Injection mold with common mold frame

Abstract

The common mold frame injection mold comprises a main mold frame and a cavity module arranged in the main mold frame, the cavity module is detachably arranged in the main mold frame, and an injection molding opening capable of communicating with an inner cavity of the cavity module is detachably formed in one end of the main mold frame; the cavity module comprises a runner plate, an upper cavity module and a lower cavity module, the runner plate covers the top end of the upper cavity module, a runner communicated with the injection molding opening and the upper cavity module is arranged in the runner plate, and the lower cavity module is correspondingly arranged below the upper cavity module; a product injection molding cavity is formed between the bottom end of the upper cavity module and the top end of the lower cavity module. The module interchangeability is high, the number of developed molds is greatly reduced, the mold cost is reduced through the universal mold frame structure, the modular design is convenient to maintain and replace, the production efficiency is improved, the product injection molding cavity structure is suitable for injection molding of high-precision small parts such as gears, idler wheels and pulleys, and the mold frame structure meets various project requirements; and the universality and the flexibility are improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of injection molds, in particular to a shared mold frame injection mold suitable for multiple industries and multiple product varieties, which can be widely applied to the fields of medical devices, automobile electronics, household appliances, office equipment and consumer electronics and meets the technical requirements of industrial 4.0 and flexible manufacturing system for mold rapid adaptation and low-cost management. BACKGROUND

[0002] With the continuous optimization demand of mold development cycle and cost, the traditional special mold frame structure has gradually failed to meet the needs of customization and small-batch production. The shared mold frame technology can realize the sharing of part structures of multiple products, and improves the universality and economy of the mold. In the prior art, the modular design and replaceability of the shared mold frame structure have not formed a systematic solution, especially in small plastic parts such as gear box assemblies, rollers and pulleys, there are still problems such as complex structure and inconvenient replacement. CONTENT OF THE UTILITY MODEL

[0003] The application aims to provide a shared mold frame injection mold which is simple in structure, strong in module interchangeability and suitable for production of multiple product models.

[0004] In order to achieve the above-mentioned purpose, the utility model provides a shared mold frame injection mold, which comprises a main mold frame and a cavity module arranged in the main mold frame, the cavity module is detachably arranged in the main mold frame, and one end of the main mold frame is detachably provided with an injection port which can be communicated with the inner cavity of the cavity module.

[0005] The cavity module comprises a runner plate, an upper cavity module and a lower cavity module, the runner plate is covered on the top end of the upper cavity module, the runner plate has a runner which is communicated with the injection port and the upper cavity module respectively, the lower cavity module is correspondingly arranged below the upper cavity module, and a product injection cavity is formed between the bottom end of the upper cavity module and the top end of the lower cavity module.

[0006] In order to improve the processing efficiency and reduce the production cost, at least two sets of cavity modules are arranged in the main mold frame.

[0007] In order to facilitate disassembly, in a preferred embodiment of the utility model, the upper cavity module comprises an upper cavity block, an upper sleeve block and an inner flow guide sleeve, the upper sleeve block is sleeved outside the upper cavity block, and the inner flow guide sleeve is arranged in the upper cavity block and penetrates the top end and the bottom end of the upper cavity block, the inner flow guide sleeve has a flow channel which is communicated with the runner plate and a flow guide channel which is communicated with the product injection cavity.

[0008] Corresponding to the upper cavity module, the lower cavity module comprises a lower cavity block, a lower sleeve block and an inner sleeve block, the lower cavity block is sleeved outside the inner sleeve block, the lower sleeve block is sleeved outside the inner sleeve block, and the top end surface of the lower sleeve block is connected with the bottom end surface of the upper cavity block and the upper sleeve block, and the product injection cavity is formed between the lower cavity block, the lower sleeve block, the inner sleeve block and the upper cavity block.

