A large inclined ejection structure of injection mold

Abstract

The application relates to a large-inclination-ejector horizontal-side-extraction structure of an injection mold, which comprises a lower mold body, the lower mold body comprises a movable mold plate, two mold feet, a lower fixed plate and two top plates, the two top plates are slidably connected between the movable mold plate and the lower fixed plate, an oil cylinder for driving the two top plates to move is arranged on the movable mold plate, an inclined ejector block for forming a matching part is slidably connected to the movable mold plate, an inclined ejector seat is arranged on the top plate, an inclined ejector rod is arranged on the inclined ejector seat and connected with the inclined ejector seat, a first forming block is slidably connected to the inclined ejector block, the first forming block is used for forming a third matching edge in cooperation with the inclined ejector block, an inclined groove is arranged on the movable mold plate, a sliding block is arranged on the first forming block and slidably connected in the inclined groove. The application solves the problem of reverse buckling of a bumper body during demolding to ensure smooth demolding of the bumper body.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of molds, in particular to a large inclined ejector horizontal side extraction structure of an injection mold. BACKGROUND

[0002] A rear bumper of a vehicle, as shown in Figure 1 and Figure 2 includes a bumper body 9, and the two ends of the bumper body 9 are provided with a matching part 91, and the matching part 91 is provided with a first matching edge 92, a second matching edge 93 and a third matching edge 94, and the second matching edge 93 is provided with a plurality of assembly holes 95.

[0003] The third matching edge 94 is formed on the mold of the bumper body 9, and the third matching edge 94 forms an undercut structure with the mold, and when the bumper body 9 is demolded, the third matching edge 94 is easy to be damaged and deformed, so it is necessary to cancel the undercut structure between the third matching edge 94 and the mold before the bumper body 9 is demolded, to prevent the third matching edge 94 from being damaged when the bumper body 9 is demolded. SUMMARY

[0004] The present application provides a large inclined ejector horizontal side extraction structure of an injection mold, which solves the problem of undercut when the bumper body is demolded.

[0005] The large inclined ejector horizontal side extraction structure of the injection mold provided by the present application adopts the following technical scheme:

[0006] A large inclined ejector horizontal side extraction structure of an injection mold, comprising a lower mold body, the lower mold body comprising a movable mold plate, two mold feet, a lower fixed plate, and two top plates, the two top plates being slidably connected between the movable mold plate and the lower fixed plate, the movable mold plate being provided with an oil cylinder for driving the two top plates to move, the movable mold plate being slidably connected with an inclined ejector block for forming a matching part, the top plate being provided with an inclined ejector seat, the inclined ejector seat being provided with an inclined ejector rod, the inclined ejector rod extending into the movable mold plate and being connected with the inclined ejector seat; the inclined ejector block being slidably connected with a first forming block, the first forming block being used for forming a third matching edge in cooperation with the inclined ejector block; the movable mold plate being provided with an inclined slot, the first forming block being provided with a sliding block, the sliding block being slidably connected in the inclined slot, and when the inclined ejector block slides, the sliding block and the inclined slot cooperate to convert the sliding force of the inclined ejector block into the sliding force of the first forming block to make the first forming block move away from the inclined ejector block.

[0007] By adopting the technical scheme, before the bumper body is demolded, the oil cylinder is started to make the two top blocks move close to the movable die plate. The two top blocks moving close to the movable die plate will drive the inclined top block to slide away from the movable die plate through the inclined top rod, so that the inclined top block will lift the matching part. When the inclined top block moves, the first forming block will slide away from the second matching edge which has been formed under the cooperation of the sliding block and the sliding groove, so as to release the reverse structure of the A area of the second matching edge and the first forming block, so that the second matching edge will not be damaged when the subsequent bumper body is completely demolded.

[0008] Preferably, the first forming block is provided with a limiting groove, and the inclined top block is provided with a limiting block which extends into the limiting groove.

[0009] By adopting the technical scheme, the sliding distance of the first forming block is limited to prevent the sliding block from sliding out of the sliding groove.

[0010] Preferably, the inclined top block is provided with a mounting cavity, the first forming block is located in the mounting cavity, and a T-shaped block is detachably connected in the mounting cavity. A T-shaped groove is formed in the first forming block, and the T-shaped block and the T-shaped groove are in sliding cooperation.

[0011] By adopting the technical scheme, the machining of the inclined top block and other components is facilitated.

