Continuous injection molding equipment and injection molding method thereof

Abstract

The present invention relates to the technical field related to injection molding equipment, specifically to a continuous injection molding equipment and an injection molding method thereof, the continuous injection molding equipment comprising an injection molding device and an injection molding mold, the injection molding mold comprising a lower mold structure and an upper mold structure, the lower mold structure comprising a primary mold body, a secondary mold body and a heat exchange tube; by setting the lower mold structure of the injection molding mold on the continuous injection molding equipment to be composed of a primary mold body, a secondary mold body and a heat exchange tube, and arranging a support plate, a guide plate, a cross support, a toggle spring, a top ball seat and a ball in the inner cavity of the heat exchange tube, so that when cooling water flows in the heat exchange tube, the cooling water will form an impact effect with the ball, and through the rebound effect of the toggle spring, the toggle spring and the ball form a reciprocating motion, thereby forming a certain toggle effect on the cooling water, so that the cooling water can fully exchange heat with the injection molded part, thereby effectively improving the cooling and shaping efficiency of the injection molded part.

Description

Technical Field

[0001] The present invention relates to the technical field related to injection molding equipment, and in particular to a continuous injection molding equipment and an injection molding method thereof. Background Art

[0002] Injection molding is a method for producing industrial products, and its products are usually made of rubber injection molding and plastic injection molding. Injection molding can also be divided into injection molding and die casting.

[0003] Whether the injection molding equipment can operate continuously mainly depends on the cooling and shaping efficiency of the injection molded parts in the injection molding equipment. However, the water-cooling structure used for cooling on traditional injection molding equipment simply uses cooling water to flow through the cooling pipe. In this process, it is difficult for the cooling water to fully exchange heat with the injection mold, thereby affecting the overall cooling efficiency of the cooling structure, thereby causing a certain degree of impact on the continuous operation of the injection molding equipment. To this end, the present invention proposes a continuous injection molding equipment and an injection molding method thereof to solve the above problems. Summary of the Invention

[0004] The object of the present invention is to provide a continuous injection molding device and an injection molding method thereof to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a continuous injection molding device, the continuous injection molding device includes an injection molding device and an injection molding mold, the injection molding mold includes a lower mold structure and an upper mold structure, the lower mold structure includes: a first-level mold body, the upper surface of the first-level mold body is provided with a mold cavity; a second-level mold body, the first-level mold body and the second-level mold body are fixedly connected, and the first-level mold body and the second-level mold body are provided with a liquid inlet cavity, a liquid return cavity and a heat exchange cavity, the two ends of the heat exchange cavity are respectively connected to the liquid inlet cavity and the liquid return cavity, and the liquid inlet cavity, the liquid return cavity and the heat exchange cavity are all semicircular notches, and the first-level mold body , and the cavity structures on the secondary mold body are arranged correspondingly, and the port positions of the liquid inlet cavity and the return liquid cavity on the primary mold body are respectively provided with a liquid inlet pipe connection port and a liquid return pipe connection port; the heat exchange tube, the heat exchange tube is fixed in the heat exchange cavity, and a support plate is fixedly connected to the inner wall of the heat exchange tube, the inner end of the support plate is connected to a guide plate, a cross support is fixedly connected to the inner wall of the guide plate, and a plurality of cross supports are arranged at equal intervals, and a toggle spring is fixedly connected to the end surface of the cross support facing the liquid inlet cavity through a connecting ring, the end of the toggle spring is fixedly connected to a top ball seat, and a ball is movably arranged inside the guide plate.

[0006] The liquid inlet pipe connection port is connected to the liquid supply port of the cooling water circulation system through the liquid inlet pipe, and the liquid return pipe connection port is connected to the liquid return port of the cooling water circulation system through the liquid return pipe.

[0007] Preferably, the length of the heat exchange tube is consistent with the length of the heat exchange chamber, and the outer diameter of the heat exchange tube is consistent with the inner diameter of the heat exchange chamber. The heat exchange tube, support plate and guide plate are integrally formed, and two pairs of support plates are arranged in a cross shape. The cross section of the guide plate is one-fifth of a circle, and the guide plates are arranged on the same circumference. The cross support is fixedly welded to the inner wall of the guide plate.

