Secondary core pulling mechanism and injection mold
By using a secondary core extraction mechanism with a limiting assembly and a stop surface in the injection mold, the problem that traditional core extraction methods are difficult to achieve core extraction in different directions is solved, and efficient secondary core extraction molding is achieved, and product quality and production efficiency are improved.
Patent Information
- Application Number
- CN202311475087.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-07
- Publication Date
- 2025-05-13
AI Technical Summary
In injection molds, when there are buckles on the inner and outer sides of the product at the same time, it is difficult for the traditional slider core extraction method to achieve secondary core extraction molding in different directions, resulting in strain on the inner buckle on the product, affecting product quality and production efficiency.
A secondary core extraction mechanism is adopted, including a fixed formwork, a moving formwork, a fixed seat, an oblique guide column, a slider, a molded insert, an elastic member and a limiting assembly. The limiting assembly is slidably matched with the forming insert and is provided with a stop surface. Through the cooperation of the elastic member and the limiting assembly, the core pulling action of the forming insert in different directions is realized.
The secondary core molding in different directions is achieved, which avoids straining of the inner buckle position of the product and improves product quality and production efficiency.
Smart Images
Figure CN119974424A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of molds, and in particular to a secondary core pulling mechanism and an injection mold. Background Art
[0002] At present, in the application of injection molds, when there are buckles only on the outside of the product, the traditional slider core pulling method is usually used to demold the product. When there are buckles on both the inside and outside of the product, if the traditional slider core pulling method is still used, since it can only achieve core pulling molding in one direction at a time, it will cause the buckles on the inside of the product to be strained, affecting product quality and reducing production efficiency. Summary of the invention
[0003] The problem solved by the invention is how to realize secondary core pulling molding in different directions, ensure product quality 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 secondary core pulling mechanism, including a fixed template, a movable template, a fixed seat, an inclined guide column, a slider, a molding insert, an elastic member and a limit assembly. The fixed seat is installed on the fixed template and is connected to the inclined guide column. The inclined guide column extends into the slider and is slidably matched with the slider. The slider is slidably set on the movable template. The limit assembly is installed on the slider and is slidably matched with the molding insert. The limit assembly is provided with a stop surface, and the stop surface is used to abut against the molding insert when the molding insert slides to a preset position relative to the limit assembly. One end of the elastic member abuts against the slider, and the other end abuts against the molding insert. The limit assembly is used to move along the first direction relative to the movable template as the slider is driven by the inclined guide column when the mold is opened, so that the molding insert moves along the second direction under the action of the elastic member and the limit assembly. The limit assembly is also used to drive the molding insert to move along the first direction through the stop surface after sliding to the preset position. Compared with the prior art, the secondary core pulling mechanism provided by the present invention can realize secondary core pulling molding in different directions, ensure product quality and improve production efficiency because it adopts a limit assembly that slides with the molding insert and a stop surface arranged on the limit assembly.
[0006] Furthermore, the limiting assembly includes a first limiting member and a second limiting member, both of which are mounted on the slider and are slidably matched with the molding insert, and the stop surface is arranged on the first limiting member. The first limiting member can apply a resisting force to the molding insert through the stop surface to overcome the elastic force of the elastic member and drive the molding insert to move along the first direction.
[0007] Furthermore, the first stopper and the second stopper are arranged at intervals and are arranged on both sides of the molding insert relatively, and the molding insert can be slidably arranged between the first stopper and the second stopper. The first stopper and the second stopper work together to enhance the limiting effect on the molding insert, prevent the molding insert from tilting or flipping relative to the first stopper and the second stopper, and improve the stability of the molding insert during the sliding process.
[0008] Furthermore, the molding insert is provided with a matching groove, the first position limiting member is provided with an extension block, the extension block is slidably matched with the matching groove, a stop surface is provided on the extension block, and the stop surface is used to abut against the end wall of the matching groove. The extension block of the first position limiting member can drive the entire molding insert to move along the first direction through the abutment between the stop surface and the end wall, so as to realize the core pulling action of the molding insert in the first direction.
