Injection mold for automatically separating small product from pouring gate after mold opening

Abstract

The utility model discloses an injection mold for automatically separating a small product from a pouring gate after mold opening, which comprises a fixed mold assembly, a movable mold assembly, a core mold assembly, a runner cavity mold assembly and a mold opening controller assembly, and the mold opening controller assembly comprises a mold opening pull frame, a telescopic limiting block and a mold opening limiting frame. The four corners of the fixed mold assembly are each provided with a mold opening pull frame, the four corners, corresponding to the mold opening pull frames, of the core mold assembly are each provided with a telescopic limiting block, the four corners, corresponding to the mold opening pull frames, of the runner cavity mold assembly and the four corners, corresponding to the mold opening pull frames, of the movable mold assembly are each provided with a mold opening limiting frame, and right-angle hook grooves are formed in the mold opening pull frames. The mold opening limiting frame is provided with an obtuse-angle hook groove, the position, corresponding to the right-angle hook groove, of the telescopic limiting block is arranged in a right-angle mode, and the position, corresponding to the obtuse-angle hook groove, of the telescopic limiting block is arranged in an obtuse-angle mode.

Description

Technical Field

[0001] The utility model relates to the technical field of injection mold equipment, in particular to an injection mold for small products which can realize automatic separation of the product and the gate after mold opening. Background Art

[0002] In existing injection molding pipe fittings molds, in order to improve production efficiency, realize automated production, and reduce the labor intensity of workers, when designing the mold, they will try their best to consider that the gate and the product can be automatically separated after the product is demoulded, and no manual secondary trimming is required. At present, latent gates are commonly used in pipe fitting molds to achieve this demand, but the use of latent gates requires that the outer surface of the product reaches a certain molding area. For some small products, latent gates cannot be used. In the past, after the small product mold is demoulded, the product and the runner are connected as one, and the product and the runner need to be separated manually at a later time. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an injection mold for small products that can automatically separate the product and the gate after mold opening, thereby solving the problem that for some small products, a latent gate cannot be used, and the product and the runner are connected as one after the mold is demoulded by the previous small product mold, and the product and the runner need to be separated manually at a later time.

[0004] The utility model is realized by the following technical solutions:

[0005] An injection mold for realizing automatic separation of a product and a gate after mold opening for a small product, comprising a fixed mold assembly, a movable mold assembly, a core mold assembly, a runner cavity mold assembly and a mold opening controller assembly, wherein the fixed mold assembly is fixed on a fixed mold plate of an injection molding machine, and a lower cavity is arranged in the fixed mold assembly; a core mold assembly is movably arranged on the fixed mold assembly, and a core is arranged on the core mold assembly; a runner cavity mold assembly is movably arranged on the core mold assembly, and a runner and an upper cavity are arranged in the runner cavity mold assembly; a movable mold assembly is fixedly connected to the runner cavity mold assembly, and the movable mold assembly is connected to an injection molding machine extension transmission member;

[0006] The mold opening controller assembly includes a mold opening puller, a telescopic limit block and a mold opening limit frame. A mold opening puller is respectively provided at the four corner positions of the fixed mold assembly, and a telescopic limit block is respectively provided at the four corner positions of the core mold assembly corresponding to the mold opening puller. A mold opening limit frame is respectively provided at the four corner positions of the runner cavity mold assembly and the movable mold assembly corresponding to the mold opening puller. A right-angle hook groove is provided on the mold opening puller, and an obtuse-angle hook groove is provided on the mold opening limit frame. The position on the telescopic limit block corresponding to the right-angle hook groove is set at a right angle, and the telescopic limit block is set at an obtuse angle corresponding to the obtuse-angle hook groove.

[0007] Furthermore, the fixed mold assembly is provided with an injection hole, and the injection hole is communicated with the flow channel.

[0008] Furthermore, inclined guide columns are respectively provided at four corner positions on the docking surface between the fixed mold assembly and the core mold assembly, and inclined guide holes are provided on the core mold assembly corresponding to the inclined guide columns.

[0009] Furthermore, a limit block installation groove is provided on the core mold assembly corresponding to the installation of the telescopic limit block, and a telescopic spring is provided in the limit block installation groove.

