IML film embedded injection molding mold cavity anti-drop structure

Abstract

The utility model discloses a kind of IML membrane piece burying injection molding model cavity anti-falling structure, including upper die and lower die, anti-unclamping machine is equipped between upper die and lower die, elastic member is equipped between anti-unclamping machine and upper die, elastic member has the tendency of driving anti-unclamping machine to move to membrane piece side, before moulding, membrane piece is prevented by anti-unclamping machine and upper die and is prevented from being matched;Anti-unclamping machine and upper die are equipped with magnetic attraction structure for fixing anti-unclamping machine and buckle reset structure for resetting between them.The utility model has the following advantages and effects: the present scheme utilizes new mechanical structure, has the effect of preventing membrane piece to be placed askew, preventing membrane piece from falling when moulding, and then reducing loss, improving production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to an IML diaphragm embedded in the injection mold cavity to prevent it from falling off. Background Technology

[0002] The development of intelligent and connected vehicles presents both new opportunities and challenges for the design of IML injection molded parts. In smart cockpits, the use of large displays and touch-sensitive control panels increases the demand for interactive interfaces. IML injection molded parts must not only meet aesthetic requirements but also possess functionality and interactivity. For example, IML injection molded buttons with integrated touch control functions require an exquisite appearance, sensitive operation, and harmony with the interior design. The widespread application of IML injection molding technology also places higher demands on quality.

[0003] A Chinese patent with publication number CN213107967U discloses an injection mold with multiple keyholes for IML process, including a panel, a manifold, an A plate, a front mold core, a diaphragm, a rear mold core, a B plate, square iron plates, an upper ejector plate, a lower ejector plate, and a base plate. The panel is mounted on the manifold, the A plate is mounted on the other side of the manifold, the front mold core is embedded in the bottom of the A plate, the B plate has a mounting groove, the rear mold core is mounted in the mounting groove, the diaphragm is disposed between the front and rear mold cores and pressed together by the A plate, two square iron plates are provided, the upper and lower ends of the two square iron plates are fixedly connected to the B plate and the base plate respectively, the upper ejector plate is disposed on the lower ejector plate, and the lower ejector plate is fixedly mounted on the base plate.

[0004] However, the above-mentioned multi-button injection mold for IML process has the following disadvantages: the diaphragm may fall off when the mold is closed, which will lead to increased costs and reduced production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a structure for embedding an IML diaphragm into the injection molding cavity to prevent it from falling off, thus achieving the effect of preventing the diaphragm from detaching.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: an IML diaphragm embedded in an injection molding mold cavity to prevent it from falling out, including an upper mold and a lower mold. The upper mold has a mold cavity, and a diaphragm is provided in the mold cavity. The diaphragm is positioned and engaged with the mold cavity. An anti-disengagement mechanism is provided between the upper mold and the lower mold. An elastic element is provided between the anti-disengagement mechanism and the upper mold. The elastic element has a tendency to drive the anti-disengagement mechanism to move towards the diaphragm. Before mold closing, the diaphragm is anti-disengaged by the anti-disengagement mechanism and the upper mold. A magnetic attraction structure for fixing the anti-disengagement mechanism and a mechanism reset structure for resetting are provided between the anti-disengagement mechanism and the upper mold.

[0007] By adopting the above technical solution, the user positions and installs the diaphragm in the upper mold. Positioning via the mold cavity reduces problems such as misaligned diaphragms and reverse adhesive caused by lack of positioning, improving diaphragm installation efficiency. The diaphragm is secured between the anti-disengagement machine and the mold cavity, preventing it from falling off. Before mold closing, the elastic element pushes the anti-disengagement machine towards one side of the diaphragm to prevent it from falling off. During mold closing, the anti-disengagement machine squeezes the elastic element, gradually moving it away from the diaphragm. Finally, the anti-disengagement machine is fixed by a magnetic structure. After mold opening, the injection-molded diaphragm is removed, and a new diaphragm to be injection-molded is placed in. The anti-disengagement machine resets via the machine reset structure. Simultaneously, under the action of the elastic element, the anti-disengagement machine cooperates with the new diaphragm to prevent detachment, improving operational convenience.

