Improved injection mold

Abstract

The utility model discloses an improved injection mold which comprises a top mold body, and a bottom mold body is arranged at the bottom of the top mold body; the top mold body comprises a top mold supporting plate, an upper mold core is arranged at the bottom of the top mold supporting plate, two vent holes are symmetrically formed in the upper mold core, and through the design that the vent holes are formed in the upper mold core and a material pushing rod is arranged in the lower mold core, a formed part is separated from an injection molding device, the discharging speed is increased, air is blown again through the vent holes after discharging, and therefore the injection molding efficiency is improved. Chippings or dust attached to the upper mold core and the lower mold core are blown away to prevent the chippings or dust from influencing the appearance of a formed part, so that the forming effect is enhanced conveniently, and the injection molding size precision is improved; by means of the design that the high-pressure gas generating device is arranged on the bottom die support, gas is supplied to the gas inlet pipe, the air cylinder and the material pushing rod at the same time, a formed part can be separated from the upper cavity, meanwhile, the air cylinder drives a product to be further formed through the output end limiting block, the material pushing rod can ascend under the action of air pressure, multiple functions are achieved, and device integration is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of injection mold design, and particularly relates to an improved injection mold. Background Art

[0002] An injection mold is a tool for manufacturing plastic products. It injects molten plastic material into the mold cavity and forms the required shape after cooling. The design and manufacture of injection molds are complex processes that require comprehensive consideration of multiple factors such as materials, processes, costs, and production efficiency. Through reasonable design and careful manufacture, the service life and production efficiency of the mold can be improved, production costs can be reduced, and product quality can be improved.

[0003] After the existing injection mold completes injection, the formed part is easily stuck in the cavity and difficult to eject. The existing mold lacks a design that can promote the separation of the formed part from the upper and lower cavities, which easily affects the forming effect. When the injection mold is opened, dust is easily introduced into the cavity, which also easily affects the forming effect. At the same time, multiple power sources need to operate simultaneously when the device works, and the functions of the device are relatively scattered, lacking integration. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an improved injection mold to solve the problems existing in the above background art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An improved injection mold includes a top mold body, and a bottom mold body is arranged at the bottom of the top mold body; the top mold body includes a top mold support plate, an upper core is arranged at the bottom of the top mold support plate, two ventilation holes are symmetrically arranged on the upper core, two air inlet pipes are symmetrically arranged on one side of the top mold support plate, and a number of air inlet valves are evenly arranged on the air inlet pipes; the bottom mold body includes a bottom mold support, a number of cylinders are installed on the outside of the bottom mold support, a number of connecting pipes are arranged on the cylinders, a high-pressure gas generating device is arranged at the end of the connecting pipes, an air outlet valve is installed on the high-pressure gas generating device, and a number of push rods are arranged at the top of the high-pressure gas generating device.

[0007] Further: an injection port is arranged at the bottom of the top mold support plate, and four guide rods are evenly arranged at the four corners of the top mold support plate.

[0008] Further: an injection seat is fixedly arranged at the top of the bottom mold support, and a lower core is arranged on the injection seat.

[0009] Further: the air outlet valve is connected to the air inlet valve through a pipeline.

[0010] Further: The high-pressure gas generating device is bolted to the bottom die support, and the guide rod is slidably connected to the bottom die support.

[0011] Further: The pushing rod is slidably connected to the injection molding base.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. Through the design of arranging vent holes on the upper core and a pushing rod in the lower core, the formed part is separated from the injection molding device, the discharging speed is increased, and after discharging, the vent holes blow air again to blow away the debris or dust adhering to the upper core and the lower core, preventing it from affecting the appearance of the formed part, facilitating enhancing the forming effect, and improving the injection molding dimensional accuracy;

[0014] 2. Through the design of arranging a high-pressure gas generating device on the bottom die support, simultaneously supplying gas to the air inlet pipe, the air cylinder and the pushing rod, the formed part can be separated from the upper cavity, and at the same time, the air cylinder drives the product to be further formed through the output end limiting block, and the pushing rod can rise under the action of air pressure, realizing multiple functions and improving the integration of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is the external view schematic diagram of an improved injection mold according to the present utility model;

[0017] Figure 2 is the exploded view of an improved injection mold according to the present utility model;

[0018] Figure 3 is the bottom view of the top die body of an improved injection mold according to the present utility model;

[0019] Figure 4 is the internal structure schematic diagram of an improved injection mold according to the present utility model.

[0020] In the reference numerals of the drawings: 1. Top die body; 101. Top die support plate; 102. Injection port; 103. Upper core; 104. Vent hole; 105. Guide rod; 106. Air inlet pipe; 107. Air inlet valve; 2. Bottom die body; 201. Bottom die support; 202. Injection molding base; 203. Lower core; 204. Air cylinder; 205. Connecting pipe; 206. High-pressure gas generating device; 207. Air outlet valve; 208. Pushing rod. Detailed implementation manners

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0022] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1 - 4 , an improved injection mold, including a top mold body 1, and a bottom mold body 2 is arranged at the bottom of the top mold body 1.

