Filter cartridge center tube injection mold structure

Abstract

This invention relates to the field of filter element center tube injection molding technology, and particularly to a filter element center tube injection mold structure, including a moving template base, with a support iron provided on the surface of the moving template base. Through a first telescopic cylinder, a slider fixing block, a first sliding seat, a hydraulic motor, a drive gear, an oil outlet threaded shaft, a driven gear, a toothed sleeve, a second telescopic cylinder, a limit block, and a cylinder connecting block, this invention enables the injection mold structure to withstand extremely high injection pressure in a stable state when the entire filter element center tube injection mold structure is closed, thereby improving the mold closing accuracy of the entire filter element center tube injection mold structure. Furthermore, by adding an automatic threading mechanism to the slider to achieve demolding of the thread at the oil outlet of the center tube product and improve its positional accuracy, the injection molding production efficiency of the center tube products can be greatly improved, thus enhancing the precision and applicability of this filter element center tube injection mold structure.

Description

Technical Field

[0001] This invention relates to the field of filter element center tube injection molding technology, specifically a filter element center tube injection mold structure. Background Technology

[0002] The filter element center tube is a crucial component of automotive filters, its primary function being to provide support for the filter element and facilitate the smooth flow of fluid through the filtration system. With the rapid development of the automotive industry, higher demands are placed on the quality and production efficiency of filter element center tubes. Traditional injection molds for filter element center tubes often face technical challenges during production, such as accuracy issues in the core-pulling process and the vulnerability of the molds, leading to low production efficiency and inconsistent product quality.

[0003] Currently, most filter element center tube injection molds on the market use simple mechanical core-pulling structures. These structures are prone to jamming and misalignment when pulling out the oil return hole insert, oil outlet threaded shaft, and oil outlet pin, making it impossible to guarantee high-precision operation for each core-pulling step. Furthermore, existing filter element center tube injection mold structures cannot withstand injection pressure stably during injection molding, resulting in lower precision when the mold closes. Summary of the Invention

[0004] The purpose of this invention is to provide a filter element center tube injection mold structure, which aims to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A filter element center tube injection mold structure includes a movable template base, and a support iron is provided on the surface of the movable template base. A movable template is connected to the outside of the support iron, and a fixed template is connected to the surface of the movable template. A fixed mold fixing plate is connected to the outside of the fixed template. A first hydraulic cylinder mounting seat is provided on one side of the movable template, and a first telescopic hydraulic cylinder is mounted on the surface of the first hydraulic cylinder mounting seat. A first guide groove is opened on the surface of the movable template, and a first sliding seat is slidably connected inside the first guide groove. A slider fixing block is connected to the side of the first sliding seat, and a second slider insert and an oil return hole insert are connected to the side of the slider fixing block. The oil return hole insert is placed inside the second slider insert.

[0007] The surface of the moving template is provided with an installation groove, and the interior of the installation groove is connected to the rear mold core;

[0008] The surface of the moving template is connected to a motor seat, and the side of the motor seat is provided with a slot, and a toothed sleeve is connected inside the slot. The internal thread of the toothed sleeve is connected to an oil outlet threaded shaft, and a driven gear is sleeved on the outside of the oil outlet threaded shaft. A hydraulic motor is installed on the side of the moving template, and a drive gear is fixedly installed on the output shaft of the hydraulic motor. A gear cover plate is fixedly connected to the side of the motor seat, and a transmission gear is rotatably connected to the side of the gear cover plate. The transmission gear meshes with both the drive gear and the driven gear. A first slider insert is connected to the side of the gear cover plate.

[0009] The moving template is provided with a second hydraulic cylinder mounting seat on the side away from the first hydraulic cylinder mounting seat, and a second telescopic hydraulic cylinder is mounted on the surface of the second hydraulic cylinder mounting seat. One end of the second telescopic hydraulic cylinder is connected to a hydraulic cylinder connecting block, and the hydraulic cylinder connecting block is fixedly connected to the motor seat. The hydraulic cylinder connecting block is provided with a limit block inside, and an oil outlet pin is fixedly connected to the side of the hydraulic cylinder connecting block through the limit block.

[0010] Furthermore, the first wear-resistant bushing and the second wear-resistant bushing are respectively installed inside the first slider insert and the motor seat, and the oil outlet threaded shaft is disposed inside the first wear-resistant bushing and the second wear-resistant bushing.

[0011] Furthermore, the driven gear has a positioning feature on the side near the first telescopic cylinder, and an inlet sensing switch is installed on the side of the driven gear near the first telescopic cylinder. A sensing ring is sleeved on the outer side of the oil outlet threaded shaft, and a sensing groove is formed on the surface of the sensing ring.

