An injection mold with ejection and strong release structure and its control method

Abstract

The present invention relates to the technical field of injection molds, specifically to an injection mold with an ejection and a forced release structure and a control method thereof, including a B plate and a product that can be adjusted for up and down displacement and angle, the B plate is provided with a plurality of rear mold cores embedded and connected to the B plate, the upper part of the B plate is provided with an A plate corresponding to the B plate, the lower end of the A plate is provided with a plurality of front mold cores embedded and connected to the A plate, a forced release structure that can be adjusted for small sliding range is provided between the B plate and the A plate, and the forced release structure is used to seal the mold cavity area formed between the front mold core and the rear mold core and can remove the product in the mold cavity area, the A plate is provided with a hot runner component for injecting the mold cavity closed area formed by the front mold core, the rear mold core and the forced release structure and can be formed into a product, and the B plate is provided with an ejection structure for ejecting the product.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molds, in particular to an injection mold with an ejector and a strong release structure and a control method thereof. Background Art

[0002] The traditional injection mold structure currently on the market features a front mold for the exterior surface and a rear mold for the exterior surface. This design eliminates external constraints on the ejector pin position, making this solution impractical for this mold. If a flip-chip mold (rear mold for glue injection and rear mold for ejection) is used, the product will stick to the front mold, causing surface damage and preventing mass production. Alternatively, product designers would need to modify the structure, wasting development time and potentially affecting product performance, failing to meet the needs of OEMs.

[0003] If the conventional ejector structure is used and the ejector block driving slider structure is eliminated, the product will have a problem of ejection height and the product will not meet the requirements. To solve this problem, a new mold structure will be adopted to meet the requirements. Summary of the Invention

[0004] (1) Technical problems solved

[0005] To address the shortcomings of the existing technology, the present invention provides an injection mold with an ejector and a forced release structure, and a control method thereof. By adopting an ejection structure with both a conventional ejector block structure and a special ejector block (a slider is fixed to the ejector block), the mold has the characteristics of reducing the workload of R&D personnel, shortening R&D time, and ensuring product functionality. At the same time, the product's undercut is removed by the forced release structure, thereby meeting the process requirements of using a robotic arm to remove the part.

[0006] (2) Technical solution

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an injection mold with ejection and a forced release structure, comprising a B plate and a product that can be adjusted for up and down displacement and angle adjustment, the B plate is provided with a plurality of rear mold cores embedded and connected with the B plate, the upper part of the B plate is provided with an A plate corresponding to the B plate, the lower end of the A plate is provided with a plurality of front mold cores embedded and connected with the A plate, a forced release structure that can be adjusted for small sliding range is provided between the B plate and the A plate, and the forced release structure is used to seal the mold cavity area formed between the front mold core and the rear mold core and can remove the product in the mold cavity area, the A plate is provided with a hot runner assembly for injection molding the mold cavity closed area formed by the front mold core, the rear mold core and the forced release structure and can be formed into a product, and the B plate is provided with an ejection structure for ejecting the product. This injection mold is a two-shot, two-shot mold. The first molding cycle is for hard plastic material, and the second molding cycle is for soft plastic material. The structure and shape of the rear mold cores of the first and second molding cycles are identical, while the structure and shape of the front mold cores of the first and second molding cycles are different. The angle adjustment of the B plate can be connected to an external device, which is not shown in this figure.

[0008] Optionally, the forced release structure includes a plurality of sliders that slide slightly between plate A and plate B and a plurality of spring blocks, the output end of the slider extends between plate B and plate A and collides with the product, the spring block is located in one of the front molds and the output end of the spring block collides with the product; the ejection structure includes a top block A and a top block B, the top block A is in contact with the slider and can push the slider to slide up and down, and the top block B is located in the groove of the rear mold and slides up and down along the groove of the rear mold.

