Product mold for filter housing of three-filter system with starting tooth positioning structure

Abstract

This invention belongs to the field of building technology, and particularly relates to a mold for a filter cover product of a three-filter system with a starting tooth positioning structure. The invention includes an upper mold for forming the cover and a lower mold for forming the cover, with an injection molded part positioned above the upper mold. The invention uses a starting tooth positioning component to abut and fix the rear mold insert, ensuring that the starting tooth of the rear mold insert is located at a designated position in the rear mold core. The internal structure of the mold guarantees the position of the starting tooth of the cover product, preventing displacement of the starting tooth and achieving high injection precision. During production, the water-cooled mold platen's piping structure can inject cooling water to control the mold temperature, preventing slight changes due to overheating and further ensuring the position of the starting tooth. During production, a cover size limiting component assists in forming and limiting the product. After production, the cover size limiting component can also be used to measure whether the product height has changed, ensuring high accuracy.

Description

Technical Field

[0001] This invention belongs to the field of mold technology and relates to a mold for a filter cover of a three-filter system with a starting tooth positioning structure. Background Technology

[0002] "Three filters" is a long-established industry term representing three commonly used automotive components: oil filter, fuel filter, and air filter. They are responsible for filtering media in the lubrication system, combustion system, and engine intake system, respectively. One component in the diesel engine filter assembly is the filter housing, which has an internal threaded structure. When manufactured using injection molding, the starting thread position of the filter housing is prone to deviation, resulting in poor thread accuracy. Furthermore, during high-temperature injection molding, slight mold changes can further cause the starting thread position of the filter housing to shift. Customers assemble filter assemblies using automated systems. When the starting thread deviates from the tolerance range, the automatic line torque also deviates from the tolerance range, triggering an alarm and stopping operation, severely impacting production cycle time. Therefore, it is urgently necessary to design a mold for a three-filter system filter housing product with a starting thread positioning structure that can overcome these defects.

[0003] In order to overcome the shortcomings of existing technologies, people have continuously explored and proposed various solutions. For example, a Chinese patent discloses an air filter mold [application number: 201510124728.X], which includes an upper cover, an upper mold, a lower mold and a base plate. The upper mold is fixed to the upper cover by screws, and the lower mold is fixed to the base plate by screws. One upper mold corresponds to one lower mold. Multiple upper molds are installed on each upper cover, and multiple lower molds are installed on each base plate. Summary of the Invention

[0004] The purpose of this invention is to address the above-mentioned problems by providing a mold for a filter housing of a three-filter system with a starting tooth positioning structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solutions:

[0006] A mold for a filter housing of a three-filter system with a starting tooth positioning structure includes an upper mold for housing formation and a lower mold for housing formation. An injection molded part is provided above the upper mold for housing formation. A front mold core and a rear mold core are provided between the upper mold for housing formation and the lower mold for housing formation. A starting tooth positioning component and a housing size limiting component are provided between the front mold core and the rear mold core. A water-cooling and temperature-controlling template and a product assembly and fixing module are provided below the lower mold for housing formation. A rear mold insert is also provided between the front mold core and the rear mold core. The rear mold insert passes through the lower mold for housing formation, the water-cooling and temperature-controlling template, and the product assembly and fixing module in sequence. The starting tooth positioning component and the housing size limiting component are respectively positioned corresponding to the rear mold insert.

[0007] In the above-mentioned mold for the filter cover of the three-filter system with the starting tooth positioning structure, the starting tooth positioning component includes a sealed molding slide disposed between the front mold core and the rear mold core. The sealed molding slide is provided with an insert positioning component, which abuts and cooperates with the rear mold insert. The sealed molding slide abuts and cooperates with the cover size limiting component.

[0008] In the above-mentioned mold for the filter housing of the three-filter system with the starting tooth positioning structure, the insert positioning component includes a positioning pin fixing block set on the sealed molding slide, the positioning pin fixing block is provided with a positioning pin, and the positioning pin abuts and cooperates with the rear mold insert.