[0008] A further feature of this invention is that the anti-detachment machine includes a first anti-detachment protrusion, and the diaphragm engages with the upper mold through the first anti-detachment protrusion to prevent detachment.

[0009] By adopting the above technical solution, in the mold-open state, the diaphragm is installed between the first anti-detachment protrusion and the upper mold, and the anti-detachment protrusion prevents the diaphragm from falling off.

[0010] A further feature of this invention is that the upper mold has a first sliding groove for mounting the anti-disengagement machine, and the anti-disengagement machine and the first sliding groove are slidably engaged.

[0011] By adopting the above technical solution, the anti-disengagement machine can slide along the first sliding groove. When the mold is closed, the anti-disengagement machine moves away from the diaphragm along the first sliding groove. After the mold is opened, the anti-disengagement machine moves closer to the diaphragm along the first sliding groove, thereby improving the ease of operation of the anti-disengagement machine.

[0012] A further feature of this invention is that the elastic element includes a spring, and the anti-disengagement machine has an installation groove for installing the spring. The two ends of the spring are respectively fixedly connected to the first sliding groove and the installation groove, and the spring has a tendency to drive the anti-disengagement machine to move towards the diaphragm side.

[0013] By adopting the above technical solution, in the mold-open state, under the action of the spring in the mounting groove, the anti-disengagement machine moves to the side closer to the mold cavity so that the anti-disengagement machine can cooperate with the diaphragm to prevent disengagement. When the mold is closed, the lower mold applies a force to the anti-disengagement machine, forcing the anti-disengagement machine to move to the side away from the mold cavity, so that the anti-disengagement machine returns to a safe distance.

[0014] A further feature of this invention is that the lower mold is provided with a guide groove, and the first anti-detachment protrusion is provided with a corresponding guide slope. When the upper mold and the lower mold are combined, the anti-detachment mechanism is guided and engaged by the guide slope and the guide groove.

[0015] By adopting the above technical solution, a guide groove is provided at the lower mold corresponding to the anti-disengagement machine. When the mold is closed, the guide slope of the first anti-disengagement protrusion is attached to the side of the guide groove near the mold cavity. During the merging of the upper and lower molds, the anti-disengagement machine slides outward under the guiding action of the guide groove. When the upper and lower molds are completely merged, the anti-disengagement machine is placed in the guide groove, which facilitates the closure of the upper and lower molds and prevents the anti-disengagement machine from interfering with the mold closure.

[0016] A further feature of this invention is that the anti-disengagement mechanism includes a second anti-disengagement protrusion, a pressure block is provided in the first sliding groove, the second anti-disengagement protrusion is engaged between the first sliding groove and the pressure block, the pressure block is fixedly connected in the first sliding groove, and the anti-disengagement mechanism cooperates with the pressure block to prevent disengagement through the second anti-disengagement protrusion.

[0017] By adopting the above technical solution, the pressure block covers the second anti-disengagement protrusion of the anti-disengagement machine, restricting the vertical displacement of the anti-disengagement machine and preventing the anti-disengagement machine from disengaging from the first sliding groove when the mold is in use.

[0018] A further feature of this invention is that the magnetic attraction structure includes magnetic attraction contacts and a magnet, the magnet is embedded in the upper mold, and the anti-disengagement machine has magnetic attraction contacts corresponding to the magnet. When the mold is closed, the magnet and the magnetic attraction contacts magnetically engage.

[0019] By adopting the above technical solution, when the mold is closed, under the squeezing action of the upper and lower molds, the anti-disengagement machine moves along the sliding groove to the side away from the diaphragm. When the upper and lower molds are completely closed, the spring is compressed, and at the same time, the anti-disengagement machine is magnetically attracted to the magnet through the magnetic contact, which facilitates the fixation of the anti-disengagement machine after the mold is closed.

