Anti-strain structure of large-cap mold

Abstract

The utility model relates to an anti-strain structure of a large-cap mold, and belongs to the technical field of injection molds. The anti-strain structure comprises a fixed base, a push plate installed on the fixed base in a sliding mode, a mold core fixed to the push plate, a large cap ejector block fixed to the mold core and inclined ejector blocks arranged on the two sides of the mold core, and a supporting structure is arranged at the bottom of the mold core. The supporting structure comprises a fixing block fixed to the bottom of the large cap ejecting block and a supporting plate which abuts against the fixing block in a sliding mode, and the supporting plate is fixed to the bottom of the mold core. The method has the effect of reducing the falling probability of the large cap.

Description

Technical Field

[0001] This application relates to the field of injection mold technology, and in particular to a structure for preventing tearing of a large cap mold. Background Technology

[0002] Car bumpers, installed at the front and rear of a vehicle, are important exterior components. Their appearance and how well they fit the body directly affect the overall image of the car. Plastic bumpers, due to their good elasticity, light weight, low cost, and ease of replacement, have long been a replacement for early sheet metal parts and have become an indispensable part of modern automobiles.

[0003] To facilitate product molding, molds used for automotive bumper molding typically incorporate a large cap and a large, angled ejector block structure. Due to the product's height, the corresponding size and weight of the large cap are relatively large. When the product is ejected from the mold, the large cap is prone to sagging under gravity, which can affect the molding quality of the product.

[0004] In view of the above-mentioned related technologies, this application provides a structure to prevent damage to large cap molds. Utility Model Content

[0005] To reduce the probability of the peaked cap falling, this application provides a structure to prevent damage to the peaked cap mold.

[0006] The anti-tear-damage structure for a large cap mold provided in this application adopts the following technical solution:

[0007] A structure for preventing damage to a cap mold includes a fixed base, a push plate slidably mounted on the fixed base, a core fixed to the push plate, a cap top block fixed to the core, and inclined top blocks disposed on both sides of the core. A support structure is provided at the bottom of the core, the support structure including a fixed block fixed to the bottom of the cap top block and a support plate slidably abutting against the fixed block, the support plate being fixed to the bottom of the core.

[0008] By adopting the above technical solution, the support structure can support the end of the cap, reduce the probability of the cap falling, reduce the horizontal pressure on the mold ejection mechanism, and improve its service life.

[0009] Optionally, the fixing block has an extension extending to the outside of the support plate, and the bottom of the extension is provided with a cooling water connector that connects to the internal cooling channel of the large cap top block.

[0010] By adopting the above technical solution, the cooling water connector extends from the extension, making the overall structure of the top block of the cap more compact and able to protect the cooling system.

[0011] Optionally, the top of the support plate is provided with a first wear-resistant plate, and the fixing block has a second wear-resistant plate that abuts against the first wear-resistant plate.

[0012] By adopting the above technical solution, the setting of the first wear-resistant plate and the second wear-resistant plate reduces the sliding friction between the fixed block and the support plate, reduces wear caused by operation, and improves service life.

[0013] Optionally, the top block of the large cap has two fixing blocks, which are located on both sides of the support plate along the product ejection direction, and the core is provided with a clearance groove for arranging the fixing blocks.

[0014] By adopting the above technical solution, the setting of two fixed blocks makes the overall stability of the support structure more ideal, ensuring the stability of the top block of the large cap when it moves. The setting of the clearance groove makes the structure of the mold more compact and saves space.

[0015] Optionally, it also includes a support assembly, which includes a push block disposed on the inclined top block, a support block slidably mounted on the push block, and an elastic element connecting the support block. The core is provided with a guide rail to guide the push block away from the inclined top block.

[0016] When the inclined top block drives the support assembly to move away from the core, the inclined top block moves away from the inclined top block under the action of the guide slide rail, and at the same time the support block extends from the push block and corresponds to the tail end of the product.