[0009] In the above-mentioned mold for the filter cover of the three-filter system with the starting tooth positioning structure, the lower mold for forming the cover is provided with a sliding cylinder, and the power shaft of the sliding cylinder is connected to the sealed forming sliding block.

[0010] In the above-mentioned mold for the filter housing of a three-filter system with a starting tooth positioning structure, the housing size limiting component includes three size limiting forming seats disposed between the front mold core and the rear mold core. Two adjacent size limiting forming seats abut against each other. The size limiting forming seats correspond to the position of the rear mold insert. The sealing forming slide abuts against the size limiting forming seats.

[0011] In the above-mentioned mold for the outer cover of the three-filter system with the starting tooth positioning structure, the water-cooling template is provided with a mold injection temperature control cooling pipe, and the mold injection temperature control cooling pipe is staggered with the rear mold insert.

[0012] In the above-mentioned mold for the filter cover of the three-filter system with the starting tooth positioning structure, the injection molded part includes an injection main plate disposed above the upper mold of the cover forming, and the injection main plate is provided with an injection main cylinder, which is positioned opposite to the rear mold insert.

[0013] In the above-mentioned product mold for the filter housing of the three-filter system with the starting tooth positioning structure, the product assembly and fixing module includes a first assembly template, a second assembly template, a third assembly template, and a bottom template of the three-filter system device, which are set below the water temperature control template. The rear mold insert passes through the first assembly template, the second assembly template, the third assembly template, and the bottom template of the three-filter system device in sequence.

[0014] In the above-mentioned mold for the filter housing of the three-filter system with the starting tooth positioning structure, the first assembly template is provided with an insert rotating tooth sleeve, which rotates and engages with the rear mold insert.

[0015] In the above-mentioned mold for the outer cover of the three-filter system filter with the starting tooth positioning structure, the bottom template is provided with an insert abutting screw plate, which abuts and cooperates with the rear mold insert, and the insert abutting screw plate is fixed to the bottom template by screws.

[0016] Compared with existing technologies, the advantages of this invention are:

[0017] 1. Before injection molding, this invention assembles the three-filter system with the mold and places the three-filter system inside the mold. At this time, the upper mold and lower mold of the outer cover are brought close to each other, so that the front mold core and the rear mold core abut against each other. The rear mold insert is inserted between the front mold core and the rear mold core to form the cavity of the outer cover product to be produced. The starting tooth positioning component abuts and fixes the rear mold insert to ensure that the starting tooth of the rear mold insert is located at the designated position of the rear mold core. The internal structure of the mold ensures the position of the starting tooth of the outer cover product and avoids the starting tooth of the product from being offset, resulting in high injection precision. During the production process, the water-cooled temperature control platen can inject cooling water to control the temperature of the mold and prevent the mold from changing slightly due to overheating, further ensuring the position of the starting tooth. During production, the outer cover size limiting component assists in the forming and limits the product. After production, the outer cover size limiting component can also be used to measure whether the product height has changed, resulting in high precision.

[0018] 2. In this invention, when fixing the rear mold insert, the insert is fixed with screws between the abutting screw plate and the bottom template to abut and fix the bottom of the rear mold insert, so as to prevent the rear mold insert from falling off. When demolding, the screws are removed and the rear mold insert can be taken out from the front.

[0019] Other advantages, objectives and features of the present invention will become apparent in part from the following description, and in part from those skilled in the art through study and practice of the invention. Attached Figure Description

[0020] Figure 1This is a schematic diagram of the structure of the present invention.

[0021] Figure 2 This is a partial structural schematic diagram of the present invention.

[0022] Figure 3 This is a partial structural schematic diagram of another aspect of the present invention.

[0023] Figure 4 This is a partial structural schematic diagram of another aspect of the present invention.