[0009] Optionally, the initial position of the slider is transmitted through a connecting rod, and a shovel base is provided under the A plate for pushing the slider to perform a secondary slide after the initial movement, and the shovel base is fixed by screws. A spring guide block is provided on the outer periphery of one of the front mold cores, which is connected to the front mold core and positions the sliding of the spring block; a positioning glass bead is provided above the top block A, which is connected to the top block A and positions and locks the movement of the slider, and the up and down sliding of the top block A is pushed by multiple top rods A, and the top rod A is empty in the B plate, and the up and down sliding of the top block B is pushed by multiple top rods B, and the top rod B is empty in the B plate.

[0010] Optionally, the transmission of the connecting rod is driven by an oil cylinder, and a pad for limiting the transmission of the connecting rod is provided on the B plate, and a hook spring connected to the spring block and elastically returning is provided below the front mold core; a return spring connected to the positioning glass bead and elastically returning is provided in the top block A, and a wear-resistant plate for supporting the sliding of the slider is provided between the bottom of the slider and the top of the top block A, and a pin plate connected to the top rod A and the top rod B and pushing the top rod A and the top rod B to slide up and down is provided below the B plate.

[0011] Optionally, the ejector plate moves up and down along the B plate by screws, and the ejector plate is provided with a limiter connected to the ejector plate and preventing the ejector plate from interfering with the B plate, a bottom plate is provided below the B plate, and a ejector rod is provided below the bottom plate for pushing the ejector plate to adjust the up and down displacement, the ejector plate includes an ejector panel and an ejector bottom plate, the ejector panel is located above the ejector bottom plate and the ejector panel and the ejector bottom plate are fixed by screws, and the ejector bottom plate is fixed to the bottom of the B plate by screws.

[0012] Optionally, the number of rear mold cores in the B plate is two and the two rear mold cores are symmetrically distributed, and the number of front mold cores in the A plate is two and the structures and shapes of the two front mold cores are different.

[0013] Optionally, the groove wall of one of the front mold cores is smooth, the groove wall of the other front mold core is provided with a protrusion corresponding to the product, and the outer periphery of the other front mold core is provided with a plurality of spring blocks that slide along the outer wall of the front mold core, and a closed mold cavity area is formed between the spring blocks and the slider, the front mold core, the rear mold core and the product.

[0014] Optionally, a hot runner plate connected to plate A is provided on plate A and is used to position and install the hot runner assembly. The output end of the hot runner assembly extends downward into the enclosed space formed by the front mold core, the rear mold core, and the forced release structure. A panel for limiting and fixing the hot runner assembly is provided above the hot runner plate. The hot runner uses heating to ensure that the plastic in the runner and gate remains in a molten state. The hot runner system generally consists of several parts, such as a hot nozzle, a manifold, a temperature control box, and accessories. Hot nozzles generally include two types: open hot nozzles and needle valve hot nozzles. Since the type of hot nozzle directly determines the selection of the hot runner system and the manufacture of the mold, the hot runner system is often divided into open hot runner systems and needle valve hot runner systems accordingly.

[0015] An injection mold with an ejector and a forced release structure and a control method thereof, characterized by comprising the following operating steps:

[0016] Step 1: Mold front film assembly process:

[0017] a. Install the two front mold cores into the A plate respectively and fix them with screws;

[0018] b. Then evenly distribute the multiple shovel bases and install them into the two front molds, and then fix them with screws;

[0019] c. Then fix all the spring guide blocks on the A plate with screws, and fix the spring and spring on the A plate with screws and screw sleeves. Check whether the spring movement is normal. Use the same method to operate other spring blocks.