[0009] Furthermore, the extension block is also provided with a guide surface, which is arranged adjacent to the stop surface, and is slidably matched with the side wall of the matching groove, and is arranged inclined in the first direction and the second direction at the same time, so that when the first stopper moves in the first direction, the molding insert is driven to move in the second direction, thereby realizing the core pulling action of the molding insert in the second direction.
[0010] Furthermore, the first direction and the second direction are perpendicular to each other, and a preset angle is formed between the guide surface and the first direction, and the preset angle ranges from 10 degrees to 30 degrees. A reasonable preset angle can maximize the transmission efficiency while ensuring the sliding stability, thereby improving the core pulling efficiency, and further improving the production efficiency of the product.
[0011] Furthermore, the molding insert is provided with a sliding platform, the second limiting member is provided with a guide slide groove, the sliding platform and the guide slide groove are slidably matched, the sliding platform can slide relative to the guide slide groove, and the guide slide groove can guide and limit the sliding platform.
[0012] Furthermore, the secondary core pulling mechanism also includes a guide rod, which is mounted on the slider, and the extension direction of the guide rod is the same as the direction in which the molding insert slides relative to the limit assembly, and the elastic member is sleeved outside the guide rod. The guide rod is used to limit the extension direction of the elastic member, ensuring that the elastic member can only extend or shorten along its extension direction, so that the direction in which the elastic member applies elastic force to the molding insert is the same as the direction in which the molding insert slides relative to the limit assembly, thereby preventing the elastic member from getting stuck.
[0013] Furthermore, the molding insert is provided with a limiting groove, the depth direction of which is the same as the direction in which the molding insert slides relative to the limiting assembly, and the elastic member extends into the limiting groove and abuts against the bottom wall of the limiting groove. The limiting groove is used to limit the elastic member, and the elastic member can apply elastic force to the entire molding insert by abutting against the bottom wall of the limiting groove.
[0014] In a second aspect, the present invention provides an injection mold, comprising a fixed mold base plate, a movable mold base plate and the above-mentioned secondary core pulling mechanism, the secondary core pulling mechanism comprises a fixed mold plate, a movable mold plate, a fixed seat, an inclined guide column, a slider, a molding insert, an elastic member and a limit assembly, the fixed mold base plate is connected to the fixed mold plate, the movable mold base plate is connected to the movable mold plate, the fixed seat is installed on the fixed mold plate and is connected to the inclined guide column, the inclined guide column extends into the slider and is slidably matched with the slider, the slider is slidably set on the movable mold plate, the limit assembly is installed on the slider and is connected to the molding insert, the elastic member and the limit assembly are connected to the movable mold plate, the fixed seat ... movable mold plate, the movable mold base plate is connected to the movable mold plate, the fixed seat is installed on the fixed mold plate and is connected to the molding insert, the movable mold base plate is connected to the movable mold plate, the fixed seat is installed on the fixed mold plate and is connected to the inclined guide column, the inclined guide column extends into the slider and is slidably matched with the slider, the movable mold plate is slidably set on the movable mold plate, the limit assembly is installed on the slider and is connected to the molding insert, the elastic member and the limit assembly are connected to the movable mold plate, the movable mold base plate is connected to the movable mold plate, the movable mold base plate is connected to the movable mold plate, the movable mold base plate is connected to the movable mold plate, the movable mold base plate is connected to the movable mold plate, the movable mold base plate is connected to the movable mold plate, the movable mold base plate is connected to the The inserts are slidably matched, and the limit assembly is provided with a stop surface, which is used to abut against the molding insert when the molding insert slides to a preset position relative to the limit assembly. One end of the elastic member abuts against the slider, and the other end abuts against the molding insert. The limit assembly is used to move along the first direction relative to the movable template with the slider driven by the inclined guide column when the mold is opened, so that the molding insert moves along the second direction under the action of the elastic member and the limit assembly. The limit assembly is also used to drive the molding insert to move along the first direction through the stop surface after sliding to the preset position. The injection mold can realize secondary core pulling molding in different directions, ensure product quality, and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is an exploded view of the secondary core pulling mechanism described in the first embodiment of the present invention;
[0016] Figure 2 It is a structural schematic diagram of a perspective of the sliding cooperation between the forming insert and the limiting assembly in the secondary core pulling mechanism according to the first embodiment of the present invention;
[0017] Figure 3 It is a structural schematic diagram of another perspective of the sliding cooperation between the molding insert and the limiting assembly in the secondary core pulling mechanism according to the first embodiment of the present invention;
[0018] Figure 4 It is an exploded view of the connection between the slider and the limit assembly in the secondary core pulling mechanism described in the first embodiment of the present invention;
[0019] Figure 5 It is an exploded view of the sliding cooperation between the molding insert and the limiting assembly in the secondary core pulling mechanism according to the first embodiment of the present invention;
[0020] Figure 6 It is a structural schematic diagram of a forming insert in the secondary core pulling mechanism described in the first embodiment of the present invention.
