Injection mold for ejecting front and rear mold plates of front and rear defrosting air ducts

Abstract

The injection mold comprises a fixed mold fixing plate and a movable mold fixing plate which are provided with forming surfaces, and further comprises a fixed mold ejection mechanism and a movable mold ejection mechanism, the fixed mold ejection mechanism is used for demolding a product from a fixed mold, and the movable mold ejection mechanism is used for demolding the product from a movable mold. The fixed mold ejection mechanism comprises a first ejector plate and a first driving piece, a runner plate is fixedly connected to one side of the fixed mold fixing plate, the first ejector plate is slidably connected to the side face of the runner plate in the mold opening direction of the mold, and a first inclined rod is arranged on the first ejector plate; the first inclined rod penetrates through and is connected to the fixed mold fixing plate in a sliding mode in the mold opening direction inclined to the mold, and the first driving piece is used for driving the first ejector plate to move. The first ejector plate is connected to the side face of the runner plate in a sliding mode, and the fixed mold ejection mechanism does not interfere with a pouring system of the mold. And the first inclined rod moves in the mold opening direction perpendicular to the mold relative to the product to demold the buckle part of the product.

Description

Technical Field

[0001] The utility model relates to the field of injection molds, in particular to an injection mold for ejecting front and rear templates of front and rear defrosting air ducts. Background Art

[0002] Injection molds are one of the core equipment for producing plastic products. Their quality and performance directly affect production efficiency and product quality. The manufacturing technology of injection molds is also constantly developing and improving. Modern injection molds have the advantages of high precision, high processing efficiency and long service life. Injection molds are widely used in various industries, such as automobiles, home appliances, medical treatment, toys, etc.

[0003] Reference Figure 8 , respectively, the front defrost duct and the rear defrost duct. In the prior art, two molds are used for injection molding, but the production with two molds requires a lot of time and mold costs. However, the front defrost duct and the rear defrost duct have different buckle structures in different directions. When the buckle is not parallel to the mold opening direction and is perpendicular to the mold opening direction, conventional demolding and ejection cannot be performed through the movable mold.

[0004] The traditional fixed mold ejection structure, especially the inclined ejector mechanism, is generally very complex in structure and requires the design of an oil cylinder to provide a power source for the inclined ejector mechanism. This requires the design of oil circuits and other mechanisms in the mold, which is very complicated. Utility Model Content

[0005] In order to facilitate the demoulding of the snap-on parts of the two products, the present application provides a front and rear defrost duct front and rear template ejection injection mold.

[0006] The present application provides a front and rear defrost air duct front and rear template ejection injection mold adopts the following technical solution:

[0007] A front and rear defrost duct front and rear template ejection injection mold, comprising a fixed mold fixing plate and a movable mold fixing plate with molding surfaces, and also comprising a fixed mold ejection mechanism and a movable mold ejection mechanism, the fixed mold ejection mechanism is used to demould the product from the fixed mold, the movable mold ejection mechanism is used to demould the product from the movable mold, the fixed mold ejection mechanism comprises a first ejector plate and a first driving member, one side of the fixed mold fixing plate is fixedly connected to a flow channel plate, the first ejector plate is slidably connected to the side of the flow channel plate along the mold opening direction of the mold, the first ejector plate is provided with a first oblique rod, the first oblique rod is penetrated along an inclined direction inclined to the mold opening direction of the mold and is slidably connected to the fixed mold fixing plate, and the first driving member is used to drive the movement of the first ejector plate.

[0008] By adopting the above technical solution, the first ejector plate is slidably connected to the side of the runner plate, so that the fixed mold ejection mechanism does not interfere with the casting system of the mold; when the first driving member drives the first ejector plate to move toward the side of the fixed mold fixing plate, the first inclined rod is also moved toward the side of the product to eject the product and separate the product from the fixed mold fixing plate; because the sliding direction of the first inclined rod is inclined to the mold opening direction of the mold, when the first inclined rod moves toward the product relative to the fixed mold fixing plate, the first inclined rod moves relative to the product toward the side perpendicular to the mold opening direction of the mold to demold the buckle part on the product.

