Plastic manufacturing injection mold convenient to demold

Abstract

The utility model provides a plastic manufacturing injection mold convenient to demold, belongs to the field of injection molds, and aims to solve the problem that an existing plastic manufacturing injection mold cannot efficiently and uniformly cool a plastic product after injection molding, the plastic manufacturing injection mold comprises a protective frame and a through groove, and a hydraulic rod is fixedly mounted at the top of the protective frame; and the bottom end of the hydraulic rod is fixedly connected with an upper mold base, an upper mold plate is fixedly installed on the bottom end face of the upper mold base, and the top of the upper mold base is connected with an injection molding pipe. The upper die of the upper die base moves upwards to drive the upper die plate to move to be separated from the lower die plate, under the action of continuous upward movement of the upper die base, the traction rope can drive the threaded rod on the coil to rotate automatically, the connecting plate in threaded connection can drive the ejector rod to move upwards automatically, and at the moment, the ejector rod pushes the supporting plate to push the coil to move upwards. And the injection-molded plastic product can be pushed to automatically move upwards and is separated from the lower mold plate, so that the automatic demolding work is completed.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an injection mold for plastic manufacturing which is convenient for demoulding. Background Art

[0002] Plastic products are a variety of everyday items, industrial components, or devices manufactured from various plastic materials through processes such as heating, injection molding, extrusion, and compression molding. Plastic products are widely used in modern industry and daily life due to their advantages such as lightness, durability, strong formability, and low cost. Injection molds are key tools used in plastic manufacturing. They use high-pressure injection to inject molten plastic into the mold cavity to form the desired part or product.

[0003] However, existing injection molds for plastic manufacturing have some problems in the actual working process. For example, an injection mold for plastic products with publication number CN214266526U can push out the plastic products and realize the demolding operation of the plastic products during the working process, but it cannot perform efficient and uniform cooling treatment on the plastic products after injection molding before demolding. Therefore, in the subsequent demolding process, the plastic products that have not been completely solidified and cured are very likely to be deformed or even damaged. Moreover, after demolding, the staff need to directly grab the plastic products during the transfer process. Therefore, the plastic products are also prone to deformation or even damage during the grabbing and transfer process. Therefore, we have made improvements to this and proposed an injection mold for plastic manufacturing that is easy to demold. Utility Model Content

[0004] The purpose of the utility model is to address the problems that existing injection molds for plastic manufacturing cannot perform efficient and uniform cooling treatment on plastic products after injection molding, and cannot effectively prevent deformation or even damage of plastic products.

[0005] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0006] Plastic injection molds that are easy to demould are used to improve the above problems.

[0007] The specific application is as follows:

[0008] The top end face of said sliding panel also is provided with an interlocking structure, and the interlocking structure is designed to be spirally connected with the said sliding panel and the interlocking structure is spirally connected with the said sliding panel.

[0009] As a preferred technical solution of this application, the traction ropes are symmetrically distributed on both sides of the upper mold base, the traction ropes correspond one-to-one with the threaded rods through coils, and the push rods are symmetrically distributed on both sides of the top of the connecting plate.

[0010] As a preferred technical solution of the present application, the push rods correspond to the through slots and the magnetic frame one-to-one, the cross sections of the push rods and the magnetic frame are both rectangular, and the length of the push rods is greater than the thickness of the lower template.

[0011] As the preferred technical solution of the present application, a limiting frame is welded and fixed inside the fixed frame, a spiral spring is welded and fixed inside the limiting frame, the inner end of the spiral spring is welded and fixed on the threaded rod, the spiral spring and the threaded rod correspond one to one, an insulation box is welded and fixed on the inner bottom end surface of the protective frame, and a servo motor is welded and fixed on the bottom end surface of the protective frame.

[0012] As a preferred technical solution of the present application, the output end of the servo motor is connected to a screw rod, which is rotatably connected to the bottom of the protective frame and the bottom of the thermal insulation box through a sealed bearing. A conveying cylinder is welded and fixed on the internal top surface of the thermal insulation box, and the screw rod is rotatably connected in the conveying cylinder. The top of the conveying cylinder is connected to a liquid guide tube, and the top of the liquid guide tube is connected to a heat exchange tube. The heat exchange tube is welded and fixed to the outer wall of the lower template, and a refrigeration plate is installed on the thermal insulation box.

