Use method of mold stripping ejection structure for plastic forming mold

Abstract

The invention relates to the technical field of mold ejection, and discloses a using method of a mold stripping ejection structure for a plastic forming mold, the mold stripping ejection structure comprises a fixed base, the two sides of the top of the fixed base are fixedly connected with fixed baffles correspondingly, the tops of the fixed baffles are fixedly connected with a first connecting frame, and the top of the first connecting frame is movably connected with a second connecting frame; the top of the second connecting frame is movably connected with a third connecting frame, when a mold is manufactured, an inverted buckle structure opposite to the mold opening direction is avoided as much as possible, and if the inverted buckle structure cannot be avoided, other design modes such as changing an inverted buckle into a slope structure can be considered, so that demolding can be smoothly performed during mold opening, and a simple product shape is designed; according to the invention, complex curved surfaces and corners are reduced, so that the mold manufacturing difficulty can be reduced, zero-degree mold stripping can be realized, a proper parting surface position can be selected, products can be smoothly separated during mold opening, the parting surface is selected at the maximum outline of the products as much as possible, and complex parting surface shapes are avoided.

Description

Technical Field

[0001] This invention relates to the field of mold ejection technology, specifically to a method of using an ejection structure for plastic molding molds. Background Technology

[0002] In plastic molding dies, the ejection structure is mainly used to remove the molded plastic part from the mold during the molding process. In traditional injection molding, in order to ensure that the plastic product can be demolded smoothly, a certain angle or slope is usually set on the draft surface of the mold. This angle or slope design can effectively reduce the friction between the mold and the plastic product, making it easier for the plastic product to detach from the mold.

[0003] However, traditional draft molding methods require complex angled structures during the ejection process, which increases the complexity of the mold and limits the design freedom of the product, thus affecting production efficiency and reducing productivity. Summary of the Invention

[0004] The purpose of this invention is to provide a method for using an ejector structure for plastic molding dies, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention is achieved through the following technical solution:

[0006] This invention relates to a method for using an ejection structure for a plastic molding die, comprising a fixed base, fixed baffles fixedly connected to the top two sides of the fixed base, a first connecting frame fixedly connected to the top of the fixed baffles, a second connecting frame movably connected to the top of the first connecting frame, a third connecting frame movably connected to the top of the second connecting frame, a fourth connecting frame movably connected to the top of the third connecting frame, and a fixed top plate movably connected to the top of the fourth connecting frame. It also includes a die ejection mechanism, comprising a feed port opened on the top of the fixed top plate, fixed frames movably connected to the two sides of the fixed top plate, adjusting frames movably connected to both ends of one side of the third connecting frame via screws, sliding columns slidably connected to the inner walls of the adjusting frames, and an ejection assembly provided on the top of the fixed base.

[0007] Furthermore, the ejection assembly includes a first transmission plate fixedly connected to the top of the fixed base, a second transmission plate fixedly connected to the top of the first transmission plate, and four rotating shafts rotatably connected to the inner wall of the second transmission plate.

[0008] Furthermore, four support springs are fixedly connected around the top of the second transmission plate near the rotating shaft, the rotating shaft is located inside the support springs, and a hinge is movably connected between the second connecting frame and the third connecting frame by screws. A connecting piece is movably connected to the side wall of the fixed base.

[0009] Furthermore, a stabilizing component is provided on the top of the fixed base. The stabilizing component includes four connecting columns fixedly connected to the top of the fixed base. One end of each connecting column passes through the fixed top plate and extends to the outside of the fixed top plate. A screw rod is threaded through and connected to both ends of one side of the fixed frame.

[0010] Furthermore, one end of the screw passes through the fixed top plate and extends into the interior of the fixed top plate. The second transmission plate is rotatably connected to the first transmission shaft near the top of the rotating shaft, and the second transmission plate is rotatably connected to the second transmission shaft near the top of the first transmission shaft. A through pipe is connected to the bottom of the feed inlet.

[0011] Furthermore, an injection molding assembly is provided at the bottom of the tube. The injection molding assembly includes an upper mold connected to the bottom of the tube, a support member movably connected to the bottom of the upper mold, and a lower mold movably connected to the bottom of the support member.

