A demoulding structure for a plastic fan frame mold

Abstract

The utility model relates to the technical field of injection molds, and discloses a demoulding structure for a plastic fan frame mold, including a bottom plate, the upper end of which is fixedly connected to a mold frame, and the upper end of which is provided with a face pin plate. The demoulding structure for the plastic fan frame mold is provided with a clamping device, and when the movable mold assembly and the fixed mold assembly are molded together, the positioning column is inserted into the sleeve, and during this process, the limit pin is inserted into the limit groove of the movable mold, the movable mold assembly and the fixed mold assembly are molded together, the front mold core and the rear mold core are adapted to be combined, and the injection molding operation is performed through the gate, and an inclined surface is provided on the outer side of the movable mold. After the injection molding is completed, an external driving component drives the movable mold assembly to separate from the fixed mold assembly, and the telescopic cylinder is started to drive the movable mold to move outward along the limit rail. The inclined surface of the movable mold squeezes the product, and the product is subjected to an upward component force, so that the product is separated from the movable mold assembly, and the demoulding is smooth. The mold uses the telescopic cylinder as a demoulding driving mechanism, and the demoulding speed is fast and the mold structure is compact.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to a demoulding structure for a plastic fan frame mold. Background Art

[0002] Injection mold is a key process for manufacturing plastic products. The molten plastic is injected into the mold under high pressure and cooled and solidified under certain temperature and pressure conditions to eventually form the desired plastic product.

[0003] The Chinese utility model patent announcement number is: CN 213198611 U, which discloses: an injection mold that is easy to demold. The injection mold that is easy to demold has a push rod fixing plate on the lower side of the first molding plate, and a first guide hole connected to the pouring cavity is opened on the push rod fixing plate. A demolding push rod is slidably connected in the first guide hole. The demolding push rod can push the molten material formed in the pouring cavity out of the pouring cavity, thereby realizing a simple and convenient demolding process. At the same time, the pouring mold can also protect the model pushed out of the pouring cavity by the demolding push rod during the demolding process from being damaged. However, the injection mold that is easy to demold is demolded by the demolding push rod. During the process of the demolding push rod ejecting the product, the product is subjected to a force in a single direction, and the contact area between the demolding push rod and the product is small, which can easily damage the product. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a demoulding structure for a plastic fan frame mold, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by the utility model is: a demolding structure for a plastic fan frame mold, comprising a base plate, the upper end of the base plate is fixedly connected to a mold frame, the upper end of the base plate is provided with a face needle plate, the upper end of the base plate is fixedly connected to a limit column, a spring is sleeved on the outer side of the limit column, the upper end of the face needle plate is fixedly connected to a top column, the upper end of the mold frame is provided with a movable mold assembly, the upper end of the mold frame is fixedly connected with a sleeve, the upper end of the movable mold assembly is provided with a fixed mold assembly, the upper end of the fixed mold assembly is provided with a panel, the upper end of the panel is provided with a gate, and the front end of the fixed mold assembly is provided with a heavy-duty connector.

[0006] Preferably, the movable mold assembly comprises a movable mold base, a telescopic cylinder, a movable mold, a limiting groove, a limiting rail and a rear mold core, the movable mold base is fixedly installed with telescopic cylinders on both sides, the output end of the telescopic cylinder is fixedly connected to the movable mold, the upper end of the movable mold base is provided with a rear mold core, the upper end of the rear mold core is provided with a limiting rail, and the inner side of the movable mold is provided with a limiting groove;

[0007] The fixed mold assembly includes a fixed mold base, a front mold core, a limit pin, a positioning column and a cooling pipe. The front mold core is arranged at the lower end of the fixed mold base, the limit pin is arranged at the lower end of the front mold core, the positioning column is arranged at the lower end of the fixed mold base, and a cooling pipe is arranged on the left side of the fixed mold base.

[0008] Through the above technical solution, a movable mold component is provided, which is combined with a fixed mold component to form an injection mold, which is convenient for injection molding.

