Split type pitched roof mold structure and demolding method

Abstract

The invention discloses a split type pitched roof mold structure and a demolding method.The split type pitched roof mold structure comprises a forming mold, an embedding groove is formed in a forming area of the forming mold, a split type upward-moving pitched roof is movably arranged in the embedding groove, and the split type upward-moving pitched roof comprises an insert arranged in the embedding groove; a first pitched roof and a second pitched roof are arranged between the two sides of the insert and the inner wall of the caulking groove in a sliding mode, the bottom of the second pitched roof is connected with the first pitched roof in a sliding fit mode in the horizontal direction, and the first pitched roof and the second pitched roof which are located on the same side of the insert are opposite in inclined sliding direction along the insert; the top ends of the first pitched roof and the second pitched roof are provided with stepped half grooves which can be mutually spliced to form a circular truncated cone-shaped concave hole, and the bottom of the first pitched roof is provided with an ejector pin; through the structure that the first pitched roof and the second pitched roof are arranged in a split mode, the second pitched roof is driven to conduct linkage through movement of the first pitched roof, and then rapid demolding of a formed product with a reversely-buckled circumferential structure and a stepped boss can be achieved in a narrow space in the mold.

Description

Technical Field

[0001] The invention belongs to the technical field of plastic molds, and in particular relates to a split-type inclined top mold structure and a demoulding method. Background Art

[0002] In the process of plastic mold injection molding, after the product is injection molded, it is necessary to apply external force to the product to release the product from the mold. In the case where the peripheral structure on the molded product is undercut and there is a stepped boss, it is difficult to demold the molded product by conventional inclined ejectors after the product is formed in the traditional molding mold when the internal space of the mold is very limited. Therefore, in order to meet the narrow space limitation inside the mold and to realize convenient post-molding demolding of products with undercut peripheral structures and stepped bosses, the present invention discloses a split inclined ejector mold structure and demolding method. Summary of the invention

[0003] The present invention discloses a split-type inclined top mold structure and a demoulding method. Through the structure in which a first inclined top and a second inclined top are separately arranged, the movement of the first inclined top drives the second inclined top to be linked, thereby enabling rapid demoulding of a formed product with an undercut circumferential structure and a stepped boss in a narrow space inside the mold.

[0004] The present invention is achieved through the following technical solutions: A split inclined top mold structure comprises a forming mold, a molding area of ​​the forming mold is provided with an embedding groove, a split upper inclined top is movably provided in the embedding groove, the split upper inclined top comprises an insert arranged in the embedding groove, a first inclined top and a second inclined top are slidably provided between the two sides of the insert and the inner wall of the embedding groove, the bottom of the second inclined top is slidably connected with the first inclined top in a horizontal direction, and the first inclined top and the second inclined top located on the same side of the insert are opposite to the inclined sliding direction of the insert; the top ends of the first inclined top and the second inclined top are provided with stepped half grooves which can be assembled with each other to form a truncated cone-shaped concave hole, and the bottom of the first inclined top is provided with an ejector pin.

[0005] When the push pin applies an upward force to the first inclined top, the first inclined top slides upward along the first inclined direction under the limiting and guiding action of the insert, and while the first inclined top slides upward, it drives the second inclined top to slide upward along the second inclined direction, thereby making the stepped half-groove at the top of the first inclined top and the stepped half-groove at the top of the second inclined top move away from each other, so as to lift the formed product while loosening and releasing the stepped frustum on the formed product by moving the stepped half-grooves away from each other, so that the product can be quickly demolded.

[0006] When the pin applies a downward force to the first inclined top, the first inclined top slides downward along the first inclined direction under the limiting and guiding action of the insert, and while the first inclined top slides downward, it drives the second inclined top to slide downward along the second inclined direction, thereby making the stepped half groove at the top of the first inclined top and the stepped half groove at the top of the second inclined top move closer to each other, so as to achieve the resetting of the inclined top.

[0007] In order to better realize the present invention, further, a forming area is provided on the forming mold on the left and right sides of the embedding groove, and when the split upper inclined top is reset, the insert, the first inclined top and the second inclined top are recovered into the embedding groove, and when the split upper inclined top is ejected, the first inclined top and the second inclined top extend upward out of the embedding groove, and the stepped half grooves at the top ends of the first inclined top and the second inclined top are separated from each other.

