Mould fitting adjustment device, mould closing mechanism and moulding machine during mould closing

Abstract

The present application provides a mold fit adjustment device during mold closing, a mold closing mechanism, and a molding machine. The mold fit adjustment device during mold closing includes a first plate and a second plate that are movably spaced apart. A first annular portion is provided on the side of the first plate facing the second plate, and a second annular portion is provided on the side of the second plate facing the first plate. The first annular portion and the second annular portion are gap-assembled. A flexible member that elastically connects the first plate and the second plate is provided in the gap between the first annular portion and the second annular portion. A first elastic medium is provided in the gap between the first annular portion and the second annular portion. The first plate and the second plate are provided with a limiter that limits the travel of the separation movement of the first plate and the second plate. The mold fit adjustment device during mold closing can tightly fit the opposing surfaces of the first and second mold halves of the mold, thereby ensuring the quality of the molded product, preventing inaccurate product dimensions and product glue overflow, providing convenience for product inspection and post-processing, and ensuring smooth production.

Description

Technical Field

[0001] The present application belongs to the technical field of mold auxiliary adjustment equipment, and more specifically, relates to a mold fit adjustment device, a mold clamping mechanism and a molding machine during mold clamping. Background Art

[0002] During the injection molding or hot pressing process, the two halves of the mold are combined to form a closed cavity, and molten hot glue is injected into the cavity for pressure-holding molding, or refined silicone raw materials are placed in the cavity for hot pressing to form a product corresponding to the shape of the cavity. Therefore, the accuracy of the cavity formed by the two halves of the mold (the first half and the second half, or the upper half and the lower half) directly affects the molding accuracy of the product. The accuracy of the cavity formed by the mold is limited by the processing accuracy of the mold on the one hand; on the other hand, it is limited by the matching accuracy of the two halves of the mold.

[0003] Whether the two halves of the mold fit tightly together during mold closing not only affects the dimensional accuracy of the finished product, but also the presence and size of flash (also known as burrs or burrs). Therefore, failure to ensure tight fit between the two halves of the mold, or to ensure a tight fit and smooth fit between the two halves during mold closing, will inevitably lead to inaccurate product dimensions and flash, creating various problems for product inspection and post-processing.

[0004] During the product molding process, since the two halves of the mold are usually fixed on two separately set mold fixing plates of the machine tool's mold clamping mechanism, the two halves cannot be adjusted in relative position and are driven by the mold clamping mechanism to open and close the mold. Whether the opposing surfaces of the two halves of the mold can fit tightly during mold clamping, or whether the fit is flat, is affected not only by factors such as thermal expansion and stress of the mold and product materials, but also by many other factors such as the flatness of the two mold fixing plates on the mold clamping mechanism and the accuracy of the mold clamping mechanism's alignment.

[0005] Although the guide structure on the mold can overcome to a certain extent the problem that the opposing surfaces of the two half molds cannot fit smoothly due to the flatness of the mold fixing plate and the accuracy of the mold clamping mechanism, as production continues, the guide structure of the mold will wear and deform. At the same time, it is affected by many factors such as the temperature and humidity of the environment during the production process and the horizontality of the machine tool installation. As a result, the opposing surfaces of the two half molds cannot fit tightly during the mold clamping process. This phenomenon not only occurs very frequently, but also has great uncertainty and cannot be well resolved, which seriously affects the molding accuracy of the product and the smooth progress of production. Summary of the Invention

[0006] The purpose of the embodiments of the present application is to provide a mold fit adjustment device, a mold clamping mechanism and a molding machine during mold clamping, so as to solve the technical problem in the prior art that the relative surfaces of the two half molds are not tightly fitted during mold clamping.

[0007] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a mold fit adjustment device during mold closing, comprising a first plate and a second plate movably arranged at intervals, a first annular portion is provided on the side of the first plate facing the second plate, a second annular portion is provided on the side of the second plate facing the first plate, the first annular portion and the second annular portion are gap-assembled, a flexible member that elastically connects the first plate and the second plate is provided in the gap between the first annular portion and the second annular portion, a first elastic medium for floatingly connecting the first plate and the second plate is provided in the gap between the first annular portion and the second annular portion, and a limiting member is provided on the first plate and the second plate for limiting the stroke of the separation movement of the first plate and the second plate.

