Injection mold convenient to discharge

Abstract

The utility model discloses an injection mold convenient for blanking, which relates to the technical field of injection molds and comprises an upper mold frame and a lower mold frame, an upper mold is fixedly mounted on the bottom surface of the upper mold frame, an injection port penetrating through the upper mold is arranged on the top surface of the upper mold frame, a lower mold is fixedly mounted on the top surface of the lower mold frame, and the upper mold frame is connected with the lower mold frame through a guide component. An auxiliary demolding structure is arranged on the bottom face of the lower mold frame, a mold assembly is arranged on the inner wall of the lower mold, a fixing assembly is arranged in the lower mold, and a demolding assembly is arranged on the side face of the inner wall of the lower mold. After injection molding and cooling molding, the air cylinder can drive the jacking column to ascend, the upper mold is jacked to be loose, a molded part is separated from the upper mold, then the electromagnet is closed, the sealing valve of the air conveying pipe is opened, the air pressure of a cavity formed by the bottom face of the mold plate and the lower mold is increased through the small booster pump, and the mold plate can ascend under the influence of the air pressure; and the formed part can be loosened and separated from the lower die, so that blanking is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold which is convenient for material cutting. Background Art

[0002] An injection mold is a tool for producing plastic products. It is also a tool that gives plastic products a complete structure and precise dimensions. Injection molding is a processing method used in mass production of certain parts with complex shapes. Specifically, it refers to the process of injecting heated and melted plastic into the mold cavity under high pressure by an injection molding machine, and obtaining a molded product after cooling and solidification.

[0003] In existing injection molding operations, the upper mold of the movable mold and the lower mold of the fixed mold are generally overlapped by hoisting or hydraulic mechanisms, and an injection cavity is formed between the two mold cavities. After the injection molding is completed, the upper mold and the lower mold are separated to take and unload the material. However, during the injection molding operation, the upper mold and the lower mold fit too tightly, and the staff needs to knock from the outside to separate the upper mold and the lower mold, which makes unloading inconvenient and reduces work efficiency. Therefore, improvement is needed. Utility Model Content

[0004] Technical issues solved

[0005] The purpose of the utility model is to make up for the deficiencies of the prior art and provide an injection mold that is convenient for material removal.

[0006] Technical Solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an injection mold for easy material discharge, comprising an upper mold frame and a lower mold frame, the bottom surface of the upper mold frame is fixedly mounted with an upper mold, the top surface of the upper mold frame is penetrated by an injection port and the top surface of the lower mold frame is fixedly mounted with a lower mold, the upper mold frame is connected to the lower mold frame through a guide assembly, the bottom surface of the lower mold frame is provided with an auxiliary demoulding assembly, the inner wall of the lower mold is provided with a mold assembly, the interior of the lower mold is provided with a fixing assembly, and the inner wall side surface of the lower mold is provided with a demoulding assembly;

[0008] The demoulding component comprises an air pipe and a small booster pump, and the auxiliary demoulding component comprises a base, a cylinder and a top column.

[0009] As mentioned above, the guide assembly includes a guide cylinder and a guide column. Holes are respectively opened at the four ends of the top surface of the upper mold frame, and the guide cylinder is fixedly installed on the inner wall of the hole. An opening is penetrated through the top surface of the guide cylinder. Guide columns are respectively fixedly installed at the four ends of the top surface of the lower mold frame. One end of the guide column passes through the top surface opening of the guide cylinder and fits with the inner wall of the guide cylinder.

[0010] As mentioned above, the four ends of the bottom surface of the upper mold frame are respectively fixedly connected with buffer springs, and one end of the buffer spring is fixedly connected to the top surface of the lower mold frame.

[0011] As mentioned above, the mold assembly includes an adsorption frame and a template. The adsorption frame is fixedly installed on the lower end of the inner wall of the lower mold. The adsorption frame is a metal frame. The template is placed on the top surface of the adsorption frame. The template is a metal plate with a convex mold on the top surface. The template is fitted with the inner wall of the lower mold.

[0012] As mentioned above, the fixing assembly includes an electromagnet and a mounting cavity. The lower mold is provided with a mounting cavity inside, and the electromagnet is fixedly mounted on the inner wall of the mounting cavity.

[0013] As mentioned above, a mounting opening is provided through the front side of the inner wall of the lower mold, and an air pipe is fixedly installed on the inner wall of the mounting opening, a sealing valve is fixedly installed at one end of the air pipe, and a small booster pump is connected to one end of the sealing valve of the air pipe.