[0020] d. Fix the hot runner plate to the A plate with screws, then install the hot runner assembly into the hot runner plate, A plate and front mold core, and install the hot runner socket, air pipe, water pipe and water collecting block;

[0021] e. Finally, fix the panel on the A board;

[0022] Step 2: Mold and film assembly process:

[0023] a. Fix multiple top blocks B and top rods B into a whole and place them aside;

[0024] b. Then fix the top block A, wear-resistant plate, positioning glass beads, return spring and top rod A in plate B with screws respectively;

[0025] c. Then install the two rear mold cores into the B plate and fix them with screws;

[0026] d. Then, after the oil cylinder and the transmission equipment connected to the oil cylinder are fixed and installed with bolts;

[0027] e. Fix the wear-resistant plate and the hook to the B plate with screws; f. Then fix the multiple ejector panels in the mold to the B plate with equal height sleeves. The return pins and ejector pins, as well as the parts that match the ejector block, can be installed into the mold and fixed with screws;

[0028] g. Finally, classify and install all the remaining parts of the mold;

[0029] The third step: mold injection process, mold closing operation, that is, the rear mold of the first molding is matched with the front mold of the second molding, and the rear mold of the second molding is matched with the front mold of the first molding. The shovel base of each part is directly inserted into the original position slider, and both sides of the mold are injected at the same time. During the first injection, the plastic enters the mold cavity closed area through the hot runner assembly, wherein the mold cavity closed area is composed of the front mold core, the rear mold core and a plurality of sliders. After the injection is completed, the mold is kept under pressure until the product is cooled; during the second injection, the plastic enters the mold cavity closed area through the hot runner assembly, wherein the mold cavity closed area is composed of the front mold core, the rear mold core, the product, a plurality of spring blocks and a plurality of sliders. After that, the mold is kept under pressure, and the valve needle of the hot runner assembly is closed until the product is cooled;

[0030] During the mold opening operation, the shovel base under plate A separates from the slider in plate B, and the slider remains stationary under the action of the corresponding positioning glass beads, and is thus tightly combined with the product; at the same time, multiple spring blocks around one of the front mold cores move simultaneously under the action of the hook and spring, and together separate from the front mold core and the product; the injection molding machine drives the ejector rod on the secondary molding side, and the ejector plate moves forward. When the ejector plate moves, the ejector rod A, ejector block A, ejector rod B, and ejector block B can drive the product forward. After the product is separated from the rear mold core, the ejector blocks remain stationary, and then the oil cylinder is driven. After the oil cylinder is started, the output end of the oil cylinder moves backward, thereby driving the slider to move backward. At this time, the slider falls off the product, and finally the product can be taken out by the robot arm;

[0031] After the removal is completed, the ejector plate of the mold is reset, thereby driving the ejector block and ejector rod connected to it to reset, and then the oil cylinder is driven to perform the reset operation, so that the slider moves to its original position. After the reset is completed, the mold is rotated 180° so that the next cycle can be carried out.

[0032] After the second injection molding cycle, the mold opens, and the four springs begin to move, driven by the hooks and springs. After 30 mm of movement, they completely detach from the product. Ejection begins, and the mold ejector plate drives the four ejector blocks forward. Two of these ejector blocks directly move the product forward, while the other two drive the upper sliders forward (note: the sliders are inseparable from the product). The sliders, in turn, move the product forward together. After 35 mm of movement, the suction cups secure the product, and the hydraulic cylinder drives the sliders backward to release the product. The robot then removes the product.

[0033] Compared with existing technologies, this injection mold with an ejector and a strong release mechanism and its control method can reduce the workload of R&D personnel, shorten development time, and ensure product functionality. It solves the problem of incomplete demolding after injection molding, leading to scrap. It also shortens the molding cycle and meets the requirements of robotic gripping processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 This is a 3D structural diagram of the entire mold of the injection mold of the present invention;

[0035] Figure 2 3D structural diagram of the fixed side of the injection mold of the present invention;

[0036] Figure 3 3D structural diagram of the movable side of the injection mold of the present invention;

[0037] Figure 4 This is a schematic diagram of the three-dimensional structure of the plastic product of the present invention;

[0038] Figure 5 A cross-sectional view of the first injection molding of the injection mold of the present invention;

[0039] Figure 6 This is a 2D structural diagram of a special top block structure of an injection mold of the present invention;

[0040] Figure 7 This is a schematic diagram of the 2D structure of the injection mold of the present invention after the product is ejected 35 mm;