[0008] Preferably, the diameter of the ball is greater than the gap between adjacent guide plates, and the diameter of the ball is smaller than the inner diameter of the circular tube formed by the guide plates, and when the toggle spring is in the reset state, the length of the toggle spring plus the diameter of the ball is smaller than the spacing between adjacent toggle springs.

[0009] Preferably, an air seat groove is provided at the bottom of the heat exchange cavity on the secondary mold body, and an air cavity is provided on the secondary mold body. The air seat groove is connected to the air cavity through a through hole. An air seat is integrally formed on the lower side of the heat exchange tube, and an air chamber is provided on the air seat.

[0010] Preferably, an air hole is provided on the toggle spring, and the end of the toggle spring facing the top ball seat is sealed, and a connecting tube is integrally formed with the end of the toggle spring facing the connecting ring. The air hole on the toggle spring is connected to the air chamber through the connecting tube, and a guide tube is provided on the side wall of the air chamber.

[0011] Preferably, the size of the air seat matches the size of the air seat groove, the guide tube is arranged corresponding to the through hole, and when the heat exchange tube is actually installed, its air seat is embedded in the air seat groove, and the guide tube is inserted into the through hole, and the guide tube and the side wall of the through hole are sealed with sealant.

[0012] Preferably, the port position of the air cavity is integrally formed with an air pipe connecting port, and the air pipe connecting port is connected to a primary air pipe and a secondary air pipe through a three-way connector. The primary air pipe and the secondary air pipe are respectively provided with a primary air valve and a secondary air valve, and the primary air pipe and the secondary air pipe are respectively connected to the air supply equipment and the air extraction equipment.

[0013] Preferably, a toggle protrusion is integrally formed on the inner side wall of the guide plate, and the toggle protrusion is an arc-shaped protrusion structure with a semicircular cross-section, and multiple toggle protrusions are arranged at equal intervals, and the edge lines of both sides of the top ball seat are chamfered.

[0014] Preferably, a threaded hole is provided on the first-level mold body, and a screw hole is provided on the second-level mold body, and the screw holes and the threaded holes are arranged correspondingly, and the threaded holes and the liquid inlet cavity, liquid return cavity, heat exchange cavity, and air cavity are all staggered.

[0015] A continuous injection molding method comprising the following steps:

[0016] Step 1: A process of closing the lower mold structure and the upper mold structure. During the process of closing the lower mold structure and the upper mold structure, the lower mold structure and the upper mold structure are brought into contact with each other through a driving structure.

[0017] Step 2: The injection molding process of the injection molding device, during which the injection molding device injects the injection material into the mold cavity.

[0018] Step 3: Cooling and shaping process of the injection molded parts. During the cooling and shaping process of the injection molded parts, the cooling water circulation system allows the cooling water to flow along the liquid inlet pipe, liquid inlet cavity, heat exchange pipe, liquid return cavity, and liquid return pipe, so that the heat of the injection molded parts is taken away by the cooling water, thereby effectively improving the shaping efficiency of the injection molded parts.

[0019] Step 4: Demolding process. During the demoulding process, the lower mold structure and the upper mold structure are separated by starting the driving structure, and then the demoulding operation is performed.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. By setting the lower mold structure of the injection molding mold on the continuous injection molding equipment to be composed of a first-level mold body, a second-level mold body and a heat exchange tube, and arranging a support plate, a guide plate, a cross support, a toggle spring, a top ball seat and a ball in the inner cavity of the heat exchange tube, when the cooling water flows in the heat exchange tube, the cooling water will form an impact effect with the ball, and through the rebound effect of the toggle spring, the toggle spring and the ball form a reciprocating motion, thereby forming a certain toggle effect on the cooling water, so that the cooling water can fully exchange heat with the injection molded part, thereby effectively improving the cooling and shaping efficiency of the injection molded part.

