Secondary separation mechanism for mold

Abstract

The utility model discloses a secondary separation mechanism for a mold in the technical field of inserts in injection molds, and aims to solve the problem of mold separation in a product debugging stage. The core insert comprises an insert base and a core insert arranged on a core plate; a forming insert core is arranged on the insert core seat; the first limiting piece is elastically connected to the sliding block seat; the two guide rails are arranged on the male mold plate on one side of the male mold core in parallel; the sliding block seat is driven to move back and forth on the two guide rails, the first limiting piece moves along the guide rails and drives the insert core seat arranged between the two guide rails to approach or get away from the male mold core, and the limiting part of the first limiting piece is clamped with the second limiting piece on the insert core seat; the sliding block seat drives the first limiting piece to be far away from the male mold core along the first stroke surface / the second stroke surface of the guide rail, so that the insert seat drives the forming insert to exit from the cavity / the limiting part to move upwards and break away from the limitation of the second limiting piece, and primary demolding / separation of the insert seat is realized to complete secondary demolding; the method is suitable for small-batch mold separation production, mold cost is controlled, and project verification efficiency is improved.

Description

Technical Field

[0001] The utility model relates to a secondary separation mechanism for a mold, belonging to the technical field of embedded parts in injection molds. Background Art

[0002] Injection molded products with lead frames are often seen in daily life, especially in the automotive industry. The lead frame is placed in the injection mold cavity, and then the material is injected into the mold cavity for overmolding. The function of the lead frame is to conduct electricity.

[0003] The actual mass production of such products requires a set of automatic lead frame loading devices to cooperate with mold injection production. Automatic lead frame loading has many advantages, such as shortening the cycle and reducing the workload of workers. However, there are many verification projects in actual work (referring to the product development stage), which need to be used for small-batch production to verify product performance. The required product quantity is small, and design changes often occur. If automatic devices are used for mass production, test verification will cause excessive waste, and the cost of investing in automation is high; when the product design changes, the automation must also be adjusted, and its maintenance cost is high.

[0004] Secondly, automation is produced in conjunction with molds. Its design is based on specific molds. The design of automation can usually be started only after the mold is completed. This also leads to a long period of time from the design of automation to the completion of processing and assembly, and then to debugging and production. In actual work, the time for verifying projects is relatively tight. It is difficult to meet customer requirements through automation, and the investment in automation is large and not suitable. Therefore, there is an urgent need for a mold separation mechanism that can meet the debugging stage, so as to facilitate the manual insertion of the sub-seat and lead frame or the separation of the sub-seat, so that operators can quickly complete the project verification. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a secondary separation mechanism for a mold, which is used to enable an operator or a robot arm to manually insert an inserter seat, and to perform a secondary separation design through the mechanism to separately split the inserter seat, so as to facilitate the operator to perform repeated tests efficiently and quickly during the debugging stage.

[0006] In order to achieve the above purpose, the utility model is implemented by adopting the following technical solutions:

[0007] The utility model provides a secondary mold separation mechanism, comprising an insert seat, a slider seat, a guide rail and a male mold plate; the insert seat is provided with a forming insert; a first limiting member is elastically connected to the slider seat; a male mold core is provided on the male mold plate; two guide rails are arranged in parallel on the male mold plate on one side of the male mold core; the slider seat is driven to reciprocate on the two guide rails, the first limiting member moves along the guide rails and drives the insert seat placed between the two guide rails to approach or move away from the male mold core, so that the forming insert enters or exits from the cavity of the male mold core;

[0008] Among them, the limiting part of the first limiting member is clamped with the second limiting member on the insert seat; the sliding block seat drives the first limiting member to move away from the male mold core along the first travel surface of the guide rail, so that the insert seat drives the molding insert to exit the cavity to achieve one-time demolding; the sliding block seat continues to move, driving the first limiting member to rise and run along the second travel surface of the guide rail, so that the limiting part moves up and breaks away from the restriction of the second limiting member, separating the insert seat to complete the secondary demolding.

[0009] Furthermore, the first limiting member includes a limiting block, a shoulder screw and a first spring; the lower part of the screw of the shoulder screw passes through the limiting block and is screwed onto the slider seat; the first spring is sleeved on the outer periphery of the upper part of the screw of the shoulder screw, and the two ends of the first spring respectively abut against the head of the shoulder screw and the limiting block; the end of the limiting block is a lower hook block.

