A reverse inner core pulling mechanism and injection mold

Abstract

The present invention discloses a reverse inner core pulling mechanism and an injection mold, and relates to the field of mold technology. The reverse inner core pulling mechanism includes a movable mold core, a first slider, a second slider, a shovel base, an inclined guide column, a driving member and a pressure strip. The shovel base is fixedly mounted on the first slider and fixedly connected to the inclined guide column. The inclined guide column extends into the second slider and slides with the second slider. The driving member is connected to the first slider. The movable mold core has a supporting surface, which is supported by the first slider. The supporting surface is provided with a receiving cavity. The pressure strip is fixedly connected in the receiving cavity. The second slider is arranged in the receiving cavity and slides with the pressure strip. Compared with the prior art, the reverse inner core pulling mechanism provided by the present invention can simplify the core pulling molding structure, facilitate assembly and maintenance, reduce mold costs, and make the core pulling process simple and reliable, shorten the core pulling time and product production cycle, and improve production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of molds, and in particular to a reverse inner core pulling mechanism and an injection mold. Background Art

[0002] At present, for the injection molding of hollow products (characterized by the interconnected middle area of ​​the surface), the traditional molding method is to use multiple sets of core-pulling parts to form a core-pulling system inside the product, and then perform core-pulling molding. This core-pulling molding method has the following pain points: the core-pulling structure is complex and difficult to assemble; many parts are required, and the mold cost is high; and the core-pulling process is complicated and takes a long time, which increases the product production cycle and reduces production efficiency. Summary of the invention

[0003] The problem solved by the invention is how to simplify the core pulling molding structure, facilitate assembly and maintenance, reduce mold costs, make the core pulling process simple and reliable, shorten the core pulling time and product production cycle, and improve production efficiency.

[0004] To solve the above problems, the technical solution of the present invention is achieved as follows:

[0005] In the first aspect, the present invention provides a reverse inner core pulling mechanism, comprising a movable mold core, a first slider, a second slider, a shovel base, an inclined guide column, a driving member and a pressure strip, wherein the shovel base is fixedly mounted on the first slider and fixedly connected to the inclined guide column, the inclined guide column extends into the second slider and slides with the second slider, the driving member is connected to the first slider, the movable mold core has a supporting surface, the supporting surface is supported by the first slider, the supporting surface is provided with a receiving cavity, the pressure strip is fixedly connected in the receiving cavity, the second slider is arranged in the receiving cavity and slides with the pressure strip, the first slider can be separated from the supporting surface under the drive of the driving member, so that the second slider slides along the pressure strip in a direction away from the supporting surface under the drive of the inclined guide column. Compared with the prior art, the reverse inner core pulling mechanism provided by the present invention can simplify the core pulling molding structure, facilitate assembly and maintenance, reduce mold cost, and make the core pulling process simple and reliable, shorten the core pulling time and product production cycle, and improve production efficiency.

[0006] Furthermore, the pressure strip is adjacently provided with a support surface and a matching surface, the second slider is placed on the support surface and slidably matched with the matching surface, and the matching surface and the abutting surface are arranged at a first preset angle, so that the second slider can cooperate with the pressure strip and slide along the extension direction of the pressure strip.

[0007] Furthermore, the first preset angle ranges from 5 degrees to 20 degrees, so as to reduce the sliding friction between the second slider and the pressure bar and improve the sliding efficiency of the second slider.

[0008] Furthermore, the pressure strip is also adjacently provided with a positioning surface and a fixing surface, the positioning surface is arranged opposite to the matching surface, the fixing surface is arranged opposite to the supporting surface, the positioning surface is flush with the abutting surface, the positioning surface and the matching surface are arranged at a first preset angle, and the fixing surface abuts against the movable mold core. The positioning surface is used to align the positions of the pressure strip and the movable mold core, so that the pressure strip is located at the opening edge of the accommodating cavity, and the bottom surface of the accommodating cavity in the movable mold core can support the fixing surface.

[0009] Furthermore, the matching surface is fixedly connected to the movable mold core, or the fixed surface is fixedly connected to the movable mold core, so as to fix the relative position of the pressure strip and the movable mold core and prevent the pressure strip from being separated from the accommodating cavity.

[0010] Furthermore, the second slider is adjacently provided with a first side surface and a second side surface, the first side surface is arranged on the support surface in a close fit, and the second side surface is slidably matched with the matching surface. The matching surface can guide the second side surface, thereby guiding the entire second slider.