[0021] Description of reference numerals:
[0022] 100-secondary core-pulling mechanism; 110-fixed template; 120-movable template; 130-fixed seat; 140-inclined guide column; 150-slider; 160-molding insert; 161-matching groove; 162-end wall; 163-side wall; 164-sliding table; 165-limiting groove; 170-elastic member; 180-limiting assembly; 181-stop surface; 182-first limiting member; 183-second limiting member; 184-extension block; 185-guide surface; 186-guide groove; 190-guide rod; 200-product. DETAILED DESCRIPTION
[0023] 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.
[0024] First embodiment
[0025] Please refer to Figures 1 to 5 The embodiment of the present invention provides a secondary core pulling mechanism 100 for core pulling molding of a product 200. It can realize secondary core pulling molding in different directions, ensure the quality of the product 200, and improve production efficiency.
[0026] In this embodiment, the product 200 is an air conditioner base, and the secondary core pulling mechanism 100 is used in the production process of the air conditioner base. The secondary core pulling mechanism 100 is used to perform core pulling molding on the buckle position located on the inner side of the air conditioner base and the buckle position located on the outer side of the air conditioner base at one time to ensure the quality of the product 200 of the air conditioner base and improve the production efficiency of the air conditioner base. However, it is not limited to this. In other embodiments, the product 200 can also be other plastic products, and the application scenario of the secondary core pulling mechanism 100 is not specifically limited.
[0027] The secondary core pulling mechanism 100 includes a fixed mold plate 110, a movable mold plate 120, a fixed seat 130, an inclined guide column 140, a slider 150, a molding insert 160, an elastic member 170, a limit assembly 180 and a guide rod 190. The fixed seat 130 is installed on the fixed mold plate 110 and connected to the inclined guide column 140. The fixed seat 130 can fix the relative position of the inclined guide column 140 and the fixed mold plate 110 to prevent the inclined guide column 140 from being displaced relative to the fixed mold plate 110. The inclined guide column 140 extends into the slider 150 and is slidably matched with the slider 150. The slider 150 is slidably arranged on the movable mold plate 120. The slider 150 is used to mold the product 200. The inclined guide column 140 can drive the slider 150 to slide relative to the movable mold plate 120 along the first direction when the mold is opened. The limiting assembly 180 is mounted on the slider 150 and is slidably matched with the molding insert 160. The limiting assembly 180 can limit the molding insert 160. The molding insert 160 can slide relative to the limiting assembly 180. The limiting assembly 180 and the molding insert 160 are both used to mold the product 200. The limiting assembly 180 is provided with a stop surface 181. The stop surface 181 is used to abut against the molding insert 160 when the molding insert 160 slides to a preset position relative to the limiting assembly 180, so as to drive the molding insert 160 to move through the limiting assembly 180. One end of the elastic member 170 abuts against the slider 150, and the other end abuts against the molding insert 160. The elastic member 170 is always in a compressed state. The elastic member 170 is used to apply elastic force to the molding insert 160. Specifically, the limit assembly 180 is used to move along the first direction relative to the movable template 120 as the slider 150 is driven by the inclined guide column 140 when the mold is opened, so that the molding insert 160 moves along the second direction under the action of the elastic member 170 and the limit assembly 180, thereby realizing the first core pulling action of the molding insert 160 in the second direction. The limit assembly 180 is also used to drive the molding insert 160 to move along the first direction through the stop surface 181 after sliding to the preset position, so as to realize the second core pulling action of the molding insert 160 in the first direction. In this way, secondary core pulling molding in different directions can be realized, thereby ensuring the quality of the product 200 and improving production efficiency.