[0012] Preferably, the inclined top block is slidably connected with a second forming block and a third forming block. The second forming block is used to form a second matching edge in cooperation with the inclined top block, and the third forming block is used to form a first matching edge in cooperation with the inclined top block. A first driving rod is arranged on the second forming block, and a second driving rod is arranged on the third forming block. The first driving rod and the second driving rod are slidably connected to the inclined top block. A first driving part is arranged on the movable die plate, and the first driving part is used to simultaneously drive the first driving rod and the second driving rod to slide so that the second forming block and the third forming block move away from the inclined top block.

[0013] By adopting the technical scheme, when the inclined top block slides away from the movable die plate, the first driving part drives the first driving rod and the second driving rod to move, so that the second forming block and the third forming block move away from the inclined top block. When the second forming block moves away from the inclined top block, the reverse structure of the plurality of assembly holes in the second matching edge is released, facilitating the demolding of the second matching edge. When the third forming block moves away from the second forming block, the reverse structure of the first matching edge is released, facilitating the demolding of the first matching edge.

[0014] Preferably, the first driving part comprises a guide block arranged on the movable die plate, an inclined surface arranged on the guide block for abutting the inclined ejector block, two guide rails arranged on the guide block, the distance from the guide rails to the inclined surface gradually decreases from one end of the guide rails close to the top plate to the other end of the guide rails away from the top plate, the first driving rod extends out of the inclined ejector block at one end away from the second forming block and is slidably connected to one of the guide rails, and the second driving rod extends out of the inclined ejector block at one end away from the third forming block and is slidably connected to the other guide rail.

[0015] By adopting the above technical scheme, when the inclined ejector block moves away from the movable die plate, the first driving rod and the second driving rod move together under the guidance of the two guide rails, and the movement force of the inclined ejector block is converted into the movement force of the first driving rod and the second driving rod, so that the first driving rod and the second driving rod gradually move close to the inclined ejector block at one end of the two guide rails, and the first driving rod and the second driving rod drive the second forming block and the third forming block to move.

[0016] Preferably, the second forming block is slidably connected with a fourth forming block for forming a second matching edge, a plurality of columns are arranged on the fourth forming block, and the plurality of columns are used for forming a plurality of assembly holes; a second driving part is arranged on the inclined ejector block, and the second driving part is used for driving the fourth forming block to slide so that the plurality of columns are separated from the second matching edge.

[0017] By adopting the above technical scheme, when the second forming block moves away from the inclined ejector block, the second driving part drives the fourth forming block to slide so that the plurality of columns are separated from the second matching edge, thereby releasing the back-off structure of the plurality of columns and the plurality of assembly holes, and facilitating demolding of the second matching edge. Compared with the demolding angle caused by the strong stripping of the second forming block, the fourth forming block can make the demolding angle smaller when the column is separated from the assembly hole, so that the column has a backward movement relative to the assembly hole when it is separated from the assembly hole, instead of being directly separated from the assembly hole by external force, so that the column is less likely to be deformed when it is separated from the assembly hole.

[0018] Preferably, the second driving part comprises an inclined rod arranged on the inclined ejector block, an inclined hole is arranged on the fourth forming block, and the inclined rod is inserted into the inclined hole; when the second forming block moves away from the inclined ejector block, the inclined rod drives the fourth forming block to move away from the second matching edge.

[0019] By adopting the above technical scheme, when the second forming block moves away from the inclined ejector block, the inclined rod drives the fourth forming block to move away from the second matching edge, and when the second forming block moves close to the inclined ejector block, the inclined rod drives the fourth forming block to move back to the original position, thereby ensuring the injection molding of the second matching edge and the plurality of assembly holes.

[0020] The technical effects of the present application mainly embody in the following aspects:

[0021] 1. The first demoulding of the bumper body is completed by the movement of the inclined jacking block.

[0022] 2. The power of the inclined jacking block is converted into the power of the first forming block by the cooperation of the sliding block and the sliding groove, so that the first forming block can slide away from the second assembly edge which has been formed before the bumper body is demoulded.

[0023] 3. The power of the second forming block is converted into the power of the fourth forming block by the cooperation of the inclined rod and the inclined hole. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the automobile rear bumper.

[0025] Figure 2 is a partial enlarged view of A in Figure 1

[0026] Figure 3 is a structural schematic diagram of the lower mould body.

[0027] Figure 4 is a partial enlarged view of C in Figure 3

[0028] Figure 5 Figure 3

[0029] Figure 6 is a structural schematic diagram of the inclined jacking block.

[0030] Figure 7 is a structural schematic diagram of the first forming block.

[0031] Figure 8 is a structural schematic diagram of the lower mould body when the inclined jacking block is removed.