[0011] Furthermore, the first side surface and the second side surface are perpendicular to each other, and the supporting surface and the matching surface are perpendicular to each other.

[0012] To improve the stability of the matching process.

[0013] Furthermore, the reverse inner core pulling mechanism also includes an elastic member, the second slider is provided with a receiving groove, the elastic member is arranged in the receiving groove, one end of the elastic member abuts against the bottom wall of the receiving groove, and the other end abuts against the movable mold core. The receiving groove can limit and guide the elastic member, and the elastic member can keep the position of the second slider unchanged after the inclined guide pillar is separated from the second slider.

[0014] Furthermore, the shovel base is provided with a limiting groove, the oblique guide column is fixedly connected to the bottom wall of the limiting groove, the second slider is arranged in the limiting groove and slidably cooperates with the oblique guide column. The limiting groove can limit the second slider to prevent the second slider from being displaced relative to the shovel base.

[0015] In the second aspect, the present invention provides an injection mold, including the above-mentioned reverse inner core pulling mechanism, which includes a movable mold core, a first slider, a second slider, a shovel base, an inclined guide column, a driving member and a pressure strip, the shovel base is fixedly mounted on the first slider and fixedly connected to the inclined guide column, the inclined guide column extends into the second slider and slides with the second slider, the driving member is connected to the first slider, the movable mold core has a supporting surface, the supporting surface is supported by the first slider, the supporting surface is provided with a receiving cavity, the pressure strip is fixedly connected in the receiving cavity, the second slider is arranged in the receiving cavity, and slides with the pressure strip, the first slider can be separated from the supporting surface under the drive of the driving member, so that the second slider slides along the pressure strip in a direction away from the supporting surface under the drive of the inclined guide column. The injection mold can simplify the core pulling molding structure, facilitate assembly and maintenance, reduce mold costs, and make the core pulling process simple and reliable, shorten the core pulling time and product production cycle, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the reverse inner core pulling mechanism according to the first embodiment of the present invention;

[0017] Figure 2 It is a schematic structural diagram of the first sliding block in the reverse inner core pulling mechanism according to the first embodiment of the present invention being connected to the inclined guide column through a shovel base;

[0018] Figure 3 It is a structural schematic diagram of the movable mold core in the reverse inner core pulling mechanism described in the first embodiment of the present invention;

[0019] Figure 4 It is a structural schematic diagram from a first perspective of the second sliding block in the reverse inner core pulling mechanism according to the first embodiment of the present invention, respectively slidably cooperating with the inclined guide column and the pressure strip;

[0020] Figure 5 It is a structural schematic diagram from a second perspective of the second slider in the reverse inner core pulling mechanism according to the first embodiment of the present invention, respectively slidingly cooperating with the inclined guide column and the pressure strip;

[0021] Figure 6 yes Figure 3 A partial enlarged view of the middle VI;

[0022] Figure 7 It is a structural schematic diagram from a third perspective of the second slider in the reverse inner core pulling mechanism described in the first embodiment of the present invention, respectively slidingly cooperating with the inclined guide column and the pressure strip;

[0023] Figure 8 It is a structural schematic diagram of a pressure strip in a reverse inner core pulling mechanism according to the first embodiment of the present invention;

[0024] Fig. 9 It is a structural schematic diagram of the second slider in the reverse inner core pulling mechanism according to the first embodiment of the present invention;

[0025] Fig.10 It is a schematic structural diagram of the injection mold described in the second embodiment of the present invention.

[0026] Description of reference numerals:

[0027] 10-injection mold; 100-reverse inner core pulling mechanism; 110-movable mold core; 111-supporting surface; 112-accommodating cavity; 113-bottom surface; 114-boss; 120-first slider; 130-second slider; 131-first side surface; 132-second side surface; 133-accommodating groove; 140-shovel base; 141-limiting groove; 150-inclined guide column; 160-driving member; 170-pressing strip; 171-supporting surface; 172-matching surface; 173-positioning surface; 174-fixing surface; 180-elastic member; 200-movable mold plate; 300-fixed mold plate; 400-movable mold base plate; 500-fixed mold base plate. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0029] First embodiment

[0030] Please refer to Figure 1 , Figure 2 and Figure 3 The embodiment of the present invention provides a reverse inner core pulling mechanism 100 for core pulling molding of products. It can simplify the core pulling molding structure, facilitate assembly and maintenance, reduce mold costs, and make the core pulling process simple and reliable, shorten the core pulling time and product production cycle, and improve production efficiency. In this embodiment, the reverse inner core pulling mechanism 100 is used for core pulling molding of hollow products. The reverse inner core pulling mechanism 100 can move toward the inner direction of the product to realize the core pulling operation, and the entire core pulling process is simple, fast, stable and reliable.