[0013] As the preferred technical solution of this application, the spiral rod is symmetrically distributed on both sides of the interior of the thermal insulation box, the spiral rod corresponds one-to-one with the liquid guide tube through the conveying tube, the length of the spiral rod is greater than the length of the conveying tube, and the bottom end of the liquid guide tube is connected to the middle part of the top of the conveying tube.

[0014] As the preferred technical solution of this application, the heat exchange tube is in the shape of a rectangular frame as a whole, and the rectangular inner wall of the heat exchange tube fits the outer wall of the lower template, and the tops of the liquid guide tubes on both sides are connected to the middle part of the side ends of the heat exchange tube.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the scheme of this application:

[0017] 1. The upper mold of the upper mold base moves upward, which can drive the upper mold base to move away from the lower mold base. Under the action of the upper mold base continuing to move upward, the threaded rod on the coil can be driven to rotate automatically by the traction rope, and the connecting plate connected by the thread can drive the ejector rod to move upward automatically. At this time, the ejector rod can push the plastic product after injection molding to move upward automatically by pushing the supporting plate, and separate from the lower mold base to complete the automatic demoulding work. In addition, the staff can conveniently transport the plastic product after injection molding by lifting the supporting plate, which makes up for the defect that the existing injection mold cannot be automatically demoulded, and solves the problem that the staff directly picks up the plastic product after molding, which causes it to be easily deformed or even damaged. It increases the diversity of use of the injection mold and improves the working efficiency of the injection mold.

[0018] 2. By rotating the screw rod on one side, the coolant in the insulation box can be transported to the heat exchange tube through the conveying tube and the liquid guide tube. Then, by rotating the screw rod on the other side, the coolant in the heat exchange tube can be transported to the insulation box through the liquid guide tube and the conveying tube. This reciprocating process completes the uniform circulation of the coolant. The coolant can be continuously cooled in conjunction with the refrigeration plate. The lower template after injection molding can be efficiently and evenly cooled and dissipated through the heat exchange tube, and the plastic products in the lower template after injection molding can be efficiently and evenly cooled, thereby ensuring that the plastic products can be completely solidified and cured, and that the plastic products can achieve sufficient stability before demolding, so as to facilitate the subsequent demolding work and the stability of the subsequent transportation work, thereby increasing the diversity and stability of the injection mold and further improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A schematic diagram of the overall three-dimensional structure of the injection mold for plastic manufacturing that is easy to demould provided in this application;

[0020] Figure 2 This is a schematic diagram of the overall main cross-sectional structure of the injection mold for plastic manufacturing that is easy to demould provided in this application;

[0021] Figure 3 The invention provides a convenient demoulding plastic injection mold for plastic manufacturing Figure 2 A in the middle is an enlarged structural diagram;

[0022] Figure 4 The invention provides a convenient demoulding plastic injection mold for plastic manufacturing Figure 2 The enlarged structural diagram at B in the middle;

[0023] Figure 5 This is a schematic diagram of the bottom cross-section structure of the injection mold for plastics manufacturing with convenient demoulding provided in this application;

[0024] Figure 6 A schematic diagram of the connection structure between the ejector pin and the magnetic frame of the injection mold for plastic manufacturing that facilitates demoulding provided in this application;

[0025] Figure 7 A schematic top-sectional view of a plastics injection mold for easy demoulding provided in this application;

[0026] Figure 8 This is a schematic diagram of the top view of the scroll spring structure of the injection mold for plastic manufacturing that is easy to demould provided in this application.

[0027] Markings in the figure: 1. Protective frame; 2. Hydraulic rod; 3. Upper mold base; 4. Upper mold plate; 5. Injection tube; 6. Fixed frame; 7. Traction rope; 8. Guide wheel; 9. Coil; 10. Threaded rod; 11. Connecting plate; 12. Ejector rod; 13. Through slot; 14. Support plate; 15. Magnetic frame; 16. Limit frame; 17. Vortex spring; 18. Insulation box; 19. Servo motor; 20. Screw rod; 21. Conveying cylinder; 22. Liquid guide tube; 23. Heat exchange tube; 24. Refrigeration plate; 25. Lower mold plate. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them.

