Injection mold convenient to demold

Abstract

The invention provides an injection mold convenient to demold, and relates to the technical field of injection molding machining, the injection mold convenient to demold comprises an injection inner mold and an injection outer mold, the injection inner mold is fixedly mounted on the left side of an inner mold mounting frame through an inner mold positioning seat, and the inner mold mounting frame is fixedly mounted on an injection molding machine; according to the mold demolding structure, the straight ejection effect of the demolding structure can be converted into straight ejection knocking action, a product is vibrated, demolding of the product is better facilitated, the ejection force needed during demolding of the product is improved, the probability that the product is damaged due to ejection during demolding is reduced, and the demolding quality of the mold is improved. The problems that in the demolding process of traditional injection molding equipment, a product adheres to the outer surface of an outer mold after being separated from an inner mold, outward pushing needs to be applied to the product through an ejection structure for demolding to assist demolding of the product, and for products which adhere too firmly and thin-wall products, the product cannot be easily demolded when auxiliary demolding is carried out are solved. And the plastic product is easily damaged by ejection in the ejection process of the ejection structure, so that unnecessary loss is caused.

Description

Technical Field

[0001] The present invention relates to the technical field of injection molding processing, and particularly relates to an injection mold facilitating demolding. Background Art

[0002] The demolding process is a key step in the operation of an injection mold, which ensures that the molded product can be smoothly removed from the mold. After injection molding is completed, the mold opening control component first controls a certain distance to be opened between the two mold bases. The inner mold first separates from the product, and the product adheres to the inner surface of the outer mold. Then, the product is pushed out from the inside of the outer mold through a demolding telescopic ejector rod, so that the product separates from the outer mold, and the product is completely released from the molding cavity, ensuring the molding quality of the product and effectively avoiding the problem of product sticking to the mold. It is an indispensable part of injection molding production.

[0003] During the demolding process of traditional injection molding equipment, after the product separates from the inner mold, it adheres to the outer surface of the outer mold. It is necessary to apply an outward pushing force to the product through a demolding pushing structure to assist the product in demolding. However, for products with too strong adhesion or thin-walled products, during the auxiliary demolding process, the plastic product is easily damaged by the pushing of the pushing structure, causing unnecessary losses. Summary of the Invention

[0004] The present invention relates to an injection mold facilitating demolding, aiming to solve the problem that during the demolding process of traditional injection molding equipment, after the product separates from the inner mold, it adheres to the outer surface of the outer mold, and it is necessary to apply an outward pushing force to the product through a demolding pushing structure to assist the product in demolding. However, for products with too strong adhesion or thin-walled products, during the auxiliary demolding process, the plastic product is easily damaged by the pushing of the pushing structure, causing unnecessary losses.

[0005] In the first aspect of the present disclosure, an injection mold facilitating demolding is provided, specifically including: an injection inner mold and an injection outer mold. The injection inner mold is fixedly installed on the left side of an inner mold mounting frame through an inner mold positioning seat, and the inner mold mounting frame is fixedly installed on an injection molding machine. The injection outer mold is fixedly installed on the right side of an outer mold mounting frame through an outer mold positioning seat. The outer mold mounting frame is movably connected to the injection molding machine, and the outer mold mounting frame is connected to a demolding propulsion mechanism inside the injection molding machine. The left end face of the outer mold mounting frame is fixedly connected with a demolding push cylinder through bolts. The push cylinder of the demolding push cylinder slidably penetrates and is connected to the outer mold mounting frame. The right end of the push rod of the demolding push cylinder is fixedly connected with an outer mold demolding push plate. The outer mold demolding push plate is slidably connected inside the outer mold mounting frame. An ejector pin for demolding is slidably connected inside both the outer mold mounting frame and the injection outer mold. The left side of the inner mold positioning seat is movably connected with an inner mold demolding push plate.

[0006] Preferably, a first guiding jack is provided on the inner mold positioning seat, an inner mold installation opening is penetrated through the center of the inner mold positioning seat, the inner mold installation opening is tightly sleeved on the injection inner mold, an inner mold top spring installation opening is provided below the left surface of the inner mold positioning seat, and an inner mold demolding top spring is fixedly connected inside the inner mold top spring installation opening.

