Transverse outlet and side-pulling structure of large pitched roof of injection mold

Abstract

The invention relates to an injection mold large inclined top transverse outlet side pulling structure which comprises a lower mold body, the lower mold body comprises a movable mold plate, two mold feet, a lower fixing plate and two top plates, the two top plates are connected between the movable mold plate and the lower fixing plate in a sliding mode, and an oil cylinder used for driving the two top plates to move is arranged on the movable mold plate. The movable mold plate is slidably connected with an inclined ejection block used for forming a matching part, the ejection plate is provided with an inclined ejection seat, the inclined ejection seat is provided with an inclined ejection rod, and the inclined ejection rod is connected with the inclined ejection seat; a first forming block is connected to the inclined ejector block in a sliding mode and used for being matched with the inclined ejector block to form a third matched edge. An inclined groove is formed in the movable mold plate, a sliding block is arranged on the first forming block, and the sliding block is connected into the inclined groove in a sliding mode. Smooth demolding of the bumper body is guaranteed by solving the problem of back-off during demolding of the bumper body.

Description

Technical Field

[0001] The invention relates to the field of molds, in particular to an injection mold with a large inclined top and a lateral side-drawing structure. Background Art

[0002] A rear bumper of a car Figure 1 and Figure 2 As shown, the bumper body 9 includes a mating portion 91 at both ends of the bumper body 9. The mating portion 91 is provided with a first mating edge 92, a second mating edge 93 and a third mating edge 94. The second mating edge 93 is provided with a plurality of assembly holes 95.

[0003] After the bumper body 9 is formed on the mold, the third mating edge 94 forms an undercut structure with the mold. The third mating edge 94 is easily torn and deformed when the bumper body 9 is demolded. Therefore, it is necessary to cancel the undercut structure between the third mating edge 94 and the mold before the bumper body 9 is demolded to prevent the third mating edge 94 from being torn when the bumper body 9 is demolded. Summary of the invention

[0004] The present application provides an injection mold with a large inclined top and a lateral side-drawing structure, which solves the problem of undercut when the bumper body is demoulded.

[0005] The present application provides an injection mold with a large inclined top and a lateral side extraction structure, which adopts the following technical solutions: The cam-shaped member is a vertically-spaced member which is adapted to move relative to the top plate of the mould, and the cam-shaped member is adapted to move relative to the top plate of the mould.

[0006] By adopting the above technical solution, before the bumper body is demolded, the oil cylinder is activated to move the two ejector blocks closer to the movable mold plate. When the two ejector blocks move closer to the movable mold plate, the ejector rod drives the inclined ejector block to slide away from the movable mold plate, so that the inclined ejector block lifts the mating part. When the inclined ejector block moves, the first forming block will slide away from the already formed second mating edge with the cooperation of the slider and the slide groove, thereby releasing the undercut structure between the A area of ​​the second mating edge and the first forming block, so that the second mating edge will not be strained when the bumper body is completely demolded later.

[0007] Preferably, a limiting groove is provided on the first forming block, and a limiting block is provided on the inclined top block, and the limiting block extends into the limiting groove.

[0008] By adopting the above technical solution, the sliding distance of the first forming block is limited to prevent the sliding block from sliding out of the sliding groove.

[0009] Preferably, the inclined top block is provided with a mounting cavity, the first forming block is located in the mounting cavity, a T-block is detachably connected in the mounting cavity, a T-slot is provided on the first forming block, and the T-block is slidably matched with the T-slot.

[0010] By adopting the above technical solution, the processing of components such as the inclined ejector block is facilitated.

[0011] Preferably, the inclined top block is slidably connected with a second molding block and a third molding block, the second molding block is used to cooperate with the inclined top block to form a second mating edge, and the third molding block is used to cooperate with the inclined top block to form a first mating edge; the second molding block is provided with a first driving rod, and the third molding block is provided with a second driving rod, the first driving rod and the second driving rod are both slidably connected to the inclined top block, and the movable template is provided with a first driving part, 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 molding block and the third molding block move synchronously away from the inclined top block.