[0024] In the diagram: 1. Upper mold for outer cover forming; 2. Lower mold for outer cover forming; 3. Injection part; 4. Front mold core; 5. Rear mold core; 6. Starting tooth positioning component; 7. Outer cover size limiting component; 8. Water-cooling and temperature-controlled template; 9. Product assembly and fixing module; 10. Rear mold insert; 11. Sealing molding slide; 12. Insert positioning component; 13. Positioning pin fixing block; 14. Positioning pin; 15. Slide cylinder; 16. Size limiting molding seat; 17. Mold injection temperature control and cooling pipeline; 18. Injection main board; 19. Injection main cylinder; 20. First assembly template for three-filter system device; 21. Second assembly template for three-filter system device; 22. Third assembly template for three-filter system device; 23. Bottom template; 24. Insert rotating tooth sleeve; 25. Insert abutment screw plate. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] like Figure 1-4 As shown, a mold for a filter housing of a three-filter system with a starting tooth positioning structure includes an upper mold 1 and a lower mold 2 for housing forming. An injection molded part 3 is provided above the upper mold 1. A front mold core 4 and a rear mold core 5 are provided between the upper mold 1 and the lower mold 2. A starting tooth positioning component 6 and a housing size limiting component 7 are provided between the front mold core 4 and the rear mold core 5. A water-cooling and temperature-controlled template 8 and a product assembly and fixing module 9 are provided below the lower mold 2. A rear mold insert 10 is also provided between the front mold core 4 and the rear mold core 5. The rear mold insert 10 passes through the lower mold 2, the water-cooling and temperature-controlled template 8, and the product assembly and fixing module 9 in sequence. The starting tooth positioning component 6 and the housing size limiting component 7 correspond to the positions of the rear mold insert 10, respectively.

[0027] In this embodiment, before injection molding, the three-filter system device is assembled with the mold and placed inside the mold. At this time, the upper mold 1 and the lower mold 2 of the outer cover are brought close to each other, so that the front mold core 4 and the rear mold core 5 abut against each other. The rear mold insert 10 is inserted between the front mold core 4 and the rear mold core 5 to form the cavity of the outer cover product to be produced. The starting tooth positioning component 6 abuts and fixes the rear mold insert 10 to ensure that the starting tooth of the rear mold insert 10 is located at the designated position of the rear mold core 5. The internal structure of the mold ensures the position of the starting tooth of the outer cover product and avoids the starting tooth of the product from shifting, resulting in high injection molding accuracy. During the production process, the pipeline structure of the water-cooled temperature control template 8 can inject cooling water to control the temperature of the mold and prevent the mold from changing slightly due to overheating, further ensuring the position of the starting tooth. During production, the outer cover size limiting component 7 assists in the molding and limits the product. After production, the outer cover size limiting component 7 can also be used to measure whether the product height has changed, resulting in high accuracy.

[0028] Combination Figure 1-4 As shown, the starting tooth positioning component 6 includes a sealed molding slide 11 disposed between the front mold core 4 and the rear mold core 5. The sealed molding slide 11 is provided with an insert positioning component 12, which abuts and cooperates with the rear mold insert 10. The sealed molding slide 11 abuts and cooperates with the outer cover size limiting component 7.

[0029] Specifically, during the injection molding process, the rear mold insert 10 is inserted between the front mold core 4 and the rear mold core 5 to form the cavity of the outer cover product to be produced. At this time, the sealing molding slide 11 is moved towards the end closer to the rear mold insert 10, which drives the insert positioning member 12 to move synchronously. The insert positioning member 12 abuts and fixes the rear mold insert 10, and engages with the hole and groove structure of the rear mold insert 10 to ensure that the starting tooth of the rear mold insert 10 is located at the designated position of the rear mold core 5. The internal structure of the mold ensures the position of the starting tooth of the outer cover product, avoids the starting tooth of the product from shifting, and achieves high injection molding accuracy.