[0008] In one embodiment, the first annular portion is a convex ring, the second annular portion is a first groove, the convex ring gap is inserted into the first groove, and the flexible member includes a first flexible sealing ring and a second flexible sealing ring, the first flexible sealing ring is sealed between the outer side wall of the convex ring and the outer groove wall of the first groove, the second flexible sealing ring is sealed between the inner side wall of the convex ring and the inner groove wall of the first groove, and the first elastic medium is provided between the top surface of the convex ring and the bottom groove wall of the first groove; or, the first annular portion is a first groove, the second annular portion is a convex ring, the convex ring gap is inserted into the first groove, and the flexible member includes a first flexible sealing ring and a second flexible sealing ring, the first flexible sealing ring is sealed between the outer side wall of the convex ring and the outer groove wall of the first groove, the second flexible sealing ring is sealed between the inner side wall of the convex ring and the inner groove wall of the first groove, and the first elastic medium is provided between the top surface of the convex ring and the bottom groove wall of the first groove.

[0009] In one embodiment, a movable ring is movably embedded on a side of the second plate facing the first plate, and the second annular portion is provided on a side of the movable ring facing the first plate.

[0010] In one embodiment, a second groove for accommodating the movable ring is provided on the side of the second plate facing the first plate, a third flexible sealing ring is provided in the gap between the outer wall of the movable ring and the outer groove wall of the second groove, a fourth flexible sealing ring is provided in the gap between the inner side wall of the movable ring and the inner groove wall of the second groove, and a second elastic medium is provided in the gap between the bottom surface of the movable ring and the bottom groove wall of the second groove.

[0011] In one embodiment, a limiting plate is provided on the side of the second plate facing the first plate, the movable ring includes a third annular portion and a fourth annular portion provided on the third annular portion and having an outer contour smaller than the outer contour of the third annular portion, the second annular portion is provided on the fourth annular portion, a limiting hole is provided on the limiting plate for the fourth annular portion to be inserted into the gap, and a fifth flexible sealing ring is provided between the outer wall of the fourth annular portion and the inner groove wall of the limiting hole.

[0012] In one embodiment, the first flexible sealing ring, the second flexible sealing ring, the third flexible sealing ring, the fourth flexible sealing ring and the fifth flexible sealing ring are all sealing rubber rings.

[0013] In one embodiment, the first elastic medium and the second elastic medium are at least one of gas, liquid or elastic solid.

[0014] In one embodiment, the limiting member is provided on the first plate and the second plate, a limiting groove is provided on the second plate, one end of the limiting member is fixed on the first plate, and the other end of the limiting member is provided with a limiting portion movable in the limiting groove, and the limiting portion and the limiting groove are limitedly matched.

[0015] The present application also provides a mold closing mechanism, comprising the mold fitting adjustment device during mold closing as described above.

[0016] The present application also relates to a molding machine, comprising the mold clamping mechanism described above.

[0017] The beneficial effects of the mold fit adjustment device, mold clamping mechanism and molding machine provided by the present application are as follows: compared with the prior art in which two half molds are fixedly connected, the mold fit adjustment device during mold clamping in the present application is used to install one of the half molds, and the mold fit adjustment device during mold clamping is elastically connected by the first plate and the second plate, and the first plate and the second plate are floatingly connected by the first annular portion, the second annular portion, the flexible member and the first elastic medium, so that the first plate and the second plate can be slightly deflected and / or offset relative to the mold clamping direction. When the two half molds are clamped, if there is an inaccurate alignment between the two half molds and they are not completely fitted (that is, there is a gap at the fitting position), one of the half molds can be deflected and / or offset to a certain extent relative to the other half mold, so that the relative surfaces of the two half molds can be adapted and tightly fitted together, thereby effectively ensuring the quality of the molded product, preventing product size inaccuracies and product glue overflow, providing convenience for product inspection and post-processing, and ensuring the smooth progress of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 This is a schematic diagram of the overall structure of the mold fit adjustment device during mold closing provided in Example 1 of the present application;

