Automobile fuel tank gasket die gap adjusting equipment

Abstract

The utility model relates to the technical field of dies, in particular to automobile fuel tank gasket die gap adjusting equipment which comprises an upper base plate and a lower base plate arranged at the bottom of the upper base plate, an upper die core is arranged in the upper base plate, a lower die core is arranged in the lower base plate, and a middle plate is arranged between the upper die core and the lower die core. A gap adjusting assembly used for preventing poor adhesion of products is arranged between the upper base plate and the lower base plate and comprises spring seats arranged in the upper base plate and the lower base plate. By arranging the gap adjusting assembly, when the upper base plate and the upper mold core are pushed by pressure to descend to be close to the lower mold core to extrude rubber in the mold closing process on the vulcanizing machine, the second spring overcomes the pressure brought by the descending mold closing of the upper mold core and the first spring, so that a space gap is formed between the lower mold core and the middle plate; rubber can uniformly flow out to the periphery of the stock bin conveniently through the space gap, and poor adhesion caused by accumulation of the rubber in the gap between the middle plate and the lower mold core is avoided.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a gap adjustment device for automotive fuel tank gasket molds. Background Technology

[0002] A mold is a tool used to create shaped objects. This tool consists of various parts, with different molds composed of different parts. It primarily achieves the shaping of objects by changing the physical state of the material being molded. Under external force, a mold can transform a blank into a part with a specific shape and size. Molds are used in the production of automotive fuel tank gaskets. Most existing traditional automotive fuel tank gasket molds consist of an upper base plate, an upper mold core, a middle plate, a lower mold core, and a lower base plate. The mold is installed on a specialized vulcanizing machine. The mold opens, rubber is placed into the mold, the upper mold core descends, and the mold closes for vulcanization. The production process is as follows: upper mold opening → middle plate rising → product removal → middle plate descending → rubber input → upper mold closing for vulcanization.

[0003] However, during the production process, after the middle plate descends, it fits with the lower mold core, and the upper mold core presses down on the middle plate. But as the mold is used for a long time, there will be local gaps between the middle plate and the lower mold core, causing local rubber to overflow. The rubber overflowing from the hopper is prone to accumulate in the gaps, and excessive accumulation will stick to the product formed in the hopper. As long as fluororubber sticks to the product, it will cause poor adhesion.

[0004] To address this issue, a gap adjustment device for automotive fuel tank gasket molds is proposed. Summary of the Invention

[0005] The purpose of this utility model is to provide a gap adjustment device for automotive fuel tank gasket molds, in order to solve the problem mentioned in the background art. However, during the production process, after the middle plate descends, the middle plate fits with the lower mold, and the upper mold presses down on the middle plate. But with the long-term use of the mold, there will be local gaps between the middle plate and the lower mold, causing local rubber to overflow. The overflowing rubber in the hopper is prone to accumulate at the gaps, and excessive accumulation will adhere to the molded product in the hopper. As long as fluororubber adheres to the product, it will cause poor adhesion.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a gap adjustment device for automotive fuel tank gasket molds, comprising an upper base plate and a lower base plate disposed at the bottom of the upper base plate, wherein an upper mold core is disposed in the upper base plate, a lower mold core is disposed in the lower base plate, and a middle plate is disposed between the upper mold core and the lower mold core; a gap adjustment component for preventing poor adhesion of the product is disposed between the upper base plate and the lower base plate, the gap adjustment component comprising spring seats in the upper base plate and the lower base plate, wherein a first spring is engaged with the spring seat in the upper base plate, a second spring is engaged with the spring seat in the lower base plate, and a guide rod is movably inserted through the middle plate.

[0007] Preferably, the lower mold core is provided with a plurality of material bins for rubber molding.

[0008] Preferably, both the upper and lower mold cores are provided with threaded holes, and a screw is threaded into the threaded holes. Both the upper and lower substrates are provided with slots, and the screw is located between the slots and the threaded holes.

[0009] Preferably, both the upper substrate and the lower substrate are provided with connecting holes, and the guide rod is located between the connecting holes. The part of the guide rod located in the connecting hole of the upper substrate is provided with threads, and a nut is connected to the thread.

[0010] Preferably, the upper base plate is provided with a connecting rod, and a connecting block for limiting and fixing the spring seat is fixedly connected to the connecting rod.

[0011] Preferably, both the upper and lower substrates are provided with receiving grooves, and the spring seat is provided with a slot adapted to the connecting block, with the connecting block located in the slot.

[0012] Preferably, a third spring is fixedly connected to the connecting block, and a rotating block is fixedly connected to the connecting rod, with an anti-slip rubber pad provided on the rotating block.

[0013] The beneficial effects of this utility model are:

[0014] This invention, by incorporating a gap adjustment component, allows for a spatial gap between the lower mold core and the middle plate during the mold closing process on a vulcanizing machine. This gap enables the upper plate and upper mold core to descend and approach the lower mold core to compress the rubber. The second spring overcomes the pressure from the descending upper mold core and the first spring, creating a space between the lower mold core and the middle plate. This space facilitates the even flow of rubber around the hopper, preventing rubber from accumulating in the gap between the middle plate and the lower mold core.