[0009] Preferably, the first driving member includes an abutment block, a pull rod and a first spring, a slide groove is provided on the first ejector plate, the abutment block is slidably connected in the slide groove along a mold opening direction perpendicular to the mold, the first spring is arranged in the slide groove, the first spring always drives the abutment block to move toward the side away from the bottom wall, the pull rod is fixedly connected to the movable mold fixing plate, the pull rod is provided with an abutment groove, and when the mold is in a mold closing state, the abutment block is located in the abutment groove.

[0010] By adopting the above technical solution, when the mold is opened, the fixed mold plate and the movable mold plate move to opposite sides, and the abutment block is located in the abutment groove, so that when the movable mold plate drives the pull rod to move, the pull rod pulls the abutment block to move together, so that the first ejector plate moves toward the fixed mold plate; when the first ejector plate moves to the fixed mold plate to the extreme position, the pulling force of the pull rod is converted into a thrust force, so that the abutment block slides toward the bottom wall of the slide groove, so that the abutment block is separated from the abutment groove, thereby completely separating the fixed mold plate from the movable mold plate.

[0011] Preferably, the end of the abutment block away from the bottom wall is arranged in a tapered shape from a side close to the fixed mold fixing plate to a side away from the fixed mold fixing plate.

[0012] By adopting the above technical solution, when the mold is closed, the end of the pull rod away from the movable mold fixed plate first abuts against the abutment block, causing the abutment block to move toward the bottom wall of the slide groove. When the pull rod moves to the point where the abutment block is facing the abutment groove, the first spring causes the pull rod to move toward the abutment groove.

[0013] Preferably, a guide block is provided on the fixed mold fixing plate, and a guide groove which can be plugged and matched with the pull rod is opened on the guide block. When the mold is in the mold closing state, the pull rod is plugged and matched with the guide groove.

[0014] By adopting the above technical scheme, the sliding of the pull rod is guided. During the mold closing process, the pull rod is gradually engaged with the guide groove to position and guide the movement of the pull rod, thereby reducing the possibility of deviation in the movement of the pull rod; the movement of the fixed mold fixing plate and the movable mold fixing plate can also be positioned and guided, thereby reducing the possibility of deviation in the movement of the movable mold fixing plate and the fixed mold fixing plate.

[0015] Preferably, an anti-collision component is also included, and the anti-collision component is used to reduce the possibility of collision between the inclined rod and the movable mold fixed plate during mold closing. The anti-collision component includes an anti-collision block, an anti-collision rod and a second spring. The anti-collision block is slidably connected to the movable mold fixed plate along the mold opening direction of the mold. The second spring is arranged on the anti-collision block, and the second spring always drives the anti-collision block to slide toward the side of the first ejector plate. The anti-collision rod is fixedly connected to the first ejector plate, and one end of the anti-collision plate penetrates the fixed mold plate. When the mold is in the mold closing state, the anti-collision block abuts against the anti-collision rod.

[0016] By adopting the above technical scheme, during the mold closing process, the anti-collision block and the anti-collision rod abut against each other, so that the anti-collision block and the anti-collision rod move to opposite sides at the same time. When the anti-collision rod moves, even if the first ejector plate moves toward the side away from the fixed mold fixing plate, the first inclined rod moves toward the side away from the movable mold fixing plate, thereby reducing the possibility of the first inclined rod and the movable mold fixing plate colliding during the mold closing process; when the mold is in the mold closing state, the first ejector plate moves to the extreme position toward the side away from the fixed mold fixing plate, and the anti-collision column still abuts against the anti-collision block, so that the anti-collision block slides toward the side of the movable mold fixing plate. Even if the second spring is compressed, it will not affect the mold closing product.

[0017] Preferably, the movable mold ejection mechanism includes a second ejector plate and a second driving member, the second ejector plate is slidably connected to the movable mold fixing plate along the mold opening direction of the mold, a plurality of second inclined rods are provided on the second ejector plate, the second inclined rods are obliquely arranged in the mold opening direction of the mold and are slidably connected to the movable mold fixing plate, and the second driving member is used to drive the sliding of the second ejector plate.