[0020] Figure 2 This is a schematic top plan view of the structure of the mold fit adjustment device during mold closing provided in Example 1 of the present application;

[0021] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;

[0022] Figure 4 This is a schematic diagram of the overall structure of the mold fit adjustment device during mold closing provided in Example 2 of the present application;

[0023] Figure 5 This is a schematic diagram of the top plan structure of the mold fit adjustment device during mold closing provided in Example 2 of the present application;

[0024] Figure 6 For the Figure 5 Cross-sectional structural diagram along line BB;

[0025] Figure 7 For the Figure 5 Cross-sectional structural diagram along the CC line;

[0026] Figure 8 for Figure 7 Enlarged view of point D in the middle;

[0027] Figure 9 This is an exploded schematic diagram of the structure of the mold fit adjustment device during mold closing provided in Example 2 of the present application from an oblique top view;

[0028] Figure 10 This is a schematic diagram of an exploded structure of the mold fit adjustment device during mold closing provided in Example 2 of the present application, viewed from above;

[0029] Figure 11 This is a schematic diagram of the oblique bottom view of the molding machine provided in Example 4 of the present application;

[0030] Figure 12 This is a schematic diagram of the oblique top view of the three-dimensional structure of the molding machine provided in Example 4 of the present application.

[0031] Among them, the reference numerals in the figures are:

[0032] 10. Device for adjusting mold fit during mold closing; 101. Through hole; 1. First plate; 11. Raised ring; 12. First flexible sealing ring; 13. Second flexible sealing ring; 14. First medium filling hole; 15. First accommodating chamber; 2. Second plate; 21. First groove; 22. Second groove; 23. Third flexible sealing ring; 24. Fourth flexible sealing ring; 25. Limiting plate; 251. Limiting hole; 26. Fifth flexible sealing ring; 27. Second medium filling hole; 28. Limiting groove; 29. ​​Second accommodating chamber; 3. Limiting member; 31. Limiting protrusion; 4. Mold closing mechanism; 41. Lifting mechanism; 42. Upper mold fixing plate; 5. First half mold; 6. Second half mold; 7. Movable ring; 71. Third annular portion; 72. Fourth annular portion; 8. Molding machine; 81. Frame; 82. Injection device. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0034] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0037] Example 1:

[0038] like Figure 1-Figure 3As shown, a mold fit adjustment device during mold closing provided by an embodiment of the present application will now be described. The mold fit adjustment device 10 during mold closing comprises a first plate 1 and a second plate 2 that are movably spaced apart. A first annular portion is provided on the side of the first plate 1 facing the second plate 2, and a second annular portion is provided on the side of the second plate 2 facing the first plate 1, and the first annular portion and the second annular portion are gap-assembled. A flexible member that elastically connects the first plate 1 and the second plate 2 is provided in the radial gap between the first annular portion and the second annular portion, and a first elastic medium is provided in the gap between the first annular portion and the second annular portion, and the first elastic medium is used to make the first plate 1 and the second plate 2 float in connection. The floating connection means that the first plate 1 and the second plate 2 can maintain a state similar to relative suspension through the first elastic medium, that is, the first plate 1 and the second plate 2 are spaced apart and maintained within a certain spacing distance. When the first plate 1 and / or the second plate 2 are squeezed or pressed by an external force, the distance between the first plate 1 and the second plate 2 becomes smaller, and at the same time the first elastic medium is compressed. After the first elastic medium is compressed, it will generate an increase in "buoyancy" / repulsive force / rebound force to prompt the first plate 1 and the second plate 2 to restore their initial suspension state / separation distance. This is the prerequisite for the first plate 1 and the second plate 2 to undergo a small relative deflection and / or offset after being compressed, and for adjusting the fit between the first half mold and the second half mold.

[0039] It should be noted that the above-mentioned "radial direction" refers to the direction perpendicular to the cooperation or separation of the first annular portion and the second annular portion, that is, perpendicular to the direction of opening and closing the mold. The "radial direction" referred to can be understood as a generally radial direction, and an absolute radial direction is not required. In actual implementation, the "radial direction" is only a preferred implementation direction. According to the specific structure of the first annular portion and the second annular portion, the setting of the flexible part can also deviate from the radial direction to a certain extent, as long as the first annular portion and the second annular portion can be sealed and matched, and can slide relative to each other.

