Combined injection mold

Abstract

The present invention provides a combined injection mold, including an L-shaped A plate and an L-shaped B plate: wherein, a female mold core assembly is horizontally arranged on the protruding part of the L-shaped A plate, and a male mold core is horizontally arranged on the protruding part of the L-shaped B plate, and the female mold core assembly and the male mold core are corresponding in the up-and-down position; moreover, when the L-shaped A plate and the L-shaped B plate are horizontally inserted and adapted to each other, an injection cavity is formed between the lower surface of the female mold core assembly and the upper surface of the male mold core, and an insert to be injection-molded is arranged on the male mold core in the injection cavity. By using the combined injection mold provided by the present invention, the dilemma that there is no vertical machine at the production site and the horizontal machine needs to realize the function of the vertical machine can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, and more specifically, to a combined injection mold that can achieve the functions of a vertical machine on a horizontal machine. Background Art

[0002] An injection molding machine, also known as an injection molding press or an injection machine, is the main molding equipment for manufacturing various shaped plastic products by using a plastic molding mold for thermoplastic or thermosetting plastics.

[0003] The types of injection molding machines generally mainly include horizontal machines, vertical machines, and angular machines. According to the analysis of the mold industry situation, currently, the vast majority of injection molding machines are horizontal machines, with very few vertical machines and angular machines, or even none, because their practicability is not strong. When some special products need to be better produced by using a vertical machine, there is often a situation where due to the lack of a vertical machine or a limited number of vertical machines in the factory, large-scale production cannot be satisfied, resulting in the development of products and the design of molds being in a passive position, and the product may have to stop development accordingly. If the mold structure is improved from other aspects to assist in solving the problem of the lack of a vertical machine, it will inevitably complicate the mold structure, increase the mold cost, and the quality and yield of the product will also be affected accordingly.

[0004] The application of the mold has a great impact on the control of the quality and yield of the product. Especially for molds that need to place inserts, when using a vertical machine, the inserts are placed horizontally, and the positioning accuracy, stability, etc. of the inserts are all better for injection molding production; while if it is changed to a horizontal machine, the inserts are placed vertically, and due to their own weight, the inserts are very easy to fall or skew. In order to overcome this problem, it is necessary to add an air suction device, a positioning device, a signal transmission device, etc. to the mold design. Even so, it is very difficult for the product yield to reach the effect of using a vertical machine, which is the biggest factor affecting the quality of the molded product during the application of the current horizontal machine.

[0005] Therefore, there is an urgent need for an injection mold that can enable a horizontal machine to achieve the functions of a vertical machine. Summary of the Invention

[0006] In view of the above problems, the purpose of the present invention is to provide a combined injection mold that can horizontally place inserts on a horizontal machine and achieve the placement advantages of a vertical machine, so as to solve the dilemma that there is no vertical machine in the production site and the horizontal machine needs to achieve the functions of a vertical machine.

[0007] The combined injection mold provided by the present invention includes an L-shaped A plate and an L-shaped B plate: Among them, a female mold core assembly is horizontally arranged on the protruding part of the L-shaped A plate, and a male mold core is horizontally arranged on the protruding part of the L-shaped B plate. The female mold core assembly and the male mold core are corresponding in the up-and-down position; and when the L-shaped A plate and the L-shaped B plate are horizontally inserted and adapted to each other, an injection cavity is formed between the lower surface of the female mold core assembly and the upper surface of the male mold core, and the injection insert to be molded is arranged on the male mold core in the injection cavity.

[0008] In addition, a preferred solution is that the female mold core assembly includes a female mold slider vertically and slidably arranged on the protruding part of the L-shaped A plate. An inclined hole is opened on the female mold slider, and a bent pin is fitted in the inclined hole. The female mold slider vertically slides on the protruding part of the L-shaped A plate through the cooperation of the bent pin and the inclined hole.

[0009] In addition, a preferred solution is that a first fixing plate is slidably connected to the side of the L-shaped A plate far from the female mold slider through a guide post, and one end of the bent pin far from the female mold slider penetrates the L-shaped A plate and is fixedly connected to the first fixing plate.

[0010] In addition, a preferred solution is that a second fixing plate corresponding to the first fixing plate is arranged on the side of the L-shaped B plate far from the male mold core.