[0020] A further feature of this invention is that the latching reset structure includes a reset rod, the upper mold has a second sliding groove for mounting the reset rod, the magnet is annular in shape, and when the mold is closed, the reset rod passes through the magnet and abuts against the magnetic contact point.

[0021] By adopting the above technical solution, when the mold is closed, the anti-disengagement machine moves to the side of the magnet and pushes the reset rod to move to the outside of the upper mold. When the upper and lower molds are completely closed, the end of the reset rod away from the magnet protrudes outward, thereby indicating the closing status of the mold to the operator, and has the function of indicating the mold closure.

[0022] A further feature of this invention is that the reset rod includes an operating part, the operating part is provided with a limiting protrusion, the upper mold is correspondingly provided with a limiting groove, and the limiting protrusion and the limiting groove are mutually limiting.

[0023] By adopting the above technical solution, when the mold is opened, the anti-disengagement machine is magnetically attracted to the side of the sliding groove away from the diaphragm under the action of the magnet. After the new diaphragm to be injected is installed, the operating part of the reset rod is pressed to make the limiting protrusion of the operating part abut against the limiting groove again. At this time, the reset rod passes through the magnet, separating the magnet from the magnetic attraction point, so that the anti-disengagement machine re-cooperates with the diaphragm to prevent disengagement. This improves the ease of operation after the upper and lower molds are opened and facilitates the reset of the anti-disengagement machine.

[0024] A further feature of this invention is that the upper mold is provided with a guide rib, the lower mold is provided with an injection channel, and the injection channel is provided with a corresponding guide recess. The upper mold and the lower mold are positioned and guided by the guide rib and the guide recess.

[0025] By adopting the above technical solution, the positioning and cooperation of the guide ribs and guide recesses ensure that the injection channel fits snugly with the upper mold during mold closing, thereby improving the mold's sealing performance, preventing material leakage from the injection channel, and improving injection molding quality.

[0026] In summary, this utility model has the following beneficial effects:

[0027] 1. An anti-disengagement machine installed on the upper mold is used to prevent the diaphragm from being placed crookedly and to prevent the diaphragm from falling off when the mold is closed.

[0028] 2. By using a spring between the anti-disengagement machine and the upper mold, the anti-disengagement machine can move along the sliding groove, which has the effect of preventing the anti-disengagement machine from interfering with the mold closing when the mold is closed.

[0029] 3. It adopts a snap-lock reset structure, which has a mold closing indication and facilitates the snap-lock reset after the mold is opened. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall design of this utility model.

[0031] Figure 2 This is a cross-sectional view of the present invention.

[0032] Figure 3 This is a schematic diagram of the lower mold.

[0033] Figure 4 This is an exploded view of the anti-disengagement mechanism in the upper mold.

[0034] Figure 5 This is a schematic diagram of the locking and resetting structure when the mold is closed.

[0035] Figure 6 This is a schematic diagram of the locking and resetting structure when the mold is opened.

[0036] Figure 7 yes Figure 2 A magnified view of a portion of point A in the middle.

[0037] In the diagram: 1. Upper mold; 11. Mold cavity; 12. First sliding groove; 121. Pressure block; 13. Guide rib; 14. Second sliding groove; 15. Limiting groove; 2. Lower mold; 21. Injection channel; 22. Guide recess; 23. Guide groove; 3. Anti-disengagement mechanism; 31. First anti-disengagement protrusion; 32. Mounting groove; 33. Guide slope; 34. Second anti-disengagement protrusion; 4. Spring; 5. Magnetic attraction structure; 51. Magnetic contact; 52. Magnet; 6. Clamping mechanism reset structure; 61. Reset rod; 611. Operating part; 612. Limiting protrusion. Detailed Implementation

[0038] The present invention will be further described below with reference to the accompanying drawings.