[0010] Furthermore, the second limiting member is an upper hook block; the upper hook block is arranged at the rear end of the insert seat, and is used for vertical clamping with the lower hook block.

[0011] Furthermore, it also includes a second spring and a limit block; the entry seat is fixedly connected to the limit block to form a first limit groove; the tail end of the upper hook block is placed in the first limit groove and elastically connected to the entry seat, so that the upper hook block swings up and down around the elastic connection point under the limiting action of the first limit groove; when the slider seat drives the lower hook block of the limit block to squeeze the upper hook block, the upper hook block can be swung downward to form an upper and lower clamping connection with the lower hook block.

[0012] Furthermore, the contact surfaces where the upper hook block and the lower hook block are pressed against each other are both oblique guide surfaces; the engaging surfaces of the upper hook block and the lower hook block and their respective oblique guide surfaces are connected through an arc surface transition.

[0013] Furthermore, a second limiting groove is formed between the tail end of the upper hook block and the inserting seat; two ends of the second spring respectively abut against the upper bottom surface and the lower bottom surface of the second limiting groove.

[0014] Furthermore, the guide rail includes an upper travel block arranged on the lower travel block; the lower travel blocks are respectively arranged on both sides of the sliding seat, and play a limiting and guiding role for the entry seat; the second travel surface of the upper travel block is a first rising guide surface and a straight line surface connected front and back; the limit block runs along the first travel surface of the lower travel block, and rises to the straight line surface along the first rising guide surface.

[0015] Furthermore, a second rising guide surface is correspondingly arranged on the limit block close to the side of the upper travel block.

[0016] Furthermore, the height of the upper travel block is greater than or equal to the depth of the mutual engagement of the upper hook block and the lower hook block.

[0017] Furthermore, a first positioning block is extended outward from the front end of the insert seat; the molding insert is arranged on the first positioning block; and a positioning groove is correspondingly provided on the male mold core and is connected with the mold cavity.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides a secondary separation mechanism for a mold, wherein a male mold core is arranged on a male mold plate, two parallel guide rails are arranged on the male mold plate on one side of the male mold core, a first limiting member is elastically connected to a slider seat, and the slider seat drives the first limiting member to reciprocate along the first guide rail, driving the clamped insert seat to relatively approach or move away from the male mold core, so that the molding insert enters or exits from the mold cavity of the male mold core; wherein the limiting part of the first limiting member and the second limiting member on the insert seat form a clamping design, which cooperates with the guide rail design, the purpose is to assist the first limiting member to rise or fall during operation, and correspondingly make the first limiting member and the second limiting member of the insert seat to be separated or clamped and locked. That is, it is used to help the insert seat and the molding insert to separate from the mold cavity of the male mold core or to separate the insert seat separately. This design can facilitate operators to easily take the insert seat automatically separated by the mechanism, and also facilitate operators to insert the placed insert seat into the mold cavity through the mechanism design, thereby improving the test efficiency. In addition, the dual-rail design can also limit and guide the pre-placed insert seat, making it easier for the operator or robot to fit the insert seat into the cavity of the male mold core, thereby improving the accuracy of inserting the molded insert and its inserted lead frame into the cavity for fitting casting, thereby improving the efficiency of overall testing, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of an embodiment of a mold secondary separation mechanism provided by the utility model;

[0021] Figure 2 yes Figure 1 A top view of

[0022] Figure 3 yes Figure 1 A schematic diagram of the clamping structure of the first limiting member and the second limiting member;

[0023] Figure 4 yes Figure 3 Schematic diagram of some structures;

[0024] Figure 5 yes Figure 1 A schematic diagram of the structure in which the first limiting member and the second limiting member are released from the engagement;

[0025] Figure 6 yes Figure 1 A schematic diagram of a structure in which the first limiting member and the second limiting member are separated from each other;

[0026] Figure 7 It is a structural schematic diagram of another embodiment of a mold secondary separation mechanism provided by the utility model;

[0027] Figure 8 yes Figure 7 A schematic diagram of the clamping structure of the first limiting member and the second limiting member;

[0028] Fig. 9 yes Figure 8 Schematic diagram of some structures;

[0029] Fig.10 yes Figure 7 A schematic diagram of the structure in which the first limiting member and the second limiting member are released from the engagement;

[0030] Fig.11 yes Figure 7 A schematic diagram of a structure in which the first limiting member and the second limiting member are separated from each other;