[0017] By adopting the above technical solution, when the inclined ejector block moves, it drives the support component to move synchronously. The push block gradually moves away from the inclined ejector block under the action of the guide rail, so that the support block extends out from the push block under the action of the elastic element, thereby supporting the tail end of the product and reducing the probability of the product tipping over when demolding.

[0018] Optionally, the pushing block includes an inner pushing block and an outer pushing block near the core side. The inner pushing block is provided with an inner pushing rod that cooperates with the guide slide rail, and the outer pushing block is provided with an outer pushing rod that cooperates with the guide slide rail.

[0019] By adopting the above technical solution, the structural composition of the push block is disclosed. The inner push block and the outer push block make the push block structure modular and easy to assemble. The stability and smoothness of the push block movement are improved by the cooperation of the outer push rod and the inner push rod with the guide rail.

[0020] Optionally, the guide slide rail is provided with an upper slide rail and a lower slide rail on its upper and lower sides, respectively cooperating with the outer push rod and the inner push rod.

[0021] By adopting the above technical solution, the vertical distribution of the inner and outer push rods further improves the sliding stability of the push block compared to the two push rods sliding in the same horizontal direction.

[0022] Optionally, both the upper slide rail and the lower slide rail include a forming section, an inclined section, and an ejection section, with the ejection section located on the side of the forming section near the push block.

[0023] By adopting the above technical solution, the structural composition of the upper slide rail is specifically disclosed. The three-section setting allows the push block to have three states. When the push rod is in the forming section, the push block and the inclined top block are in contact for the injection molding of the product. When the push rod is in the tilting section, the push block gradually moves away from the inclined top block. When the push rod is in the ejection section, the support block extends completely from the push block and can support the product.

[0024] Optionally, the push block has an installation slot for mounting the support block, and the push block has a pressure block at one end of the installation slot for fixing the end of the elastic element.

[0025] By adopting the above technical solution, the installation method of the support block is disclosed. The pressure block is fixed in the installation through groove, the elastic element is arranged in the installation through groove, and its two ends are fixed to the support block and the pressure block respectively. When the push rod moves to the push-out section, the elastic element automatically resets and drives the support block to extend outward from the push block.

[0026] Optionally, the inclined top block is provided with a limiting block to guide the pushing block to move outward, and the pushing block has a limiting groove that cooperates with the limiting block.

[0027] By adopting the above technical solution, the cooperation between the limiting block and the limiting groove can guide and limit the horizontal movement of the pushing block, ensuring the horizontality of the pushing block when it moves away from the inclined top block.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. By setting up a support structure, this application can support the end of the cap, reduce the probability of the cap falling, and at the same time reduce the horizontal pressure on the mold ejection mechanism, thus improving its service life.

[0030] 2. By setting up support components, this application can support the tail end of the product, reducing the probability of the product tipping over during demolding and ensuring the stability of the product during demolding;

[0031] 3. This application, through the cooperation of the limiting block and the limiting groove, can guide and limit the horizontal movement of the pushing block, and maintain the smooth horizontal movement of the pushing block. Attached Figure Description

[0032] Figure 1 This is an exploded view of the anti-tear structure and product according to an embodiment of this application.

[0033] Figure 2 This is a schematic diagram of the support structure according to an embodiment of this application.

[0034] Figure 3 This is a partially exploded view of the support structure according to an embodiment of this application.

[0035] Figure 4 This is a schematic diagram of the bottom structure of the fixing block in an embodiment of this application.

[0036] Figure 5 This is a schematic diagram of the structure of the supporting components in an embodiment of this application.

[0037] Figure 6 This is a schematic diagram of the cooperative structure of the push block and the guide rail in an embodiment of this application.

[0038] Figure 7 This is a cross-sectional schematic diagram of the external push rod in an embodiment of this application.

[0039] Figure 8 This is a cross-sectional schematic diagram of the push rod in an embodiment of this application.

