Injection mold with movable cavity

Abstract

The utility model discloses a movable injection mold of mould cavity relates to mould technical field, including fixed seat and movable board, the right -hand member fixed mounting of fixed seat has the locating seat, the left -hand member fixed mounting of movable board has the butt -joint block, the left side both ends symmetrical installation of butt -joint block has the limiting post, the limiting post and locating seat sliding insertion, the inside of locating seat is provided with second insertion slot, the inside movable insertion of second insertion slot has male die, the top of male die is connected with locating seat through locating installation mechanism, this movable injection mold of mould cavity is through first insertion slot, second insertion slot and the movable insertion cooperation of forming mould, male die, and the quick dismouting function of combining locating installation mechanism, when replacing the forming mould or male die required by different model injection product production, do not need to replace whole butt -joint block or locating seat, simplifyed the replacement process, improved production preparation efficiency, reduced equipment investment cost.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to an injection mold with a movable cavity. Background Technology

[0002] In the field of injection molding, injection molds are the core equipment for mass production of plastic parts. Their basic structure usually includes a fixed mold, a moving mold, and a mold cavity that forms the shape of the plastic part. However, existing injection molds still have certain defects in use.

[0003] An adjustable injection mold, as proposed in application number CN202221419323.0, includes a lower mold and a movable support assembly inside the lower mold for spatial adjustment. An electric telescopic rod is mounted on the upper surface of the lower mold, and an upper mold is mounted at the top of the electric telescopic rod. Both the lower and upper molds have cavities on one side, and the upper surface of the upper mold has an injection port. An adjusting plate, with the same length and width as the cavity, is installed inside the cavity of the lower mold. A movable mechanism between the lower surface of the adjusting plate and the bottom of the cavity allows for adjustment of the height distance between the adjusting plate and the upper surface of the cavity. This allows the mold to meet the injection molding requirements of different height models during injection molding. However, in actual use, only the "cavity height distance" can be adjusted via the adjusting plate and the movable mechanism. This only addresses changes in the height of the same product and cannot adjust the length, width, or local contour of the cavity. Therefore, it cannot produce injection molded products with different lengths and widths or irregular structures, resulting in reduced compatibility with diverse products.

[0004] Therefore, we propose an injection mold with a movable cavity to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this invention is to provide an injection mold with a movable cavity to solve the problem mentioned in the background art that it can only adjust the height of the cavity to adapt to the height changes of the same product, but cannot adjust the length and width or produce irregularly shaped injection molded products, resulting in low compatibility with diverse products.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a movable injection mold cavity, comprising a fixed base and a movable plate, wherein a positioning seat is fixedly installed at the right end of the fixed base, and a docking block is fixedly installed at the left end of the movable plate, and limit posts are symmetrically installed at both ends of the left side of the docking block, the limit posts being slidably inserted into the positioning seat, and a second insertion groove is provided inside the positioning seat, wherein a punch is movably inserted into the second insertion groove, and the top end of the punch is connected to the positioning seat through a positioning and mounting mechanism.

[0007] Preferably, the docking block has a first insertion groove inside, and a forming mold is movably inserted into the first insertion groove. The top of the forming mold is connected to the docking block through a positioning and installation mechanism.

[0008] By adopting the above-mentioned structural design, the molding mold and the docking block can be quickly assembled and disassembled through the movable insertion and cooperation of the first insertion slot with the molding mold, combined with the positioning and installation mechanism to fix the molding mold. When different models of injection molded products need to be produced, only the appropriate molding mold needs to be replaced to adjust the molding cavity, without replacing the entire docking block. This effectively improves the versatility of the mold, reduces equipment investment costs, simplifies the replacement operation process, and improves production preparation efficiency.

[0009] Preferably, the positioning and mounting mechanism includes a limiting groove formed on the top of the forming mold and the punch, a positioning plate is fixedly installed on the top inner side of the limiting groove, an adjusting screw is threaded through the internal thread of the positioning plate, a linkage block is rotatably connected to the bottom end of the adjusting screw, a positioning rod is symmetrically installed on the top surface of the linkage block, and the positioning rod is slidably connected to the positioning plate.

[0010] Preferably, the positioning and installation mechanism further includes sliders symmetrically installed on the bottom surface of the linkage block. A snap-fit ​​block is sleeved on the slider. A connecting groove is symmetrically opened on the top of the snap-fit ​​block. The snap-fit ​​block is slidably connected to the slider through the connecting groove. A snap-fit ​​groove is opened on the top of the positioning seat and the docking block. The snap-fit ​​groove is movably engaged with the snap-fit ​​block.