[0018] By adopting the above technical solution, the second driving member drives the second ejector plate to move toward the side close to the movable mold fixed plate, so that the second ejector plate drives the second inclined rod to move toward the product side to eject the product; because the sliding direction of the second inclined rod is inclined to the mold opening direction of the mold, when the second inclined rod moves toward the product side, the end of the second inclined rod away from the second ejector plate slides relative to the product toward the side perpendicular to the mold opening direction of the mold, so that the buckle part on the product is demolded.

[0019] Preferably, it also includes a lateral core-pulling mechanism, which is used for demolding the undercut structure on the side of the product. The lateral core-pulling mechanism includes a slider and an inclined guide column. The slider is slidably connected to the movable mold fixing plate along a mold opening direction perpendicular to the mold opening direction. The slider is provided with an inclined guide hole that can be plugged with the inclined guide column. The inclined guide column is fixedly connected to the fixed mold fixing plate along an opening direction inclined to the mold. When the mold is in a mold closing state, the inclined guide column is located in the inclined guide hole.

[0020] By adopting the above technical solution, when the mold is opened, the inclined guide pin gradually slides out of the inclined guide hole. Since the axial direction of the inclined guide pin is inclined to the opening direction of the mold, the slider slides toward the side away from the product through the guidance of the inclined guide pin, and the undercut part on the side of the product is demolded.

[0021] Preferably, a positioning block is fixedly connected to the sliding block, and a positioning groove which can cooperate with the positioning block is formed on the fixed mold fixing plate. When the mold is in a mold closing state, the positioning block is located in the positioning groove.

[0022] By adopting the above technical solution, during the mold closing process, the positioning block and the positioning groove gradually cooperate to position the position of the slider, thereby reducing the possibility that the slider fails to slide into place after the mold is closed.

[0023] The technical effects of this utility model are mainly reflected in the following aspects:

[0024] 1. The utility model sets a fixed mold ejection mechanism so that the first ejector plate is slidably connected to the side of the runner plate, so that the fixed mold ejection mechanism does not interfere with the pouring system of the mold; when the first driving member drives the first ejector plate to move toward the side of the fixed mold fixing plate, the first inclined rod also moves toward the side of the product to eject the product and separate the product from the fixed mold fixing plate; because the sliding direction of the first inclined rod is inclined to the mold opening direction of the mold, when the first inclined rod moves toward the side of the product relative to the fixed mold fixing plate, the first inclined rod moves relative to the product toward the side perpendicular to the mold opening direction of the mold to demold the buckle part on the product;

[0025] 2. The utility model is provided with a movable mold ejection mechanism, and the second driving member drives the second ejector plate to move toward the side close to the movable mold fixed plate, so that the second ejector plate drives the second inclined rod to move toward the product side, so as to eject the product; because the sliding direction of the second inclined rod is inclined to the mold opening direction of the mold, when the second inclined rod moves toward the product side, the end of the second inclined rod away from the second ejector plate slides relative to the product toward the side perpendicular to the mold opening direction of the mold, so as to demold the buckle part on the product;

[0026] 3. The utility model sets a lateral core-pulling mechanism. When the mold is opened, the inclined guide pin gradually slides out of the inclined guide hole. Because the axial direction of the inclined guide pin is inclined to the mold opening direction, the slider slides toward the side away from the product through the guidance of the inclined guide pin, and the undercut part on the side of the product is demoulded. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the structure of the first driving member of an embodiment of the present application.

[0029] Figure 3 is along Figure 2 Enlarged view of point A in the middle.

[0030] Figure 4 It is a schematic diagram of the structure of the anti-collision component of an embodiment of the present application.

[0031] Figure 5 is along Figure 4 Enlarged view of point B in the middle.

[0032] Figure 6 It is a schematic diagram of the structure of the movable mold fixed plate of the embodiment of the present application.

[0033] Figure 7 It is a schematic diagram of the structure of the fixed mold and fixed plate of an embodiment of the present application.

[0034] Figure 8 It is a schematic diagram of the product structure of the embodiment of the present application.