[0022] 2. By opening an air hole on the toggle spring, and connecting it to the air cavity through a connecting pipe, an air chamber, and a guide pipe, and connecting the air pipe connecting port at the end of the air cavity to the air supply equipment and the air exhaust equipment respectively through a three-way connector, the air pressure in the air hole on the toggle spring is continuously changed through the alternating operation of the air supply equipment and the air exhaust equipment, so that the elastic coefficient of the toggle spring can change to a certain extent, thereby effectively improving the toggle spring and the ball bearing's toggling effect on the cooling water, thereby further improving the heat exchange effect.

[0023] 3. A toggle protrusion is provided on the inner side wall of the guide plate so that the fluctuation amplitude of the ball can be further increased when the ball moves back and forth, thereby further improving the toggle effect on the cooling water. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of the present invention.

[0025] Figure 2 It is a half-section view of the present invention.

[0026] Figure 3 This is a schematic diagram of the secondary mold body structure of the present invention.

[0027] Figure 4 for Figure 3 A magnified schematic diagram of the structure in the middle.

[0028] Figure 5 This is a half-section view of the heat exchange tube of the present invention.

[0029] Figure 6 This is a cross-sectional view of the heat exchange tube.

[0030] Figure 7 It is a half-sectional view of the toggle spring of the present invention.

[0031] In the figure: first-level mold body 1, second-level mold body 2, mold cavity 3, liquid inlet cavity 4, liquid return cavity 5, heat exchange cavity 6, liquid inlet pipe connection port 7, liquid return pipe connection port 8, heat exchange pipe 9, support plate 10, guide plate 11, cross support 12, toggle spring 13, connecting ring 14, top ball seat 15, ball 16, screw hole 17, air seat groove 18, air cavity 19, through hole 20, air pipe connection port 21, air seat 22, air chamber 23, guide tube 24, air hole 25, connecting pipe 26, three-way connector 27, first-level air pipe 28, second-level air pipe 29, first-level air valve 30, second-level air valve 31, toggle protrusion 32. DETAILED DESCRIPTION

[0032] In order to clearly and completely describe the objectives and technical solutions of the present invention and make the advantages more clearly understood, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, not to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," "horizontal," and the like, indicating positions or location relationships, are based on the positions or location relationships shown in the accompanying drawings and are intended only to facilitate the description of the present invention and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limiting the present invention. Furthermore, the terms "one," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0035] For the purpose of simplicity and illustration, the principles of the embodiments are described primarily with reference to examples. In the following description, many specific details are provided to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily obscuring the understanding of these embodiments. In addition, all embodiments may be used in combination with each other.

[0036] See also Figure 1-7 The present invention provides the following four preferred embodiments. Example 1

[0037] A continuous injection molding device, the continuous injection molding device includes an injection molding device and an injection molding mold, the injection molding mold includes a lower mold structure and an upper mold structure, the lower mold structure includes a first-level mold body 1, a second-level mold body 2 and a heat exchange tube 9, the upper surface of the first-level mold body 1 is provided with a mold cavity 3, the first-level mold body 1 and the second-level mold body 2 are fixedly connected, and the first-level mold body 1 and the second-level mold body 2 are provided with a liquid inlet cavity 4, a liquid return cavity 5 and a heat exchange cavity 6, the two ends of the heat exchange cavity 6 are respectively connected to the liquid inlet cavity 4 and the liquid return cavity 5, and the liquid inlet cavity 4, the liquid return cavity 5 and the heat exchange cavity 6 are all semicircular notches, and the cavity structures on the first-level mold body 1 and the second-level mold body 2 are correspondingly arranged, and the port positions of the liquid inlet cavity 4 and the liquid return cavity 5 on the first-level mold body 1 are arranged A liquid inlet pipe connection port 7 and a liquid return pipe connection port 8 are separately provided. The heat exchange tube 9 is fixed in the heat exchange chamber 6, and a support plate 10 is fixedly connected to the inner wall of the heat exchange tube 9. The inner end of the support plate 10 is connected to a guide plate 11. A cross support 12 is fixedly connected to the inner wall of the guide plate 11, and a plurality of cross supports 12 are arranged at equal intervals. A toggle spring 13 is fixedly connected to the end surface of the cross support 12 facing the liquid inlet chamber 4 through a connecting ring 14, and the end of the toggle spring 13 is fixedly connected to a top ball seat 15, and a ball 16 is movably provided inside the guide plate 11. The liquid inlet pipe connection port 7 is connected to the liquid supply port of the cooling water circulation system through the liquid inlet pipe, and the return pipe connection port 8 is connected to the return liquid port of the cooling water circulation system through the return liquid pipe.

