Inner circular buckle six-petal type open-close mold injection mold

Abstract

The utility model provides a kind of inner circle buckle six petal formula open and close mould injection mould, including base, is equipped with multiple sets of clamping slot in base, and clamping slot is equipped with slider;Limiting plate and contraction air cylinder are arranged on the top of base, and mounting hole is equipped in the bottom of limiting plate, and contraction air cylinder axle end is clamped in mounting hole, and outer mould is provided on limiting plate, and injection cavity is equipped on outer mould, and inner mould assembly is clamped in injection cavity;Mould cover is provided on outer mould, and stripping assembly and limiting seat are provided on mould cover, and multiple sets of limiting posts are provided below limiting seat, and multiple sets of through holes are equipped on mould cover, and multiple sets of fixed holes are equipped on outer mould, and limiting post is worn in through hole, and is clamped in fixed hole.The device is realized by inner mould assembly, and the shaping of the inner circular shape of injection product is implemented, the diversity of product forming is improved, and the product meets the design requirement of inner circle.The device is through stripping assembly, reaches the purpose that the forming product is smoothly removed, and the injection production process is more efficient.

Description

Technical Field

[0001] This utility model belongs to the field of injection mold technology, and more specifically, it relates to an inner circular snap-fit ​​six-lobed opening and closing injection mold. Background Technology

[0002] In the plastics manufacturing industry, injection molds are often used for mass production of products. In the production of complex internal circular parts, in order to ensure the accuracy and integrity of the inner wall snap-fit, manufacturers often use multi-lobed mold structures for demolding. However, traditional injection molds do not have automated demolding functions, which leads to frequent manual intervention or mechanical jamming during the demolding process, requiring operators to spend time adjusting the mold. Furthermore, if the separation of the inner mold components is not smooth, the product surface can easily be scratched and the snap-fit ​​can be deformed under forced demolding, resulting in an increased scrap rate and affecting production progress and product quality. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides an inner circular snap-fit ​​six-lobed opening and closing injection mold, which solves the technical problem that traditional injection molds in the prior art do not have an automated demolding function.

[0004] The purpose and effect of this utility model of a six-lobed, inner circular snap-fit ​​injection mold are achieved by the following specific technical means:

[0005] A six-lobed, inner circular snap-fit ​​injection mold includes a base with multiple sets of slots for locking sliders. A limit plate and a shrink cylinder are positioned above the base. The limit plate has mounting holes at its bottom, and the shaft end of the shrink cylinder is engaged in the mounting holes. An outer mold is positioned on the limit plate, with an injection cavity containing an inner mold assembly. A mold cover is positioned on the outer mold, with a demolding assembly and a limit seat on it. Multiple limit posts are positioned below the limit seats. The mold cover has multiple sets of through holes, and the outer mold has multiple sets of fixing holes. The limit posts pass through the through holes and are engaged in the fixing holes.

[0006] According to a preferred embodiment, the inner mold assembly includes multiple sets of first petal-shaped blocks and multiple sets of second petal-shaped blocks. Trapezoidal guide rails are provided on both sides of the second petal-shaped blocks, and dovetail grooves are opened on both sides of the first petal-shaped blocks. The trapezoidal guide rails are engaged in the dovetail grooves and are slidably connected. The multiple sets of first petal-shaped blocks and multiple sets of second petal-shaped blocks are distributed at intervals to form an annular inner mold.

[0007] According to a preferred embodiment, the inner mold assembly further includes multiple sets of slide rods. Sliding holes are provided below the first petal block and the second petal block. The top end of the slide rod is engaged in the sliding hole, and the bottom end of the slide rod is rotatably connected to the top of the slider. Multiple sets of limiting holes and multiple sets of limiting grooves are provided on the limiting plate. The multiple sets of limiting holes and multiple sets of limiting grooves are distributed at intervals, and the slide rod passes through the limiting holes and the limiting grooves.

[0008] According to a preferred embodiment, the demolding assembly includes a hook plate and a demolding template. The hook plate is installed above the demolding template, the demolding template is disposed below the outer mold, and a pull plate is disposed below the hook plate, the pull plate being located below the demolding template.

[0009] According to a preferred embodiment, the demolding assembly further includes a demolding cylinder and a spring. The demolding cylinder is placed upside down between the limiting seat and the mold cover, and the shaft end of the demolding cylinder is connected to the top end of the mold cover. Both the bottom end of the outer mold and the top end of the demolding plate are provided with annular grooves, and the spring is engaged in the upper and lower sets of annular grooves.