[0012] Furthermore, the outer sides of the oil return hole insert and the oil outlet threaded shaft are provided with corresponding positioning features that match each other.

[0013] Furthermore, the first sliding seat and the oil return hole insert are both provided with a cooling water channel, and the cooling water channel is made of beryllium copper.

[0014] The filter element center tube injection mold structure provided by this invention has the following beneficial effects:

[0015] Through the first telescopic cylinder, slider fixing block, first sliding seat, hydraulic motor, drive gear, oil outlet threaded shaft, driven gear, tooth sleeve, second telescopic cylinder, limit block and cylinder connecting block, the injection mold structure of the filter element center tube injection mold structure can withstand extremely high injection pressure in a stable state when the mold is closed, thereby improving the mold closing accuracy of the entire filter element center tube injection mold structure. Furthermore, by adding an automatic threading mechanism to the slider to achieve demolding of the thread at the oil outlet of the center tube product and improve its positional accuracy, the injection molding production efficiency of the center tube product can be greatly improved, thereby improving the precision and applicability of this filter element center tube injection mold structure. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the injection mold structure for the central tube of a filter element.

[0017] Figure 2 This is a schematic diagram of the back structure of an injection mold for a filter element center tube.

[0018] Figure 3 This is a schematic diagram of a filter element central tube injection mold structure in which the moving template is exposed.

[0019] Figure 4 This is a partial front sectional view of the moving template and its mounted components in an injection mold structure for a filter element center tube.

[0020] Figure 5 This is a three-dimensional structural diagram of a hydraulic motor and its various components in an injection mold structure for a filter element center tube.

[0021] Figure 6 This is a three-dimensional structural diagram of a first sliding seat, a slider fixing block, a second slider insert, and a driven gear in an injection mold structure for a filter element center tube.

[0022] Figure 7 This is a three-dimensional structural diagram of the cylinder connecting block, motor seat, gear cover plate, first slider insert, and oil outlet pin in the injection mold structure of a filter element center tube.

[0023] Figure 8 This is a partial front sectional view of the first sliding seat, the slider fixing block, the second slider insert, and the oil return hole insert in the injection mold structure of a filter element center tube.

[0024] Figure 9 This is a three-dimensional structural diagram of the oil return hole insert and cooling water channel in the injection mold structure of a filter element center tube.

[0025] In the diagram: 1. Fixed mold fixing plate; 2. First telescopic cylinder; 3. First cylinder mounting base; 4. Moving mold plate; 5. Moving mold plate base; 6. Second cylinder mounting base; 7. Second telescopic cylinder; 8. Support iron; 9. Fixed mold plate; 10. Hydraulic motor; 11. Support column; 12. First sliding seat; 13. Slider fixing block; 14. Center tube product; 15. First slider insert; 16. Gear cover plate; 17. Motor seat; 18. Cylinder connecting block; 19. Rear mold core; 20. Second slider insert; 21. Driven gear; 22. Gear sleeve; 23. Limiting block; 24. Oil outlet hole insert; 25. Oil outlet hole threaded shaft; 26. Transmission gear; 27. Drive gear; 28. Positioning feature; 29. ​​First wear-resistant bushing; 30. Second wear-resistant bushing; 31. Oil return hole insert; 32. Cooling water channel; 33. Induction ring; 34. Core inlet induction switch. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0027] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0028] like Figures 1-9 As shown, the present invention provides a filter element center tube injection mold structure, including a movable template base 5, and a support iron 8 is provided on the surface of the movable template base 5. A movable template 4 is connected to the outside of the support iron 8, and a fixed template 9 is connected to the surface of the movable template 4. A fixed mold fixing plate 1 is connected to the outside of the fixed template 9. Several support columns 11 are also fixedly connected to the outside of the movable template 4, the support iron 8 and the fixed template 9. The support columns 11 provide support for the entire mold structure. The above technical features are all mature existing technologies and are technical solutions that are easy for those skilled in the art to obtain or think of. Those skilled in the art can make corresponding adjustments and selections based on the above technical solutions.

[0029] A first hydraulic cylinder mounting seat 3 is provided on one side of the moving template 4, and a first telescopic hydraulic cylinder 2 is installed on the surface of the first hydraulic cylinder mounting seat 3. A first guide groove is opened on the surface of the moving template 4, and a first sliding seat 12 is slidably connected inside the first guide groove. A slider fixing block 13 is connected to the side of the first sliding seat 12, and a second slider insert 20 and an oil return hole insert 31 are connected to the side of the slider fixing block 13. The oil return hole insert 31 is placed inside the second slider insert 20.