[0015] Poor adhesion due to accumulation: Under continuous pressure, the middle plate first adheres to the lower mold core, and there will be a certain gap between the upper mold core and the middle plate to facilitate reflow, thereby avoiding unsaturated space in the product molding process and causing defects. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 is a schematic diagram of the overall structure of an automotive fuel tank gasket mold gap adjustment device according to an embodiment of the present invention;

[0018] Figure 2 is a schematic diagram of the guide rod structure of an automotive fuel tank gasket mold gap adjustment device according to an embodiment of the present invention;

[0019] Figure 3 is a schematic cross-sectional view of the upper base plate of an automotive fuel tank gasket mold gap adjustment device according to an embodiment of the present invention.

[0020] Figure 4 Figure 1 shows an enlarged structural schematic diagram of point A in a device for adjusting the gap of an automotive fuel tank gasket mold, which is an embodiment of this utility model.

[0021] The components in the diagram are labeled as follows: 1. Upper base plate; 2. Lower base plate; 3. Upper mold core; 4. Lower mold core; 5. Middle plate; 6. Spring seat; 7. First spring; 8. Second spring; 9. Guide rod; 10. Material bin; 11. Screw; 12. Slot; 13. Connecting hole; 14. Nut; 15. Connecting rod; 16. Connecting block; 17. Receiving groove; 18. Slot; 19. Third spring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0023] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar words used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0024] As shown in Figure 1 to Figure 4As shown, a specific embodiment of this utility model provides a gap adjustment device for an automotive fuel tank gasket mold, including an upper base plate 1 and a lower base plate 2 disposed at the bottom of the upper base plate 1. The upper base plate 1 is provided with an upper mold core 3, and the lower base plate 2 is provided with a lower mold core 4. A middle plate 5 is provided between the upper mold core 3 and the lower mold core 4. A gap adjustment component for preventing poor adhesion of the product is provided between the upper base plate 1 and the lower base plate 2. By setting the gap adjustment component, material will not accumulate in the gap between the middle plate 5 and the lower mold core 4 when the product is formed in the mold, thereby avoiding the phenomenon of poor product adhesion caused by material overflow and accumulation. The gap adjustment component includes a spring seat 6 in the upper base plate 1 and the lower base plate 2. A first spring 7 is snapped onto the spring seat 6 in the upper base plate 1, and a second spring 8 is snapped onto the spring seat 6 in the lower base plate 2. A guide rod 9 is movably passed through the middle plate 5.

[0025] As shown in Figure 1 to Figure 4 As shown, specifically, both the upper mold core 3 and the lower mold core 4 are provided with threaded holes, and a screw 11 is threaded into the threaded holes. Both the upper substrate 1 and the lower substrate 2 are provided with slots 12, and the screw 11 is located between the slot 12 and the threaded hole. Through the cooperation between the threaded hole and the screw 11, the upper mold core 3 is connected to the upper substrate 1, and the lower mold core 4 is connected to the lower substrate 2. The screw 11 in the slot 12 can be rotated to separate the screw 11 from the threaded hole, thereby facilitating the disassembly of the upper mold core 3 and the lower mold core 4.

[0026] This allows for replacement or repair of both components. The lower mold core 4 contains several hoppers 10 for rubber molding. During product molding, the entire mold assembly is installed in the vulcanizing machine. Rubber is placed into the hoppers 10 in the lower mold core 4. At this time, the middle plate 5 is suspended under the action of the second spring 8, resulting in a large space between the middle plate 5 and the lower mold core 4. The vulcanizing machine is started to apply pressure to the upper plate 1. Both the upper plate 1 and the lower plate 2 have connecting holes 13, and the guide rod 9 is located between the connecting holes 13. The surface of the guide rod 9 located at the connecting hole 13 in the upper plate 1 has threads, and a nut 14 is connected to the thread. The upper plate 1 and the upper mold core 3 move downward along the guide rod 9, thereby gradually achieving mold closing. Under the action of the second spring 8, the second spring 8 overcomes the mold closing pressure brought by the upper plate 1 and the upper mold core 3 moving downward along the guide rod 9, thereby causing the upper plate 1 and the upper mold core 3 to first move towards the middle plate 5. As the pressure increases, the upper mold core 3 gradually approaches the lower mold core 4 at the bottom. At this point, the rubber in the hopper 10 is compressed and flows downwards. Because the second spring 8 overcomes the current pressure, a certain gap exists between the middle plate 5 and the lower mold core 4. The rubber can diffuse and flow evenly through this gap, preventing the edge material from accumulating. As the pressure increases, the pressure overcome by the second spring 8 is less than the equipment pressure and the pressure of the first spring 7, causing the middle plate 5 to gradually fit together with the lower mold core 4 to complete the bottom forming of the product. Even if there is an initial gap between the middle plate 5 and the lower mold core 4, the overflowing rubber has already flowed evenly to the surrounding area within the previously formed gap, preventing product accumulation at the gap and thus preventing rubber buildup from adhering to the formed product. While the middle plate 5 gradually fits together with the lower mold core 4, a certain gap still exists between the upper mold core 3 and the middle plate 5. As the pressure continues, the gap between the upper mold core 3 and the middle plate 5... As they gradually come together, the gap allows the rubber to flow back upwards from the gap between the upper mold core 3 and the middle plate 5 until the upper mold core 3 and the middle plate 5 come together. The purpose of this backflow is to fill the space for the upper part of the product to be formed, thereby preventing defects caused by incomplete filling. After the entire mold is closed, the product forming is completed.