[0040] Because the two halves of a normal mold are affected by various factors and may not be aligned or fit completely when closing the mold, the deviation is generally very small, usually not exceeding 1mm (if the deviation is too large, it is necessary to consider repairing or re-calibrating the mold), so the targeted adjustment range is actually very small. The clearance between the first annular portion and the second annular portion, the clearance at the mating position after fitting, and the change range of the sealing performance of the flexible part after being subjected to force only need to meet the adjustment range for the mold.

[0041] In this embodiment, the first annular portion and the second annular portion are not in direct contact, but are elastically connected only by the flexible member and the first elastic medium. Because both the first and second annular portions are annular in structure, the first and second plates 1 and 2 can deflect and / or offset to a certain (small) degree relative to the mold clamping direction.

[0042] In this embodiment, the first and second plates 1, 2 are provided with stoppers 3 that limit the travel of axial separation of the first and second plates 1, 2. The stoppers 3 are used to limit the travel of axial separation (movement in the mold-parting direction) of the first and second plates 1, 2, thereby ensuring that the first and second plates 1, 2 remain connected and preventing mold opening failure due to failure of the connection between the first and second plates 1, 2 during or at the moment of mold opening.

[0043] like Figure 10 As shown, the mold fit adjustment device 10 provided in this embodiment of the present application is used to mount the first mold half 5, and the second mold half 6 is fixed to the frame 81. In other embodiments, the mold fit adjustment device 10 is used to mount the second mold half 6, and the first mold half 5 is fixed to the mold clamping mechanism 4. In this embodiment, the first mold half 5 is the upper mold / male mold / fixed mold, and the second mold half 6 is the lower mold / female mold / movable mold.

[0044] The mold fit adjustment device 10 provided in the embodiment of the present application is elastically connected by the first plate 1 and the second plate 2 during mold closing, and the first plate 1 and the second plate 2 are floatingly connected by the first annular portion, the second annular portion, the flexible member and the first elastic medium, so that the first plate 1 and the second plate 2 can be deflected and / or offset by a certain amplitude and / or angle relative to the mold closing direction. When the mold is closed, the first half mold 5 can be deflected and / or offset by a certain amplitude and / or angle relative to the second half mold 6, so that the opposing surfaces of the first half mold 5 and the second half mold 6 can be adaptively and tightly fitted together, thereby effectively ensuring the quality of the molded product.

[0045] Specifically, if Figure 1-Figure 3 As shown, in this embodiment, the first annular portion is a convex ring 11, and the second annular portion is a first groove 21. The convex ring 11 is loosely inserted into the first groove 21. The flexible member includes a first flexible sealing ring 12 and a second flexible sealing ring 13. The first flexible sealing ring 12 is sealed between the outer wall of the convex ring 11 and the outer groove wall of the first groove 21, and the second flexible sealing ring 13 is sealed between the inner wall of the convex ring 11 and the inner groove wall of the first groove 21. The first and second flexible sealing rings 12 and 13 ensure an elastic sealing connection between the convex ring 11 and the first groove 21. A first elastic medium is provided between the top surface of the convex ring 11 and the bottom groove wall of the first groove 21. Specifically, after the convex ring 11 is sealedly connected to the first groove 21 by the first and second flexible sealing rings 12 and 13, a sealed first accommodating chamber 15 is formed within the first groove 21. The first accommodating chamber 15 is an annular chamber, and the first elastic medium is provided within the first accommodating chamber 15.

[0046] In other embodiments, the first annular portion is the first groove 21, the second annular portion is the convex ring 11, the convex ring 11 is gap-insulated in the first groove 21, the flexible part includes a first flexible sealing ring 12 and a second flexible sealing ring 13, the first flexible sealing ring 12 is sealedly connected between the outer side wall of the convex ring 11 and the outer groove wall of the first groove 21, the second flexible sealing ring 13 is sealedly connected between the inner side wall of the convex ring 11 and the inner groove wall of the first groove 21, and a first elastic medium is provided between the top surface of the convex ring 11 and the bottom groove wall of the first groove 21.