[0014] As mentioned above, a base is fixedly installed on the bottom surface of the lower mold frame, and cylinders are fixedly installed on both sides of the inner wall of the base. The four ends of the top surface of the inner wall of the base are respectively penetrated with holes, and the holes penetrate the lower mold frame and the lower mold. The top surface of the movable rod of the cylinder is fixedly connected with a top column, and the four ends of the outer edge of the bottom surface of the upper mold are respectively provided with protrusions, and the protrusions fit with the holes on the top surface of the lower mold.

[0015] Beneficial effects:

[0016] Compared with the prior art, the injection mold that is easy to cut has the following beneficial effects:

[0017] 1. The utility model arranges a template, an adsorption frame, an electromagnet, an air pipe, a small booster pump, an air cylinder and a push column, so that the template can be placed on the top surface of the adsorption frame on the inner wall of the lower mold, so that it and the lower mold form a complete mold cavity, and then the template can be fixed on the adsorption frame by turning on the electromagnet, and injection molding is performed at this time. After injection molding and cooling molding, the push column can be driven to rise by the air cylinder to loosen the upper mold and separate the molded part from the upper mold, and then the electromagnet is closed, and the sealing valve of the air pipe is opened, and the air pressure of the cavity formed by the bottom surface of the template and the lower mold is increased by a small booster pump, so that the template can rise under the influence of the air pressure, and the molded part can be loosened and separated from the lower mold, thereby facilitating material unloading.

[0018] 2. The utility model provides guide posts, guide cylinders and buffer springs so that when the mold is closed by the hydraulic device, the guide cylinder can move on the surface of the guide posts, thereby preventing the upper and lower molds from shifting when closed. At the same time, the buffer spring can prevent the hydraulic device from causing excessive impact and causing damage to the guide posts or guide cylinders.

[0019] Other advantages, objectives and features of the present invention will be described in the following description to some extent, and will be apparent to those skilled in the art based on the following examination and study, or may be taught from the practice of the present invention to some extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the lower mold of the utility model;

[0022] Figure 3 It is a schematic diagram of the cross-sectional side view of the lower mold of the utility model;

[0023] Figure 4 It is a schematic diagram of the base structure of the utility model.

[0024] In the figure: 1. upper mold frame; 2. lower mold frame; 3. upper mold; 4. lower mold; 5. guide column; 6. guide cylinder; 7. buffer spring; 8. template; 9. adsorption frame; 10. electromagnet; 11. installation cavity; 12. air pipe; 13. small booster pump; 14. cylinder; 15. top column; 16. base. 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] like Figure 1-4 As shown, the utility model provides a technical solution: an injection mold for easy material discharge, comprising an upper mold frame 1 and a lower mold frame 2, an upper mold 3 is fixedly installed on the bottom surface of the upper mold frame 1, an injection port is provided on the top surface of the upper mold frame 1 penetrating the upper mold 3, a lower mold 4 is fixedly installed on the top surface of the lower mold frame 2, the upper mold frame 1 is connected to the lower mold frame 2 through a guide assembly, an auxiliary demoulding assembly is provided on the bottom surface of the lower mold frame 2, a mold assembly is provided on the inner wall of the lower mold 4, a fixing assembly is provided inside the lower mold 4, and a demoulding assembly is provided on the inner wall side of the lower mold 4;

[0027] The demoulding assembly includes an air pipe 12 and a small booster pump 13 , and the auxiliary demoulding assembly includes a base 16 , a cylinder 14 and a top column 15 .

[0028] According to the overall structure of the device, after the base 16 is fixedly installed on the workbench, the template 8 is placed on the top surface of the adsorption frame 9 on the inner wall of the lower mold 4, so that it and the lower mold 4 form a complete mold cavity, and then the template 8 can be fixed on the adsorption frame 9 by turning on the electromagnet 10, and the upper mold frame 1 is driven downward by the hydraulic device to close the upper mold 3 and the lower mold 4. When closing the mold, the guide cylinder 6 can move on the surface of the guide column 5, so as to prevent the upper mold 3 and the lower mold 4 from deviating when closing the mold. At the same time, the setting of the buffer spring 7 can prevent the hydraulic device from In case that the guide column 5 or the guide cylinder 6 is damaged due to excessive impact, injection is performed through the injection hole of the upper mold frame 1 after the mold is closed. After the injection and cooling molding are completed, the cylinder 14 drives the push column 15 to rise, loosens the upper mold 3, separates the molded part from the upper mold 3, and then closes the electromagnet 10, opens the sealing valve of the air supply pipe 12, and increases the air pressure of the cavity formed by the bottom surface of the template 8 and the lower mold 4 through the small booster pump 13, so that the template 8 can rise under the influence of the air pressure, and the molded part can be loosened and separated from the lower mold 4, thereby facilitating material unloading.