[0030] The surface of the moving template 4 is provided with an installation groove, and the interior of the installation groove is connected to the rear mold core 19, and the center tube product 14 to be processed is placed in the rear mold core 19;

[0031] A motor seat 17 is connected to the surface of the moving template 4, and a slot is provided on the side of the motor seat 17. A toothed sleeve 22 is connected inside the slot. An oil outlet threaded shaft 25 is connected inside the toothed sleeve 22, and a driven gear 21 is sleeved on the outside of the oil outlet threaded shaft 25. A hydraulic motor 10 is installed on the side of the moving template 4, and a drive gear 27 is fixedly installed on the output shaft of the hydraulic motor 10. A gear cover plate 16 is fixedly connected to the side of the motor seat 17. A transmission gear 26 is rotatably connected to the side of the gear cover plate 16, and the transmission gear 26 is meshed with both the drive gear 27 and the driven gear 21. A first slider insert 15 is connected to the side of the gear cover plate 16.

[0032] A second hydraulic cylinder mounting seat 6 is provided on the side of the moving template 4 away from the first hydraulic cylinder mounting seat 3, and a second telescopic hydraulic cylinder 7 is installed on the surface of the second hydraulic cylinder mounting seat 6. One end of the second telescopic hydraulic cylinder 7 is connected to a hydraulic cylinder connecting block 18, and the hydraulic cylinder connecting block 18 is fixedly connected to the motor seat 17. A limit block 23 is provided inside the hydraulic cylinder connecting block 18, and an oil outlet pin 24 is fixedly connected to the side of the hydraulic cylinder connecting block 18 through the limit block 23.

[0033] In one embodiment of the present invention, after the injection molding of the central tube product 14 is completed, the first telescopic cylinder 2 on the first cylinder mounting seat 3 is first opened. The telescopic end of the first telescopic cylinder 2 drives the first sliding seat 12 to slide inside the first guide groove. The first sliding seat 12 drives the slider fixing block 13, the second slider insert 20 and the oil return hole insert 31 to move until the oil return hole insert 31 is pulled out from the inside of the central tube product 14 to complete the core pulling and demolding operation of the oil return hole insert 31.

[0034] Next, the hydraulic motor 10 is turned on. The output end of the hydraulic motor 10 drives the drive gear 27 to rotate. The drive gear 27 then drives the driven gear 21 to rotate through the transmission gear 26. The driven gear 21 then drives the oil outlet threaded shaft 25, which is fixedly connected to it, to rotate. Since the oil outlet threaded shaft 25 is threaded inside the tooth sleeve 22, the oil outlet threaded shaft 25 will also move away from the center tube product 14 until the oil outlet threaded shaft 25 is pulled out from inside the center tube product 14, so as to complete the core pulling and demolding operation of the oil outlet threaded shaft 25.

[0035] It is understandable that during the rotation and core-pulling process of the oil outlet threaded shaft 25, the core-pulling distance of the oil outlet threaded shaft 25 can be effectively and accurately controlled by setting the limit block 23 fixed inside the oil cylinder connecting block 18.

[0036] After the oil outlet threaded shaft 25 completes the rotation core-pulling demolding operation, the second telescopic cylinder 7 is opened. The telescopic end of the second telescopic cylinder 7 drives the cylinder connecting block 18 to move away from the central tube product 14. The cylinder connecting block 18 then drives the oil outlet insert 24 to move together until the oil outlet insert 24 is pulled out from the inside of the central tube product 14, so as to complete the core-pulling demolding operation of the oil outlet insert 24.

[0037] Through the above technical solution, during the mold closing process of the entire filter element central tube injection mold structure, the injection mold structure can withstand extremely high injection pressure in a stable state, thereby improving the mold closing accuracy of the entire filter element central tube injection mold structure. Furthermore, by adding an automatic threading mechanism to the slider to achieve demolding of the thread at the oil outlet of the central tube product 14, the injection molding production efficiency of the central tube product can be greatly improved, thereby enhancing the precision and applicability of this filter element central tube injection mold structure.

[0038] Preferably, a first wear-resistant bushing 29 and a second wear-resistant bushing 30 are respectively installed inside the first slider insert 15 and the motor seat 17, and the oil outlet threaded shaft 25 is disposed through the inside of the first wear-resistant bushing 29 and the second wear-resistant bushing 30. By setting the first wear-resistant bushing 29 and the second wear-resistant bushing 30, not only can the friction between the oil outlet threaded shaft 25 and other structures be reduced to reduce the wear of the oil outlet threaded shaft 25, but the reset accuracy of the oil outlet threaded shaft 25 can also be improved.

[0039] Preferably, a positioning feature 28 is provided on the side of the driven gear 21 near the first telescopic cylinder 2, and an inlet sensing switch 34 is installed on the side of the driven gear 21 near the first telescopic cylinder 2. A sensing ring is sleeved on the outer side of the oil outlet threaded shaft 25, and a sensing groove is provided on the surface of the sensing ring. By setting the positioning feature 28 and the dual positioning measures of the inlet sensing switch 34 and the sensing ring, the accuracy of the oil outlet threaded shaft 25 in the rotation reset process can be greatly improved.