[0030] Combination Figure 1-4 As shown, the insert positioning component 12 includes a positioning pin fixing block 13 disposed on the sealed molding slide block 11, and a positioning pin 14 is provided in the positioning pin fixing block 13. The positioning pin 14 abuts and cooperates with the rear mold insert 10.

[0031] In this embodiment, during the injection molding process, the rear mold insert 10 is inserted between the front mold core 4 and the rear mold core 5 to form the cavity of the outer cover product to be produced. At this time, the sealing molding slide 11 is moved towards the end close to the rear mold insert 10, which drives the positioning pin fixing block 13 to move synchronously. The positioning pin 14 abuts and fixes the rear mold insert 10, and engages with the hole and groove structure of the rear mold insert 10 to ensure that the starting tooth of the rear mold insert 10 is located at the designated position of the rear mold core 5. The internal structure of the mold ensures the position of the starting tooth of the outer cover product, avoids the starting tooth of the product from shifting, and achieves high injection molding accuracy.

[0032] The outer cover forming lower mold 2 is provided with a sliding cylinder 15, and the power shaft of the sliding cylinder 15 is connected to the sealed forming sliding block 11.

[0033] In this embodiment, when it is necessary to move the sealing molding slide 11, the slide cylinder 15 can be activated, which has a high degree of automation.

[0034] Combination Figure 2 As shown, the outer cover size limiting component 7 includes three size limiting molding seats 16 disposed between the front mold core 4 and the rear mold core 5. Two adjacent size limiting molding seats 16 abut against each other. The size limiting molding seats 16 correspond to the position of the rear mold insert 10. The sealing molding slide 11 abuts against the size limiting molding seats 16.

[0035] In this embodiment, during the injection molding process, the rear mold insert 10, the dimension height limiting molding seat 16, the sealing molding slide 11, the front mold core 4 and the rear mold core 5 cooperate to form a complete cavity. After production, the dimension height limiting molding seat 16 can be used to measure whether the product height has changed, which is highly accurate.

[0036] Combination Figure 4 As shown, the water-cooling template 8 is provided with a mold injection temperature control and cooling pipe 17, which is staggered with the rear mold insert 10.

[0037] In this embodiment, during the production process, cooling water can be injected into the mold injection temperature control cooling pipe 17 of the water-cooled template 8 to control the temperature of the mold, prevent the mold from changing slightly due to overheating, and further ensure the position of the starting tooth forming.

[0038] The injection molded part 3 includes an injection main plate 18 disposed above the outer cover molding upper mold 1, and an injection main cylinder 19 disposed inside the injection main plate 18. The injection main cylinder 19 is disposed opposite to the rear mold insert 10.

[0039] In this embodiment, during the injection molding process, the molten material is injected into the cavity through the injection main cylinder 19 inside the injection main plate 18.

[0040] Combination Figure 2 As shown, the product assembly and fixing module 9 includes a first assembly template 20, a second assembly template 21, a third assembly template 22, and a bottom template 23 for the three-filter system device, which are disposed below the water-cooling and temperature-controlled template 8. The rear mold insert 10 passes through the first assembly template 20, the second assembly template 21, the third assembly template 22, and the bottom template 23 of the three-filter system device in sequence.

[0041] In this embodiment, before injection molding, the three-filter system device is placed inside the mold. The first assembly template 20 of the three-filter system device is provided with several gear grooves for installing and fixing the gears in the three-filter system device. The second assembly template 21, the third assembly template 22 and the bottom template 23 of the three-filter system device are used to install and fix the remaining parts of the three-filter system device.

[0042] Combination Figure 3 , Figure 4 As shown, the first assembly template 20 is provided with an insert rotating toothed sleeve 24, which rotates and engages with the rear mold insert 10.

[0043] In this embodiment, during the assembly process, the axial position of the rear mold insert 10 is fixed by the insert rotating toothed sleeve 24. During demolding, the insert rotating toothed sleeve 24 is rotated to detach from the rear mold insert 10.

