Large sliding block direction-finding pulling deformation demolding injection molding mold

Abstract

The utility model provides a large slide block direction-finding pulling deformation demoulding injection moulding mould which comprises a top plate, an upper mould, a lower mould, an ejector plate and a bottom plate which are arranged in sequence, a side pulling assembly is further arranged at the side end of the lower mould in a sliding mode, a cavity used for forming a support body is formed among the upper mould, the lower mould and the side pulling assembly, and a mould pulling assembly is further arranged at the bottom of the side pulling assembly. The drawing die assembly is embedded into the lower die, the drawing die assembly pulls the bracket body and enables the inverted buckle II to be separated from the lower die when the side pulling assembly performs core pulling, the inverted buckle I is separated through the side pulling assembly, the molded bracket body is bent through the drawing die assembly, so that the inverted buckle II is separated, and the problem of interference is avoided when the bracket body is ejected out; the problem that the second inverted buckle cannot be ejected out is solved.

Description

Technical Field

[0001] The utility model relates to a mold, in particular to a large slider directional pulling deformation demoulding injection molding mold. Background Art

[0002] like Figure 1 、 Figure 2 As shown, a front bumper upper support bracket includes a bracket body 90, which is L-shaped and has a mesh block 91 on the inner side of its front end. The outer side of the mesh block 91 is provided with a plurality of through mesh holes, and the inner side of the mesh block 91 is provided with an inner mesh groove. The through mesh holes and the inner mesh groove form an undercut 1 92 and an undercut 2 93 respectively. The bracket body 90 is also provided with an upper buckle and a side buckle.

[0003] In the design of the mold, the front core pulling method is generally used to complete the undercut processing. Because the undercut is on the inside of the product, the above-mentioned undercut 2 cannot be core pulled, resulting in the problem that the product cannot be ejected, and the product itself needs to be changed. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a large slider directional tensile deformation demoulding injection molding die, which solves the problem that the undercut second cannot be ejected.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a large slider directional pulling deformation demolding injection molding mold, including a top plate, an upper mold, a lower mold, an ejection plate and a bottom plate arranged in sequence, and the side end of the lower mold is also slidably provided with a side withdrawal assembly, and a cavity for forming the bracket body is formed between the upper mold, the lower mold and the side withdrawal assembly. A drawing die assembly is also provided at the bottom of the side withdrawal assembly, and the drawing die assembly is embedded in the lower mold. When the side withdrawal assembly performs core pulling, the drawing die assembly pulls the bracket body and causes the second undercut to separate from the lower mold.

[0006] Through the above technical means, the side pull-out component is used to complete the removal of the undercut one, and the formed bracket body is bent by the drawing die component, so that the undercut two is removed, so that there will be no interference when the bracket body is ejected, solving the problem that the undercut two cannot be ejected.

[0007] Preferably, the side pull-out assembly includes a side pull-out block, a cylinder and a mounting plate, the mounting plate is fixedly arranged on the side end of the lower mold, the cylinder is arranged on the mounting plate, a sliding groove is provided on the lower mold, the side pull-out block is slidingly arranged in the sliding groove, the output end of the cylinder is fixedly connected to the side pull-out block, and a die head for forming an undercut is provided in the side pull-out block.

[0008] Through the above technical means, the side withdrawal block is driven to move by the oil cylinder, so that the side withdrawal block can complete the core pulling function along the sliding groove, so that the undercut is disengaged.

[0009] Preferably, a first limiting sliding groove is provided at the bottom of the side core-pulling block, a first limiting sliding block is provided on the sliding groove, the first limiting sliding block is in sliding fit with the first limiting sliding groove, an inclined guide surface is further provided on the side core-pulling block, an inclined guide groove is opened at the bottom of the upper die, and the inclined guide surface is adapted to the inclined guide groove.

[0010] By the above technical means, through the cooperation of the first limiting sliding groove and the first limiting sliding block, the sliding accuracy of the side core-pulling block is increased, thereby improving the accuracy of the product. Through the cooperation between the inclined guide surface and the inclined guide groove, the position accuracy of the side core-pulling block during mold closing is ensured, and the accuracy of the product is further increased.

[0011] Preferably, the mold pulling assembly includes a pulling block and a first driving source. A slot is opened at the side end of the lower die, the pulling block is arranged in the slot, and the first driving source drives the pulling block to pull the bracket body.

