A filler neck inner plate shaping die

Abstract

The utility model discloses a kind of fuel filler neck inner plate shaping mould, specifically related to mould technical field, including upper mould, lower mould and hydraulic linkage assembly, the upper mould is located in lower mould top, the lower mould has lower mould seat and lower mould core, the lower mould core is installed in lower mould seat, the lower mould core is processed with the convex that is in accord with the shape of fuel filler neck inner cavity on, the convex edge is provided with the upper pressure ring plate for extruding fuel filler neck edge, the upper pressure ring plate is driven to move up by the hydraulic linkage assembly of installation on lower mould to extrude fuel filler neck edge upwards.The utility model is driven to extrude fuel filler neck edge upwards by setting the hydraulic linkage assembly that is in accord with upper mould action linkage, reach the purpose that shaping can be carried out without the aid of external equipment, break through the limitation existing in existing shaping mould.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and more specifically to a shaping mold for the inner plate of a fuel filler box. Background Technology

[0002] In the forming process of automotive fuel filler caps, a forming die is used. A forming die is a type of stamping die, usually located in the latter half or final process of the stamping production line. It is not used to change the general shape of the workpiece, but to fine-tune and finish the stamped parts that have already undergone blanking, drawing, bending and other processes, in order to eliminate minor errors caused by previous processes and obtain parts with extremely high precision and standard shape.

[0003] Because the fuel filler cap needs to be used in conjunction with the fuel tank cap, the flatness of its edges is extremely important during the molding process to ensure a proper seal between the fuel tank cap and the fuel filler cap, thus preventing leakage or water ingress. Currently, existing forming dies often utilize an additional hydraulic system to drive a clamping block during the finishing process of the fuel filler cap edges, holding the edges between the clamping block and the upper die to achieve flatness. However, this method requires an additional hydraulic drive system and cannot be used independently; therefore, existing forming dies have certain limitations in their application. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a shaping mold for the inner plate of the fuel filler box. By setting a hydraulic linkage component that is linked to the action of the upper mold, the upper pressure ring plate is used to drive the upper pressure ring plate to press the edge of the fuel filler box upward, so as to achieve the purpose of shaping without the aid of external equipment, thus breaking through the limitations of the existing shaping mold.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a shaping mold for the inner panel of a fuel filler box, comprising an upper mold, a lower mold, and a hydraulic linkage assembly. The upper mold is located on top of the lower mold. The lower mold has a lower mold base and a lower mold core. The lower mold core is installed inside the lower mold base. The lower mold core is machined with protrusions that conform to the shape of the inner cavity of the fuel filler box. The protrusions have upper pressure ring plates on their edges for pressing the edges of the fuel filler box. The upper pressure ring plates are driven upward by the hydraulic linkage assembly installed on the lower mold to press the edges of the fuel filler box upward.

[0006] In a preferred embodiment, the shape of the upper pressure ring plate is consistent with the shape of the edge of the filler neck box.

[0007] In a preferred embodiment, the hydraulic linkage assembly includes a hydraulic cylinder mounted on the lower mold base, a first piston rod, and a second piston rod and piston cylinder mounted on the bottom of the upper pressure ring plate. The top end of the second piston rod is fixed to the bottom of the upper pressure ring plate, and the piston cylinder is sleeved on the bottom end of the second piston rod. The hydraulic cylinder is fixed on the lower mold base, and the bottom end of the first piston rod is sleeved inside the hydraulic cylinder. The bottom end of the piston cylinder is connected to a buffer box through a vertical pipe, and the buffer box and the hydraulic cylinder are connected through a first pipe and a second pipe.

[0008] In a preferred embodiment, there are two hydraulic cylinders arranged on one side of the lower mold core, which are connected by a first pipeline, and the first pipeline is connected to the buffer box by a second pipeline.

[0009] In a preferred embodiment, a second sleeve is fixed at the bottom end of the upper mold relative to the top end of the first piston rod. The second sleeve is adapted to the first piston rod and is used to follow the downward movement of the upper mold to push the first piston rod downward synchronously, thereby compressing the hydraulic oil in the hydraulic cylinder.

[0010] In a preferred embodiment, a plurality of limiting rod groups are provided between the upper mold and the lower mold, and the plurality of limiting rod groups are respectively installed at the four corner positions between the upper mold and the lower mold.

[0011] In a preferred embodiment, the limiting rod assembly has a limiting post fixed on the lower mold and a first sleeve fixed on the upper mold. The first sleeve has a limiting hole adapted to the limiting post inside. The limiting hole passes through the upper mold. A first spring is sleeved on the outer end of the limiting post. The first spring is connected to the bottom end face of the first sleeve sleeved on the outer end of the limiting post.

[0012] In a preferred embodiment, the upper mold has an upper mold base and an upper mold core. The upper mold core is installed inside the upper mold base and has a cavity machined inside the upper mold core that is adapted to the shape of the filler cap box, which can be used to place the filler cap box.