[0027] As shown in Figure 3 and Figure 4 As shown, specifically, after prolonged use, the entire device's components and structure...

[0028] The first spring 7 and the second spring 8 are prone to damage or loss of elasticity, thus requiring replacement. A connecting rod 15 is provided in the upper base plate 1, and a connecting block 16 for limiting and fixing the spring seat 6 is fixedly connected to the connecting rod 15. Both the upper base plate 1 and the lower base plate 2 are provided with receiving grooves 17. The spring seat 6 is provided with a slot 18 adapted to the connecting block 16, and the connecting block 16 is located in the slot 18. A third spring 19 is fixedly connected to the connecting block 16. A rotating block is fixedly connected to the connecting rod 15, and the rotating block is provided with an anti-slip rubber pad. Pulling the rotating block drags the connecting rod 15, thereby pulling the connecting block 16 out of the slot 18. At this time, the third spring 19 contracts under force, generating a reaction force. After the connecting block 16 disengages from the slot 18 and enters the receiving groove 17, the connecting block 16 no longer connects the spring seat 6 to the upper base plate 1 or the lower base plate 2. Therefore, the first spring 7 or the second spring 8 that the spring seat 6 is engaged with can be removed. Remove and replace the spring seat 6. After replacement, insert the spring seat 6 back into the upper substrate 1 or the lower substrate 2. Remove the pull block so that the connecting block 16 is engaged into the slot 18 under the reaction force of the third spring 19, thereby completing the limiting and fixing of the spring seat 6.

[0029] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0030] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, 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.

Claims

1. A gap adjusting device for a gasket mold of an automobile fuel tank, comprising an upper base plate (1) and a lower base plate (2) provided at the bottom of the upper base plate (1), characterized in that, The upper substrate (1) is provided with an upper mold core (3), the lower substrate (2) is provided with a lower mold core (4), and the upper mold core (3) and the lower mold core (4) are provided with a middle plate (5) therebetween; The upper substrate (1) and the lower substrate (2) are provided with a gap adjusting assembly for preventing poor adhesion of products, the gap adjusting assembly comprises spring seats (6) in the upper substrate (1) and the lower substrate (2), the spring seat (6) in the upper substrate (1) is clamped with a first spring (7), the spring seat (6) in the lower substrate (2) is clamped with a second spring (8), and the middle plate (5) is movably penetrated by a guide rod (9).

2. A fuel tank gasket mold gap adjustment apparatus for a vehicle as set forth in claim 1, characterized by, The upper mold core (3) and the lower mold core (4) are provided with a plurality of material bins (10) for rubber molding.

3. A fuel tank gasket mold gap adjustment apparatus for a vehicle as set forth in claim 1, characterized by, The upper mold core (3) and the lower mold core (4) are provided with threaded holes, and the threaded holes are threadedly connected with a screw rod (11), the upper substrate (1) and the lower substrate (2) are provided with a slot hole (12), and the screw rod (11) is located between the slot hole (12) and the threaded hole.

4. A fuel tank gasket mold gap adjustment apparatus for a vehicle as set forth in claim 1, characterized by, The upper substrate (1) and the lower substrate (2) are provided with connecting holes (13), and the guide rod (9) is located between the connecting holes (13), and the part of the surface of the guide rod (9) located in the connecting hole (13) of the upper substrate (1) is provided with a thread, and the thread is connected with a nut (14).

5. A fuel tank gasket mold gap adjustment apparatus for a vehicle as set forth in claim 1, characterized by, The upper substrate (1) is provided with a connecting rod (15), and the connecting rod (15) is fixedly connected with a connecting block (16) for limiting and fixing the spring seat (6).

6. A fuel tank gasket mould gap adjustment device for a motor vehicle as claimed in claim 5, characterised in that, The upper substrate (1) and the lower substrate (2) are provided with accommodating grooves (17), the spring seat (6) is provided with a clamping groove (18) matched with the connecting block (16), and the connecting block (16) is located in the clamping groove (18).

7. A fuel tank gasket mold gap adjustment apparatus for a vehicle as set forth in claim 5, characterized by The connecting block (16) is fixedly connected with a third spring (19), the connecting rod (15) is fixedly connected with a rotating block, and the rotating block is provided with an anti-skid rubber pad.

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