[0008] In order to better realize the present invention, further, a plurality of auxiliary demoulding holes are arranged in the forming area, and an auxiliary demoulding ejector rod is arranged for internal sliding of the auxiliary demoulding control.

[0009] In order to better realize the present invention, further, a guide boss is arranged in the middle position of one side of the insert, inclined dovetail slides are symmetrically arranged on the left and right side walls of the guide boss, and a dovetail groove slidably connected to the dovetail slide is arranged on one side of the second inclined top.

[0010] In order to better realize the present invention, further, the insert is provided with inclined slide grooves in the left and right areas of the guide boss, and one side of the first inclined top is provided with an inclined sliding block slidably connected to the inclined slide groove, and the inclination direction of the inclined slide groove is opposite to the inclination direction of the dovetail slide.

[0011] In order to better implement the present invention, further, a horizontal slide groove is provided between the upper and lower ends of the first inclined roof, and a horizontal sliding block is provided at the bottom end of the second inclined roof to be slidably connected with the horizontal slide groove along the horizontal direction.

[0012] In order to better implement the present invention, further, a horizontal T-shaped groove is arranged at the bottom of the first inclined top in the horizontal direction, and a T-shaped slider is arranged at the top of the ejector pin, which is slidably connected to the horizontal T-shaped groove in the horizontal direction and clamped in the vertical direction.

[0013] In order to better implement the present invention, further, the top of the first inclined roof is provided with a first step half groove, the top of the second inclined roof is provided with a second step half groove, and the first step half groove and the second step half groove are combined to form a truncated cone-shaped concave hole.

[0014] A demoulding method for a split-type inclined top mold is implemented based on the split-type inclined top mold. When the mold is closed, the ejector pin retracts to drive the first inclined top and the second inclined top to be stored in the embedded groove of the forming mold, so that the top surfaces of the insert, the first inclined top and the second inclined top are transitionally connected with the forming area of ​​the forming mold, and at the same time, the stepped half grooves at the top ends of the first inclined top and the second inclined top are spliced ​​to form a truncated cone-shaped concave hole to form an injection cavity; when demoulding, the ejector pin pushes out to drive the first inclined top and the second inclined top to extend synchronously from the embedded groove to push the part to be demoulded, and at the same time, the first inclined top and the second inclined top slide horizontally away from each other, so that the stepped half grooves at the top ends of the first inclined top and the second inclined top are separated to loosen the boss structure on the part.

[0015] In order to better implement the present invention, further, the following steps are included: Step 1: The ejector pin drives the first and second inclined ejectors to retract into the embedded groove, so that the forming surfaces at the top ends of the first and second inclined ejectors are smoothly transitioned and connected with the forming area of ​​the forming mold to form an injection cavity, and injection molding is performed after the mold is closed; Step 2: After the part is cooled and formed, the ejector drives the first inclined ejector and the second inclined ejector to be ejected synchronously from the embedded groove with a first stroke, so that the shape surface of the part is pre-separated from the injection cavity; at the same time, the first inclined ejector and the second inclined ejector are horizontally separated from each other under the action of the insert, so that the stepped half grooves at the top ends of the first inclined ejector and the second inclined ejector are separated to loosen the boss structure on the part; Step 3: The ejector drives the first inclined ejector and the second inclined ejector to continue to eject synchronously with the second stroke, so that the part is completely ejected from the injection cavity; Step 4: After the parts are taken out, the ejector pin drives the first and second inclined ejectors to retract into the embedded grooves and reset.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects: The present invention can, when the internal space of the mold is relatively narrow and limited, drive the first inclined top to slide obliquely through the ejector pin, and at the same time drive the second inclined top to slide obliquely in the opposite direction through the first inclined top, thereby realizing the synchronous lifting and disengagement of the first inclined top and the second inclined top to achieve rapid demolding of the product, and realizing the synchronous lowering, splicing and resetting of the first inclined top and the second inclined top, thereby being able to adapt to the narrow demolding space and achieve rapid demolding of products with undercut peripheral structures and stepped bosses. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the split inclined top mold structure; Figure 2 It is a schematic diagram of the three-dimensional structure of the split-type upward inclined roof; Figure 3 This is the front view of the split-type upward inclined roof; Figure 4 It is a schematic diagram of the first inclined roof and the second inclined roof being assembled; Figure 5 is a schematic diagram of the separation of the first inclined roof and the second inclined roof; Figure 6 is a schematic diagram of the three-dimensional structure of the insert; Figure 7 It is the front view of the insert; Figure 8 is a structural schematic diagram of the first inclined roof; Fig. 9 It is a structural schematic diagram of the second inclined roof.

