A fuel filter cover die casting apparatus and method

Abstract

This invention discloses a fuel filter cap die-casting equipment and method. The bottom surface of the upper die-casting mold has an annular groove, within which an annular pressure head is located. A connecting rod is mounted on the annular pressure head, and the connecting rod is connected to a mounting plate. A first cylinder connected to the upper die-casting mold is mounted on the mounting plate. The lower die-casting mold has multiple through holes corresponding to the annular groove along its circumferential direction. A pressure column is inserted into each through hole, and the inner end of the pressure column has a protrusion that can contact the annular pressure head. A sealing plate is connected to the outer end of the pressure column, and a connecting plate is connected to the side of the sealing plate. The outer end of the connecting plate is connected to the shaft of a rotary motor. A second cylinder is connected to the bottom side of the rotary motor and is mounted on a bracket fixed to the side of the lower die-casting mold. A feed hole is provided through the sealing plate, connecting plate, and shaft, with the outlet of the feed hole located on the end face of the sealing plate. This fuel filter cap die-casting equipment can simultaneously complete the die-casting of the fuel filter cap and the sealing ring during the die-casting process, ensuring a tight connection between the two.

Description

Technical Field

[0001] This invention relates to die casting, and more specifically, to a fuel filter cap die casting apparatus and method. Background Technology

[0002] Fuel filter caps typically consist of a metal cap and an elastic rubber gasket, which achieve both fixation and sealing through elastic deformation. When installing a fuel filter, the metal cap and rubber gasket clamp together, forming a ring-shaped clamping force that secures the filter to the filter housing.

[0003] The existing metal caps and rubber gaskets are both of a separate structure, and the processing is also carried out separately. Therefore, it is necessary to set up separate die-casting production lines for rubber gaskets and die-casting production lines for metal caps, which also requires an increase in labor. Therefore, this method is no longer conducive to improving the production efficiency of fuel filter caps. Summary of the Invention

[0004] The purpose of this invention is to provide a fuel filter cap die-casting equipment and method. This fuel filter cap die-casting equipment can simultaneously complete the die-casting of the fuel filter cap and the sealing ring during the die-casting process, so that the two are tightly connected together.

[0005] To achieve the above objectives, the present invention provides a fuel filter cap die-casting device, comprising an upper die-casting mold and a lower die-casting mold. The bottom surface of the upper die-casting mold has an annular groove, and an annular pressure head is disposed within the annular groove. A connecting rod extending beyond the upper die-casting mold is disposed on the annular pressure head. Multiple connecting rods are connected to a mounting plate. A first cylinder connected to the upper die-casting mold is mounted on the mounting plate. The lower die-casting mold has multiple through holes corresponding to the annular groove along its circumferential direction. A pressure column is inserted into each through hole. The inner end of the pressure column has a protrusion capable of contacting the annular pressure head. A sealing plate is connected to the outer end of the pressure column. A connecting plate is connected to the side of the sealing plate. The outer end of the connecting plate is connected to the shaft of a rotary motor. A second cylinder is connected to the bottom side of the rotary motor. The second cylinder is mounted on a bracket fixed to the side of the lower die-casting mold. A feed hole is provided through the sealing plate, connecting plate, and shaft. The outlet of the feed hole is located on the end face of the sealing plate.

[0006] Preferably, the die-casting lower mold has a central hole, and an elastic reset slide plate is provided in the central hole. The lower end of the die-casting upper mold has a boss that can extend into the central hole.

[0007] Preferably, a reaction frame is provided outside the die-casting lower mold, and a telescopic rod is provided between the elastic reset slide plate and the reaction frame, with a reset spring sleeved on the telescopic rod.

[0008] Preferably, the reaction frame includes a support plate, and the support plate is fixedly connected to the outer end face of the die-casting lower mold by a plurality of support columns.

[0009] Preferably, the die-casting upper mold is provided with a plurality of arc-shaped holes that connect the annular groove and are used for the connecting rod to pass through.

[0010] Preferably, the bottom surface of the annular pressure head is provided with an annular groove.

[0011] Preferably, the end face of the sealing plate is provided with an extension post that can fit into the through hole, and the feed hole extends along the axial direction of the extension post.

[0012] Preferably, an electric heating coil is provided outside the extension column.