[0010] According to a preferred embodiment, the ejector plate is provided with multiple sets of ejector rods, and the bottom end of the outer mold is provided with multiple sets of ejector holes, with the ejector rods passing through the ejector holes.

[0011] According to a preferred embodiment, the base is provided with multiple sets of optical axes, the template is provided with multiple sets of guide holes, the outer mold is provided with multiple sets of positioning holes, the optical axes pass through the guide holes, and the top end is locked in the positioning holes.

[0012] According to a preferred embodiment, the slider is slidably connected to the slot, the slot has grooves on both sides, the slider has a pin hole on one side, a slider rod is fitted in the groove, and the slider rod passes through the pin hole.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. This utility model, through the design of the demolding component, allows users to easily remove the molded plastic product from the mold, thus improving the demolding efficiency of the device. After injection molding is completed and the mold has cooled, the user can activate the demolding cylinder to drive the demolding platen action, eliminating the need for manual separation of the product from the mold and improving the convenience of the device in demolding operations.

[0015] 2. When using this device, the user can form the inner circular buckle through the inner mold assembly, enabling the user to obtain products that meet the size requirements and improving the adaptability of the device for producing specific products. Then, through the cooperation of the limiting post and limiting hole, the device can ensure that the demolding plate moves smoothly during the demolding process. Smooth demolding brings the benefit of less product damage to the user and improves the yield rate of products produced by this device. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the assembled structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the exploded structure of this utility model;

[0018] Figure 3 This is the front view of this utility model;

[0019] Figure 4 This is an exploded structural diagram of the inner mold assembly;

[0020] Figure 5 This is a schematic diagram of the internal mold assembly during shrinkage;

[0021] Figure 6 This is a schematic diagram of the structure of the first and second lobe-like blocks;

[0022] Figure 7 This is an exploded structural diagram of the outer mold and the ejector plate.

[0023] In the diagram, the correspondence between component names and drawing numbers is as follows:

[0024] 11. Base; 12. Slot; 13. Slider; 14. Limiting plate; 15. Shrinking cylinder; 16. Outer mold; 17. Injection cavity; 18. Mold cover; 19. Limiting seat; 21. Limiting post; 22. Fixing hole; 23. First petal block; 24. Second petal block; 25. Trapezoidal guide rail; 26. Dovetail groove; 27. Sliding rod; 28. Sliding hole; 29. ​​Limiting hole; 31. Limiting groove; 32. Hook plate; 33. Demolding plate; 34. Demolding cylinder; 35. Spring; 36. Ring groove; 37. Optical axis; 38. Ejection hole; 39. Ejection rod. Detailed Implementation

[0025] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the technical solution of this utility model, but should not be used to limit the scope of protection of this utility model.

[0026] Example:

[0027] like Figures 1 to 7As shown, this utility model provides an inner circular snap-fit ​​six-lobed opening and closing injection mold, including a base 11. The base 11 is the basic support structure of the entire mold, and multiple sets of slots 12 are formed on it. The slots 12 provide mounting positions for sliders 13, which are engaged in the slots 12 and can move within a certain range. A limiting plate 14 and a shrink cylinder 15 are arranged above the base 11. The bottom of the limiting plate 14 has a mounting hole, and the shaft end of the shrink cylinder 15 is installed in this hole. The shrink cylinder 15 drives the limiting plate 14 to move by extending and retracting. The limiting plate 14 supports the outer mold 16. The injection cavity 17 on the outer mold 16 is the space for injecting plastic raw materials into the mold. The inner mold assembly is placed in the injection cavity 17, and the two work together to determine the shape of the injection molded product. A mold cover 18 is provided on the outer mold 16, which closes the injection cavity 17 to prevent raw materials from overflowing. The mold cover 18 is equipped with a demolding component and a limiting seat 19. There are multiple sets of limiting posts 21 below the limiting seat 19. The multiple sets of through holes of the mold cover 18 correspond to the multiple sets of fixing holes 22 of the outer mold 16. After the limiting post 21 passes through the through hole of the mold cover 18, it is inserted into the fixing hole 22 of the outer mold 16, connecting the mold cover 18 and the outer mold 16, ensuring the mold sealing during injection molding and improving product quality.

[0028] like Figures 2 to 6 As shown, the inner mold assembly consists of multiple sets of first petal-shaped blocks 23 and multiple sets of second petal-shaped blocks 24. The second petal-shaped blocks 24 have trapezoidal guide rails 25 on both sides, and the first petal-shaped blocks 23 have dovetail grooves 26 on both sides. The trapezoidal guide rails 25 engage with the dovetail grooves 26 to achieve a sliding connection, allowing the first petal-shaped blocks 23 and the second petal-shaped blocks 24 to slide relative to each other. The multiple sets of first petal-shaped blocks 23 and multiple sets of second petal-shaped blocks 24 are spaced apart to form an annular inner mold. This annular inner mold adapts to the injection molding requirements of inner circular products. Through the combination and sliding of the petal-shaped blocks, it facilitates the removal of the product after injection molding, improving demolding convenience.

