Dust collector shell mold with mold core convenient to replace

Abstract

The utility model discloses a dust collector shell mold with a mold core convenient to replace. The dust collector shell mold comprises an upper mold base and a lower mold base, a mounting groove is formed in the top of the lower die base and provided with an ejector pin structure; the mold core is vertically inserted into the mounting groove, and the ejector pin structure penetrates through the mold core; the positioning structure comprises a rack located on the side face of the mold core, a gear, a clamping block used for clamping and positioning the gear and an inserting piece used for limiting the clamping block, the clamping block extends into the mounting groove and abuts against the side face of the mold core, and the clamping block is slidably connected into the lower mold base. According to the utility model, the gear and the rack are meshed and butted to guide the disassembly and assembly of the mold core, the insert is assembled and positioned when the mold core is assembled, the fixture block is stably guided, and the fixture block is propped against the mold core and is clamped with the gear, so that the multi-point supporting and positioning of the mold core are realized; and when the mold core is disassembled, the insert is positioned and released, so that the positioning structure and the mold core can be positioned and released, and the mold core is taken out for replacement, so that the mold core is more convenient to replace and stable in positioning.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a vacuum cleaner shell mold with a mold core which is easy to replace. Background Art

[0002] As the key precision part in the center of the mold, the mold core plays a vital role in the quality of injection molding. When the mold core is damaged, it needs to be replaced. However, some molds use a structure where the mold base and the mold core are fixed, which makes the mold core replacement cost high; some molds have detachable molds, and the mold core replacement operation is complicated and difficult. The positioning structure is set on the injection molding surface of the mold core, which makes it inconvenient to join the mold core and the mold base, and also affects the structure of the injection molded part and the injection molding effect. For example, Chinese patent authorization announcement No. CN217752526U discloses a vacuum cleaner top cover mold, including a top plate, a gate sleeve, a positioning ring, an injection molding upper mold, an injection molding lower mold, a support plate, a bottom plate, and an ejector pin structure. The injection molding upper mold and the injection molding lower mold fit together to form a mold cavity for the injection molding vacuum cleaner top cover. The top of the injection molding lower mold is provided with a connecting inner groove, and a spliced ​​lower mold core is connected to the connecting inner groove. The spliced ​​lower mold core includes a wear mold core protrusion, a positioning connecting plate, a positioning wire, a slide groove, an arc-shaped pressing spring plate, a pressing spring, and a load-bearing mold core protrusion, which has the above-mentioned technical problems. Utility Model Content

[0003] The purpose of the utility model is to provide a vacuum cleaner housing mold with a mold core that is easy to replace in order to solve the problem that some molds adopt a structure in which the mold base and the mold core are fixed, which makes the mold core replacement cost high, and some molds with detachable mold cores make the mold core replacement operation complicated and difficult. A positioning structure is set on the injection molding surface of the mold core, which makes it inconvenient to align the mold core and the mold base, and also affects the structure of the injection molded part and the injection molding effect.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a vacuum cleaner housing mold with a mold core that is easy to replace, comprising:

[0005] An upper mold base is provided with an upper mold cavity and an injection port connected to the upper mold cavity;

[0006] The lower die base has a mounting groove on the top, and the mounting groove is driven to lift and lower to set an ejector plate with an ejector structure;

[0007] A mold core is vertically inserted in the mounting groove, the mold core and the mounting groove form a lower mold cavity matching the upper mold cavity, and the ejector structure passes through the mold core;

[0008] The positioning structure includes a rack located on the side of the mold core, a gear meshing with the rack, a block used for positioning the gear, and a plug-in for limiting the block. The gear is hinged on the side of the mounting groove, the block extends into the mounting groove and abuts against the side of the mold core, and the block is slidably connected in the lower mold base.