[0007] Preferably, four inner mold push rod guides are fixedly connected to the right surface of the inner mold demolding push plate, the inner mold push rod guides are slidably connected in the first guiding jack, a top spring socket is provided on the lower side of the right surface of the inner mold demolding push plate, and the left end of the inner mold demolding top spring is fixedly connected to the inner surface of the top spring socket.

[0008] Preferably, four circular hole-structured top column guiding holes are penetrated through the right frame plate of the outer mold installation frame, and a circular hole-structured second guiding socket is horizontally penetrated through the center of the right frame plate of the outer mold installation frame.

[0009] Preferably, an outer mold installation opening is provided at the center of the outer mold positioning seat, and the outer mold installation opening is tightly sleeved on the injection outer mold.

[0010] Preferably, an outer mold demolding push hole is horizontally penetrated through the injection outer mold, and the right end of the outer mold demolding push hole is a frustum-shaped end groove.

[0011] Preferably, four outer mold push rod guides are fixedly connected to the right surface of the outer mold demolding push plate, the outer mold push rod guides penetrate and are slidably connected to the top column guiding holes and the outer mold positioning seat, a separating push rod is vertically welded to the center of the right surface of the outer mold demolding push plate, and a push rod limiting end is fixedly connected to the right end of the separating push rod.

[0012] Preferably, a push rod top spring is sleeved on the separating push rod, the left end of the push rod top spring is fixedly connected to the right surface of the outer mold demolding push plate, an annular elastic top ring is slidably connected to the outer mold push rod guide, the left end surface of the elastic top ring is fixedly connected to the right end of the push rod top spring, and two top column installation grooves are provided on the outer surface of the outer mold demolding push plate, and the axes of the top column installation grooves are perpendicular to the axis of the elastic top ring.

[0013] Preferably, an elastic top column is slidably connected inside the top column installation groove, a top column spring is sleeved on the elastic top column, both ends of the top column spring are respectively fixedly connected to the outer end surface of the top column installation groove and the inner end of the elastic top column, and the outer end of the elastic top column is processed with a conical top column cone head.

[0014] Preferably, the right end of the demolding top column is processed with a frustum-shaped top column end block, a top column inner cavity is provided inside the left end of the demolding top column, an inner convex ring is provided on the inner wall of the top column inner cavity, the cross section of the inner convex ring is in a triangular structure, and an outer limiting flange is processed at the left edge of the inner wall of the top column inner cavity.

[0015] The present invention provides an injection mold facilitating demolding, which has the following beneficial effects: When the injection mold in the present invention is in use, after injection molding is completed, the outer mold mounting frame moves to the left under the pulling action of the built-in demolding propulsion mechanism of the injection molding machine, so that the injection outer mold is separated from the injection inner mold and maintains a certain distance. Through the pushing action of the inner mold demolding spring on the inner mold demolding push plate, the inner mold demolding push plate pushes the product away from the injection inner mold and adheres to the inner surface of the injection outer mold. When separating the injection outer mold from the product, control the action of the demolding push cylinder. The demolding push cylinder pushes the outer mold demolding push plate to the right, so that the push rod pushes to the right into the inner cavity of the ejector pin and compresses the push rod spring during separation, and under the action of the push rod spring, the elastic top ring is pushed to move to the right, so that the ejector pin cone contacts the inner convex ring and temporarily limits the elastic top ring. As the push rod spring continues to be compressed, the pushing force applied to the elastic top ring gradually increases. Under the close contact between the ejector pin cone and the inner convex ring, a downward pushing force is applied to the elastic ejector pin, so that the elastic ejector pin contracts into the ejector pin mounting groove. After the elastic top ring loses its limit, it quickly moves to the right under the action of the push rod spring, and the ejector pin cone collides with the adjacent inner convex ring on the right, generating a knock on the demolding ejector pin and transmitting the knock to the product, so that the product can be more easily demolded after being vibrated; in the mold demolding structure of the present invention, the straight pushing action of the demolding structure can be converted into a straight pushing and knocking action, generating a vibration effect on the product, which is more conducive to the demolding of the product, increasing the pushing force required for product demolding, reducing the probability of product damage due to being pushed during demolding, and avoiding the situation of product breakage caused by the inability of the plastic product with a small thickness to withstand the pressure generated during the pushing process by the pushing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0017] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0018] In the drawings: Figure 1 A schematic diagram showing the overall structure of the present application is shown; Figure 2 A schematic diagram showing the structure of the present application in a separated state of two molds is shown; Figure 3 A schematic diagram showing the structure of the inner mold positioning seat, inner mold demolding push plate, outer mold mounting frame and outer mold positioning seat in a fully sectional and separated state of the present application is shown; Figure 4 A schematic diagram showing the structure of the inner mold positioning seat and the inner mold demolding push plate in a separated state is shown; Figure 5 A schematic diagram showing the structure of the outer mold demolding push plate of the present application is shown; Figure 6 A schematic diagram showing the internal structure of the demolding ejector pin of the present application is shown; Figure 7 Shows the structural schematic diagram of the push rod during separation of the present application; Figure 8 Shows the structural schematic diagram of the inner mold positioning seat, inner mold demolding push plate, outer mold mounting frame, and outer mold positioning seat in a disassembled state of the present application; Figure 9 Shows the structural schematic diagram of the first guiding jack of the present application; Figure 10 Shows the Figure 3 partial enlarged structural schematic diagram at position A in the present application; Figure 11 Shows the Figure 4 partial enlarged structural schematic diagram at position B in the present application; Figure 12 Shows the Figure 7 partial enlarged structural schematic diagram at position C in the present application.