[0041] Figure 8 Schematic diagram of the structure of the injection mold 1ST.2ND of the present invention after the rear mold is ejected;

[0042] Figure 9 This is a schematic diagram of the 2D structure of the injection mold of the present invention after being ejected 35 mm and after the cylinder core is pulled;

[0043] Figure 10 This is a schematic diagram of the 2D structure of the injection mold of the present invention after removing the part and closing the mold;

[0044] Figure 11 3D schematic diagram of the top block structure of the injection mold of the present invention;

[0045] Figure 12 This is a schematic diagram of the 2D structure of the spring block structure during the second injection molding of the injection mold of the present invention;

[0046] Figure 13 This is a three-dimensional schematic diagram of the spring block structure during the second injection molding of the injection mold of the present invention;

[0047] Figure 14 The invention provides a mold injection process for the injection mold.

[0048] In the figure: 1. Plate B; 2. Plate A; 3. Front mold core; 5. Forced release structure; 6. Ejector structure; 7. Slider; 8. Ejector block A; 9. Connecting rod; 10. Shovel base; 11. Positioning glass beads; 12. Cylinder; 13. Spacer; 14. Return spring; 15. Wear-resistant plate; 16. Ejector rod A; 17. Ejector plate; 18. Limiting part; 19. Bottom plate; 20. Hot runner assembly; 21. Ejector rod; 22. Hot runner plate; 23. Ejector panel; 24. Ejector bottom plate; 25. Panel; 26. Ejector rod B; 27. Ejector block B; 28. Back mold core; 29. ​​Spring block; 30. Spring block guide block; 31. Hook spring; 34. Product. DETAILED DESCRIPTION

[0049] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0050] See also Figures 1 to 14The present invention provides a technical solution: an injection mold with ejection and a strong release structure, comprising a B plate 1 and a product 34 that can be adjusted in vertical displacement and angle, the B plate 1 is provided with a plurality of rear mold cores 28 embedded and connected with the B plate 1, an A plate 2 corresponding to the B plate 1 is provided above the B plate 1, and a plurality of front mold cores 3 embedded and connected with the A plate 2 are provided at the lower end of the A plate 2, the number of rear mold cores 28 in the B plate 1 is two and the two rear mold cores 28 are symmetrically distributed, the number of front mold cores 3 in the A plate 2 is two, and the structures and shapes of the two front mold cores 3 are different, the groove wall of one front mold core 3 is smooth, and the groove wall of the other front mold core 3 is smooth. The groove wall is provided with a protrusion corresponding to the product 34, and the outer periphery of the other front mold core 3 is provided with a plurality of spring blocks 29 that slide along the outer wall of the front mold core 3, and a mold cavity closed area is formed between the spring blocks 29 and the slider 7, the front mold core 3, the rear mold core 28 and the product 34. A hot runner plate 22 connected to the A plate 2 is provided on the A plate 2, and the hot runner plate 22 is used to position and install the hot runner assembly 20. The output end of the hot runner assembly 20 extends downward to the enclosed space formed by the front mold core 3, the rear mold core 28 and the strong release structure 5. A panel 25 for limiting and fixing the hot runner assembly 20 is provided above the hot runner plate 22. Between the B plate 1 and the A plate 2 A forced release structure 5 is provided which can be adjusted for a small sliding motion and is used to seal the cavity area formed between the front mold core 3 and the rear mold core 28 and to remove the product 34 in the cavity area. A hot runner assembly 20 is provided on the A plate 2 for injection molding the cavity closed area formed by the front mold core 3, the rear mold core 28 and the forced release structure 5 and forming the product 34. An ejection structure 6 is provided in the B plate 1 for ejecting the product 34. The forced release structure 5 includes a plurality of sliders 7 which slide slightly between the A plate 2 and the B plate 1 and a plurality of spring blocks 29. The output end of the slider 7 extends between the B plate 1 and the A plate 2 and contacts the product 34. , the spring block 29 is located in one of the front mold cores 3 and the output end of the spring block 29 conflicts with the product 34; the ejection structure 6 includes a top block A8 and a top block B27, the top block A8 contacts the slider 7 and can push the slider 7 to slide up and down, the top block B27 is located in the groove of the rear mold core 28 and slides up and down along the groove of the rear mold core 28, the initial position of the slider 7 is transmitted by the connecting rod 9, and a shovel base 10 is provided below the A plate 2 for pushing the slider 7 to slide secondary after the initial movement, and the shovel base 10 is fixed by screws, and a spring guide block 30 is provided on the outer periphery of one of the front mold cores 3, which is connected to the front mold core 3 and positions the sliding of the spring block 29;A positioning glass bead 11 is provided above the top block A8 and is connected to the top block A8 and is used to position and lock the movement of the slider 7. The up and down sliding of the top block A8 is pushed by multiple top rods A16, and the top rod A16 is empty in the B plate 1. The up and down sliding of the top block B27 is pushed by multiple top rods B26, and the top rod B26 is empty in the B plate 1. The transmission of the connecting rod 9 is driven by the oil cylinder 12. A pad 13 is provided on the B plate 1 for limiting the transmission of the connecting rod 9. A hook spring 31 connected to the spring block 29 and having an elastic return is provided below the front mold core 3; a return spring 14 connected to the positioning glass bead 11 and having an elastic return is provided in the top block A8. A spring for sliding the slider 7 is provided between the bottom of the slider 7 and the top of the top block A8. Supporting wear-resistant plate 15, below plate B 1 is a pin plate 17 connected to pins A16 and B26, which pushes pins A16 and B26 to slide up and down. Pin plate 17 moves up and down along plate B 1 via screws. Pin plate 17 is provided with a stopper 18 connected to pin plate 17 to prevent it from interfering with plate B 1. Below plate B 1 is a bottom plate 19, and below bottom plate 19 is a pin rod 21 that pushes pin plate 17 for vertical adjustment. Pin plate 17 includes a pin panel 23 and a pin bottom plate 24. Pin panel 23 is located above pin bottom plate 24 and is fixed to pin bottom plate 24 via screws. Pin bottom plate 24 is also fixed to the bottom of plate B 1 via screws.