[0012] By adopting the above technical solution, when the inclined ejector block slides away from the movable template, the first driving part drives the first driving rod and the second driving rod to move the second forming block and the third forming block away from the inclined ejector block. When the second forming block moves away from the inclined ejector block, the undercut structure with the multiple assembly holes in the second matching edge is released, which facilitates the demoulding of the second matching edge. When the third forming block moves away from the second forming block, the undercut structure with the first matching edge is released, which facilitates the demoulding of the first matching edge.

[0013] Preferably, the first driving part includes a guide block arranged on the movable template, an inclined surface arranged on the guide block for fitting the inclined lift block, and two guide rails arranged on the guide block, and the distance from the guide rail to the inclined surface gradually decreases from the end of the guide rail close to the top plate to the end of the guide rail away from the top plate, the end of the first driving rod away from the second forming block extends out of the inclined lift block and is slidably connected to one of the guide rails, and the end of the second driving rod away from the third forming block extends out of the inclined lift block and is slidably connected to the other guide rail.

[0014] By adopting the above technical solution, when the inclined lift block slides away from the movable template, it will move with the first drive rod and the second drive rod. In this process, under the guidance of the two guide rails, the movement force of the inclined lift block will be converted into the movement force of the first drive rod and the second drive rod, so that the first drive rod and the second drive rod slide at one end of the two guide rails and gradually move close to the inclined lift block, so that the first drive rod and the second drive rod drive the second forming block and the third forming block to move.

[0015] Preferably, the second forming block is slidably connected to a fourth forming block for forming a second mating edge, and the fourth forming block is provided with a plurality of columns, and the plurality of columns are used to form a plurality of assembly holes; the inclined top block is provided with a second driving part, and the second driving part is used to drive the fourth forming block to slide so that the plurality of columns are separated from the second mating edge.

[0016] By adopting the above technical solution, when the second forming block moves away from the inclined top block, the second driving unit drives the fourth forming block to slide so that the multiple columns are separated from the second matching edge, thereby releasing the undercut structure of the multiple columns and multiple assembly holes, and facilitating the demoulding of the second matching edge. Compared with the demoulding angle caused by the strong demoulding of the second forming block, the fourth forming block can make the demoulding angle of the column smaller when it is separated from the assembly hole, so that when the column is separated from the assembly hole, there is a retreating action relative to the assembly hole, rather than directly relying on external force to force the diameter to separate, so that when the column is separated from the assembly hole, it is less likely to pull and deform the assembly hole.

[0017] Preferably, the second driving part includes an inclined rod arranged on the inclined lift block, the fourth forming block is provided with an inclined hole, and the inclined rod is inserted into the inclined hole; when the second forming block moves away from the inclined lift block, the inclined rod drives the fourth forming block to move away from the second mating edge.

[0018] By adopting the above technical solution, when the second molding block moves away from the inclined top block, the inclined rod will drive the fourth molding block to move away from the second mating edge. When the second molding block moves close to the inclined top block, the inclined rod will drive the fourth molding block to move back to its original position, thereby ensuring the injection molding of the second mating edge and multiple assembly holes.

[0019] The technical effects of the present invention are mainly reflected in the following aspects: 1. The present invention completes the first demoulding of the bumper body through the movement of the inclined ejector block: 2. The present invention converts the power of the inclined top block into the power of the first forming block through the cooperation between the slider and the slide groove, so that the first forming block can slide away from the formed second assembly edge before the bumper body is demoulded; 3. The present invention converts the power of the second forming block into the power of the fourth forming block through the cooperation of the inclined rod and the inclined hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1It is a structural diagram of the rear bumper of a car.

[0021] Figure 2 yes Figure 1 A partial enlarged view of point A in the middle.

[0022] Figure 3 It is a structural schematic diagram of the lower mold body.

[0023] Figure 4 yes Figure 3 Partial cross-sectional view of the middle and lower mold bodies along line BB.