[0019] List of reference numerals 1, injection molding machine; 2, inner mold mounting frame; 3, injection molding inner mold; 4, inner mold positioning seat; 401, first guiding jack; 402, inner mold mounting opening; 403, inner mold top spring mounting opening; 404, inner mold demolding top spring; 5, inner mold demolding push plate; 501, inner mold push plate guide rod; 502, top spring socket; 6, outer mold mounting frame; 601, ejector pin guide hole; 602, second guiding jack; 7, outer mold positioning seat; 701, outer mold mounting opening; 8, injection molding outer mold; 801, outer mold demolding push hole; 9, outer mold demolding push plate; 901, outer mold push plate guide rod; 902, push rod during separation; 903, push rod limit end; 904, push rod top spring; 905, elastic top ring; 906, ejector pin mounting groove; 907, elastic ejector pin; 908, ejector pin spring; 909, ejector pin cone head; 10, demolding ejector pin; 1001, ejector pin end block; 1002, ejector pin inner cavity; 1003, inner convex ring; 1004, outer limit flange; 11, demolding push cylinder. Detailed implementation manners

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0021] Embodiment 1: Please refer to Figures 1 to 12 : The present invention provides an injection mold facilitating demolding, including: an injection inner mold 3 and an injection outer mold 8. The injection inner mold 3 is fixedly installed on the left side of an inner mold mounting frame 2 through an inner mold positioning seat 4, and the inner mold mounting frame 2 is fixedly installed on an injection molding machine 1. The injection outer mold 8 is fixedly installed on the right side of an outer mold mounting frame 6 through an outer mold positioning seat 7, and the outer mold mounting frame 6 is movably connected to the injection molding machine 1. The outer mold mounting frame 6 is connected to a demolding propulsion mechanism inside the injection molding machine 1. The left end face of the outer mold mounting frame 6 is fixedly connected with a demolding push cylinder 11 through bolts. Four round hole-structured ejector pin guide holes 601 are penetrated and opened on the right frame plate of the outer mold mounting frame 6, and a second guide socket 602 with a round hole structure is horizontally penetrated through the center of the right frame plate of the outer mold mounting frame 6. The push cylinder of the demolding push cylinder 11 slidably penetrates and is connected to the outer mold mounting frame 6, and the right end of the push rod of the demolding push cylinder 11 is fixedly connected with an outer mold demolding push plate 9. The outer mold demolding push plate 9 is slidably connected inside the outer mold mounting frame 6. An ejector pin 10 for demolding is slidably connected together inside the outer mold mounting frame 6 and the injection outer mold 8. The left side of the inner mold positioning seat 4 is movably connected with an inner mold demolding push plate 5.