[0031] The reverse inner core pulling mechanism 100 includes a movable mold core 110, a first slider 120, a second slider 130, a shovel base 140, an inclined guide column 150, a driving member 160, a pressure strip 170 and an elastic member 180. The shovel base 140 is fixedly mounted on the first slider 120 and is fixedly connected to the inclined guide column 150. The inclined guide column 150 extends into the second slider 130 and is slidably matched with the second slider 130. The movement of the inclined guide column 150 can drive the second slider 130 to move. The driving member 160 is connected to the first slider 120, and the driving member 160 can drive the first slider 120 to move in a direction away from the movable mold core 110. The movable mold core 110 has a supporting surface 111, and the supporting surface 111 can be supported by the first slider 120 to facilitate the molding of the product. The abutting surface 111 is provided with a receiving cavity 112, the pressure strip 170 is fixedly connected in the receiving cavity 112, the second slider 130 is arranged in the receiving cavity 112, and is slidably matched with the pressure strip 170, and the pressure strip 170 can limit the movement direction of the second slider 130. The first slider 120 can be separated from the abutting surface 111 under the drive of the driving member 160, so that the second slider 130 can slide along the pressure strip 170 in a direction away from the abutting surface 111 under the drive of the inclined guide column 150, that is, move toward the inner direction of the movable mold core 110. The elastic member 180 is connected to the second slider 130 and abuts against the movable mold core 110. The elastic member 180 is always in a compressed state to continuously apply elastic force to the second slider 130, so that the position of the second slider 130 remains unchanged after the inclined guide column 150 is separated from the second slider 130, thereby ensuring that the inclined guide column 150 can accurately extend into the second slider 130 during the resetting process.

[0032] In this embodiment, the driving member 160 is a hydraulic cylinder, and the driving member 160 can use hydraulic oil for transmission to drive the first slider 120 to move. However, this is not limited to this. In other embodiments, the driving member 160 can also be a cylinder or an electric push rod, and the structure of the driving member 160 is not specifically limited.

[0033] In this embodiment, the elastic member 180 is a spring to reduce production costs, but it is not limited thereto. In other embodiments, the elastic member 180 may also be a rubber block or a silicone block, and the material of the elastic member 180 is not specifically limited.

[0034] Please refer to Figure 4 and Figure 5It should be noted that, during the core pulling process, the driving member 160 drives the first slider 120 to move in a direction away from the abutting surface 111. For the convenience of description, the movement direction of the first slider 120 is expressed as a first direction, represented by F1. The first direction is perpendicular to the abutting surface 111 and is directed away from the movable mold core 110. At the same time, the first slider 120 drives the inclined guide column 150 to move in the first direction through the shovel base 140. During this process, the inclined guide column 150 slides relative to the second slider 130 to apply a thrust to the second slider 130, pushing the second slider 130 to move along the pressure strip 170 toward the inner direction of the movable mold core 110. For the convenience of description, the movement direction of the second slider 130 is expressed as a second direction, represented by F2. The second direction is the extension direction of the pressure strip 170. The second direction is decomposed to obtain a first sub-direction parallel to the abutting surface 111 and a second sub-direction perpendicular to the abutting surface 111. The first sub-direction is represented by F3, and the second sub-direction is represented by F4. Specifically, the second sub-direction is opposite to the first direction, that is, the first slider 120 moves in a direction away from the movable mold core 110 , and the second slider 130 moves in a direction toward the inside of the movable mold core 110 .