[0010] Furthermore, the mold opening pull frame is provided with a U-shaped frame structure, and the mold opening limiting frame is inserted in the U-shaped frame structure.

[0011] Furthermore, the core mold assembly and the runner cavity mold assembly are respectively provided with step screw connections at four corner positions. When the mold is opened, the integrally connected runner cavity mold assembly is driven to move by pulling the movable mold assembly. When the runner cavity mold assembly and the core mold assembly are separated by a certain stroke, the runner cavity mold assembly moves as a whole by pulling the core mold assembly through the step screw.

[0012] Compared with the prior art, the utility model has the following advantages and beneficial effects:

[0013] 1. The utility model is an injection mold for small products which can realize automatic separation of the product and the gate after mold opening. The existing injection mold is divided into two groups of module structures, namely, a fixed mold component and a movable mold component, and is designed to be divided into four groups of module structures, namely, a fixed mold component, a movable mold component, a core mold component and a runner cavity mold component, so that the core mold component can be separated from the fixed mold component and the movable mold component, which makes it easy to separate the molded product from the gate and the runner body.

[0014] 2. The utility model discloses an injection mold for small products which can realize automatic separation of the product and the gate after mold opening. The mold opening controller component is provided. The mold opening controller component mainly comprises three parts: a mold opening pull frame, a telescopic limit block and a mold opening limit frame. These three parts are correspondingly arranged on different mold components. When the mold is opened, the mold opening pull frame, the telescopic limit block and the mold opening limit frame are limited by each other, thereby controlling the separation order between the mold components, thereby separating the molded product from the gate and the runner body.

[0015] 3. The utility model is an injection mold for small products which can realize automatic separation of the product and the gate after mold opening. After the product is demoulded, the product and the gate runner are automatically separated, thereby realizing automated production. There is no need to manually separate the gate at a later stage, thereby improving production efficiency and reducing the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the embodiments of the present utility model, constitute a part of this application, and do not constitute a limitation of the embodiments of the present utility model. In the drawings:

[0017] Figure 1 It is a structural schematic diagram of an existing injection mold.

[0018] Figure 2 It is a schematic diagram of the integrated structure of the existing product, the gate and the runner body.

[0019] Figure 3 The structure of the injection mold of the present invention is schematically shown in FIG. Figure 1 .

[0020] Figure 4 The structure of the injection mold of the present invention is schematically shown in FIG. Figure 2 .

[0021] Figure 5 It is a structural schematic diagram of the present invention.

[0022] Figure 6 It is a schematic diagram of the structure of the limit block installation slot and the telescopic spring of the present invention.

[0023] Figure 7 It is a structural schematic diagram of the fixed mold assembly of the present invention.

[0024] Figure 8 It is a structural schematic diagram of the core mold assembly of the present invention.

[0025] Fig. 9 It is a schematic diagram of the structure of the product of the present invention and the separate parts of the inlet gate and the runner body.

[0026] Marks and corresponding parts names in the attached drawings:

[0027] 1-fixed mold assembly, 2-movable mold assembly, 3-core mold assembly, 4-runner cavity mold assembly, 5-mold opening controller assembly, 6-lower cavity, 7-core, 8-runner, 9-upper cavity, 10-mold opening puller, 11-telescopic limit block, 12-mold opening limit frame, 13-right-angle hook groove, 14-obtuse-angle hook groove, 15-injection hole, 16-inclined guide column, 17-inclined guide hole, 18-limit block mounting groove, 19-telescopic spring, 20-U-shaped frame structure, 21-step screw, 22-product, 23-inlet gate and runner body. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0029] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0030] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside", etc. appear to indicate the orientation or position relationship, it is based on the orientation or position relationship shown in the drawings, which is 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 orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In the description of the present invention, unless otherwise clearly specified and limited, if the term "connection" or the like appears to indicate the connection relationship between components, the term should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two components or the interaction relationship between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] Example