[0029] like Figure 1 As shown, the guide assembly includes a guide cylinder 6 and a guide column 5. Holes are respectively opened at the four ends of the top surface of the upper mold frame 1, and the guide cylinder 6 is fixedly installed on the inner wall of the hole. An opening is set through the top surface of the guide cylinder 6. Guide columns 5 are respectively fixedly installed at the four ends of the top surface of the lower mold frame 2. One end of the guide column 5 passes through the top surface opening of the guide cylinder 6 and fits with the inner wall of the guide cylinder 6. Buffer springs 7 are respectively fixedly connected to the four ends of the bottom surface of the upper mold frame 1, and one end of the buffer spring 7 is fixedly connected to the top surface of the lower mold frame 2.

[0030] By setting the guide cylinder 6, guide column 5 and buffer spring 7, when the mold is closed, the guide cylinder 6 can move on the surface of the guide column 5, so as to prevent the upper mold 3 and the lower mold 4 from shifting when the mold is closed. At the same time, the setting of the buffer spring 7 can prevent the hydraulic device from having excessive impact and causing damage to the guide column 5 or the guide cylinder 6. After the mold is closed, injection molding is performed through the injection hole of the upper mold frame 1.

[0031] like Figure 2-3 As shown, the mold assembly includes an adsorption frame 9 and a template 8. The adsorption frame 9 is fixedly installed on the lower end of the inner wall of the lower mold 4. The adsorption frame 9 is a metal frame. The template 8 is placed on the top surface of the adsorption frame 9. The template 8 is a metal plate with a convex mold on the top surface. The template 8 is fitted with the inner wall of the lower mold 4. The fixed assembly includes an electromagnet 10 and an installation cavity 11. The installation cavity 11 is opened inside the lower mold 4, and the electromagnet 10 is fixedly installed on the inner wall of the installation cavity 11.

[0032] By setting the adsorption frame 9, template 8, electromagnet 10 and installation cavity 11, before closing the mold, the template 8 is placed on the top surface of the adsorption frame 9 on the inner wall of the lower mold 4, so that it and the lower mold 4 form a complete mold cavity, and then the template 8 can be fixed on the adsorption frame 9 by turning on the electromagnet 10.

[0033] like Figure 2-4 As shown, an installation port is provided through the front of the inner wall of the lower mold 4, and an air pipe 12 is fixedly installed on the inner wall of the installation port, a sealing valve is fixedly installed at one end of the air pipe 12, and a small booster pump 13 is connected to one end of the sealing valve of the air pipe 12, a base 16 is fixedly installed on the bottom surface of the lower mold frame 2, and cylinders 14 are fixedly installed on both sides of the inner wall of the base 16, and holes are respectively provided at four ends of the top surface of the inner wall of the base 16, and the holes penetrate the lower mold frame 2 and the lower mold 4, and a top column 15 is fixedly connected to the top surface of the movable rod of the cylinder 14, and bumps are respectively provided at the four ends of the outer edge of the bottom surface of the upper mold 3, and the bumps fit with the holes on the top surface of the lower mold 4.

[0034] By means of the air pipe 12, small booster pump 13, base 16, cylinder 14 and push column 15, after the injection molding and cooling molding are completed, the push column 15 is driven to rise by the cylinder 14 to loosen the upper mold 3 and separate the molded part from the upper mold 3, then the electromagnet 10 is closed, and the sealing valve of the air pipe 12 is opened, and the air pressure of the cavity formed by the bottom surface of the template 8 and the lower mold 4 is increased by the small booster pump 13, so that the template 8 can rise under the influence of the air pressure, and the molded part can be loosened and separated from the lower mold 4, thereby facilitating material unloading.