[0009] As a further description of the above technical solution:

[0010] The ejector pin structure includes a first ejector pin and a second ejector pin inserted into the through hole of the mold core, the first ejector pin is used for ejecting and demolding the bottom surface of the central protrusion of the stepped vacuum cleaner injection-molded shell, and the second ejector pin is used for ejecting and demolding the bottom surface of the edge of the stepped vacuum cleaner injection-molded shell, and the length of the first ejector pin is greater than the length of the second ejector pin.

[0011] As a further description of the above technical solution:

[0012] The rack is vertically arranged at the notch of the bottom edge of the mold core.

[0013] As a further description of the above technical solution:

[0014] The gear rotation axis is arranged horizontally and connected to a connecting shaft of a circular cross-section groove extending from a side of the mounting groove.

[0015] As a further description of the above technical solution:

[0016] The plug-in is inserted into the installation opening extending laterally from the installation groove, and a special-shaped isolation block is arranged between the installation opening, the circular cross-section groove and the installation groove. A slide groove is formed between the special-shaped isolation block and the plug-in, and the card block is slidably connected in the slide groove, and the slide groove is connected with the circular cross-section groove and the installation groove.

[0017] As a further description of the above technical solution:

[0018] The clamping block is an arc-shaped clamping block with a concave surface facing the gear.

[0019] As a further description of the above technical solution:

[0020] The lower die seat is provided with a knob on the outer side of the plug-in for abutting and positioning the plug-in, the knob is hinged on the rotating shaft, and a gripping block is provided on the outer side of the plug-in.

[0021] In summary, due to the adoption of the above technical solution, the utility model has the following advantages compared with the prior art:

[0022] Beneficial effects:

[0023] The mold is connected by gear rack meshing to guide the mold core to be disassembled and assembled. When the mold core is installed, the plug-in is assembled and positioned to provide stable guidance for the clamping block. The clamping block and the mold core are connected and the gears are engaged to achieve multi-point support positioning of the mold core. When the mold core is disassembled, the positioning of the plug-in is released to achieve the positioning release of the positioning structure and the mold core, and it can be taken out for replacement, making mold core replacement more convenient. Compared with the common mold core detachable positioning structure, this mold positions the mold core on the side and does not set a structure on the injection molding top surface of the mold core, making it simpler and more convenient for the mold core and the mold base to be joined, and the positioning structure will not affect the structure of the injection molded part and the injection molding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 The present invention is a partial cross-sectional view of a main view of a vacuum cleaner housing mold with a mold core that is easy to replace.

[0026] Figure 2 for Figure 1 Enlarged view of point A in the middle.

[0027] Figure 3 for Figure 1 Enlarged view of point B in the middle.

[0028] Figure 4 The present invention is a structural disassembly diagram of a lower mold base and a mold core in a vacuum cleaner housing mold with an easily replaceable mold core.

[0029] Legend:

[0030] 1. Upper die base; 2. Lower die base; 21. Mounting groove; 22. Circular section groove; 23. Mounting opening; 24. Special-shaped isolation block; 25. Slide groove; 26. Knob; 27. Rotating shaft; 3. Mold core; 31. Through hole; 32. Notch; 4. Ejector plate; 41. First ejector; 42. Second ejector; 5. Rack; 6. Gear; 7. Block; 8. Plug-in; 81. Holding block. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0032] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0033] See also Figure 1-4 The utility model provides a technical solution: a vacuum cleaner housing mold with a mold core that is easy to replace, comprising:

[0034] An upper mold base 1 is provided with an upper mold cavity and an injection port 11 connected to the upper mold cavity;

[0035] The lower die base 2 has a mounting groove 21 on the top, and the mounting groove 21 is driven to lift and lower to set an ejector plate 4 with an ejector structure;

[0036] The mold core 3 is vertically inserted in the mounting groove 21. The mold core 3 and the mounting groove 21 form a lower mold cavity matching the upper mold cavity. The ejector structure passes through the mold core 3.