[0028] It should be noted that the guide rod 190 is mounted on the slider 150, and the slider 150 is used to support and fix the guide rod 190. Specifically, the extension direction of the guide rod 190 is the same as the direction in which the molding insert 160 slides relative to the limit assembly 180, and is the same as the extension direction of the elastic member 170. The elastic member 170 is sleeved outside the guide rod 190. The guide rod 190 is used to limit the extension direction of the elastic member 170 to ensure that the elastic member 170 can only extend or shorten along its extension direction, so that the direction in which the elastic member 170 applies elastic force to the molding insert 160 is the same as the direction in which the molding insert 160 slides relative to the limit assembly 180, thereby preventing the elastic member 170 from getting stuck.
[0029] It is worth noting that when the mold is opened, the movable template 120 moves in the direction away from the fixed template 110, and the distance between the movable template 120 and the fixed template 110 gradually increases. During this process, the inclined guide column 140 applies a force to the slider 150 to drive the slider 150 to slide relative to the movable template 120 along the first direction and away from the product 200. Specifically, the sliding of the slider 150 relative to the movable template 120 along the first direction is divided into a primary core pulling process and a secondary core pulling process. During the primary core pulling process, the limit assembly 180 moves along the first direction with the slider 150. During this process, due to the elastic force of the elastic member 170, the molding insert 160 cannot move with the limit assembly 180, but slides relative to the limit assembly 180. At this time, the molding insert 160 moves along the second direction to realize the core pulling action of the molding insert 160 in the second direction, that is, the inner buckle of the molding product 200; when the molding When the insert 160 slides to a preset position relative to the limiting component 180, the molding insert 160 abuts against the stop surface 181, and then enters the secondary core pulling process; in the secondary core pulling process, the limiting component 180 continues to move along the first direction with the slider 150. In this process, the abutting force applied by the stop surface 181 to the molding insert 160 overcomes the elastic force applied by the elastic member 170 to the molding insert 160, and drives the molding insert 160 to move along the first direction, so as to realize the core pulling action of the molding insert 160 in the first direction, that is, the outer buckle position of the molding product 200.
[0030] Furthermore, during a core pulling process, the limiting assembly 180 moves along the first direction driven by the slider 150. During this process, the elastic member 170 applies elastic force to the molding insert 160 to make the molding insert 160 slide relative to the limiting assembly 180. At this time, a force analysis is performed on the molding insert 160. The elastic member 170 applies elastic force F1 to the molding insert 160 along its extension direction, and the limiting assembly 180 applies a limiting force F2 in the first direction to the molding insert 160. The resultant force F3 composed of the elastic force F1 and the limiting force F2 is located in the second direction to drive the molding insert 160 to slide along the second direction.
[0031] The limiting assembly 180 includes a first limiting member 182 and a second limiting member 183, both of which are used for molding the product 200. The first limiting member 182 and the second limiting member 183 are both mounted on the slider 150, and both are slidably matched with the molding insert 160. The slider 150 is used to support and fix the first limiting member 182 and the second limiting member 183, and both of the first limiting member 182 and the second limiting member 183 are used to limit and guide the molding insert 160. Specifically, the stop surface 181 is provided on the first limiting member 182, and the first limiting member 182 can apply a resisting force to the molding insert 160 through the stop surface 181, so as to overcome the elastic force of the elastic member 170 and drive the molding insert 160 to move along the first direction.