[0013] In another aspect, the present invention provides a method for die-casting a fuel filter cap, which uses the aforementioned fuel filter cap die-casting apparatus and includes the following steps:

[0014] S1, the annular pressure head is pushed out of the bottom surface of the die-casting upper mold by the first cylinder, so that an annular limiting groove is formed on the surface of the die-casting part;

[0015] S2, the second cylinder pushes the angle motor to move upward, and the angle motor switches the pressure column to extend upward into the through hole so that the protrusion can contact the annular pressure head;

[0016] S3, the die-casting operation is performed by pushing the die-casting upper mold downward through the external loading unit. After the die-casting is completed, a positioning hole is formed through the protrusion and a positioning groove is formed at the end of the pressure column.

[0017] S4, by cooperating with the second cylinder and the corner motor, the orientation of the sealing plate is switched and the through hole is covered, while the first cylinder drives the annular pressure head to move into the annular groove;

[0018] S5, sealant is sequentially filled into the positioning groove, positioning hole, annular limiting groove and annular groove located below the annular pressure plate through the feed hole;

[0019] S6. After the filling is completed, the ring head is driven by the first cylinder to press down and perform secondary die casting on the filled sealing material to form a sealing ring.

[0020] S7, demolding, removing excess sealing material located in the through hole.

[0021] According to the above technical solution, the fuel filter cover die-casting equipment of the present invention can simultaneously complete the die-casting of the fuel filter cover and the sealing ring during die-casting, so that the two are tightly connected together, improving the sealing effect and shortening the assembly process.

[0022] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram of a preferred embodiment of a fuel filter cap die-casting device;

[0025] Figure 2 yes Figure 1 Another structural diagram from another perspective;

[0026] Figure 3 yes Figure 1 A top-view structural diagram;

[0027] Figure 4 yes Figure 3 A schematic diagram of the AA cross-sectional structure;

[0028] Figure 5 yes Figure 4 A magnified schematic diagram of a portion of region B in the middle;

[0029] Figure 6 This is a schematic diagram of the fuel filter cap structure after die casting.

[0030] Explanation of reference numerals in the attached figures

[0031] 1-Die casting upper mold; 2-Die casting lower mold; 3-Second cylinder; 4-Bracket; 5-Shaft; 6-Feed hole; 7-Corner motor; 8-Reset spring; 9-Support plate; 10-Support column; 11-Connecting rod; 12-First cylinder; 13-Mounting plate; 14-Arc-shaped hole; 15-Connecting plate; 16-Outlet; 17-Elastic reset slide plate; 18-Sealing plate; 19-Boss; 20-Telescopic rod; 21-Annular pressure head; 22-Mold cavity; 23-Protrusion; 24-Annular groove; 25-Pressure column; 26-Sealing ring. Detailed Implementation

[0032] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0033] In this invention, unless otherwise stated, directional terms such as "up, down, left, right, front, back, inside, outside" in the terminology only represent the orientation of the term in its normal use or are common terms understood by those skilled in the art, and should not be regarded as a limitation on the term.

[0034] See Figure 1-5 The fuel filter cap die-casting equipment shown includes an upper die-casting mold 1 and a lower die-casting mold 2. The bottom surface of the upper die-casting mold 1 has an annular groove, within which an annular pressure head 21 is disposed. A connecting rod 11 extending beyond the upper die-casting mold 1 is mounted on the annular pressure head 21. Multiple connecting rods 11 are connected to a mounting plate 13. A first cylinder 12 connected to the upper die-casting mold 1 is mounted on the mounting plate 13. The lower die-casting mold 2 has multiple through holes along its circumferential direction corresponding to the annular groove. Pressure columns 25 are inserted into these through holes. The inner end of the column 25 is provided with a protrusion 23 that can contact the annular pressure head 21. The outer end of the pressure column 25 is connected to a sealing plate 18. The side of the sealing plate 18 is connected to a connecting plate 15. The outer end of the connecting plate 15 is connected to the shaft 5 of the angle motor 7. The bottom side of the angle motor 7 is connected to a second cylinder 3. The second cylinder 3 is mounted on a bracket 4 fixed to the side of the die-casting lower mold 2. A feed hole 6 is provided through the sealing plate 18, the connecting plate 15 and the shaft 5. The outlet 16 of the feed hole 6 is located on the end face of the sealing plate 18.