[0035] Explanation of the reference numerals: 1. fixed mold fixing plate; 11. guide block; 111. guide groove; 12. positioning groove; 13. runner plate; 2. movable mold fixing plate; 3. fixed mold ejection mechanism; 31. first ejector plate; 311. slide groove; 32. first inclined rod; 33. first driving member; 331. abutment block; 332. pull rod; 3321. abutment groove; 333. first spring; 4. movable mold ejection mechanism; 41. second ejector plate; 42. second inclined rod; 43. second driving member; 431. oil cylinder; 5. anti-collision assembly; 51. anti-collision block; 52. anti-collision rod; 53. second spring; 6. lateral core pulling mechanism; 61. slider; 611. inclined guide hole; 612. positioning block; 62. inclined guide column. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-8 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0037] The embodiment of the present application discloses a front and rear defrost air duct front and rear template ejection injection mold.

[0038] Reference Figure 1-Figure 7 The present embodiment provides a front and rear defrost duct front and rear template ejection injection mold, including a fixed mold fixing plate 1 and a movable mold fixing plate 2 with molding surfaces, and also includes a fixed mold ejection mechanism 3 and a movable mold ejection mechanism 4. The fixed mold ejection mechanism 3 is used to demold the product from the fixed mold, and the movable mold ejection mechanism 4 is used to demold the product from the movable mold.

[0039] Reference Figure 1-Figure 7The fixed mold ejection mechanism 3 includes a first ejector plate 31 and a first driving member 33. A flow channel plate 13 is fixedly connected to one side of the fixed mold fixing plate 1. The first ejector plate 31 is slidably connected to the side of the flow channel plate 13 along the mold opening direction of the mold. A first inclined rod 32 is slidably connected to the first ejector plate 31 along the mold opening direction perpendicular to the mold. The first inclined rod 32 is penetrated and slidably connected to the fixed mold fixing plate 1 along the mold opening direction inclined to the mold. The first driving member 33 is used to drive the movement of the first ejector plate 31. The first driving member 33 includes an abutment block 331, a pull rod 332 and a first spring 333. Slide grooves 311 are respectively provided on the side surfaces on both sides in the length direction of the first ejector plate 31. The two abutment blocks 331 are respectively slidably connected in the two slide grooves 311 along a mold opening direction perpendicular to the mold. The two first springs 333 are respectively located in the two slide grooves 311. The two ends of the first spring 333 in the axial direction are respectively abutted against the abutment block 331 and the bottom wall of the slide groove 311. The first spring 333 always drives the abutment block 331 to move toward the side away from the bottom wall. The two pull rods 332 are respectively fixedly connected to the movable mold fixing plate 2. The two pull rods 332 are respectively provided with abutment grooves 3321. When the mold is in the mold closing state, the abutment block 331 is located in the corresponding abutment groove 3321.

[0040] Reference Figure 1-Figure 7 , so that the first ejector plate 31 is slidably connected to the side of the runner plate 13, so that the fixed mold ejection mechanism 3 does not interfere with the casting system of the mold; when the first driving member 33 drives the first ejector plate 31 to move toward the side of the fixed mold fixing plate 1, the first inclined rod 32 is also moved toward the product side to eject the product and separate the product from the fixed mold fixing plate 1; because the sliding direction of the first inclined rod 32 is inclined to the mold opening direction of the mold, when the first inclined rod 32 moves toward the product side relative to the fixed mold fixing plate 1, the first inclined rod 32 moves relative to the product toward the side perpendicular to the mold opening direction of the mold to demold the buckle part on the product.

[0041] Reference Figure 1-Figure 7 When the mold is opened, the fixed mold fixing plate 1 and the movable mold fixing plate 2 move to opposite sides, and the abutment block 331 is located in the abutment groove 3321, so that when the movable mold fixing plate 2 drives the pull rod 332 to move, the pull rod 332 pulls the abutment block 331 to move together, so that the first ejector plate 31 moves toward the side of the fixed mold fixing plate 1; when the first ejector plate 31 moves to the extreme position toward the side of the fixed mold fixing plate 1, the pulling force of the pull rod 332 is converted into a thrust force, so that the abutment block 331 slides toward the bottom wall of the slide groove 311, so that the abutment block 331 is separated from the abutment groove 3321, thereby completely separating the fixed mold fixing plate 1 from the movable mold fixing plate 2.

