A metal mold capable of rapid demolding

Abstract

This utility model discloses a metal mold capable of rapid demolding, relating to the field of mold technology. The utility model includes a female mold, a male mold, and a spraying assembly. The cavity of the female mold is fitted outside the core of the male mold. A set of piston tube channels is formed on the side of the male mold away from the core. A set of piston tubes is sleeved inside the piston tube channels, with the piston tubes passing through the closed ends of the piston tube channels. The outlet end of the spraying assembly is connected to the port of each piston tube channel on the side away from the male mold core. This utility model sprays a release agent into the piston tube channels via the spraying assembly, ultimately entering the mold cavity. By sliding a piston tube within the piston tube channels, the piston tube is pushed into the mold cavity during release agent spraying, causing the release agent spray to exit from the spray holes on the side wall of the piston tube and evenly coat the side of the male mold core and the inner wall of the female mold cavity, achieving rapid and automatic spraying of the release agent and improving the demolding efficiency of the metal mold.

Description

Technical Field

[0001] This utility model belongs to the field of mold technology, and in particular relates to a metal mold that can be quickly demolded. Background Technology

[0002] In the production of plastic products, plastic granules or powder are melted and injected into a metal mold. The molten plastic cools and solidifies in the cavity of the metal mold, and then ejected from the mold by ejector pins. When ejecting the plastic product from the mold, the ejector pins need to apply a certain demolding force, which is related to the side area of ​​the core. When the demolding force of the ejector pins is insufficient, repeated ejection is required. To ensure rapid demolding, a release agent is usually sprayed on the side of the core or cavity of the metal mold, thereby ensuring that the cooled and solidified plastic product can be demolded quickly. However, repeatedly spraying release agent on the cavity and core of the metal mold leads to low production efficiency.

[0003] To address these issues, we provide a metal mold that allows for rapid demolding. Utility Model Content

[0004] The purpose of this invention is to provide a metal mold that can be quickly demolded. By setting a spraying component on one side of the male mold and connecting the outlet end of the spraying component to the port of the piston tube channel, when the male mold and female mold are closed, the spraying component sprays the release agent into the piston tube channel and finally into the mold cavity. By sliding a piston tube inside the piston tube channel, the piston tube is pushed into the mold cavity when the release agent is sprayed, so that the release agent spray is sprayed out from the spray hole on the side wall of the piston tube and evenly coated on the side of the male mold core and the inner wall of the female mold cavity, realizing the rapid and automatic spraying of the release agent and improving the demolding efficiency of the metal mold.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a metal mold that can be quickly demolded, including a female mold, a male mold, and a spraying assembly. The cavity of the female mold is set outside the core of the male mold. A set of piston tube channels is opened on the side plate of the male mold away from the core. A set of piston tubes is sleeved inside the piston tube channels. A set of spray holes is opened through the side wall of the piston tubes. The end of the piston tube channel near the male mold core is closed. The end of the piston tube near the closed end of the piston tube channel is closed. The piston tube passes through the closed end of the piston tube channel. The end of the piston tube away from the closed end of the piston tube channel is open. The outlet end of the spraying assembly is at the port of each piston tube channel away from the male mold core.

[0006] A further feature of this invention is that the outer diameter of the piston tube is smaller than the inner diameter of the piston tube channel, a retaining spring flange is fixedly provided on the outer wall of the open end of the piston tube, the outer wall of the retaining spring flange is attached to the inner wall of the piston tube channel, and a tube spring is sleeved on the outer side of the piston tube, with the two ends of the tube spring respectively fixedly connected to the closed end face of the piston tube channel and the end face of the retaining spring flange.

[0007] A further feature of this invention is that a piston is slidably sleeved inside the piston tube, a piston spring is fixedly connected to one end of the piston, and the end of the piston spring away from the piston is fixedly connected to the inner top surface of the closed end of the piston tube.

[0008] A further feature of this invention is that an exhaust valve channel is provided at the end of the female mold away from the male mold, and an exhaust valve plug is slidably sleeved in the exhaust valve channel.