[0012] By the above technical means, the first driving source drives the pulling block to move, so that the pulling block pulls the bracket body to deform, and the second undercut is disengaged.

[0013] Preferably, the first driving source includes a pull stud and a first spring. A countersunk head hole is further opened inside the pulling block. One end of the pull stud is arranged in the countersunk head hole, and the other end is fixedly connected to the side core-pulling block. The first spring is sleeved on the pull stud and arranged between the pulling block and the side core-pulling block.

[0014] By the above technical means, the pulling block and the side core-pulling block are connected by the pull stud, so that after the side core-pulling block disengages the first undercut, the second undercut is disengaged together. By arranging the first spring, when the side core-pulling block disengages the first undercut, the pulling block remains stationary. After the first undercut is disengaged, the pull stud abuts against the countersunk head hole to move the pulling block outwards, so as to realize the sequential disengagement of the first undercut and the second undercut.

[0015] Preferably, a first forming block is further provided at the bottom of the upper die. The first forming block is used for forming the upper buckle, and the first forming block is fixed to the bottom of the upper die by screws.

[0016] By the above technical means, by fixing the first forming block to the bottom of the upper die through a screw rod, the part that needs to be machined during the manufacturing process of the upper die is reduced, and the manufacturing cost of the mold is reduced.

[0017] Preferably, a second limiting sliding groove is further opened at the side end of the lower die. Pressing blocks are arranged at both side ends of the second limiting sliding groove. The pressing blocks and the second limiting sliding groove form a T-shaped groove. A second forming block is arranged in the second limiting sliding groove. The second forming block is used for forming the side buckle. A second spring is further arranged between the second forming block and the lower die. An extreme clamping block is further provided on the second limiting sliding groove. A reset inclined surface is opened at the top side of the second forming block.

[0018] Through the above technical means, by setting the second forming block, and through the spring, the limit clamping block and the reset inclined plane, the second forming block automatically completes the side core pulling of the side buckle and the reset of the second forming block when the mold is opened and closed. Description of the Drawings

[0019] Figure 1 Structural schematic of the bracket body Figure 1 ;

[0020] Figure 2 Structural schematic of the bracket body Figure 2 ;

[0021] Figure 3 Structural schematic diagram of the embodiment;

[0022] Figure 4 Partial schematic diagram of the embodiment;

[0023] Figure 5 Structural schematic diagram of the lower mold;

[0024] Figure 6 Structural schematic diagram of the side core pulling block;

[0025] Figure 7 Structural schematic diagram of the upper mold;

[0026] Figure 8 Cross-sectional schematic diagram of the mold pulling assembly;

[0027] Figure 9 Structural schematic diagram of the second forming block;

[0028] Figure 10 Cross-sectional schematic diagram of the second forming block.

[0029] Reference numerals: 1, top plate; 2, upper mold; 3, lower mold; 4, ejector plate; 5, bottom plate; 6, side core pulling assembly; 7, mold pulling assembly; 8, side core pulling block; 9, oil cylinder; 10, mounting plate; 11, sliding groove; 12, die head; 13, first limit sliding groove; 14, first limit sliding block; 15, inclined guide surface; 16, inclined guide groove; 17, pulling block; 18, first driving source; 19, embedding groove; 20, pull nail; 21, first spring; 22, counterbored hole; 23, first forming block; 24, second limit sliding groove; 25, pressing block; 26, second forming block; 27, second spring; 28, limit clamping block; 29, reset inclined plane; 90, bracket body; 91, mesh block; 92, first undercut; 93, second undercut; 94, upper deep undercut; 95, side deep undercut. Detailed Description of the Invention

[0030] The following further details the specific embodiments of the present invention in conjunction with the drawings, so that the technical solutions of the present invention are easier to understand and master.

[0031] A large slider direction-finding and deformation-demolding injection molding die, as Figure 3 , Figure 8 shown, includes a top plate 1, an upper mold 2, a lower mold 3, an ejector plate 4 and a bottom plate 5 arranged in sequence. An ejector rod is also arranged on the ejector plate 4. The ejector rod penetrates through the lower mold 3 and is used to eject the bracket body 90. A side core-pulling assembly 6 is also slidably arranged at the side end of the lower mold 3. A cavity for forming the bracket body 90 is formed between the upper mold 2, the lower mold 3 and the side core-pulling assembly 6. A mold pulling assembly 7 is also arranged at the bottom of the side core-pulling assembly 6. The mold pulling assembly 7 is embedded in the lower mold 3. When the side core-pulling assembly 6 performs core-pulling, the mold pulling assembly 7 pulls the bracket body 90 and separates the second undercut 93 from the lower mold 3.