[0029] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely represents some embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions therein can be combined with each other.

[0031] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0032] In the description of this utility model, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or the orientations or positional relationships in which the product is typically placed when in use, or the orientations or positional relationships commonly understood by those skilled in the art. Such terms are intended solely to facilitate the description of this utility model and simplify the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" and the like are used solely for distinction and description and should not be construed as indicating or implying relative importance.

[0033] Example 1:

[0034] like Figures 1-6 As shown, this embodiment proposes an injection mold for plastic manufacturing that is convenient for demoulding, including a protective frame 1 and a through groove 13. A hydraulic rod 2 is fixedly installed on the top of the protective frame 1, and the bottom end of the hydraulic rod 2 is fixedly connected to an upper mold base 3. An upper mold plate 4 is fixedly installed on the bottom end surface of the upper mold base 3. An injection tube 5 is connected to the top of the upper mold base 3. The injection tube 5 penetrates and is slidably connected to the top of the protective frame 1. A fixing frame 6 is welded and fixed on the inner bottom end surface of the protective frame 1. A lower mold plate 25 is fixedly installed on the top surface of the fixing frame 6. A traction rope 7 is fixedly connected to the side end of the upper mold base 3. The bottom of the fixing frame 6 A guide wheel 8 is installed on the side end face, and the traction rope 7 is limitedly slidably connected to the guide wheel 8. The traction rope 7 is slidably connected to the fixed frame 6. The bottom of the traction rope 7 is wrapped around the coil 9. A threaded rod 10 is welded and fixed on the coil 9. The threaded rod 10 is rotatably connected to the fixed frame 6. A connecting plate 11 is threadedly connected to the threaded rod 10. A top rod 12 is welded and fixed on the top surface of the connecting plate 11. A through groove 13 is opened at the bottom of the lower template 25 and the top of the fixed frame 6. A support plate 14 is limitedly slidably connected in the lower template 25, and the bottom of the support plate 14 is fixedly connected to the magnetic frame 15.

[0035] Example 2:

[0036] The solution in Example 1 is further introduced below in conjunction with a specific working method, as described below:

[0037] like Figures 1-6As shown, as a preferred embodiment, on the basis of the above method, further, the traction rope 7 is symmetrically distributed on both sides of the upper mold base 3, the traction rope 7 corresponds one-to-one with the threaded rod 10 through the coil 9, and the push rod 12 is symmetrically distributed on both sides of the top of the connecting plate 11, and the push rod 12 corresponds one-to-one with the through groove 13 and the magnetic frame 15 respectively. The cross-section of the push rod 12 and the cross-section of the magnetic frame 15 are both rectangular. The length of the push rod 12 is greater than the thickness of the lower template 25, and it can drive the upper template 4 to move away from the lower template 25. Under the action of the continued upward movement of the upper mold base 3, the traction rope 7 can drive the threaded rod 10 on the coil 9 to rotate automatically, and the connecting plate 11 connected by the thread can drive the push rod 12 to move upward automatically. At this time, the push rod 12 can push the plastic product after injection molding to move automatically upward by pushing the support plate 14, and separate from the lower template 25, completing the automatic demolding work.

[0038] like Figure 2 、 Figure 7 and Figure 8 As shown, as a preferred embodiment, on the basis of the above method, a limit frame 16 is further welded and fixed in the fixed frame 6, a spiral spring 17 is welded and fixed in the limit frame 16, the inner end of the spiral spring 17 is welded and fixed on the threaded rod 10, the spiral spring 17 corresponds to the threaded rod 10 one by one, and an insulation box 18 is welded and fixed on the inner bottom end surface of the protective frame 1, and a servo motor 19 is welded and fixed on the bottom end surface of the protective frame 1. The spiral spring 17 can drive the threaded rod 10 to rotate automatically in the opposite direction, thereby ensuring the automatic stability of the subsequent resetting work, thereby ensuring the stability and convenience of the subsequent repeated working state of the injection mold.

