High-precision hand pump filter seat injection mold structure

Abstract

The application relates to the field of injection mold for plastic parts of filters for vehicles, and discloses a high-precision injection mold structure for a filter seat with a hand pump, which comprises a rear mold fixing plate, the upper side of the rear mold fixing plate is connected with a ejector pin bottom plate, the upper side of the ejector pin bottom plate is connected with an ejector pin plate, the upper side of the rear mold fixing plate is connected with two supporting irons, the upper sides of the two supporting irons are jointly connected with a B plate, the upper side of the B plate is connected with an A plate, and the upper side of the A plate is connected with a front mold fixing plate. The secondary core-pulling of the mold is completed through the oil cylinder and the mold opening action, the positions of the large slide block and the small slide block are positioned and pressed through the self-spatula base characteristics of the A plate during the mold closing process, the precision matching of the formed parts is realized, and the problem of serious flash of products caused by the original structure is solved.

Description

Technical Field

[0001] This invention relates to the field of injection mold technology for automotive filter plastic parts, and in particular to a high-precision injection mold structure for a filter holder with a hand pump. Background Technology

[0002] The currently used injection molds for filter seats with hand pumps have the following technical defects during production: 1. During processing, the umbrella valve parting position is prone to flash, and the hand pump cover parting position even shows a large gap. This phenomenon affects the assembly accuracy and sealing of the product, and also requires manual cleaning of the flash, which seriously affects production efficiency; 2. The existing mold uses a hydraulic cylinder to position the hand pump assembly structure, but the drain hole is relatively small. It is inserted into the inclined surface of the filter seat mold core. Due to the instability of the hydraulic cylinder, the insert at the drain hole position is subjected to irregular force impact. With the increase of production cycles, the insert at the drain hole position is prone to breakage, affecting production efficiency and increasing expensive mold repair costs. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-precision injection mold structure for a filter holder with a hand pump.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A high-precision injection mold structure for a filter holder with a hand pump includes a rear mold fixing plate, with an ejector base plate connected to the upper side of the rear mold fixing plate, an ejector plate connected to the upper side of the ejector base plate, a plurality of support irons connected to the upper side of the rear mold fixing plate, a B plate connected to the upper side of the plurality of support irons, an A plate connected to the upper side of the B plate, and a front mold fixing plate connected to the upper side of the A plate. The high-precision injection mold structure for a filter holder with a hand pump also includes:

[0006] An inclined seat is connected to the side of plate B, and a positioning block is fixedly connected to the outer side of the inclined seat. An installation block is connected to the outer side of the inclined seat, and a hydraulic cylinder is installed on the surface of the installation block. A large slider is connected to one end of the hydraulic cylinder, and the large slider is also slidably connected to the outer side of the inclined seat.

[0007] A locking block is connected to the outside of the large slider. The outside of the large slider is connected to the inclined mold core, and the outside of the inclined mold core is connected to the clamping block. Umbrella-shaped valve hole inserts and oil drain hole inserts are respectively installed on the two sides of the outside of the inclined mold core.

[0008] An inclined guide post locking block is connected to the outside of plate A, and an inclined guide post is fixedly connected to the side of plate A. The inclined guide post is also set inside the inclined guide post locking block.

[0009] A small slider is slidably connected to the outside of a large slider, and a fixing block is fixedly connected to the outside of the small slider. An inward-shrinking shovel base is also connected to the outside of the small slider. A T-shaped groove is provided on the outside of the inward-shrinking shovel base, and an inward-shrinking slider is installed inside the T-shaped groove.

[0010] Preferably, an exhaust insert is fixedly connected to the middle position of the outer side of the inclined mold core.

[0011] Preferably, small pressure strips and limiting screws are installed on both sides inside the large slider.

[0012] Preferably, a large pressure strip is connected to the side of the inclined seat, and the large pressure strip is used to limit the movement trajectory of the large slider.

[0013] Preferably, the large slider has an internal mounting groove, and a spring is installed inside the mounting groove.

[0014] The present invention has the following beneficial effects:

[0015] 1. The present invention proposes a high-precision injection mold structure for a filter holder with a hand pump. Through the improvement and optimization of the secondary core-pulling structure, the mold risk is reduced and the processing and manufacturing difficulty of the core-pulling structure is simplified.

[0016] 2. The present invention proposes a high-precision injection mold structure with a hand pump filter seat. By using a hydraulic cylinder and mold opening action to complete the secondary core pulling of the mold, the position of the large slider and the small slider is positioned and pressed by the self-shovel base feature of the A plate during the mold closing process, thus realizing the precise fit of the molded parts and solving the problem of severe flash in the product caused by the original structure.

