Simple molding mold for expansion tank cover

Abstract

A simplified molding die for an expansion tank cover includes a lower mold assembly comprising a lower support and a lower core. The lower support has a square groove in its center, and two mold cores are symmetrically arranged on both sides of the square groove. The lower core is disposed within a cavity formed between the two mold cores and the square groove. The upper mold assembly includes an upper support and an upper core. The upper support has a boss in its center, and the upper core is mounted on the boss and corresponds to the lower core. Two arc-shaped grooves are provided on both sides of the upper core, corresponding to the two mold cores respectively. One end of each side mold core has a cutting block A, with a hook-shaped cutting edge A on its inner side. One end of the upper core has an upper cutting body A corresponding to the hook-shaped cutting edge A. Two cutting blocks B are symmetrically arranged on both sides of the lower core end, with hook-shaped cutting edges B on their inner sides. The other end of the upper core has an upper cutting body B corresponding to the hook-shaped cutting edge A. This simplified molding die can efficiently produce expansion tank covers, overcoming the shortcomings of plastic covers.

Description

Technical Field

[0001] This utility model relates to the field of automotive molds, and in particular to a simple molding mold for an expansion tank cover. Background Technology

[0002] The cover plate of an automotive expansion tank is a protective and decorative structural component covering the exterior of the expansion tank. Its core functions are primarily physical protection: it isolates the expansion tank and its connecting pipes from radiant heat from high-temperature components in the engine compartment (such as the exhaust pipe and turbocharger), preventing accelerated aging due to prolonged high temperatures. It also blocks dust, oil, and coolant splashes from contaminating the tank surface and prevents damage or loosening of pipes caused by external objects. Secondly, it provides organization and noise reduction: it houses the expansion tank and surrounding water pipes, sensors, and other components in a relatively enclosed space, optimizing the engine compartment layout, reducing friction noise from airflow and components during vehicle operation, and improving cabin quietness. For details, see the installation structure of an automotive expansion tank disclosed in utility model patent application number CN2011201127995. Currently, automotive expansion tank covers are typically made of engineering plastics through injection molding, offering lightweight characteristics. However, plastic covers have poor resistance to high and low temperatures and impact resistance. Therefore, it is necessary to design them as thin metal covers and develop corresponding molding dies. Utility Model Content

[0003] To address the aforementioned problems, this utility model proposes a simple molding mold for expansion tank cover plates.

[0004] The technical solution of this utility model is: a simple molding mold for an expansion tank cover, including a lower mold assembly and an upper mold assembly; the upper mold assembly is fixed on the bottom surface of an upper support base, and the lower mold assembly is fixed on the upper surface of the lower support base. The lower mold assembly includes a lower support and a lower core. A square groove is provided in the middle of the lower support, and two mold cores are symmetrically provided on both sides of the middle of the square groove. The lower core is disposed in the cavity formed between the two mold cores and the square groove. The upper mold assembly includes an upper support and an upper core. A boss is provided in the middle of the upper support, and the upper core is mounted on the boss and corresponds to the lower core. Two arc-shaped grooves are provided on both sides of the upper core, and the two arc-shaped grooves correspond to the two mold cores respectively.

[0005] Preferably, one end of the side mold core is provided with a cutting block A, which is a square alloy block. The inner side of the lower cutting block A is provided with a hook-shaped cutting edge A. One end of the upper core is provided with an upper cutting body A corresponding to the hook-shaped cutting edge A. The upper cutting body is a square alloy block. Two cutting blocks B are symmetrically provided on both sides of the lower core end. The cutting blocks B are square alloy blocks. The inner side of the cutting block B is provided with a hook-shaped cutting edge B. The upper cutting body is a square alloy block. The other end of the upper core is provided with an upper cutting body B corresponding to the hook-shaped cutting edge A.

[0006] Preferably, the lower core is provided with sliders on both the end face and the side face. The sliders are fixed to the lower core by screws. The sliders can be disassembled and replaced after severe wear. The sliders contact the side wall of the square groove to form a sliding pair. A gas spring is vertically fixed in the square groove and supported on the ground of the upper core.