[0012] Furthermore, a connecting piece is fixedly connected to the bottom of the lower mold, and the bottom of the connecting piece is fixedly connected to the top of the inner wall of the second connecting frame. The mold body is movably connected through the top of the inner wall of the connecting piece.

[0013] Furthermore, a block is movably connected to the bottom of the mold body, and a vertical rod is fixedly connected to the bottom of the block. The end of the vertical rod away from the block is fixedly connected to the top of the second transmission plate.

[0014] Furthermore, a cooling assembly is provided on the side wall of the second connecting frame. The cooling assembly includes a lower condenser pipe that passes through and is fixedly connected to one side of the second connecting frame. One end of the lower condenser pipe is connected to an upper cooling pipe. One end of the upper cooling pipe passes through the third connecting frame and extends to the outside of the third connecting frame. The outer wall of one end of the upper cooling pipe is located on the inner wall of the support member.

[0015] A method for using an ejection structure for a plastic molding die includes the following steps:

[0016] Step 1: Drafting;

[0017] Step 2: Demolding;

[0018] Step 3: Zero-degree draft.

[0019] The present invention has the following beneficial effects:

[0020] (1) In this invention, when manufacturing the mold, the undercut structure opposite to the mold opening direction should be avoided as much as possible. If it cannot be avoided, other design methods can be considered, such as changing the undercut to a slope structure, so that it can be easily demolded when the mold is opened. The product shape should be simple and the complex curved surfaces and corners should be reduced. This can reduce the difficulty of mold manufacturing and also facilitate zero-degree demolding. The appropriate parting surface position should be selected to ensure that the product can be easily separated when the mold is opened. The parting surface should be selected as much as possible at the maximum contour of the product to avoid complex parting surface shapes. Simple and effective demolding mechanisms should be adopted, such as ejector pins and push plates. The number and position of the demolding mechanism should be reasonably arranged according to the shape and size of the product to ensure that the product is subjected to uniform force during demolding. The cooling mechanism should be reasonably designed. A proper cooling system is essential to ensure uniform cooling of the product within the mold. The design of the cooling system should consider the product's shape and size, as well as the mold's structure and materials. A good cooling system improves product quality and production efficiency, and also facilitates zero-degree demolding. High-precision machining equipment and processes are crucial to ensure the mold's dimensional accuracy and surface quality. Higher mold precision results in better product dimensional accuracy and surface quality, and also facilitates zero-degree demolding. After mold manufacturing, thorough debugging is necessary. During debugging, the demolding process should be closely monitored, and the position and force of the demolding mechanism should be adjusted promptly to ensure smooth demolding. Simultaneously, the mold's cooling and venting systems should be checked for proper functioning to guarantee product quality and production efficiency.

[0021] (2) This invention, through the design of the lower mold and the mold body, eliminates the need for complex demolding mechanisms such as sliders and angled ejectors, reducing the complexity and time consumption of the demolding action, thereby accelerating the production cycle. Since there is no complex demolding mechanism, mold maintenance costs are reduced, and maintenance time is correspondingly shortened. Simultaneously, mold reliability is improved, reducing downtime caused by demolding mechanism failures. Complex demolding mechanisms may damage the product during demolding, such as causing scratches or deformation. Zero-degree demolding avoids these problems, improving the product's appearance quality and dimensional accuracy. The simplified demolding process reduces the impact of human factors on product quality, making the product quality more stable and consistent. The mold structure of zero-degree demolding is relatively simple, with lower manufacturing difficulty and cost. The elimination of complex demolding mechanisms reduces the number of mold parts and processing difficulty.

[0022] (3) With the present invention, production costs are reduced accordingly due to increased production efficiency and improved product quality. At the same time, mold maintenance costs and scrap losses caused by product quality problems are reduced. Without the restriction of the demolding mechanism, product designers can design the shape and structure of the product more freely to meet different market demands. Mold designers can flexibly select mold structure and materials according to the characteristics of the product and production requirements, thereby improving the adaptability and reliability of the mold.

