulic telescopic rod is fixedly connected to a fixing plate, and an upper mold is fixed to the bottom of the fixing plate by bolts.

[0009] A forming unit, which includes a movable plate movably arranged on the top of the support table. A plurality of limiting rods are fixedly connected to the bottom of the movable plate. The bottom ends of the plurality of limiting rods all penetrate and extend to the bottom of the support table. A first spring is sleeved on the limiting rod. A threaded rod is threadedly connected to the bottom of the support table. The top end of the threaded rod is rotatably connected to a portal plate. The bottom end of the portal plate penetrates and extends to the bottom of the support table. A lower mold is fixed to the top of the portal plate by bolts. A through groove adapted to the lower mold is formed in the top of the movable plate. A demoulding assembly is arranged in the inner cavity of the lower mold.

[0010] As a preferred scheme of the stamping and forming die for an automobile fuel tank shell of the present utility model, wherein: the demoulding assembly includes two circular grooves formed in the top of the lower mold. Second springs are fixedly connected to the bottoms of the inner walls of the two circular grooves. Demoulding rods are fixedly connected to the tops of the two second springs.

[0011] As a preferred scheme of the stamping and forming die for an automobile fuel tank shell of the present utility model, wherein: the demoulding rod is composed of a round rod and a T-shaped rod. The T-shaped rod is threadedly connected to the top of the round rod. The bottom of the demoulding rod is slidably arranged inside the circular groove.

[0012] As a preferred scheme of the stamping and forming die for an automobile fuel tank shell of the present utility model, wherein: a cutting ring is fixedly sleeved on the side of the upper mold. An annular groove adapted to the cutting ring is formed in the top of the movable plate.

[0013] As a preferred scheme of the stamping and forming die for an automobile fuel tank shell of the present utility model, wherein: a portal strip is fixedly connected to the top of the movable plate. The two ends of the portal strip away from the L-shaped plate are distributed in a V-shaped design.

[0014] As a preferred scheme of the stamping and forming die for an automobile fuel tank shell of the present utility model, wherein: two movable rods are hinged to the side of the L-shaped plate. The tops of the two movable rods are rotatably connected to L-shaped rods.

[0015] The beneficial effects of the present utility model:

[0016] 1. By rotating the threaded rod, the height of the portal plate can be adjusted to facilitate the movable plate to adapt to lower dies of different heights. During the stamping process of the automotive fuel tank, the upper die presses the demoulding rod into the circular groove. After stamping is completed, the second spring pushes the demoulding rod upward to separate the formed shell from the lower die, thus facilitating workers to quickly and conveniently take out the shell.

[0017] 2. When the upper die descends to stamp the steel plate with the lower die, the cutting ring will contact the steel plate, and through the annular groove, the cutting ring cuts the steel plate so that the formed automotive fuel tank shell is separated from the redundant steel plate. As a result, the shell can be formed in one stamping, thus facilitating subsequent welding of two shells.

[0018] 3. The portal strip facilitates workers to quickly and accurately place the steel plate on the movable plate, thus ensuring the consistency of stamping forming. By rotating the movable rod and the L-shaped rod, the upper die can be supported to facilitate the installation and disassembly of the upper die. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for description in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings. Among them:

[0020] Figure 1 is a schematic diagram of the overall structure of the stamping and forming die for the automotive fuel tank shell proposed by the present invention;

[0021] Figure 2 is a schematic diagram of the positional relationship between the lower die and the portal plate proposed by the present invention;

[0022] Figure 3 is an exploded schematic diagram of the positional relationship between the demoulding assembly and the lower die proposed by the present invention;

[0023] Figure 4 is a schematic diagram of the connection relationship between the movable rod and the L-shaped rod proposed by the present invention.

[0024] Description of the Drawings: 100, stamping unit; 101, support table; 102, L-shaped plate; 103, hydraulic telescopic rod; 104, fixing plate; 105, upper die; 200, forming unit; 201, movable plate; 202, limiting rod; 203, first spring; 204, threaded rod; 205, portal plate; 206, lower die; 207, demoulding assembly; 2071, circular groove; 2072, second spring; 2073, demoulding rod; 208, cutting ring; 209, annular groove; 210, portal strip; 211, movable rod; 212, L-shaped rod. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Example

[0030] Reference Figures 1-4 , which is an embodiment of the utility model, provides a stamping die for an automobile fuel tank shell, including a stamping unit 100 and a molding unit 200.