[0035] Please refer to Figure 6 , Figure 7 , Figure 8 and Fig. 9 It is worth noting that the pressure strip 170 is in a strip shape, and is provided with a supporting surface 171, a matching surface 172, a positioning surface 173 and a fixing surface 174. Among them, the supporting surface 171, the matching surface 172, the fixing surface 174 and the positioning surface 173 are connected end to end, that is, the supporting surface 171 and the matching surface 172 are arranged adjacent to each other, the positioning surface 173 and the fixing surface 174 are arranged adjacent to each other, the positioning surface 173 and the matching surface 172 are arranged opposite to each other, and the fixing surface 174 and the supporting surface 171 are arranged opposite to each other. The second slider 130 is placed on the supporting surface 171 and slidably cooperates with the matching surface 172. The supporting surface 171 can support the second slider 130, and the matching surface 172 can limit the sliding direction of the second slider 130. The positioning surface 173 is flush with the abutting surface 111, and the fixing surface 174 abuts against the movable mold core 110. The positioning surface 173 is used to align the positions of the pressure strip 170 and the movable mold core 110, so that the pressure strip 170 is located at the opening edge of the accommodating cavity 112, and the bottom surface 113 of the accommodating cavity 112 in the movable mold core 110 can support the fixing surface 174.

[0036] It should be noted that the mating surface 172 and the abutting surface 111 are arranged at a first preset angle, that is, the mating surface 172 and the positioning surface 173 are arranged at a first preset angle, and the plane where the second direction is located is the mating surface 172. Specifically, the first preset angle ranges from 5 degrees to 20 degrees, so that the second slider 130 and the pressure strip 170 can be matched and the sliding friction between the second slider 130 and the pressure strip 170 can be reduced. In this embodiment, the first preset angle is 12 degrees, but it is not limited to this. In other embodiments, the first preset angle can be 5 degrees or 20 degrees, and the degree of the first preset angle is not specifically limited.

[0037] In this embodiment, a boss 114 is provided in the receiving cavity 112 of the movable mold core 110, the top surface of the boss 114 is slidably matched with the second slider 130, the side surface of the boss 114 is in contact with the matching surface 172, and the matching surface 172 is fixedly connected to the boss 114 of the movable mold core 110 to fix the relative position of the pressure strip 170 and the movable mold core 110 to prevent the pressure strip 170 from being separated from the receiving cavity 112. However, it is not limited to this, and in other embodiments, the relative position of the pressure strip 170 and the movable mold core 110 can also be fixed by fixing the fixing surface 174 to the movable mold core 110, and at this time, the fixing surface 174 is fixedly connected to the bottom surface 113 of the receiving cavity 112.

[0038] In this embodiment, the accommodating cavity 112 is tilted on the abutting surface 111, that is, the bottom surface 113 of the accommodating cavity 112 is set at a second preset angle with the horizontal plane. Since the pressure strip 170 is fitted on the bottom surface 113 of the accommodating cavity 112, the pressure strip 170 is set at the second preset angle with the horizontal plane, and the second direction and the first sub-direction and the second sub-direction are all set at the second preset angle with the horizontal plane to adapt to the shape of the product. However, it is not limited to this. In other embodiments, the bottom surface 113 of the accommodating cavity 112 can also be set on the horizontal plane, that is, the second preset angle is zero. The degree of the second preset angle is not specifically limited and needs to be determined according to the actual product.

[0039] It should be noted that the second slider 130 is adjacently provided with a first side surface 131 and a second side surface 132. The first side surface 131 is arranged on the support surface 171, and the first side surface 131 can slide relative to the support surface 171, and the second side surface 132 is slidably matched with the matching surface 172, and the matching surface 172 can guide the second side surface 132, thereby guiding the entire second slider 130. In this embodiment, the first side surface 131 and the second side surface 132 are perpendicular to each other, and the support surface 171 and the matching surface 172 are perpendicular to each other, so as to improve the stability of the matching process.

[0040] In this embodiment, the second slider 130 is provided with a receiving groove 133, and the elastic member 180 is disposed in the receiving groove 133. The receiving groove 133 can limit and guide the elastic member 180, prevent the elastic member 180 from being separated from the receiving groove 133, and ensure that the elastic force direction of the elastic member 180 is axial. One end of the elastic member 180 abuts against the bottom wall of the receiving groove 133, and the other end abuts against the movable mold core 110, that is, against the side wall of the receiving cavity 112. The elastic member 180 is always in a compressed state to keep the position of the second slider 130 unchanged after the inclined guide pillar 150 is separated from the second slider 130, so that the inclined guide pillar 150 can accurately extend into the second slider 130 during the resetting process and slide with the second slider 130.