[0009] Preferably, the telescopic cylinder, the movable mold, the limiting groove and the limiting rail are provided in two groups, and the two groups are centrally symmetrically arranged.

[0010] Through the above technical solution, a telescopic cylinder and a movable mold are set up, and the telescopic cylinder is started to drive the movable mold to move. When the two movable molds are in close contact, they are matched with the fixed mold assembly for injection molding. When the two movable molds are separated, the product is separated from the mold.

[0011] Preferably, the movable die is slidably connected to the limiting rail, and the sleeve is slidably connected to the movable die seat.

[0012] Through the above technical solution, a sleeve is provided to maintain the precise positioning of the movable mold assembly, and a fixed mold assembly is provided to position the movable mold assembly.

[0013] Preferably, the limiting pin is matched with the limiting groove, and the positioning column is matched with the sleeve.

[0014] Through the above technical scheme, a limit pin is set, and when the movable mold assembly and the fixed mold assembly are closed, the movable molds on the same straight line are tightly touched, and the external driving assembly drives the movable mold assembly to move toward the fixed mold assembly, and the positioning column is inserted into the sleeve. During this process, the limit pin is inserted into the limit groove of the movable mold, the movable mold assembly and the fixed mold assembly are closed, the front mold core and the rear mold core are adapted to be combined, and the injection molding operation is performed through the gate.

[0015] Preferably, an inclined surface is arranged on the outer side of the movable mold, and the movable mold is matched with the front mold core.

[0016] Through the above technical solution, an inclined surface is provided on the outer side of the movable mold. After the injection molding is completed, the external driving component drives the movable mold component to separate from the fixed mold component. The telescopic cylinder is started to drive the movable mold to move outward along the limit rail. The inclined surface of the movable mold squeezes the product, and the product is subjected to an upward force, so that the product is separated from the movable mold component and the demolding is smooth.

[0017] Compared with the prior art, the utility model provides a demoulding structure for a plastic fan frame mold, which has the following beneficial effects:

[0018] The demoulding structure of the plastic fan frame mold is that when the movable mold component and the fixed mold component are molded together, the movable molds on the same straight line are tightly touched, the external driving component drives the movable mold component to move toward the fixed mold component, and the positioning column is inserted into the sleeve. During this process, the limit pin is inserted into the limit groove of the movable mold, the movable mold component and the fixed mold component are molded together, the front mold core and the rear mold core are adapted to be combined, and injection molding is performed through the gate. An inclined surface is arranged on the outer side of the movable mold. After the injection molding is completed, the external driving component drives the movable mold component to separate from the fixed mold component, and the telescopic cylinder is started to drive the movable mold to move outward along the limit rail. The inclined surface of the movable mold squeezes the product, and the product is subjected to an upward component force and forces on both sides, which makes it easier to separate the product from the movable mold component and improves the smoothness of demoulding. The contact area between the inclined surface of the movable mold and the product is large, and the product is not easily damaged. The mold uses the telescopic cylinder as a demoulding drive mechanism, and the demoulding speed is fast and the mold structure is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional structure of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 2 The three-dimensional structure of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 3 This is a schematic diagram of the split structure of the utility model Figure 1 ;

[0022] Figure 4 This is a schematic diagram of the split structure of the utility model Figure 2 ;

[0023] Figure 5 It is an enlarged structural diagram of the movable mold assembly of the utility model.

[0024] Among them: 1. Bottom plate; 2. Mold frame; 3. Face needle plate; 4. Limiting column; 5. Spring; 6. Ejector column; 7. Moving mold assembly; 701. Moving mold base; 702. Telescopic cylinder; 703. Moving mold; 704. Limiting groove; 705. Limiting rail; 706. Rear mold core; 8. Sleeve; 9. Fixed mold assembly; 901. Fixed mold base; 902. Front mold core; 903. Limiting needle; 904. Positioning column; 905. Cooling pipe; 10. Panel; 11. Gate; 12. Heavy-load connector. DETAILED DESCRIPTION

[0025] 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 in 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.