[0022] In an embodiment of the present disclosure, a first guide socket 401 is opened on the inner mold positioning seat 4, and an inner mold mounting opening 402 is penetrated through the center of the inner mold positioning seat 4. The inner mold mounting opening 402 is tightly sleeved on the injection inner mold 3. An inner mold top spring mounting opening 403 is opened below the left surface of the inner mold positioning seat 4, and an inner mold demolding top spring 404 is fixedly connected inside the inner mold top spring mounting opening 403; four inner mold push plate guide rods 501 are fixedly connected to the right surface of the inner mold demolding push plate 5, and the inner mold push plate guide rods 501 are slidably connected in the first guide socket 401 to play a guiding role. A top spring socket 502 is opened on the lower side of the right surface of the inner mold demolding push plate 5, and the left end of the inner mold demolding top spring 404 is fixedly connected to the inner surface of the top spring socket 502; when the injection inner mold 3 is separated from the injection outer mold 8, the distance between the inner mold positioning seat 4 and the outer mold positioning seat 7 increases, so that the two molds are separated. At the same time as the molds are separated, the inner mold demolding push plate 5 applies a continuous thrust to the product under the pushing action of the inner mold demolding top spring 404, so that the product is first separated from the injection inner mold 3.

[0023] In an embodiment of the present disclosure, an outer mold mounting opening 701 is opened at the center of the outer mold positioning seat 7, and the outer mold mounting opening 701 is tightly sleeved on the injection outer mold 8. An outer mold demolding push hole 801 is horizontally penetrated through the injection outer mold 8, and the right end of the outer mold demolding push hole 801 is a frustum-shaped end groove. The injection outer mold 8 is fixedly installed through the bolt connection between the outer mold positioning seat 7 and the outer mold mounting frame 6.

[0024] In an embodiment of the present disclosure, four outer mold push plate guide rods 901 are fixedly connected to the right surface of the outer mold demolding push plate 9, and the outer mold push plate guide rods 901 penetrate and are slidably connected to the ejector pin guide holes 601 and the outer mold positioning seat 7 to play a guiding role.

[0025] At the center of the right surface of the outer mold demolding push plate 9, a separating push rod 902 is vertically welded. At the right end of the separating push rod 902, a push rod limit end 903 is fixedly connected. A push rod top spring 904 is sleeved on the separating push rod 902. The left end of the push rod top spring 904 is fixedly connected to the right surface of the outer mold demolding push plate 9. An elastic top ring 905 with an annular structure is slidably connected to the outer mold push rod guide 901. The left end face of the elastic top ring 905 is fixedly connected to the right end of the push rod top spring 904. Two ejector post mounting grooves 906 are formed on the outer surface of the outer mold demolding push plate 9. The axis of the ejector post mounting groove 906 is perpendicular to the axis of the elastic top ring 905; the push rod limit end 903 is always located inside the internal space of the ejector post cavity 1002. The push rod limit end 903 is limited by the outer limit flange 1004, so that the separating push rod 902 cannot completely disengage from the demolding ejector post 10. Under the action of the push rod top spring 904, a rightward thrust is continuously applied to the elastic top ring 905.

[0026] Embodiment 2, on the basis of Embodiment 1, a conical structure ejector post end block 1001 is machined at the right end of the demolding ejector post 10. An ejector post cavity 1002 is formed inside the left end of the demolding ejector post 10. An inner convex ring 1003 is provided on the inner wall of the ejector post cavity 1002. The cross section of the inner convex ring 1003 is in a triangular structure. An outer limit flange 1004 is machined at the left edge of the inner wall of the ejector post cavity 1002. The demolding ejector post 10 is slidably connected in the second guiding socket 602 to play a guiding role; an elastic ejector post 907 is slidably connected inside the ejector post mounting groove 906. A ejector post spring 908 is sleeved on the elastic ejector post 907. Both ends of the ejector post spring 908 are respectively fixedly connected to the outer end face of the ejector post mounting groove 906 and the inner end of the elastic ejector post 907. The outer end of the elastic ejector post 907 is machined with a conical structure ejector post cone head 909; when performing the separation work of the injection molded outer mold 8 and the product, control the demolding push cylinder 11 to act. The outer mold demolding push plate 9 is pushed to the right by the demolding push cylinder 11, so that the separating push rod 902 is pushed to the right and enters the inside of the ejector post cavity 1002 and compresses the push rod top spring 904. Under the action of the push rod top spring 904, the elastic top ring 905 is pushed to move rightward, so that the ejector post cone head 909 contacts the inner convex ring 1003 to temporarily limit the elastic top ring 905. When the push rod top spring 904 continues to be compressed, the pushing force applied to the elastic top ring 905 gradually increases. Under the tight contact between the ejector post cone head 909 and the inner convex ring 1003, a downward pushing force is applied to the elastic ejector post 907, so that the elastic ejector post 907 contracts toward the inside of the ejector post mounting groove 906. After the elastic top ring 905 loses its limit, it quickly moves to the right under the action of the push rod top spring 904, and the ejector post cone head 909 collides with the adjacent inner convex ring 1003 on the right, generating a knock on the demolding ejector post 10 and transmitting the knock to the product, so that the product can be more easily demolded after being vibrated.