[0035] Through the implementation of the above technical solution, after the die-casting upper mold 1 and die-casting lower mold 2 are closed, a mold cavity 22 is formed. In use, the first cylinder 12 pushes the annular pressure head 21 to protrude from the bottom surface of the die-casting upper mold 1, so that an annular limiting groove is formed on the surface of the die-casting part; the second cylinder 3 pushes the angle motor 7 to move upward, and the angle motor 7 switches the pressure column 25 to extend upward into the through hole so that the protrusion 23 can contact the annular pressure head 21; the external loading unit pushes the die-casting upper mold 1 downward to perform the die-casting operation. After the die-casting is completed, the die-casting is performed by... The protrusion 23 has a positioning hole, and the end of the pressure column 25 has a positioning groove. The sealing plate 18 is switched to face and cover the through hole by the cooperation of the second cylinder 3 and the rotary motor 7. Simultaneously, the annular pressure head 21 is driven upwards into the annular groove by the first cylinder 12. Sealing material is sequentially filled into the positioning groove, positioning hole, annular limiting groove, and the annular groove located below the annular pressure plate through the feed hole 6. After filling, the annular pressure head 21 is driven downwards by the first cylinder 12 to perform secondary die casting on the filled sealing material, thereby forming... Figure 6 The sealing ring 26 is shown; finally, demolding is performed to remove excess sealing material located in the through hole.

[0036] The fuel filter cap die-casting equipment can simultaneously complete the die-casting of the fuel filter cap and the sealing ring 26 during the die-casting process, so that the two are tightly connected together, improving the sealing effect and shortening the assembly process.

[0037] In this embodiment, the lower die-casting mold 2 has a central hole, and an elastic reset sliding plate 17 is disposed within the central hole. The lower end of the upper die-casting mold 1 has a boss 19 that can extend into the central hole. This configuration allows for the die-casting of a fuel filter cap with a central through-hole. Before die-casting, the inner side of the elastic reset sliding plate 17 is flush with the inner bottom surface of the lower die-casting mold 2. During the die-casting process, the boss 19 pushes open the elastic reset sliding plate 17, thereby forming a central non-die-cast area.

[0038] In this embodiment, to further provide an elastic reset structure for the elastic reset component, a reaction frame is provided outside the die-casting lower mold 2, and a telescopic rod 20 is provided between the elastic reset slide plate 17 and the reaction frame. A reset spring 8 is sleeved on the telescopic rod 20. When the boss 19 presses against the elastic reset slide plate 17, the spring is compressed, and the reaction frame is subjected to force; conversely, the reset spring 8 resets, and the elastic reset slide plate 17 returns to its original position.

[0039] In this embodiment, to further provide a reaction frame, the reaction frame includes a support plate 9, and the support plate 9 is fixedly connected to the outer end face of the die-casting lower mold 2 by a plurality of support columns 10.

[0040] In this embodiment, the die-casting upper mold 1 is provided with a plurality of arc-shaped holes 14 that connect to the annular groove and are used for the connecting rod 11 to pass through. This arrangement facilitates the passage of the connecting rod 11.

[0041] In this embodiment, the bottom surface of the annular pressure head 21 is provided with an annular groove 24. With this configuration, the surface of the sealing ring 26 with different surface shapes can be die-cast by adjusting the shape of the annular groove 24 to meet more requirements.

[0042] In this embodiment, the end face of the sealing plate 18 is provided with an extension post that can fit into the through hole, and the feed hole 6 extends axially along the extension post. This arrangement minimizes the volume of sealing material filling the through hole, reducing material waste.

[0043] In this embodiment, an electric heating coil is provided outside the extension column. With this arrangement, after the sealing material is die-cast, the excess sealing material is heated by the electric heating coil to soften it, thereby facilitating demolding.

[0044] In another aspect, the present invention provides a method for die-casting a fuel filter cap, which uses the aforementioned fuel filter cap die-casting apparatus and includes the following steps:

[0045] S1, the first cylinder 12 pushes the annular pressure head 21 to protrude from the bottom surface of the die-casting upper mold 1, and forms an annular limiting groove on the surface of the die-casting part;

[0046] S2, the second cylinder 3 pushes the angle motor 7 to move upward, and the angle motor 7 switches the pressure column 25 to extend upward into the through hole so that the protrusion 23 can contact the annular pressure head 21;

[0047] S3, the die-casting upper mold 1 is pushed down by the external loading unit to perform the die-casting operation. After the die-casting is completed, a positioning hole is formed through the protrusion 23, and a positioning groove is formed at the end of the pressure column 25.

[0048] S4, by cooperating with the second cylinder 3 and the corner motor 7, the sealing plate 18 is switched to face and cover the through hole, while the first cylinder 12 drives the annular pressure head 21 to move upward into the annular groove;

[0049] S5, sealant is sequentially filled into the positioning groove, positioning hole, annular limiting groove and annular groove located below the annular pressure plate through the feed hole 6;

[0050] S6. After the filling is completed, the first cylinder 12 drives the annular pressure head 21 to press down, and the filled sealing material is die-cast a second time to form a sealing ring 26.

