Mold forming method

Abstract

The invention relates to the technical field of molds, in particular to a mold forming method which comprises the steps that S1, preparation is conducted, specifically, a male mold and a female mold which correspond to each other are prepared according to the mold type; s2, material preparation: selecting a low-temperature ethylene-vinyl acetate copolymer material coated with a separant as a raw material of a mold, and heating the low-temperature ethylene-vinyl acetate copolymer material to melt the low-temperature ethylene-vinyl acetate copolymer material; s3, mold casting is conducted, specifically, a male mold is driven through an air cylinder, and the raw materials prepared in S1 are guided into a female mold; s4, demolding is conducted, specifically, an air cylinder is controlled, and the male mold is recycled; and S5, recycling: recycling the chippings scattered around the male die and the female die. The water cooling pipes are arranged in the male mold and the female mold, and the formed mold can be cooled through flowing of clear water, so that later demolding work is facilitated; the low-temperature ethylene-vinyl acetate copolymer material coated with the separant is selected as the raw material of the mold, so that the surrounding environment can be prevented from being polluted in the later mold forming process, and meanwhile, scraps scattered around the male mold and the female mold are recycled.

Description

Technical Field

[0001] The invention relates to the technical field of moulds, and in particular to a mould forming method. Background Art

[0002] Injection molded parts are usually processed by injection molding. The structure of the mold generally has two modules, an upper and a lower mold. The upper mold and the lower mold are closed and combined to form an injection cavity in the middle.

[0003] In the existing mold forming device, when cooling the injection molding material, since the refrigeration plate is only set at the mold base, and there is no cooling equipment at the mold box above, after the mold box is used many times, the overall temperature of the mold box rises and residual heat will be left. When the next injection molding is performed, the cooling speed of the injection molded part slows down, affecting the molding of the injection molding material in the mold box. For the cooling of the positive mold, the prior art controls and adjusts the position of the positive mold by setting an adjustable structure corresponding to the positive mold. After the use is completed, the positive mold is moved to an external water tank for cooling, thereby achieving the cooling effect. The existing problem is that this cooling method has a low cooling efficiency, and the cooling medium contacts the outer surface of the mold, which is difficult to quickly and completely cool it. In addition, a large amount of wastewater and waste residue are discharged during the mold manufacturing process, and there is also a pungent smell. These two raw materials are expensive and can only be used once. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a mold forming method, which can effectively cool the mold after forming and prevent environmental pollution during the mold preparation process.

[0005] In order to solve the above technical problems, the present invention proposes the following technical solutions:

[0006] A mold forming method, the mold forming method comprising the following steps:

[0007] S1, preparation: according to the type of mold, prepare the corresponding male mold and female mold, the prepared female mold is fixed on the fixed frame, the male mold is correspondingly set above the female mold, and the male mold is driven to move by the cylinder;

[0008] S2, material preparation: selecting a low-temperature ethylene vinyl acetate copolymer material coated with a release agent as a raw material for the mold, heating it to melt it, and adding talc of the magnesium silicate mineral talc family to the melted mold raw material;

[0009] S3, casting mold: the raw materials prepared in S1 are introduced into the female mold by driving the male mold through the cylinder, and the mold forming process is realized by driving the male mold through the cylinder;

[0010] S4, demoulding: control the cylinder to retract the male mold and realize demoulding;

[0011] S5, Recycling: Recover the debris scattered around the male and female molds, and recycle them after heat treatment.

[0012] Further, in S1, the method for preparing the male mold and the female mold includes:

[0013] Referring to the mold type, the main body of the male mold and the female mold is built, and water cooling pipes and heating pipes are wound inside the male mold and the female mold. The water cooling pipes and the heating pipes are wound separately. At the same time, a micro cylinder is set inside the male mold and the female mold. The telescopic end of the micro cylinder is connected with a push block. The push block is movably fitted on the inner side of the male mold and the female mold. The male mold and the female mold are matched.

[0014] Furthermore, in S2, a low volatile organic compound is selected from the melted mold raw material as a binder, and the melted mold raw material, the low volatile organic compound and the magnesium silicate mineral talc are put into a stirring and heating device and stirred thoroughly.