[0027] Working principle of this embodiment: First, after injection molding is completed, the demolding propulsion mechanism of the injection molding machine 1 is controlled to act. The outer mold mounting frame 6 moves leftward under the pulling action of the built-in demolding propulsion mechanism of the injection molding machine 1, separating the injection outer mold 8 from the injection inner mold 3 and maintaining a certain distance. Through the pushing action of the inner mold demolding spring 404 on the inner mold demolding push plate 5, the inner mold demolding push plate 5 pushes the product away from the injection inner mold 3 and adheres to the inner surface of the injection outer mold 8, completing the separation of the injection inner mold 3 from the plastic product. When separating the injection outer mold 8 from the product, the demolding push cylinder 11 is controlled to act. The demolding push cylinder 11 pushes the outer mold demolding push plate 9 to the right, causing the push rod 902 to push to the right and enter the inside of the ejector pin cavity 1002 during separation and compress the push rod top spring 904. Under the action of the push rod top spring 904, the elastic top ring 905 is pushed to move rightward, making the ejector pin cone head 909 contact the inner convex ring 1003, temporarily limiting the elastic top ring 905. As the push rod top spring 904 continues to be compressed, the pushing force applied to the elastic top ring 905 gradually increases. Under the close contact between the ejector pin cone head 909 and the inner convex ring 1003, a downward pushing force is applied to the elastic ejector pin 907, causing the elastic ejector pin 907 to contract into the ejector pin mounting groove 906. After the elastic top ring 905 loses its limit, it quickly moves rightward under the action of the push rod top spring 904, and the ejector pin cone head 909 collides with the adjacent inner convex ring 1003 on the right, generating a knock on the demolding ejector pin 10 and transmitting the knock to the product. Through the cooperation of multiple inner convex rings 1003 and the elastic ejector pin 907, the uniform advancing action of the push rod 902 during separation is converted into the synchronous progress of continuous advancing and knocking actions. After the product is vibrated, the adhesive layer between the surface layer of the product and the inner wall surface of the injection outer mold 8 is separated, and the demolding work is completed under the rightward pushing action of the demolding ejector pin 10.

[0028] In this article, the following points need to be noted: 1. The attached drawings of the embodiments of this disclosure only relate to the structures involved in the embodiments of this disclosure. Other structures can refer to the general design.

[0029] 2. Without conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] The above is only the specific implementation manner of this disclosure, but the protection scope of this disclosure is not limited thereto. Any person skilled in the art within the technical scope disclosed by this disclosure can easily think of changes or substitutions, which should all be covered within the protection scope of this disclosure. Therefore, the protection scope of this disclosure should be subject to the protection scope of the claims.

Claims

1. An injection mold facilitating demolding, comprising: The injection molding inner mold (3) and the injection molding outer mold (8). The injection molding inner mold (3) is fixedly installed on the left side of the inner mold mounting frame (2) through the inner mold positioning seat (4), and the inner mold mounting frame (2) is fixedly installed on the injection molding machine (1). The injection molding outer mold (8) is fixedly installed on the right side of the outer mold mounting frame (6) through the outer mold positioning seat (7), and the outer mold mounting frame (6) is movably connected to the injection molding machine (1). It is characterized in that the outer mold mounting frame (6) is connected to the demolding propulsion mechanism inside the injection molding machine (1). The left end face of the outer mold mounting frame (6) is fixedly connected with a demolding push cylinder (11) through bolts. The push cylinder of the demolding push cylinder (11) slidably penetrates through the outer mold mounting frame (6). The right end of the push rod of the demolding push cylinder (11) is fixedly connected with an outer mold demolding push plate (9). The outer mold demolding push plate (9) is slidably connected inside the outer mold mounting frame (6). A demolding ejector pin (10) is slidably connected inside both the outer mold mounting frame (6) and the injection molding outer mold (8). The left side of the inner mold positioning seat (4) is movably connected with an inner mold demolding push plate (5).