[0031] Fig.12 is a half-section schematic diagram of the assembly structure of the insert seat and the second limiting member;

[0032] Fig.13 It is a structural schematic diagram of the guide rail provided in the utility model;

[0033] In the figure: 1, insert seat; 2, slider seat; 3, guide rail; 4, male mold plate; 5, male mold core; 6, forming insert; 7, first stroke surface; 8, second stroke surface; 9, limit block; 10, shoulder screw; 11, first spring; 12, lower hook block; 13, upper hook block; 14, second spring; 15, limit stop block; 16, first limit groove; 17, inclined guide surface; 18, clamping surface; 19, arc surface; 20, second limit groove; 21, upper stroke block; 22, lower stroke block; 23, first rising guide surface; 24, straight line surface; 25, second rising guide surface; 26, first positioning block; 27, positioning groove; 28, driving mechanism; 29, second positioning block. DETAILED DESCRIPTION

[0034] The utility model is further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and cannot be used to limit the protection scope of the utility model.

[0035] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more. Example

[0036] like Figures 1 to 13 , this embodiment provides a secondary mold separation mechanism, including an insert seat 1, a slider seat 2, a guide rail 3 and a male mold plate 4; the male mold plate 4 is provided with a male mold core 5, and a cavity is provided in the male mold core 5. A molding insert 6 is provided on the insert seat 1, and the lead frame (terminal) is plugged into the molding insert 6 before the test. In order to make the molding insert 6 and the lead frame accurately match the cavity in the male mold core 5, a first positioning block 26 extends from the front end of the insert seat 1, and the molding insert 6 is arranged on the first positioning block 26. Correspondingly, a positioning groove 27 that cooperates with the first positioning block 26 is provided on the male mold core 5, and the positioning groove 27 is connected to the cavity. When the insert seat 1 approaches the male mold core 5, the first positioning block 26 guides the molding insert 6 and the lead frame through the guiding effect of the positioning groove 27, so that the molding insert 6 and the lead frame accurately enter the cavity.

[0037] The slider seat 2 is elastically connected with a first limiter, and two guide rails 3 are fixed parallel to each other on the male mold plate 4 on one side of the male mold core 5. The slider seat 2 is arranged between the two guide rails 3, and the driving mechanism 28 installed on the mold drives the slider seat 2 to reciprocate between the two guide rails 3. Among them, the driving mechanism 28 can be an oil cylinder. When the slider seat 2 reciprocates, the elastically connected first limiter reciprocates along the guide rail 3, and at the same time drives the insert seat 1 restricted between the two guide rails 3 to approach or move away from the male mold core 5, so that the molding insert 6 enters or exits from the cavity of the male mold core 5.

[0038] Among them, combined Figure 1 , Figure 3 , Figure 5 and Figure 6 , the limiting part of the first limiting member and the second limiting member provided on the insert seat 1 form an upper and lower clamping connection. When the slider seat 2 is driven away from the male mold core 5, the first limiting member elastically connected on the slider seat 2 moves away from the male mold core 5 along the first travel surface 7 of the guide rail 3, so that the insert seat 1 clamped with the first limiting member drives the molding insert 6 to exit the cavity, and one-time demolding is achieved. The slider seat 2 is driven to continue to move away from the male mold core 5, and the first limiting member elastically connected rises along the second travel surface 8 of the guide rail 3. At the same time, the limiting part of the first limiting member moves up and is free from the restriction of the second limiting member, so that the insert seat 1 and the first limiting member are not clamped. The slider seat 2 is driven to continue to move away from the male mold core 5, and the first limiting member moves away from the insert seat 1 to complete the secondary demolding. The travel setting of driving the first limiting member away from the insert seat 1 after separation can effectively prevent the first limiting member and the slider seat 2 from approaching the insert seat 1 or the area where the insert seat 1 is placed, interfering with the operator or the manipulator to take and put the insert seat 1, and testing the overall efficiency. Among them, there is a height difference between the first stroke surface 7 and the second stroke surface 8, so that after the sub-seat 1 enters the second stroke surface 8 along the first stroke surface 7, it is lifted by the height of the second stroke surface 8, and finally the limiting part of the first limiting member and the second limiting member are separated and not stuck.