[0011] With the above-described structure, the positioning and installation mechanism drives the linkage block to rise and fall by adjusting the rotation of the screw. The positioning rod provides precise guidance for the movement of the linkage block, preventing it from shifting. The linkage block, through the sliding cooperation between the slider and the locking block, drives the locking block to engage or disengage with the locking grooves on the positioning seat and the mating block, thereby quickly completing the stable fixing or disassembly of the punch and the positioning seat, and the molding mold and the mating block. This structure not only ensures the stability of the punch and the molding mold after installation and ensures the stability of the injection molded product's dimensions, but also greatly simplifies the disassembly and assembly operations, facilitating the later maintenance and replacement of the mold.

[0012] Preferably, the mating block has a forming cavity inside, and an adjusting plate is slidably connected to the inner ring of the forming cavity. A control rod is fixedly installed on the right side of the adjusting plate, and the control rod is slidably connected to the mating block and the movable plate.

[0013] With the above-mentioned structural design, the molding cavity provides molding space for injection molded products. The sliding fit between the adjusting plate and the molding cavity allows the adjusting plate to move axially along the molding cavity via a control rod, thereby changing the effective molding volume of the molding cavity. This design enables the mold to adapt to the production needs of injection molded products of different sizes and specifications, eliminating the need to design a separate mold for each size, enhancing the mold's adaptability and expanding its application range.

[0014] Preferably, the right end of the control lever is provided with slots at equal intervals, a fixed plate is fixedly installed on the right side of the movable plate, a lifting screw runs through the inside of the fixed plate, the bottom end of the lifting screw is rotatably connected to a card seat, and the bottom end of the card seat is movably engaged with the slot.

[0015] The above-described structure allows the mounting plate to be raised or lowered by rotating the lifting screw, which engages with slots at different positions on the control rod, thus fixing the adjustment plate in the desired position. This structure effectively prevents the adjustment plate from shifting due to external forces during the injection molding process, ensuring the stability of the molding cavity dimensions and the molding stability of the injection molded product. Furthermore, the equidistant spacing of the slots and the adjustment method of the lifting screw make the adjustment of the adjustment plate position convenient and reliable, improving the ease of mold operation.

[0016] Compared with the prior art, the beneficial effects of this utility model are: the injection mold with a movable cavity;

[0017] 1. By using the first and second insertion slots to engage with the molding die and punch, and combined with the quick disassembly and assembly function of the positioning and installation mechanism, when changing the molding die or punch required for the production of different models of injection molded products, it is not necessary to replace the entire docking block or positioning seat, which simplifies the replacement process, improves production preparation efficiency, and reduces equipment investment costs.

[0018] Simultaneously, the sliding fit between the adjustment plate and the molding cavity, as well as the adjustment function of the control rod, can change the effective volume of the molding cavity, adapt to the production needs of injection molded products of different sizes and specifications, and expand the application range of the mold.

[0019] 2. The positioning and installation mechanism drives the linkage block through the adjustment screw, and cooperates with the positioning rod guide and the sliding connection between the slider and the locking block to make the punch and forming mold securely installed, ensuring stable molding dimensions. The slot of the control rod engages with the locking seat driven by the lifting screw, which can reliably fix the adjustment plate, prevent the adjustment plate from shifting during injection molding, ensure product molding stability, facilitate the maintenance and replacement of the mold in the later stage, and improve the overall operation convenience. Attached Figure Description

[0020] Figure 1 This is a side view of the appearance structure of an embodiment of the present utility model;

[0021] Figure 2 This is an exploded structural diagram of the positioning seat and docking block with the forming mold and punch of this utility model;

[0022] Figure 3 This is a schematic diagram of the connection structure between the punch side section and the positioning and mounting mechanism of this utility model;

[0023] Figure 4This is a side sectional exploded view of the positioning and installation mechanism of this utility model;

[0024] Figure 5 This is a side view of the appearance structure of Embodiment 2 of this utility model;

[0025] Figure 6 This is a side sectional view of the movable plate and the docking block in Embodiment 2 of this utility model;

[0026] Figure 7 This is a schematic diagram of the connection structure between the control rod and the card seat in Embodiment 2 of this utility model.