[0051] S7, demolding, removing excess sealing material located in the through hole.

[0052] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0053] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0054] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. An apparatus for die casting a fuel filter cover, characterized by, The die includes a die-casting upper mold (1) and a die-casting lower mold (2). The bottom surface of the die-casting upper mold (1) is provided with an annular groove, and an annular pressure head (21) is provided in the annular groove. A connecting rod (11) extending to the outside of the die-casting upper mold (1) is provided on the annular pressure head (21). Multiple connecting rods (11) are connected to a mounting plate (13). A first cylinder (12) connected to the die-casting upper mold (1) is installed on the mounting plate (13). Multiple through holes corresponding to the annular groove are provided on the circumferential direction of the die-casting lower mold (2). A pressure column (25) is inserted into the through hole. The inner end of the pressure column (25) is provided with a force that can connect with the annular groove. The protrusion (23) in contact with the annular pressure head (21) has a sealing plate (18) connected to the outer end of the pressure column (25). A connecting plate (15) is connected to the side of the sealing plate (18). The outer end of the connecting plate (15) is connected to the shaft (5) of the angle motor (7). A second cylinder (3) is connected to the bottom side of the angle motor (7). The second cylinder (3) is mounted on a bracket (4) fixed to the side of the die-casting lower mold (2). A feed hole (6) is provided through the sealing plate (18), the connecting plate (15) and the shaft (5). The outlet (16) of the feed hole (6) is located on the end face of the sealing plate (18).

2. The fuel filter cover pressure casting apparatus according to claim 1, characterized by, The die-casting lower mold (2) has a central hole, and an elastic reset slide plate (17) is provided in the central hole. The lower end of the die-casting upper mold (1) has a boss (19) that can extend into the central hole.

3. The fuel filter cover pressure casting apparatus according to claim 2, characterized by, A reaction frame is provided outside the die-casting lower mold (2), and a telescopic rod (20) is provided between the elastic reset slide plate (17) and the reaction frame. A reset spring (8) is provided on the telescopic rod (20).

4. The fuel filter cover pressure casting apparatus according to claim 3, characterized by, The reaction frame includes a support plate (9), which is fixedly connected to the outer end face of the die-casting lower mold (2) by a plurality of support columns (10).

5. The fuel filter cap die-casting equipment according to claim 1, characterized in that, The die-casting upper mold (1) is provided with a plurality of arc-shaped holes (14) that connect the annular groove and are used to pass through the connecting rod (11).

6. The fuel filter cap die-casting equipment according to claim 1, characterized in that, The bottom surface of the annular pressure head (21) is provided with an annular groove (24).

7. The fuel filter cap die-casting equipment according to claim 1, characterized in that, The end face of the sealing plate (18) is provided with an extension post that can fit into the through hole, and the feed hole (6) extends along the axial direction of the extension post.

8. The fuel filter cap die-casting equipment according to claim 7, characterized in that, An electric heating coil is installed outside the extension column.

9. A method for die-casting a fuel filter cap, characterized in that, The fuel filter cap die-casting method uses the fuel filter cap die-casting equipment according to any one of claims 1-8, and includes the following steps: S1, the first cylinder (12) pushes the annular pressure head (21) to protrude from the bottom surface of the die-casting upper mold (1), and forms an annular limiting groove on the surface of the die-casting part; S2, the second cylinder (3) pushes the angle motor (7) to move upward, and the angle motor (7) switches the pressure column (25) to extend upward into the through hole so that the protrusion (23) can contact the annular pressure head (21); S3, the die casting upper mold (1) is pushed down by the external loading unit to perform die casting operation. After die casting is completed, a positioning hole is formed through the protrusion (23) and a positioning groove is formed at the end of the pressure column (25). S4, by cooperating with the second cylinder (3) and the corner motor (7), the sealing plate (18) is switched to face and cover the through hole, and at the same time, the first cylinder (12) drives the annular pressure head (21) to move upward into the annular groove; S5, through the feed hole (6), sealant is sequentially filled into the positioning groove, positioning hole, annular limiting groove and annular groove located below the annular pressure plate; S6. After the filling is completed, the first cylinder (12) drives the annular pressure head (21) to press down and perform secondary die casting on the filled sealing material to form a sealing ring (26). S7, demolding, removing excess sealing material located in the through hole.

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