[0009] A further feature of this invention is that an air hole plug is fixedly provided at one end of the exhaust valve slide plug near the vaginal mold cavity, and an exhaust hole is opened through the closed end face of the exhaust valve channel near the vaginal mold cavity. The air hole plug is sleeved in the exhaust hole, and a set of vent holes are circumferentially arrayed around the air hole plug on the end face of the exhaust valve slide plug. A top spring clamp is fixedly sleeved inside the end of the exhaust valve channel away from the vaginal mold cavity.

[0010] A further feature of this invention is that a top valve spring is fitted inside the exhaust valve channel, and the two ends of the top valve spring are respectively fixedly connected to the end face of the top spring hoop and the end face of the exhaust valve slide plug.

[0011] A further feature of this invention is that the spray assembly includes a distribution ring pipe, a three-way pipe, and a mold release agent storage tank. A set of air inlets is fixedly installed in a circumferential array on one end of the distribution ring pipe. Each air inlet is fixedly connected to the end of each piston pipe channel away from the female mold. The side wall of the distribution ring pipe is connected to one end of the three-way pipe through a pipe. The outlet end of the mold release agent storage tank is connected to one end of the three-way pipe through a pipe. One end of the three-way pipe is connected to the outlet end of the air compressor.

[0012] This utility model has the following beneficial effects: This invention provides a spraying component on one side of the male mold, connecting the outlet end of the spraying component to the port of the piston tube channel. When the male mold and female mold are closed, the spraying component sprays the release agent into the piston tube channel, and finally into the mold cavity.

[0013] This invention achieves rapid and automatic spraying of the release agent by sliding a piston tube inside the piston tube channel. When the release agent is sprayed, the piston tube is pushed into the mold cavity, so that the release agent spray is sprayed out from the spray hole on the side wall of the piston tube and evenly coated on the side of the male mold core and the inner wall of the female mold cavity, thereby improving the demolding efficiency of metal molds. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the structure of a metal mold that can be quickly demolded.

[0016] Figure 2 This is a schematic diagram showing the disassembled piston tube and piston.

[0017] Figure 3 This is a sectional view of the female mold and the vent valve slide.

[0018] Figure 4 This is a schematic diagram of the exhaust valve slide.

[0019] Figure 5 This is an exploded view of the male mold and spray assembly.

[0020] The attached diagram lists the components represented by each number as follows: 1-Female mold, 101-Exhaust valve channel, 101a-Exhaust valve slide plug, 101a-1-Air hole plug, 101a-2-Vent hole, 101b-Exhaust hole, 101c-Top spring clamp, 101d-Top valve spring, 2-Male mold, 201-Piston tube channel, 202-Piston tube, 202a-Stop spring flange, 202b-Tube spring, 202c-Piston, 202c-1-Piston spring, 3-Spraying assembly, 301-Diverter ring pipe, 301a-Air inlet, 302-Tee pipe, 303-Mold release agent storage tank. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Example

[0022] Please see Figure 1 and Figure 2 This utility model is a metal mold for rapid demolding, including a female mold 1, a male mold 2, and a spraying component 3. By setting the spraying component 3 on one side of the male mold 2 and connecting the outlet end of the spraying component 3 to the port of the piston tube channel 201, when the male mold 2 and the female mold 1 are closed, the spraying component 3 sprays the release agent into the piston tube channel 201 and finally into the mold cavity. By sliding a piston tube 202 inside the piston tube channel 201, the piston tube 202 is pushed into the mold cavity when the release agent is sprayed, so that the release agent spray is sprayed out from the spray hole on the side wall of the piston tube 202 and evenly coated on the core side of the male mold 2 and the inner wall of the cavity of the female mold 1, realizing rapid and automatic spraying of the release agent and improving the demolding efficiency of the metal mold.

[0023] Specifically, the cavity cover of the female mold 1 is located outside the core of the male mold 2. A set of piston tube channels 201 is opened on the side plate of the male mold 2 away from the core. A set of piston tubes 202 is sleeved inside the piston tube channels 201. A set of spray holes is opened through the side wall of the piston tubes 202. The end of the piston tube channel 201 near the core of the male mold 2 is closed. The end of the piston tube 202 near the closed end of the piston tube channel 201 is closed. The piston tube 202 passes through the closed end of the piston tube channel 201. The end of the piston tube 202 away from the closed end of the piston tube channel 201 is open. The outlet end of the spray assembly 3 is located at the port of each piston tube channel 201 away from the core of the male mold 2.