[0007] Preferably, punches are provided on both sides of the end of the upper core. The punches are cylindrical and have rounded corners at the ends. A telescopic sliding hole is provided in the middle of the upper core. A sliding sleeve is provided in the telescopic sliding hole, and a material ejector rod is provided in the sliding sleeve inside the telescopic sliding hole.

[0008] Preferably, a centering guide assembly is provided between both sides of the upper support and the lower support, and the two centering guide assemblies are arranged alternately.

[0009] Preferably, the centering guide assembly includes a fixed seat, a sliding sleeve seat, and a guide post. The fixed seat is connected to the lower support by screws, the lower end of the guide post is fixedly fitted inside the fixed seat, the sliding sleeve seat is connected to the upper support by screws, and the upper end of the guide post is slidably fitted into the sliding sleeve seat.

[0010] Preferably, a storage support assembly is provided between the upper support and the lower support, including an upper column connected to the upper support, a lower column connected to the lower support, and a pad. Both the upper and lower columns are cylindrical, and the pad is disposed between the lower and upper columns. The diameter of the pad is the same as the diameter of the upper and lower columns, and the pad is connected to the middle of the lower column by a chain.

[0011] Preferably, the end face of the lower support column is coaxially provided with a positioning blind hole, and the ground of the pad block is provided with a cylindrical positioning rod that can be fitted into the positioning blind hole.

[0012] The beneficial technical effects of this utility model are as follows: This simple forming mold supports the sheet metal by setting a lower core and a side mold core on the lower support, and stamps the metal sheet metal by setting an upper core with arc grooves on both sides on the upper support. The cover plate is formed under the combined stamping action of the upper core and the lower core. Cutting blocks and conductors facing each other are set on the mold core. During the stamping process, a notch can be cut on the cover plate. Therefore, it can efficiently produce expansion tank cover plates and make up for the shortcomings of plastic cover plates. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a three-dimensional structural diagram of the lower mold assembly; Figure 3 This is a schematic diagram of the three-dimensional structure of the lower core. Figure 4 This is a three-dimensional structural diagram of the lower support; Figure 5This is a three-dimensional structural diagram of the upper mold component.

[0014] In the diagram, 1. Upper mold assembly, 11. Upper support, 111. Boss, 12. Upper core, 121. Arc groove, 13. Upper cutter body A, 14. Upper cutter body B, 15. Punch, 16. Telescopic sliding hole, 2. Lower mold assembly, 21. Lower support, 211. Square groove, 22. Lower core, 23. Side mold core, 24. Cutting block A, 241. Hook-shaped cutting edge A, 25. Cutting block B, 251. Hook-shaped cutting edge B, 26. Slider, 27. Gas spring, 3. Centering guide assembly, 31. Fixed seat, 32. Sliding sleeve seat, 33. Guide post, 4. Storage support assembly, 41. Upper support column, 42. Lower support column, 421. Positioning blind hole, 43. Pad, 431. Positioning rod. Detailed Implementation

[0015] Example 1, see appendix Figure 1-5 A simplified molding mold for an expansion tank cover includes a lower mold assembly 2 and an upper mold assembly 1. The lower mold assembly 2 includes a lower support 21 and a lower core 22. The lower support 21 has a square groove 211 in the middle, and two mold cores 23 are symmetrically arranged on both sides of the square groove 211. The lower core 22 is disposed in the cavity formed between the two mold cores 23 and the square groove 211. The side mold cores 23 are fixedly assembled, while the lower core 22 is assembled in a circular motion. When the mold is closed, the two can interlock to form a stepped structure on the surface of the cover, thereby improving its resistance to deformation. The upper mold assembly 1 includes an upper support 11 and an upper core 12. The upper support 11 has a boss 111 in the middle, and the upper core 12 is mounted on the boss 111 and corresponds to the lower core 22. The upper core 12 has two arc-shaped grooves 121 on both sides, which correspond to the two mold cores respectively. When the mold is closed, the two arc-shaped grooves 121 can fit into the two mold cores 23.