[0018] Among them: 1-insert; 2-throw pin; 3-forming mold; 4-auxiliary demoulding ejector pin; 100-first inclined ejector; 200-second inclined ejector; 11-guide boss; 12-positioning boss; 21-inclined slide groove; 22-inclined slider; 31-horizontal slide groove; 32-horizontal slider; 41-horizontal T-slot; 42-T-slot slider; 101-dovetail slide; 201-dovetail groove; 111-first step half groove; 222-second step half groove. DETAILED DESCRIPTION

[0019] Embodiment 1: This embodiment discloses a split type inclined top mold structure, such as Figure 1-Figure 3 As shown, it includes a forming mold 3, a molding groove is provided in the forming area of ​​the forming mold 3, a split upper inclined top is movably provided in the molding groove, the split upper inclined top includes an insert 1 provided in the molding groove, a first inclined top 100 and a second inclined top 200 are slidingly provided between the two sides of the insert 1 and the inner wall of the molding groove, the bottom of the second inclined top 200 is slidably connected with the first inclined top 100 in a horizontal direction, and the first inclined top 100 and the second inclined top 200 located on the same side of the insert 1 are in opposite directions of inclined sliding along the insert 1; the top ends of the first inclined top 100 and the second inclined top 200 are provided with stepped half grooves that can be assembled with each other to form a truncated cone-shaped concave hole, and the bottom of the first inclined top 100 is provided with a ejector pin 2.

[0020] like Figure 4 As shown, when the ejector pin 2 applies a downward force, it drives the first inclined ejector 100 to slide downward along the first inclined direction, and the first inclined ejectors 100 on the left and right sides move closer to each other. When the first inclined ejector 100 slides downward along the first inclined direction, the second inclined ejector 200 is driven to slide downward along the second inclined direction through the horizontal sliding matching structure, and the second inclined ejector 200 moves closer to the first inclined ejector 100, thereby causing the first inclined ejector 100 and the second inclined ejector 200 to reset downward, and at the same time, the stepped half grooves can be combined to form a truncated cone-shaped concave hole.

[0021] like Figure 5As shown, when the ejector pin 2 applies an upward force, it drives the first inclined ejector 100 to slide upward along the first inclined direction, and at this time, the first inclined ejectors 100 on the left and right sides move away from each other. When the first inclined ejector 100 slides upward along the first inclined direction, the second inclined ejector 200 is driven to slide upward along the second inclined direction through the horizontal sliding matching structure, and at this time, the second inclined ejector 200 moves away from the first inclined ejector 100, so that the first inclined ejector 100 and the second inclined ejector 200 can push the formed product upward, and at the same time, the stepped half grooves can be separated from each other, and the stepped truncated cone on the formed product can be loosened and released, so as to quickly demold the formed product.

[0022] Furthermore, forming areas are provided on the forming mold 3 on the left and right sides of the embedding groove, and when the split upper inclined top is reset, the insert 1, the first inclined top 100, and the second inclined top 200 are recovered into the embedding groove, and when the split upper inclined top is ejected, the first inclined top 100 and the second inclined top 200 are extended upward from the embedding groove, and the stepped half grooves at the top of the first inclined top 100 and the second inclined top 200 are separated from each other.

[0023] Furthermore, a plurality of auxiliary demoulding holes are provided in the forming area, and an auxiliary demoulding ejector rod 4 is provided internally slidingly. During the demoulding process, the auxiliary demoulding ejector rod 4 is ejected upward to assist the first inclined ejector 100 and the second inclined ejector 200 to synchronously eject the parts for demoulding, thereby ensuring that the force on the parts is relatively uniform during the demoulding process and avoiding the parts from being stretched or deformed.