[0017] 3. The present invention proposes a high-precision injection mold structure with a hand pump filter seat, which reduces the risk of irregular stress on the oil drain hole insert and the rear mold core, improves the service life of the oil drain hole insert, reduces the number of mold repairs and costs, and effectively solves the problem of poor dimensional accuracy caused by poor venting by setting venting pins. Attached Figure Description

[0018] Figure 1 This is a cross-sectional view of the injection mold assembly proposed in this invention;

[0019] Figure 2 This is a schematic diagram of the front module structure proposed in this invention;

[0020] Figure 3 This is a schematic diagram of the rear module structure proposed in this invention;

[0021] Figure 4 This is a partial schematic diagram of the inclined core-pulling mechanism proposed in this invention;

[0022] Figure 5 This is a cross-sectional view of the inclined core-pulling mechanism proposed in this invention;

[0023] Figure 6 This is a partially enlarged view of the oblique core-pulling mechanism proposed in this invention;

[0024] Figure 7 This is a three-dimensional structural schematic diagram of the inward core-pulling mechanism proposed in this invention;

[0025] Figure 8 This is a partial structural diagram of the retractable shovel base and the retractable slider of the retractable core-pulling mechanism proposed in this invention.

[0026] Figure 9 This is a partial cross-sectional view of the inward core-pulling mechanism proposed in this invention.

[0027] In the diagram: 10. Front mold fixing plate; 11. Plate A; 12. Plate B; 13. Support iron; 14. Rear mold fixing plate; 15. Ejector plate; 16. Ejector base plate; 17. Umbrella-shaped valve hole insert; 18. Inward retraction shovel base; 19. Vent insert; 20. Angled guide post locking block; 21. Angled guide post; 22. Small slider; 23. Clamping block; 24. Fixing block; 25. Positioning block; 26. Angled sliding seat; 27. Mounting block; 28. Hydraulic cylinder; 29. ​​Small pressure bar; 30. Spring; 31. Large pressure bar; 32. Inward retraction slider; 33. Large slider; 34. Angled mold core; 35. Oil drain hole insert; 36. Locking block; 37. Limit screw; 100. Product; 101. Angled core pulling mechanism; 102. Inward retraction core pulling mechanism. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] Reference Figures 1 to 9 A high-precision injection mold structure for a filter holder with a hand pump includes a rear mold fixing plate 14, with an ejector base plate 16 connected to the upper side of the rear mold fixing plate 14, an ejector plate 15 connected to the upper side of the ejector base plate 16, a plurality of support irons 13 connected to the upper side of the rear mold fixing plate 14, a B plate 12 connected to the upper side of the plurality of support irons 13, an A plate 11 connected to the upper side of the B plate 12, and a front mold fixing plate 10 connected to the upper side of the A plate 11. The above technical features describe the overall framework of the mold, and the above technical features are all mature existing technologies. Those skilled in the art can make adjustments based on the above technical features. The high-precision injection mold structure for a filter holder with a hand pump also includes:

[0030] The inclined seat 26 is connected to the side of the B plate 12, and a positioning block 25 is fixedly connected to the outer side of the inclined seat 26. An installation block 27 is connected to the outer side of the inclined seat 26, and a hydraulic cylinder 28 is installed on the surface of the installation block 27. A large slider 33 is connected to one end of the hydraulic cylinder 28, and the large slider 33 is also slidably connected to the outer side of the inclined seat 26. A large pressure strip 31 is connected to the side of the inclined seat 26, and the large pressure strip 31 is used to limit the movement trajectory of the large slider 33. Small pressure strips 29 and limit screws 37 are respectively installed on both sides inside the large slider 33.

[0031] Locking block 36 is connected to the outside of large slider 33. The outside of large slider 33 is connected to inclined mold core 34, and the outside of inclined mold core 34 is connected to clamping block 23. Umbrella-shaped valve hole insert 17 and oil drain hole insert 35 are respectively installed on the two sides of the outside of inclined mold core 34. The inside of large slider 33 is provided with mounting groove, and spring 30 is installed inside the mounting groove.

[0032] The inclined guide post locking block 20 is connected to the outside of the A plate 11, and the inclined guide post 21 is fixedly connected to the side of the A plate 11. The inclined guide post 21 is also located inside the inclined guide post locking block 20.

[0033] The small slider 22 is slidably connected to the outside of the large slider 33, and a fixing block 24 is fixedly connected to the outside of the small slider 22. The small slider 22 is also connected to the outside of the inner shovel base 18. A T-shaped groove is provided on the outside of the inner shovel base 18, and the inner slider 32 is installed inside the T-shaped groove.

[0034] In the above embodiment, during the mold opening process, the inclined guide post 20 drives the small slider 22 to perform an inclined core-pulling motion. The small pressure strip 29 positions and guides the movement of the small slider 22. After the driving is completed, the small slider 22 is fixed in the mold-opening state by the spring 30 and the limiting screw 38. When the small slider 22 is driven to move, the inward shovel base 18 also moves accordingly. The inward shovel base 18 is connected to the inward slider 32 through the T-slot. Under the drive of the inward shovel base 18 and the cooperation of the umbrella-shaped valve hole insert 17 and the oil drain hole insert 35, the inward core-pulling motion is performed. In this way, the first undercut core-pulling action is completed through the mold opening action.

