Plastic mold with protective structure

Abstract

The utility model belongs to plastic mould technical field, concretely relates to a plastic mould with protection structure, including electric pump one, the output of electric pump one is fixed with push -back, the right side fixed connection of push -back has the push rod, the right side fixed connection of push rod has lower mould, the inner wall of lower mould is equipped with the demoulding assembly for carrying out demoulding to plastic, the right side of lower mould is connected with the positioning rod, the positioning rod swingly penetrates and has upper mould, the right side of upper mould is equipped with injection port, the inner wall of lower mould is equipped with the cavity, the outer wall of cavity is equipped with the protection assembly for preventing melt leakage. This plastic mould with protection structure reduces melt leakage rate through the cooperation of sealing ring, heating wire, control system control in protection assembly, and the air film formed by the air cavity avoids the direct friction and abrasion of the metal surface, and the baffle can prevent the accidental contact of the operator with the high-temperature part of the mould.

Description

Technical Field

[0001] This utility model relates to the field of plastic mold technology, specifically to a plastic mold with a protective structure. Background Technology

[0002] In the manufacturing of plastic products, plastic molds are key molding tools, and their performance and reliability directly affect product quality, production efficiency, and corporate economic benefits. With the rapid development of the manufacturing industry, the application scenarios of plastic molds are constantly expanding, covering multiple industries such as electronics, automobile manufacturing, and medical devices, which places higher demands on the precision, stability, and safety of molds.

[0003] Currently, in existing technologies, the sealing structure of molds is mostly static sealing, such as using ordinary rubber sealing rings. During long-term use, mold wear leads to an increase in the mating clearance, and the melt is prone to overflow from the clearance, forming flash. Therefore, a plastic mold with a protective structure is proposed. Utility Model Content

[0004] The main objective of this invention is to provide a plastic mold with a protective structure, which can solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention proposes a plastic mold with a protective structure, comprising an electric pump, a push plate fixed to the output end of the electric pump, a push rod fixedly connected to the right side of the push plate, a lower mold fixedly connected to the right side of the push rod, a demolding assembly for demolding the plastic on the inner wall of the lower mold, a positioning rod connected to the right side of the lower mold, the positioning rod movably penetrating through an upper mold, an injection port on the right side of the upper mold, a cavity on the inner wall of the lower mold, and a protective assembly for preventing melt leakage on the outer wall of the cavity, the protective assembly comprising:

[0006] A sealing ring is fixedly connected to the outer wall of the cavity;

[0007] A heating wire, which is fixedly connected to the left side of the sealing ring;

[0008] A wire, which is fixedly connected to the left side of the heating wire;

[0009] A control system is installed on the outer wall of the lower mold.

[0010] Preferably, the demolding assembly includes a second electric pump, which is installed on the left side of the lower mold. The output end of the second electric pump is connected to a connecting plate, and a connecting column is fixedly connected to the right side of the connecting plate. A sealing plate is fixedly connected to the inner wall of the cavity.

[0011] Preferably, the connecting post movably penetrates the sealing plate, and the left side of the sealing plate and the right side of the connecting plate are elastically connected by a spring.

[0012] Preferably, a fixing rod is fixedly connected to the left side of the lower mold, and a fixing plate is fixedly connected to the left side of the fixing rod. The fixing plate is fixedly connected to the push rod, which can achieve an auxiliary support effect.

[0013] Preferably, air cavities are formed on the right side of the lower mold and the left side of the upper mold.

[0014] Preferably, the outer wall of the lower mold is hinged with a baffle to prevent operators from accidentally coming into contact with the high-temperature part of the mold.

[0015] Preferably, the lower mold has a water inlet and a water outlet on its front side, and the water cools the plastic melt to form a solid shape.

[0016] This utility model provides a plastic mold with a protective structure. It has the following beneficial effects:

[0017] (1) The plastic mold with protective structure reduces the melt leakage rate through the cooperation of the sealing ring, heating wire and control system in the protective components. At the same time, the gas film formed by the gas cavity avoids direct friction and wear on the metal surface, and the baffle can prevent the operator from accidentally contacting the high temperature part of the mold.