[0032] Figure 9 Figure 8 is a partial enlarged view of D in

[0033] Figure 10 is a structural schematic diagram of the inclined jacking block and other components.

[0034] Figure 11 is a structural sectional view of the inclined jacking block after being partially sectioned. Figure 10

[0035] Figure 12 is a structural schematic diagram of the inclined jacking block and other components from another angle. Figure 10

[0036] Figure 13 is a structural schematic diagram of the second forming block after being partially sectioned. Figure 10

[0037] ​​​​​​​Figure 14 is Figure 10 the structure schematic diagram of the fourth forming block after partial section in the embodiment.

[0038] Figure 15 is Figure 14 the local enlarged view of E in the embodiment.

[0039] Figure 16 is Figure 14 the structure schematic diagram of the second forming block and the fourth forming block in the embodiment.

[0040] The figure mark: 1, the lower mould body; 11, the movable die plate; 111, the chute; 12, the mould foot; 13, the lower fixed plate; 14, the top plate; 15, the oil cylinder; 16, the inclined top seat; 17, the inclined top rod; 2, the inclined top block; 21, the installation cavity; 22, the T-shaped block; 23, the limiting block; 3, the first forming block; 31, the sliding block; 32, the limiting slot; 33, the T-shaped slot; 4, the second forming block; 41, the first driving rod; 5, the third forming block; 51, the second driving rod; 6, the first driving part; 61, the guide block; 62, the inclined surface; 63, the guide rail; 7, the fourth forming block; 71, the column body; 72, the inclined hole; 8, the second driving part; 81, the inclined rod; 9, the bumper body; 91, the matching part; 92, the first matching edge; 93, the second matching edge; 94, the third matching edge; 95, the assembly hole. DETAILED DESCRIPTION

[0041] The application will be further described in detail below with reference to the drawings, so that the technical scheme of the present application is easier to understand and master.

[0042] Referring to Figure 3 , the injection mold large inclined top transverse side extraction structure of the embodiment includes a lower mould body 1, which includes a movable die plate 11, a plurality of mould feet 12, a lower fixed plate 13 and two top plates 14. The two top plates 14 are slidably connected between the movable die plate 11 and the lower fixed plate 13 along the opening direction of the mold. Four oil cylinders 15 are fixed on the movable die plate 11, and the output shafts of the four oil cylinders 15 are fixedly connected with the top plates 14 close to the lower fixed plate 13. The extension and retraction of the output shafts of the oil cylinders 15 will drive the two top plates 14 to slide.

[0043] Referring to Figure 3 and Figure 4 , the movable die plate 11 is slidably connected with an inclined top block 2 on both sides for forming the matching part 91. Four inclined top seats 16 are fixed on the top plates 14 close to the movable die plate 11, and the four inclined top seats 16 are respectively arranged at both ends of the corresponding top plates 14. An inclined top rod 17 is fixed on the inclined top seat 16, and the inclined top rod 17 extends into the movable die plate 11 and is fixedly connected with the inclined top seat 16.

[0044] Referring to Figures 3-6, the inclined top block 2 is provided with a mounting cavity 21, and a T-shaped block 22 is detachably connected in the mounting cavity 21. The mounting cavity 21 is also provided with a first forming block 3, which is used for cooperating with the inclined top block 2 to form a third matching edge 94. The first forming block 3 is provided with a T-shaped groove 33, and the T-shaped block 22 is in sliding cooperation with the T-shaped groove 33, that is, the first forming block 3 is in sliding connection with the inclined top block 2 in a direction perpendicular to the opening direction of the mold. The first forming block 3 is provided with a limiting groove 32, and the inclined top block 2 is provided with a limiting block 23, which extends into the limiting groove 32. The sliding distance of the first forming block 3 is limited through the cooperation of the limiting block 23 and the limiting groove 32, so as to prevent the sliding block 31 from sliding out of the sliding groove.

[0045] With reference to Figure 3 , Figure 6 , Figure 8 and Figure 9 , the movable die plate 11 is provided with an inclined groove 111, and the first forming block 3 is fixedly provided with a sliding block 31, which is in sliding connection in the inclined groove 111. When the inclined top block 2 slides, the sliding block 31 cooperates with the inclined groove 111 to convert the sliding force of the inclined top block 2 into the sliding force of the first forming block 3, so as to move the first forming block 3 away from the inclined top block 2.