[0033] like Figure 1-9 As shown, the utility model is an injection mold for small products that can automatically separate the product and the gate after the mold is opened. Figure 1 As shown, the existing injection mold structure also includes a fixed mold assembly 1, a movable mold assembly 2, a core mold assembly 3 and a runner cavity mold assembly 4, but the movable mold assembly 2, the core mold assembly 3 and the runner cavity mold assembly 4 are designed as an integrated structure and cannot be separated. The existing injection mold is divided into two groups of module structures, namely the fixed mold assembly 1 and the movable mold assembly 2, and is designed to be divided into four groups of module structures, namely the fixed mold assembly 1, the movable mold assembly 2, the core mold assembly 3 and the runner cavity mold assembly 4, so that the core mold assembly 3 can be separated from the fixed mold assembly 1 and the movable mold assembly 2, so as to facilitate the separation of the molded product 22 from the inlet gate and the runner body 23. Fig. 9 shown.

[0034] like Figure 3-4As shown, the present invention comprises a fixed mold assembly 1, a movable mold assembly 2, a core mold assembly 3, a runner cavity mold assembly 4 and a mold opening controller assembly 5, wherein the fixed mold assembly 1 is fixed on the fixed mold plate of the injection molding machine, and a lower cavity 6 is arranged in the fixed mold assembly 1; a core mold assembly 3 is movably arranged on the fixed mold assembly 1, and a core 7 is arranged on the core mold assembly 3; a runner cavity mold assembly 4 is movably arranged on the core mold assembly 3, and a runner 8 and an upper cavity 9 are arranged in the runner cavity mold assembly 4; a movable mold assembly 2 is fixedly connected to the runner cavity mold assembly 4, and the movable mold assembly 2 is connected to the extension transmission member of the injection molding machine; the fixed mold assembly 1, the movable mold assembly 2, the core mold assembly 3, and the runner cavity mold assembly 4 are structurally the same as the existing injection mold, except that their connection structures are changed. The lower cavity 6, the core 7 and the upper cavity 9 constitute the model structure of the product 22.

[0035] like Figure 6-7 As shown, the mold opening controller component 5 includes a mold opening puller 10, a telescopic limit block 11 and a mold opening limit frame 12. The mold opening controller component 5 is the core component of the present invention. The mold opening controller component 5 controls the separation order of related mold components, thereby realizing the separation of the molded product 22 from the inlet gate and the runner body 23. A mold opening puller 10 is respectively provided at the four corner positions of the fixed mold component 1, and a telescopic limit block 11 is respectively provided at the four corner positions of the core mold component 3 corresponding to the mold opening puller 10. A mold opening limit frame 12 is respectively provided at the four corner positions of the runner cavity mold component 4 and the movable mold component 2 corresponding to the mold opening puller 10. A right-angle hook groove 13 is provided on the mold opening puller 10, and an obtuse-angle hook groove 14 is provided on the mold opening limit frame 12. The position corresponding to the right-angle hook groove 13 on the telescopic limit block 11 is set at a right angle, and the position corresponding to the obtuse-angle hook groove 14 on the telescopic limit block 11 is set at an obtuse angle.

[0036] The utility model discloses an injection mold for small products which can realize automatic separation of the product and the gate after mold opening. The mold opening controller component 5 is provided. The mold opening controller component 5 mainly comprises three parts: a mold opening pull frame 10, a telescopic limit block 11 and a mold opening limit frame 12. The three parts are correspondingly arranged on different mold components. When the mold is opened, the mold opening pull frame 10, the telescopic limit block 11 and the mold opening limit frame 12 are limited by each other, thereby controlling the separation order between the mold components, so that the molded product is separated from the gate and the runner body.

