Injection mold with independent mold cavity

Abstract

The utility model discloses an injection mold with independent mold cavities, which comprises an upper mold and a lower mold, and a plurality of groups of independent mold cavity forming components are mounted between the upper mold and the lower mold; a plastic shunting mechanism and a heating device are installed on the upper mold, a plurality of injection molding heads are installed on the plastic shunting mechanism, each injection molding head corresponds to one independent mold cavity forming assembly, and a driving device is installed on each injection molding head and used for controlling an injection molding head valve needle to stretch out and draw back. The heating device is used for heating plastic in the plastic flow dividing mechanism, each independent mold cavity forming assembly comprises an upper mold block and a lower mold block, the upper mold blocks are detachably installed on the upper mold, the lower mold blocks are detachably installed on the lower mold, and the upper mold blocks and the lower mold blocks are matched to form independent mold cavities. By the adoption of the scheme, the effects that the independent mold cavity forming assembly can be independently replaced, and the heating device can enable plastic in the mold to keep flowability are achieved.

Description

Technical Field

[0001] The utility model belongs to the field of injection molds, and in particular relates to an independent cavity injection mold. Background Art

[0002] In order to improve production efficiency, the current injection molds on the market have multi-cavity injection molds that can simultaneously mold multiple products. The main method is to set multiple molding cavities on the molding mold, which also improves production efficiency. When a single molding cavity is worn or has other defects, it cannot be replaced separately. At the same time, there is still room for improvement in the cooling effect of the mold and the difficulty of demoulding. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides an independent cavity injection mold, which can realize independent cavity molding components that can be replaced independently.

[0004] The specific technical scheme is as follows: an independent cavity injection mold, comprising an upper mold and a lower mold, wherein several groups of independent cavity molding components are installed between the upper mold and the lower mold; a plastic diversion mechanism and a heating device are installed on the upper mold, and several injection heads are installed on the plastic diversion mechanism, wherein each injection head corresponds to one group of independent cavity molding components, and a driving device is installed on the injection head for controlling the extension and retraction of the injection head valve needle, and the heating device is used to heat the plastic in the plastic diversion mechanism, and each group of independent cavity molding components includes an upper module and a lower module, the upper module is detachably installed on the upper mold, and the lower module is detachably installed on the lower mold, and the upper module and the lower module cooperate to form an independent cavity.

[0005] Through the above technical solution, the independent cavity molding components can be replaced separately, and the heating device can keep the plastic in the mold fluid.

[0006] Preferably, the heating device is a heating plate, and the heating plate is arranged outside the diversion device.

[0007] Through the above technical solution, the heating device can achieve a better heating effect on the plastic in the diversion device.

[0008] Preferably, the driving device is a cylinder, and a first airflow duct is installed on the upper mold, and the airflow duct is connected to the cylinder duct.

[0009] Through the above technical solution, the gas introduced by the first air flow duct controls the extension and contraction of the cylinder, so that the structure of the driving device is simpler and the operation is more convenient.

[0010] Preferably, the upper module and the lower module are fixed by a connecting rod.

[0011] The above technical solution facilitates the fixing of the upper module and the lower module when they are closed.

[0012] Preferably, a first water cooling circuit is installed on the upper mold, a second water cooling circuit is installed on the plastic diversion mechanism, the second water cooling circuit is connected to the first water cooling circuit, and a third water cooling circuit is installed on the lower mold.

[0013] Through the above technical solution, the upper mold, the plastic diversion mechanism and the lower mold can be cooled separately by water cooling.

[0014] Preferably, a fourth water cooling circuit is installed on the upper module, and a fifth water cooling circuit is installed on the lower module, and the fifth water cooling circuit is connected to the third water cooling circuit.

[0015] Through the above technical solution, the upper module and the lower module are cooled separately by water cooling.

[0016] Preferably, the upper module is provided with a second airflow duct, the lower module is provided with a third airflow duct, and the third airflow duct is connected to the second airflow duct.

[0017] Through the above technical solution, after the product is formed, gas can be introduced into the second airflow duct and enter the third airflow duct, and blown into the cavity of the independent mold cavity molding component by the second airflow duct and the third airflow duct respectively, which facilitates product demolding.