[0024] Embodiment 2: This embodiment is further optimized on the basis of embodiment 1. Figure 4-Figure 7 As shown, a guide boss 11 is provided in the middle of one side of the insert 1, and inclined dovetail slides 101 are symmetrically provided on the left and right side walls of the guide boss 11, and a dovetail groove 201 is provided on one side of the second inclined top 200 to be slidably connected to the dovetail slide 101. The insert 1 is provided with inclined grooves 21 in the left and right areas of the guide boss 11, and an inclined slider 22 is provided on one side of the first inclined top 100 to be slidably connected to the inclined groove 21, and the inclined direction of the inclined groove 21 is opposite to the inclined direction of the dovetail slide 101.

[0025] The guide boss 11 is a right-standing triangular structure with a small top and a large bottom. The dovetail slides 101 on the left and right sides of the guide boss 11 are arranged along the two side edges of the right-standing triangular structure. A dovetail groove 201 is arranged on the side of the second inclined top 200 close to the guide boss 11. The dovetail groove 201 is connected with the dovetail slide 101 in a sliding manner, thereby guiding the sliding of the second inclined top 200. When the dovetail groove 201 slides upward along the dovetail slide 101, the second inclined top 200 and the first inclined top 100 move away from each other; when the dovetail groove 201 slides downward along the dovetail slide 101, the second inclined top 200 and the first inclined top 100 move toward each other. Through the cooperation of the dovetail slide 101 and the dovetail groove 201, the interaction of the second inclined top 200 can be guided, ensuring that the second inclined top 200 smoothly approaches and splices with the first inclined top 100 or moves away from it.

[0026] The other parts of this embodiment are the same as those of Embodiment 1, and thus will not be described in detail.

[0027] Embodiment 3: This embodiment is further optimized on the basis of the above embodiment 1 or 2. Figure 4 , Figure 5 , Figure 8 , Fig. 9 As shown, a horizontal slide groove 31 is provided between the upper and lower ends of the first inclined lift 100, and a horizontal slider 32 is provided at the bottom end of the second inclined lift 200 to be slidably connected to the horizontal slide groove 31 in the horizontal direction. A horizontal T-shaped groove 41 is provided at the bottom of the first inclined lift 100 in the horizontal direction, and a T-shaped slider 42 is provided at the top end of the ejector pin 2 to be slidably connected to the horizontal T-shaped groove 41 in the horizontal direction and to be clamped in the vertical direction.

[0028] Specifically, a horizontal slide groove 31 is provided at the middle of the first inclined top 100, and a horizontal slider 32 is provided at the bottom of the second inclined top 200, which extends into the interior of the horizontal slide groove 31 and is slidably connected with the horizontal slide groove 31. When the first inclined top 100 slides upward or downward, the horizontal slide groove 31 can apply an upward or downward force to the horizontal slider 32, thereby driving the second inclined top 200 to slide upward or downward, so that the first inclined top 100 drives the second inclined top 200 to be linked, ensuring that the first inclined top 100 and the second inclined top 200 are synchronously lifted and lowered, and can also move away from or close to each other synchronously. The T-shaped slider 42 is slidably connected with the horizontal T-shaped slot 41 in the horizontal direction, and the T-shaped slider 42 is clamped with the horizontal T-shaped slot 41 in the vertical direction. When the ejector pin 2 is pushed up or pulled down, the first inclined top 100 can be driven to move upward or downward by the T-shaped slider 42.

[0029] The other parts of this embodiment are the same as those of the above-mentioned embodiment 1 or 2, and thus will not be described in detail.

[0030] Embodiment 4: This embodiment is further optimized based on any one of the above embodiments 1-3. Figure 8 As shown, the top of the first inclined top 100 is provided with a first stepped half groove 111, and the top of the second inclined top 200 is provided with a second stepped half groove 222, and the first stepped half groove 111 and the second stepped half groove 222 are assembled to form a truncated cone-shaped concave hole. When the first inclined top 100 and the second inclined top 200 are close to each other to the assembled state, the first stepped half groove 111 and the second stepped half groove 222 are assembled to form a truncated cone-shaped concave hole, and the truncated cone-shaped concave hole cooperates with the stepped boss on one side of the formed product to realize the positioning of the formed product. When the first inclined top 100 and the second inclined top 200 are away from each other to the separated state, the first stepped half groove 111 and the second stepped half groove 222 are separated to loosen and release the stepped boss of the formed product, so as to facilitate the convenient demolding of the formed product.