[0024] Furthermore, the outer diameter of the piston tube 202 is smaller than the inner diameter of the piston tube channel 201. A retaining spring flange 202a is fixedly provided on the outer wall of the open end of the piston tube 202. The outer wall of the retaining spring flange 202a is attached to the inner wall of the piston tube channel 201. A tube spring 202b is sleeved on the outer side of the piston tube 202. The two ends of the tube spring 202b are respectively fixedly connected to the closed end face of the piston tube channel 201 and the end face of the retaining spring flange 202a.

[0025] Furthermore, a piston 202c is slidably sleeved inside the piston tube 202. One end of the piston 202c is fixedly connected to a piston spring 202c-1. The end of the piston spring 202c-1 away from the piston 202c is fixedly connected to the inner top surface of the closed end of the piston tube 202. When the spraying assembly 3 injects the atomized release agent into the piston tube channel 201, the air pressure in the piston tube channel 201 increases, thereby pushing the piston tube 202 to squeeze the tube spring 202b, causing the piston tube 202 to extend into the mold cavity. As the air pressure in the piston tube channel 201 continues to increase, it further pushes the piston 202c in the piston tube 202 to squeeze the piston spring 202c-1, thereby causing the atomized release agent in the piston tube 202 to be sprayed into the mold cavity.

[0026] The operation process in this embodiment is as follows: The spray assembly 3 injects atomized release agent into the piston tube channel 201, increasing the air pressure inside the piston tube channel 201. This pushes the piston tube 202 to compress the tube spring 202b, causing the piston tube 202 to extend into the mold cavity. As the air pressure in the piston tube channel 201 continues to increase, it further pushes the piston 202c in the piston tube 202 to compress the piston spring 202c-1, thereby spraying the atomized release agent in the piston tube 202 into the cavity between the female mold 1 and the male mold 2. This achieves rapid spraying of the release agent, thereby improving the demolding efficiency. Example

[0027] Please see Figures 1 to 5Based on Example 1, the spray assembly 3 includes a diversion ring pipe 301, a three-way pipe 302, and a release agent storage tank 303. High-pressure air is injected into the three-way pipe 302 by an air compressor, so that the high-pressure air carries the release agent in the release agent storage tank 303 into the diversion ring pipe 301, so that the atomized release agent enters each piston tube channel 201.

[0028] Specifically, an exhaust valve channel 101 is provided at the end of the female mold 1 away from the male mold 2, and an exhaust valve plug 101a is slidably sleeved in the exhaust valve channel 101.

[0029] Furthermore, an air vent plug 101a-1 is fixedly provided at one end of the exhaust valve slide plug 101a near the cavity of the female mold 1, and an exhaust hole 101b is provided through the closed end face of the exhaust valve channel 101 near the cavity of the female mold 1. The air vent plug 101a-1 is sleeved in the exhaust hole 101b. A set of vent holes 101a-2 are provided through the end face of the exhaust valve slide plug 101a around the air vent plug 101a-1 in a circumferential array. A top spring clamp 101c is fixedly sleeved inside the end of the exhaust valve channel 101 away from the cavity of the female mold 1.

[0030] Furthermore, a top valve spring 101d is fitted inside the exhaust valve channel 101. The two ends of the top valve spring 101d are fixedly connected to the end face of the top spring clamp 101c and the end face of the exhaust valve slide plug 101a, respectively. When the spraying assembly 3 injects the atomized release agent and high-pressure air into the mold cavity, the air pressure in the mold cavity increases. The gas in the mold cavity pushes the exhaust valve slide plug 101a, causing the air hole plug 101a-1 to be pushed away from the exhaust hole 101b, thereby allowing the gas in the mold cavity to be discharged from the exhaust valve channel 101, preventing the excessive air pressure in the mold cavity from causing mold bulging.

[0031] Furthermore, a set of air inlets 301a are fixedly installed in a circumferential array on one end of the diversion ring pipe 301. Each air inlet 301a is fixedly connected to the end of each piston pipe channel 201 away from the female mold 1. The side wall of the diversion ring pipe 301 is connected to one end of the three-way pipe 302 through a pipe. The outlet end of the release agent storage tank 303 is connected to one end of the three-way pipe 302 through a pipe. One end of the three-way pipe 302 is connected to the outlet end of the air compressor.