[0046] With reference to Figure 3 , Figure 5 , Figure 10 , the inclined top block 2 is in sliding connection with a second forming block 4 and a third forming block 5. The second forming block 4 is used for cooperating with the inclined top block 2 to form a second matching edge 93. The third forming block 5 is used for cooperating with the inclined top block 2 to form a first matching edge 92.

[0047] With reference to Figures 11-13 , the second forming block 4 is provided with a first driving rod 41, and the third forming block 5 is provided with a second driving rod 51. The first driving rod 41 and the second driving rod 51 are both in sliding connection with the inclined top block 2. The movable die plate 11 is provided with a first driving part 6, which is used for simultaneously driving the first driving rod 41 and the second driving rod 51 to slide, so that the second forming block 4 and the third forming block 5 move away from the inclined top block 2 synchronously.

[0048] With reference to Figure 8 , Figure 9 , Figures 11-13, the first driving part 6 includes a guide block 61 mounted on the movable die plate 11, an inclined surface 62 opened on the guide block 61 for abutting the inclined block 2, and two guide rails 63 integrally formed on the guide block 61. The distance from the guide rail 63 to the inclined surface 62 gradually decreases from the end of the guide rail 63 close to the top plate 14 to the end of the guide rail 63 away from the top plate 14. The first driving rod 41 extends out of the inclined block 2 away from the second forming block 4 and is slidingly connected to one of the guide rails 63, and the second driving rod 51 extends out of the inclined block 2 away from the third forming block 5 and is slidingly connected to the other guide rail 63.

[0049] With reference to Figures 14-16 , the second forming block 4 is slidingly connected with a fourth forming block 7 for forming a second matching edge 93, and the fourth forming block 7 cooperates with the inclined block 2 to form the second matching edge 93. The fourth forming block 7 is integrally formed with a plurality of columns 71 for forming a plurality of assembly holes 95.

[0050] With reference to Figures 14-16 , the inclined block 2 is provided with a second driving part 8 for driving the fourth forming block 7 to slide so that the plurality of columns 71 are separated from the second matching edge 93. The second driving part 8 includes an inclined rod 81 provided on the inclined block 2, and three inclined holes 72 are opened on the fourth forming block 7, and the inclined rod 81 is inserted into the inclined holes 72; when the second forming block 4 moves away from the inclined block 2, the inclined rod 81 drives the fourth forming block 7 to move away from the second matching edge 93.

[0051] The specific side extraction demolding action of the structure of the present application is as follows:

[0052] With reference to Figures 3-5 , after the bumper body 9 is formed on the movable die plate 11, the output shafts of the four oil cylinders 15 are retracted to move the two top plates 14 close to the movable die plate 11. The movement of the two top plates close to the movable die plate 11 will drive the inclined block 2 to slide away from the movable die plate 11 through the inclined rod 17, so that the inclined block 2 will lift the matching part 91. When the inclined block 2 moves, the first forming block 3 will slide away from the second matching edge 93 which has been formed under the cooperation of the sliding block 31 and the sliding groove, thereby releasing the reverse locking structure of the A area of the second matching edge 93 and the first forming block 3, so that the second matching edge 93 will not be damaged when the subsequent bumper body 9 is completely demolded.

[0053] With reference to Figures 8-13, the oblique top block 2 will move away from the movable mold plate 11, and the first driving rod 41 and the second driving rod 51 will move together, and the force of the movement of the oblique top block 2 will be converted into the force of the movement of the first driving rod 41 and the second driving rod 51 under the guidance of the two guide rails 63, so that the first driving rod 41 and the second driving rod 51 gradually move close to the oblique top block 2 at one end of the two guide rails 63, and the first driving rod 41 and the second driving rod 51 drive the second forming block 4 and the third forming block 5 to move away from the oblique top block 2. When the third forming block 5 moves away from the second forming block 4, the reverse structure of the first matching edge 92 is released, and the demolding of the first matching edge 92 is facilitated.

[0054] With reference to Figures 14-16 , the second forming block 4 moves away from the oblique top block 2, and the fourth forming block 7 moves away from the formed second matching edge 93, and under the guidance of the oblique rod 81 when the second forming block 4 moves away from the oblique top block 2, the oblique rod 81 drives the fourth forming block 7 to move away from the formed second matching edge 93, so that the plurality of columns 71 are separated from the second matching edge 93, and the reverse structure of the plurality of columns 71 and the plurality of assembly holes 95 is released, and the demolding of the second matching edge 93 is facilitated.

[0055] Through the above steps, the reverse structure between the first matching edge 92, the second matching edge 93, the third matching edge 94 and the oblique top block 2 is released, so that the bumper body 9 can be smoothly demolded, and the bumper body 9 is prevented from being pulled when demolding.