[0051] An injection mold with an ejector and a forced release structure and a control method thereof, characterized by comprising the following operating steps:

[0052] Step 1: Mold front film assembly process:

[0053] a. Install the two front mold cores 3 into the A plate 2 respectively and fix them with screws;

[0054] b. Then evenly distribute the multiple shovel bases 10 and install them into the two front mold cores 3, and then fix them with screws;

[0055] c. Then fix all the spring guide blocks 30 to the A plate 2 with screws, and fix the spring 29 and the spring to the A plate with screws and screw sleeves. Check whether the spring 29 moves normally. The other springs 29 are operated in the same way.

[0056] d. Fix the hot runner plate 22 to the A plate 2 with screws, then install the hot runner assembly 20 into the hot runner plate 22, A plate 2 and the front mold core 3, and install the hot runner socket, air pipe, water pipe and water collecting block;

[0057] e. Finally, fix the panel 25 on the A board 2;

[0058] Step 2: Mold and film assembly process:

[0059] a. Fix multiple top blocks B27 and top rods B26 into a whole and place them aside;

[0060] b. Then fix the top block A8, wear-resistant plate 15, positioning glass bead 11, return spring 14 and top rod A in plate B 1 with screws respectively;

[0061] c. Then install the two rear mold cores 28 into the B plate 1 and fix them with screws;

[0062] d. Then, after the oil cylinder 12 and the transmission equipment connected to the oil cylinder are fixed and installed by bolts;

[0063] e. Fix the wear-resistant plate 15 and the draw hook on the B plate 1 with screws; f. Then fix the multiple ejector panels 23 in the mold on the B plate 1 with equal height sleeves, and then install the return pins and ejector pins, as well as the parts that match the ejector block, into the mold and fix them with screws;

[0064] g. Finally, classify and install all the remaining parts of the mold;