[0032] The operation process in this embodiment is as follows: The air compressor injects high-pressure air into the three-way pipe 302, which in turn carries the mold release agent in the mold release agent storage tank 303 into the distribution ring pipe 301, allowing the atomized mold release agent to enter each piston pipe channel 201. When the spraying assembly 3 injects the atomized mold release agent and high-pressure air into the mold cavity, the air pressure in the mold cavity increases. The gas in the mold cavity pushes the exhaust valve slide plug 101a, causing the air hole plug 101a-1 to be pushed away from the exhaust hole 101b, thereby allowing the gas in the mold cavity to be discharged from the exhaust valve channel 101, preventing excessive air pressure in the mold cavity from causing mold bulging.

[0033] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A quick-release metal mold comprising a female mold (1), a male mold (2) and a spray assembly (3), characterized in that: The cavity of the female mold (1) is located outside the core of the male mold (2). A set of piston tube channels (201) is opened on the side plate of the male mold (2) away from the core. A set of piston tubes (202) is fitted inside the piston tube channels (201). A set of spray holes is opened through the side wall of the piston tubes (202). The end of the piston tube channel (201) near the core of the male mold (2) is closed. The end of the piston tube (202) near the closed end of the piston tube channel (201) is closed. The piston tube (202) passes through the closed end of the piston tube channel (201). The end of the piston tube (202) away from the closed end of the piston tube channel (201) is open. The outlet end of the spray assembly (3) is located at the port of each piston tube channel (201) away from the core of the male mold (2).

2. A rapid-releasable metal mold according to claim 1, characterized by: The outer diameter of the piston tube (202) is smaller than the inner diameter of the piston tube channel (201). A retaining spring flange (202a) is fixedly provided on the outer wall of the open end of the piston tube (202). The outer wall of the retaining spring flange (202a) is attached to the inner wall of the piston tube channel (201). A tube spring (202b) is sleeved on the outer side of the piston tube (202). The two ends of the tube spring (202b) are respectively fixedly connected to the closed end face of the piston tube channel (201) and the end face of the retaining spring flange (202a).

3. The metal mold for quick demolding according to claim 2, characterized in that: A piston (202c) is slidably sleeved inside the piston tube (202). A piston spring (202c-1) is fixedly connected to one end of the piston (202c). The end of the piston spring (202c-1) away from the piston (202c) is fixedly connected to the inner top surface of the closed end of the piston tube (202).

4. A rapid-releasable metal mold according to claim 1, characterized by: The female mold (1) has an exhaust valve channel (101) at the end away from the male mold (2), and an exhaust valve plug (101a) is slidably sleeved in the exhaust valve channel (101).

5. A rapid-releasable metal mold according to claim 4, characterized in that: The exhaust valve slide plug (101a) is fixedly provided with an air hole plug (101a-1) at one end near the cavity of the female mold (1). An exhaust hole (101b) is provided through the closed end face of the exhaust valve channel (101) near the cavity of the female mold (1). The air hole plug (101a-1) is sleeved in the exhaust hole (101b). A set of vent holes (101a-2) is provided through the end face of the exhaust valve slide plug (101a) in a circumferential array around the air hole plug (101a-1). A top spring hoop (101c) is fixedly sleeved inside the end of the exhaust valve channel (101) away from the cavity of the female mold (1).

6. A metal mold capable of rapid demolding according to claim 5, characterized in that: The exhaust valve channel (101) is fitted with a top valve spring (101d), and the two ends of the top valve spring (101d) are respectively fixedly connected to the end face of the top spring hoop (101c) and the end face of the exhaust valve slide plug (101a).

7. A metal mold capable of rapid demolding according to claim 6, characterized in that: The spraying assembly (3) includes a flow divider ring pipe (301), a three-way pipe (302), and a mold release agent storage tank (303). A set of air inlets (301a) is fixedly installed in a circumferential array on one end of the flow divider ring pipe (301). Each air inlet (301a) is fixedly connected to the end of each piston pipe channel (201) away from the female mold (1). The side wall of the flow divider ring pipe (301) is connected to one end of the three-way pipe (302) through a pipe. The outlet end of the mold release agent storage tank (303) is connected to one end of the three-way pipe (302) through a pipe. One end of the three-way pipe (302) is connected to the outlet end of the air compressor.

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