[0018] Preferably, a first positioning column is installed on the upper mold, and a groove is formed on the first positioning column. A second positioning column is installed on the lower mold, and a protrusion matching the groove is installed on the second positioning column.

[0019] The above technical solution facilitates the positioning of the upper mold and the lower mold when they are closed.

[0020] Preferably, a wear-resistant block is installed on the upper module.

[0021] Through the above technical solution, the wear of the upper module during use is reduced, and if the wear-resistant block is worn, the wear-resistant block can be replaced.

[0022] Preferably, the number of the independent cavity molding components is 8.

[0023] Through the above technical solution, the layout of independent cavity molding components in the mold is made more reasonable and the production efficiency is effectively improved.

[0024] The utility model has the following beneficial effects:

[0025] 1. If worn, the independent cavity molding components can be replaced independently.

[0026] 2. Improve the cooling effect of molds and independent cavity molding components.

[0027] 3. Easy to demould after molding.

[0028] 4. Ensure mold accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0030] Figure 1 This is a structural schematic diagram of Example 1;

[0031] Figure 2 This is a top view of the disassembled top cover of Example 1;

[0032] Figure 3 for Figure 2 Top view of the middle heating device after disassembly;

[0033] Figure 4 It is a structural schematic diagram of the plastic diversion mechanism and the injection molding head;

[0034] Figure 5 It is a schematic diagram of the structure of the first positioning column and the second positioning column;

[0035] Figure 6 An exploded schematic diagram of an independent cavity molding component;

[0036] Figure 7 This is a top view of the upper module;

[0037] Figure 8 It is a schematic diagram of the lower module structure;

[0038] Fig. 9 is a schematic diagram of the structure of the fourth water cooling circuit;

[0039] 1. Upper mold, 11. Plastic diversion mechanism, 12. Heating device, 13. Plastic flow inlet, 14. First water cooling circuit, 15. First air flow duct, 16. First positioning column, 17. Groove, 2. Lower mold, 21. Second water cooling circuit, 22. Second positioning column, 23. Bump, 4. Injection head, 41. Driving device, 5. Upper module, 51. Wear-resistant block, 52. Third water cooling circuit, 53. Second air flow duct, 6. Lower module, 61. Fourth water cooling circuit, 62. Third air flow duct, 7. Connecting rod. DETAILED DESCRIPTION

[0040] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the drawings of the specification. In the following description, many specific details are set forth to facilitate a full understanding of the utility model, but the utility model can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0041] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0042] Example 1

[0043] like Figure 1-4 An independent cavity injection mold is shown, comprising an upper mold 1 and a lower mold 2, and 8 groups of independent cavity molding components are installed between the upper mold 1 and the lower mold 2. A plastic diversion mechanism 11 and a heating device 12 are installed on the upper mold 1. A plastic inlet 13 is arranged on the top of the upper mold, and the plastic inlet 13 is connected to the plastic diversion mechanism 11. The heating device 12 is preferably a heating plate. The heating plate is arranged outside the plastic diversion mechanism 11, and heats the plastic in the plastic diversion mechanism 11 to keep it fluid. Eight injection heads 4 are installed on the plastic diversion mechanism 11, and each injection head 4 corresponds to one of the independent cavity molding components. A driving device 41 is installed on the injection head 4, and the driving device 41 in this embodiment uses a cylinder to control the extension and retraction of the injection head 4. The independent cavity molding component includes an upper module 5 and a lower module 6, and the upper module 5 and the lower module 6 are fixed by a connecting rod 7, and the connecting rod 7 is connected to the upper module 5 and the lower module 6 by bolts respectively, and the connecting rod 7 can be disassembled and installed by tightening the bolts. The upper module 5 is bolted to the upper mold 1, and the lower module 6 is bolted to the lower mold 2. The upper module 5 and the lower module 6 cooperate to form an independent mold cavity. The independent mold cavity molding components can be removed and installed separately by tightening the bolts. If there is wear and other defects, the independent mold cavity molding components can be replaced separately.

