Plastic half-sphere injection mold

Abstract

The utility model relates to the field of injection mold, concretely is a kind of plastic half-sphere injection mold, including lower die holder and upper die holder, lower die holder includes base and lower die carrier, two cushion blocks are fixedly connected on base, and the bottom end of lower die carrier is installed on cushion block, lower die carrier is provided with lower model, fixed seat is fixedly connected on base, insert is installed on fixed seat, and the top end of insert is inserted in lower model, complete forming cavity is formed by the cooperation of lower model, insert and core rod, wherein core rod can extend into pouring cavity and abut against lower model, required gap is formed directly on half-sphere shell in the injection molding process, without like prior art as after injection molding Secondary processing is carried out, and the shape and quantity of insert can be flexibly adjusted according to half-sphere shell model, can adapt to the forming needs of different structures such as wire slot and clamping groove, directly produce the product satisfying subsequent assembly requirement, simplify processing flow, improve subsequent assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a plastic hemispherical injection mold. Background Technology

[0002] The dome housing is an important component of a dome camera. It is dustproof, waterproof, and prevents dust and moisture from entering the camera. It avoids the impact of dust accumulation or moisture on the performance and lifespan of components such as the camera and lens. It also prevents the camera from being damaged by external forces such as collisions, impacts, and friction. The plastic dome housing is formed by heating and melting the plastic material, injecting it into a mold cavity, and then cooling and solidifying it to form the desired dome housing shape.

[0003] Chinese patent CN219883172U discloses an injection mold for the housing of a surveillance camera. It uses an insert support to support the insert. When the insert needs to be replaced or maintained, the insert installed on the lower mold core can be removed simply by removing the insert support, without disassembling the entire mold. This facilitates the replacement of the insert and reduces the labor intensity of workers.

[0004] Although the above solution facilitates the disassembly of the insert by designing a detachable inlay support, the camera housing needs to be designed with multiple wire grooves, card slots and other structures. The camera housing cast by the insert alone still needs to be processed again before it can be put into the subsequent assembly process, which is inconvenient for subsequent assembly and processing.

[0005] Therefore, this utility model provides a plastic hemispherical injection mold to solve the above problems. Utility Model Content

[0006] In view of the above situation and to overcome the defects of the prior art, this utility model provides a plastic hemispherical injection mold to solve the problem that the camera shell needs to be designed with multiple grooves, slots and other structures, and the camera shell cast by inserts alone still needs to be processed in the subsequent assembly process, which is inconvenient for subsequent assembly.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] A plastic hemispherical injection mold includes a lower mold base and an upper mold base. The lower mold base includes a base and a lower mold frame. Two pads are fixedly connected to the base, and the bottom end of the lower mold frame is installed on the pads. A lower mold is provided on the lower mold frame. A fixing seat is fixedly connected to the base, and an insert is installed on the fixing seat. The top end of the insert is inserted into the lower mold.

[0009] The upper mold base includes a linkage plate, a connecting plate, and an upper mold frame. Both the linkage plate and the connecting plate are provided with a sprue. The upper mold frame is provided with a runner and a sprue cavity, and the runner is connected to the sprue cavity and the sprue. The upper mold frame is also provided with a sliding groove and a through groove, and the sliding groove is connected to the sprue cavity through the through groove. A slider is slidably connected in the sliding groove, and a core rod is fixedly connected to the slider. The linkage plate is provided with a plug-in assembly that drives the slider to move to insert the core rod through the through groove into the sprue cavity. The lower mold is located in the sprue cavity and forms a molding cavity through the insert and the core rod.

[0010] Preferably, a sliding seat is installed in the sliding groove, and the slider is slidably connected to the sliding seat.

[0011] Preferably, the plug-in assembly includes a mounting groove on the linkage plate, a pressing rod is installed in the mounting groove by bolts, the bottom end of the pressing rod has a first inclined surface and a second inclined surface, and the bottom end of the pressing rod forms an inclined rod through the first inclined surface and the second inclined surface, and the slider has a pressing groove that matches the inclined rod.

[0012] Preferably, the connecting plate has a second guide groove, the upper mold frame has a first guide groove, and the first guide groove is connected to the sliding groove, and the second guide groove matches the first guide groove.

[0013] Preferably, the sliding groove has a positioning cavity, the sliding seat has a positioning block installed, and the positioning block is inserted into the positioning cavity. The positioning block has a slot, and the slot matches the extrusion rod.

[0014] Preferably, the linkage plate is equipped with a guide pin, and the connecting plate is provided with a guide hole that matches the guide pin.

[0015] The beneficial effects of this utility model are as follows:

[0016] 1. A complete molding cavity is formed by the cooperation of the lower mold, inserts and core rod. The core rod can extend into the casting cavity and abut against the lower mold. During the injection molding process, the required notch is directly formed on the hemispherical shell. Unlike existing technologies, there is no need for secondary processing after injection molding. Furthermore, the shape and number of inserts can be flexibly adjusted according to the hemispherical shell model, which can adapt to the molding requirements of different structures such as grooves and slots. Products that meet the requirements of subsequent assembly can be directly produced, simplifying the processing flow and improving the efficiency of subsequent assembly.