[0013] The technical effects and advantages of this utility model are as follows:

[0014] By utilizing the downward movement of the upper mold to squeeze the hydraulic oil in the hydraulic cylinder into the buffer box and piston cylinder in sequence, and then using the increased hydraulic pressure in the piston cylinder to push the second piston rod to drive the upper pressure ring plate to move upward, the edge of the car filler box can be clamped between the upper pressure ring plate and the upper mold, so that the edge of the filler box remains flat and the shaping purpose is achieved. Moreover, this shaping process is linked with the downward movement of the upper mold and can be completed without the need for additional hydraulic equipment, thus breaking the limitations of traditional shaping molds. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the upper and lower molds of this utility model;

[0017] Figure 3 for Figure 2 A bottom view;

[0018] Figure 4 This is a cross-sectional view of the present invention;

[0019] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0020] Figure 6 This is a schematic diagram of the structure of the upper pressure ring, buffer box, first pipeline, second pipeline and hydraulic cylinder of this utility model.

[0021] The attached figures are labeled as follows:

[0022] 1. Upper mold; 11. Upper mold base; 12. Upper mold core; 2. Lower mold; 21. Lower mold base; 22. Lower mold core; 3. Limiting rod assembly; 31. Limiting post; 32. First sleeve; 33. First spring; 4. Upper pressure ring plate; 5. Second sleeve; 6. Hydraulic linkage assembly; 61. Hydraulic cylinder; 62. First piston rod; 63. First pipeline; 64. Second pipeline; 65. Buffer box; 66. Vertical pipe; 67. Piston cylinder; 68. Second piston rod; 69. Second spring. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Refer to the instruction manual appendix Figures 1-6 This utility model provides a shaping mold for the inner panel of a fuel filler box, including an upper mold 1, a lower mold 2, and a hydraulic linkage assembly 6. The upper mold 1 is located on top of the lower mold 2. The lower mold 2 has a lower mold base 21 and a lower mold core 22. The lower mold core 22 is installed in the lower mold base 21. The lower mold core 22 has protrusions that match the shape of the inner cavity of the fuel filler box. The upper mold 1 has an upper mold base 11 and an upper mold core 12. The upper mold core 12 is installed in the upper mold base 11. The upper mold core 12 has a cavity that matches the shape of the fuel filler box. The upper mold core 12 and the lower mold core 22 are adapted to each other. The fuel filler box to be shaped is located between the upper mold core 12 and the lower mold core 22.

[0025] To ensure that the upper mold 1 does not deviate in the direction of vertical movement, multiple limiting rod groups 3 are provided between the upper mold 1 and the lower mold 2. These limiting rod groups 3 are respectively installed at the four corners between the upper mold 1 and the lower mold 2. Specifically, for example... Figure 3 As shown, the limiting rod assembly 3 has a limiting post 31 fixed on the lower mold 2 and a first sleeve 32 fixed on the upper mold base 11. The first sleeve 32 has a limiting hole adapted to the limiting post 31 inside. The limiting hole passes through the upper mold base 11. A first spring 33 is sleeved on the outer end of the limiting post 31. When the upper mold 1 moves downward, it will drive the first sleeve 32 to move downward synchronously and sleeve the outer end of the limiting post 31. Under the restriction of the limiting post 31, the movement direction of the upper mold 1 can be guaranteed to be straight up and down and will not deviate. At the same time, during the downward movement of the first sleeve 32, it will also contact and compress the first spring 33 sleeved on the outer end of the limiting post 31. In this way, the elasticity of the first spring 33 itself can be used to buffer the downward movement of the upper mold 1.

[0026] An upper pressure ring plate 4 for pressing the edge of the filler box is provided on the edge of the protrusion of the lower mold core 22. When not in use, the upper pressure ring plate 4 is embedded in the lower mold core 22. The shape of the upper pressure ring plate 4 is consistent with the shape of the edge of the filler box. The upper pressure ring plate 4 is pushed upward by the hydraulic linkage assembly 6. In this embodiment, the hydraulic linkage assembly 6 specifically includes a hydraulic cylinder 61 installed on the lower mold base 21, a first piston rod 62, and a second piston rod 68 and a piston cylinder 67 installed at the bottom of the upper pressure ring plate 4. The top end of the second piston rod 68 is fixed to the bottom of the upper pressure ring plate 4. The piston cylinder 67 is fitted onto the bottom end of the second piston rod 68. The hydraulic cylinder 61 is fixed on the lower mold base 21, and the bottom end of the first piston rod 62 is fitted into the hydraulic cylinder 61. The bottom end of the piston cylinder 67 is connected to a buffer box 65 through a vertical pipe 66. The buffer box 65 and the hydraulic cylinder 61 are connected through a first pipe 63 and a second pipe 64. There are two hydraulic cylinders 61 arranged on one side of the lower mold core 22. The two hydraulic cylinders 61 are connected through a first pipe 63, and the first pipe 63 is connected to the buffer box 65 through a second pipe 64.