[0047] In this embodiment, the outer wall of the first groove 21 is provided with a first mounting groove for receiving a portion of the first flexible sealing ring 12, and the inner wall of the first groove 21 is provided with a second mounting groove for receiving a portion of the second flexible sealing ring 13. Alternatively, the outer wall of the protruding ring 11 is provided with a first mounting groove for receiving a portion of the first flexible sealing ring 12, and the inner wall of the protruding ring 11 is provided with a second mounting groove for receiving a portion of the second flexible sealing ring 13. Alternatively, both the outer wall of the protruding ring 11 and the outer wall of the first groove 21 are provided with first mounting grooves for receiving a portion of the first flexible sealing ring 12, and both the inner wall of the protruding ring 11 and the inner wall of the first groove 21 are provided with second mounting grooves for receiving a portion of the second flexible sealing ring 13. The number of first flexible sealing ring 12 and second flexible sealing ring 13 can be one, two, three, or another number, as long as the specific number ensures sealing between the first annular portion and the second annular portion.

[0048] In this embodiment, the axial direction (plug-in direction) of the first annular portion and the second annular portion is the mold closing direction, that is, the first plate 1 and the second plate 2 can move relative to each other along their axial directions and can deflect and / or offset relative to each other at a certain angle and / or amplitude.

[0049] like Figure 3 and Figure 10As shown, when the mold is closed, the clamping mechanism 4 drives the first plate 1, second plate 2, and first mold half 5 toward the second mold half 6, aligning the first mold half 5 and the second mold half 6 to achieve the closing action. After the first mold half 5 and the second mold half 6 are closed, the clamping mechanism 4 continues to apply a clamping force to the first plate 1 toward the second plate 2. Because the first accommodating cavity 15 is filled with a first elastic medium and is sealed, as the clamping force increases, the first elastic medium in the first accommodating cavity 15 is compressed. The second plate 2, driven by the first elastic medium, pushes the first mold half 5 against the second mold half 6. Due to the spacing between the first plate 1 and the second plate 2, the gap between the protruding ring 11 and the first groove 21, and the flexibility of the first and second flexible sealing rings 12 and 13, the second plate 2 can not only move relative to the first plate 1 in the closing direction, but also deflect and / or shift away from the closing direction, thereby driving the first mold half 5 to deflect and / or shift, so that it fits tightly against the second mold half 6.

[0050] When the first mold half 5 and the second mold half 6 are closed and pressed, if the opposing surfaces of the first mold half 5 and the second mold half 6 are not completely fitted together, that is, one side of the opposing surfaces is completely fitted together, and a gap appears on the other side (there is an angle between the opposing surfaces of the first mold half 5 and the second mold half 6), since the position where the first mold half 5 and the second mold half 6 are completely pressed cannot be further reduced, the pressure applied by the first mold half 5 to the second mold half 6 at this position is greater than that at other positions, and the reverse force of the second mold half 6 on the first mold half 5 at this position is also greater than that at other positions. The distance between the first mold half 5 and the second plate 2 and the first plate 1 at this position will be compressed to the maximum. Since the first half mold 5 and the second half mold 6 are separated at the position where the gap exists, the force exerted by the second plate 2 on the first half mold 5 will not be applied to the second half mold 6, and the second plate 2 and the first half mold 5 will not be subjected to the reverse force of the second half mold 6. The distance between the first half mold 5 and the second plate 2 and the first plate 1 at this position will not be further compressed or the further compressed distance will be smaller than that at other positions. When the clamping force is continued to be applied, the second plate 2 and the first half mold 5 will be forced to deflect and / or shift away from the clamping direction relative to the first plate 1, so that the first half mold 5 and the second half mold 6 can be completely and tightly fitted, which is beneficial to ensuring the quality of the molded product, preventing product size inaccuracy and glue overflow, and facilitating the inspection and subsequent processing of subsequent products.