[0065] Step 3: Mold injection process, mold closing operation, that is, the rear mold of the first molding is matched with the front mold of the second molding, and the rear mold of the second molding is matched with the front mold of the first molding. The shovel base 10 of each part is directly inserted into the original position slider 7, and both sides of the mold are injected at the same time. During the first injection, the plastic enters the mold cavity closed area through the hot runner assembly 20, wherein the mold cavity closed area is composed of the front mold core 3, the rear mold core 28 and a plurality of sliders 7. After the injection is completed, the mold is kept under pressure until the product 34 is cooled. During the second injection, the plastic enters the mold cavity closed area through the hot runner assembly 20, wherein the mold cavity closed area is composed of the front mold core 3, the rear mold core 28, the product 34, a plurality of spring blocks and a plurality of sliders. After that, the mold is kept under pressure, and the valve needle of the hot runner assembly 20 is closed until the product 34 is cooled.

[0066] During the mold opening operation, the shovel base 10 below the A plate 1 is separated from the slider 7 in the B plate, and the slider 7 remains stationary under the action of the corresponding positioning glass beads 11, and is then tightly combined with the product 34; at the same time, the multiple spring blocks 29 around one of the front mold cores move simultaneously under the action of the hook and the spring 31, and together leave the front mold core 3 and the product 34; the injection molding machine drives the ejector rod 21 on the secondary molding side, and the ejector plate 17 moves forward. When the ejector plate 17 moves, the ejector rod A16, the ejector block A8, the ejector rod B26 and the ejector block B27 can drive the product 34 to move forward. After the product 34 is separated from the rear mold core 28, the ejector blocks are stationary, and then the oil cylinder 12 is driven. After the oil cylinder 12 is started, the output end of the oil cylinder 12 moves backward, thereby driving the slider 7 to move backward. At this time, the slider 7 falls off the product 34, and finally the product 34 can be taken out by the robot.

[0067] After the removal is completed, the ejector plate 17 of the mold is reset, thereby driving the ejector block and ejector rod connected thereto to be reset, and then the oil cylinder 12 is driven to perform the reset operation, so that the slider 7 moves to its original position. After the reset is completed, the mold is rotated 180° so that the next cycle can be carried out.

[0068] The electrical components mentioned in this article are all connected to an external main controller and 380V commercial electricity, and the main controller can be a conventional known device that performs control, such as a computer.

[0069] In summary, this injection mold with an ejector and a strong release mechanism, and its control method, can reduce the workload of R&D personnel, shorten development time, and ensure product functionality. It also solves the problem of incomplete demolding after injection molding, leading to scrap. It also shortens the molding cycle and meets the requirements of robotic gripping processes.

[0070] In the description of this specification, the terms "connect", "install", "fix", "set", etc. are understood in a broad sense. For example, "connection" can be a fixed connection or an indirect connection through an intermediate component without affecting the relationship between components and the technical effect. It can also be an integral connection or a partial connection. As in this example, for ordinary technicians in this field, the specific meanings of the above terms in the present invention or in the invention can be understood according to the specific circumstances.