[0039] like Figure 5 The design of the clamping connection between the limiting part of the first limiting part and the second limiting part on the insert seat 1 cooperates with the design of the guide rail 3, the purpose is to assist the first limiting part to rise or fall during operation, so that the first limiting part and the second limiting part are separated or clamped and locked, and the operation is completed within the first stroke surface 7, so that the insert seat 1 and the molding insert 6 can be smoothly separated from the cavity of the male mold core 5, and a demolding is completed. Then the second stroke surface 8 is operated, and the insert seat 1 is separated from the first limiting part comfortably and separately. This design can facilitate the operator to easily take the insert seat 1 automatically separated by the mechanism, and also facilitate the operator to insert the placed insert seat 1 into the cavity through the mechanism design, thereby improving the test efficiency.

[0040] The guide rails 3 are also designed to limit the insert seat 1 to be placed between the two guide rails 3. The guide rails 3 have a good guiding effect on the insert seat 1, helping the insert seat 1 to drive the molding insert 6 to accurately insert or exit the cavity, which can not only ensure the accuracy of casting after the molding insert 6 drives the lead frame to be inserted into the cavity, but also ensure that the molding insert 6 can be stably and safely exited after the product is cast, avoiding the problem of exit stability of the molded product affecting the accuracy of the test. Example

[0041] In combination with the first embodiment, this embodiment provides a first stopper and a second stopper. Figures 1 to 6, the first limiting member includes a limiting block 9, a shoulder screw 10 and a first spring 11. The lower part of the screw of the shoulder screw 10 is screwed onto the slider seat 2 through the limiting block 9, and the outer periphery of the upper part of the screw is sleeved with a first spring 11. The lower end of the first spring 11 abuts against the upper end surface of the limiting block 9, and the upper end of the first spring 11 abuts against the head of the shoulder screw 10 and is restricted by the head. The end of the limiting block 9 is set as a lower hook block 12. The corresponding second limiting member is an upper hook block 13. The upper hook block 13 is installed at the tail end of the insertion seat 1, and is used to be clamped up and down with the lower hook block 12. According to actual needs, multiple shoulder screws 10 and the first spring 11 are arranged in the above manner to cooperate to improve the stability of the lifting and lowering of the limiting block 9.

[0042] When using, Figure 6 , it is necessary to drive the slider seat 2 to drive the limit block 9 to be on the second stroke surface 8, and at the same time, place the insert seat 1 between the two guide rails 3, and make the upper hook block 13 face the lower hook block 12 above. When the slider seat 2 is driven to approach the male mold core 5, the first limit piece moves down along the second stroke surface 8 to the first stroke surface 7, and the compressed first spring 11 gradually recovers and stretches, so that the limit block 9 moves down along the screw with the shoulder screw 10, and when it reaches the first stroke surface 7, the limit block 9 moves down to the lower hook block 12 and is clamped in the upper hook block 13. Then continue to drive the slider seat 2 to approach the male mold core 5, and the limit block 9 pushes the insert seat 1, so that the molded insert 6 and the lead frame are inserted into the cavity, and the mold is injection molded. After the injection molding is completed, the slider seat 2 is driven away from the male mold core 5, so that when the limit block 9 completes the running distance of the first stroke surface 7, the insert seat 1 engaged with the limit block 9 exits the cavity, and the slider seat 2 is continued to be driven away from the male mold core 5, so that the limit block 9 rises along the second stroke surface 8 and then runs horizontally. While rising, the first spring 11 contracts due to the upward extrusion force. The upper hook block 13 and the lower hook block 12 are separated, and the insert seat 1 is no longer dragged. The horizontal operation after rising makes the insert block and the limit block 9 move away. Repeat the above operation method to obtain the injection molded product in the product development stage.

[0043] The first and second stoppers of this embodiment can facilitate the operator or robot to place or take the sub-holder 1, thereby improving the overall work efficiency of the injection molding product. The technical effect is consistent with the technical effect described in the first embodiment, and no further elaboration is made. However, the design of the second stopper as the upper hook block 13 in this embodiment has some disadvantages, such as Figure 5 This design needs to ensure that during the insertion process of the inserter seat 1, the position of the limit block 9 must be on the second stroke surface 8, and the lower hook block 12 is placed correspondingly below the upper hook block 13. Therefore, there are restrictive requirements for the operator or robot to place the inserter seat 1, which affects the overall injection molding efficiency. Example

[0044] In combination with the first embodiment and the second embodiment, compared with the second embodiment, the second limit member in this embodiment further includes a second spring 14 and a limit stopper 15. Figures 7 to 12 , the entry seat 1 and the limit stopper 15 are fixedly connected, and a first limit groove 16 is formed between the two. The tail end of the upper hook block 13 is installed in the first limit groove 16, and the tail end of the upper hook block 13 is elastically connected to the entry seat 1. The purpose is to allow the upper hook block 13 to swing up and down around the elastic connection point under the limiting action of the first limit groove 16. The slider seat 2 drives the first limiter to operate, and when the lower hook block 12 squeezes the upper hook block 13, the upper hook block 13 swings downward under the pressure, so that the lower hook block 12 and the upper hook block 13 are connected up and down.