[0032] In this embodiment, the first limit member 182 and the second limit member 183 are arranged at intervals and relatively arranged on both sides of the molding insert 160. The molding insert 160 can be slidably arranged between the first limit member 182 and the second limit member 183, that is, one side of the molding insert 160 is slidably matched with the first limit member 182, and the other side is slidably matched with the second limit member 183. The first limit member 182 and the second limit member 183 work together to enhance the limiting effect on the molding insert 160, prevent the molding insert 160 from tilting or flipping relative to the first limit member 182 and the second limit member 183, and improve the stability of the molding insert 160 during the sliding process.
[0033] Furthermore, the molding insert 160 is provided with a matching groove 161, and the first limiting member 182 is provided with an extension block 184, the extension block 184 is slidably matched with the matching groove 161, the extension block 184 can slide relative to the matching groove 161, and the matching groove 161 can guide and limit the extension block 184. Specifically, a stop surface 181 is provided on the extension block 184, and the stop surface 181 is used to abut against the end wall 162 of the matching groove 161. The extension block 184 of the first limiting member 182 can drive the entire molding insert 160 to move along the first direction through the abutment between the stop surface 181 and the end wall 162, so as to realize the core pulling action of the molding insert 160 in the first direction.
[0034] Specifically, the extension block 184 is further provided with a guide surface 185, which is disposed adjacent to the stop surface 181, and the guide surface 185 is slidably engaged with the side wall 163 of the matching groove 161, and the matching groove 161 can guide the extension block 184 through the slidable engagement between the side wall 163 and the guide surface 185. Specifically, the guide surface 185 is disposed to be inclined to both the first direction and the second direction, so that when the first stopper 182 moves along the first direction, the molding insert 160 is driven to move along the second direction, thereby realizing the core pulling action of the molding insert 160 in the second direction.
[0035] Furthermore, the first direction and the second direction are perpendicular to each other, and a preset angle is formed between the guide surface 185 and the first direction, and the preset angle ranges from 10 degrees to 30 degrees. A reasonable preset angle can maximize the transmission efficiency while ensuring the sliding stability, thereby improving the core pulling efficiency, and further improving the production efficiency of the product 200. For ease of understanding, the preset angle is represented as a. In this embodiment, the preset angle is 15 degrees, but it is not limited to this. In other embodiments, the preset angle can be 10 degrees or 30 degrees, and the size of the preset angle is not specifically limited.
[0036] It should be noted that the molding insert 160 is provided with a sliding table 164, and the second limiting member 183 is provided with a guide slot 186. The sliding table 164 and the guide slot 186 are slidably matched, and the sliding table 164 can slide relative to the guide slot 186, and the guide slot 186 can guide and limit the sliding table 164. Specifically, the extension direction of the guide slot 186 is arranged parallel to the guide surface 185, and the extension direction, the first direction and the second direction of the guide slot 186 are all located on the horizontal plane, that is, the angle between the extension direction of the guide slot 186 and the first direction is equal to the preset angle, thereby improving the limiting effect of the first limiting member 182 and the second limiting member 183 on the molding insert 160. For ease of understanding, the extension direction of the guide slot 186 is represented as the third direction, and the molding insert 160 can slide relative to the limiting component 180 along the third direction.
[0037] In this embodiment, the guide groove 186 is a T-shaped groove, and the shape of the sliding platform 164 matches the shape of the guide groove 186 to further improve the stability of the molding insert 160 during the sliding process and prevent the sliding platform 164 from escaping from the guide groove 186.
[0038] Please refer to Figure 6 In this embodiment, the molding insert 160 is provided with a limiting groove 165, and the depth direction of the limiting groove 165 is the same as the sliding direction of the molding insert 160 relative to the limiting assembly 180, that is, the depth direction of the limiting groove 165 is the third direction. The elastic member 170 extends into the limiting groove 165 and abuts against the bottom wall of the limiting groove 165. The elastic member 170 can apply elastic force to the entire molding insert 160 by abutting against the bottom wall of the limiting groove 165.