[0011] In addition, a preferred solution is that both between the L-shaped A plate and the L-shaped B plate and between the L-shaped A plate and the first fixing plate are detachably connected through a mechanical switch.

[0012] In addition, a preferred solution is that an ejection mechanism is arranged at the bottom of the L-shaped B plate, and an ejector pin is connected to the ejection mechanism. The upper end of the ejector pin penetrates the male mold core and extends into the injection cavity.

[0013] In addition, a preferred solution is that the ejection mechanism includes an oil cylinder fixed at the bottom of the L-shaped B plate, and an ejector pin plate is arranged at the output end of the oil cylinder. The lower end of the ejector pin is fixedly connected to the ejector pin plate.

[0014] In addition, a preferred solution is that a plastic injection rake is arranged on the male mold core directly above the ejector pin.

[0015] In addition, a preferred solution is that a cold / hot runner nozzle communicating with the injection cavity is arranged on one side of the L-shaped A plate or one side of the L-shaped B plate.

[0016] Using the above-mentioned combined injection mold according to the present invention, inserts can be horizontally placed on a horizontal machine, achieving the placement advantages of a vertical machine. This combined injection mold can be put into mass production in large quantities at low cost, without having to consider the problem of spending a high cost to purchase a vertical machine, and can effectively maximize the company's profits.

[0017] To achieve the above and related purposes, one or more aspects of the present invention include features that will be described in detail later and particularly pointed out in the claims. The following description and the accompanying drawings detail certain exemplary aspects of the present invention. However, these aspects merely indicate some of the various ways in which the principles of the present invention can be used. In addition, the present invention is intended to include all these aspects and their equivalents. Brief Description of the Drawings

[0018] By referring to the following description in conjunction with the accompanying drawings and the content of the claims, and with a more comprehensive understanding of the present invention, other objects and results of the present invention will become more apparent and easier to understand. In the drawings:

[0019] Figure 1 A perspective view of the combined injection mold according to the present invention is shown;

[0020] Figure 2 A front sectional view of the combined injection mold according to the present invention when horizontally interpenetrating and locking is shown;

[0021] Figure 3 A front sectional view of the combined injection mold according to the embodiment of the present invention when the bent pin is withdrawn is shown;

[0022] Figure 4 A front sectional view of the combined injection mold according to the embodiment of the present invention when the L-shaped A plate and the L-shaped B plate are separated is shown;

[0023] Figure 5 A perspective view of the L-shaped B plate according to the embodiment of the present invention is shown;

[0024] Figure 6 An exploded view of the mechanical switch according to the embodiment of the present invention is shown;

[0025] Figure 7 An assembled view of the mechanical switch according to the embodiment of the present invention is shown.

[0026] Reference numerals: L-shaped A plate 11, L-shaped B plate 12, bent pin 13, injection cold / hot nozzle 14, first fixed plate 15, oil cylinder 16, ejector plate 17, ejector pin 18, male mold core 19, female mold core 20, second fixed plate 21, guide post 22, inclined hole 23, main body of the mold closing and opening device 1, pull rod 2, inserting rod 3, rolling pin 4, movable block 5, compression spring 6, cover plate 7, locking screw 8, positioning pin 9.

[0027] In all the drawings, the same reference numerals indicate similar or corresponding features or functions. Detailed implementation manners

[0028] In the following description, for the purpose of illustration, in order to provide a comprehensive understanding of one or more embodiments, many specific details are set forth. However, it is obvious that these embodiments can also be implemented without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate the description of one or more embodiments.

[0029] It should be noted that in the technical description of the present invention, the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention; the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance; in addition, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0030] Before introducing the structure of the combined injection mold provided by the present invention in detail, it should be noted that in traditional vertical machine molds, when injecting, the two mold cores (including the male mold core and the female mold core) are horizontally arranged, and the two mold cores approach each other vertically up and down to form corresponding horizontal injection gaps. Obviously, since both mold cores are horizontally arranged, it is easier to place inserts (the inserts are placed flat on the male mold core or the female mold core); while in traditional horizontal machine molds, when injecting, relatively speaking, the two mold cores are vertically arranged, and the two mold cores approach each other horizontally left and right to form corresponding vertical injection gaps. Obviously, when placing the inserts on the vertically arranged mold cores, the inserts are likely to fall off. The design idea of the present invention is to enable the mold cores of the horizontal machine mold to also be horizontally designed. Specifically, the present invention realizes the purpose of horizontally designing the mold cores of the horizontal machine mold by rotating the two mold cores of the existing horizontal machine mold by 90°.