[0039] like Figure 1 、 Figure 2 、 Figure 4 and Figure 7 As shown, as a preferred embodiment, on the basis of the above method, further, the output end of the servo motor 19 is connected to a screw rod 20, and the screw rod 20 is rotatably connected to the bottom of the protective frame 1 and the bottom of the thermal insulation box 18 through a sealed bearing. A conveying cylinder 21 is welded and fixed on the internal top surface of the thermal insulation box 18, and the screw rod 20 is rotatably connected in the conveying cylinder 21. The top of the conveying cylinder 21 is connected to a liquid guide tube 22, and the top of the liquid guide tube 22 is connected to a heat exchange tube 23. The heat exchange tube 23 is welded and fixed to the outer wall of the lower template 25, and a refrigeration plate 24 is installed on the thermal insulation box 18. The refrigeration plate 24 can continuously cool the coolant, thereby ensuring the stability of the subsequent continuous working state of the coolant, thereby ensuring the convenience and stability of the subsequent cooling treatment work.

[0040] like Figure 2 、 Figure 4 and Figure 5As shown, as a preferred embodiment, on the basis of the above method, further, the spiral rods 20 are symmetrically distributed on both sides of the interior of the insulation box 18, the spiral rods 20 correspond one to one with the liquid guide tubes 22 through the conveying cylinder 21, the length of the spiral rods 20 is greater than the length of the conveying cylinder 21, the bottom end of the liquid guide tube 22 is connected to the middle part of the top of the conveying cylinder 21, the heat exchange tube 23 is a rectangular frame as a whole, and the rectangular inner wall of the heat exchange tube 23 is fitted with the outer wall of the lower template 25, and the tops of the liquid guide tubes 22 on both sides are connected to the middle part of the side ends of the heat exchange tube 23, through The rotation of the screw rod 20 on one side can transport the coolant in the insulation box 18 to the heat exchange tube 23 through the conveying cylinder 21 and the liquid guide tube 22. Then, the rotation of the screw rod 20 on the other side can transport the coolant in the heat exchange tube 23 to the insulation box 18 through the liquid guide tube 22 and the conveying cylinder 21. This reciprocating process completes the uniform circulation of the coolant. The heat exchange tube 23 can efficiently and evenly cool and dissipate the heat of the lower template 25 after injection molding, and thus the plastic product in the lower template 25 after injection molding can be efficiently and evenly cooled.

[0041] Specifically, when the injection mold for plastic manufacturing with convenient demoulding is in use: first, the staff can control to open the hydraulic rod 2 on the protective frame 1. At this time, under the driving action of the hydraulic rod 2, the upper mold base 3 can be pushed downward, that is, the upper mold descends until the upper mold base 3 and the upper mold plate 4 at the bottom are closed with the lower mold plate 25. Then the staff can perform injection molding in the molding cavity composed of the upper mold plate 4 and the lower mold plate 25 through the injection molding pipe 5. After injection molding, the staff can turn on the servo motors 19 on both sides of the bottom of the protective frame 1. At this time, under the driving action of the servo motors 19 on both sides, the screw rods 20 on both sides can be driven to rotate in the same direction. Since the screw rods 20 on both sides are symmetrically distributed, the spiral blades on the screw rods 20 on both sides rotate in opposite directions. At this time, under the action of the same direction rotation of the screw rods 20 on both sides, the screw rod 20 on one side can transport the coolant in the insulation box 18 to the liquid guide pipe 22 through the conveying cylinder 21, and then the coolant can be stably transported to the heat exchange pipe 23 through the liquid guide pipe 22. At the same time, under the rotation of the spiral rod 20 on the other side, the cooling liquid in the liquid guide tube 22 on the other side can be transported to the thermal insulation box 18 through the conveying cylinder 21 through the opposite spiral blades; at this time, the cooling liquid in the thermal insulation box 18 is transported to the heat exchange tube 23 through the liquid guide tube 22 on one side, and the cooling liquid in the heat exchange tube 23 is transported to the thermal insulation box 18 through the liquid guide tube 22 on the other side, completing the automatic circulation of the cooling liquid. During the continuous circulation of the cooling liquid, it can pass through the refrigeration fins 24 on both sides of the thermal insulation box 18. At this time, under the action of the refrigeration fins 24 on both sides, the cooling liquid in the thermal insulation box 18 can be continuously cooled, and in conjunction with the heat exchange tube 23, the lower template 25 after injection molding can be efficiently and evenly cooled and dissipated, and then the plastic product injection molded inside the lower template 25 can be efficiently and evenly cooled, thereby ensuring that the plastic product can be completely solidified and cured, and ensuring that the plastic product can achieve sufficient stability before demolding, so as to facilitate the smooth subsequent demolding work and the stability of subsequent transportation work;