[0037] The positioning structure includes a rack 5 located on the side of the mold core 3, a gear 6 meshing with the rack 5, a block 7 used for clamping and positioning the gear 6, and a plug-in 8 for limiting the block 7. The gear 6 is hinged on the side of the installation groove 21, the block 7 extends into the installation groove 21 and abuts against the side of the mold core 3, and the block 7 is slidably connected in the lower mold base 2.

[0038] The mold core in this mold adopts a detachable design, which is convenient for disassembly and replacement of the mold core when the quality of subsequent mold core injection molding is poor. Compared with the fixed design of the mold base and mold core, it can reduce the cost of mold maintenance and replacement.

[0039] The ejector pin structure includes a first ejector pin 41 and a second ejector pin 42 inserted into the through hole 31 of the mold core 3. The first ejector pin 41 is used for ejecting and demolding the bottom surface of the central protrusion of the stepped vacuum cleaner injection-molded shell, and the second ejector pin 42 is used for ejecting and demolding the bottom surface of the edge of the stepped vacuum cleaner injection-molded shell. The length of the first ejector pin 41 is greater than that of the second ejector pin 42. In view of the common stepped vacuum cleaner shell structure formed based on practical design and use concepts such as aesthetics, internal space expansion, and structural strength improvement, the ejector pin structure in this mold adopts a layered ejection structure that better matches it, and performs better abutment support and ejection operations on the center and edge of the shell, avoiding quality problems such as deformation at the bend of the injection-molded finished structure.

[0040] The rack 5 is vertically arranged at the notch 32 at the bottom edge of the mold core 3. When the rack 5 is meshed and guided, the gear 6 rotates in the notch 32, so that the tight connection design between the mold core 3 and the side of the mounting groove 21 is more sufficient, thereby improving the stability and convenience of the assembly and disassembly operations of the mold core 3 and the stability of the mold core 3 during injection molding.

[0041] The connecting structure of the gear 6 is further deepened, and the rotating axis of the gear 6 is arranged horizontally and connected to the connecting shaft of the circular cross-section groove 22 extending from the side of the installation groove 21.

[0042] The plug-in 8 is inserted into the installation opening 23 extending laterally from the installation groove 21, and a special-shaped isolation block 24 is arranged between the installation opening 23, the circular cross-section groove 22 and the installation groove 21. A slide groove 25 is formed between the special-shaped isolation block 24 and the plug-in 8, and the block 7 is slidably connected in the slide groove 25, and the slide groove 25 is connected with the circular cross-section groove 22 and the installation groove 21. In this embodiment, the block 7 is an arc-shaped block with a concave surface facing the gear 6. This design enables the sliding track of the block 7 to better reduce the interference with the rotation of the gear 6 when the mold core 3 is installed, and after the mold core 3 is installed in place, the gear 6 is clamped and positioned by abutting the mold core 3, thereby realizing the positioning of the mold core.

[0043] The lower die base 2 is provided with a knob 26 on the outer side of the plug-in 8 for abutting and positioning the plug-in 8 . The knob 26 is hinged on the rotating shaft 27 . A gripping block 81 is provided on the outer side of the plug-in 8 .

[0044] The working principle of the vacuum cleaner shell mold with a mold core that is easy to replace in this embodiment includes: when the mold core 3 is installed, the block 7 is first pressed into the installation port 23 through the plug-in 8, and the plug-in 8 is fixed by the knob 26, and the block 7 can slide in the formed slide groove 25, and the mold core 3 is pressed into the installation groove 21. When the notch 32 moves to the circular cross-section groove 22, the rack 5 and the gear 6 are docked and guided, and the block 7 slides smoothly in the slide groove 25 when the gear 6 rotates; when the side surface of the mold core 3 abuts against the upper end of the block 7, the block 7 is pressed into the slide groove 25, so that the lower end of the block 7 is clamped and fixed with the gear 6, thereby realizing the fixation of the positioning structure and the mold core 3, and the injection molding process can be carried out. When disassembling the mold core, first release the positioning of the plug-in 8 by the knob 26, hold the gripping block 81, and pull out the plug-in 8, so that the lateral abutment of the block 7 is released, and the block 7 can move again, so that the abutment and positioning state of the block 7 and the mold core 3 is released, and the mold core 3 moves upward, and the block 7 moves freely in the installation port 23, so that the gear 6 can be rotated and guided until the mold core 3 is taken out, and the mold core 3 can be replaced.