[0040] Figure 9 This is a cross-sectional schematic diagram of the support block inside the outer push rod according to an embodiment of this application.

[0041] Explanation of reference numerals in the attached drawings: 1. Fixed base; 2. Push plate; 3. Core; 31. Relief groove; 32. Guide slide rail; 321. Upper slide rail; 3211. Forming section; 3212. Inclined section; 3213. Ejection section; 322. Lower slide rail; 4. Top cap block; 5. Inclined ejector block; 51. Limiting block; 6. Fixed block; 61. Extension; 62. Cooling water connector; 63. Rectangular groove; 64. Second bearing plate. 7. Grinding plate; 8. Support plate; 9. Fixing block; 10. First wear-resistant plate; 11. Support assembly; 12. Pushing block; 13. Inner push block; 14. Second through hole; 15. Outer push block; 16. First through hole; 17. Mounting through groove; 18. Limiting groove; 19. Inner push rod; 10. Outer push rod; 11. Support block; 12. Elastic element; 13. Pressure block; 14. Product. Detailed Implementation

[0042] The following is in conjunction with the appendix Figure 1-9 This application will be described in further detail.

[0043] This application discloses a structure for preventing damage to large cap molds.

[0044] Reference Figure 1A structure for preventing damage to a large cap mold includes a fixed base 1, a push plate 2 slidably mounted on the fixed base 1, a core 3 fixedly mounted on the push plate 2, a large cap top block 4 slidably mounted on the core 3, and two inclined ejector blocks 5 disposed on the core 3 for demolding the product 9. In this embodiment, the X direction is the demolding direction of the product 9, and the Z direction is the height direction.

[0045] Reference Figure 2 and Figure 3 The bottom of the core 3 is provided with a support structure for supporting the top block 4 of the large cap. The support structure includes a fixing block 6 and a support plate 7. The support plate 7 is generally rectangular, with its length direction parallel to the X direction. The support plate 7 and the bottom of the core 3 are fixedly connected by bolts. The top of the support plate 7 has fixing blocks 71 on both sides of its length direction that insert into the bottom of the core 3 to further increase the connection strength between the support plate 7 and the core 3.

[0046] The fixing block 6 has an L-shaped cross-section in the height direction and is fixed to the bottom of the cap with bolts. The bottom of the core 3 has a relief groove 31 for accommodating the fixing block 6. The relief groove 31 corresponds to the support plate 7, and the relief groove 31 makes the structure between the cap top block 4 and the core 3 more compact. The fixing block 6 has an extension 61 extending to the outside of the support plate 7. Multiple sets of cooling water connectors 62 are provided at the bottom of the extension 61 of the fixing block 6. The cooling water connectors 62 are connected to the internal cooling channels of the cap top block 4.

[0047] In this embodiment, the top cap 4 is equipped with two fixing blocks 6, which are symmetrically arranged along the axis of the support plate 7. When the product 9 is demolded, the top cap 4 moves away from the core 3. The top cap 4 is suspended relative to the core 3 and tends to fall downwards. The fixing blocks 6 provide support for the top cap and can slide synchronously with the top cap 4 to ensure the stability of the top cap 4.

[0048] Combination Figure 4 To reduce wear during the sliding of the fixing block 6, a rectangular groove 63 is provided at the bottom of the fixing block 6, and a second wear-resistant plate 64 is fixed in the rectangular groove 63. The second wear-resistant plate 64 is a hardened wear-resistant plate in the prior art. The second wear-resistant plate 64 can be fixed by bolts, snap-fit, plug-in, etc. In this embodiment, the second wear-resistant plate 64 and the fixing block 6 are fixed by bolts.

[0049] The top of the support plate 7 is also equipped with a first wear plate 72 that abuts against the second wear plate 64. The first wear plate 72 is a self-lubricating wear plate in the prior art, so as to reduce the friction between the two wear plates and facilitate maintenance, replacement and adjustment.