[0017] 2. By detachably installing the extrusion rod into the mounting slot of the linkage plate using bolts, it is convenient to maintain or replace the extrusion rod later. Its bottom end cooperates with the extrusion groove of the slider through the first inclined surface and the second inclined surface. During the lifting and lowering of the linkage plate, it can stably drive the slider and the core rod to realize the insertion or core pulling action. The positioning and disengagement of the core rod can be completed without complicated operation. Furthermore, the guide pin and guide hole, the first guide groove and the second guide groove in the upper mold base ensure the precise cooperation of the linkage plate, the connecting plate and the upper mold base, reduce the operation deviation, reduce the labor intensity of workers, and improve the convenience of mold operation.

[0018] 3. Passed. Attached Figure Description

[0019] Figure 1 The three-dimensional representation of this utility model Figure 1 .

[0020] Figure 2 This is a schematic diagram of the structure of the lower mold base of this utility model.

[0021] Figure 3 For the explosion of this utility model Figure 1 .

[0022] Figure 4 This is an exploded view of the cross-sectional view of the upper mold base of this utility model.

[0023] Figure 5 For the explosion of this utility model Figure 2 .

[0024] In the diagram: 1. Base; 2. Pad; 3. Fixing seat; 4. Lower mold frame; 5. Lower mold; 6. Sliding seat; 7. Slider; 8. Positioning block; 9. Slot; 10. Extrusion groove; 11. Core rod; 12. Linkage plate; 13. Connecting plate; 14. Sprue; 15. Upper mold frame; 16. Sliding groove; 17. Through groove; 18. First guide groove; 19. Second guide groove; 20. Mounting groove; 21. Extrusion rod; 22. Runner; 23. First inclined surface; 24. Second inclined surface; 25. Positioning cavity; 26. Sprue cavity; 27. Insert. Detailed Implementation

[0025] The following will refer to the attached reference. Figures 1 to 5 The various embodiments of this utility model will be described in detail below. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of this utility model and are not intended to limit the scope of protection of this utility model.

[0026] A plastic hemispherical injection mold includes a lower mold base and an upper mold base. The lower mold base includes a base 1 and a lower mold frame 4. Two pads 2 are fixedly connected to the base 1, and the bottom end of the lower mold frame 4 is installed on the pads 2. A lower mold 5 is provided on the lower mold frame 4. A fixing seat 3 is fixedly connected to the base 1, and an insert 27 is installed on the fixing seat 3. The top end of the insert 27 is inserted into the lower mold 5.

[0027] The lower mold frame 4 is supported by the pad block 2, so that there is enough space between the lower mold frame 4 and the base 1, and the fixing seat 3 is installed in the space. The middle part of the lower mold frame 4 is hollow, and the lower model 5 is located in the space. The insert 27 inserted into the space can position the lower model 5. Moreover, the shape and number of inserts 27 can be adjusted according to the model of the hemispherical shell produced.

[0028] In this embodiment, the upper mold base includes a linkage plate 12, a connecting plate 13, and an upper mold frame 15. Both the linkage plate 12 and the connecting plate 13 are provided with pouring ports 14. A guide pin is installed on the linkage plate 12, and a guide hole matching the guide pin is provided on the connecting plate 13.

[0029] In the longitudinal direction, from top to bottom are the linkage plate 12, the connecting plate 13 and the upper mold frame 15. When the linkage plate 12 is installed on the connecting plate 13, the guide pin will be inserted into the guide hole to prevent the linkage plate 12 from being misaligned on the connecting plate 13. The pouring port 14 is the pouring position.

[0030] The upper mold frame 15 is provided with a runner 22 and a pouring cavity 26. The runner 22 is connected to the pouring cavity 26 and the pouring port 14, which can divert the plastic liquid through the pouring port 14 and the runner 22 into the pouring cavity 26 and form the plastic liquid in the pouring cavity 26.

[0031] The upper mold frame 15 is also provided with a sliding groove 16 and a through groove 17. The sliding groove 16 is connected to the casting cavity 26 through the through groove 17. A slider 7 is slidably connected in the sliding groove 16. A sliding seat 6 is installed in the sliding groove 16. The slider 7 is slidably connected to the sliding seat 6. A core rod 11 is fixedly connected to the slider 7.

[0032] Since the sliding groove 16, the through groove 17 and the casting cavity 26 are connected, the core rod 11 can be inserted into the casting cavity 26 through the through groove 17 and abutted against the lower mold 5. When the injection molded part is formed on the lower mold 5, the core rod 11 can form a notch on the injection molded part.