[0037] like Figure 3-9As shown, the utility model is an injection mold for realizing automatic separation of the product and the gate after mold opening for small products. The working principle is: the fixed mold assembly 1 is fixed on the fixed mold plate of the injection molding machine, and the movable mold assembly 2 is connected to the extension transmission member of the injection molding machine; after the product injection is completed, when the mold is opened, the movable mold assembly 2 (the movable mold assembly 2 and the runner cavity mold assembly 4 are one piece, because the movable mold assembly 2 and the runner cavity mold assembly 4 are fixedly connected) moves away from the fixed mold assembly 1, and the fixed mold assembly 1 is on the mold opening controller assembly 5. 0, hooks the telescopic limit block 11 on the core mold assembly 3, making the core mold assembly 3 unable to be separated from the fixed mold assembly 1, while the runner cavity mold assembly 4 is separated from the core mold assembly 3; when the runner cavity mold assembly 4 is separated from the core mold assembly 3 to a certain distance, the telescopic limit block 11 retracts under the action of the mold opening limit frame 12, and the telescopic limit block 11 is unhooked from the mold opening pull frame 10; when the movable mold assembly 2 and the runner cavity mold assembly 4 continue to move, the core mold assembly 3 is separated from the fixed mold assembly 1.

[0038] In the above mold opening process, the product 22 is wrapped on the core 7 on the core mold assembly 3, and the inlet gate and runner body 23 are adhered to the upper cavity 9. When the runner cavity mold assembly 4 is separated from the core mold assembly 3, the product 22 and the inlet gate and runner body 23 are disconnected at the glue inlet position to achieve separation. When the movable mold assembly 2 and the runner cavity mold assembly 4 continue to move, the core mold assembly 3 and the fixed mold assembly 1 are separated, and the core mold assembly 3 and the fixed mold assembly 1 are completely opened, so that the product 22, the inlet gate and the runner body 23 can be completely taken out. What is taken out is the separated body of the product 22, the inlet gate and the runner body 23.

[0039] After the product is demoulded, the product and the gate runner are automatically separated, realizing automated production. There is no need to manually separate the gate later, which improves production efficiency and reduces the labor intensity of workers.

[0040] The fixed mold assembly 1 is provided with an injection hole 15, which is connected to the runner 8. The injection hole 15 is a conical structure. After injection molding, the injection molding body of the injection hole 15 and the injection molding body on the runner 8 form an inlet and a runner body 23 as a whole. As shown in FIG8.

[0041] The four corner positions of the fixed mold assembly 1 and the core mold assembly 3 are respectively provided with inclined guide columns 16, and the core mold assembly 3 corresponding to the inclined guide columns 16 is provided with inclined guide holes 17. This is an existing structure of the existing injection mold, which mainly serves as a guide.

[0042] The core mold assembly 3 to which the telescopic limit block 11 is installed is provided with a limit block installation groove 18, and a telescopic spring 19 is provided in the limit block installation groove 18. The telescopic limit block 11 provided on the limit block installation groove 18 is extended by the elastic force of the telescopic spring 19 to play a positioning role, but the telescopic limit block 11 is guided and squeezed, and the telescopic limit block 11 retracts into the limit block installation groove 18, and loses its positioning role.

[0043] The mold opening puller 10 is provided with a U-shaped frame structure 20, and the mold opening limit frame 12 is inserted in the U-shaped frame structure 20. This plug-in structure facilitates stable transmission and tight cooperation between the mold opening controller components 5.

[0044] The core mold assembly 3 and the runner cavity mold assembly 4 are connected by stepped screws 21 at four corners. When the mold is opened, the runner cavity mold assembly 4 connected as a whole is moved by pulling the movable mold assembly 2. When the runner cavity mold assembly 4 is separated from the core mold assembly 3 by a certain stroke, the runner cavity mold assembly 4 is pulled by the stepped screws 21 to move as a whole. The stepped screws 21 mainly play a pulling role.

[0045] At present, we have invented a design scheme for automatically separating the gate and product of the injection mold for small products. The scheme is as follows: after the product is injection molded, the product in the cavity is connected to the gate and the runner as a whole, but the product is molded on the core, the core is fixed on the slider, and the slider is installed on the movable mold fixing plate. When the mold is opened, the movable mold fixing plate of the mold, together with the slider, the core and the product, are separated from the cavity plate through the mold opening controller. After the separation, the gate and the runner are still left in the cavity plate. Because the gate of small products is small, the product is forcibly torn apart and separated from the gate during the mold opening process, thereby realizing automatic separation of the product from the gate and the runner.