[0024] Figure 5 yes Figure 3 A partial enlarged view of point C in the middle.

[0025] Figure 6 It is a structural schematic diagram of the inclined top block.

[0026] Figure 7 It is a structural schematic diagram of the first forming block.

[0027] Figure 8 It is a schematic diagram of the structure when the inclined top block is removed from the lower mold body.

[0028] Fig. 9 Figure 8 A partial enlarged view of point D in the middle.

[0029] Fig.10 It is a schematic diagram of the structure of the inclined top block and other components.

[0030] Fig.11 yes Fig.10 Structural cross-section view of the middle inclined top block after partial sectioning.

[0031] Fig.12 yes Fig.10 A schematic diagram of the structure of the middle inclined top block and other components from another angle.

[0032] Fig.13 yes Fig.10 Schematic diagram of the structure of the second forming block after partial section.

[0033] Fig.14 yes Fig.10 Schematic diagram of the structure of the fourth forming block after partial section.

[0034] Fig.15 yes Fig.14 A partial enlarged view of point E in the middle.

[0035] Fig.16 yes Fig.14 Schematic diagram of the structure of the second forming block and the fourth forming block.

[0036] 1. The lower mold body; 11. The movable mold plate; 111. The inclined groove; 12. The mold 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 mounting cavity; 22. The T-block; 23. The limiting block; 3. The first molding block; 31. The slider; 32. The limiting groove; 33. The T-slot; 4. The second molding block; 41. The first driving rod; 5. The third molding 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 molding block; 71. The column; 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

[0037] The present invention is further described in detail below in conjunction with the accompanying drawings to make the technical solution of the present application easier to understand and grasp.

[0038] Reference Figure 3 The large inclined top lateral side extraction structure of the injection mold of the present embodiment comprises a lower mold body 1, which comprises a movable mold plate 11, a plurality of mold feet 12, a lower fixed plate 13, and two top plates 14. The two top plates 14 are connected between the movable mold plate 11 and the lower fixed plate 13 in a sliding manner along the mold opening direction of the mold. Four oil cylinders 15 are fixed on the movable mold plate 11. The output shafts of the four oil cylinders 15 are fixedly connected to the top plates 14 near the lower fixed plate 13. The expansion and contraction of the output shafts of the oil cylinders 15 will drive the two top plates 14 to slide.

[0039] Reference Figure 3 and Figure 4 Both sides of the movable platen 11 are slidably connected with inclined ejector blocks 2 for forming the mating portion 91. Four inclined ejector seats 16 are fixed on the top plate 14 close to the movable platen 11. The four inclined ejector seats 16 are respectively located at the two ends of the corresponding top plate 14. An inclined ejector rod 17 is fixed on the inclined ejector seat 16. The inclined ejector rod 17 extends into the movable platen 11 and is fixedly connected to the inclined ejector seat 16.

[0040] Reference Figure 3-Figure 6 , the inclined top block 2 is provided with an installation cavity 21, and a T-block 22 is detachably connected to the installation cavity 21. A first forming block 3 is also provided in the installation cavity 21, and the first forming block 3 is used to cooperate with the inclined top block 2 to form a third matching edge 94. A T-slot 33 is provided on the first forming block 3, and the T-block 22 and the T-slot 33 are slidably matched, that is, the first forming block 3 is slidably connected to the inclined top block 2 along a mold opening direction perpendicular to the mold. A limiting groove 32 is provided on the first forming block 3, and a limiting block 23 is provided on the inclined top block 2, and the limiting block 23 extends into the limiting groove 32. The sliding distance of the first forming block 3 is limited by the cooperation of the limiting block 23 and the limiting groove 32 to prevent the slider 31 from sliding out of the slide groove.

[0041] Reference Figure 3 , Figure 6 , Figure 8 and Fig. 9 A slanted groove 111 is provided on the movable template 11, and a slider 31 is fixed on the first forming block 3. The slider 31 is slidably connected in the slanted groove 111. When the inclined top block 2 slides, the sliding force of the inclined top block 2 is converted into the sliding force of the first forming block 3 through the cooperation between the slider 31 and the slanted groove 111, so that the first forming block 3 moves away from the inclined top block 2.