[0023] (4) In this invention, the device exerts less pulling force on the product during demolding, which can better maintain the dimensional stability of the product, reduce dimensional deviation caused by demolding stress, make the product size more accurate, meet the high-precision assembly requirements, and will not generate large friction and scratches with the mold during demolding, thereby reducing the probability of defects such as scratches, roughness, and dragging on the product surface, reducing surface deformation caused by improper demolding angle, improving the appearance quality of the product and making the product surface smoother and more beautiful.

[0024] (5) The device of the present invention has a smooth demolding speed and does not require complex demolding actions, which can greatly shorten the demolding time, improve production efficiency, and enable rapid continuous production. Especially for mass production, it can significantly increase production capacity. Moreover, the wear on the mold during demolding is small, which extends the service life of the mold, reduces the frequency of mold maintenance and replacement, and lowers production costs.

[0025] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the overall side structure of the present invention;

[0028] Figure 2 This is a schematic diagram of the exploded structure of the fixed top plate of the present invention;

[0029] Figure 3 This is a schematic cross-sectional view of the second connecting frame of the present invention;

[0030] Figure 4 This is a bottom view schematic diagram of the first transmission shaft structure of the present invention;

[0031] Figure 5 This is a schematic diagram of the side structure of the block of the present invention;

[0032] Figure 6 This is a top view of the cooling pipe structure of the present invention;

[0033] Figure 7 For the present invention Figure 3 Enlarged view of A in the middle;

[0034] Figure 8 For the present invention Figure 5 Enlarged view of B in the middle;

[0035] Figure 9 This is a schematic diagram of the method flow of the present invention.

[0036] The attached diagram lists the components represented by each number as follows:

[0037] In the diagram: 1. Fixed base; 2. Fixed baffle; 3. First connecting frame; 4. Second connecting frame; 5. Third connecting frame; 6. Fourth connecting frame; 7. Fixed top plate; 8. Mold ejection mechanism; 81. Inlet; 82. Fixed frame; 83. Adjusting frame; 84. Sliding column; 85. Ejection assembly; 86. Stabilizing assembly; 87. Injection assembly; 88. Cooling assembly; 851. First transmission plate; 852. Second transmission plate; 8 53. Rotating shaft; 854. Support spring; 855. Hinge; 856. Connecting component; 861. Connecting column; 862. Screw; 863. First drive shaft; 864. Second drive shaft; 865. Through pipe; 871. Connecting component; 872. Lower mold; 873. Support component; 874. Upper mold; 875. Mold body; 876. Block; 877. Vertical rod; 881. Lower condenser pipe; 882. Upper cooling pipe. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0039] Example 1, please refer to Figure 1 - Figure 9 As shown, the present invention is a method for using an ejection structure for a plastic molding die, including a fixed base 1, fixed baffles 2 fixedly connected to the top two sides of the fixed base 1, a first connecting frame 3 fixedly connected to the top of the fixed baffles 2, a second connecting frame 4 movably connected to the top of the first connecting frame 3, a third connecting frame 5 movably connected to the top of the second connecting frame 4, a fourth connecting frame 6 movably connected to the top of the third connecting frame 5, and a fixed top plate 7 movably connected to the top of the fourth connecting frame 6; and also includes;

[0040] The mold ejection mechanism 8 includes a feed port 81 opened on the top of the fixed top plate 7, fixed frames 82 are movably connected to both sides of the fixed top plate 7, and adjusting frames 83 are movably connected to both ends of one side of the third connecting frame 5 by screws. A sliding column 84 is slidably connected to the inner wall of the adjusting frame 83, and an ejection assembly 85 is provided on the top of the fixed base 1.

[0041] The ejection assembly 85 includes a first transmission plate 851 fixedly connected to the top of the fixed base 1, a second transmission plate 852 fixedly connected to the top of the first transmission plate 851, and four rotating shafts 853 rotatably connected to the inner wall of the second transmission plate 852.