[0027] In the diagram: 1. Fixed seat; 2. Positioning seat; 3. Movable plate; 4. Connecting block; 5. First insertion slot; 6. Forming mold; 7. Second insertion slot; 8. Punch; 9. Limiting slot; 10. Positioning plate; 11. Adjusting screw; 12. Linkage block; 13. Positioning rod; 14. Slider; 15. Snap-fit ​​block; 16. Connecting slot; 17. Forming cavity; 18. Adjusting plate; 19. Control rod; 20. Snap-fit ​​slot; 21. Fixed plate; 22. Lifting screw; 23. Snap-fit ​​seat; 24. Limiting post. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1: Please refer to Figure 1 - Figure 4 This utility model provides a technical solution: a movable injection mold cavity, including a fixed base 1 and a movable plate 3. A positioning base 2 is fixedly installed on the right end of the fixed base 1, and a docking block 4 is fixedly installed on the left end of the movable plate 3. Limiting posts 24 are symmetrically installed on both ends of the left side of the docking block 4. The limiting posts 24 are slidably inserted into the positioning base 2. A second insertion groove 7 is opened inside the positioning base 2. A punch 8 is movably inserted into the second insertion groove 7. The top end of the punch 8 is connected to the positioning base 2 through a positioning and installation mechanism. A first insertion groove 5 is opened inside the docking block 4. A forming mold 6 is movably inserted into the first insertion groove 5. The top end of the forming mold 6 is connected to the docking block 4 through a positioning and installation mechanism.

[0030] In the above structure design, the fixed seat 1 provides stable support for the mold as a whole, and the positioning seat 2 fixed at its right end is the mounting carrier of the punch 8. The second insertion groove 7 inside the positioning seat 2 provides initial installation positioning for the punch 8, so that the punch 8 can be quickly embedded and connected to the positioning seat 2 through the positioning and mounting mechanism.

[0031] The movable plate 3 is a moving part, and the docking block 4 fixed at its left end is used to install the molding mold 6. The first insertion groove 5 inside the docking block 4 provides initial positioning for the molding mold 6. The molding mold 6 is also firmly connected to the docking block 4 through the positioning and installation mechanism.

[0032] When the mold is closed, the movable plate 3 moves the docking block 4 closer to the positioning seat 2. The limiting posts 24 at both ends of the left side of the docking block 4 slide into the positioning seat 2. The sliding cooperation between the two guides the movement of the docking block 4, ensuring that the docking block 4 and the positioning seat 2 are accurately aligned. This allows the molding mold 6 and the punch 8 to accurately fit together to form a closed mold cavity for injection molding. When the mold is opened, the movable plate 3 moves the docking block 4 away from the positioning seat 2. The limiting posts 24 slide out of the positioning seat 2 synchronously with the docking block 4. The molding mold 6 and the punch 8 separate, making it easy to remove the molded product.

[0033] The positioning and installation mechanism includes a limiting groove 9 opened on the top of the forming mold 6 and the punch 8. A positioning plate 10 is fixedly installed on the top inner side of the limiting groove 9. An adjusting screw 11 passes through the internal thread of the positioning plate 10. A linkage block 12 is rotatably connected to the bottom end of the adjusting screw 11. A positioning rod 13 is symmetrically installed on the top surface of the linkage block 12. The positioning rod 13 is slidably connected to the positioning plate 10. The installation mechanism also includes a slider 14 symmetrically installed on the bottom surface of the linkage block 12. A snap-fit ​​block 15 is sleeved on the slider 14. A connecting groove 16 is symmetrically opened on the top of the snap-fit ​​block 15. The snap-fit ​​block 15 is slidably connected to the slider 14 through the connecting groove 16. A snap-fit ​​groove is opened on the top of the positioning seat 2 and the docking block 4. The snap-fit ​​groove is movably engaged with the snap-fit ​​block 15.

[0034] In the above structural design, the limiting groove 9 on the top of the forming mold 6 and the punch 8 provides a space for the mounting components. The positioning plate 10 on the top inner side of the limiting groove 9 is the mounting base for the adjusting screw 11. The adjusting screw 11 is threaded through the positioning plate 10 and its bottom end is rotatably connected to the linkage block 12. The positioning rod 13 on the top surface of the linkage block 12 slides through the positioning plate 10. When the adjusting screw 11 is rotated, the positioning rod 13 restricts the linkage block 12 from rotating with the screw and allows it to move up and down only along the direction of the positioning rod 13. The slider 14 on the bottom surface of the linkage block 12 slides into the connecting groove 16 on the top of the snap-fit ​​block 15, allowing the snap-fit ​​block 15 to move laterally as the linkage block 12 rises and falls. The snap-fit ​​grooves on the top of the positioning seat 2 and the docking block 4 are adapted to the snap-fit ​​block 15. When the linkage block 12 descends, the snap-fit ​​block 15 moves outward and engages with the snap-fit ​​groove, fixing the forming mold 6 or the punch 8. When the linkage block 12 rises, it drives the snap-fit ​​block 15 to move inward. At this time, the snap-fit ​​block 15 disengages from the snap-fit ​​groove, and the fixation can be released.