[0051] In this embodiment, because the tightness deviation of the fitting between the two opposing surfaces of the first half mold 5 and the second half mold 6 of different molds is different when the molds are closed, the deflection and / or displacement range of the second plate 2 relative to the first plate 1 from the closing direction can be set according to actual needs: the spacing distance between the first plate 1 and the second plate 2, the gap distance between the convex ring 11 and the first groove 21 after the gap is inserted, and the flexibility of the first flexible sealing ring 12 and the second flexible sealing ring 13, as long as it can ensure that the first half mold 5 and the second half mold 6 can be smoothly and tightly fitted together.

[0052] Example 2:

[0053] like Figure 4-10 As shown, the mold fit adjustment device provided in this embodiment includes all the contents of Example 1. At the same time, in this embodiment, a movable ring 7 is movably embedded on the side of the second plate 2 facing the first plate 1, and the second annular portion is provided on the side of the movable ring 7 facing the first plate 1.

[0054] Because the mold fit adjustment device 10 provided in this embodiment incorporates all the contents of Example 1, it also possesses all the technical effects of Example 1. Furthermore, the movable ring 7 is movably embedded within the second plate 2, thereby enabling the movable ring 7 to deflect and / or shift relative to the first plate 1 and the second plate 2. By providing the second annular portion on the movable ring 7, the distance between the first plate 1 and the second plate 2 remains essentially unchanged, while allowing the movable ring 7 and the first plate 1 to deflect and / or shift away from the mold closing direction. Simultaneously, the second plate 2 and the movable ring 7 can also deflect and / or shift away from the mold closing direction. This facilitates relative deflection and / or shifting between the first plate 1 and the second plate 2, and allows for a greater deflection and / or shifting amplitude. This makes the connection between the first plate 1 and the second plate 2 more flexible, thereby facilitating improved fit when adjusting the opposing surfaces of the first and second mold halves 5 and 6.

[0055] Furthermore, if Figures 6-10 As shown, a second groove 22 for accommodating the movable ring 7 in a gap is provided on the side of the second plate 2 facing the first plate 1, a third flexible sealing ring 23 is provided in the gap between the outer wall of the movable ring 7 and the outer groove wall of the second groove 22, a fourth flexible sealing ring 24 is provided in the gap between the inner side wall of the movable ring 7 and the inner groove wall of the second groove 22, and a second elastic medium is provided in the gap between the bottom surface of the movable ring 7 and the bottom groove wall of the second groove 22.

[0056] The movable ring 7 is sealed within the second groove 22 via a third flexible sealing ring 23 and a fourth flexible sealing ring 24. A second accommodating cavity 29 is formed within the second groove 22, and the second elastic medium fills the second accommodating cavity 29. The third and fourth flexible sealing rings 23 and 24 allow relative sliding between the movable ring 7 and the second plate 2 along the mold clamping direction. The second elastic medium provides an elastic rebound force between the second plate 2 and the movable ring 7, allowing the second plate 2 and the movable ring 7 to detect deflection from the mold clamping direction.

[0057] In this embodiment, the outer wall of the second groove 22 is provided with a third mounting groove for mounting a portion of the third flexible sealing ring 23, and the inner wall of the second groove 22 is provided with a fourth mounting groove for mounting a portion of the fourth flexible sealing ring 24. Alternatively, the outer wall of the movable ring 7 is provided with a third mounting groove for mounting a portion of the third flexible sealing ring 23, and the inner wall of the movable ring 7 is provided with a fourth mounting groove for mounting a portion of the fourth flexible sealing ring 24. Alternatively, both the outer wall of the second groove 22 and the outer wall of the movable ring 7 are provided with third mounting grooves for mounting a portion of the third flexible sealing ring 23, and both the inner wall of the second groove 22 and the inner wall of the movable ring 7 are provided with fourth mounting grooves for mounting a portion of the fourth flexible sealing ring 24. The third and fourth flexible sealing rings 23, 24 can be provided in one, two, three, or other numbers, as long as the third and fourth flexible sealing rings 23, 24 can be sealedly connected to the movable ring 7.