[0039] An IML diaphragm embedding structure to prevent it from falling out of the injection molding mold cavity, such as... Figure 1 , 2 As shown, the device includes an upper mold 1 and a lower mold 2. The upper mold 1 has a cavity 11 for mounting the diaphragm. The diaphragm is positioned and fitted with the cavity 11, reducing the problem of the diaphragm being misaligned due to lack of positioning. An anti-disengagement mechanism 3 is provided between the upper mold 1 and the lower mold 2. An elastic element is provided between the anti-disengagement mechanism 3 and the upper mold 1. The elastic element has the tendency to drive the anti-disengagement mechanism 3 to move towards the diaphragm. Before the mold is closed, the diaphragm is anti-disengaged and fitted with the upper mold 1 by the anti-disengagement mechanism 3. When the mold is closed, the upper mold 1 and the lower mold 2 are squeezed together, forcing the anti-disengagement mechanism 3 to move away from the diaphragm. At the same time, the spring 4 is compressed. A mechanism reset structure 6 is provided between the anti-disengagement mechanism 3 and the upper mold 1 for resetting. After the mold is opened, the diaphragm is reinstalled, and the mechanism is moved towards the diaphragm by the mechanism reset structure 6. At the same time, the spring 4 returns to its original position, so that the anti-disengagement mechanism 3 and the diaphragm are anti-disengaged and fitted together.

[0040] like Figure 1-4As shown, in this embodiment, the upper mold 1 has a first sliding groove 12 for mounting the anti-disengagement mechanism 3, and the anti-disengagement mechanism 3 has an mounting groove 32 for mounting the spring 4. The anti-disengagement mechanism 3 and the first sliding groove 12 are slidably engaged. Under the action of the spring 4, when the mold is closed, the anti-disengagement mechanism 3 moves away from the diaphragm along the first sliding groove 12. After the mold is opened, the anti-disengagement mechanism 3 moves closer to the diaphragm along the first sliding groove 12, improving the ease of operation of the anti-disengagement mechanism 3. The anti-disengagement mechanism 3 includes a first anti-disengagement protrusion 31. The diaphragm is anti-disengaged with the upper mold 1 through the first anti-disengagement protrusion 31. Before the mold is closed, under the action of the elastic element, the mechanism moves closer to the diaphragm. At this time, the diaphragm is installed between the first anti-disengagement protrusion 31 and the upper mold 1. The first anti-disengagement protrusion 31 blocks the lower side of the diaphragm to prevent the diaphragm from falling off. The lower mold 2 has a guide groove 23, and the first anti-disengagement protrusion 31 is correspondingly provided with a guide slope 33. When the mold is closed, the guide slope 33 of the first anti-disengagement protrusion 31 is... 3 is attached to the side of the guide groove 23 near the mold cavity 11. During the merging of the upper mold 1 and the lower mold 2, the anti-disengagement mechanism 3 slides outward under the guidance of the guide groove 23. When the upper mold 1 and the lower mold 2 are completely merged, the anti-disengagement mechanism 3 is placed in the guide groove 23, which facilitates the closure of the upper and lower molds 2 and prevents the anti-disengagement mechanism 3 from interfering with the mold closure. The anti-disengagement mechanism 3 is provided with a second anti-disengagement protrusion 34 to prevent the anti-disengagement mechanism 3 from falling off. When the anti-disengagement mechanism 3 is installed, the pressure block 121 presses on the second anti-disengagement protrusion 34 and is fixed in the first sliding groove 12 by bolts to limit the vertical displacement of the anti-disengagement mechanism 3. In addition, the upper mold 1 is provided with a guide rib 13, and the lower mold 2 is provided with an injection channel 21. The injection channel 21 is provided with a corresponding guide recess 22. When the upper mold 1 and the lower mold 2 are closed, the guide rib 13 and the guide recess 22 provide positioning and guidance, improve the sealing of the mold, prevent material leakage from the injection channel 21, and thus improve the injection quality.