[0042] After the plastic product is formed and cooled, the staff can drive the hydraulic rod 2 again to drive the upper mold base 3 to move upward, that is, the upper mold moves upward. At this time, the upper mold base 3 can drive the upper mold plate 4 to move upward and separate from the lower mold plate 25, and during the upward movement of the upper mold base 3, the traction rope 7 can be driven by the guide wheel 8 to drive the coil 9 to rotate automatically. At this time, under the rotation of the coil 9, the threaded rod 10 can be driven to rotate. Since the threaded rods 10 on both sides are symmetrically distributed, the threads on the threaded rods 10 on both sides are in opposite directions. Under the pulling action of the traction ropes 7 on both sides, the coils 9 on both sides can be driven to rotate automatically. The rotation in opposite directions drives the threaded rods 10 on both sides to rotate in opposite directions. At this time, under the simultaneous rotation of the threaded rods 10 on both sides, the threaded connecting plate 11 can be driven to move upward, and the top rods 12 on both sides of the top can be driven to move upward. After the top rods 12 move upward to a certain distance, they can pass through the through slots 13 and insert into the magnetic frame 15 at the bottom of the support plate 14. Therefore, after the upper mold base 3 can drive the upper mold plate 4 to move upward to separate from the lower mold plate 25, the top rods 12 can pass through the through slots 13 and insert into the magnetic frame 15 at the bottom of the support plate 14.

[0043] After the upper mold base 3 continues to move upward, the threaded rod 10 on the coil 9 is driven to continue rotating by the traction rope 7. At this time, the threaded rod 10 can push the support plate 14 on the magnetic frame 15 to automatically move upward through the push rod 12 on the connecting plate 11. At this time, under the movement of the support plate 14, the plastic product formed inside the lower template 25 can be pushed to move upward automatically until it moves away from the lower template 25, completing the automatic demoulding work. When the support plate 14 moves upward to above the lower template 25, the movement of the upper mold base 3 can be stopped. Then the staff can hold the support plate 14 and lift the support plate 14 upward until the magnetic frame 15 at the bottom of the support plate 14 moves away from the push rod 12. At this time, the staff can drive the plastic product for contactless transportation by taking the support plate 14, ensuring the convenience of subsequent processing of the plastic product, and solving the problem that the staff directly takes the newly formed plastic product, which is easy to deform or even break.

[0044] Then the staff can move the used support plate 14 to above the push rod 12, and engage the magnetic frame 15 at the bottom of the support plate 14 on the top of the push rod 12. Then, during the next injection molding operation, the hydraulic rod 2 drives the upper mold base 3 to move downward, so that the top of the traction rope 7 moves downward synchronously. At the same time, under the elastic action of the spiral spring 17 inside the limit frame 16, the threaded rod 10 can be driven to automatically rotate in the opposite direction, and the traction rope 7 can be automatically reeled up through the coil 9 to ensure the stability of the subsequent working state. Under the reverse rotation action of the threaded rod 10, the push rod 12 on the connecting plate 11 can drive the support plate 14 to automatically move downward and reset. Then the push rod 12 continues to move downward and can move out of the magnetic frame 15 to complete the reset work, ensuring the convenience and stability of subsequent repeated working states.

[0045] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above embodiments, the present invention is not limited to the above specific implementation methods. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and improvements that do not deviate from the spirit and scope of the utility model are included in the scope of the claims of the present invention.