[0035] After the first core-pulling operation after mold opening, the internal core-pulling mechanism 102 remains on the rear mold through the cooperation of the small pressure strip 29 and the limiting screw 38 locked on the large slider 33. The large slider 33 is assembled and connected by the oil cylinder 28 and positioned and guided by the large pressure strip 31. Under the drive of the oil cylinder, it performs an inclined core-pulling movement. The inclined core-pulling movement of the large slider 33 mainly completes the undercut demolding of the inclined mold core 34, the umbrella-shaped valve hole insert 17 and the oil drain hole insert 35. At the same time, the small slider 22 is limited by the spring 30 and the limiting screw 38 to the large slider 33, and also performs an inclined core-pulling movement with the large slider. In this way, the second core-pulling action is completed by the drive of the oil cylinder 28.

[0036] like Figure 1 and Figure 5 As shown, in order to ensure mold closing accuracy and product dimensional accuracy, before mold closing, the inclined mold core 34, umbrella-shaped valve hole insert 17, and oil drain hole insert 35 on the large slider 33 are first reset by the hydraulic cylinder 28. When the mold closes, the inward shovel base 18 on the small slider 22 is reset by the front mold inclined guide post 21, thereby resetting the inward slider 32 connected by the T-slot on the inward shovel base 18. The shovel base feature of plate A is used to simultaneously fix and press the large slider 33 and the small slider 22, thereby improving the mold closing accuracy of the molded parts.

[0037] like Figure 1 As shown, the large slider 33 and the small slider 22 are simultaneously fixed and pressed by the shovel base feature of plate A 11. During the injection process of the injection molding machine, the pressing energy of plate A 11 can support the oil drain hole insert 35 to resist the oil drain hole insert 35 from retraction. This makes the force on the oil drain hole insert 35 and the rear mold core through the insertion contact more stable, thereby improving the service life of the oil drain hole insert 35, avoiding frequent mold replacement of the oil drain hole insert 35 in later production, and reducing the number of mold maintenance and costs.

[0038] In a preferred embodiment of the present invention, an exhaust pin 19 is fixedly connected to the middle position of the outer side of the inclined mold core 34. The exhaust pin 19 improves the dimensional accuracy of the limit guide post of the product hand pump assembly position and avoids the problem of poor exhaust.

[0039] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A high-precision hand pump filter seat injection mold structure, comprising a back mold fixed plate (14), and the upper side of the back mold fixed plate (14) is connected with a ejector pin bottom plate (16), the upper side of the ejector pin bottom plate (16) is connected with an ejector pin plate (15), the upper side of the back mold fixed plate (14) is connected with two support irons (13), the upper sides of the two support irons (13) are jointly connected with a B plate (12), the upper side of the B plate (12) is connected with an A plate (11), and the upper side of the A plate (11) is connected with a front mold fixed plate (10), characterized in that, The high-precision hand pump filter seat injection mold structure further comprises: The oblique guide pillar lock block (20) is connected to the outer side of the A plate (11), and the oblique guide pillar (21) is fixedly connected to the side surface of the A plate (11) and arranged in the oblique guide pillar lock block (20); The locking block (36) is connected to the outer side of the large sliding block (33), the oblique mold core (34) is connected to the outer side of the large sliding block (33), the outer side of the oblique mold core (34) is connected to the pressing block (23), and the umbrella-shaped valve hole insert (17) and the oil drain hole insert (35) are respectively arranged on the two sides of the outer side of the oblique mold core (34); The oblique guide pillar lock block (20) is connected to the outer side of the A plate (11), and the oblique guide pillar (21) is fixedly connected to the side surface of the A plate (11) and arranged in the oblique guide pillar lock block (20); The small sliding block (22) is slidably connected to the outer side of the large sliding block (33), the outer side of the small sliding block (22) is fixedly connected to the fixed block (24), and the outer side of the small sliding block (22) is further connected to the inner shrinkable spade base (18).

2. The high-precision filter seat injection mold structure with a hand pump according to claim 1, characterized in that, The oblique mold core (34) is fixedly connected to the middle position of the outer side.

3. The high-precision filter seat injection mold structure with a hand pump according to claim 2, characterized in that, The small pressing strip (29) and the limiting screw (37) are respectively arranged on the two sides of the inner side of the large sliding block (33).

4. The high-precision filter seat injection mold structure with a hand pump according to claim 3, characterized in that, The large pressing strip (31) is connected to the side surface of the oblique guide pillar (26), and the large pressing strip (31) is used for limiting the movement track of the large sliding block (33).

5. The high-precision filter seat injection mold structure with a hand pump according to claim 4, characterized in that, The spring (30) is arranged in the mounting groove in the inner side of the large sliding block (33). The oblique guide pillar lock block (20) is connected to the outer side of the A plate (11), and the oblique guide pillar (21) is fixedly connected to the side surface of the A plate (11) and arranged in the oblique guide pillar lock block (20);

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