[0027] During the downward movement of the upper mold 1, the second sleeve 5 installed on the upper mold base 11 pushes the first piston rod 62 downward. The first piston rod 62 compresses the hydraulic oil at the bottom of the hydraulic cylinder 61 and enters the buffer box 65 through the first pipe 63 and the second pipe 64. As the upper mold 1 continues to move downward and the first piston rod 62 continues to compress, the hydraulic oil in the buffer box 65 is forced into the piston cylinder 67, and the second piston rod 68 is pushed upward to push the upper pressure ring plate 4. This clamps the edge of the car fuel filler box between the upper pressure ring plate 4 and the upper mold core 12 of the upper mold 1, so that the top and bottom edges of the car fuel filler box are compressed to keep it flat and achieve the purpose of shaping.

[0028] Moreover, the outer end of the first piston rod 62 is fitted with a second spring 69, which can drive the first piston rod 62 to move upward and reset after the upper mold 1 moves upward, and at the same time can draw the hydraulic oil in the piston cylinder 67 back into the hydraulic cylinder 61.

[0029] This invention can perform fine processing on the edge of the car fuel filler box through the above operation, and the above shaping operation is carried out synchronously with the downward movement of the upper mold 1. It does not require an additional hydraulic drive system, so it can be used independently of the hydraulic drive system, thus solving the problem of the limitations of existing shaping molds.

[0030] Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A shaping mold for the inner panel of a fuel filler cap box, characterized in that: The device includes an upper mold (1), a lower mold (2), and a hydraulic linkage assembly (6). The upper mold (1) is located on top of the lower mold (2). The lower mold (2) has a lower mold base (21) and a lower mold core (22). The lower mold core (22) is installed inside the lower mold base (21). The lower mold core (22) has protrusions that match the shape of the inner cavity of the filler box. The protrusions have upper pressure ring plates (4) for pressing the edge of the filler box. The upper pressure ring plates (4) are driven to move upward by the hydraulic linkage assembly (6) installed on the lower mold (2) to press the edge of the filler box upward.

2. The forming mold for the inner plate of the fuel filler box according to claim 1, characterized in that: The shape of the upper pressure ring plate (4) is consistent with the shape of the edge of the oil filler box.

3. The forming mold for the inner plate of the fuel filler box according to claim 1, characterized in that: The hydraulic linkage assembly (6) has a hydraulic cylinder (61) installed on the lower mold base (21), a first piston rod (62), and a second piston rod (68) and a piston cylinder (67) installed on the bottom of the upper pressure ring plate (4). The top end of the second piston rod (68) is fixed to the bottom of the upper pressure ring plate (4). The piston cylinder (67) is sleeved on the bottom end of the second piston rod (68). The hydraulic cylinder (61) is fixed on the lower mold base (21) and the bottom end of the first piston rod (62) is sleeved inside the hydraulic cylinder (61). The bottom end of the piston cylinder (67) is connected to a buffer box (65) through a vertical pipe (66). The buffer box (65) and the hydraulic cylinder (61) are connected through a first pipe (63) and a second pipe (64).

4. The forming mold for the inner plate of the fuel filler box according to claim 3, characterized in that: There are two hydraulic cylinders (61) arranged on one side of the lower mold core (22). The two hydraulic cylinders (61) are connected by a first pipeline (63), and the first pipeline (63) is connected to the buffer box (65) by a second pipeline (64).

5. The forming mold for the inner plate of the fuel filler box according to claim 3, characterized in that: The bottom end of the upper mold (1) is fixed with a second sleeve (5) at the position of the top end of the first piston rod (62). The second sleeve (5) is adapted to the first piston rod (62) and is used to follow the upper mold (1) to move down and push the first piston rod (62) to move down synchronously, thereby compressing the hydraulic oil in the hydraulic cylinder (61).

6. The forming mold for the inner plate of the fuel filler box according to claim 1, characterized in that: Multiple limiting rod groups (3) are provided between the upper mold (1) and the lower mold (2), and the multiple limiting rod groups (3) are respectively installed at the four corner positions between the upper mold (1) and the lower mold (2).

7. The forming mold for the inner plate of the fuel filler box according to claim 6, characterized in that: The limiting rod assembly (3) has a limiting post (31) fixed on the lower mold (2) and a first sleeve (32) fixed on the upper mold (1). The first sleeve (32) has a limiting hole inside that matches the limiting post (31). The limiting hole passes through the upper mold (1). A first spring (33) is sleeved on the outer end of the limiting post (31). The first spring (33) and the bottom end face of the first sleeve (32) sleeved on the outer end of the limiting post (31) are connected.

8. The forming mold for the inner plate of the fuel filler box according to claim 1, characterized in that: The upper mold (1) has an upper mold base (11) and an upper mold core (12). The upper mold core (12) is installed in the upper mold base (11), and the upper mold core (12) has a cavity that is adapted to the shape of the oil filler box.

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