[0026] Embodiment 1: Figure 1-5 As shown, the utility model provides a demolding structure for a plastic fan frame mold, including a base plate 1, a mold frame 2 is fixedly connected to the upper end of the base plate 1, a face needle plate 3 is arranged on the upper end of the base plate 1, a limiting column 4 is fixedly connected to the upper end of the base plate 1, a spring 5 is sleeved on the outer side of the limiting column 4, a top column 6 is fixedly connected to the upper end of the face needle plate 3, a movable mold assembly 7 is arranged on the upper end of the mold frame 2, a sleeve 8 is fixedly connected to the upper end of the mold frame 2, a fixed mold assembly 9 is arranged on the upper end of the movable mold assembly 7, a panel 10 is arranged on the upper end of the fixed mold assembly 9, a gate 11 is opened on the upper end of the panel 10, and a heavy-duty connector 12 is arranged on the front end of the fixed mold assembly 9.

[0027] Specifically, the movable mold assembly 7 includes a movable mold base 701, a telescopic cylinder 702, a movable mold 703, a limiting groove 704, a limiting rail 705 and a rear mold core 706. The telescopic cylinders 702 are fixedly installed on both sides of the movable mold base 701, and the output end of the telescopic cylinder 702 is fixedly connected to the movable mold 703. The upper end of the movable mold base 701 is provided with a rear mold core 706, the upper end of the rear mold core 706 is provided with a limiting rail 705, and the inner side of the movable mold 703 is provided with a limiting groove 704. The advantage is that the movable mold assembly 7 is provided, and combined with the fixed mold assembly 9 to form an injection mold, which is convenient for injection molding.

[0028] Specifically, two groups of telescopic cylinder 702, movable mold 703, limiting groove 704 and limiting rail 705 are provided, and the two groups are centrally symmetrically arranged. The advantage is that the telescopic cylinder 702 and movable mold 703 are provided, and the telescopic cylinder 702 is started to drive the movable mold 703 to move, and when the two movable molds 703 are in close contact, they match with the fixed mold assembly 9 for injection molding, and when the two movable molds 703 are separated, the product is separated from the mold.

[0029] Specifically, the movable mold 703 is slidably connected to the limiting rail 705, and the sleeve 8 is slidably connected to the movable mold base 701. The advantage is that the sleeve 8 is provided to maintain the precise positioning of the movable mold assembly 7.

[0030] Embodiment 2: Figure 2-5 As shown, as an improvement to the previous embodiment.

[0031] Specifically, the fixed mold assembly 9 includes a fixed mold base 901, a front mold core 902, a limit pin 903, a positioning column 904 and a cooling pipe 905. The front mold core 902 is arranged at the lower end of the fixed mold base 901, the limit pin 903 is arranged at the lower end of the front mold core 902, the positioning column 904 is arranged at the lower end of the fixed mold base 901, and the cooling pipe 905 is arranged on the left side of the fixed mold base 901. The advantage is that the fixed mold assembly 9 is arranged to position the movable mold assembly 7.

[0032] Specifically, the limit pin 903 is matched with the limit groove 704, and the positioning column 904 is matched with the sleeve 8. The advantage is that, with the setting of the limit pin 903, when the movable mold assembly 7 and the fixed mold assembly 9 are molded, the movable mold 703 on the same straight line are in close contact, the external driving assembly drives the movable mold assembly 7 to move toward the fixed mold assembly 9, and the positioning column 904 is inserted into the sleeve 8. During this process, the limit pin 903 is inserted into the limit groove 704 of the movable mold 703, the movable mold assembly 7 and the fixed mold assembly 9 are molded, the front mold core 902 and the rear mold core 706 are matched and combined, and the injection molding operation is performed through the gate 11.

[0033] Specifically, the outer side of the movable mold 703 is provided with an inclined surface, and the movable mold 703 is adapted to the front mold core 902. The advantage is that the outer side of the movable mold 703 is provided with an inclined surface, and after the injection molding is completed, the external driving component drives the movable mold component 7 to separate from the fixed mold component 9, and the telescopic cylinder 702 is started to drive the movable mold 703 to move outward along the limit rail 705. The inclined surface of the movable mold 703 squeezes the product, and the product is subjected to an upward component force, so that the product is separated from the movable mold component 7, and the demoulding is smooth.

