Injection mold convenient to demold

Abstract

The utility model relates to the technical field of injection molds, in particular to an injection mold convenient to demold, which comprises a bottom plate, a lower mold is arranged on the upper end face of the bottom plate, four positioning columns are fixedly connected to the upper end face of the bottom plate, an upper mold is slidably connected to the outer walls of the four positioning columns, the lower mold is composed of a front mold and a rear mold, and the front mold and the rear mold are arranged on the bottom plate. The left side of the interior of the bottom plate is rotationally connected with a forward and reverse screw rod, a motor with the output end fixedly connected with the forward and reverse screw rod is installed on the front end face of the bottom plate, and the outer wall of the forward and reverse screw rod is in threaded connection with the front mold and the rear mold. The front mold and the rear mold are rapidly separated, a formed product is supported through the supporting plate, and therefore the demolding efficiency can be improved by arranging a separated demolding structure of the front mold and the rear mold, and meanwhile the mold product is protected against damage.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molds, in particular to an injection mold facilitating demolding. Background Technique

[0002] An injection mold is a tool for producing plastic products and also a tool for endowing plastic products with a complete structure and precise dimensions; injection molding is a processing method used in mass production of some parts with complex shapes. Although the structures of injection molds may vary greatly due to different plastic varieties and properties, shapes and structures of plastic products, types of injection machines, etc., the basic structures are the same.

[0003] An injection mold generally consists of a moving mold, a fixed mold, and a driving device for driving the moving mold to press against or lift away from the fixed mold. Before injection molding operation, the moving mold is pressed against the fixed mold through the driving device, and then the moving mold and the fixed mold are fixedly connected by bolts. Then, the molten plastic heated by the injection machine is injected into the cavity between the moving mold and the fixed mold under high pressure, and the molded product is obtained after cooling and solidification.

[0004] At present, during the demolding process of injection molds, most of them are demolded manually, and some push the molded product up from below the lower mold through a push plate. This method is likely to damage the molded product and has low demolding efficiency. Therefore, it is necessary to propose an injection mold facilitating demolding to solve the above problems. Content of the Utility Model

[0005] The purpose of the utility model is to provide an injection mold facilitating demolding, which can improve the demolding efficiency by setting a split demolding structure and protect the molded product from damage at the same time.

[0006] To achieve the above purpose, the utility model provides the following technical solution: An injection mold facilitating demolding, including a bottom plate, on the upper end surface of the bottom plate is provided a lower mold, four positioning columns are fixedly connected to the upper end surface of the bottom plate, a top plate is fixedly connected to the upper end surfaces of the four positioning columns, an upper mold is slidably connected to the outer walls of the four positioning columns, a cylinder with an output end fixedly connected to the upper mold is installed on the upper end surface of the top plate, the lower mold is composed of a front mold and a rear mold, a positive and negative lead screw is rotatably connected to the left side inside the bottom plate, a motor with an output end fixedly connected to the positive and negative lead screw is installed on the front end surface of the bottom plate, and the outer wall of the positive and negative lead screw is threadedly connected to the front mold and the rear mold;

[0007] A groove is opened in the middle of the upper end surface of the bottom plate, a support plate is arranged inside the groove, and an elastic component is installed between the lower end surface of the support plate and the groove.

[0008] In order to ensure the sealing between the front mold and the rear mold, as an optimization of the injection mold for easy demolding of the present utility model, two installation grooves are provided on the side of the front mold close to the rear mold, two installation blocks matching the installation grooves are fixedly connected to the side of the rear mold close to the front mold, and sealing gaskets are installed on the inner walls of the two installation grooves.

[0009] In order to guide the front mold and the rear mold, as an optimization of the injection mold for easy demolding of the present utility model, guide plates are fixedly connected to both the left and right sides of the front mold and the rear mold, vertical rods are fixedly connected to both the left and right sides of the upper end surface of the bottom plate, and a guide post slidably connected to the guide plate is fixedly connected to the middle of the upper end surfaces of the two vertical rods.

[0010] In order to limit the front mold and the rear mold, as an optimization of the injection mold for easy demolding of the present utility model, a guide rod slidably connected to the front mold and the rear mold is installed inside the right side of the bottom plate.

[0011] In order to protect the molded product, as an optimization of the injection mold for easy demolding of the present utility model, a rubber pad is installed on the upper end surface of the support plate.