[0016] One end of the side mold core 23 is provided with a cutting block A 24, and the inner side of the lower cutting block A 24 is provided with a hook-shaped cutting edge A 241. One end of the upper core 12 is provided with an upper cutting body A 13 corresponding to the hook-shaped cutting edge A 241. At the moment of mold closing, the upper cutting body A 13 matches and enters the hook-shaped cutting edge A 241, cutting a notch at the edge of the cover plate. Two cutting blocks B 25 are symmetrically provided on both sides of the end of the lower core 22. The inner side of the cutting block B 25 is provided with a hook-shaped cutting edge B 251. The other end of the upper core 12 is provided with an upper cutting body B 14 corresponding to the hook-shaped cutting edge A 251. At the moment of mold closing, the upper cutting body B 14 matches and enters the hook-shaped cutting edge B 251, cutting a notch at the edge of the other end of the cover plate, forming four assembly docking notches at both ends of the cover plate.

[0017] The lower core 22 is provided with sliders 26 on both the end face and the side face. The sliders 26 contact the side wall of the square groove 211 to form a sliding pair. A gas spring 27 is vertically fixed in the square groove 211. The gas spring 27 is supported on the ground of the upper core 12. When the mold is closed and stamped, the pressure of the upper core 12 will drive the lower core 22 to slide downward to compress the gas spring 27, which provides a buffer for the stamping of the cover plate and avoids the instantaneous impact force of the stamping being too large and damaging the cover plate.

[0018] Punches 15 are provided on both sides of the end of the upper core 12. The punches are used to form through holes on the surface of the cover plate to improve the heat dissipation effect of the cover plate. A telescopic sliding hole 16 is provided in the middle of the upper core 12. A ejector pin is provided in the telescopic sliding hole 16. After the die is closed and stamped, the ejector pin extends out from the telescopic sliding hole and pushes against the surface of the cover plate to prevent the upper core from being pulled up when the die is removed.

[0019] This simple forming mold supports the sheet metal by setting a lower core 22 and a side mold core 23 on the lower support 21, and stamps the metal sheet metal by setting an upper core 12 with arc grooves 121 on both sides on the upper support 11. The cover plate is formed under the combined stamping action of the upper core 12 and the lower core 22. The mold core is equipped with upper and lower facing cutting blocks and conductors. During the stamping process, the mating notch can be cut on the cover plate, so it can efficiently produce expansion tank cover plates and make up for the shortcomings of plastic cover plates.

[0020] Example 2, see appendix Figure 1 , 4 -5. This embodiment is basically the same as embodiment one, and the similarities will not be repeated. The difference is that: centering guide components 3 are provided between the two sides of the upper support 11 and the lower support 21. The two centering guide components 3 are arranged in an alternating manner. The alternating arrangement makes the upper mold assembly and the lower mold assembly 2 in a relatively balanced state when the mold is closed. The centering guide component 3 includes a fixed seat 31, a sliding sleeve seat 32 and a guide post 33. The fixed seat 31 is connected to the lower support 21. The lower end of the guide post is fixedly fitted in the fixed seat. The sliding sleeve seat 32 is connected to the upper support 11. The upper end of the guide post 33 is slidably fitted into the sliding sleeve seat 32.

[0021] When the upper mold assembly 1 and the lower mold assembly are closed and stamped, the sliding sleeve seat 32 moves downward with the upper support 11. When the upper core 12 is about to contact the metal plate on the lower core 22, the guide post 33 slides into the sliding sleeve seat 32. The coaxial sliding of the guide post in the sliding sleeve seat improves the guidance for mold closing, avoids misalignment of the upper core 12 and the lower core 22 under the stamping pressure, ensures the accuracy of mold closing, and improves the processing quality of the expansion tank cover plate.