[0031] In order to make the purpose, technical solution and advantages of the present invention clearer, the following will describe the specific embodiments of the present invention in detail with reference to the drawings.

[0032] Figure 1 Shows the three-dimensional structure of the combined injection mold according to the present invention. Figure 2 Shows the main sectional view structure of the combined injection mold according to the present invention when horizontally interpenetrating and locking.

[0033] Combined with Figure 1 and Figure 2 It can be seen that the combined injection mold provided by the present invention includes an L-shaped A plate 11 and an L-shaped B plate 12 that can be buckled with each other left and right. The L-shaped A plate 11 and the L-shaped B plate 12 are placed centrally symmetrically. If the protruding part of the L-shaped A plate 11 is on the top (not marked in the figure), the protruding part of the L-shaped B plate 12 is on the bottom, so as to realize the left-right buckling of the two.

[0034] Specifically, a female mold core 20 assembly is horizontally arranged on the lower surface (a horizontal plane) of the protruding part of the L-shaped A plate 11, and a male mold core 19 is horizontally arranged on the upper surface (a horizontal plane) of the protruding part of the L-shaped B plate 12, so as to realize the vertical position correspondence between the female mold core 20 assembly and the male mold core 19.

[0035] During actual use, when the L-shaped A plate 11 and the L-shaped B plate 12 are horizontally interpenetrated and adapted to each other (that is, when buckled and locked with each other left and right), the lower surface of the female mold core 20 assembly approaches the upper surface of the male mold core 19, and a horizontal injection cavity (or injection gap) is formed between the lower surface of the female mold core 20 assembly and the upper surface of the male mold core 19. The insert to be injected is horizontally placed on the male mold core 19 in the injection cavity.

[0036] It should be noted that, considering the design of rotating the two mold cores by 90°, the A plate and the B plate are designed in an "L-shaped" interpenetrating style, and the two mold cores are arranged by using the protruding parts on the A and B plates, so as to realize the horizontal arrangement of the two mold cores.

[0037] Specifically, in order to separate the mold cores before mold opening to improve the success rate of mold opening, the female mold core 20 assembly specifically includes a female mold slider (corresponding to the female mold core 20) vertically slidably arranged on the protruding part of the L-shaped A plate 11. An inclined hole 23 is formed in the female mold slider, and a bent pin 13 is fitted in the inclined hole 23. The female mold slider vertically slides on the protruding part of the L-shaped A plate 11 through the cooperation of the bent pin 13 and the inclined hole 23.

[0038] More specifically, a first fixing plate 15 is slidably connected to the side of the L-shaped A plate 11 away from the female mold slider through a guide post 22. A guide hole adapted to the guide post 22 is formed in the L-shaped A plate 11. The first fixing plate 15 slides left and right on the side of the L-shaped A plate 11 through the cooperation of the guide post 22 and the guide hole. And, in order to realize the up and down (vertical) sliding of the female mold slider, one end of the bent pin 13 away from the female mold slider can penetrate through the L-shaped A plate 11 and be fixedly connected to the first fixing plate 15. During the actual operation process, when pulling the first fixing plate 15 to slide away from the L-shaped A plate 11 (corresponding to the left direction in the attached Figure 2 figure), the bent pin 13 slides left with the fixing plate. At this time, based on the action relationship between the bent pin 13 and the inclined hole 23, the female mold slider will slide upward, so as to realize the separation of the mold cores and facilitate the subsequent mold opening.

[0039] In addition, in order to facilitate the operation of the L-shaped B plate 12, a second fixing plate 21 corresponding to the first fixing plate 15 is arranged on the side of the L-shaped B plate 12 away from the male mold core 19, and the operation of the L-shaped B plate 12 is realized by pulling the second fixing plate 21.