[0031] The stamping unit 100 includes a support platform 101 and an L-shaped plate 102 fixedly connected to the side of the support platform 101. A hydraulic telescopic rod 103 is fixedly installed at the bottom of the L-shaped plate 102. The output end of the hydraulic telescopic rod 103 is fixedly connected to a fixed plate 104. An upper mold 105 is fixed to the bottom of the fixed plate 104 by bolts. The fixed plate 104 is used to install upper molds 105 of different specifications. Two movable rods 211 are hinged on the side of the L-shaped plate 102. The tops of the two movable rods 211 are rotatably connected to L-shaped rods 212. The upper mold 105 is driven by the hydraulic telescopic rod 103 to reciprocate up and down for stamping. The upper mold 105 can be supported by rotating the two movable rods 211 and the L-shaped rod 212 to facilitate installation and disassembly of the upper mold 105.

[0032] The forming unit 200 includes a movable plate 201 movably arranged on the top of the support table 101. A plurality of limiting rods 202 are fixedly connected to the bottom of the movable plate 201. The bottom ends of the plurality of limiting rods 202 all penetrate and extend to the bottom of the support table 101. A first spring 203 is sleeved on the limiting rod 202. The bottom of the support table 101 is threadedly connected with a threaded rod 204. The top end of the threaded rod 204 is rotatably connected with a gantry plate 205. The bottom end of the gantry plate 205 penetrates and extends to the bottom of the support table 101. A lower mold 206 is fixedly bolted to the top of the gantry plate 205. A through groove adapted to the lower mold 206 is formed in the top of the movable plate 201. A demolding assembly 207 is arranged in the inner cavity of the lower mold 206. A gantry strip 210 is fixedly connected to the top of the movable plate 201. The two ends of the gantry strip 210 away from the L-shaped plate 102 are designed to be V-shaped distributed. Rotating the threaded rod 204 can adjust the height of the gantry plate 205. The gantry plate 205 is composed of a rectangular plate and two straight rods. The straight rods penetrate and extend to the bottom of the movable plate 201, so as to facilitate the movable plate 201 to adapt to lower molds 206 of different heights, and enable the top of the movable plate 201 to be flush with the lower mold 206.

[0033] During use, place the steel plate on the movable plate 201. The gantry strip 210 facilitates the worker to quickly and accurately place the steel plate on the movable plate 201, thus ensuring the consistency of stamping forming. When the upper mold 105 descends, the upper mold 105 pushes the movable plate 201 to descend. Subsequently, the upper mold 105 wraps the lower mold 206 to stamp the steel plate to form an automobile fuel tank shell. When the upper mold 105 ascends, the first spring 203 pushes the movable plate 201 to ascend, so that the steel plate and the stamped shell are separated from the lower mold 206, facilitating the worker to take it out.

[0034] The demoulding assembly 207 includes two circular grooves 2071 formed in the top of the lower die 206. At the bottom of the inner walls of the two circular grooves 2071, second springs 2072 are fixedly connected. At the top of the two second springs 2072, demoulding rods 2073 are fixedly connected. The demoulding rod 2073 is composed of a round rod and a T-shaped rod. The T-shaped rod is threadedly connected to the top of the round rod. The bottom of the demoulding rod 2073 is slidably arranged inside the circular groove 2071. During the stamping process of the automobile fuel tank, the upper die 105 presses the demoulding rod 2073 into the circular groove 2071. When the stamping is completed, the movable plate 201 is affected by the weight of the steel plate and thus is lower than the height of the lower die 206. At this time, the second spring 2072 pushes the demoulding rod 2073 to rise so as to separate the formed shell from the top of the lower die 206 and lift it upward, making there be a gap between the stamped steel plate and the top of the movable plate 201, thus facilitating the worker to quickly and conveniently take out the shell. By rotating the T-shaped rod, the overall height of the demoulding rod 2073 can be adjusted so that it can adapt to different dies, so that the demoulding rod 2073 is flush with the top of the lower die 206 during the stamping process, thus not affecting the stamping effect.