[0040] Preferably, the outer sides of the oil return hole insert 31 and the oil outlet threaded shaft 25 are provided with corresponding positioning features that match each other. Through the design of such corresponding positioning features, the structural strength of the oil return hole insert 31 can be improved during the injection molding process, so that it will not be deformed or broken by the impact of large injection pressure, thereby improving the service life of the mold.

[0041] Preferably, the first sliding seat 12 and the oil return hole insert 31 are provided with a cooling water channel 32, and the material of the cooling water channel 32 is beryllium copper. Since the two oil return hole inserts 31 are very long and thin, it is impossible to design a cooling water channel during the mold design process. By selecting beryllium copper as the material of the oil return hole insert 31, and then designing a water spray pipe cooling structure in the embedded part at the large end of the oil return hole, the high temperature of the product in the location where heat is easy to accumulate is dissipated by the high conductivity of beryllium copper, thereby effectively reducing the dimensional deformation of the central tube product caused by uneven temperature.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A filter element center tube injection mold structure, comprising a movable template base (5), wherein a support iron (8) is provided on the surface of the movable template base (5), a movable template (4) is connected to the outer side of the support iron (8), and a fixed template (9) is connected to the surface of the movable template (4), wherein a fixed mold fixing plate (1) is connected to the outer side of the fixed template (9), characterized in that, A first hydraulic cylinder mounting seat (3) is provided on one side of the moving template (4), and a first telescopic hydraulic cylinder (2) is installed on the surface of the first hydraulic cylinder mounting seat (3). A first guide groove is opened on the surface of the moving template (4), and a first sliding seat (12) is slidably connected inside the first guide groove. A slider fixing block (13) is connected to the side of the first sliding seat (12), and a second slider insert (20) and an oil return hole insert (31) are connected to the side of the slider fixing block (13). The oil return hole insert (31) is placed inside the second slider insert (20). The surface of the moving template (4) is provided with an installation groove, and the interior of the installation groove is connected to the rear mold core (19); The surface of the moving template (4) is connected to a motor seat (17), and the side of the motor seat (17) is provided with a slot, and the inside of the slot is connected to a toothed sleeve (22). The inside of the toothed sleeve (22) is connected to an oil outlet threaded shaft (25), and the outside of the oil outlet threaded shaft (25) is sleeved with a driven gear (21). The side of the moving template (4) is equipped with a hydraulic motor (10), and the output shaft of the hydraulic motor (10) is fixedly installed with a drive gear (27). The side of the motor seat (17) is fixedly connected to a gear cover plate (16), and the side of the gear cover plate (16) is rotatably connected to a transmission gear (26). The transmission gear (26) is meshed with both the drive gear (27) and the driven gear (21). The side of the gear cover plate (16) is connected to a first slider insert (15). The moving template (4) is provided with a second cylinder mounting seat (6) on the side away from the first cylinder mounting seat (3), and a second telescopic cylinder (7) is mounted on the surface of the second cylinder mounting seat (6). One end of the second telescopic cylinder (7) is connected to a cylinder connecting block (18), and the cylinder connecting block (18) is fixedly connected to the motor seat (17). The cylinder connecting block (18) is provided with a limit block (23) inside, and an oil outlet pin (24) is fixedly connected to the side of the cylinder connecting block (18) through the limit block (23).

2. The injection mold structure for a filter element center tube according to claim 1, characterized in that, The first wear-resistant bushing (29) and the second wear-resistant bushing (30) are respectively installed inside the first slider insert (15) and the motor seat (17), and the oil outlet threaded shaft (25) is disposed inside the first wear-resistant bushing (29) and the second wear-resistant bushing (30).

3. The injection mold structure for a filter element center tube according to claim 1, characterized in that, The driven gear (21) has a positioning feature (28) on the side near the first telescopic cylinder (2), and an inlet induction switch (34) is installed on the side of the driven gear (21) near the first telescopic cylinder (2). An induction ring is sleeved on the outside of the oil outlet threaded shaft (25), and an induction groove is opened on the surface of the induction ring.

4. The injection mold structure for a filter element center tube according to claim 1, characterized in that, The outer sides of the oil return hole insert (31) and the oil outlet threaded shaft (25) are provided with corresponding positioning features that match each other.

5. The injection mold structure for a filter element center tube according to claim 1, characterized in that, The first sliding seat (12) and the oil return hole insert (31) are provided with a cooling water channel (32), and the material of the cooling water channel (32) is beryllium copper.

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