[0044] Combination Figure 4 As shown, the bottom template 23 is provided with an insert abutting screw plate 25, which abuts and cooperates with the rear mold insert 10. The insert abutting screw plate 25 and the bottom template 23 are fixed by screws.

[0045] In this embodiment, when fixing the rear mold insert 10, the insert is fixed between the screw plate 25 and the bottom template 23 with screws to abut and fix the bottom of the rear mold insert 10 to prevent the rear mold insert 10 from falling off. When demolding, the screws are removed and the rear mold insert 10 can be taken out from the front.

[0046] The working principle of this invention is:

[0047] Before injection molding, the three-filter system is assembled with the mold. The three-filter system is placed inside the mold. At this time, the upper mold 1 and the lower mold 2 are brought closer together, so that the front mold core 4 and the rear mold core 5 abut against each other. The rear mold insert 10 is inserted between the front mold core 4 and the rear mold core 5. A complete cavity is formed through the cooperation of the rear mold insert 10, the height-limiting molding seat 16, the sealing molding slide 11, the front mold core 4, and the rear mold core 5. During injection molding, the rear mold insert 10 is inserted into the front mold core 4. Between the mold core 5 and the rear mold insert 11, the required cavity for the outer cover product is formed. At this time, the sealing molding slide 11 is moved towards the end closer to the rear mold insert 10, causing the positioning pin fixing block 13 to move synchronously. The positioning pin 14 abuts and fixes the rear mold insert 10, engaging with the slot structure of the rear mold insert 10 to ensure that the starting tooth of the rear mold insert 10 is located at the designated position on the rear mold core 5. The internal structure of the mold ensures the position of the starting tooth of the outer cover product, preventing the starting tooth from shifting, resulting in high injection molding precision.

[0048] After production, the product height can be measured using the height-limiting molding seat 16 to check for any changes, ensuring high precision. The water-cooled mold injection temperature control cooling pipe 17 of the water-cooled mold platen 8 can inject cooling water to control the mold temperature, preventing slight changes due to overheating. This further ensures the position of the starting tooth formation. The starting tooth positioning component 6 abuts and fixes the rear mold insert 10, ensuring the starting tooth of the rear mold insert 10 is located at the designated position of the rear mold core 5. The internal structure of the mold guarantees the position of the starting tooth of the outer casing product, preventing displacement of the starting tooth and ensuring high injection precision.

[0049] When it is necessary to move the sealing and molding slide 11, simply activate the slide cylinder 15; the process is highly automated.

[0050] During the injection molding process, molten material is injected into the mold cavity through the injection main cylinder 19 inside the injection main plate 18.

[0051] Before injection molding, the three-filter system device is placed inside the mold. The first assembly template 20 of the three-filter system device has several gear slots for installing and fixing the gears in the three-filter system device. The second assembly template 21, the third assembly template 22, and the bottom template 23 of the three-filter system device are used to install and fix the remaining components of the three-filter system device.

[0052] During assembly, the axial position of the rear mold insert 10 is fixed by the insert rotating sleeve 24. During demolding, the insert rotating sleeve 24 is rotated to disengage from the rear mold insert 10.

[0053] When fixing the rear mold insert 10, the screws between the insert abutting screw plate 25 and the bottom template 23 are used to fix the bottom of the rear mold insert 10 to prevent the rear mold insert 10 from falling off. When demolding, the screws are removed and the rear mold insert 10 can be taken out from the front.

[0054] The specific embodiments described herein are merely illustrative examples of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention.

[0055] Although this document frequently uses terms such as upper mold for outer casing forming 1, lower mold for outer casing forming 2, injection part 3, front mold core 4, rear mold core 5, starting tooth positioning component 6, outer casing size limiting component 7, water-cooling and temperature-controlled template 8, product assembly and fixing module 9, rear mold insert 10, sealing molding slide 11, insert positioning component 12, positioning pin fixing block 13, positioning pin 14, slide cylinder 15, size height limiting molding seat 16, mold injection temperature control and cooling pipeline 17, injection main board 18, injection main cylinder 19, first assembly template of three-filter system device 20, second assembly template of three-filter system device 21, third assembly template of three-filter system device 22, bottom template 23, insert rotating tooth sleeve 24, insert abutment screw plate 25, etc., the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would contradict the spirit of the invention.

