Injection mold with novel glue feeding mode

Abstract

The utility model relates to the technical field of injection molds, and discloses an injection mold with a novel glue feeding mode, which comprises a thin-wall part and an injection mold, the thin-wall part comprises a plate body which is integrally formed through injection molding, a protruding block is formed at one end of the plate body, and an assembling block is integrally formed on the protruding block. The injection mold comprises a lower mold frame and an upper mold frame which are oppositely arranged in an opening and closing mode, an ejector pin mechanism is installed at the bottom of the lower mold frame, a lower mold core is arranged at the top of the lower mold frame, and a first side pressing piece and a second side pressing piece are installed at the positions, on the two sides of the lower mold core, of the top of the lower mold frame correspondingly. According to the injection mold with the novel glue feeding mode, the problems that in the prior art, the position of an injection molding opening needs to be considered based on the liquidity of a thin-wall part and is generally arranged in the middle of the thin-wall part, so that injection molding marks are inevitably formed on the thin-wall part in the injection molding process, subsequent machining and polishing are needed, and the tedious degree of thin-wall part production is increased are solved.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold with a novel injection method. Background Technology

[0002] Injection molding is a method of shaping industrial products. The resulting shape is often the final product, and no further processing is required before it is installed or used as a final product. Therefore, injection molds are generally used to form thin-walled parts such as car B-pillars in one step.

[0003] Thin-walled components such as automotive B-pillars are generally used as decorative panels. During injection molding, special attention needs to be paid to their aesthetic appearance. In existing technologies, the hot runner of the injection mold is usually directly built into the upper mold base. After the upper and lower mold bases are closed, injection molding is performed directly on the top of the upper mold base. The injection port position needs to be considered based on the flowability of the thin-walled component, and it is generally located in the middle of the thin-walled component. Therefore, it is inevitable that injection marks will be formed on the thin-walled component during the injection process, requiring subsequent processing and polishing, which increases the complexity of thin-walled component production. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a novel injection mold with a new injection method, solving the problems mentioned in the background.

[0005] This utility model provides the following technical solution: a novel injection mold with a glue injection method, comprising: a thin-walled part and an injection mold;

[0006] The thin-walled component includes a plate body integrally formed by injection molding, one end of the plate body is formed with a protrusion, and a mounting block is integrally formed on the protrusion;

[0007] The injection mold includes a lower mold base and an upper mold base with a relatively open and close arrangement. An ejector pin mechanism is installed at the bottom of the lower mold base, and a lower mold core is provided at the top of the lower mold base. A first side pressure member and a second side pressure member are respectively installed on both sides of the lower mold core at the top of the lower mold base. An external pipe is provided inside the first side pressure member and the second side pressure member.

[0008] The lower mold base has a built-in hot runner, and the side of the hot runner is connected to a first injection port and a second injection port respectively. The interior of the hot runner is provided with multiple sets of sprues, all of which are located at the bottom of the lower mold core.

[0009] Preferably, the upper mold frame includes a frame body, the bottom of the frame body is provided with an upper mold core, and a first pressing member and a second pressing member are respectively installed on both sides of the upper mold core at the bottom of the frame body, the positions of the first pressing member and the second pressing member correspond to the positions of the first side pressing member and the second side pressing member, respectively.

[0010] Preferably, the frame is provided with positioning posts at the four corners of the bottom, and the lower mold frame is provided with positioning holes at the four corners of the top. The positioning posts are inserted into the inner walls of the positioning holes, and the frame is equipped with a cooling pipe mechanism.

[0011] Preferably, a positioning buckle is installed on the lower mold frame. The positioning buckle is located at the end of the second side pressure member. The positioning buckle has a groove. One end of the outer pipe disposed inside the second side pressure member passes through the groove on the positioning buckle and connects to the outside of the lower mold frame.

[0012] Preferably, a diagonal pressure bar is installed at the bottom of the upper mold frame, and the diagonal pressure bar slides through the second side pressure member.

[0013] Preferably, a stop post is provided at the top of the lower mold frame along the center line, and the side of the second side pressure member overlaps with the stop post.

[0014] Preferably, the hot runner is provided with a heating pipe surrounding the sprue, and one end of the outer pipe located inside the lower mold frame is connected to the heating pipe.

[0015] Preferably, a junction box is connected to the hot runner, and a socket is installed on the junction box.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The injection mold of this new injection method is based on the fact that the mold core of the non-smooth side of the thin-walled part is generally located on the lower mold base. Therefore, by setting the hot runner for injection molding in the lower mold base, the injection mark of the thin-walled part is left on the side used for installation, thereby ensuring that the smooth side of the thin-walled part is formed in one go, without injection defects, avoiding subsequent processing and polishing, and improving the convenience of thin-walled part production.