[0045] In summary, due to the adoption of the above technical solution, the vacuum cleaner housing mold with a mold core that is easy to replace in this embodiment has the following beneficial effects compared with the prior art:

[0046] The mold is connected by gear rack meshing to guide the mold core to be disassembled and assembled. When the mold core is installed, the plug-in is assembled and positioned to provide stable guidance for the clamping block. The clamping block and the mold core are connected and the gears are engaged to achieve multi-point support positioning of the mold core. When the mold core is disassembled, the positioning of the plug-in is released to achieve the positioning release of the positioning structure and the mold core, and it can be taken out for replacement, making mold core replacement more convenient. Compared with the common mold core detachable positioning structure, this mold positions the mold core on the side and does not set a structure on the injection molding top surface of the mold core, making it simpler and more convenient for the mold core and the mold base to be joined, and the positioning structure will not affect the structure of the injection molded part and the injection molding effect.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A vacuum cleaner housing mold with a mold core that is easy to replace, characterized in that: include: An upper mold base is provided with an upper mold cavity and an injection port connected to the upper mold cavity; The lower die base has a mounting groove on the top, and the mounting groove is driven to lift and lower to set an ejector plate with an ejector structure; A mold core is vertically inserted in the mounting groove, the mold core and the mounting groove form a lower mold cavity matching the upper mold cavity, and the ejector structure passes through the mold core; The positioning structure includes a rack located on the side of the mold core, a gear meshing with the rack, a block used for positioning the gear, and a plug-in for limiting the block. The gear is hinged on the side of the mounting groove, the block extends into the mounting groove and abuts against the side of the mold core, and the block is slidably connected in the lower mold base.

2. A vacuum cleaner housing mold with a mold core that is easy to replace according to claim 1, characterized in that: The ejector pin structure includes a first ejector pin and a second ejector pin inserted into the through hole of the mold core, the first ejector pin is used for ejecting and demolding the bottom surface of the central protrusion of the stepped vacuum cleaner injection-molded shell, and the second ejector pin is used for ejecting and demolding the bottom surface of the edge of the stepped vacuum cleaner injection-molded shell, and the length of the first ejector pin is greater than the length of the second ejector pin.

3. The vacuum cleaner housing mold with a mold core that is easy to replace according to claim 1, characterized in that: The rack is vertically arranged at the notch of the bottom edge of the mold core.

4. The vacuum cleaner housing mold with a mold core that is easy to replace according to claim 1, characterized in that: The gear rotation axis is arranged horizontally and connected to a connecting shaft of a circular cross-section groove extending from a side of the mounting groove.

5. The vacuum cleaner housing mold with a mold core that is easy to replace according to claim 4, characterized in that: The plug-in is inserted into the installation opening extending laterally from the installation groove, and a special-shaped isolation block is arranged between the installation opening, the circular cross-section groove and the installation groove. A slide groove is formed between the special-shaped isolation block and the plug-in, and the card block is slidably connected in the slide groove, and the slide groove is connected with the circular cross-section groove and the installation groove.

6. The vacuum cleaner housing mold with a mold core that is easy to replace according to claim 1, characterized in that: The clamping block is an arc-shaped clamping block with a concave surface facing the gear.

7. The vacuum cleaner housing mold with a mold core that is easy to replace according to claim 1, characterized in that: The lower die seat is provided with a knob on the outer side of the plug-in for abutting and positioning the plug-in, the knob is hinged on the rotating shaft, and a gripping block is provided on the outer side of the plug-in.

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