[0015] Furthermore, in S3, the melted mold raw materials, low volatile organic compounds and magnesium silicate mineral talc are heated to between 110°C and 130°C in a stirring and heating device. Before casting, the male mold and the female mold themselves are heated to between 60°C and 90°C through heating tubes in the male mold and the female mold.

[0016] Further, in S3, the cylinder pushes the male mold, the pressure applied by the male mold to the female mold is 1.2 MPa, the closing time of the male mold and the female mold is 3.5 s, and the cylinder is controlled by a single chip microcomputer.

[0017] Furthermore, after the casting is completed, clean water is injected into the water cooling pipe to cool the mold after forming. After an interval of 3-5 minutes, the cylinder is controlled to separate the male mold from the female mold, and the micro cylinder is driven synchronously to drive the push block to move, push the molding mold in the male mold and the female mold, and realize demolding.

[0018] Furthermore, in S5, a dust suction device is used to absorb the debris scattered around the male mold and the female mold, and the debris is put into a heating device to be melted into a liquid state for recycling.

[0019] It can be seen from the above technical solution that the beneficial effects of the present invention are:

[0020] The present invention arranges water cooling pipes in the male mold and the female mold, and can cool the mold after molding through the flow of clean water, so as to facilitate the later demoulding work; by selecting a low-temperature ethylene vinyl acetate copolymer material coated with an isolation agent as the raw material of the mold, it can prevent the surrounding environment from being polluted during the later mold molding process, and at the same time, the debris scattered around the male mold and the female mold is recovered, so as to prevent the waste of resources and the pollution of the surrounding environment by the debris. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0022] Figure 1 It is an overall schematic diagram of the present invention. DETAILED DESCRIPTION

[0023] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0024] A mold forming method, a mold forming method, the mold forming method comprises the following steps:

[0025] S1, preparation: according to the type of mold, prepare the corresponding male mold and female mold, the prepared female mold is fixed on the fixed frame, the male mold is correspondingly set above the female mold, and the male mold is driven to move by the cylinder;

[0026] S2, material preparation: selecting a low-temperature ethylene vinyl acetate copolymer material coated with a release agent as a raw material for the mold, heating it to melt it, and adding talc of the magnesium silicate mineral talc family to the melted mold raw material;

[0027] S3, casting mold: the raw materials prepared in S1 are introduced into the female mold by driving the male mold through the cylinder, and the mold forming process is realized by driving the male mold through the cylinder;

[0028] S4, demoulding: control the cylinder to retract the male mold and realize demoulding;

[0029] S5, Recycling: Recover the debris scattered around the male and female molds, and recycle them after heat treatment.

[0030] Further, in S1, the method for preparing the male mold and the female mold includes:

[0031] Referring to the mold type, the main body of the male mold and the female mold is built, and water cooling pipes and heating pipes are wound inside the male mold and the female mold. The water cooling pipes and the heating pipes are wound separately. At the same time, a micro cylinder is set inside the male mold and the female mold. The telescopic end of the micro cylinder is connected with a push block. The push block is movably fitted on the inner side of the male mold and the female mold. The male mold and the female mold are matched.

[0032] In actual use, by setting water-cooling pipes in the male mold and the female mold, the mold after molding can be cooled by the flow of clean water, thereby facilitating the subsequent demolding work; by selecting low-temperature ethylene vinyl acetate copolymer material coated with an isolation agent as the raw material of the mold, it can prevent pollution of the surrounding environment during the subsequent mold molding process, and at the same time, the debris scattered around the male mold and the female mold can be recycled, which can prevent waste of resources and prevent the debris from being discharged and polluting the surrounding environment.

[0033] In this embodiment, in S2, a low volatile organic compound is selected from the melted mold raw material as a binder, and the melted mold raw material, the low volatile organic compound and the magnesium silicate mineral talc are placed in a stirring and heating device and stirred thoroughly.

[0034] In this embodiment, in S3, the melted mold raw material, low volatile organic compounds and magnesium silicate mineral talc are heated to between 110° C. and 130° C. in a stirring and heating device. Before casting, the male mold and the female mold are heated to between 60° C. and 90° C. through heating tubes in the male mold and the female mold.