[0029] The inner mold assembly also includes multiple sets of sliding rods 27. Both the first lobe block 23 and the second lobe block 24 have sliding holes 28 below them. The top of the sliding rod 27 is inserted into the sliding hole 28, and the bottom is rotatably connected to the top of the slider 13. Multiple sets of limiting holes 29 and multiple sets of limiting grooves 31 are provided on the limiting plate 14 and are spaced apart, through which the sliding rods 27 pass. The sliding rods 27 connect the inner mold assembly and the slider 13. Under the action of the limiting holes 29 and limiting grooves 31 of the limiting plate 14, the movement trajectory of the inner mold assembly is restricted, allowing the inner mold assembly to open and close stably under the action of the slider 13, ensuring the position of the inner mold during injection molding, and contributing to the production of products with qualified dimensions.

[0030] like Figures 2 to 3 , Figure 7 As shown, the demolding assembly includes a hook plate 32 and a demolding template 33. The hook plate 32 is installed above the demolding template 33, which is positioned below the outer mold 16. A pull plate is located below the hook plate 32. When demolding is required after injection molding, the hook plate 32 pulls the demolding template 33 through the pull plate, causing it to separate from the outer mold 16, thereby removing the molded product from the outer mold 16 and improving demolding efficiency.

[0031] The demolding assembly also includes a demolding cylinder 34 and a spring 35. The demolding cylinder 34 is placed upside down between the limiting seat 19 and the mold cover 18, with its shaft end connected to the top of the mold cover 18. Both the bottom of the outer mold 16 and the top of the demolding template 33 are provided with annular grooves 36, and the spring 35 is engaged in the upper and lower annular grooves 36. After demolding, the spring 35 lifts the outer mold 16 and the demolding template 33, helping the demolding template 33 to return to its original position.

[0032] Multiple sets of ejector rods 39 are provided on the demolding template 33, and multiple sets of ejector holes 38 are opened at the bottom of the outer mold 16, with the ejector rods 39 passing through the ejector holes 38. During the demolding process, the ejector rods 39 can further assist in ejecting the product from the outer mold 16, enhancing the demolding effect, ensuring that the product smoothly leaves the mold, and improving production efficiency.

[0033] like Figures 2 to 3 As shown, multiple sets of optical axes 37 are provided on the base 11, multiple sets of guide holes are opened on the demolding template 33, and multiple sets of positioning holes are opened below the outer mold 16. The optical axes 37 pass through the guide holes and their top ends are engaged in the positioning holes. The optical axes 37 play a guiding and positioning role, ensuring that the demolding template 33 moves smoothly along the direction of the optical axes 37 during demolding, ensuring the separation of the product from the outer mold 16, and ensuring the position of the outer mold 16 on the base 11, thereby improving the stability of mold operation and the quality of injection molded products.

[0034] The slider 13 is slidably connected to the slot 12. The slot 12 has grooves on both sides, and the slider 13 has a pin hole on one side. A slide bar is inserted into the groove and passes through the pin hole. This connection structure makes the slider 13 slide more smoothly and stably in the slot 12, providing reliable support for the movement of the inner mold assembly, ensuring that the inner mold assembly does not deviate or jam during the opening and closing process, and helping to improve the service life of the mold and the precision of the injection molded product.

[0035] The specific usage and function of this embodiment are as follows:

[0036] When using this type of six-lobed, inner circular snap-fit ​​injection mold, the shrink cylinder 15 is activated first. The shrink cylinder 15 extends and retracts, driving the limiting plate 14. The slider 13 slides within the slot 12, and the inner mold assembly moves via the slide rod 27. In the inner mold assembly, the first lobe block 23 and the second lobe block 24 slide through the cooperation of the trapezoidal guide rail 25 and the dovetail groove 26, forming a ring-shaped inner mold and creating an injection cavity 17. The demolding cylinder 34 extends and closes the mold cover 18, forming a sealed injection space. Plastic raw material is then injected into the injection cavity 17, and injection molding begins.