[0022] Example 3, see appendix Figure 1 , 4-5. This embodiment is basically the same as Embodiment 1, and the similarities will not be repeated. The difference is that a storage support assembly 4 is provided between the upper support 11 and the lower support 21, including an upper support column 41 connected to the upper support 11, a lower support column 42 connected to the lower support 21, and a pad 43. The upper support column and the lower support column are the same size and are arranged coaxially. The pad 43 can be set between the lower support column 42 and the upper support column 41. The pad 43 is a short cylinder. The pad is connected to the middle of the lower support column by a chain to prevent the pad from being lost.

[0023] The end face of the lower support column 42 is provided with a positioning blind hole 421, and the ground of the pad block 43 is provided with a positioning rod 431 that can be inserted into the positioning blind hole 421. When the pad block 43 is placed between the upper support column 41 and the lower support column 42, it is fixed by inserting the positioning rod 431 into the blind hole to ensure the load-bearing effect between the supports and avoid misalignment and slippage.

[0024] When the die stamping operation is performed, the pad 43 is removed from between the upper support 41 and the lower support 42, and a certain gap is formed between the upper support 41 and the lower support 42. After the upper die assembly 1 and the lower die assembly 2 are closed, there will be no contact between the two affecting the die stamping. When the die stamping operation is completed and needs to be stored or transported, the pad 43 is placed between the upper support 41 and the lower support 42 to support the upper die assembly 1, so that a certain gap is formed between the upper core 12 and the lower core 22 to avoid contact between the two and cause wear.

Claims

1. A simple molding die for an expansion tank cover, characterized in that: It includes a lower mold assembly and an upper mold assembly; the lower mold assembly includes a lower support and a lower core, the lower support has a square groove in the middle, and two mold cores are symmetrically arranged on both sides of the square groove, and the lower core is set in the cavity formed between the two mold cores and the square groove; the upper mold assembly includes an upper support and an upper core, the upper support has a boss in the middle, the upper core is installed on the boss and corresponds to the lower core, and two arc-shaped grooves are provided on both sides of the upper core, which correspond to the two mold cores respectively.

2. The simplified molding die for an expansion tank cover plate according to claim 1, characterized in that: One end of the side mold core is provided with a cutting block A, the inner side of the lower cutting block A is provided with a hook-shaped cutting edge A, one end of the upper core is provided with an upper cutting body A corresponding to the hook-shaped cutting edge A, two cutting blocks B are symmetrically provided on both sides of the lower core end, the inner side of the cutting block B is provided with a hook-shaped cutting edge B, and the other end of the upper core is provided with an upper cutting body B corresponding to the hook-shaped cutting edge A.

3. The simplified molding die for an expansion tank cover plate according to claim 2, characterized in that: The lower core is provided with sliders on its end face and side face. The sliders contact the side wall of the square groove to form a sliding pair. A gas spring is vertically fixed in the square groove and supported on the ground of the upper core.

4. The simplified molding die for an expansion tank cover plate according to claim 1, characterized in that: Punches are provided on both sides of the end of the upper core, and a telescopic sliding hole is provided in the middle of the upper core, with a material ejection rod provided inside the telescopic sliding hole.

5. The simplified molding die for an expansion tank cover plate according to claim 1, characterized in that: A centering guide assembly is provided between both sides of the upper and lower supports, and the two centering guide assemblies are arranged alternately.

6. The simplified molding die for an expansion tank cover plate according to claim 5, characterized in that: The centering guide assembly includes a fixed seat, a sliding sleeve seat, and a guide post. The fixed seat is connected to the lower support, the lower end of the guide post is fixedly fitted inside the fixed seat, the sliding sleeve seat is connected to the upper support, and the upper end of the guide post is slidably fitted into the sliding sleeve seat.

7. The simplified molding die for an expansion tank cover plate according to claim 1, characterized in that: A storage support assembly is provided between the upper support and the lower support, including an upper column connected to the upper support, a lower column connected to the lower support, and a pad block. The pad block is disposed between the lower column and the upper column, and the pad block is connected to the middle of the lower column via a chain.

8. A simplified forming mold for an expansion tank cover plate according to claim 7, characterized in that: The end face of the lower support column is provided with a positioning blind hole, and the ground of the pad block is provided with a positioning rod that can be fitted into the positioning blind hole.

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