[0045] Specific, combined Figure 8 , Fig. 9 , Fig.10 and Fig.11 The contact surface where the upper hook block 13 and the lower hook block 12 are pressed against each other is set as an oblique guide surface 17, and the respective engaging surfaces 18 of the upper hook block 13 and the lower hook block 12 are transitionally connected with the respective oblique guide surfaces 17 through the arc surface 19. When the lower hook block 12 squeezes the upper hook block 13, the oblique guide surface 17 of the lower hook block 12 generates a forward or downward force, and acts on the oblique guide surface 17 of the upper hook block 13, so that the upper hook block 13 is pressed downward around the elastic connection (at the same time, the upward reaction force on the lower hook block 12 compresses the first spring 11 and the lower hook block 12 moves upward), and the lower hook block 12 smoothly passes through the arc surface 19 and enters the upper hook block 13 to engage with each other.

[0046] Optional, such as Fig. 9 In some embodiments, the elastic connection method between the upper hook block 13 and the inserting seat 1 is as follows: a second limiting groove 20 is provided between the tail end of the upper hook block 13 and the inserting seat 1. The second spring 14 is installed in the second limiting groove 20, and the two ends of the second spring 14 respectively abut against the upper bottom surface and the lower bottom surface of the second limiting groove 20. That is, the upper end of the second spring 14 abuts against the upper bottom surface of the second limiting groove 20, and the lower end of the second spring 14 abuts against the lower bottom surface of the second limiting groove 20. This arrangement enables the second spring 14 to receive force only in the vertical direction, avoiding the side bending of the second spring 14, so that the upper hook block 13 can accurately limit the lower hook block 12.

[0047] This embodiment solves the requirement of position limitation for placing the entrant seat 1 in the second embodiment. After the pre-placed entrant seat 1 can be placed in any position between the two guide rails 3, after the slider seat 2 drives the limit block 9 to approach the entrant seat 1, the lower hook block 12 on the limit block 9 can be engaged with the upper hook block 13 on the entrant seat 1, eliminating the restriction requirement, making it convenient for the operator to quickly place the entrant seat 1 and improving the overall efficiency of the injection molding process.

[0048] like Fig.12Two second positioning blocks 29 extend from the rear end of the entry seat 1 and are limited on both sides of the limit block 15. This setting can not only limit the left and right sides of the upper hook block 13 set in the limit block 15, but also accurately guide the limit block 9 and limit the limit block 9 left and right after the clamping, ensuring that the entry seat 1 can only be pushed forward or pulled backward. Example