[0041] like Figure 2 , 4 As shown in Figures 7 and 8, in this embodiment, the magnetic attraction structure 5 includes a magnetic attraction contact 51 and a magnet 52. The magnet 52 is embedded in the upper mold 1, and the magnetic attraction contact 51 is correspondingly disposed on the anti-disengagement machine 3. The material of the magnetic attraction contact 51 is a ferromagnetic metal such as iron, cobalt, and nickel. When the mold is closed, the anti-disengagement machine 3 moves away from the diaphragm along the first sliding groove 12. After the mold is closed, the magnetic attraction contact 51 is magnetically attracted to the magnet 52, which facilitates the fixation of the anti-disengagement machine 3 and prevents the anti-disengagement machine 3 from immediately resetting after the mold is opened, making it easier to install a new diaphragm for the next round of injection molding. In other embodiments, by setting the magnet 52 on the anti-disengagement machine 3 and embedding the magnetic attraction contact 51 in the upper mold 1, or by setting the magnet 52 on both the anti-disengagement machine 3 and the upper mold 1, the same effect of fixing the anti-disengagement machine 3 can be achieved.

[0042] like Figure 5 , 6As shown in Figures 7 and 8, in this embodiment, a latching reset structure 6 is provided between the anti-disengagement machine 3 and the upper mold 1. The latching reset structure 6 includes a reset rod 61. The upper mold 1 has a second sliding groove 14 for the reset rod 61 to slide. The magnet 52 is annular in shape. The reset rod 61 passes through the magnet 52. During the mold closing process, the magnetic contact 51 abuts against the reset rod 61 and is pushed outward by the anti-disengagement machine 3 until the magnetic contact 51 is magnetically attracted to the magnet 52. At this time, the operating part 61 of the reset rod 61 is activated. 1. The upper mold 1 protrudes outward to indicate the closed state of the upper and lower molds when the mold is closed. After the mold is opened, the diaphragm is installed first. After the diaphragm is installed, the operating part 611 of the reset rod 61 is pressed to make the limiting protrusion 612 of the operating part 611 abut against the limiting groove 15 again. At this time, the reset rod 61 passes through the magnet 52 and separates the magnet 52 from the magnetic contact 51, so that the anti-disengagement machine 3 re-engages with the diaphragm to prevent disengagement. This improves the ease of operation after the upper mold 1 and lower mold 2 are opened and facilitates the reset of the anti-disengagement machine 3.

[0043] The basic working principle of this utility model is as follows: Before mold closing, the anti-disengagement machine 3 has a tendency to move towards the diaphragm side under the action of the elastic element, so that the diaphragm is stuck between the anti-disengagement machine 3 and the upper mold 1 to prevent the diaphragm from falling off. When the mold is closed, the mold squeezes the anti-disengagement machine 3, so that the anti-disengagement machine 3 moves away from the diaphragm along the first sliding groove 12 and is fixed by the magnetic attraction structure 5. When the mold is opened, the anti-disengagement machine 3 will not immediately reset. After the diaphragm is installed, it is reset by the machine reset structure 6 to prevent the anti-disengagement machine 3 from interfering with the installation of the new diaphragm, and at the same time facilitates the reset of the anti-disengagement machine 3.

[0044] The above description is only a preferred embodiment of the present utility model. Therefore, all equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A structure for preventing the IML diaphragm from falling out of an injection molding mold cavity, comprising an upper mold (1) and a lower mold (2), characterized in that: The upper mold (1) has a mold cavity (11). An anti-disengagement mechanism (3) is provided between the upper mold (1) and the lower mold (2). An elastic element is provided between the anti-disengagement mechanism (3) and the upper mold (1). The elastic element has the tendency to drive the anti-disengagement mechanism (3) to move towards the diaphragm. Before the mold is closed, the diaphragm is anti-disengaged by the anti-disengagement mechanism (3) and the upper mold (1). A magnetic attraction structure (5) for fixing the anti-disengagement mechanism (3) and a mechanism reset structure (6) for resetting are provided between the anti-disengagement mechanism (3) and the upper mold (1).