[0050] Reference Figure 5 and Figure 6 The inclined ejector block 5 is also provided with a support component 8 for supporting the demolding of the product 9. The support component 8 is installed on the inclined ejector block 5 and includes a push block 81, a support block 82 and an elastic element 83.

[0051] The inclined push block 5 is equipped with a limiting block 51 for guiding the horizontal movement of the push block 81. The limiting block 51 is made of high-strength brass and is fixed to the outside of the inclined push block 5 with bolts. The push block 812 has a limiting groove 8123 that mates with the limiting block 51. The limiting groove 8123 is a U-shaped groove that runs through both sides, used to ensure the horizontality of the push block 812 when it moves away from the core 3.

[0052] Reference Figure 6 , Figure 7 and Figure 8 The push block 81 includes an inner push block 811 and an outer push block 812, with the inner push block 811 located near the core 3. The outer side of the tail end of the product 9 abuts against the inner side of the outer push block 812. The inner push block 811 and the outer push block 812 are fixed by bolts. Both the inner push block 811 and the outer push block 812 are provided with push rods extending horizontally toward the core 3. The push rods include an inner push rod 813 and an outer push rod 814. Both the inner push block 811 and the outer push block 812 have a first through hole 8121 that penetrates both end faces and allows the outer push rod 814 to be arranged. The first through hole 8121 forms a countersunk hole structure on the outer side of the outer push block 812, and the outer push rod 814 and the outer push block 812 are fixedly connected by bolts at the countersunk hole.

[0053] The inner push block 811 has a second through hole 8111 that passes through both end faces and provides space for the inner push rod 813. The second through hole 8111 has a countersunk hole structure on the outside of the inner push block 811. The inner push rod 813 and the inner push rod 813 are fixedly connected in the countersunk hole by bolts.

[0054] The core 3 is provided with a guide rail 32 that slides and engages with the inner push rod 813 and the outer push rod 814. The guide rail 32 is fixed to the core 3 by bolts. An upper slide rail 321 and a lower slide rail 322 are integrally provided on both the upper and lower sides of the guide rail 32 along the X direction. The end of the outer push rod 814 has an upper sliding groove that engages with the upper slide rail 321, and the end of the inner push rod 813 has a lower sliding groove that engages with the lower slide rail 322.

[0055] The upper slide rail 321 and the lower slide rod have the same structure, and along the demolding direction of product 9, they sequentially include a forming section 3211, an inclined section 3212, and an ejection section 3213. When both the outer push rod 814 and the inner push rod 813 are located in the forming section 3211, they are used for injection molding of product 9 in this state. When both the outer push rod 814 and the inner push rod 813 are located in the ejection section 3213, the push block 81 and the outer side of product 9 are in a spaced-out state in this state.

[0056] Reference Figure 9The support block 82 is generally rectangular in shape, and the bottom of the outer push block 812 has an installation slot 8122 for mounting the support block 82. The elastic element 83 is a spring, which is arranged in the installation slot 8122. A pressure block 84 is provided on the outer side of the outer push block 812 at the installation slot 8122. The pressure block 84 and the outer push block 812 are fixed with bolts, and the two ends of the elastic element 83 are respectively connected to the pressure block 84 and the support block 82. When the inner and outer push rods 814 are in the forming section 3211, the end of the support block 82 abuts against the outer side of the inclined top block 5, and the elastic element 83 is in a compressed state.

[0057] The implementation principle of the anti-pull-out structure for a large cap mold in this application embodiment is as follows: When the product 9 is ejected from the mold, the large cap top block 4 moves away from the core 3. Through the sliding of the fixing block 6 and the support plate 7, the large cap top block 4 is supported as a whole, which reduces the pressure on the ejector rod connecting the large cap top block 4, reduces the probability of the large cap top block 4 falling, and improves the service life of the mold.