2. The injection molding mold facilitating demolding according to claim 1, characterized in that a first guiding jack hole (401) is formed on the inner mold positioning seat (4). An inner mold mounting opening (402) is formed through the center of the inner mold positioning seat (4). The inner mold mounting opening (402) is closely sleeved on the injection molding inner mold (3). An inner mold top spring mounting opening (403) is formed below the left surface of the inner mold positioning seat (4). An inner mold demolding top spring (404) is fixedly connected inside the inner mold top spring mounting opening (403).

3. The injection molding mold facilitating demolding according to claim 2, characterized in that four inner mold push plate guide rods (501) are fixedly connected to the right surface of the inner mold demolding push plate (5). The inner mold push plate guide rods (501) are slidably connected inside the first guiding jack hole (401). A top spring socket (502) is formed on the lower side of the right surface of the inner mold demolding push plate (5). The left end of the inner mold demolding top spring (404) is fixedly connected to the inner surface of the top spring socket (502).

4. The injection molding mold facilitating demolding according to claim 1, characterized in that four circular hole-structured ejector pin guide holes (601) are formed through the right frame plate of the outer mold mounting frame (6). A second guiding socket (602) with a circular hole structure is horizontally formed through the center of the right frame plate of the outer mold mounting frame (6).

5. The injection molding mold facilitating demolding according to claim 1, characterized in that an outer mold mounting opening (701) is formed through the center of the outer mold positioning seat (7). The outer mold mounting opening (701) is closely sleeved on the injection molding outer mold (8).

6. The injection molding mold facilitating demolding according to claim 1, characterized in that an outer mold demolding push hole (801) is formed horizontally through the injection molding outer mold (8). The right end of the outer mold demolding push hole (801) is a frustum-shaped end groove.

7. The injection molding mold facilitating demolding according to claim 4, characterized in that Four ejector guide rods (901) of the outer mold demolding ejector plate (9) are fixedly connected to the right surface of the outer mold demolding ejector plate (9). The ejector guide rods (901) of the outer mold penetrate and are slidably connected to the ejector pin guide holes (601) and the outer mold positioning seat (7). A separating push rod (902) is perpendicularly welded to the center of the right surface of the outer mold demolding ejector plate (9). A push rod limit end (903) is fixedly connected to the right end of the separating push rod (902).

8. The injection mold for facilitating demolding according to claim 7, wherein A push rod top spring (904) is sleeved on the separating push rod (902). The left end of the push rod top spring (904) is fixedly connected to the right surface of the outer mold demolding ejector plate (9). An elastic top ring (905) with an annular structure is slidably connected to the ejector guide rod (901) of the outer mold. The left end face of the elastic top ring (905) is fixedly connected to the right end of the push rod top spring (904). Two ejector pin installation grooves (906) are formed on the outer surface of the outer mold demolding ejector plate (9). The axis of the ejector pin installation groove (906) is perpendicular to the axis of the elastic top ring (905).

9. The injection mold for facilitating demolding according to claim 8, wherein An elastic ejector pin (907) is slidably connected to the inside of the ejector pin installation groove (906). A ejector pin spring (908) is sleeved on the elastic ejector pin (907). The two ends of the ejector pin spring (908) are respectively fixedly connected to the outer end face of the ejector pin installation groove (906) and the inner end of the elastic ejector pin (907). The outer end of the elastic ejector pin (907) is processed with a ejector pin cone head (909) with a conical structure.

10. The injection mold for facilitating demolding according to claim 1, wherein The right end of the demolding ejector pin (10) is processed with a ejector pin end block (1001) with a frustum structure. A ejector pin inner cavity (1002) is formed inside the left end of the demolding ejector pin (10). An inner convex ring (1003) is arranged on the inner wall of the ejector pin inner cavity (1002). The cross section of the inner convex ring (1003) is in a triangular structure. An outer limit flange (1004) is processed at the left edge of the inner wall of the ejector pin inner cavity (1002).

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