[0009] As preferred, the main mold frame comprises an upper mold fixed plate, a lower mold fixed plate, an upper cavity installation plate, a lower cavity installation plate, a water gap plate, a ejector pin cover plate, an ejector pin plate and a lower support plate, the water gap plate is fixed at the bottom end of the upper mold fixed plate, the upper cavity installation plate is arranged at the bottom end of the water gap plate, and the upper cavity installation plate is sleeved outside the upper cavity module, the lower cavity installation plate is arranged at the bottom end of the upper cavity installation plate, and the lower cavity installation plate is sleeved outside the lower cavity module, the lower support plate is arranged at the bottom end of the lower cavity installation plate, the lower support plate can press the lower cavity module tightly, and the bottom end of the lower support plate is provided with a plurality of ejector pin plate guide columns, the ejector pin cover plate is arranged at the top end of the lower mold fixed plate, the ejector pin plate is arranged at the top end of the ejector pin cover plate, and the ejector pin plate can move up and down along the ejector pin plate guide columns, and a plurality of ejector pins are fixed at the top end of the ejector pin plate, and the ejector pins extend into the product injection cavity.

[0010] In summary, the utility model has the following beneficial effects:

[0011] (1) The mold modules are exchangeable, and the number of mold development is greatly reduced;

[0012] (2) The universal mold frame structure reduces the mold cost;

[0013] (3) The modular design is convenient for maintenance and replacement, and the production efficiency is improved;

[0014] (4) The product injection cavity structure is suitable for injection molding of high-precision small parts such as gears, rollers and pulleys;

[0015] (5) The mold frame structure adapts to various project requirements, and improves the universality and flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the three-dimensional structure schematic view of the universal mold frame injection mold of the utility model;

[0017] Figure 2 is the sectional view of the universal mold frame injection mold of the utility model. DETAILED DESCRIPTION

[0018] The preferred embodiments of the utility model are described in detail below with reference to the drawings, so that the advantages and characteristics of the utility model can be more easily understood by the person skilled in the art, and the protection scope of the utility model can be more clearly and explicitly defined.

[0019] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "top", "bottom", "side", "end", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to 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.

[0020] In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, the terms "installed," "connected," "linked," "set up," "equipped with," etc., 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 based on the specific circumstances.

[0021] like Figure 1 , Figure 2 The invention shown is a shared mold base injection mold, including a main mold base and cavity modules disposed within the main mold base. The main mold base is a general frame structure, and the mold base material is P20 mold steel or stainless steel to improve durability. At least two sets of cavity modules are disposed within the main mold base. The cavity modules are detachably disposed within the main mold base. The detachability can be achieved by adopting a pluggable structure design and standardized outer contour treatment for easy and quick replacement.

[0022] Specifically, the main mold frame includes an upper mold fixing plate 1, a lower mold fixing plate 7, an upper cavity mounting plate 4, a lower cavity mounting plate 5, a sprue plate 3, an ejector cover plate 8, an ejector plate 9, and a lower support plate 6. An injection port 2 is detachably installed at the top of the upper mold fixing plate 1. The sprue plate 3 is fixed to the bottom of the upper mold fixing plate 1. The upper cavity mounting plate 4 is located at the bottom of the sprue plate 3. The lower cavity mounting plate 5 is located at the bottom of the upper cavity mounting plate 4. The lower support plate 6 is located at the bottom of the lower cavity mounting plate 5. The bottom of the lower support plate 6 has several ejector plate guide posts 17. The ejector cover plate 8 is located at the top of the lower mold fixing plate 7. The ejector plate 9 is located at the top of the ejector cover plate 8, and the ejector cover plate 8 can drive the ejector plate 9 to move up and down along the ejector plate guide posts 17. Several ejector pins 18 are fixed at the top of the ejector plate 9.

[0023] Specifically, the cavity module includes a flow channel plate 10, an upper cavity module and a lower cavity module. The flow channel plate 10 covers the top of the upper cavity module and has flow channels that connect the injection port 2 and the upper cavity module respectively. The lower cavity module is correspondingly disposed below the upper cavity module, and a product injection cavity is formed between the bottom end of the upper cavity module and the top end of the lower cavity module.