[0032] As Figure 3 , Figure 4 , Figure 6 shown, the side core-pulling assembly 6 includes a side core-pulling block 8, an oil cylinder 9 and a mounting plate 10. The mounting plate 10 is fixedly arranged at the side end of the lower mold 3. The oil cylinder 9 is arranged on the mounting plate 10. A sliding groove 11 is opened on the lower mold 3. The side core-pulling block 8 is slidably arranged in the sliding groove 11. The output end of the oil cylinder 9 is fixedly connected to the side core-pulling block 8. A die head 12 for forming the first undercut 92 is opened in the side core-pulling block 8. The die head 12 forms the first undercut 92.

[0033] As Figure 4 , Figure 5 , Figure 7 shown, a first limiting sliding groove 13 is arranged at the bottom of the side core-pulling block 8. A first limiting sliding block 14 is arranged on the sliding groove 11. The first limiting sliding block 14 is slidably matched with the first limiting sliding groove 13. An inclined guide surface 15 is also arranged on the side core-pulling block 8. An inclined guide groove 16 is opened at the bottom of the upper mold 2. The inclined guide surface 15 is adapted to the inclined guide groove 16. Through the cooperation of the first limiting sliding groove 13 and the first limiting sliding block 14, the sliding precision of the side core-pulling block 8 is increased, thereby improving the precision of the product. Through the cooperation between the inclined guide surface 15 and the inclined guide groove 16, during mold closing, through the cooperation between the inclined guide surface 15 and the inclined guide groove 16, the position precision of the side core-pulling block 8 during mold closing is ensured, further increasing the precision of the product.

[0034] As Figure 6 , Figure 8As shown, the drawing die assembly 7 includes a pulling block 17 and a first driving source 18. An embedding groove 19 is formed at the side end of the lower die 3. The pulling block 17 is arranged in the embedding groove 19. The first driving source 18 drives the pulling block 17 to pull the bracket body 90. The first driving source 18 includes a pull stud 20 and a first spring 21. A counterbored hole 22 is further formed inside the pulling block 17. One end of the pull stud 20 is arranged in the counterbored hole 22, and the other end is fixedly connected to the side core-pulling block 8. The first spring 21 is sleeved on the pull stud 20 and arranged between the pulling block 17 and the side core-pulling block 8. When the mold is closed, there is a certain gap between the head of the pull stud 20 and the bottom surface of the counterbored hole 22. When the side core-pulling block 8 disengages the first undercut 92, the pull stud 20 and the side core-pulling block 8 move together. At this time, the head of the pull stud 20 gradually approaches the bottom surface of the counterbored hole 22. At the same time, the spring presses the pulling block 17 in the embedding groove 19 to keep the pulling block 17 stationary. When the disengagement of the first undercut 92 is completed, the head of the pull stud 20 abuts against the bottom surface of the counterbored hole 22, causing the pulling block 17 to move outwards. At this time, the pulling block 17 deforms the bracket body 90 to a certain extent and disengages the second undercut 93 from the lower die 3, thereby realizing the sequential disengagement of the first undercut 92 and the second undercut 93 during side core-pulling. Finally, the bracket body 90 can be demolded by ejecting with an ejector rod.

[0035] As Figure 7 shown, a first forming block 23 is further arranged at the bottom of the upper die 2. The first forming block 23 is used for forming an upper buckle. The first forming block 23 is fixed to the bottom of the upper die 2 by screws, thereby reducing the part that needs to be machined during the manufacturing process of the upper die 2 and lowering the manufacturing cost of the mold.