[0042] Reference Figure 1-Figure 7The end of the abutment block 331 away from the bottom wall is gradually reduced from the side close to the fixed mold fixing plate 1 to the side away from the fixed mold fixing plate 1. When the mold is closed, the end of the pull rod 332 away from the movable mold fixing plate 2 first abuts against the abutment block 331, so that the abutment block 331 moves toward the bottom wall of the slide groove 311. When the pull rod 332 moves to the point where the abutment block 331 faces the abutment groove 3321, the first spring 333 moves the pull rod 332 toward the abutment groove 3321.

[0043] Reference Figure 1-Figure 7 Two guide blocks 11 are fixedly connected to the fixed mold plate 1. The guide blocks 11 are provided with guide grooves 111 that can be plugged with the tie rod 332. When the mold is in the mold closing state, the tie rod 332 is plugged with the guide groove 111. The sliding of the tie rod 332 is guided. When the mold is in the mold closing process, the tie rod 332 gradually plugs with the guide groove 111, and the movement of the tie rod 332 is positioned and guided to reduce the possibility of deviation in the movement of the tie rod 332; the movement of the fixed mold plate 1 and the movable mold plate 2 can also be positioned and guided to reduce the possibility of deviation in the movement of the movable mold plate 2 and the fixed mold plate 1.

[0044] Reference Figure 1-Figure 7 , also includes an anti-collision component 5, which is used to reduce the possibility of collision between the inclined rod and the movable mold fixed plate 2 during mold closing. The anti-collision component 5 includes multiple anti-collision blocks 51, multiple anti-collision rods 52 and multiple second springs 53. The multiple anti-collision blocks 51 correspond to the multiple anti-collision rods 52 and the multiple second springs 53. A plurality of accommodating grooves are provided on the movable mold fixed plate 2. The multiple anti-collision blocks 51 are respectively slidably connected in the corresponding accommodating grooves along the mold opening direction of the mold. The multiple second springs 53 are respectively located in the corresponding accommodating grooves. The two ends of the multiple second springs 53 are respectively abutted on the bottom wall of the accommodating groove and the anti-collision block 51. The second spring 53 always drives the anti-collision block 51 to slide toward the side of the first ejector plate 31. The anti-collision rod 52 is fixedly connected to the first ejector plate 31. One end of the anti-collision plate passes through the set mold fixed plate 1. When the mold is in the mold closing state, the anti-collision block 51 abuts against the anti-collision rod 52.

[0045] Reference Figure 1-Figure 7When the mold is in the mold closing process, the anti-collision block 51 and the anti-collision rod 52 abut against each other, so that the anti-collision block 51 and the anti-collision rod 52 move to opposite sides at the same time. When the anti-collision rod 52 moves, even if the first ejector plate 31 moves toward the side away from the fixed mold fixing plate 1, the first inclined rod 32 moves toward the side away from the movable mold fixing plate 2, thereby reducing the possibility of the first inclined rod 32 and the movable mold fixing plate 2 colliding during the mold closing process; when the mold is in the mold closing state, the first ejector plate 31 moves to the extreme position toward the side away from the fixed mold fixing plate 1, and the anti-collision column still abuts against the anti-collision block 51, so that the anti-collision block 51 slides toward the movable mold fixing plate 2. Even if the second spring 53 is compressed, it will not affect the mold closing product.

[0046] Reference Figure 1-Figure 7 The movable mold ejection mechanism 4 includes a second ejector plate 41 and a second driving member 43. The movable mold fixing plate 2 is fixedly connected to the rear panel through a plurality of cushion blocks. The second ejector plate 41 is slidably connected between the plurality of cushion blocks along the mold opening direction of the mold. The second ejector plate 41 is slidably connected with a plurality of second inclined rods 42 along the mold opening direction perpendicular to the mold. The second inclined rods 42 are obliquely arranged in the mold opening direction and slidably connected to the movable mold fixing plate 2. The second driving member 43 is used to drive the sliding of the second ejector plate 41. The second driving member 43 is a plurality of oil cylinders 431, which are fixedly connected to the rear mold panel. One end of the piston rod of the plurality of oil cylinders 431 is arranged through the rear mold panel and fixedly connected to the second ejector plate 41.