[0042] Reference Figure 3 , Figure 5 , Fig.10 The second forming block 4 and the third forming block 5 are slidably connected to the inclined top block 2. The second forming block 4 is used to cooperate with the inclined top block 2 to form the second matching edge 93. The third forming block 5 is used to cooperate with the inclined top block 2 to form the first matching edge 92.

[0043] Reference Figure 11-13 A first driving rod 41 is provided on the second molding block 4, and a second driving rod 51 is provided on the third molding block 5. The first driving rod 41 and the second driving rod 51 are both slidably connected to the inclined top block 2. A first driving part 6 is provided on the movable template 11. 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 molding block 4 and the third molding block 5 move synchronously away from the inclined top block 2.

[0044] Reference Figure 8 , Fig. 9 , Figure 11-13 The first driving part 6 includes a guide block 61 mounted on the movable plate 11, an inclined surface 62 provided on the guide block 61 for fitting the inclined ejector 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 end of the first driving rod 41 away from the second molding block 4 extends out of the inclined ejector block 2 and is slidably connected to one of the guide rails 63, and the end of the second driving rod 51 away from the third molding block 5 extends out of the inclined ejector block 2 and is slidably connected to the other guide rail 63.

[0045] Reference Figure 14-16 The second forming block 4 is slidably connected with a fourth forming block 7 for forming a second mating edge 93, and the fourth forming block 7 cooperates with the inclined top block 2 to form the second mating edge 93. The fourth forming block 7 is integrally formed with a plurality of columns 71, and the plurality of columns 71 are used to form a plurality of assembly holes 95.

[0046] Reference Figure 14-16The second driving part 8 is provided on the inclined lift block 2, and the second driving part 8 is used to drive 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 lift block 2, and three inclined holes 72 are provided 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 lift block 2, the inclined rod 81 drives the fourth forming block 7 to move away from the second matching edge 93.

[0047] The specific side-drawing demoulding action of the structure of this application is as follows: Reference Figure 3-Figure 5 , after the bumper body 9 is formed on the movable template 11. The output shafts of the four oil cylinders 15 retract to allow the two top plates 14 to move closer to the movable template 11. When the two top blocks move closer to the movable template 11, the inclined ejector rod 17 will drive the inclined ejector block 2 to slide away from the movable template 11, so that the inclined ejector block 2 lifts the matching part 91. When the inclined ejector block 2 moves, the first molding block 3 will slide away from the already formed second matching edge 93 with the cooperation of the slider 31 and the slide groove, thereby releasing the undercut structure between the A area of ​​the second matching edge 93 and the first molding block 3, so that the second matching edge 93 will not be strained when the bumper body 9 is completely demolded later.

[0048] Reference Figure 8-Figure 13 When the inclined ejector block 2 slides away from the movable platen 11, it will move with the first driving rod 41 and the second driving rod 51. In this process, under the guidance of the two guide rails 63, the moving force of the inclined ejector block 2 will be converted into the moving force of the first driving rod 41 and the second driving rod 51, so that the first driving rod 41 and the second driving rod 51 slide on one end of the two guide rails 63 and gradually move closer to the inclined ejector block 2, so that the first driving rod 41 and the second driving rod 51 drive the second molding block 4 and the third molding block 5 to move away from the inclined ejector block 2. When the third molding block 5 moves away from the second molding block 4, the undercut structure with the first mating edge 92 will be released, which facilitates the demoulding of the first mating edge 92.

[0049] Reference Figure 14-16 When the second molding block 4 moves away from the inclined top block 2, it will carry the fourth molding block 7 away from the formed second mating edge 93. At the same time, when the second molding block 4 moves away from the inclined top block 2, under the guidance of the inclined rod 81, the inclined rod 81 will drive the fourth molding block 7 to move away from the already formed second mating edge 93, so that the multiple columns 71 are separated from the second mating edge 93, thereby releasing the undercut structure of the multiple columns 71 and the multiple assembly holes 95, and facilitating the demolding of the second mating edge 93.