[0049] This embodiment provides a structural design of the guide rail 3 for the first to third embodiments, wherein the guide rail 3 includes a lower travel block 22 and an upper travel block 21. Fig.13 , the upper stroke block 21 is arranged on the lower stroke block 22. During installation, the two lower stroke blocks 22 are respectively assembled on both sides of the sliding seat, and the spacing setting of the two lower stroke blocks 22 meets the width limit of the insert seat 1, and the length setting of the lower stroke block 22 meets the stroke requirement of the insert seat 1, that is, the forming insert 6 docking to the cavity. The setting of its width and length can play a limiting and guiding role for the insert seat 1, so that the auxiliary operator can directly load the insert seat 1 according to the guiding role of the guide rail 3, thereby improving the work efficiency of the upper installation. Among them, the second stroke surface 8 of the upper stroke block 21 is the first rising guide surface 23 and the straight line surface 24 connected front and back. The limit block 9 runs along the first stroke surface 7 of the lower stroke block 22, and rises to the straight line surface 24 through the first rising guide surface 23 (that is, the upper stroke block 21 is shorter than the lower stroke block 22, leaving the first stroke surface 7 for the limit block 9 to run for the lower stroke block 22). Correspondingly, a second rising guide surface 25 is correspondingly arranged on the limit block 9 close to the side of the upper stroke block 21. When the limit block 9 moves along the first travel surface 7 of the lower travel block 22 to the first rising guide surface 23, the second rising guide surface 25 of the limit block 9 first rises along the first rising guide surface 23, so that the limit block 9 smoothly reaches the straight surface 24. The purpose of this structural design is to enable the limit block 9 to be raised smoothly to ensure that the insert seat 1 and the limit block 9 are separated safely and quickly. The height setting of the upper travel block 21 should be greater than or equal to the depth of the mutual engagement of the upper hook block 13 and the lower hook block 12, so that the upper hook block 13 and the lower hook block 12 can be safely and smoothly engaged and separated, and the safety of the molding insert 6 and the lead frame plug-in, i.e., the injection molding process, can be ensured.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A secondary mold separation mechanism, characterized in that: It comprises an insert seat, a slider seat, a guide rail and a male mold plate; the insert seat is provided with a forming insert; a first limiting member is elastically connected to the slider seat; a male mold core is provided on the male mold plate; two guide rails are arranged in parallel on the male mold plate on one side of the male mold core; the slider seat is driven to reciprocate on the two guide rails, the first limiting member moves along the guide rails and drives the insert seat placed between the two guide rails to approach or move away from the male mold core, so that the forming insert enters or exits from the cavity of the male mold core; Among them, the limiting part of the first limiting member is clamped with the second limiting member on the insert seat; the sliding block seat drives the first limiting member to move away from the male mold core along the first travel surface of the guide rail, so that the insert seat drives the molding insert to exit the cavity to achieve one-time demolding; the sliding block seat continues to move, driving the first limiting member to rise and run along the second travel surface of the guide rail, so that the limiting part moves up and breaks away from the restriction of the second limiting member, separating the insert seat to complete the secondary demolding.

2. The mold secondary separation mechanism according to claim 1, characterized in that: The first limiting member includes a limiting block, a shoulder screw and a first spring; the lower part of the screw of the shoulder screw passes through the limiting block and is screwed onto the slider seat; the first spring is sleeved on the outer periphery of the upper part of the screw of the shoulder screw, and the two ends of the first spring are respectively against the head of the shoulder screw and the limiting block; the end of the limiting block is a lower hook block.

3. The mold secondary separation mechanism according to claim 2, characterized in that: The second limiting member is an upper hook block; the upper hook block is arranged at the rear end of the inserting seat and is used for vertically clamping with the lower hook block.

4. The mold secondary separation mechanism according to claim 3, characterized in that: It also includes a second spring and a limit block; the entry seat is fixedly connected to the limit block to form a first limit groove; the tail end of the upper hook block is placed in the first limit groove and elastically connected to the entry seat, so that the upper hook block swings up and down around the elastic connection point under the limiting action of the first limit groove; when the slider seat drives the lower hook block of the limit block to squeeze the upper hook block, the upper hook block can swing downward to form an upper and lower clamping connection with the lower hook block.

5. The mold secondary separation mechanism according to claim 4, characterized in that: The contact surfaces of the upper hook block and the lower hook block that are pressed against each other are both oblique guide surfaces; the clamping surfaces of the upper hook block and the lower hook block and their respective oblique guide surfaces are connected through an arc surface transition.

6. The mold secondary separation mechanism according to claim 4, characterized in that: A second limiting groove is formed between the tail end of the upper hook block and the inserting seat; two ends of the second spring respectively abut against the upper bottom surface and the lower bottom surface of the second limiting groove.

7. The mold secondary separation mechanism according to claim 3, characterized in that: The guide rail includes an upper travel block arranged on the lower travel block; the lower travel blocks are respectively arranged on both sides of the sliding seat, and play a limiting and guiding role for the entry seat; the second travel surface of the upper travel block is a first rising guide surface and a straight line surface connected front and back; the limit block runs along the first travel surface of the lower travel block, and rises along the first rising guide surface to the straight line surface.

8. The mold secondary separation mechanism according to claim 7, characterized in that: A second rising guide surface is correspondingly arranged on the limit block close to the side of the upper travel block.

9. The mold secondary separation mechanism according to claim 7, characterized in that: The height of the upper travel block is greater than or equal to the depth of the upper hook block and the lower hook block being engaged with each other.

10. The mold secondary separation mechanism according to claim 1, characterized in that: A first positioning block is extended outward from the front end of the insert seat; the molding insert is arranged on the first positioning block; and a positioning groove is correspondingly arranged on the male mold core and is communicated with the mold cavity.

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