[0042] Four support springs 854 are fixedly connected to the top of the second transmission plate 852 near the top of the rotating shaft 853. The rotating shaft 853 is located inside the support springs 854. The second connecting frame 4 and the third connecting frame 5 are movably connected by a hinge 855 through screws. The side wall of the fixed base 1 is movably connected to a connecting piece 856. This device exerts less pulling force on the product during demolding, which can better maintain the dimensional stability of the product, reduce dimensional deviations caused by demolding stress, make the product dimensions more accurate, meet the requirements of high-precision assembly, and will not generate much friction and scratches with the mold during demolding, thereby reducing the probability of defects such as scratches, roughness, and dragging on the product surface. It can also reduce surface deformation caused by improper demolding angle, improve the appearance quality of the product, and make the product surface smoother and more beautiful.

[0043] The top of the fixed base 1 is provided with a stabilizing component 86. The stabilizing component 86 includes four connecting columns 861 fixedly connected to the top of the fixed base 1. One end of the connecting column 861 passes through the fixed top plate 7 and extends to the outside of the fixed top plate 7. The two ends of one side of the fixed frame 82 are respectively threaded with screw rods 862.

[0044] One end of the screw 862 passes through the fixed top plate 7 and extends into the interior of the fixed top plate 7. The second transmission plate 852 is rotatably connected to the first transmission shaft 863 near the top of the rotating shaft 853. The second transmission plate 852 is rotatably connected to the second transmission shaft 864 near the top of the first transmission shaft 863. The bottom of the feed port 81 is connected to the through pipe 865.

[0045] In Example 2, an injection molding assembly 87 is provided at the bottom of the through pipe 865. The injection molding assembly 87 includes an upper mold 874 connected to the bottom of the through pipe 865. A support member 873 is movably connected to the bottom of the upper mold 874, and a lower mold 872 is movably connected to the bottom of the support member 873.

[0046] The bottom of the lower mold 872 is fixedly connected to a connecting piece 871. The bottom of the connecting piece 871 is fixedly connected to the top of the inner wall of the second connecting frame 4. The mold body 875 is movably connected through the top of the inner wall of the connecting piece 871.

[0047] A block 876 is movably connected to the bottom of the mold body 875. A vertical rod 877 is fixedly connected to the bottom of the block 876. The end of the vertical rod 877 away from the block 876 is fixedly connected to the top of the second transmission plate 852. When manufacturing the mold, try to avoid undercut structures opposite to the mold opening direction. If it cannot be avoided, other design methods can be considered, such as changing the undercut to a slope structure, so that it can be easily demolded when the mold opens. Design a simple product shape and reduce complex curved surfaces and corners. This can reduce the difficulty of mold manufacturing and also facilitate zero-degree demolding. Select a suitable parting surface position to ensure that the product can be separated smoothly when the mold opens. The parting surface should be selected as much as possible at the maximum contour of the product to avoid complex parting surface shapes. Use simple and effective demolding mechanisms, such as ejector pins and push plates. The number and position of demolding mechanisms should be reasonably arranged according to the shape and size of the product to ensure that the product is subjected to uniform force during demolding.

[0048] The side wall of the second connecting frame 4 is provided with a cooling component 88. The cooling component 88 includes a lower condenser pipe 881 that passes through and is fixedly connected to one side of the second connecting frame 4. One end of the lower condenser pipe 881 is connected to an upper cooling pipe 882. One end of the upper cooling pipe 882 passes through the third connecting frame 5 and extends to the outside of the third connecting frame 5. The outer wall of one end of the upper cooling pipe 882 is located on the inner wall of the support member 873. The cooling system is reasonably designed to ensure uniform cooling of the product in the mold. The design of the cooling system should take into account the shape and size of the product, as well as the structure and material of the mold. A good cooling system can improve the quality of the product and production efficiency, and also facilitate zero-degree demolding. High-precision processing equipment and processes are used to ensure the dimensional accuracy and surface quality of the mold. The higher the precision of the mold, the better the dimensional accuracy and surface quality of the product, and also facilitate zero-degree demolding. After the mold is manufactured, sufficient debugging work is carried out. During the debugging process, attention should be paid to observing the demolding situation of the product, and the position and force of the demolding mechanism should be adjusted in time to ensure that the product can be demolded smoothly. At the same time, the cooling system, exhaust system and other functions of the mold should also be checked to ensure the normal operation of the product and production efficiency.