[0040] It should be noted that during the actual injection molding process, when injecting the injection cavity or the injection gap, it is necessary to lock the L-shaped A plate 11 and the L-shaped B plate 12 in advance, and lock the L-shaped A plate 11 and the first fixing plate 15 to prevent glue leakage. In order to realize the locking between the L-shaped A plate 11 and the L-shaped B plate 12 and between the L-shaped A plate 11 and the first fixing plate 15, the L-shaped A plate 11 and the L-shaped B plate 12 and between the L-shaped A plate 11 and the first fixing plate 15 can be detachably connected through a mechanical switch, and the locking function between the L-shaped A plate 11 and the L-shaped B plate 12 is realized through the mechanical switch.

[0041] Specifically, Figure 6 shows the exploded structure of the mechanical switch provided by the embodiment of the present invention. Figure 7The figure showing the assembled structure of the mechanical switch according to an embodiment of the present invention, in combination with Figure 6 and Figure 7 it can be seen that the mechanical switch provided by the present invention includes a switch main body 1, a pull rod 2, a plug rod 3, and a self-locking mechanism provided inside the switch main body 1. During the actual installation process, the switch main body 1 needs to be fixedly installed on the L-shaped A plate through a positioning pin 9 and a locking screw 8. Then, the connecting end of the plug rod 3 is rotatably connected to the first fixing plate through a rotating shaft and a torsion spring (not shown in the figure). The elastic force of the torsion spring enables the plug rod 3 to have a counterclockwise (corresponding to Figure 6 ) torque. The connecting end of the pull rod 2 is rotatably connected to the L-shaped B plate through a rotating shaft and a torsion spring. The elastic force of the torsion spring enables the pull rod 2 to have a clockwise (corresponding to Figure 6 ) torque. When the entire device needs to be locked, the end of the plug rod 3 away from the first fixing plate and the end of the pull rod 2 away from the L-shaped B plate are inserted into the inside of the switch main body 1. Then, the locking between the L-shaped A plate and the L-shaped B plate is achieved through the matching relationship among the plug rod 3, the pull rod 2, and the self-locking mechanism.

[0042] More specifically, the self-locking mechanism includes a guide groove opened inside the switch main body 1. A movable block 5 is slidably connected in the guide groove, and one end of the movable block 5 is connected with a compression spring 6. And, a slot adapted to the end of the plug rod 3 away from the first fixing plate is opened on the movable block 5, and an arc groove is opened at the end of the pull rod 2 away from the L-shaped B plate. A rolling pin 4 adapted to the arc groove on the pull rod 2 is also provided inside the switch main body 1. During the actual use process, when both the plug rod 3 and the pull rod 2 extend into the inside of the switch main body 1, the end of the pull rod 2 contacts the rolling pin 4 and generates a squeezing force (realized by the rotational torque of the pull rod 2). As the pull rod 2 continues to be inserted into the inside of the switch main body 1, the rolling pin 4 on the pull rod 2 rolls into the arc groove, realizing the locking between the L-shaped A plate and the L-shaped B plate. And, as the end of the plug rod 3 away from the first fixing plate is inserted into the slot of the movable block 5, the plug rod 3 squeezes against the upper wall of the slot (realized by the rotational torque obtained by the plug rod) to generate a downward pressure on the movable block 5, further compressing the compression spring.

[0043] When the locking relationship between the L-shaped A plate and the L-shaped B plate needs to be unlocked, the plug rod 3 is pulled out from the slot. As the plug rod is pulled out, the compression spring resets and pushes the movable block 5 to move upward (at this time, the top of the movable block 5 is aligned with the end of the pull rod 2 up and down). As the movable block 5 moves upward, the movable block 5 will push the pull rod 2 to rotate upward, so that the rolling pin 4 disengages from the arc groove, realizing the unlocking between the L-shaped A plate and the L-shaped B plate.

[0044] In addition, to prevent foreign objects from entering the inside of the switch main body 1, thereby affecting the realization of the function of the self-locking mechanism, a cover plate 7 also needs to be provided on the switch main body 1 to protect the components inside the switch main body 1.

[0045] In addition, to achieve the demolding of the product, an ejection mechanism is provided at the bottom of the L-shaped B plate 12. A ejector pin 18 is connected to the ejection mechanism. The upper end of the ejector pin 18 penetrates through the male mold core 19 and extends into the injection cavity. After the injection is completed, when the L-shaped A plate 11 and the L-shaped B plate 12 are opened, the product can be ejected through the cooperation of the ejection mechanism and the ejector pin 18 to achieve the picking up of the product.