[0018] 2. The injection mold of this new injection method sets the cooling pipe mechanism in the upper mold frame, so that after the thin-walled part is injection molded, the upper mold frame is used to cool the smooth side of the thin-walled part, so that the thin-walled part can be quickly cooled and demolded. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the demolding structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the thin-walled component structure of this utility model;

[0022] Figure 4 This is a bottom view of the upper mold frame structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the lower mold frame structure of this utility model;

[0024] Figure 6 This utility model Figure 5 Enlarged structural diagram at point A in the middle;

[0025] Figure 7 This is a schematic diagram of the hot runner structure of this utility model.

[0026] In the diagram: 1. Thin-walled component; 101. Plate; 102. Protrusion; 103. Mounting block; 2. Lower mold base; 3. Upper mold base; 31. Frame; 32. Positioning pin; 33. Upper mold core; 34. First pressing component; 35. Second pressing component; 36. Cooling pipe mechanism; 4. First side pressing component; 5. External pipe; 6. Lower mold core; 7. Ejector mechanism; 8. Second side pressing component; 9. First injection port; 10. Positioning hole; 11. Inclined pressure bar; 12. Positioning buckle; 13. Support pin; 14. Hot runner; 15. Second injection port; 16. Sprue; 17. Heating pipe; 18. Junction box; 19. Socket. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figure 1-7 A novel injection mold with a unique injection method includes: a thin-walled part 1 and an injection mold;

[0029] The thin-walled part 1 includes a plate 101 integrally formed by injection molding, a protrusion 102 is formed at one end of the plate 101, and a mounting block 103 is integrally formed on the protrusion 102.

[0030] The injection mold includes a lower mold base 2 and an upper mold base 3 with a relatively open and close arrangement. The bottom of the lower mold base 2 is equipped with an ejector pin mechanism 7, and the top of the lower mold base 2 is equipped with a lower mold core 6. The top of the lower mold base 2 is equipped with a first side pressure member 4 and a second side pressure member 8 on both sides of the lower mold core 6. The first side pressure member 4 and the second side pressure member 8 are both equipped with an outer tube 5 inside.

[0031] The lower mold base 2 has a built-in hot runner 14. The side of the hot runner 14 is connected to the first injection port 9 and the second injection port 15 respectively. The hot runner 14 is equipped with multiple sets of sprues 16, which are all located at the bottom of the lower mold core 6.

[0032] The upper mold frame 3 includes a frame 31, with an upper mold core 33 at the bottom of the frame 31. A first pressing member 34 and a second pressing member 35 are respectively installed on the bottom of the frame 31 on both sides of the upper mold core 33. The positions of the first pressing member 34 and the second pressing member 35 correspond to the positions of the first side pressing member 4 and the second side pressing member 8, respectively. When the lower mold frame 2 and the upper mold frame 3 are closed, the first pressing member 34 and the second pressing member 35 located on the upper mold frame 3 directly press and cover the first side pressing member 4 and the second side pressing member 8, so that the closing part quickly forms an injection cavity, which facilitates subsequent injection molding.

[0033] The frame 31 has positioning posts 32 at the four corners of the bottom, and the lower mold frame 2 has positioning holes 10 at the four corners of the top. The positioning posts 32 are inserted into the inner wall of the positioning holes 10. The frame 31 has a built-in cooling pipe mechanism 36. By setting the cooling pipe mechanism 36 in the upper mold frame 3, the upper mold frame 3 is used to cool the smooth side of the thin-walled part 1 after injection molding.

[0034] The lower mold frame 2 is equipped with a positioning buckle 12, which is located at the end of the second side pressure member 8. The positioning buckle 12 has a groove, and one end of the outer pipe 5, which is located inside the second side pressure member 8, passes through the groove on the positioning buckle 12 and connects to the outside of the lower mold frame 2. By setting the positioning buckle 12, the outer pipe 5 protruding from the second side pressure member 8 is limited, so as to avoid the position of the outer pipe 5 changing when the lower mold frame 2 and the upper mold frame 3 are closed, which would affect the closing.

[0035] The bottom of the upper mold frame 3 is equipped with a slanted pressure bar 11. The slanted pressure bar 11 slides through the second side pressure member 8. When the lower mold frame 2 and the upper mold frame 3 are closed, the slanted pressure bar 11 is inserted into the lower mold frame 2 as the upper mold frame 3 is pressed down. Then, by using its own inclination, it presses the second side pressure member 8 to move to the center line of the lower mold frame 2, thereby forming the injection cavity.