[0038] The length of the heat exchange tube 9 is consistent with the length of the heat exchange chamber 6, and the outer diameter of the heat exchange tube 9 is consistent with the inner diameter of the heat exchange chamber 6. The heat exchange tube 9, the support plate 10, and the guide plate 11 are integrally formed, and the support plate 10 is arranged in two pairs in a cross shape. The cross section of the guide plate 11 is one-fifth of a circle, and the guide plates 11 are arranged on the same circumference. The cross support 12 is fixedly welded to the inner wall of the guide plate 11.

[0039] The diameter of the ball 16 is greater than the gap between adjacent guide plates 11, and the diameter of the ball 16 is less than the inner diameter of the circular tube formed by the guide plates 11. When the toggle spring 13 is in the reset state, the length of the toggle spring 13 plus the diameter of the ball 16 is less than the spacing between adjacent toggle springs 13. By setting the lower mold structure of the injection molding mold on the continuous injection molding device to be composed of a first-level mold body 1, a second-level mold body 2 and a heat exchange tube 9, and setting a heat exchange tube 9 in the inner cavity of the heat exchange tube 9, The support plate 10, the guide plate 11, the cross support 12, the toggle spring 13, the top ball seat 15 and the ball 16, so that when the cooling water flows in the heat exchange tube 9, the cooling water will form an impact effect with the ball 16, and through the rebound effect of the toggle spring 13, the toggle spring 13 and the ball 16 form a reciprocating motion, thereby forming a certain toggle effect on the cooling water, so that the cooling water can fully exchange heat with the injection molded part, thereby effectively improving the cooling and shaping efficiency of the injection molded part. Example 2

[0040] On the basis of Example 1, an air seat groove 18 is provided at the bottom of the heat exchange cavity 6 on the secondary mold body 2, and an air cavity 19 is provided on the secondary mold body 2. The air seat groove 18 is connected to the air cavity 19 through a through hole 20. An air seat 22 is integrally formed on the lower side of the heat exchange tube 9, and an air chamber 23 is provided on the air seat 22.

[0041] An air hole 25 is provided on the toggle spring 13, and the end of the toggle spring 13 facing the top ball seat 15 is sealed, and a connecting tube 26 is integrally formed with the end of the toggle spring 13 facing the connecting ring 14. The air hole 25 on the toggle spring 13 is connected to the air chamber 23 through the connecting tube 26, and a guide tube 24 is provided on the side wall of the air chamber 23.

[0042] The size of the air seat 22 is consistent with the size of the air seat groove 18, the guide tube 24 is arranged corresponding to the through hole 20, and when the heat exchange tube 9 is actually installed, its air seat 22 is embedded in the air seat groove 18, and the guide tube 24 is inserted into the through hole 20, and the guide tube 24 and the side wall of the through hole 20 are sealed with sealant.

[0043] The port position of the air cavity 19 is integrally formed with an air pipe connecting port 21, and the air pipe connecting port 21 is connected to a primary air pipe 28 and a secondary air pipe 29 through a three-way connector 27. The primary air pipe 28 and the secondary air pipe 29 are respectively provided with a primary air valve 30 and a secondary air valve 31, and the primary air pipe 28 and the secondary air pipe 29 are respectively connected to the air supply equipment and the air exhaust equipment. By opening an air hole 25 on the toggle spring 13, and connecting it with the air cavity 19 through a connecting pipe 26, an air chamber 23, and a guide pipe 24, and connecting the air pipe connecting port 21 at the end of the air cavity 19 to the air supply equipment and the air exhaust equipment respectively through a three-way connector 27, the air pressure in the air hole 25 on the toggle spring 13 is continuously changed through the alternating operation of the air supply equipment and the air exhaust equipment, so that the elastic coefficient of the toggle spring 13 can change to a certain extent, thereby effectively improving the toggle spring 13 and the ball 16 to toggle the cooling water effect, thereby further improving the heat exchange effect. Example 3