[0025] In this embodiment: The top mold body 1 includes a top mold support plate 101. At the bottom of the top mold support plate 101, there is an upper core 103. Two vent holes 104 are symmetrically arranged on the upper core 103. On one side of the top mold support plate 101, two inlet pipes 106 are symmetrically arranged. A number of intake valves 107 are evenly arranged on the inlet pipes 106. At the bottom of the top mold support plate 101, there is an injection port 102. Four guide rods 105 are evenly arranged at the four corners of the top mold support plate 101. During the injection process, the top mold support plate 101 is attached to the bottom mold support 201 through the guide rods 105 to complete mold closing. At this time, the upper core 103 and the lower core 203 located at the top of the injection mold base 202 form a cavity. The injection raw material is injected into the cavity through the injection port 102 to realize injection molding. After injection, the top mold support plate 101 is separated from the bottom mold support 201. During the next processing, the vent holes 104 blow air again to blow away the debris or dust attached to the upper core 103 and the lower core 203, preventing it from affecting the appearance of the molded part and facilitating the improvement of the processing effect;

[0026] In this embodiment: The bottom mold body 2 includes a bottom mold support 201. A number of cylinders 204 are installed outside the bottom mold support 201. A number of connecting pipes 205 are arranged on the cylinders 204. At the end of the connecting pipes 205, there is a high-pressure gas generating device 206. An air outlet valve 207 is installed on the high-pressure gas generating device 206. A number of push rods 208 are arranged at the top of the high-pressure gas generating device 206. The injection mold base 202 is fixedly arranged at the top of the bottom mold support 201. A lower core 203 is arranged on the injection mold base 202. The air outlet valve 207 is connected to the intake valve 107 through a pipeline. The high-pressure gas generating device 206 is bolted to the bottom mold support 201. The guide rod 105 is slidably connected to the bottom mold support 201. The push rod 208 is slidably connected to the injection mold base 202. The high-pressure gas generating device 206 generates high-pressure gas, which is transported into the intake valve 107 on the top mold body 1 through the air outlet valve 207, then moves into the top mold support plate 101 through the inlet pipe 106, and finally is discharged downward along the vent holes 104 to blow the molded part to separate it from the upper core 103. At the same time, the high-pressure gas generating device 206 also drives the cylinders 204 to work through the connecting pipes 205. The cylinders 204 drive the product to be further formed through the output end limit block. Finally, the high-pressure gas generating device 206 pushes the push rod 208 upward to move it out of the injection mold base 202 and eject the molded part from the bottom, facilitating discharging.

[0027] Working principle: During the injection molding process, the top die support plate 101 is attached to the bottom die support 201 through the guide rod 105 to complete the mold closing. At this time, the upper core 103 and the lower core 203 located at the top of the injection molding seat 202 form a cavity. The injection molding raw material is injected into the cavity through the injection port 102 to achieve injection molding. After injection molding, the top die support plate 101 is separated from the bottom die support 201. At this time, the high-pressure gas generating device 206 generates high-pressure gas, which is transported into the intake valve 107 on the top die body 1 through the air outlet valve 207, then moves into the top die support plate 101 through the intake pipe 106, and finally is discharged downward along the ventilation hole 104, blowing the molded part to separate it from the upper core 103, improving the discharging speed. At the same time, the high-pressure gas generating device 206 also drives the cylinder 204 to work through the connecting pipe 205. The cylinder 204 drives the product to be further formed through the output end limit block. Finally, the high-pressure gas generating device 206 pushes the push rod 208 upward, causing it to move out of the injection molding seat 202 and eject the molded part from the bottom, facilitating discharging. During the next processing, the ventilation hole 104 blows again to blow away the debris or dust attached to the upper core 103 and the lower core 203, preventing it from affecting the appearance of the molded part and facilitating improving the processing effect.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An improved injection mold, characterized in that: It includes a top die body (1), and a bottom die body (2) is arranged at the bottom of the top die body (1). The top die body (1) includes a top die support plate (101). An upper core (103) is arranged at the bottom of the top die support plate (101). Two vent holes (104) are symmetrically arranged on the upper core (103). Two inlet pipes (106) are symmetrically arranged on one side of the top die support plate (101). A number of intake valves (107) are evenly arranged on the inlet pipes (106). The bottom die body (2) includes a bottom die support (201). A number of cylinders (204) are installed outside the bottom die support (201). A number of connecting pipes (205) are arranged on the cylinders (204). A high-pressure gas generating device (206) is arranged at the end of the connecting pipe (205). An air outlet valve (207) is installed on the high-pressure gas generating device (206). A number of push rods (208) are arranged at the top of the high-pressure gas generating device (206).

2. An improved injection mold according to claim 1, characterized in that: An injection port (102) is arranged at the bottom of the top die support plate (101). Four guide rods (105) are evenly arranged at the four corners of the top die support plate (101).

3. An improved injection mold according to claim 1, characterized in that: An injection seat (202) is fixedly arranged at the top of the bottom die support (201). A lower core (203) is arranged on the injection seat (202).

4. An improved injection mold according to claim 1, characterized in that: The air outlet valve (207) is connected to the intake valve (107) through a pipeline.

5. An improved injection mold according to claim 2, characterized in that: The high-pressure gas generating device (206) is bolted to the bottom die support (201), and the guide rod (105) is slidably connected to the bottom die support (201).

6. An improved injection mold according to claim 3, characterized in that: The push rod (208) is slidably connected to the injection seat (202).

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