[0036] The lower mold base 2 has a stop post 13 at the top along the center line. The side of the second side pressure member 8 overlaps with the stop post 13. By setting the stop post 13, the sliding position of the second side pressure member 8 is restricted when it slides on the lower mold base 2, so as to prevent the second side pressure member 8 from crossing the center line of the lower mold base 2 and causing the injection cavity to deform.

[0037] The hot runner 14 is equipped with heating pipes 17 surrounding the sprue 16. One end of the outer pipe 5 located inside the lower mold base 2 is connected to the heating pipes 17. By setting heating pipes 17 around the sprue 16, the heating pipes 17 continuously heat the sprue 16 and the injection cavity during the process of the injection molding material entering the injection cavity through the sprue 16, so as to prevent the injection molding material from solidifying before the thin-walled part 1 is injection molded.

[0038] A junction box 18 is connected to the hot runner 14, and a socket 19 is installed on the junction box 18. By integrating the wiring involved in the hot runner 14 into the junction box 18, the structural wiring on the hot runner 14 can be directly connected to the external wiring through the socket 19 in the junction box 18.

[0039] The working principle is as follows: when a thin-walled part 1 needs to be injection molded, the lower mold base 2 and the upper mold base 3 are directly closed to form the injection cavity between the lower mold base 2 and the upper mold base 3. Then, all the external pipes 5 located outside the lower mold base 2 are connected, and the injection cavity is injected through the first injection port 9 and the second injection port 15. After the injection is completed, the structure inside the upper mold base 3 is used to cool the formed thin-walled part 1, and finally, it is demolded.

[0040] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel injection mold with a new type of injection method, characterized in that, include: Thin-walled parts (1) and injection molds; The thin-walled part (1) includes a plate (101) integrally formed by injection molding, with a protrusion (102) formed at one end of the plate (101), and a mounting block (103) integrally formed on the protrusion (102). The injection mold includes a lower mold base (2) and an upper mold base (3) with a relatively open and close arrangement. The bottom of the lower mold base (2) is equipped with an ejector pin mechanism (7), and the top of the lower mold base (2) is equipped with a lower mold core (6). The top of the lower mold base (2) is equipped with a first side pressure member (4) and a second side pressure member (8) on both sides of the lower mold core (6). The first side pressure member (4) and the second side pressure member (8) are both equipped with an outer tube (5). The lower mold base (2) has a built-in hot runner (14), and the side of the hot runner (14) is connected to the first injection port (9) and the second injection port (15). The hot runner (14) is provided with multiple sets of sprues (16), and the multiple sets of sprues (16) are all located at the bottom of the lower mold core (6).

2. The injection mold with a novel injection method according to claim 1, characterized in that, The upper mold frame (3) includes a frame body (31), and an upper mold core (33) is provided at the bottom of the frame body (31). A first pressing member (34) and a second pressing member (35) are respectively installed on both sides of the upper mold core (33) at the bottom of the frame body (31). The positions of the first pressing member (34) and the second pressing member (35) correspond to the positions of the first side pressing member (4) and the second side pressing member (8), respectively.

3. The injection mold with a novel injection method according to claim 2, characterized in that, The frame (31) is provided with positioning posts (32) at the four corners of the bottom, and the lower mold frame (2) is provided with positioning holes (10) at the four corners of the top. The positioning posts (32) are inserted into the inner wall of the positioning holes (10), and the frame (31) is provided with a cooling pipe mechanism (36).

4. The injection mold with a novel injection method according to claim 1, characterized in that, The lower mold frame (2) is equipped with a positioning buckle (12), which is located at the end of the second side pressure member (8). The positioning buckle (12) has a groove, and one end of the outer pipe (5) located inside the second side pressure member (8) passes through the groove on the positioning buckle (12) and connects to the outside of the lower mold frame (2).

5. The injection mold with a novel injection method according to claim 1, characterized in that, The bottom of the upper mold frame (3) is equipped with a diagonal pressure bar (11), which slides through the second side pressure member (8).

6. The injection mold with a novel injection method according to claim 1, characterized in that, The lower mold frame (2) has a stop post (13) at the top along the center line, and the side of the second side pressure member (8) overlaps with the stop post (13).

7. The injection mold with a novel injection method according to claim 1, characterized in that, The hot runner (14) is provided with a heating pipe (17) surrounding the gate (16), and one end of the outer pipe (5) located inside the lower mold frame (2) is connected to the heating pipe (17).

8. The injection mold with a novel injection method according to claim 1, characterized in that, A junction box (18) is connected to the hot runner (14), and a socket (19) is installed on the junction box (18).

Images