[0024] Specifically, the upper cavity module comprises an upper cavity block 11, an upper sleeve block 12 and an inner flow guide sleeve 19. The upper sleeve block 12 is sleeved outside the upper cavity block 11, and the upper sleeve block 12 is sleeved inside the upper cavity mounting plate 4. The gap is sealed by a sealing ring. The inner flow guide sleeve 19 is arranged in the upper cavity block 11, and the inner flow guide sleeve 19 penetrates the top end and the bottom end of the upper cavity block 11. The inner flow guide sleeve 19 has a flow channel communicating with the flow channel plate 10 and a product injection cavity. The lower cavity module comprises a lower cavity block 14, a lower sleeve block 15 and an inner sleeve block 13. The lower cavity block 14 is sleeved outside the inner sleeve block 13. The lower sleeve block 15 is sleeved outside the inner sleeve block 13 and is sleeved inside the lower cavity mounting plate 5. The gap is sealed by a sealing ring. The top end surface of the lower sleeve block 15 is connected with the bottom end surface of the upper cavity block 11 and the upper sleeve block 12. The lower cavity block 14, the lower sleeve block 15, the inner sleeve block 13 and the upper cavity block 11 form a product injection cavity 16.

[0025] The injection fluid enters through the injection port 2, is injected into the product injection cavity 16 through the flow channel plate 10 and the inner flow guide sleeve 19. The product injection cavity 16 is a standardized circular structure. The internal cavity is suitable for injection molding of plastic parts with a diameter less than 50 mm. It is suitable for injection molding of small parts such as gears, rollers and pulleys. The main mold frame is provided with a cooling system to improve production efficiency.

[0026] The above are preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, equivalent changes made on the basis of the structure, shape, principle and application direction of the present application should be covered within the protection scope of the present application.

Claims

1. A shared mold base injection mold, comprising a main mold base and a cavity module disposed within the main mold base, characterized in that: The cavity module is detachably installed inside the main mold frame, and one end of the main mold frame is detachably provided with an injection port that can communicate with the cavity of the cavity module. The cavity module includes a flow channel plate, an upper cavity module, and a lower cavity module. The flow channel plate covers the top of the upper cavity module and has flow channels that connect the injection port and the upper cavity module respectively. The lower cavity module is correspondingly disposed below the upper cavity module, and a product injection cavity is formed between the bottom of the upper cavity module and the top of the lower cavity module.

2. The shared mold base injection mold according to claim 1, characterized in that: The main mold frame is equipped with at least two sets of cavity modules.

3. The shared mold base injection mold according to claim 1 or 2, characterized in that: The upper cavity module includes an upper cavity block, an upper sleeve block, and an inner guide sleeve. The upper sleeve block is fitted outside the upper cavity block, and the inner guide sleeve is disposed inside the upper cavity block. The inner guide sleeve penetrates the top and bottom of the upper cavity block and has a flow channel connecting the flow channel plate and the product injection cavity.

4. The shared mold base injection mold according to claim 3, characterized in that: The lower cavity module includes a lower cavity block, a lower sleeve block, and an inner sleeve block. The lower cavity block is sleeved outside the inner sleeve block, and the lower sleeve block is sleeved outside the inner sleeve block. The top surface of the lower sleeve block is engaged with the bottom surface of the upper cavity block and the upper sleeve block. The lower cavity block, the lower sleeve block, the inner sleeve block, and the upper cavity block form a product injection cavity.

5. The shared mold base injection mold according to claim 4, characterized in that: The main mold frame includes an upper mold fixing plate, a lower mold fixing plate, an upper cavity mounting plate, a lower cavity mounting plate, a sprue plate, an ejector cover plate, an ejector plate, and a lower support plate. The sprue plate is fixed to the bottom end of the upper mold fixing plate. The upper cavity mounting plate is located at the bottom end of the sprue plate and is sleeved on the upper cavity module. The lower cavity mounting plate is located at the bottom end of the upper cavity mounting plate and is sleeved on the lower cavity module. The lower support plate is located at the bottom end of the lower cavity mounting plate and can press the lower cavity module tightly. The bottom end of the lower support plate has several ejector plate guide posts. The ejector cover plate is located at the top end of the lower mold fixing plate. The ejector plate is located at the top end of the ejector cover plate and can move up and down along the ejector plate guide posts. Several ejector pins are fixed at the top end of the ejector plate, and the ejector pins extend into the product injection cavity.

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