[0035] Example 2: Based on Example 1, this utility model adopts the following... Figure 5 - Figure 7The technical solution shown further discloses that the mating block 4 has a forming cavity 17 inside, the inner ring of the forming cavity 17 is slidably connected to an adjusting plate 18, the right side of the adjusting plate 18 is fixedly installed with a control rod 19, the control rod 19 is slidably connected to the mating block 4 and the movable plate 3, the right end of the control rod 19 is provided with slots 20 at equal intervals, the right side of the movable plate 3 is fixedly installed with a fixing plate 21, the inside of the fixing plate 21 is through a lifting screw 22, the bottom end of the lifting screw 22 is rotatably connected to a card seat 23, and the bottom end of the card seat 23 is movably engaged with the card slot 20.

[0036] In the above structural design, the molding cavity 17 inside the docking block 4 is the main space for injection molding of products. The adjusting plate 18, which is slidably connected to the inner ring of the molding cavity 17, can change the effective volume or local structure of the molding cavity 17 by moving its position to adapt to the needs of products of different sizes. The control rod 19 fixed on the right side of the adjusting plate 18 passes through the docking block 4 and the movable plate 3 and is slidably connected to them. By pushing and pulling the control rod 19, the adjusting plate 18 can be driven to slide stably in the molding cavity 17 to adjust the size of the molding cavity 17. When adjusted to the required size, the fixing plate 21 fixed on the right side of the movable plate 3 provides installation support for the lifting screw 22. Rotating the lifting screw 22... 2. The bottom of the control rod 19 can rotate and connect the base 23 to the lower part, so that the bottom of the base 23 can engage with the slots 20 that are equally spaced on the right end of the control rod 19. This fixes the control rod 19 and the adjustment plate 18 in the current position, preventing the adjustment plate 18 from moving due to force during the injection molding process and causing changes in the size of the molding cavity 17, thus ensuring the molding accuracy of the product. If adjustment is required again, the lifting screw 22 is rotated in the opposite direction to disengage the base 23 from the slots 20, and the position of the adjustment plate 18 can be readjusted by the control rod 19. Compared with the first embodiment, multiple sizes can be adapted with one set of adjustment structure, without the need to prepare multiple sets of mold components, which can reduce the manufacturing cost of the mold.

[0037] This completes a series of tasks. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0038] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A movable injection mold cavity, comprising a fixed base (1) and a movable plate (3), characterized in that: A positioning seat (2) is fixedly installed on the right end of the fixed seat (1), and a docking block (4) is fixedly installed on the left end of the movable plate (3). Limiting posts (24) are symmetrically installed on both ends of the left side of the docking block (4). The limiting posts (24) are slidably inserted into the positioning seat (2). A second insertion groove (7) is opened inside the positioning seat (2). A punch (8) is movably inserted into the second insertion groove (7). The top end of the punch (8) is connected to the positioning seat (2) through a positioning installation mechanism.

2. The injection mold with a movable cavity according to claim 1, characterized in that: The docking block (4) has a first insertion groove (5) inside, and a forming mold (6) is movably inserted into the first insertion groove (5). The top of the forming mold (6) is connected to the docking block (4) through a positioning and installation mechanism.

3. The injection mold with a movable cavity according to claim 2, characterized in that: The positioning and installation mechanism includes a limiting groove (9) opened on the top of the forming mold (6) and the punch (8). A positioning plate (10) is fixedly installed on the top inner side of the limiting groove (9). An adjusting screw (11) is threaded through the internal thread of the positioning plate (10). A linkage block (12) is rotatably connected to the bottom end of the adjusting screw (11). A positioning rod (13) is symmetrically installed on the top surface of the linkage block (12). The positioning rod (13) is slidably connected to the positioning plate (10).

4. The injection mold with a movable cavity according to claim 3, characterized in that: The positioning and installation mechanism also includes sliders (14) symmetrically installed on the bottom surface of the linkage block (12). A snap-fit ​​block (15) is sleeved on the slider (14). A connecting groove (16) is symmetrically opened on the top of the snap-fit ​​block (15). The snap-fit ​​block (15) is slidably connected to the slider (14) through the connecting groove (16). A snap-fit ​​groove is opened on the top of the positioning seat (2) and the docking block (4). The snap-fit ​​groove is movably engaged with the snap-fit ​​block (15).

5. The injection mold with a movable cavity according to claim 1, characterized in that: The mating block (4) has a forming cavity (17) inside. An adjusting plate (18) is slidably connected to the inner ring of the forming cavity (17). A control rod (19) is fixedly installed on the right side of the adjusting plate (18). The control rod (19) is slidably connected to the mating block (4) and the movable plate (3).

6. The injection mold with a movable cavity according to claim 5, characterized in that: The right end of the control lever (19) is provided with slots (20) at equal intervals. The right side of the movable plate (3) is fixedly installed with a fixing plate (21). A lifting screw (22) runs through the inside of the fixing plate (21). The bottom end of the lifting screw (22) is rotatably connected to a card seat (23). The bottom end of the card seat (23) is movably engaged with the slot (20).

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