[0047] Reference Figure 1-Figure 7 The second ejector plate 41 is driven to move by the piston movement of the piston rod of the oil cylinder 431, so that the second ejector plate 41 moves toward the side close to the movable mold fixed plate 2, and the second ejector plate 41 drives the second inclined rod 42 to move toward the product side, so as to eject the product; because the sliding direction of the second inclined rod 42 is inclined to the mold opening direction of the mold, when the second inclined rod 42 moves toward the product side, the end of the second inclined rod 42 away from the second ejector plate 41 slides relative to the product toward the side perpendicular to the mold opening direction of the mold, so as to demold the buckle part on the product.

[0048] Reference Figure 1-Figure 7, and also includes a lateral core pulling mechanism 6, which is used for demoulding the undercut structure on the side of the product. The lateral core pulling mechanism 6 includes a plurality of sliders 61 and a plurality of inclined guide pillars 62. The plurality of flower sliders 61 correspond to the plurality of inclined guide pillars 62. The sliders 61 are slidably connected to the movable mold fixing plate 2 along a mold opening direction perpendicular to the mold. The sliders 61 are provided with inclined guide holes 611 that can be plugged with the inclined guide pillars 62. The inclined guide pillars 62 are fixedly connected to the fixed mold fixing plate 1 along a mold opening direction that is inclined to the mold. When the mold is in a mold closing state, the inclined guide pillars 62 are located in the inclined guide holes 611. A positioning block 612 is fixedly connected to the slider 61, and a positioning groove 12 that can be matched with the positioning block 612 is provided on the fixed mold fixing plate 1. When the mold is in a mold closing state, the positioning block 612 is located in the positioning groove 12.

[0049] Reference Figure 1-Figure 7 When the mold is opened, the inclined guide pin 62 gradually slides out of the inclined guide hole 611. Because the axial direction of the inclined guide pin 62 is inclined to the mold opening direction, the slider 61 slides toward the side away from the product through the guidance of the inclined guide pin 62 to demould the undercut part on the side of the product. When the mold is closed, the positioning block 612 gradually cooperates with the positioning groove 12 to locate the position of the slider 61, reducing the possibility that the slider 61 does not slide into place after the mold is closed.

[0050] Reference Figure 1-Figure 7 A plurality of ejectors are fixedly connected to the first ejector plate 31 and the second ejector plate 41, respectively. The ejectors on the first ejector plate 31 are arranged along the mold opening direction of the mold and are slidably connected to the fixed mold fixing plate 1, and the ejectors on the second ejector plate 41 are arranged along the mold opening direction of the mold and are slidably connected to the movable mold fixing plate 2. When the mold is opened, the movement of the first ejector plate 31 and the second ejector plate 41 drives the ejectors to move, so that the ejectors move toward one side of the product to eject the product.

[0051] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A front and rear defrosting air duct front and rear mold ejection injection mold, comprising a fixed mold fixing plate (1) with a molding surface and a movable mold fixing plate (2), characterized in that: The invention also comprises a fixed mold ejection mechanism (3) and a movable mold ejection mechanism (4), wherein the fixed mold ejection mechanism (3) is used to demould the product from the fixed mold, and the movable mold ejection mechanism (4) is used to demould the product from the movable mold, and the fixed mold ejection mechanism (3) comprises a first ejector plate (31) and a first driving member (33), one side of the fixed mold fixing plate (1) is fixedly connected to a flow channel plate (13), the first ejector plate (31) is slidably connected to the side surface of the flow channel plate (13) along the mold opening direction of the mold, the first ejector plate (31) is provided with a first inclined rod (32), the first inclined rod (32) is penetrated along an angle with respect to the mold opening direction of the mold and is slidably connected to the fixed mold fixing plate (1), and the first driving member (33) is used to drive the movement of the first ejector plate (31).