[0034] Working principle: when the movable mold assembly 7 and the fixed mold assembly 9 are molded, the movable mold 703 on the same straight line is in close contact, the external driving assembly drives the movable mold assembly 7 to move toward the fixed mold assembly 9, and the positioning column 904 is inserted into the sleeve 8. During this process, the limit pin 903 is inserted into the limit groove 704 of the movable mold 703, the movable mold assembly 7 and the fixed mold assembly 9 are molded, the front mold core 902 and the rear mold core 706 are adapted to be combined, and the injection operation is performed through the gate 11. After the injection molding is completed, the external driving assembly drives the movable mold assembly 7 to separate from the fixed mold assembly 9, and the telescopic cylinder 702 is started to drive the movable mold 703 to move outward along the limit rail 705. The inclined surface of the movable mold 703 squeezes the product, and the product is subjected to an upward component of force, so that the product is separated from the movable mold assembly 7 and the demolding is smooth.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A demoulding structure for a plastic fan holder mold, comprising a bottom plate (1), characterized in that: The upper end of the bottom plate (1) is fixedly connected to a mold frame (2), a face needle plate (3) is arranged at the upper end of the bottom plate (1), a limit column (4) is fixedly connected to the upper end of the bottom plate (1), a spring (5) is sleeved on the outer side of the limit column (4), a top column (6) is fixedly connected to the upper end of the face needle plate (3), a movable mold assembly (7) is arranged at the upper end of the mold frame (2), a sleeve (8) is fixedly connected to the upper end of the mold frame (2), a fixed mold assembly (9) is arranged at the upper end of the movable mold assembly (7), a panel (10) is arranged at the upper end of the fixed mold assembly (9), a gate (11) is opened at the upper end of the panel (10), and a heavy-duty connector (12) is arranged at the front end of the fixed mold assembly (9).

2. The demoulding structure for a plastic fan holder mold according to claim 1, characterized in that: The movable mold assembly (7) comprises a movable mold base (701), a telescopic cylinder (702), a movable mold (703), a limiting groove (704), a limiting rail (705) and a rear mold core (706); the telescopic cylinder (702) is fixedly installed on both sides of the movable mold base (701); the output end of the telescopic cylinder (702) is fixedly connected to the movable mold (703); the upper end of the movable mold base (701) is provided with a rear mold core (706); the upper end of the rear mold core (706) is provided with a limiting rail (705); and the inner side of the movable mold (703) is provided with a limiting groove (704); The fixed mold assembly (9) comprises a fixed mold base (901), a front mold core (902), a limiting pin (903), a positioning column (904) and a cooling pipe (905); the front mold core (902) is arranged at the lower end of the fixed mold base (901); the limiting pin (903) is arranged at the lower end of the front mold core (902); the positioning column (904) is arranged at the lower end of the fixed mold base (901); and a cooling pipe (905) is arranged on the left side of the fixed mold base (901).

3. The demoulding structure for a plastic fan holder mold according to claim 2, characterized in that: The telescopic cylinder (702), the movable mold (703), the limiting groove (704) and the limiting rail (705) are provided in two groups, and the two groups are centrally symmetrically arranged.

4. The demoulding structure for a plastic fan holder mold according to claim 2, characterized in that: The movable die (703) is slidably connected to the limiting rail (705), and the sleeve (8) is slidably connected to the movable die base (701).

5. The demoulding structure for a plastic fan holder mold according to claim 2, characterized in that: The limiting pin (903) is matched with the limiting groove (704), and the positioning column (904) is matched with the sleeve (8).

6. The demoulding structure for a plastic fan holder mold according to claim 2, characterized in that: The outer side of the movable mold (703) is provided with an inclined surface, and the movable mold (703) is adapted to the front mold core (902).

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