[0058] Furthermore, if Figures 6-10 As shown, a limit plate 25 is provided on the side of the second plate 2 facing the first plate 1. The limit plate 25 is provided between the first plate 1 and the second plate 2. The limit plate 25 is fixed to the second plate 2 by a number of screws. The function of the limit plate 25 is to limit the movable ring 7 within the second groove 22.

[0059] In this embodiment, the movable ring 7 has a circular stepped structure and includes a third annular portion 71 and a fourth annular portion 72 disposed on the third annular portion 71 and having a smaller outer profile than the third annular portion 71. The second annular portion is disposed on the fourth annular portion 72. Specifically, the limiting plate 25 is provided with a limiting hole 251 into which the fourth annular portion 72 can be inserted. The diameter of the limiting hole 251 is smaller than the outer diameter of the third annular portion 71. Thus, when the limiting plate 25 is secured to the second plate 2, the movable ring 7 is constrained within the second groove 22. A fifth flexible sealing ring 26 is disposed between the outer wall of the fourth annular portion 72 and the inner groove wall of the limiting hole 251. The fifth flexible sealing ring 26 is used to achieve an elastic connection between the movable ring 7 and the limiting plate 25. A fifth mounting ring groove is provided on the outer wall of the fourth annular portion 72 and / or the inner groove wall of the limiting hole 251 for mounting a portion of the fifth flexible sealing ring 26.

[0060] In Examples 1 and 2 of the present application, the first flexible sealing ring 12, the second flexible sealing ring 13, the third flexible sealing ring 23, the fourth flexible sealing ring 24, and the fifth flexible sealing ring 26 are all sealing rubber rings, which are sealing silicone rings or sealing rubber rings. The sealing rubber rings not only have a good sealing effect, but also have good flexibility and elasticity. In this way, during the mold closing process, when the movable ring 7 and the first plate 1 deflect and / or shift away from the mold closing direction, and / or when the second plate 2 and the movable ring 7 deflect and / or shift away from the mold closing direction, the sealing of the first accommodating cavity 15 and the second accommodating cavity 29 will not be affected, thereby preventing the first elastic medium and the second elastic medium from overflowing when under pressure, thereby ensuring that the adjustment function of the mold fit adjustment device 10 is normal during the mold closing.

[0061] In Examples 1 and 2 of the present application, Figure 1 、 Figure 3 、 Figure 4 and Figure 6 As shown, the first elastic medium and the second elastic medium are both at least one of a gas, a liquid, or an elastic solid. Normally, the first and second elastic mediums can be a single type or form of medium. However, the simultaneous use or presence of different types or forms of mediums is not excluded. Therefore, the medium can be selected as long as it allows the first plate 1 and the second plate 2 to maintain floating motion and rebound after being compressed.

[0062] When the first elastic medium and the second elastic medium are both gas and / or liquid, a first medium filling hole 14 connected to the first groove 21 is provided on the side of the first plate 1 facing away from the second plate 2. The first medium filling hole 14 is used to fill the first accommodating cavity 15 in the first groove 21 with gas and / or liquid. A second medium filling hole 27 connected to the second groove 22 is provided on the side of the second plate 2. The second medium filling hole 27 is used to fill the second accommodating cavity 29 in the second groove 22 with gas and / or liquid. A sealing plug or sealing cover is provided in the first medium filling hole 14 and the second medium filling hole 27.

[0063] In the present application, the gas can be air, carbon dioxide, nitrogen or an inert gas. The gas has pressure after being compressed, which can produce a rebound effect, thereby pushing the second plate 2 and the first half mold 5 to move toward the second half mold 6 to press.

[0064] In the present application, the liquid can be water, hydraulic oil or sol, preferably low-fluidity hydraulic oil or sol, which is not easy to leak and can ensure the rebound effect after being compressed, thereby pushing the second plate 2 and the first half mold 5 to move toward the second half mold 6 for pressure.

[0065] In this application, the elastic solid is an elastic rubber or elastic cotton. The shape of the elastic rubber or elastic cotton can be selected according to actual needs and can be a single block or a plurality of dispersed particles. The particles can be spherical or polygonal. The elastic rubber or elastic cotton has a rebound effect after being compressed, thereby pushing the second plate 2 and the first half mold 5 toward the second half mold 6. In other embodiments, the first elastic medium and the second elastic medium can also be an annular air bag or an annular water bag.