[0035] Specifically, the optimal temperature of the melted mold raw materials, low volatile organic compounds and magnesium silicate mineral talc is 115°C, and the optimal temperature of the male mold and the female mold itself is 70°C.

[0036] In this embodiment, in S3, the cylinder pushes the male mold, the pressure applied by the male mold to the female mold is 1.2 MPa, the closing time of the male mold and the female mold is 3.5 s, and the cylinder is controlled by a single chip microcomputer;

[0037] Specifically, the cylinder is controlled by a single chip microcomputer so that the cylinder can accurately apply downward pressure and close the mold at a certain time.

[0038] In this embodiment, after the mold is cast, clean water is injected into the water cooling pipe to cool the mold after forming. After an interval of 3-5 minutes, the cylinder is controlled to separate the male mold from the female mold, and the micro cylinder is synchronously driven to drive the push block to move, push the forming mold in the male mold and the female mold, and realize demoulding;

[0039] Specifically, after the interval time is controlled to 4 minutes, the cylinder is controlled, and the heat dissipation effect is optimal and demoulding work is easier.

[0040] In this embodiment, in S5, a dust suction device is used to absorb the debris scattered around the male mold and the female mold, and the debris is put into a heating device to be melted into a liquid state for recycling.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A mold forming method, characterized in that: The mold forming method comprises the following steps: S1, preparation: according to the type of mold, prepare the corresponding male mold and female mold, the prepared female mold is fixed on the fixed frame, the male mold is correspondingly set above the female mold, and the male mold is driven to move by the cylinder; S2, material preparation: selecting a low-temperature ethylene vinyl acetate copolymer material coated with a release agent as a raw material for the mold, heating it to melt it, and adding talc of the magnesium silicate mineral talc family to the melted mold raw material; S3, casting mold: the raw materials prepared in S1 are introduced into the female mold by driving the male mold through the cylinder, and the mold forming process is realized by driving the male mold through the cylinder; S4, demoulding: control the cylinder to retract the male mold and realize demoulding; S5, Recycling: Recover the debris scattered around the male and female molds, and recycle them after heat treatment.

2. A mold forming method according to claim 1, characterized in that: In S1, the method for preparing the male mold and the female mold includes: Referring to the mold type, the main body of the male mold and the female mold is built, and water cooling pipes and heating pipes are wound inside the male mold and the female mold. The water cooling pipes and the heating pipes are wound separately. At the same time, a micro cylinder is set inside the male mold and the female mold. The telescopic end of the micro cylinder is connected with a push block. The push block is movably fitted on the inner side of the male mold and the female mold. The male mold and the female mold are matched.

3. A mold forming method according to claim 2, characterized in that: In S2, a low volatile organic compound is selected as a binder from the melted mold raw material, and the melted mold raw material, the low volatile organic compound and talc of the magnesium silicate mineral talc are put into a stirring and heating device and stirred thoroughly.

4. A mold forming method according to claim 3, characterized in that: In S3, the melted mold raw materials, low volatile organic compounds and magnesium silicate mineral talc are heated to between 110°C and 130°C in a stirring and heating device. Before casting, the male mold and the female mold themselves are heated to between 60°C and 90°C through heating tubes in the male mold and the female mold.

5. A mold forming method according to claim 1, characterized in that: In S3, the cylinder pushes the male mold, the pressure applied by the male mold to the female mold is 1.2 MPa, and the closing time of the male mold and the female mold is 3.5 s. The cylinder is controlled by a single chip microcomputer.

6. A mold forming method according to claim 2, characterized in that: After the casting is completed, clean water is injected into the water cooling pipe to cool the mold after forming. After an interval of 3-5 minutes, the cylinder is controlled to separate the male mold from the female mold, and the micro cylinder is driven synchronously to drive the push block to move, push the molding mold in the male mold and the female mold to achieve demolding.

7. A mold forming method according to claim 1, characterized in that: In S5, a dust suction device is used to absorb the debris scattered around the male and female molds, and the debris is put into a heating device to melt it back into liquid for recycling.

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