[0044] On the basis of the second embodiment, a toggle protrusion 32 is integrally formed on the inner wall of the guide plate 11. The toggle protrusion 32 is an arc-shaped protrusion structure with a semicircular cross-section, and multiple toggle protrusions 32 are arranged at equal intervals, and the edge lines of both sides of the top ball seat 15 are chamfered. By arranging the toggle protrusion 32 on the inner wall of the guide plate 11, the fluctuation amplitude of the ball 16 can be further increased when the ball 16 moves back and forth, thereby further improving the toggle effect on the cooling water.

[0045] A threaded hole is opened on the first-level mold body 1, and a screw hole 17 is opened on the second-level mold body 2. The screw hole 17 and the threaded hole are arranged correspondingly, and the threaded hole, the screw hole 17 and the liquid inlet cavity 4, the liquid return cavity 5, the heat exchange cavity 6, and the air cavity 19 are all staggered. Example 4

[0046] On the basis of the third embodiment, an injection molding method of a continuous injection molding device is provided, wherein the injection molding method of the continuous injection molding device comprises the following steps:

[0047] Step 1: During the clamping process of the lower mold structure and the upper mold structure, the lower mold structure and the upper mold structure are brought into contact with each other through the driving structure.

[0048] Step 2: Injection molding process of the injection molding device. During the injection molding process of the injection molding device, the injection material is injected into the mold cavity 3 through the injection molding device.

[0049] Step 3: Cooling and shaping process of injection molded parts. During the cooling and shaping process of injection molded parts, cooling water is allowed to flow along the liquid inlet pipe, liquid inlet cavity 4, heat exchange pipe 9, liquid return cavity 5, and liquid return pipe through the cooling water circulation system, so that the heat of the injection molded parts is taken away by the cooling water, thereby effectively improving the shaping efficiency of the injection molded parts.

[0050] Step 4: Demolding process. During the demoulding process, the lower mold structure and the upper mold structure are separated by starting the driving structure, and then the demoulding operation is performed.

[0051] Although the above describes the illustrative specific implementation methods of the present application so that those skilled in the art can understand the present application, the present application is not limited to the scope of the specific implementation methods. For those of ordinary skill in the art, as long as various changes are within the spirit and scope of the present application defined and determined by the attached claims, all application creations based on the concept of the present application are protected.

Claims

1. A continuous injection molding device, comprising an injection molding device and an injection molding mold, wherein the injection molding mold comprises a lower mold structure and an upper mold structure, characterized in that: The lower mold structure includes: A primary mold body, wherein a mold cavity is formed on an upper surface of the primary mold body; A secondary mold body, wherein the primary mold body and the secondary mold body are fixedly connected, and a liquid inlet cavity, a liquid return cavity, and a heat exchange cavity are provided on the primary mold body and the secondary mold body, and the two ends of the heat exchange cavity are respectively connected to the liquid inlet cavity and the liquid return cavity, and the liquid inlet cavity, the liquid return cavity, and the heat exchange cavity are all semicircular notches, and the cavity structures on the primary mold body and the secondary mold body are arranged correspondingly, and the liquid inlet pipe connection port and the liquid return pipe connection port are respectively provided at the port positions of the liquid inlet cavity and the liquid return cavity on the primary mold body; A heat exchange tube, wherein the heat exchange tube is fixed in the heat exchange cavity, and a support plate is fixedly connected to the inner side wall of the heat exchange tube, the inner end of the support plate is connected to a guide plate, a cross support is fixedly connected to the inner side wall of the guide plate, and a plurality of cross supports are arranged at equal intervals, and a toggle spring is fixedly connected to the end surface of the cross support facing the liquid inlet cavity through a connecting ring, the end of the toggle spring is fixedly connected to a top ball seat, and a ball is movably provided inside the guide plate; The diameter of the ball is greater than the gap between adjacent guide plates, and the diameter of the ball is smaller than the inner diameter of the circular tube formed by the guide plates. When the toggle spring is in the reset state, the sum of the length of the toggle spring and the diameter of the ball is smaller than the spacing between adjacent toggle springs. An air seat groove is provided at the bottom of the heat exchange cavity on the secondary mold body, and an air cavity is provided on the secondary mold body. The air seat groove is connected to the air cavity through a through hole. An air seat is integrally formed on the lower side of the heat exchange tube, and an air chamber is provided on the air seat. The toggle spring is provided with an air hole, which is connected to the air chamber through a connecting pipe; The inner side wall of the guide plate is integrally formed with a toggle protrusion, and a plurality of toggle protrusions are arranged at equal intervals.