[0039] Specifically, the elastic member 170 is a spring, and a portion of the elastic member 170 is disposed in the limiting groove 165. The extension direction of the elastic member 170, the depth direction of the limiting groove 165, and the extension direction of the guide rod 190 are the same, and are all the third direction. The limiting groove 165 and the guide rod 190 work together to limit the elastic member 170, further ensuring that the elastic member 170 can only extend or shorten along its extension direction, thereby improving the working stability of the elastic member 170.
[0040] It is worth noting that in the core pulling process of the secondary core pulling mechanism 100, the movable template 120 is first controlled to move in the direction away from the fixed template 110. During this process, the inclined guide column 140 and the slider 150 are slidably matched to make the slider 150 slide along the first direction relative to the movable template 120 in the direction away from the product 200. The slider 150 simultaneously drives the first limit member 182 and the second limit member 183 to slide along the first direction in the direction away from the product 200, so as to realize the core pulling molding of the product 200 by the slider 150, the first limit member 182 and the second limit member 183; at the same time, the first limit member 182 and the second limit member 183 are driven by the slider 150. A limit member 182, a second limit member 183 and an elastic member 170 work together to move the molding insert 160 in the second direction, thereby realizing the first core pulling action of the molding insert 160 in the second direction; when the molding insert 160 slides to a preset position relative to the first limit member 182, the molding insert 160 abuts against the stop surface 181, and then the first limit member 182 overcomes the elastic force applied by the elastic member 170 to the molding insert 160, and drives the molding insert 160 to move in the first direction, thereby realizing the second core pulling action of the molding insert 160 in the first direction, thereby completing the secondary core pulling.
[0041] In the secondary core-pulling mechanism 100 described in the embodiment of the present invention, the fixed seat 130 is installed on the fixed template 110 and connected to the inclined guide column 140. The inclined guide column 140 extends into the slider 150 and slides with the slider 150. The slider 150 is slidably arranged on the movable template 120. The limit assembly 180 is installed on the slider 150 and slides with the molding insert 160. The limit assembly 180 is provided with a stop surface 181, which is used to stop the molding insert 160 when it slides relative to the limit assembly 180 to a preset position. When the mold is in the preset position, the elastic member 170 abuts against the molding insert 160, one end of the elastic member 170 abuts against the slider 150, and the other end abuts against the molding insert 160. The limiting assembly 180 is used to move along the first direction relative to the movable template 120 with the slider 150 driven by the inclined guide column 140 when the mold is opened, so that the molding insert 160 moves along the second direction under the action of the elastic member 170 and the limiting assembly 180. The limiting assembly 180 is also used to drive the molding insert 160 to move along the first direction through the stop surface 181 after sliding to the preset position. Compared with the prior art, the secondary core pulling mechanism 100 provided by the present invention can realize secondary core pulling molding in different directions due to the use of the limiting assembly 180 that slides with the molding insert 160 and the stop surface 181 set on the limiting assembly 180, thereby ensuring the quality of the product 200 and improving the production efficiency.
[0042] Second embodiment
[0043] The present invention provides an injection mold (not shown) for producing plastic products. The injection mold includes a fixed mold base plate (not shown), a movable mold base plate (not shown) and a secondary core pulling mechanism 100. The basic structure and principle of the secondary 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 parts not mentioned in this embodiment, reference may be made to the corresponding contents in the first embodiment.
[0044] In this embodiment, the fixed mold base plate is connected to the fixed mold plate 110, and the movable mold base plate is connected to the movable mold plate 120. The fixed mold base plate and the movable mold base plate are relatively installed on both sides of the injection molding machine. The injection molding machine can drive the movable mold plate 120 away from or close to the fixed mold plate 110 through the movable mold base plate to realize the opening or closing action of the secondary core pulling mechanism 100.
[0045] The beneficial effects of the injection mold 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.