[0041] In this embodiment, the shovel base 140 is provided with a limiting groove 141, the oblique guide column 150 is fixedly connected to the bottom wall of the limiting groove 141, and the second slider 130 is disposed in the limiting groove 141 and slidably cooperates with the oblique guide column 150. The second slider 130 can slide into the limiting groove 141 and abut against the bottom wall of the limiting groove 141, and the limiting groove 141 can limit the second slider 130 to prevent the second slider 130 from being displaced relative to the shovel base 140.

[0042] During the core pulling process of the reverse inner core pulling mechanism 100, the driving member 160 drives the first slider 120 to move in the first direction. At the same time, the first slider 120 drives the inclined guide column 150 to move in the first direction through the shovel base 140. The inclined guide column 150 applies a thrust to the second slider 130, so that the second slider 130 moves in the second direction under the action of the pressure strip 170. During this process, the elastic member 180 gradually stretches and resets, that is, the deformation of the elastic member 180 gradually decreases. When the elastic member 180 stretches to the limit position, the inclined guide column 150 and the second slider are 130 disengages and continues to move in the first direction. At this time, one end of the elastic member 180 abuts against the bottom wall of the accommodating groove 133, and the other end abuts against the side wall of the accommodating cavity 112. The side of the second slider 130 away from the elastic member 180 abuts against the other side wall opposite to the accommodating cavity 112. The elastic member 180 is still in a compressed state. The elastic member 180 applies elastic force to the second slider 130 to fix the position of the second slider 130 relative to the accommodating cavity 112, thereby ensuring that the inclined guide column 150 can accurately extend into the second slider 130 during the resetting process.

[0043] During the resetting process of the reverse inner core pulling mechanism 100, the driving member 160 drives the first slider 120 to move in the opposite direction of the first direction. At the same time, the first slider 120 drives the inclined guide column 150 to move in the opposite direction of the first direction through the shovel base 140. The inclined guide column 150 extends into the second slider 130. Then the inclined guide column 150 continues to move in the opposite direction of the first direction, driving the second slider 130 to overcome the elastic force of the elastic member 180 and move in the opposite direction of the second direction. During this process, the elastic member 180 gradually shortens, that is, the deformation of the elastic member 180 gradually increases. When the elastic member 180 shortens to the extreme position, the second slider 130 extends into the limiting groove 141 and abuts against the bottom wall of the limiting groove 141. At this time, the abutting surface 111 of the movable mold core 110 abuts against the first slider 120, and the resetting is completed, so as to facilitate the molding of the product.

[0044] The reverse inner core pulling mechanism 100 described in the embodiment of the present invention, the shovel base 140 is fixedly installed on the first slider 120 and fixedly connected to the inclined guide column 150, the inclined guide column 150 extends into the second slider 130 and slidably cooperates with the second slider 130, the driving member 160 is connected to the first slider 120, the movable mold core 110 has a supporting surface 111, the supporting surface 111 is abutted against the first slider 120, the supporting surface 111 is provided with an accommodating cavity 112, the pressure strip 170 is fixedly connected in the accommodating cavity 112, the second slider 130 is arranged in the accommodating cavity 112, and slidably cooperates with the pressure strip 170, the first slider 120 can be separated from the supporting surface 111 under the drive of the driving member 160, so that the second slider 130 slides along the pressure strip 170 in a direction away from the supporting surface 111 under the drive of the inclined guide column 150. Compared with the prior art, the reverse inner core pulling mechanism 100 provided by the present invention adopts a first slider 120 connected to the driving member 160 and an inclined guide column 150 and a pressure strip 170 that slide with the second slider 130. Therefore, it can simplify the core pulling molding structure, facilitate assembly and maintenance, reduce mold costs, and make the core pulling process simple and reliable, shorten the core pulling time and product production cycle, and improve production efficiency.

[0045] Second embodiment

[0046] Please refer to Fig.10 The present invention provides an injection mold 10 for producing plastic products. The injection mold 10 includes a reverse inner core pulling mechanism 100, a movable mold plate 200, a fixed mold plate 300, a movable mold base plate 400 and a fixed mold base plate 500. The basic structure and principle of the reverse inner core pulling mechanism 100 and the technical effects produced are the same as those of the first embodiment. For the sake of brief description, for the parts not mentioned in this embodiment, reference can be made to the corresponding contents in the first embodiment.