[0050] Through the above steps, the undercut structure between the first mating edge 92, the second mating edge 93, the third mating edge 94 and the inclined top block 2 is released, so that the bumper body 9 can be demoulded smoothly and the bumper body 9 can be prevented from being damaged during demoulding.

[0051] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. A large inclined top lateral side extraction structure for an injection mold, comprising a lower mold body (1), wherein the lower mold body (1) comprises a movable mold plate (11), a plurality of 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 mold plate (11) and the lower fixed plate (13), and an oil cylinder (15) is provided on the movable mold plate (11) for driving the two top plates (14) to move, and wherein: The movable template (11) is slidably connected with an inclined top block (2) for forming a matching portion (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 movable template (11) and is connected to the inclined top seat (16); the inclined top block (2) is slidably connected with a first forming block (3); the first forming block (3) is used to cooperate with the inclined top block (2) to form a third matching edge (94); an inclined groove (111) is provided on the movable template (11); a slider (31) is provided on the first forming block (3); 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 large inclined top lateral side extraction structure of an injection mold according to claim 1, characterized in that: The first forming block (3) is provided with a limiting groove (32), the inclined top block (2) is provided with a limiting block (23), and the limiting block (23) extends into the limiting groove (32).

3. The large inclined top lateral side extraction structure of an injection mold according to claim 2, characterized in that: The inclined top block (2) is provided with a mounting cavity (21), the first forming block (3) is located in the mounting cavity (21), a T-shaped block (22) is detachably connected in the mounting cavity (21), a T-shaped slot (33) is provided on the first forming block (3), and the T-shaped block (22) and the T-shaped slot (33) are slidably matched.

4. The large inclined top lateral drawer structure for injection mold according to claim 1, characterized in that: The inclined top block (2) is slidably connected with 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 matching edge (93); the third forming block (5) is used to cooperate with the inclined top block (2) to form a first matching edge (92); 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 slidably connected to the inclined top block (2); the movable template (11) is provided with a first driving part (6), and 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 large inclined top lateral side extraction structure of an injection mold according to claim 4, characterized in that: The first driving part (6) comprises a guide block (61) arranged on the movable plate (11), an inclined surface (62) arranged on the guide block (61) for contacting the inclined top block (2), and two guide rails (63) arranged on the guide block (61); the distance between the guide rails (63) and the inclined surface (62) gradually decreases from one end of the guide rail (63) close to the top plate (14) to the other end of the guide rail (63) away from the top plate (14); one end of the first driving rod (41) away from the second molding block (4) extends out of the inclined top block (2) and is slidably connected to one of the guide rails (63); and one end of the second driving rod (51) away from the third molding block (5) extends out of the inclined top block (2) and is slidably connected to the other guide rail (63).

6. The large inclined top lateral side extraction structure of an injection mold according to claim 5, characterized in that: The second forming block (4) is slidably connected to a fourth forming block (7) for forming a second matching edge (93); the fourth forming block (7) is provided with a plurality of columns (71), and the plurality of columns (71) are used to form a plurality of assembly holes (95); the inclined top block (2) is provided with a second driving part (8), and the second driving part (8) is used to drive the fourth forming block (7) to slide when the second forming block (4) moves away from the inclined top block (2) so as to move the plurality of columns (71) away from the second matching edge (93).

7. The injection mold large inclined top lateral side extraction structure according to claim 6, characterized in that: The second driving part (8) comprises an inclined rod (81) arranged on the inclined top block (2); an inclined hole (72) is provided on the fourth forming block (7), and the inclined rod (81) is inserted into the inclined hole (72); when the second forming block (4) moves away from the inclined top block (2), the inclined rod (81) drives the fourth forming block (7) to move away from the second matching edge (93).

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