[0037] After molding, the shrink cylinder 15 causes the inner mold assembly to shrink, and the first petal block 23 and the second petal block 24 exit the injection cavity 17, activating the demolding assembly. The demolding cylinder 34 pulls the mold cover 18, and the hook plate 32 moves the demolding plate 33 upward through the lower pull plate. At the same time, the ejector rod 39 on the demolding plate 33 passes through the ejector hole 38 at the bottom of the outer mold 16, ejecting the product. The optical shaft 37 ensures the smooth movement of the demolding plate 33, and the spring 35 resets the demolding plate 33, completing this injection molding. The entire process realizes the injection molding production of inner circular buckle products. From raw material injection to product demolding, all components work together to effectively complete the production task, improve production efficiency, and ensure that the product can be successfully molded and removed.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments.

Claims

1. A six-lobed, inner circular snap-fit ​​injection mold, comprising a base (11), characterized in that: Multiple slots (12) are provided above the base (11), and sliders (13) are fitted in the slots (12); a limiting plate (14) and a shrink cylinder (15) are provided above the base (11), and a mounting hole is provided at the bottom of the limiting plate (14). The shaft end of the shrink cylinder (15) is fitted in the mounting hole. An outer mold (16) is provided on the limiting plate (14), and an injection cavity (17) is provided on the outer mold (16). An inner mold assembly is fitted inside the plastic cavity (17); a mold cover (18) is provided on the outer mold (16), a demolding assembly and a limiting seat (19) are provided on the mold cover (18), a number of limiting posts (21) are provided below the limiting seat (19), a number of through holes are opened on the mold cover (18), a number of fixing holes (22) are opened on the outer mold (16), and the limiting posts (21) pass through the through holes and are fitted into the fixing holes (22).

2. The six-lobed, inner circular snap-fit ​​injection mold according to claim 1, characterized in that: The inner mold assembly includes multiple sets of first petal blocks (23) and multiple sets of second petal blocks (24). Trapezoidal guide rails (25) are provided on both sides of the second petal blocks (24). Dovetail grooves (26) are provided on both sides of the first petal blocks (23). The trapezoidal guide rails (25) are engaged in the dovetail grooves (26) and the two are slidably connected. Multiple sets of first petal blocks (23) and multiple sets of second petal blocks (24) are distributed at intervals to form an annular inner mold.

3. The six-lobed, inner circular snap-fit ​​injection mold according to claim 2, characterized in that: The inner mold assembly also includes multiple sets of slide rods (27). Sliding holes (28) are provided below the first petal block (23) and the second petal block (24). The top end of the slide rod (27) is locked in the sliding hole (28). The bottom end of the slide rod (27) is rotatably connected to the top of the slider (13). Multiple sets of limiting holes (29) and multiple sets of limiting grooves (31) are provided on the limiting plate (14). The multiple sets of limiting holes (29) and multiple sets of limiting grooves (31) are distributed at intervals. The slide rod (27) passes through the limiting holes (29) and the limiting grooves (31).

4. The six-lobed, inner circular snap-fit ​​injection mold according to claim 1, characterized in that: The demolding assembly includes a hook plate (32) and a demolding template (33). The hook plate (32) is installed above the demolding template (33), and the demolding template (33) is located below the outer mold (16). A pull plate is provided below the hook plate (32), and the pull plate is located below the demolding template (33).

5. A six-lobed, inner circular snap-fit ​​injection mold according to claim 4, characterized in that: The demolding assembly also includes a demolding cylinder (34) and a spring (35). The demolding cylinder (34) is placed upside down between the limiting seat (19) and the mold cover (18). The shaft end of the demolding cylinder (34) is connected to the top end of the mold cover (18). The bottom end of the outer mold (16) and the top end of the demolding template (33) are both provided with annular grooves (36). The spring (35) is engaged in the upper and lower sets of annular grooves (36).

6. The six-lobed, inner circular snap-fit ​​injection mold according to claim 5, characterized in that: The ejector plate (33) is provided with multiple sets of ejector rods (39), and the bottom end of the outer mold (16) is provided with multiple sets of ejector holes (38), and the ejector rods (39) are inserted into the ejector holes (38).

7. A six-lobed, inner circular snap-fit ​​injection mold according to claim 6, characterized in that: The base (11) is provided with multiple sets of optical axes (37), the template (33) is provided with multiple sets of guide holes, the outer mold (16) is provided with multiple sets of positioning holes, the optical axis (37) passes through the guide holes and the top end is locked in the positioning holes.

8. The six-lobed, inner circular snap-fit ​​injection mold according to claim 1, characterized in that: The slider (13) is slidably connected to the slot (12). The slot (12) has grooves on both sides and a pin hole on one side of the slider (13). A slide bar is inserted in the groove and passes through the pin hole.

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