[0035] Working principle: After the base 16 is fixedly installed on the workbench, the template 8 is placed on the top surface of the adsorption frame 9 on the inner wall of the lower mold 4, so that it and the lower mold 4 form a complete mold cavity, and then the template 8 can be fixed on the adsorption frame 9 by turning on the electromagnet 10, and the upper mold frame 1 is driven downward by the hydraulic device to allow the upper mold 3 and the lower mold 4 to be molded together. When the molds are closed, the guide cylinder 6 can move on the surface of the guide column 5. After the molds are closed, injection molding is carried out through the injection hole of the upper mold frame 1. When the injection molding and cooling molding are completed, the cylinder 14 drives the top column 15 to rise, the upper mold 3 is loosened, and the molded part is separated from the upper mold 3. Then the electromagnet 10 is closed, and the sealing valve of the air supply pipe 12 is opened. The air pressure of the cavity formed by the bottom surface of the template 8 and the lower mold 4 is increased by the small booster pump 13, so that the template 8 can rise under the influence of the air pressure, and the molded part can be loosened and separated from the lower mold 4 for unloading.

[0036] It should be noted that, in this article, the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model; the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "fixed", "installed", "connected", and "connected" should be understood in a broad sense. For example, "installed" can be a fixed connection, a detachable connection, or an integral connection; "connected" can be a mechanical connection or an electrical connection; "connected" can be a direct connection, an indirect connection through an intermediate medium, or a connection between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0037] 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. An injection mold for easy blanking, comprising an upper mold frame (1) and a lower mold frame (2), characterized in that: An upper mold (3) is fixedly mounted on the bottom surface of the upper mold frame (1), an injection port is provided on the top surface of the upper mold frame (1) penetrating the upper mold (3), a lower mold (4) is fixedly mounted on the top surface of the lower mold frame (2), the upper mold frame (1) is connected to the lower mold frame (2) via a guide assembly, an auxiliary demoulding assembly is provided on the bottom surface of the lower mold frame (2), a mold assembly is provided on the inner wall of the lower mold (4), a fixing assembly is provided inside the lower mold (4), and a demoulding assembly is provided on the inner wall side of the lower mold (4); The demoulding assembly comprises an air pipe (12) and a small booster pump (13); a mounting port is provided through the front of the inner wall of the lower mold (4); an air pipe (12) is fixedly installed on the inner wall of the mounting port; a sealing valve is fixedly installed at one end of the air pipe (12); and a small booster pump (13) is connected to one end of the sealing valve of the air pipe (12); the auxiliary demoulding assembly comprises a base (16), a cylinder (14) and a top column (15); the lower mold frame (2 ) is fixedly mounted on the bottom surface of the upper mold (3), and cylinders (14) are fixedly mounted on both sides of the inner wall of the base (16). Four ends of the top surface of the inner wall of the base (16) are respectively penetrated by holes, and the holes penetrate the lower mold frame (2) and the lower mold (4). The top surface of the movable rod of the cylinder (14) is fixedly connected to a top column (15). The four ends of the outer edge of the bottom surface of the upper mold (3) are respectively provided with protrusions, and the protrusions fit with the holes on the top surface of the lower mold (4).

2. The injection mold for easy blanking according to claim 1, characterized in that: The guide assembly comprises a guide cylinder (6) and a guide column (5); holes are respectively provided at the four ends of the top surface of the upper mold frame (1), and the guide cylinder (6) is fixedly installed on the inner wall of the hole; an opening is provided through the top surface of the guide cylinder (6); the guide columns (5) are respectively fixedly installed at the four ends of the top surface of the lower mold frame (2); one end of the guide column (5) passes through the top surface opening of the guide cylinder (6) and fits with the inner wall of the guide cylinder (6).

3. The injection mold for easy blanking according to claim 1, characterized in that: The four ends of the bottom surface of the upper mold frame (1) are respectively fixedly connected with buffer springs (7), and one end of the buffer spring (7) is fixedly connected to the top surface of the lower mold frame (2).

4. The injection mold for easy blanking according to claim 1, characterized in that: The mold assembly comprises an adsorption frame (9) and a template (8); the adsorption frame (9) is fixedly mounted on the lower end of the inner wall of the lower mold (4); the adsorption frame (9) is a metal frame; the template (8) is placed on the top surface of the adsorption frame (9); the template (8) is a metal plate with a convex mold on the top surface; the template (8) is fitted with the inner wall of the lower mold (4).

5. The injection mold for easy blanking according to claim 1, characterized in that: The fixing assembly comprises an electromagnet (10) and a mounting cavity (11); the lower mold (4) is provided with the mounting cavity (11), and the inner wall of the mounting cavity (11) is fixedly mounted with the electromagnet (10).

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