[0031] Furthermore, the top of the first slanted top 100 and the top of the second slanted top 200 are both provided with positioning grooves or positioning protrusions. The positioning grooves are provided corresponding to the bottom end surface edges of the formed product, and the positioning protrusions are provided corresponding to the grooves at the bottom of the formed product, thereby realizing rapid positioning of the formed product.

[0032] Further, such as Figure 6 and Figure 7 As shown, at least one positioning boss 12 is disposed at the top end of the insert 1, and the positioning boss 12 is disposed corresponding to the positioning hole on the formed product. The formed product is further positioned by the cooperation between the positioning boss 12 and the positioning hole.

[0033] The other parts of this embodiment are the same as any one of the above embodiments 1-3, so they are not repeated here.

[0034] Embodiment 5: The present embodiment discloses a demolding method for a split-type inclined ejector mold, which is implemented based on the split-type inclined ejector mold. When the mold is closed, the ejector pin 2 retracts to drive the first inclined ejector 100 and the second inclined ejector 200 to be stored in the embedded groove of the forming mold 3, so that the top surfaces of the insert 1, the first inclined ejector 100, and the second inclined ejector 200 are transitionally connected with the forming area of ​​the forming mold 3, and at the same time, the stepped half grooves at the top of the first inclined ejector 100 and the second inclined ejector 200 are spliced ​​to form a truncated cone-shaped concave hole to form an injection cavity; when demolding, the ejector pin 2 pushes out to drive the first inclined ejector 100 and the second inclined ejector 200 to extend synchronously from the embedded groove to push the part to be demolded, and at the same time, the first inclined ejector 100 and the second inclined ejector 200 slide horizontally away from each other, so that the stepped half grooves at the top of the first inclined ejector 100 and the second inclined ejector 200 are separated to loosen the boss structure on the part.

[0035] Further, the following steps are included: Step 1, the ejector pin 2 drives the first inclined ejector 100 and the second inclined ejector 200 to retract into the embedding groove, so that the forming surfaces at the top of the first inclined ejector 100 and the second inclined ejector 200 are smoothly transitioned and connected with the forming area of ​​the forming mold 3 to form an injection cavity, and injection molding is performed after the mold is closed; Step 2: After the part is cooled and formed, the ejector 2 drives the first inclined ejector 100 and the second inclined ejector 200 to be ejected synchronously from the embedded groove with a first stroke, so that the shape surface of the part is pre-separated from the injection cavity; at the same time, the first inclined ejector 100 and the second inclined ejector 200 are horizontally separated from each other under the action of the insert 1, so that the stepped half grooves at the top of the first inclined ejector 100 and the second inclined ejector 200 are separated to loosen the boss structure on the part; Step 3, the ejector 2 drives the first inclined ejector 100 and the second inclined ejector 200 to continue to eject synchronously with the second stroke, so that the part is completely ejected from the injection cavity; Step 4: After the parts are taken out, the ejector pin 2 drives the first inclined ejector 100 and the second inclined ejector 200 to retract into the embedding groove and reset.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A split type inclined ejector mold, comprising a forming mold (3), wherein a forming area of ​​the forming mold (3) is provided with an embedding groove, and a split upwardly moving inclined ejector is movably provided in the embedding groove, characterized in that: The split upper inclined top comprises an insert (1) arranged in an embedding groove, a first inclined top (100) and a second inclined top (200) are slidably arranged between the two sides of the insert (1) and the inner wall of the embedding groove, the bottom of the second inclined top (200) is slidably connected with the first inclined top (100) in a horizontal direction, and the first inclined top (100) and the second inclined top (200) located on the same side of the insert (1) are inclined in opposite directions along the insert (1); the top ends of the first inclined top (100) and the second inclined top (200) are provided with stepped half grooves that can be assembled with each other to form a truncated cone-shaped concave hole, and the bottom of the first inclined top (100) is provided with an ejector pin (2).

2. A split type inclined top mold according to claim 1, characterized in that: The forming mold (3) is provided with forming areas on the left and right sides of the embedding groove. When the split upper inclined top is reset, the insert (1), the first inclined top (100) and the second inclined top (200) are recovered into the embedding groove. When the split upper inclined top is ejected, the first inclined top (100) and the second inclined top (200) extend upward from the embedding groove, and the stepped half grooves at the top ends of the first inclined top (100) and the second inclined top (200) are separated from each other.