[0056] Of course, the above is only a typical example of the present application, and in addition to this, the present application can have other various specific embodiments, and any technical solution formed by equivalent replacement or equivalent transformation falls within the scope of the present application.

Claims

1. A large inclined ejector lateral ejection and side-pull structure for injection molds, comprising a lower mold body (1), wherein the lower mold body (1) includes a movable template (11), multiple mold feet (12), a lower fixed plate (13), and two top plates (14), wherein the two top plates (14) are slidably connected between the movable template (11) and the lower fixed plate (13), and the movable template (11) is provided with a hydraulic cylinder (15) for driving the movement of the two top plates (14), characterized in that: The moving template (11) is slidably connected to an inclined top block (2) for forming a mating part (91). The top plate (14) is provided with an inclined top seat (16). The inclined top seat (16) is provided with an inclined top rod (17). The inclined top rod (17) extends into the moving template (11) and is connected to the inclined top seat (16). The inclined top block (2) is slidably connected to a first forming block (3). The first forming block (3) is used to cooperate with the inclined top block (2) to form a third mating edge (94). The moving template (11) has an inclined groove (111). The first forming block (3) is provided with a slider (31). The slider (31) is slidably connected in the inclined groove (111). When the inclined top block (2) slides, the slider (31) cooperates with the inclined groove (111) to convert the sliding force of the inclined top block (2) into the sliding force of the first forming block (3) so that the first forming block (3) moves away from the inclined top block (2).

2. The injection mold large angled ejector transverse side-pull structure according to claim 1, characterized in that: The first forming block (3) is provided with a limiting groove (32), and the inclined top block (2) is provided with a limiting block (23), which extends into the limiting groove (32).

3. The injection mold large inclined ejector transverse side-pull structure according to claim 2, characterized in that: The inclined top block (2) is provided with an installation cavity (21), the first molding block (3) is located in the installation cavity (21), and a T-shaped block (22) is detachably connected in the installation cavity (21). A T-shaped groove (33) is provided on the first molding block (3), and the T-shaped block (22) and the T-shaped groove (33) slide and cooperate.

4. The injection mold large inclined ejector transverse side-pull structure according to claim 1, characterized in that: The inclined top block (2) is slidably connected to a second forming block (4) and a third forming block (5). The second forming block (4) is used to cooperate with the inclined top block (2) to form a second mating edge (93). The third forming block (5) is used to cooperate with the inclined top block (2) to form a first mating edge (92). The second forming block (4) is provided with a first driving rod (41). The third forming block (5) is provided with a second driving rod (51). The first driving rod (41) and the second driving rod (51) are both slidably connected to the inclined top block (2). The moving template (11) is provided with a first driving part (6). The first driving part (6) is used to simultaneously drive the first driving rod (41) and the second driving rod (51) to slide so that the second forming block (4) and the third forming block (5) move synchronously away from the inclined top block (2).

5. The injection mold large inclined ejector transverse side-pull structure according to claim 4, characterized in that: The first driving part (6) includes a guide block (61) on the moving template (11), an inclined surface (62) on the guide block (61) for fitting the inclined top block (2), and two guide rails (63) on the guide block (61). The distance between the guide rail (63) and the inclined surface (62) gradually decreases from the end of the guide rail (63) near the top plate (14) to the end of the guide rail (63) away from the top plate (14). The end of the first driving rod (41) away from the second forming block (4) extends out of the inclined top block (2) and slides on one of the guide rails (63). The end of the second driving rod (51) away from the third forming block (5) extends out of the inclined top block (2) and slides on the other guide rail (63).

6. The injection mold large inclined ejector transverse side-pull structure according to claim 5, characterized in that: The second molding block (4) is slidably connected to a fourth molding block (7) for molding the second mating edge (93). The fourth molding block (7) is provided with multiple pillars (71), which are used to mold multiple assembly holes (95). The inclined top block (2) is provided with a second driving part (8), which is used to drive the fourth molding block (7) to slide away when the second molding block (4) moves away from the inclined top block (2) so that the multiple pillars (71) move away from the second mating edge (93).

7. The injection mold large inclined ejector transverse side-pull structure according to claim 6, characterized in that: The second driving part (8) includes a slant rod (81) provided on the slant top block (2), and the fourth forming block (7) has a slant hole (72) and the slant rod (81) is inserted into the slant hole (72); when the second forming block (4) moves away from the slant top block (2), the slant rod (81) drives the fourth forming block (7) to move away from the second mating edge (93).

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