[0047] It should be noted that the movable mold core 110 is fixedly mounted on the movable mold plate 200 and is disposed between the movable mold plate 200 and the fixed mold plate 300. The driving member 160 is mounted on the side of the movable mold plate 200. The first slider 120 is slidably disposed on the movable mold plate 200. The driving member 160 can drive the first slider 120 to slide on the movable mold plate 200. Specifically, the movable mold plate 200 can be close to or away from the fixed mold plate 300 to achieve the closing or opening action of the injection mold 10. When the injection mold 10 is opened to a certain extent, the reverse inner core pulling mechanism 100 performs the core pulling action.

[0048] In this embodiment, the fixed mold base plate 500 is connected to the fixed mold plate 300, and the movable mold base plate 400 is connected to the movable mold plate 200. The fixed mold base plate 500 and the movable mold base plate 400 are relatively installed on both sides of the injection molding machine. The injection molding machine can drive the movable mold plate 200 to approach or move away from the fixed mold plate 300 through the movable mold base plate 400 to realize the closing or opening action of the injection mold 10.

[0049] The beneficial effects of the injection mold 10 described in the embodiment of the present invention are the same as those of the first embodiment, and will not be described in detail herein.

[0050] Although the present invention is disclosed as above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the scope defined by the claims.

Claims

1. A reverse inner core pulling mechanism, characterized in that: The invention comprises a movable mold core (110), a first slider (120), a second slider (130), a shovel base (140), an inclined guide column (150), a driving member (160) and a pressure strip (170), wherein the shovel base (140) is fixedly mounted on the first slider (120) and is fixedly connected to the inclined guide column (150), the inclined guide column (150) extends into the second slider (130) and is slidably matched with the second slider (130), the driving member (160) is connected to the first slider (120), and the movable mold core (110) has a supporting surface (111), and the supporting surface (111 ) is abutted against the first slider (120), the abutting surface (111) is provided with an accommodating cavity (112), the pressure strip (170) is fixedly connected to the accommodating cavity (112), the second slider (130) is arranged in the accommodating cavity (112) and is slidably matched with the pressure strip (170), the first slider (120) can be separated from the abutting surface (111) under the drive of the driving member (160), so that the second slider (130) can slide along the pressure strip (170) in a direction away from the abutting surface (111) under the drive of the inclined guide column (150); The pressure strip (170) is adjacently provided with a supporting surface (171) and a matching surface (172); the second sliding block (130) is placed on the supporting surface (171) and slidably matches with the matching surface (172); the matching surface (172) and the abutting surface (111) are arranged at a first preset angle; The first preset angle ranges from 5 degrees to 20 degrees; The pressure strip (170) is also adjacently provided with a positioning surface (173) and a fixing surface (174); the positioning surface (173) is arranged opposite to the matching surface (172); the fixing surface (174) is arranged opposite to the supporting surface (171); the positioning surface (173) is flush with the abutting surface (111); the positioning surface (173) and the matching surface (172) are arranged at the first preset angle; and the fixing surface (174) abuts against the movable mold core (110).

2. The reverse inner core pulling mechanism according to claim 1, characterized in that: The matching surface (172) is fixedly connected to the movable mold core (110), or the fixing surface (174) is fixedly connected to the movable mold core (110).

3. The reverse inner core pulling mechanism according to claim 1, characterized in that: The second sliding block (130) is adjacently provided with a first side surface (131) and a second side surface (132); the first side surface (131) is disposed in close contact with the supporting surface (171); and the second side surface (132) is slidably matched with the matching surface (172).

4. The reverse inner core pulling mechanism according to claim 3, characterized in that: The first side surface (131) and the second side surface (132) are perpendicular to each other, and the supporting surface (171) and the matching surface (172) are perpendicular to each other.

5. The reverse inner core pulling mechanism according to claim 1, characterized in that: The reverse inner core pulling mechanism also includes an elastic member (180), the second sliding block (130) is provided with a receiving groove (133), the elastic member (180) is arranged in the receiving groove (133), one end of the elastic member (180) is abutted against the bottom wall of the receiving groove (133), and the other end is abutted against the movable mold core (110).

6. The reverse inner core pulling mechanism according to claim 1, characterized in that: The shovel base (140) is provided with a limiting groove (141), the inclined guide column (150) is fixedly connected to the bottom wall of the limiting groove (141), and the second sliding block (130) is arranged in the limiting groove (141) and is slidably matched with the inclined guide column (150).

7. An injection mold, characterized in that: It comprises the reverse inner core pulling mechanism as described in any one of claims 1 to 6.

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