[0071] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An injection mold with ejection and a strong ejection structure, comprising a B plate (1) capable of adjusting the vertical displacement and the angle and a product (34), characterized in that: The B plate (1) is provided with a plurality of rear mold cores (28) embedded and connected to the B plate (1), an A plate (2) corresponding to the B plate (1) is provided above the B plate (1), and a plurality of front mold cores (3) embedded and connected to the A plate (2) are provided at the lower end of the A plate (2), a forced release structure (5) capable of small-amplitude sliding adjustment is provided between the B plate (1) and the A plate (2), and the forced release structure (5) is used to seal the mold cavity area formed between the front mold core (3) and the rear mold core (28) and to remove the product (34) in the mold cavity area, the A plate (2) is provided with a hot runner assembly (20) for injection molding the mold cavity closed area formed by the front mold core (3), the rear mold core (28) and the forced release structure (5) and forming the product (34), and the B plate (1) is provided with an ejection structure (6) for ejecting the product (34); The forced release structure (5) includes a plurality of sliders (7) that slide slightly between the A plate (2) and the B plate (1) and a plurality of spring blocks (29), the output end of the slider (7) extends between the B plate (1) and the A plate (2) and contacts the product (34), the spring block (29) is located in one of the front mold cores (3) and the output end of the spring block (29) contacts the product (34); the ejection structure (6) includes a top block A (8) and a top block B (27), the top block A (8) contacts the slider (7) and can push the slider (7) to slide up and down, the top block B (27) is located in the groove of the rear mold core (28) and slides up and down along the groove of the rear mold core (28); The number of rear mold cores (28) in the B plate (1) is two, and the two rear mold cores (28) are symmetrically distributed. The number of front mold cores (3) in the A plate (2) is two, and the structures and shapes of the two front mold cores (3) are different. A hot runner plate (22) connected to the A plate (2) is provided on the A plate (2), and the hot runner plate (22) is used to position and install the hot runner assembly (20). The output end of the hot runner assembly (20) extends downward to the enclosed space formed by the front mold core (3), the rear mold core (28) and the forced release structure (5). A panel (25) for limiting and fixing the hot runner assembly (20) is provided above the hot runner plate (22).

2. The injection mold with ejection and strong release structure according to claim 1, characterized in that: The initial position of the slider (7) is transmitted through the connecting rod (9), and a shovel base (10) is provided below the A plate (2) for pushing the slider (7) to slide for the second time after the initial movement, and the shovel base (10) is fixed by screws. The outer periphery of one of the front mold cores (3) is provided with a spring guide block (30) connected to the front mold core (3) and positioning the sliding of the spring block (29); a positioning glass bead (11) is provided above the top block A (8) and connected to the top block A (8) and positioning and locking the movement of the slider (7). The up and down sliding of the top block A (8) is pushed by multiple top rods A (16) and the top rods A (16) are hollowly sleeved in the B plate (1), and the up and down sliding of the top block B (27) is pushed by multiple top rods B (26) and the top rods B (26) are hollowly sleeved in the B plate (1).

3. The injection mold with ejection and strong release structure according to claim 2, characterized in that: The transmission of the connecting rod (9) is driven by the oil cylinder (12). The B plate (1) is provided with a pad (13) for limiting the transmission of the connecting rod (9). A hook spring (31) connected to the spring block (29) and elastically returning is provided below the front mold core (3). A return spring (14) connected to the positioning glass bead (11) and elastically returning is provided in the top block A (8). A wear-resistant plate (15) for supporting the sliding of the slider (7) is provided between the bottom of the slider (7) and the top of the top block A (8). A pin plate (17) connected to the top rod A (16) and the top rod B (26) and pushing the top rod A (16) and the top rod B (26) to slide up and down is provided below the B plate (1).

4. The injection mold with ejection and strong release structure according to claim 3, characterized in that: The ejector plate (17) is moved up and down along the B plate (1) by screws. The ejector plate (17) is provided with a limiter (18) connected to the ejector plate (17) and preventing the ejector plate (17) from interfering with the B plate (1). A bottom plate (19) is provided below the B plate (1) and an ejector rod (21) is provided below the bottom plate (19) for pushing the ejector plate (17) to adjust the displacement up and down. The ejector plate (17) includes an ejector panel (23) and an ejector bottom plate (24). The ejector panel (23) is located above the ejector bottom plate (24) and the ejector panel (23) and the ejector bottom plate (24) are fixed by screws. The ejector bottom plate (24) is fixed to the bottom of the B plate (1) by screws.

5. The injection mold with ejection and strong release structure according to claim 1, characterized in that: The groove wall of one of the front mold cores (3) is smooth, the groove wall of the other front mold core (3) is provided with a protrusion corresponding to the product (34), and the outer periphery of the other front mold core (3) is provided with a plurality of spring blocks (29) that slide along the outer wall of the front mold core (3), and a mold cavity closed area is formed between the spring blocks (29) and the slider (7), the front mold core (3), the rear mold core (28) and the product (34).