[0044] like Figure 1 As shown, the upper mold 1 is provided with a first water cooling circuit 14, and the lower mold 2 is provided with a second water cooling circuit 21, so as to realize cooling the upper mold 1 and the lower mold 2 respectively by water cooling.

[0045] like Figure 1 As shown, an air flow duct 15 is installed on the upper mold 1, and the air flow duct 15 is connected to the cylinder duct.

[0046] like Figure 5 As shown, the upper mold 1 is provided with a first positioning column 16, on which a groove 17 is formed. The lower mold 2 is provided with a second positioning column 22, on which a convex block 23 matching the groove 17 is formed, so as to facilitate positioning when the upper mold and the lower mold are closed.

[0047] like Figure 6-9 As shown, a third water cooling circuit 52 is installed on the upper module 5. A fourth water cooling circuit 61 is installed on the lower module 6, and the fourth water cooling circuit 61 is connected to the second water cooling circuit 21. The upper module 5 and the lower module 6 are cooled by water cooling. A wear-resistant block 51 is installed on the upper module 5. To reduce the wear of the upper module 5 during use, the wear-resistant block 51 can be replaced if it is worn.

[0048] like Figure 7-8 As shown, the upper module 5 is provided with a second airflow duct 53, and the lower module 6 is provided with a third airflow duct 62, which is connected to the second airflow duct 53. After the product is formed, gas can be introduced into the second airflow duct and enter the third airflow duct, and blown into the cavity of the independent mold cavity molding component through the second airflow duct and the third airflow duct respectively, so as to facilitate product demolding.

[0049] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An independent cavity injection mold, characterized in that: The invention comprises an upper mold and a lower mold, wherein a plurality of groups of independent mold cavity molding components are installed between the upper mold (1) and the lower mold (2); a plastic diversion mechanism (11) and a heating device (12) are installed on the upper mold (1); a plurality of injection heads (4) are installed on the plastic diversion mechanism (11), wherein each injection head (4) corresponds to one group of independent mold cavity molding components; a driving device (41) is installed on the injection head (4) for controlling the extension and retraction of the injection head (4); the heating device (12) is used to heat the plastic in the plastic diversion mechanism (11); each group of independent mold cavity molding components comprises an upper module (5) and a lower module (6); the upper module (5) is detachably installed on the upper mold (1); the lower module (6) is detachably installed on the lower mold (2); the upper module (5) and the lower module (6) cooperate to form an independent mold cavity.

2. An independent cavity injection mold according to claim 1, characterized in that: The heating device (12) is a heating plate, and the heating plate is arranged outside the plastic diversion mechanism (11).

3. The independent cavity injection mold according to claim 1, characterized in that: The driving device (41) is a cylinder, and a first airflow pipeline (15) is installed on the upper mold (1), and the first airflow pipeline (15) is connected to the cylinder pipeline.

4. The independent cavity injection mold according to claim 1, characterized in that: The upper module (5) and the lower module (6) are fixed by a connecting rod (7).

5. The independent cavity injection mold according to claim 1, characterized in that: The upper mold (1) is provided with a first water cooling circuit (14), and the lower mold (2) is provided with a second water cooling circuit (21).

6. The independent cavity injection mold according to claim 5, characterized in that: The upper module (5) is provided with a third water cooling circuit (52), the lower module (6) is provided with a fourth water cooling circuit (61), and the fourth water cooling circuit (61) is connected to the second water cooling circuit (21).

7. The independent cavity injection mold according to claim 1, characterized in that: The upper module (5) is provided with a second airflow duct (53), and the lower module (6) is provided with a third airflow duct (62), and the third airflow duct (62) is connected to the second airflow duct (53).

8. The independent cavity injection mold according to claim 1, characterized in that: The upper mold (1) is provided with a first positioning column (16), the first positioning column (16) is provided with a groove (17), the lower mold (2) is provided with a second positioning column (22), the second positioning column (22) is provided with a protrusion (23) matching with the groove (17).

9. The independent cavity injection mold according to claim 1, characterized in that: A wear-resistant block (51) is installed on the upper module (5).

10. The independent cavity injection mold according to claim 1, characterized in that: The number of the independent cavity molding components is 8.

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