[0046] Specifically, to achieve the ejection function of the ejection mechanism, the ejection mechanism may include an oil cylinder 16 fixed to the bottom of the L-shaped B plate 12. A ejector pin plate 17 is provided at the output end of the oil cylinder 16. The lower end of the ejector pin 18 is fixedly connected to the ejector pin plate 17. During actual use, the output end of the cylinder drives the ejector pin plate 17 to move up and down, thereby realizing the ejection and recovery of the ejector pin 18.

[0047] In addition, it should also be noted that to inject plastic products with different structures, a plastic injection rake (equivalent to an injection runner) can be provided on the male mold core 19. By setting plastic injection rakes with different inner groove structures, the injection of plastic products with different structures can be realized. And, to facilitate the removal of the plastic injection rake, the plastic injection rake can be set at a position directly above the ejector pin 18.

[0048] Of course, to achieve the glue filling in the injection cavity, a nozzle needs to be set. The nozzle can be an inlet glue cold / hot nozzle 14 provided on one side of the L-shaped A plate 11 or one side of the L-shaped B plate 12 and communicating with the injection cavity.

[0049] To further illustrate the working principle of the combined injection mold provided by the present invention, Figure 3 The main view sectional structure of the combined injection mold according to the present invention when the angled pin 13 is withdrawn is shown, Figure 4 The main view sectional structure of the combined injection mold according to the present invention when the L-shaped A plate 11 and the L-shaped B plate 12 are separated is shown, Figure 5 The three-dimensional structure of the L-shaped B plate 12 according to the present invention is shown. Combining Figures 1 to 5 it can be seen that the mold opening action sequence of the combined injection mold provided by the present invention is as follows:

[0050] The first step is that in the mold closed state (as Figure 2 shown), pull open between the first fixed plate 15 and the L-shaped A plate 11. At this time, the first fixed plate 15 drives the angled pin 13 to move leftward. Based on the matching relationship between the angled pin 13 and the female mold slider, the female mold slider slides upward, thereby realizing the mold opening of the male and female mold cores 20 (as Figure 3 shown).

[0051] The second step is that the mold continues to open, and the L-shaped A plate 11 and the L-shaped B plate 12 are separated (as Figure 4 shown).

[0052] In the third step, after the mold is fully opened, the oil cylinder 16 starts to act, pushing the ejector plate 17 (cooperating with the ejector pin 18) to eject the injection molded product. If the mold needs to perform insert molding, the manipulator can be used to take out the product at this time and then horizontally place the insert on the male mold core 19.

[0053] In the fourth step, after the insert is placed, the mold controls the L-shaped A plate 11 and the L-shaped B plate 12 to close first through the mechanical mold closer (as Figure 3 shown).

[0054] In the fifth step, the first fixed plate 15 drives the female mold slider to close the mold, completing the final mold core closing (as shown in Figure 2).

[0055] It should be noted that since the insertion rod is connected to the first fixed plate 15, during the mold opening process, as the first fixed plate 15 and the L-shaped A plate 11 are opened, the insertion rod will also be disengaged from the slot of the movable block. After the insertion rod is disengaged from the slot, the movable block will move upward under the thrust of the compression spring, and the movable block will push the pull rod to rotate upward, so that the rolling pin 4 is disengaged from the arc-shaped groove, thereby realizing the unlocking between the L-shaped A plate and the L-shaped B plate 12. Similarly, during the mold closing process, as the first fixed plate 15 and the L-shaped A plate 11 approach, the insertion rod will be inserted into the slot of the movable block, generating a downward extrusion force on the movable block to further compress the compression spring; and as the pull rod is inserted into the mold closer main body, the rolling pin will be stuck into the arc-shaped groove on the pull rod, thereby realizing the locking between the L-shaped A plate and the L-shaped B plate 12.

[0056] As described above with reference to Figures 1 to 7 The combined injection mold according to the present invention is described by way of example. However, those skilled in the art should understand that various improvements can be made to the above-mentioned combined injection mold of the present invention without departing from the content of the present invention. Therefore, the protection scope of the present invention should be determined by the content of the appended claims.