[0046] 1. The utility model is an injection mold for small products which can realize automatic separation of the product and the gate after mold opening. The existing injection mold is divided into two groups of module structures, namely, a fixed mold component 1 and a movable mold component 2, and is designed to be divided into four groups of module structures, namely, a fixed mold component 1, a movable mold component 2, a core mold component 3 and a runner cavity mold component 4, so that the core mold component 3 can be separated from the fixed mold component 1 and the movable mold component 2, so that it is convenient to separate the molded product from the gate and the runner body.

[0047] By setting up the mold opening controller component 5, the mold opening controller component 5 mainly consists of three parts: a mold opening pull frame 10, a telescopic limit block 11 and a mold opening limit frame 12. These three parts are correspondingly arranged on different mold components. When opening the mold, the mold opening pull frame 10, the telescopic limit block 11 and the mold opening limit frame 12 are limited by each other, thereby controlling the separation order between the mold components, thereby separating the molded product from the gate and the runner body.

[0048] After the product is demoulded, the product and the gate runner are automatically separated, realizing automated production. There is no need to manually separate the gate later, which improves production efficiency and reduces the labor intensity of workers.

[0049] The specific implementation methods described above further illustrate the purpose, technical solutions and beneficial effects of the utility model in detail. It should be understood that the above description is only the specific implementation method of the utility model and is not used to limit the protection scope of the utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. An injection mold for realizing automatic separation of a product and a gate after mold opening for a small product, comprising a fixed mold assembly (1), a movable mold assembly (2), a core mold assembly (3), a runner cavity mold assembly (4) and a mold opening controller assembly (5), characterized in that: A lower mold cavity (6) is provided in the fixed mold assembly (1); a core mold assembly (3) is movably provided on the fixed mold assembly (1), and a core (7) is provided on the core mold assembly (3); a flow channel mold cavity assembly (4) is movably provided on the core mold assembly (3), and a flow channel (8) and an upper mold cavity (9) are provided in the flow channel mold cavity assembly (4); a movable mold assembly (2) is fixedly connected to the flow channel mold cavity assembly (4); The mold opening controller component (5) comprises a mold opening puller (10), a telescopic limit block (11) and a mold opening limit frame (12); a mold opening puller (10) is respectively provided at the four corner positions of the fixed mold component (1); a telescopic limit block (11) is respectively provided at the four corner positions of the core mold component (3) corresponding to the mold opening puller (10); a mold opening limit frame (12) is respectively provided at the four corner positions of the runner cavity mold component (4) and the movable mold component (2) corresponding to the mold opening puller (10); a right-angle hook groove (13) is provided on the mold opening puller (10); an obtuse-angle hook groove (14) is provided on the mold opening limit frame (12); a position on the telescopic limit block (11) corresponding to the right-angle hook groove (13) is arranged at a right angle; and a position on the telescopic limit block (11) corresponding to the obtuse-angle hook groove (14) is arranged at an obtuse angle.

2. According to claim 1, an injection mold for small products that realizes automatic separation of the product and the gate after mold opening, characterized in that: The fixed mold assembly (1) is provided with an injection hole (15), and the injection hole (15) is connected to the flow channel (8).

3. According to claim 1, an injection mold for small products that realizes automatic separation of the product and the gate after mold opening, characterized in that: Inclined guide columns (16) are respectively provided at four corner positions on the docking surface between the fixed mold component (1) and the core mold component (3), and inclined guide holes (17) are provided on the core mold component (3) corresponding to the inclined guide columns (16).

4. The injection mold for small products that realizes automatic separation of the product and the gate after mold opening according to claim 1, characterized in that: The core mold assembly (3) on which the telescopic limit block (11) is installed is provided with a limit block installation groove (18), and a telescopic spring (19) is provided in the limit block installation groove (18).

5. The injection mold for small products that realizes automatic separation of the product and the gate after mold opening according to claim 1, characterized in that: The mold opening pull frame (10) is provided with a U-shaped frame structure (20), and the mold opening limit frame (12) is inserted into the U-shaped frame structure (20).

6. An injection mold for small products that realizes automatic separation of the product and the gate after mold opening according to any one of claims 1 to 5, characterized in that: The core mold assembly (3) and the runner cavity mold assembly (4) are respectively connected at four corner positions with stepped screws (21) that play a traction role.

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