Claims

1. A plastic injection mold for easy demoulding, comprising a protective frame (1) and a through groove (13), characterized in that: A hydraulic rod (2) is fixedly mounted on the top of the protection frame (1), the bottom end of the hydraulic rod (2) is fixedly connected to an upper die seat (3), an upper template (4) is fixedly mounted on the bottom end surface of the upper die seat (3), an injection tube (5) is connected to the top of the upper die seat (3), the injection tube (5) passes through and is slidably connected to the top of the protection frame (1), a fixing frame (6) is welded and fixed on the inner bottom end surface of the protection frame (1), a lower template (25) is fixedly mounted on the top end surface of the fixing frame (6), a traction rope (7) is fixedly connected to the side end of the upper die seat (3), a guide wheel (8) is mounted on the bottom side end surface of the fixing frame (6), and the traction rope (7) is limited and slidable. The invention relates to a traction rope (7) for rotatably connecting to a guide wheel (8); the traction rope (7) is connected to a fixed frame (6) by sliding through the traction rope (7); the bottom of the traction rope (7) is wound on a coil (9); a threaded rod (10) is welded and fixed on the coil (9); the threaded rod (10) is connected to the fixed frame (6) by rotation; a connecting plate (11) is threadedly connected to the threaded rod (10); a top rod (12) is welded and fixed on the top surface of the connecting plate (11); the through groove (13) is opened through the bottom of the lower template (25) and the top of the fixed frame (6); a support plate (14) is connected to the lower template (25) in a limited sliding manner; and a magnetic frame (15) is fixedly connected to the bottom of the support plate (14).

2. The easy-to-demold injection mold for plastic manufacturing according to claim 1, characterized in that: The traction rope (7) is symmetrically distributed on both sides of the upper die base (3), and the traction rope (7) corresponds to the threaded rod (10) one by one through the coil (9). The push rod (12) is symmetrically distributed on both sides of the top of the connecting plate (11).

3. The easy-to-demold injection mold for plastic manufacturing according to claim 1, characterized in that: The push rod (12) corresponds to the through slot (13) and the magnetic frame (15) one by one, the cross section of the push rod (12) and the cross section of the magnetic frame (15) are both rectangular, and the length of the push rod (12) is greater than the thickness of the lower template (25).

4. The easy-to-demold injection mold for plastic manufacturing according to claim 1, characterized in that: A limit frame (16) is welded and fixed inside the fixed frame (6), a vortex spring (17) is welded and fixed inside the limit frame (16), the inner end of the vortex spring (17) is welded and fixed on the threaded rod (10), and the vortex spring (17) corresponds to the threaded rod (10) one by one. A heat insulation box (18) is welded and fixed on the inner bottom end surface of the protective frame (1), and a servo motor (19) is welded and fixed on the bottom end surface of the protective frame (1).

5. The easy-to-demold injection mold for plastic manufacturing according to claim 4, characterized in that: The output end of the servo motor (19) is connected to a screw rod (20), and the screw rod (20) is rotatably connected to the bottom of the protective frame (1) and the bottom of the thermal insulation box (18) through a sealed bearing. A conveying cylinder (21) is welded and fixed on the internal top surface of the thermal insulation box (18). The screw rod (20) is rotatably connected in the conveying cylinder (21), and the top of the conveying cylinder (21) is connected to a liquid guide tube (22). The top of the liquid guide tube (22) is connected to a heat exchange tube (23), and the heat exchange tube (23) is welded and fixed to the outer wall of the lower template (25). A refrigeration plate (24) is installed on the thermal insulation box (18).

6. The easy-to-demold injection mold for plastic manufacturing according to claim 5, characterized in that: The spiral rod (20) is symmetrically distributed on both sides of the interior of the heat-isolating box (18). The spiral rod (20) corresponds one-to-one with the liquid guide tube (22) through the conveying cylinder (21). The length of the spiral rod (20) is greater than the length of the conveying cylinder (21). The bottom end of the liquid guide tube (22) is connected to the top middle part of the conveying cylinder (21).

7. The easy-to-demold injection mold for plastic manufacturing according to claim 6, characterized in that: The heat exchange tube (23) is in the shape of a rectangular frame as a whole, and the rectangular inner wall of the heat exchange tube (23) fits the outer wall of the lower template (25), and the tops of the liquid guide tubes (22) on both sides are connected to the middle part of the side ends of the heat exchange tube (23).

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