Claims

1. A mold for a filter housing of a three-filter system with a starting tooth positioning structure, comprising an upper mold (1) for housing forming and a lower mold (2) for housing forming, characterized in that, The upper mold (1) of the outer cover is provided with an injection molded part (3). The upper mold (1) of the outer cover and the lower mold (2) of the outer cover are provided with a front mold core (4) and a rear mold core (5). The front mold core (4) and the rear mold core (5) are provided with a starting tooth positioning component (6) and an outer cover size limiting component (7). The lower mold (2) of the outer cover is provided with a water-cooling and temperature-controlled template (8) and a product assembly and fixing module (9). The front mold core (4) and the rear mold core (5) are also provided with a rear mold insert (10). The rear mold insert (10) passes through the lower mold (2), the water-cooling and temperature-controlled template (8) and the product assembly and fixing module (9) in sequence. The starting tooth positioning component (6) and the outer cover size limiting component (7) are respectively positioned opposite to the rear mold insert (10). The starting tooth positioning component (6) includes a sealing molding slide (11) disposed between the front mold core (4) and the rear mold core (5). The sealing molding slide (11) is provided with an insert positioning component (12). The insert positioning component (12) abuts and cooperates with the rear mold insert (10). The sealing molding slide (11) abuts and cooperates with the outer cover size limiting component (7). The insert positioning component (12) includes a positioning pin fixing block (13) disposed on the sealing molding slide (11), and a positioning pin (14) is provided in the positioning pin fixing block (13), and the positioning pin (14) abuts and cooperates with the rear mold insert (10); The outer cover forming lower mold (2) is provided with a sliding cylinder (15), and the power shaft of the sliding cylinder (15) is connected to the sealed forming sliding block (11); The outer cover size limiting component (7) includes three size limiting molding seats (16) disposed between the front mold core (4) and the rear mold core (5). Two adjacent size limiting molding seats (16) abut against each other. The size limiting molding seats (16) correspond to the position of the rear mold insert (10). The sealing molding slide (11) abuts against the size limiting molding seats (16). The water-cooling template (8) is provided with a mold injection temperature control cooling pipe (17), and the mold injection temperature control cooling pipe (17) is interleaved with the rear mold insert (10).

2. The mold for the filter housing of a three-filter system with a starting tooth positioning structure according to claim 1, characterized in that, The injection molded part (3) includes an injection main plate (18) disposed above the outer cover molding upper mold (1), and an injection main cylinder (19) is provided inside the injection main plate (18). The injection main cylinder (19) is disposed opposite to the rear mold insert (10).

3. The mold for the filter housing of a three-filter system with a starting tooth positioning structure according to claim 2, characterized in that, The product assembly and fixing module (9) includes a first assembly template (20), a second assembly template (21), a third assembly template (22), and a bottom template (23) of the three-filter system device, which are set below the water temperature control template (8). The rear mold insert (10) passes through the first assembly template (20), the second assembly template (21), the third assembly template (22), and the bottom template (23) of the three-filter system device in sequence.

4. The mold for the filter housing of a three-filter system with a starting tooth positioning structure according to claim 3, characterized in that, The first assembly template (20) of the three-filter system device is provided with a rotating insert sleeve (24), which rotates and engages with the rear mold insert (10).

5. The mold for the filter housing of a three-filter system with a starting tooth positioning structure according to claim 4, characterized in that, The bottom template (23) is provided with an insert abutting screw plate (25), which abuts and cooperates with the rear mold insert (10). The insert abutting screw plate (25) and the bottom template (23) are fixed by screws.

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