[0036] As Figure 9 、 Figure 10 shown, a second limiting sliding groove 24 is further formed at the side end of the lower die 3. Pressure blocks 25 are arranged at both side ends of the second limiting sliding groove 24. The pressure blocks 25 and the second limiting sliding groove 24 form a T-shaped groove. A second forming block 26 is arranged in the second limiting sliding groove 24. The second forming block 26 is used for forming a side buckle. A second spring 27 is further arranged between the second forming block 26 and the lower die 3. An extreme locking block 28 is further arranged on the second limiting sliding groove 24. Reset inclined surfaces 29 are formed on the top side of the second forming block 26 and the bottom of the upper die 2 respectively. The two reset inclined surfaces 29 are adapted to each other. When the upper die 2 and the lower die 3 are closed, the upper die 2 drives the second forming block 26 to move to the corresponding position through the cooperation of the reset inclined surfaces 29.

[0037] Of course, the above are only typical examples of the present invention. In addition, the present invention can also have many other specific implementation manners. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. A large slider direction-finding and stretching deformation demolding injection molding die, comprising a top plate (1), an upper die (2), a lower die (3), an ejector plate (4) and a bottom plate (5) arranged in sequence, and characterized in that: A side-drawing component (6) is also slidably arranged at the side end of the lower die (3). A cavity for forming the bracket body (90) is formed among the upper die (2), the lower die (3) and the side-drawing component (6). A die-pulling component (7) is also arranged at the bottom of the side-drawing component (6). The die-pulling component (7) is embedded in the lower die (3). When the side-drawing component (6) performs core-pulling, the die-pulling component (7) pulls the bracket body (90) and separates the second undercut (93) from the lower die (3).

2. The large slider direction measurement and tensile deformation demolding injection molding die according to claim 1, characterized in that: The side-drawing component (6) includes a side-drawing block (8), an oil cylinder (9) and a mounting plate (10). The mounting plate (10) is fixedly arranged at the side end of the lower die (3). The oil cylinder (9) is arranged on the mounting plate (10). A sliding groove (11) is formed on the lower die (3). The side-drawing block (8) is slidably arranged in the sliding groove (11). The output end of the oil cylinder (9) is fixedly connected to the side-drawing block (8). A die head (12) for forming the first undercut (92) is formed in the side-drawing block (8).

3. The large slider direction-finding and tensile deformation demolding injection molding die according to claim 2, characterized in that: A first limiting sliding groove (13) is arranged at the bottom of the side-drawing block (8). A first limiting sliding block (14) is arranged on the sliding groove (11). The first limiting sliding block (14) is slidably matched with the first limiting sliding groove (13). An inclined guide surface (15) is also arranged on the side-drawing block (8). An inclined guide groove (16) is formed at the bottom of the upper die (2). The inclined guide surface (15) is adapted to the inclined guide groove (16).

4. A large slider direction-finding and stretching deformation demolding injection molding die according to claim 2, characterized in that: The die-pulling component (7) includes a pulling block (17) and a first driving source (18). An embedding groove (19) is formed at the side end of the lower die (3). The pulling block (17) is arranged in the embedding groove (19). The first driving source (18) drives the pulling block (17) to pull the bracket body (90).

5. The injection molding die for large slider direction measurement and tensile deformation demolding according to claim 4, characterized in that: The first driving source (18) includes a pull nail (20) and a first spring (21). A counterbore (22) is also formed inside the pulling block (17). One end of the pull nail (20) is arranged in the counterbore (22), and the other end is fixedly connected to the side-drawing block (8). The first spring (21) is sleeved on the pull nail (20) and arranged between the pulling block (17) and the side-drawing block (8).

6. A large slider direction-finding and tensile deformation demolding injection molding die according to claim 1, characterized in that: A first forming block (23) is also arranged at the bottom of the upper die (2). The first forming block (23) is used for forming the upper buckle. The first forming block (23) is fixed to the bottom of the upper die (2) by screws.

7. A large slider direction-finding and tensile deformation demolding injection molding die according to claim 1, characterized in that: A second limiting sliding groove (24) is also formed at the side end of the lower die (3). Pressing blocks (25) are arranged at both side ends of the second limiting sliding groove (24). The pressing blocks (25) and the second limiting sliding groove (24) form a T-shaped groove. A second forming block (26) is arranged in the second limiting sliding groove (24). The second forming block (26) is used for forming the side buckle. A second spring (27) is also arranged between the second forming block (26) and the lower die (3). A limit block (28) is also arranged on the second limiting sliding groove (24). A reset inclined surface (29) is formed at the top side of the second forming block (26).

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