2. A continuous injection molding device according to claim 1, characterized in that: The liquid inlet pipe connection port is connected to the liquid supply port of the cooling water circulation system through the liquid inlet pipe, and the return liquid pipe connection port is connected to the return liquid port of the cooling water circulation system through the return liquid pipe. The length of the heat exchange tube is consistent with the length of the heat exchange chamber, and the outer diameter of the heat exchange tube is consistent with the inner diameter of the heat exchange chamber. The heat exchange tube, support plate and guide plate are integrally formed, and two pairs of support plates are arranged in a cross shape. The cross section of the guide plate is one-fifth of a circle, and the guide plates are arranged on the same circumference. The cross support is fixedly welded to the inner wall of the guide plate.

3. A continuous injection molding device according to claim 1, characterized in that: One end of the toggle spring facing the top ball seat is sealed, and one end of the toggle spring facing the connecting ring is integrally formed with a connecting pipe, and a guide pipe is provided on the side wall of the air chamber.

4. A continuous injection molding device according to claim 3, characterized in that: The size of the air seat matches the size of the air seat groove, the guide tube is arranged corresponding to the through hole, and when the heat exchange tube is actually installed, its air seat is embedded in the air seat groove, and the guide tube is inserted into the through hole, and the guide tube and the side wall of the through hole are sealed with sealant.

5. A continuous injection molding device according to claim 4, characterized in that: The port position of the air cavity is integrally formed with an air pipe connecting port, and the air pipe connecting port is connected to a primary air pipe and a secondary air pipe through a three-way connector. The primary air pipe and the secondary air pipe are respectively provided with a primary air valve and a secondary air valve, and the primary air pipe and the secondary air pipe are respectively connected to the air supply equipment and the air extraction equipment.

6. The continuous injection molding device according to claim 5, characterized in that: The shifting protrusion is an arc-shaped protrusion structure with a semicircular cross-section, and the edge lines of both sides of the top ball seat are chamfered.

7. The continuous injection molding device according to claim 6, characterized in that: The first-level mold body is provided with a threaded hole, and the second-level mold body is provided with a screw hole, and the screw holes and the threaded holes are arranged correspondingly, and the threaded holes, the screw holes and the liquid inlet cavity, the liquid return cavity, the heat exchange cavity, and the air cavity are all staggered.

8. An injection molding method according to any one of claims 1 to 7, characterized in that: The injection molding method of the continuous injection molding device comprises the following steps: Step 1: a process of closing the lower mold structure and the upper mold structure, wherein the lower mold structure and the upper mold structure are brought into contact with each other through a driving structure during the closing process; Step 2: an injection molding process of the injection molding device, wherein the injection molding device is used to inject the injection material into the mold cavity; Step 3: Cooling and shaping process of the injection molded part. During the cooling and shaping process of the injection molded part, the cooling water circulation system allows the cooling water to flow along the liquid inlet pipe, liquid inlet cavity, heat exchange pipe, liquid return cavity, and liquid return pipe, so that the heat of the injection molded part is taken away by the cooling water, thereby effectively improving the shaping efficiency of the injection molded part. Step 4: Demolding process. During the demoulding process, the lower mold structure and the upper mold structure are separated by starting the driving structure, and then the demoulding operation is performed.

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