[0058] When the inclined ejector block 5 pushes the product 9 away from the fixed seat 1 in the X direction, the push block 81 and the inclined ejector block 5 move synchronously. Through the cooperation of the inner and outer push rods 814 and the guide slide rail 32, the outer push block 812 moves gradually away from the core 3 while moving in the X direction. The elastic element 83 gradually recovers its deformation from the compressed state, so that the support block 82 extends out from the mounting through groove 8122. After the support block 82 extends out, it corresponds to the tail end of the product 9, thereby supporting the tail end of the product 9 and improving the stability of the product 9 when demolding.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A large cap mold anti-pulling structure, comprising a fixed seat (1), a push plate (2) slidably installed on the fixed seat (1), a core (3) fixed on the push plate (2), a large cap top block (4) arranged on the core (3), and an inclined top block (5) arranged on both sides of the core (3), characterized in that, The core (3) is provided with a support structure at the bottom, which comprises a fixed block (6) fixed to the bottom of the large cap top block (4) and a support plate (7) in sliding abutment with the fixed block (6), and the support plate (7) is fixed to the bottom of the core (3).

2. A pull-off prevention structure for a large cap mold according to claim 1, wherein The fixed block (6) has an extension (61) extending to the outside of the support plate (7), and the bottom of the extension (61) is provided with a cooling water joint (62) communicating with the internal cooling flow channel of the large cap top block (4).

3. A pull-off prevention structure for a large cap mold according to claim 1, wherein The top of the support plate (7) is provided with a first wear plate (72), and the fixed block (6) has a second wear plate (64) in abutment with the first wear plate (72).

4. A pull-off prevention structure for a large cap mold according to claim 1, wherein The large cap top block (4) has two fixed blocks (6), and the two fixed blocks (6) are respectively located on the two sides of the support plate (7) in the product (9) pushing direction, and the core (3) is provided with a gap slot (31) for arranging the fixed block (6).

5. A pull-off prevention structure for a large cap mold according to claim 1, wherein Further comprising a support assembly (8), the support assembly (8) comprises a pushing block (81) arranged on the inclined top block (5), a support block (82) slidingly installed on the pushing block (81), and an elastic member (83) connecting the support block (82), and the core (3) is provided with a guide sliding rail (32) guiding the pushing block (81) away from the inclined top block (5); When the inclined top block (5) drives the support block (82) to move away from the core (3), the pushing block (81) is away from the inclined top block (5) under the action of the guide sliding rail (32), and at the same time, the support block (82) is extended from the pushing block (81) and corresponds to the tail end of the product (9).

6. A pull-off prevention structure for a large cap mold according to claim 5, wherein The inclined top block (5) is provided with a limiting block (51) guiding the outward movement of the pushing block (81), and the pushing block (81) is provided with a limiting groove (8123) matched with the limiting block (51).

7. A pull-off prevention structure for a large cap mold according to claim 5, wherein The pushing block (81) comprises an inner pushing block (811) close to one side of the core (3) and an outer pushing block (812), and the inner pushing block (811) is provided with an inner pushing rod (813) matched with the guide sliding rail (32), and the outer pushing block (812) is provided with an outer pushing rod (814) matched with the guide sliding rail (32).

8. A pull-off prevention structure for a large cap mold according to claim 7, wherein The upper and lower sides of the guide sliding rail (32) are provided with an upper sliding rail (321) and a lower sliding rail (322) matched with the outer pushing rod (814) and the inner pushing rod (813) respectively.

9. A pull-off prevention structure for a large cap mold according to claim 8, wherein The upper sliding rail (321) and the lower sliding rail (322) each comprise a forming section (3211), an inclined section (3212) and a pushing section (3213), and the pushing section (3213) is located on the side of the forming section (3211) close to the pushing block (81).

10. The pull-trap structure of a large cap mold according to claim 7, wherein The outer pushing block (812) is provided with an installation through slot (8122) for installing the support block (82), and the outer pushing block (812) is provided with a pressing block (84) at one end of the installation through slot (8122) for fixing the end of the elastic member (83).

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