6. A control method for an injection mold with ejection and a forced release structure according to claim 4, characterized in that: The steps are as follows: Step 1: Mold front film assembly process: a. Install the two front mold cores (3) into the A plate (2) respectively and fix them with screws; b. Then evenly distribute the multiple shovel bases (10) and install them into the two front mold cores (3), and then fix them with screws; c. Then fix all the multiple spring guide blocks (30) on the A plate (2) with screws, and fix the spring (29) and the spring on the A plate with screws and screw sleeves, and check whether the spring (29) moves normally. The other spring blocks (29) are operated in the same way; d. Fix the hot runner plate (22) to the A plate (2) with screws, then install the hot runner assembly (20) into the hot runner plate (22), the A plate (2) and the front mold core (3), and install the hot runner socket, air pipe, water pipe and water collecting block; e. Finally, fix the panel (25) on the A plate (2); Step 2: Mold and film assembly process: a. Fix multiple top blocks B (27) and top rods B (26) into a whole and place them aside; b. Then fix the top block A (8), wear plate (15), positioning glass bead (11), return spring (14) and top rod A in plate B (1) with screws respectively; c. Then install the two rear mold cores (28) into the B plate (1) and fix them with screws; d. Then, after the oil cylinder (12) and the transmission device connected to the oil cylinder are fixed and installed by bolts; e. Fix the wear-resistant plate (15) and the hook on the B plate (1) with screws; f. Then, multiple ejector panels (23) in the mold are fixed on the B plate (1) with equal height sleeves, and the return pins and ejector pins and parts that match the ejector block are installed into the mold and fixed with screws; g. Finally, classify and install all the remaining parts of the mold; Step 3: mold injection process, mold closing operation, that is, the rear mold of the first molding is matched with the front mold of the second molding, and the rear mold of the second molding is matched with the front mold of the first molding, and the shovel base (10) of each part is directly inserted into the original position slider (7), and both sides of the mold are injected at the same time. During the first injection, the plastic enters the mold cavity closed area through the hot runner assembly (20), wherein the mold cavity closed area is composed of the front mold core (3), the rear mold core (28) and a plurality of sliders (7). After the injection is completed, the mold is kept under pressure until the product (34) is cooled; during the second injection, the plastic enters the mold cavity closed area through the hot runner assembly (20), wherein the mold cavity closed area is composed of the front mold core (3), the rear mold core (28), the product (34), a plurality of spring blocks and a plurality of sliders, and then the mold is kept under pressure, and the valve needle of the hot runner assembly (20) is closed until the product (34) is cooled; During the mold opening operation, the shovel base (10) below the A plate (2) is separated from the slider (7) in the B plate, and the slider (7) remains stationary under the action of the corresponding positioning glass beads (11), and is then tightly combined with the product (34); at the same time, multiple spring blocks (29) around one of the front mold cores move simultaneously under the action of the draw hook and the spring (31), and together leave the front mold core (3) and the product (34); the injection molding machine drives the ejector rod (21) on the second molding side, and the ejector plate (17) moves forward, and waits for the ejector plate (17) to move forward. When the ejector plate (17) moves, the ejector rod A (16), ejector block A (8), ejector rod B (26) and ejector block B (27) drive the product (34) to move forward. After the product (34) is separated from the rear mold core (28), each ejector block stops moving. Then, the oil cylinder (12) is driven. After the oil cylinder (12) is started, the output end of the oil cylinder (12) moves backward, thereby driving the slider (7) to move backward. At this time, the slider (7) falls off the product (34), and finally the product (34) can be taken out by the robot. After the removal is completed, the ejector plate (17) of the mold is reset, thereby driving the ejector block and ejector rod connected thereto to reset, and then the oil cylinder (12) is driven to perform a reset operation, so that the slider (7) moves to the original position. After the reset is completed, the mold is rotated 180 degrees to proceed to the next cycle.

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