[0049] A method for using an ejection structure for a plastic molding die includes the following steps:

[0050] Step 1: Drafting;

[0051] Step 2: Demolding;

[0052] Step 3: Zero-degree draft.

[0053] When using molds, avoid undercut structures that run in the opposite direction of mold opening. If this is unavoidable, consider alternative designs, such as replacing the undercut with a sloped structure, to facilitate smooth demolding. Design simple product shapes, reducing complex curved surfaces and corners to lower mold manufacturing difficulty and facilitate zero-degree demolding. Select appropriate parting line locations to ensure smooth separation during mold opening. The parting line should ideally be located at the product's maximum contour, avoiding complex parting line shapes. Employ simple and effective demolding mechanisms, such as ejector pins and push plates. The number and location of demolding mechanisms should be rationally arranged according to the product's shape and size to ensure uniform stress during demolding. A well-designed cooling system is also essential. A proper cooling system is essential to ensure uniform cooling of the product within the mold. The design of the cooling system should consider the product's shape and size, as well as the mold's structure and materials. A good cooling system improves product quality and production efficiency, and also facilitates zero-degree demolding. High-precision machining equipment and processes are crucial to ensure the mold's dimensional accuracy and surface quality. Higher mold precision results in better product dimensional accuracy and surface quality, and also facilitates zero-degree demolding. After mold manufacturing, thorough debugging is necessary. During debugging, the demolding process should be closely monitored, and the position and force of the demolding mechanism should be adjusted promptly to ensure smooth demolding. Simultaneously, the mold's cooling and venting systems should be checked for proper functioning to guarantee product quality and production efficiency.

[0054] By eliminating the need for complex demolding mechanisms such as lower mold 872 and mold body 875, complex demolding mechanisms like sliders and angled ejectors are no longer required. This reduces the complexity and time consumption of the demolding process, thus accelerating the production cycle. The absence of a complex demolding mechanism also lowers mold maintenance costs and reduces maintenance time. Furthermore, mold reliability is improved, reducing downtime caused by demolding mechanism failures. Complex demolding mechanisms can damage products during demolding, such as causing scratches or deformation. Zero-degree demolding avoids these problems, improving product appearance quality and dimensional accuracy. The simplified demolding process reduces the impact of human factors on product quality, resulting in more stable and consistent product quality. Zero-degree demolding molds have a relatively simple structure, lower manufacturing difficulty, and lower cost. The elimination of complex demolding mechanisms reduces the number of mold parts and the complexity of processing.

[0055] Increased production efficiency and improved product quality have led to a corresponding reduction in production costs. Simultaneously, reduced mold maintenance costs and waste due to product quality issues have decreased. Without the constraints of a demolding mechanism, product designers have greater freedom in designing product shapes and structures to meet diverse market demands. Mold designers can flexibly select mold structures and materials based on product characteristics and production requirements, enhancing mold adaptability and reliability.

[0056] This device exerts less pulling force on the product during demolding, better maintaining the product's dimensional stability and reducing dimensional deviations caused by demolding stress. This results in more accurate product dimensions, meeting high-precision assembly requirements. Furthermore, it avoids significant friction and scratching with the mold during demolding, thus reducing the probability of surface defects such as scratches, roughness, and dragging. It also reduces surface deformation caused by improper demolding angles, improving the product's appearance quality and making the surface smoother and more aesthetically pleasing.

[0057] The device features a smooth demolding speed, eliminating the need for complex demolding actions. This significantly reduces demolding time, improves production efficiency, and enables rapid continuous production. It is particularly effective for mass production, significantly increasing capacity. Furthermore, the demolding process causes minimal wear on the mold, extending its lifespan, reducing the frequency of mold repair and replacement, and lowering production costs.