Claims

1. A combined injection mold, characterized in that, it includes an L-shaped A plate and an L-shaped B plate: wherein, a female mold core assembly is horizontally arranged on the protruding part of the L-shaped A plate, and a male mold core is horizontally arranged on the protruding part of the L-shaped B plate, and the female mold core assembly and the male mold core are corresponding in the up and down positions; and, when the L-shaped A plate and the L-shaped B plate are horizontally inserted and adapted to each other, an injection cavity is formed between the lower surface of the female mold core assembly and the upper surface of the male mold core, and the injection insert to be molded is arranged on the male mold core in the injection cavity; a first fixing plate is arranged on the L-shaped A plate, a second fixing plate is arranged on the L-shaped B plate, and the L-shaped A plate and the L-shaped B plate are detachably connected by a mechanical switch; the mechanical switch includes a switch body, a pull rod, a plug rod and a self-locking mechanism arranged in the switch body, wherein, the switch body is fixed on the L-shaped A plate, the connecting end of the plug rod is rotatably connected with the first fixing plate, and the connecting end of the pull rod is rotatably connected with the L-shaped B plate; the self-locking mechanism includes a guiding groove opened inside the switch body, a movable block is slidably connected in the guiding groove, a compression spring is connected to one end of the movable block, a slot adapted to the end of the plug rod away from the first fixing plate is opened on the movable block, an arc groove is opened at the end of the pull rod away from the L-shaped B plate, and a rolling pin adapted to the arc groove is arranged inside the switch body; when the end of the plug rod away from the first fixing plate and the end of the pull rod away from the L-shaped B plate are inserted into the inside of the switch body: the end of the pull rod contacts the rolling pin and generates a squeezing force, and as the pull rod continues to be inserted into the inside of the switch body, the rolling pin rolls into the arc groove to realize the locking between the L-shaped A plate and the L-shaped B plate; and, as the end of the plug rod away from the first fixing plate is inserted into the slot of the movable block, the plug rod squeezes against the upper wall of the slot to generate a downward pressure on the movable block, further compressing the compression spring; when it is necessary to unlock the locking relationship between the L-shaped A plate and the L-shaped B plate, the plug rod is pulled out of the slot, and as the plug rod is pulled out, the compression spring resets and pushes the movable block to move up. At this time, the top of the movable block and the end of the pull rod are aligned up and down. As the movable block moves up, the movable block will push the pull rod to rotate upward, so that the rolling pin disengages from the arc groove, realizing the unlocking of the L-shaped A plate and the L-shaped B plate.

2. The combined injection mold according to claim 1, characterized in that, the female mold core assembly includes a female mold slider vertically slidably arranged on the protruding part of the L-shaped A plate, an inclined hole is opened on the female mold slider, a bent pin is adapted in the inclined hole, and the female mold slider vertically slides on the protruding part of the L-shaped A plate through the cooperation of the bent pin and the inclined hole.

3. The combined injection mold according to claim 2, characterized in that, The first fixed plate is slidably connected to the side of the L-shaped A plate away from the female mold slider through a guide post, and one end of the bent pin away from the female mold slider penetrates through the L-shaped A plate and is fixedly connected to the first fixed plate.

4. The combined injection mold according to claim 3, characterized in that the second fixed plate is arranged on the side of the L-shaped B plate away from the male mold core and corresponds to the first fixed plate.

5. The combined injection mold according to claim 1, characterized in that an ejection mechanism is arranged at the bottom of the L-shaped B plate, and an ejector pin is connected to the ejection mechanism. The upper end of the ejector pin penetrates through the male mold core and extends into the injection cavity.

6. The combined injection mold according to claim 5, characterized in that the ejection mechanism includes an oil cylinder fixed to the bottom of the L-shaped B plate, and an ejector pin plate is arranged at the output end of the oil cylinder. The lower end of the ejector pin is fixedly connected to the ejector pin plate.

7. The combined injection mold according to claim 5, characterized in that a plastic injection rake is arranged on the male mold core directly above the ejector pin.

8. The combined injection mold according to any one of claims 1 to 7, characterized in that a glue inlet cold / hot nozzle communicating with the injection cavity is arranged on one side of the L-shaped A plate or one side of the L-shaped B plate.

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