2. The IML diaphragm embedding anti-fall-off structure in the injection molding mold cavity according to claim 1, characterized in that: The anti-detachment machine (3) includes a first anti-detachment protrusion (31). In the open mold state, the diaphragm is anti-detached from the upper mold (1) through the first anti-detachment protrusion (31).

3. The IML diaphragm embedding anti-fall-off structure in the injection molding mold cavity according to claim 1, characterized in that: The upper mold (1) has a first sliding groove (12) for the installation of the anti-disengagement machine (3), and the anti-disengagement machine (3) and the first sliding groove (12) are slidably engaged.

4. The IML diaphragm embedding anti-fall-off structure in the injection molding mold cavity according to claim 1, characterized in that: The elastic element is a spring (4), and the anti-disengagement machine (3) has an installation groove (32) for installing the spring (4). The two ends of the spring (4) are fixedly connected to the first sliding groove (12) and the installation groove (32) respectively. The spring (4) has a tendency to drive the anti-disengagement machine (3) to move towards the diaphragm.

5. The IML diaphragm embedding anti-fall-off structure in the injection molding mold cavity according to claim 1, characterized in that: The lower mold (2) is provided with a guide groove (23), and the anti-disengagement machine (3) is provided with a corresponding guide slope (33). The anti-disengagement machine (3) is guided and cooperated with the guide groove (23) through the guide slope (33).

6. The IML diaphragm embedding anti-fall-off structure in the injection molding mold cavity according to claim 1, characterized in that: The anti-disengagement machine (3) includes a second anti-disengagement protrusion (34), and a pressure block (121) is provided in the first sliding groove (12). The second anti-disengagement protrusion (34) is inserted between the first sliding groove (12) and the pressure block (121). The pressure block (121) is fixedly connected in the first sliding groove (12). The anti-disengagement machine (3) is anti-disengaged by the second anti-disengagement protrusion (34) and the pressure block (121).

7. The IML diaphragm embedding anti-fall-off structure in the injection molding mold cavity according to claim 1, characterized in that: The magnetic attraction structure (5) includes a magnetic attraction contact (51) and a magnet (52). The magnet (52) is embedded in the upper mold (1). The anti-disengagement machine (3) has a magnetic attraction contact (51) corresponding to the magnet (52). When the mold is closed, the magnet (52) and the magnetic attraction contact (51) magnetically engage.

8. The IML diaphragm embedding anti-fall-off structure in the injection molding mold cavity according to claim 7, characterized in that: The buckle reset structure (6) includes a reset rod (61). The upper mold (1) has a second sliding groove (14) for the reset rod (61) to be installed. The magnet (52) is ring-shaped. When the mold is closed, the reset rod (61) passes through the magnet (52) and abuts against the magnetic contact (51).

9. The IML diaphragm embedding anti-fall-off structure in the injection molding mold cavity according to claim 8, characterized in that: The reset rod (61) includes an operating part (611), the operating part (611) is provided with a limiting protrusion (612), the upper mold (1) is provided with a corresponding limiting groove (15), and the limiting protrusion (612) and the limiting groove (15) are mutually limiting.

10. The IML diaphragm embedding anti-fall-off structure in the injection molding mold cavity according to claim 1, characterized in that: The upper mold (1) is provided with guide ribs (13), and the lower mold (2) is provided with injection channel (21). The injection channel (21) is provided with guide recesses (22). The upper mold (1) and the lower mold (2) are positioned and guided by the guide ribs (13) and the guide recesses (22).

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