[0046] 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 secondary core pulling mechanism, characterized in that: The invention comprises a fixed template (110), a movable template (120), a fixed seat (130), an inclined guide column (140), a slider (150), a molding insert (160), an elastic member (170) and a limiting assembly (180), wherein the fixed seat (130) is mounted on the fixed template (110) and connected to the inclined guide column (140), the inclined guide column (140) extends into the slider (150) and is slidably matched with the slider (150), the slider (150) is slidably arranged on the movable template (120), the limiting assembly (180) is mounted on the slider (150) and is slidably matched with the molding insert (160), and the limiting assembly (180) is provided with a stop surface (181), and the stop surface (181) is used to stop the stop surface (181) at the fixed template (110). When the molding insert (160) slides to a preset position relative to the limiting assembly (180), it abuts against the molding insert (160); one end of the elastic member (170) abuts against the slider (150), and the other end abuts against the molding insert (160); the limiting assembly (180) is used to move along a first direction relative to the movable template (120) as the slider (150) is driven by the inclined guide column (140) when the mold is opened, so that the molding insert (160) moves along a second direction under the action of the elastic member (170) and the limiting assembly (180); the limiting assembly (180) is also used to drive the molding insert (160) to move along the first direction through the stop surface (181) after sliding to the preset position.
2. The secondary core pulling mechanism according to claim 1, characterized in that: The limiting assembly (180) comprises a first limiting member (182) and a second limiting member (183); the first limiting member (182) and the second limiting member (183) are both mounted on the slider (150) and are slidably matched with the molding insert (160); and the stop surface (181) is disposed on the first limiting member (182).
3. The secondary core pulling mechanism according to claim 2, characterized in that: The first limiting member (182) and the second limiting member (183) are arranged at intervals and are arranged on two sides of the molding insert (160) opposite to each other. The molding insert (160) can be slidably arranged between the first limiting member (182) and the second limiting member (183).
4. The secondary core pulling mechanism according to claim 2, characterized in that: The molding insert (160) is provided with a matching groove (161), the first limiting member (182) is provided with an extension block (184), the extension block (184) is slidably matched with the matching groove (161), the stop surface (181) is provided on the extension block (184), and the stop surface (181) is used to abut against the end wall (162) of the matching groove (161).
5. The secondary core pulling mechanism according to claim 4, characterized in that: The extension block (184) is further provided with a guide surface (185), the guide surface (185) being arranged adjacent to the stop surface (181), the guide surface (185) being slidably matched with the side wall (163) of the matching groove (161), and the guide surface (185) being arranged inclined in both the first direction and the second direction.
6. The secondary core pulling mechanism according to claim 5, characterized in that: The first direction and the second direction are perpendicular to each other, and a preset angle is formed between the guide surface (185) and the first direction, and the preset angle ranges from 10 degrees to 30 degrees.
7. The secondary core pulling mechanism according to claim 2, characterized in that: The molding insert (160) is provided with a sliding platform (164), the second limiting member (183) is provided with a guide groove (186), and the sliding platform (164) is slidably matched with the guide groove (186).
8. The secondary core pulling mechanism according to claim 1, characterized in that: The secondary core-pulling mechanism further comprises a guide rod (190), wherein the guide rod (190) is mounted on the slider (150), and an extension direction of the guide rod (190) is the same as a sliding direction of the molding insert (160) relative to the limiting assembly (180), and the elastic member (170) is sleeved outside the guide rod (190).
9. The secondary core pulling mechanism according to claim 1, characterized in that: The molding insert (160) is provided with a limiting groove (165), the depth direction of the limiting groove (165) is the same as the sliding direction of the molding insert (160) relative to the limiting assembly (180), and the elastic member (170) extends into the limiting groove (165) and abuts against the bottom wall of the limiting groove (165).
10. An injection mold, characterized in that: It comprises a fixed die base plate, a movable die base plate and a secondary core pulling mechanism as claimed in any one of claims 1 to 9, wherein the fixed die base plate is connected to the fixed die plate (110), and the movable die base plate is connected to the movable die plate (120).