[0035] In addition, a cutting ring 208 is fixedly sleeved on the side of the upper die 105. An annular groove 209 that fits the cutting ring 208 is formed in the top of the movable plate 201. When the upper die 105 descends to stamp the steel plate with the lower die 206, the cutting ring 208 will contact the steel plate, and through the annular groove 209, the cutting ring 208 cuts the steel plate so that the formed automobile fuel tank shell is separated from the redundant steel plate, thereby enabling the shell to be formed in one stamping, thus facilitating the subsequent welding of the two shells.

[0036] During use, the steel plate is placed on the movable plate 201 through the portal strip 210. Then, the hydraulic telescopic rod 103 is started to drive the fixed plate 104 to descend. By the descent of the upper die 105, the upper die 105 pushes the movable plate 201 to descend. Then, the upper die 105 wraps the lower die 206 to stamp the steel plate to form an automobile fuel tank shell. At this time, the demoulding rod 2073 is squeezed into the circular groove 2071, and the cutting ring 208 will contact the steel plate. Through the annular groove 209, the cutting ring 208 cuts the steel plate around the upper die 105. When the upper die 105 rises, the first spring 203 pushes the movable plate 201 to rise, separating the steel plate and the stamped shell from the lower die 206. At the same time, the second spring 2072 pushes the demoulding rod 2073 to rise so as to separate the formed shell from the top of the lower die 206 and lift it upward, making there be a gap between the stamped steel plate and the top of the movable plate 201, thus facilitating the worker to quickly and conveniently take out the shell and the cut steel plate in sequence.

[0037] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A stamping die for an automobile fuel tank shell, characterized in that, Including: A stamping unit (100), which includes a support table (101) and an L-shaped plate (102) fixedly connected to the side of the support table (101). A hydraulic telescopic rod (103) is fixedly installed at the bottom of the L-shaped plate (102). The output end of the hydraulic telescopic rod (103) is fixedly connected to a fixing plate (104). The upper die (105) is fixedly bolted to the bottom of the fixing plate (104). A forming unit (200), which includes a movable plate (201) movably arranged on the top of the support table (101). A plurality of limiting rods (202) are fixedly connected to the bottom of the movable plate (201). The bottom ends of the plurality of limiting rods (202) all penetrate and extend to the bottom of the support table (101). A first spring (203) is sleeved on the limiting rod (202). A threaded rod (204) is threadedly connected to the bottom of the support table (101). The top end of the threaded rod (204) is rotatably connected to a portal plate (205). The bottom end of the portal plate (205) penetrates and extends to the bottom of the support table (101). The lower die (206) is fixedly bolted to the top of the portal plate (205). A through groove adapted to the lower die (206) is formed in the top of the movable plate (201). A demoulding assembly (207) is arranged in the inner cavity of the lower die (206).

2. The stamping die for an automobile fuel tank housing according to claim 1, wherein: The demoulding assembly (207) includes two circular grooves (2071) formed in the top of the lower die (206). The bottom of the inner walls of the two circular grooves (2071) are both fixedly connected with a second spring (2072). The top of the two second springs (2072) are both fixedly connected with a demoulding rod (2073).

3. A stamping die for an automobile fuel tank housing according to claim 2, characterized in that: The demoulding rod (2073) is composed of a round rod and a T-shaped rod. The T-shaped rod is threadedly connected to the top of the round rod. The bottom of the demoulding rod (2073) is slidably arranged inside the circular groove (2071).

4. A stamping die for an automobile fuel tank housing according to claim 1, characterized in that: A cutting ring (208) is fixedly sleeved on the side of the upper die (105). An annular groove (209) adapted to the cutting ring (208) is formed in the top of the movable plate (201).

5. A stamping die for an automobile fuel tank housing according to claim 1, characterized in that: A portal strip (210) is fixedly connected to the top of the movable plate (201). The two ends of the portal strip (210) away from the L-shaped plate (102) are distributed in a V-shaped design.

6. A stamping mold for an automobile fuel tank housing according to claim 1, characterized in that: Two movable rods (211) are hinged to the side of the L-shaped plate (102). The tops of the two movable rods (211) are both rotatably connected to an L-shaped rod (212).

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