[0018] (2) The plastic mold with protective structure controls the mold temperature within a suitable range through cooling circulation, so that the plastic melt cools and solidifies into shape, and then the demolding effect is achieved through the cooperation of electric pump 2, connecting plate and connecting column in the demolding assembly. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a schematic diagram of the overall three-dimensional structure of the present invention. Figure 2 ;

[0022] Figure 3 This is a schematic cross-sectional view of the overall structure of this utility model;

[0023] Figure 4 This utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0024] Figure 5 This utility model Figure 3 Enlarged structural diagram at point B.

[0025] Explanation of icon numbers:

[0026] 1. Electric pump one; 2. Push plate; 3. Push rod; 4. Fixing plate; 5. Lower mold; 6. Fixing rod; 7. Demolding assembly; 71. Electric pump two; 72. Connecting plate; 73. Connecting column; 74. Sealing plate; 8. Positioning rod; 9. Upper mold; 10. Injection port; 11. Cavity; 12. Protective assembly; 121. Sealing ring; 122. Heating wire; 123. Wire; 124. Control system; 13. Air chamber; 14. Baffle; 15. Water inlet; 16. Water outlet.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figure 1-5 This utility model proposes a plastic mold with a protective structure, including an electric pump 1, a push plate 2 fixed to the output end of the electric pump 1, a push rod 3 fixedly connected to the right side of the push plate 2, a lower mold 5 fixedly connected to the right side of the push rod 3, a fixing rod 6 fixedly connected to the left side of the lower mold 5, and a fixing plate 4 fixedly connected to the left side of the fixing rod 6. The fixing plate 4 is fixedly connected to the push rod 3 to achieve an auxiliary support effect. The inner wall of the lower mold 5 is provided with a demolding component 7 for demolding the plastic. A positioning rod 8 is connected to the right side of the lower mold 5. The positioning rod 8 movably passes through an upper mold 9. An injection port 10 is opened on the right side of the upper mold 9. A cavity 11 is opened on the inner wall of the lower mold 5. A protective component 12 is provided on the outer wall of the cavity 11.

[0030] In an embodiment of this utility model, to prevent melt leakage during long-term use, the protective component 12 specifically includes a sealing ring 121, a heating wire 122, a wire 123, and a control system 124. The sealing ring 121 is fixedly connected to the outer wall of the cavity 11. The sealing ring 121 is made of metal alloy. An expansion gap is reserved on the outer wall of the sealing ring 121. The heating wire 122 is fixedly connected to the left side of the sealing ring 121. The wire 123 is fixedly connected to the left side of the heating wire 122. The control system 124 is installed on the outer wall of the lower mold 5.

[0031] Furthermore, the demolding assembly 7 includes an electric pump 71, which is installed on the left side of the lower mold 5. The output end of the electric pump 71 is connected to a connecting plate 72. A connecting post 73 is fixedly connected to the right side of the connecting plate 72. A sealing plate 74 is fixedly connected to the inner wall of the cavity 11. The connecting post 73 movably passes through the sealing plate 74. The left side of the sealing plate 74 is elastically connected to the right side of the connecting plate 72 by a spring.

[0032] Furthermore, air cavities 13 are provided on the right side of the lower mold 5 and the left side of the upper mold 9. The air cavities 13 are connected to the outside through micropores. When the mold is closed, the air in the air cavities 13 forms a thick air film isolation layer to avoid direct friction and wear on the metal parting surface. A baffle 14 is hinged to the outer wall of the lower mold 5 to prevent operators from accidentally contacting the high-temperature part of the mold. A water inlet 15 and a water outlet 16 are provided on the front of the lower mold 5. Water is used to cool the plastic melt so that it can be cooled and formed.