[0033] The linkage plate 12 is equipped with a drive slider 7 to move and insert the core rod 11 through the through groove 17 into the casting cavity 26. The lower model 5 is located in the casting cavity 26 and forms a molding cavity through the insert 27 and the core rod 11.

[0034] In this embodiment, the plug-in assembly includes a mounting groove 20 formed on the linkage plate 12. A pressing rod 21 is installed in the mounting groove 20 by bolts. The bottom end of the pressing rod 21 is provided with a first inclined surface 23 and a second inclined surface 24, and the bottom end of the pressing rod 21 forms an inclined rod through the first inclined surface 23 and the second inclined surface 24. A pressing groove 10 matching the inclined rod is provided in the slider 7.

[0035] The extrusion rod 21 is fixed to the linkage plate 12 in a detachable manner, which facilitates the later maintenance of the extrusion rod 21. After the bottom end of the extrusion rod 21 is inserted into the extrusion groove 10, the slider 7 will move in the sliding seat 6 under the action of the first inclined surface 23 and the second inclined surface 24, and the core rod 11 on the slider 7 will abut against the lower model 5. When the linkage plate 12 moves upward, the core rod 11 will disengage from the lower model 5, completing the core pulling action.

[0036] The connecting plate 13 is provided with a second guide groove 19, and the upper mold frame 15 is provided with a first guide groove 18. The first guide groove 18 is connected to the sliding groove 16. The second guide groove 19 matches the first guide groove 18. When the mounting groove 20 moves up and down, the middle part of the mounting groove 20 will slide in the first guide groove 18 and the second guide groove 19.

[0037] The sliding groove 16 has a positioning cavity 25, the sliding seat 6 has a positioning block 8 installed, and the positioning block 8 is inserted into the positioning cavity 25. The positioning block 8 has a slot 9, and the slot 9 matches the extrusion rod 21.

[0038] The slot 9 on the positioning block 8 guides the extrusion rod 21 inserted into the extrusion groove 10, and the sliding seat 6 can be positioned after being inserted into the positioning cavity 25 by the positioning block 8.

[0039] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0041] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A plastic hemispherical injection mold, characterized in that, It includes a lower mold base and an upper mold base. The lower mold base includes a base (1) and a lower mold frame (4). Two pads (2) are fixedly connected to the base (1), and the bottom end of the lower mold frame (4) is installed on the pads (2). A lower mold (5) is provided on the lower mold frame (4). A fixing seat (3) is fixedly connected to the base (1). An insert (27) is installed on the fixing seat (3), and the top end of the insert (27) is inserted into the lower mold (5). The upper mold base includes a linkage plate (12), a connecting plate (13), and an upper mold frame (15). Both the linkage plate (12) and the connecting plate (13) have pouring gates (14). The upper mold frame (15) has a runner (22) and a pouring cavity (26), with the runner (22) connected to the pouring cavity (26) and the pouring gate (14). The upper mold frame (15) also has a sliding groove (16) and a through groove (17). (16) It is connected to the casting cavity (26) through the through groove (17). A slider (7) is slidably connected in the sliding groove (16). A core rod (11) is fixedly connected on the slider (7). A drive slider (7) is provided on the linkage plate (12) to move the core rod (11) through the through groove (17) and insert it into the casting cavity (26). The lower model (5) is located in the casting cavity (26) and forms a molding cavity through the insert (27) and the core rod (11).

2. The plastic hemispherical injection mold according to claim 1, characterized in that, A sliding seat (6) is installed in the sliding groove (16), and the slider (7) is slidably connected to the sliding seat (6).

3. A plastic hemispherical injection mold according to claim 2, characterized in that, The plug-in assembly includes a mounting groove (20) on the linkage plate (12). A pressing rod (21) is installed in the mounting groove (20) by bolts. The bottom end of the pressing rod (21) is provided with a first inclined surface (23) and a second inclined surface (24). The bottom end of the pressing rod (21) forms an inclined rod through the first inclined surface (23) and the second inclined surface (24). The slider (7) is provided with a pressing groove (10) that matches the inclined rod.

4. A plastic hemispherical injection mold according to claim 1, characterized in that, The connecting plate (13) is provided with a second guide groove (19), the upper mold frame (15) is provided with a first guide groove (18), and the first guide groove (18) is connected to the sliding groove (16). The second guide groove (19) matches the first guide groove (18).

5. A plastic hemispherical injection mold according to claim 3, characterized in that, The sliding groove (16) has a positioning cavity (25), the sliding seat (6) has a positioning block (8) installed on it, and the positioning block (8) is inserted into the positioning cavity (25). The positioning block (8) has a slot (9) and the slot (9) matches the extrusion rod (21).

6. A plastic hemispherical injection mold according to claim 1, characterized in that, The linkage plate (12) is equipped with a guide pin, and the connecting plate (13) is provided with a guide hole that matches the guide pin.

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