3. A split type inclined top mold according to claim 2, characterized in that: A plurality of auxiliary demoulding holes are arranged in the forming area, and an auxiliary demoulding ejector rod (4) is slidably arranged inside the auxiliary demoulding control.

4. A split type inclined top mold according to any one of claims 1 to 3, characterized in that: A guide boss (11) is provided in the middle of one side of the insert (1), inclined dovetail slides (101) are symmetrically provided on the left and right side walls of the guide boss (11), and a dovetail groove (201) slidably connected to the dovetail slide (101) is provided on one side of the second inclined top (200).

5. A split type inclined top mold according to claim 4, characterized in that: The insert (1) is provided with an inclined slide groove (21) in the area on the left and right sides of the guide boss (11), and one side of the first inclined top (100) is provided with an inclined sliding block (22) slidably connected to the inclined slide groove (21), and the inclined direction of the inclined slide groove (21) is opposite to the inclined direction of the dovetail slide (101).

6. A split type inclined top mold according to claim 5, characterized in that: A horizontal slide groove (31) is provided between the upper and lower ends of the first inclined top (100), and a horizontal sliding block (32) is provided at the bottom end of the second inclined top (200) and is slidably connected to the horizontal slide groove (31) in a horizontal direction.

7. A split type inclined top mold according to claim 6, characterized in that: A horizontal T-shaped groove (41) is provided at the bottom of the first inclined ejector (100) in the horizontal direction, and a T-shaped sliding block (42) is provided at the top of the ejector pin (2) and is slidably connected to the horizontal T-shaped groove (41) in the horizontal direction and is clamped in the vertical direction.

8. A split type inclined top mold according to claim 7, characterized in that: The top of the first inclined top (100) is provided with a first stepped half groove (111), and the top of the second inclined top (200) is provided with a second stepped half groove (222), and the first stepped half groove (111) and the second stepped half groove (222) are combined to form a truncated cone-shaped concave hole.

9. A demoulding method for a split-type inclined top mold, implemented based on the split-type inclined top mold according to any one of claims 1 to 8, characterized in that: When the mold is closed, the ejector pin (2) retracts to drive the first inclined top (100) and the second inclined top (200) to be stored in the embedded groove of the forming mold (3), so that the top surfaces of the insert (1), the first inclined top (100) and the second inclined top (200) are transitionally connected to the forming area of ​​the forming mold (3), and at the same time, the stepped half grooves at the top of the first inclined top (100) and the second inclined top (200) are spliced ​​to form a truncated cone-shaped concave hole to form an injection molding cavity; when the mold is released, the ejector pin (2) pushes out to drive the first inclined top (100) and the second inclined top (200) to extend synchronously from the embedded groove to push the part to be released from the mold, and at the same time, the first inclined top (100) and the second inclined top (200) slide horizontally away from each other, so that the stepped half grooves at the top of the first inclined top (100) and the second inclined top (200) are separated to release the boss structure on the part.

10. A split type inclined top mold demoulding method according to claim 9, characterized in that: The following steps are involved: Step 1, the ejector pin (2) drives the first inclined ejector (100) and the second inclined ejector (200) to retract into the embedding groove, so that the forming surfaces at the top of the first inclined ejector (100) and the second inclined ejector (200) are smoothly transitioned and connected with the forming area of ​​the forming mold (3) to form an injection cavity, and injection molding is performed after the mold is closed; Step 2: After the part is cooled and formed, the ejector pin (2) drives the first inclined ejector (100) and the second inclined ejector (200) to be ejected synchronously from the embedded groove with a first stroke, so that the surface of the part is pre-separated from the injection cavity; at the same time, the first inclined ejector (100) and the second inclined ejector (200) are horizontally separated from each other under the action of the insert (1), so that the stepped half grooves at the top of the first inclined ejector (100) and the second inclined ejector (200) are separated to release the boss structure on the part; Step 3: The ejector pin (2) drives the first inclined ejector (100) and the second inclined ejector (200) to continue to eject synchronously with the second stroke, so that the part is completely ejected from the injection molding cavity; Step 4: After the part is removed, the ejector pin (2) drives the first inclined ejector (100) and the second inclined ejector (200) to retract into the embedding groove and reset.

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