[0012] In order to enable the normal operation of the cylinder and the motor, as an optimization of the injection mold for easy demolding of the present utility model, a controller is installed on the upper end surface of the top plate, and the cylinder and the motor are both electrically connected to the controller.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] In the present utility model, first, when demolding is required, the front mold and the rear mold are moved in a direction away from each other, and the front mold moves forward to achieve the rapid separation of the front mold and the rear mold. The molded product is lifted by the support plate. Furthermore, by providing a split demolding structure for the front mold and the rear mold, the demolding efficiency can be improved, and at the same time, the molded product can be protected from damage. Description of the Drawings

[0015] Figure 1 It is the overall structure diagram of the present utility model;

[0016] Figure 2 It is the side view structure diagram of the lower mold of the present utility model;

[0017] Figure 3 It is the top view structure diagram of the lower mold of the present utility model.

[0018] In the figure: 1. Bottom plate; 101. Positioning column; 102. Upper mold; 103. Top plate; 104. Cylinder; 2. Lower mold; 201. Front mold; 202. Rear mold; 203. Installation groove; 204. Installation block; 205. Guide plate; 3. Positive and negative lead screw; 301. Motor; 302. Guide rod; 4. Groove; 401. Support plate; 402. Elastic component; 5. Guide post; 6. Controller. Detailed implementation manner

[0019] Please refer to Figures 1 to 3 , an injection mold facilitating demolding, including a bottom plate 1. A lower mold 2 is arranged on the upper end surface of the bottom plate 1. Four positioning columns 101 are fixedly connected to the upper end surface of the bottom plate 1. A top plate 103 is fixedly connected to the upper end surfaces of the four positioning columns 101. An upper mold 102 is slidably connected to the outer walls of the four positioning columns 101. A cylinder 104 with an output end fixedly connected to the upper mold 102 is installed on the upper end surface of the top plate 103. The lower mold 2 is composed of a front mold 201 and a rear mold 202. A positive and negative lead screw 3 is rotatably connected to the left side inside the bottom plate 1. A motor 301 with an output end fixedly connected to the positive and negative lead screw 3 is installed on the front end surface of the bottom plate 1. The outer wall of the positive and negative lead screw 3 is threadedly connected to the front mold 201 and the rear mold 202;

[0020] A groove 4 is opened in the middle of the upper end surface of the bottom plate 1. A support plate 401 is arranged inside the groove 4. An elastic component 402 is installed between the lower end surface of the support plate 401 and the groove 4.

[0021] In this embodiment: When demolding is required, the motor 301 can be started to drive the positive and negative lead screw 3 to rotate, prompting the front mold 201 and the rear mold 202 to move in a direction away from each other. The front mold 201 moves forward and the rear mold 202 moves backward, thereby realizing the rapid separation of the front mold 201 and the rear mold 202. When the front mold 201 and the rear mold 202 are separated and the support plate 401 is exposed, the support plate 401 can pop out under the elastic force of the elastic component 402 to lift the molded product, avoiding the dropping of the molded product after the separation of the front mold 201 and the rear mold 202. Furthermore, by setting the split demolding structure of the front mold 201 and the rear mold 202, the demolding efficiency can be improved, and at the same time, the molded product can be protected from damage.

[0022] As a technical optimization scheme of the present utility model, two installation grooves 203 are opened on the side of the front mold 201 close to the rear mold 202. Two installation blocks 204 matching the installation grooves 203 are fixedly connected to the side of the rear mold 202 close to the front mold 201. Sealing gaskets are installed on the inner walls of the two installation grooves 203.

[0023] In this embodiment: By inserting the installation blocks 204 into the installation grooves 203, the front mold 201 and the rear mold 202 can be closed, and the sealing performance between the front mold 201 and the rear mold 202 can be ensured through the sealing gaskets.

[0024] As a technical optimization solution of the present utility model, guide plates 205 are fixedly connected to the left and right sides of the front mold 201 and the rear mold 202, vertical rods are fixedly connected to the left and right sides of the upper end surface of the bottom plate 1, and a guide post 5 slidably connected to the guide plate 205 is fixedly connected to the middle of the upper end surfaces of the two vertical rods.

[0025] In this embodiment: when the front mold 201 moves forward and the rear mold 202 moves backward, the guide plate 205 can be driven to stably move on the outer wall of the guide post 5, thereby guiding the front mold 201 and the rear mold 202.