2. The front and rear template ejection injection mold of the front and rear defrosting air duct according to claim 1, characterized in that: The first driving member (33) includes a contact block (331), a pull rod (332) and a first spring (333). A slide groove (311) is provided on the first ejector plate (31). The contact block (331) is slidably connected in the slide groove (311) along a mold opening direction perpendicular to the mold. The first spring (333) is arranged in the slide groove (311). The first spring (333) always drives the contact block (331) to move toward a side away from the bottom wall. The pull rod (332) is fixedly connected to the movable mold fixing plate (2). A contact groove (3321) is provided on the pull rod (332). When the mold is in a mold closing state, the contact block (331) is located in the contact groove (3321).

3. The front and rear template ejection injection mold of the front and rear defrosting air duct according to claim 2, characterized in that: The end of the abutment block (331) away from the bottom wall is arranged in a tapered shape from a side close to the fixed mold fixing plate (1) to a side away from the fixed mold fixing plate (1).

4. The front and rear template ejection injection mold of the front and rear defrosting air duct according to claim 2, characterized in that: The fixed mold fixing plate (1) is provided with a guide block (11), and the guide block (11) is provided with a guide groove (111) which can be plugged and matched with the pull rod (332). When the mold is in a mold closing state, the pull rod (332) is plugged and matched with the guide groove (111).

5. The front and rear template ejection injection mold of the front and rear defrosting air duct according to claim 1, characterized in that: The invention also comprises an anti-collision component (5), wherein the anti-collision component (5) is used to reduce the possibility of collision between the inclined rod and the movable mold fixing plate (2) during mold closing. The anti-collision component (5) comprises an anti-collision block (51), an anti-collision rod (52) and a second spring (53). The anti-collision block (51) is slidably connected to the movable mold fixing plate (2) along the mold opening direction of the mold. The second spring (53) is arranged on the anti-collision block (51). The second spring (53) always drives the anti-collision block (51) to slide toward the first ejector plate (31). The anti-collision rod (52) is fixedly connected to the first ejector plate (31). One end of the anti-collision rod (52) penetrates the set mold fixing plate (1). When the mold is in the mold closing state, the anti-collision block (51) abuts against the anti-collision rod (52).

6. The front and rear template ejection injection mold of the front and rear defrosting air duct according to claim 1, characterized in that: The movable mold ejection mechanism (4) comprises a second ejector plate (41) and a second driving member (43); the second ejector plate (41) is slidably connected to the movable mold fixing plate (2) along the mold opening direction of the mold; a plurality of second inclined rods (42) are provided on the second ejector plate (41); the second inclined rods (42) are obliquely arranged in the mold opening direction and slidably connected to the movable mold fixing plate (2); and the second driving member (43) is used to drive the sliding of the second ejector plate (41).

7. The front and rear template ejection injection mold of the front and rear defrosting air duct according to claim 1, characterized in that: The invention also comprises a lateral core pulling mechanism (6), wherein the lateral core pulling mechanism (6) is used for demoulding the undercut structure on the side of the product, and the lateral core pulling mechanism (6) comprises a slider (61) and an inclined guide column (62). The slider (61) is slidably connected to the movable mold fixing plate (2) along a direction perpendicular to the mold opening direction of the mold, and an inclined guide hole (611) which can be plugged with the inclined guide column (62) is provided on the slider (61). The inclined guide column (62) is fixedly connected to the fixed mold fixing plate (1) along a direction inclined to the mold opening direction of the mold. When the mold is in a mold closing state, the inclined guide column (62) is located in the inclined guide hole (611).

8. The front and rear template ejection injection mold of the front and rear defrosting air duct according to claim 7, characterized in that: A positioning block (612) is fixedly connected to the sliding block (61), and a positioning groove (12) which can cooperate with the positioning block (612) is provided on the fixed mold fixing plate (1). When the mold is in a mold closing state, the positioning block (612) is located in the positioning groove (12).

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