[0033] It should be noted that the above electrical components are all existing technology products. Those skilled in the art should select, install and complete the circuit debugging work according to the needs of use to ensure that each electrical appliance can work normally. For example, electric pump 1 and electric pump 2 71 are both connected to the mains power. The components are all general standard parts or components known to those skilled in the art. Their structure and principle can be known by those skilled in the art through technical manuals or conventional experimental methods. No specific restrictions are made here.

[0034] In this invention, during use, the electric pump 1 is activated to push the push plate 2, which in turn drives the push rod 3, causing the lower mold 5 to move to the right along the positioning rod 8 and close with the upper mold 9. During mold closing, compressed air is introduced into the air cavity 13 between the lower mold 5 and the upper mold 9 through micropores to form an air film, preventing direct friction and wear between the metal surfaces. After mold closing, the molten plastic is injected into the mold cavity through the injection port 10 on the right side of the upper mold 9. After long-term use, wear leads to an increase in the fit clearance, and the molten plastic easily overflows from the clearance, forming flash. The control system 124 monitors the molten plastic pressure fluctuations in real time. When the pressure exceeds the threshold, it indicates that the clearance has reached a critical value. The sealing ring 121 is heated by the heating wire 122, causing the sealing ring 121 to expand and preventing the molten plastic from leaking from the cavity 11. After the molten plastic is injected into the mold cavity, water or coolant flows into the cooling channel inside the mold from the inlet 15 on the front of the lower mold 5, absorbing the heat generated by the mold during the molding process and cooling the sealing ring 121. Then it flows out from the outlet 16. Through the cooling cycle, the mold temperature is controlled within a suitable range, allowing the molten plastic to cool and solidify. After molding, the connecting plate 72 is moved to the right by the electric pump 71. The connecting plate 72 pushes the plastic part through the connecting column 73, causing it to separate and achieve the demolding effect.

[0035] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A plastic mold with a protective structure, comprising an electric pump (1), characterized in that: The output end of the electric pump (1) is fixed with a push plate (2), and a push rod (3) is fixedly connected to the right side of the push plate (2). A lower mold (5) is fixedly connected to the right side of the push rod (3). The inner wall of the lower mold (5) is provided with a demolding component (7) for demolding the plastic. A positioning rod (8) is connected to the right side of the lower mold (5). The positioning rod (8) movably passes through the upper mold (9). An injection port (10) is opened on the right side of the upper mold (9). A cavity (11) is opened on the inner wall of the lower mold (5). A protective component (12) for preventing melt leakage is provided on the outer wall of the cavity (11). The protective component (12) includes: A sealing ring (121) is fixedly connected to the outer wall of the cavity (11); A heating wire (122) is fixedly connected to the left side of the sealing ring (121); A wire (123) is fixedly connected to the left side of the heating wire (122); A control system (124) is installed on the outer wall of the lower mold (5).

2. A plastic mold with a protective structure according to claim 1, characterized in that: The demolding assembly (7) includes an electric pump 2 (71), which is installed on the left side of the lower mold (5). The output end of the electric pump 2 (71) is connected to a connecting plate (72). A connecting column (73) is fixedly connected to the right side of the connecting plate (72). A sealing plate (74) is fixedly connected to the inner wall of the cavity (11).

3. A plastic mold with a protective structure according to claim 2, characterized in that: The connecting post (73) movably passes through the sealing plate (74), and the left side of the sealing plate (74) is elastically connected to the right side of the connecting plate (72) by a spring.

4. A plastic mold with a protective structure according to claim 1, characterized in that: A fixing rod (6) is fixedly connected to the left side of the lower mold (5), and a fixing plate (4) is fixedly connected to the left side of the fixing rod (6). The fixing plate (4) is fixedly connected to the push rod (3).

5. A plastic mold with a protective structure according to claim 1, characterized in that: Air cavities (13) are provided on the right side of the lower mold (5) and the left side of the upper mold (9).

6. A plastic mold with a protective structure according to claim 1, characterized in that: The outer wall of the lower mold (5) is hinged with a baffle (14).

7. A plastic mold with a protective structure according to claim 1, characterized in that: The lower mold (5) has an inlet (15) and an outlet (16) on its front side.

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