[0026] As a technical optimization solution of the present utility model, a guide rod 302 slidably connected to the front mold 201 and the rear mold 202 is installed inside the right side of the bottom plate 1.

[0027] In this embodiment: the front mold 201 and the rear mold 202 can be limited by the guide rod 302 to make the front mold 201 and the rear mold 202 move stably.

[0028] As a technical optimization solution of the present utility model, a rubber pad is installed on the upper end surface of the support plate 401.

[0029] In this embodiment: the formed product can be protected by the rubber pad.

[0030] As a technical optimization solution of the present utility model, a controller 6 is installed on the upper end surface of the top plate 103, and the air cylinder 104 and the motor 301 are both electrically connected to the controller 6.

[0031] In this embodiment: the air cylinder 104 and the motor 301 can work normally through the controller 6.

[0032] Working principle: First, the upper mold 102 is pushed down by the air cylinder 104 to be clamped with the lower mold 2. After clamping and forming, the upper mold 102 can be lifted under the action of the air cylinder 104. When demolding is required, the motor 301 can be started to drive the forward and reverse lead screw 3 to rotate, prompting the front mold 201 and the rear mold 202 to move in opposite directions, while driving the guide plate 205 to slide on the outer wall of the guide post 5, prompting the front mold 201 to move forward and the rear mold 202 to move backward, thereby realizing the rapid separation of the front mold 201 and the rear mold 202. When the front mold 201 and the rear mold 202 are separated and the support plate 401 is exposed, the support plate 401 can pop out under the elastic force of the elastic component 402 to lift the formed product, preventing the formed product from falling after the front mold 201 and the rear mold 202 are separated. Therefore, by setting the split demolding structure of the front mold 201 and the rear mold 202, the demolding efficiency can be improved, and at the same time, the formed product can be protected from damage. When the front mold 201 and the rear mold 202 are clamped, the support plate 401 can be pressed down under the elastic force of the elastic component 402 to be located below the lower mold 2 and abut against the bottom end of the lower mold 2.

[0033] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. An injection mold facilitating demolding, comprising a bottom plate (1). An upper mold (2) is arranged on the upper end surface of the bottom plate (1). Four positioning columns (101) are fixedly connected to the upper end surface of the bottom plate (1). An upper plate (103) is fixedly connected to the upper end surfaces of the four positioning columns (101). An upper mold (102) is slidably connected to the outer walls of the four positioning columns (101). A cylinder (104) with an output end fixedly connected to the upper mold (102) is installed on the upper end surface of the upper plate (103), and it is characterized in that: The lower mold (2) is composed of a front mold (201) and a rear mold (202). A left - right screw rod (3) is rotatably connected inside the left side of the bottom plate (1). A motor (301) with an output end fixedly connected to the left - right screw rod (3) is installed on the front end face of the bottom plate (1). The outer wall of the left - right screw rod (3) is threadedly connected to the front mold (201) and the rear mold (202). A groove (4) is opened in the middle of the upper end face of the bottom plate (1). A support plate (401) is arranged inside the groove (4). An elastic component (402) is installed between the lower end face of the support plate (401) and the groove (4).

2. The injection mold facilitating demolding according to claim 1, characterized in that: Two installation grooves (203) are opened on one side of the front mold (201) close to the rear mold (202). Two installation blocks (204) matching the installation grooves (203) are fixedly connected to one side of the rear mold (202) close to the front mold (201). Sealing gaskets are installed on the inner walls of the two installation grooves (203).

3. The injection mold for facilitating demolding according to claim 1, characterized in that: Guide plates (205) are fixedly connected to both the left and right sides of the front mold (201) and the rear mold (202). Vertical rods are fixedly connected to both the left and right sides of the upper end face of the bottom plate (1). A guide post (5) slidably connected to the guide plate (205) is fixedly connected to the middle of the upper end faces of the two vertical rods.

4. An injection mold facilitating demolding according to claim 1, characterized in that: A guide rod (302) slidably connected to the front mold (201) and the rear mold (202) is installed on the right side inside the bottom plate (1).

5. The injection mold for facilitating demolding according to claim 1, wherein: A rubber pad is installed on the upper end face of the support plate (401).

6. The injection mold facilitating demolding according to claim 1, wherein: A controller (6) is installed on the upper end face of the top plate (103). Both the air cylinder (104) and the motor (301) are electrically connected to the controller (6).

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