[0058] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A mold ejection structure for a plastic molding mold, characterized in that: The invention comprises a fixed base (1), wherein both sides of the top of the fixed base (1) are respectively fixedly connected to fixed baffles (2), the top of the fixed baffle (2) is fixedly connected to a first connecting frame (3), the top of the first connecting frame (3) is movably connected to a second connecting frame (4), the top of the second connecting frame (4) is movably connected to a third connecting frame (5), the top of the third connecting frame (5) is movably connected to a fourth connecting frame (6), the top of the fourth connecting frame (6) is movably connected to a fixed top plate (7), and further comprises: A mold ejection mechanism (8), the mold ejection mechanism (8) comprising a feed port (81) opened on the top of a fixed top plate (7), fixed frames (82) are movably connected to both sides of the fixed top plate (7), one end of one side of the third connecting frame (5) is movably connected to an adjustment frame (83) by screws, the inner wall of the adjustment frame (83) is slidably connected to a sliding column (84), and an ejection assembly (85) is arranged on the top of the fixed base (1).

2. The ejection structure for a plastic molding mold according to claim 1, characterized in that: The ejection assembly (85) comprises a first transmission plate (851) fixedly connected to the top of the fixed base (1); the top of the first transmission plate (851) is fixedly connected to a second transmission plate (852); and the inner wall of the second transmission plate (852) is rotatably connected to four rotation shafts (853).

3. A mold ejection structure for a plastic molding mold according to claim 2, characterized in that: Four support springs (854) are fixedly connected to the top of the second transmission plate (852) near the rotating shaft (853) around each other, and the rotating shaft (853) is arranged inside the support springs (854). A hinge (855) is movably connected between the second connecting frame (4) and the third connecting frame (5) via screws, and a connecting piece (856) is movably connected to the side wall of the fixed base (1).

4. The ejection structure for a plastic molding mold according to claim 3, characterized in that: A stabilizing component (86) is provided on the top of the fixed base (1), and the stabilizing component (86) comprises a connecting column (861) fixedly connected to the top of the fixed base (1), and four connecting columns (861) are provided, one end of each connecting column (861) passes through the fixed top plate (7) and extends to the outside of the fixed top plate (7), and screw rods (862) are respectively passed through and threadedly connected at both ends of one side of the fixed frame (82).

5. The ejection structure for a plastic molding mold according to claim 4, characterized in that: One end of the screw rod (862) passes through the fixed top plate (7) and extends to the inside of the fixed top plate (7); the second transmission plate (852) is rotatably connected to the first transmission shaft (863) near the top of the rotating shaft (853); the second transmission plate (852) is rotatably connected to the second transmission shaft (864) near the top of the first transmission shaft (863); and the bottom of the feed port (81) is connected to a through pipe (865).

6. The ejection structure for a plastic molding mold according to claim 5, characterized in that: An injection molding assembly (87) is provided at the bottom of the through pipe (865), and the injection molding assembly (87) includes an upper mold (874) connected to the bottom of the through pipe (865), the bottom of the upper mold (874) is movably connected to a support member (873), and the bottom of the support member (873) is movably connected to a lower mold (872).

7. A mold ejection structure for a plastic molding mold according to claim 6, characterized in that: The bottom of the lower mold (872) is fixedly connected to a connecting piece (871), the bottom of the connecting piece (871) is fixedly connected to the top of the inner wall of the second connecting frame (4), and the top of the inner wall of the connecting piece (871) penetrates and is movably connected to the mold body (875).

8. The ejection structure for a plastic molding mold according to claim 7, characterized in that: The bottom of the mold body (875) is movably connected to a block (876), the bottom of the block (876) is fixedly connected to a vertical rod (877), and one end of the vertical rod (877) away from the block (876) is fixedly connected to the top of the second transmission plate (852).

9. The ejection structure for a plastic molding mold according to claim 8, characterized in that: A cooling assembly (88) is provided on the side wall of the second connecting frame (4), and the cooling assembly (88) includes a lower condenser tube (881) that passes through and is fixedly connected to one side of the second connecting frame (4), one end of the lower condenser tube (881) is connected to an upper cooling tube (882), one end of the upper cooling tube (882) passes through the third connecting frame (5) and extends to the outside of the third connecting frame (5), and the outer wall of one end of the upper cooling tube (882) is arranged on the inner wall of the support member (873).

10. A method for using a mold ejection structure for a plastic molding mold, using the mold ejection structure for a plastic molding mold as claimed in claim 9, characterized in that: The following steps are included: Step 1: Drafting; Step 2: demoulding; Step 3: Zero degree draft.

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