[0066] In the present application, the first elastic medium filled in the first accommodating cavity 15 and the second elastic medium filled in the second accommodating cavity 29 may be of the same type or different types, and may be selected according to actual needs.

[0067] like Figure 1 ,like Figure 9 and Figure 10 As shown, in Examples 1 and 2 of the present application, a plurality of limiting members 3 are provided and are arranged on the sides of the first plate 1 and the second plate 2. Specifically, four limiting members 3 are provided, two limiting members 3 are arranged at intervals on the same side of the first plate 1 and the second plate 2, and the other two limiting members 3 are arranged at intervals and relative to each other on the other side of the first plate 1 and the second plate 2.

[0068] Specifically, a retaining groove 28 is provided on the side of the second plate 2. One end of a retaining member 3 is fixed to the side of the first plate 1, and the other end of the retaining member 3 is provided with a retaining portion that is movably inserted into the retaining groove 28. The retaining portion and the retaining groove 28 are engaged with each other in a retaining manner. In this embodiment, the retaining portion is a retaining protrusion 31. The size of the retaining protrusion 31 is smaller than that of the retaining groove 28. This allows the retaining protrusion 31 to move relative to each other within the retaining groove 28, thereby allowing the first and second plates 1 and 2 to move relative to the mold clamping direction and deflect and / or shift away from the mold clamping direction. Specifically, the retaining member 3 is L-shaped. The end of the retaining member 3 away from the retaining protrusion 31 is fixed to the side of the first plate 1 by a screw, and the retaining protrusion 31 is inserted into the retaining groove 28. In other embodiments, the retaining member 3 can be U-shaped or other shapes. Specifically, as long as the retaining member 3 can hold the second plate 2 and the first mold half 5 together, preventing the second plate 2 from separating from the first plate 1 in a direction away from the first plate 1, it is sufficient.

[0069] In other embodiments, the limiting member 3 may also be of other shapes or quantities, and the limiting member 3 may also be arranged at other positions on the first plate 1 and the second plate 2. For example, the limiting member 3 may be an annular whole, one end of the annular whole is fixedly connected to the first plate 1, and the other end of the annular whole is limitedly matched with the second plate 2. The annular whole has an annular limiting portion, and the second plate 2 has a limiting groove arranged along its circumference; or, the limiting member 3 is provided in multiple forms, for example, it can be arranged on the first plate 1 and the second plate 2 in an annular array with the center of the first plate 1 or the second plate 2 as the axis. The limiting member 3 may be a limiting pin. At this time, one end of the limiting member 3 is fixed on the first plate 1, and the other end of the limiting member is provided with a limiting portion. The second plate 2 is provided with a limiting hole or a limiting groove for limiting the second plate 2 from moving away from the first plate 1 during the mold opening process. The limiting portion of the limiting member 3 and the limiting hole or limiting groove are gap-limited matched (similar to the way a screw head cooperates with a countersunk hole). The number and placement of the limiting members 3 are sufficient to hold the second plate 2 and the first mold half 5 in place, preventing the second plate 2 from separating from the first plate 1. The clearance between the limiting members 3 and the limiting holes or grooves is sufficient to allow the first and second plates 1 and 2 to move relative to the mold clamping direction and deflect and / or shift to a certain extent away from the mold clamping direction, without hindering the first and second plates 1 and 2 from adjusting the fit between the first and second mold halves 5 and 6.

[0070] like Figure 1 、 Figure 3 、 Figure 4 and Figure 6 As shown, a through hole 101 is provided in the middle of the mold fit adjustment device 10 when the mold is closed. Specifically, a through hole 101 coaxially arranged with the limiting hole 251 is provided on the first plate 1, the second plate 2 and the movable ring 7. The through hole 101 is used for the injection nozzle of the injection device 82 below to pass smoothly to inject glue into the mold.

[0071] Example 3:

[0072] like Figure 11 and Figure 12 As shown, this embodiment is used to provide a mold clamping mechanism, which includes a lifting mechanism 41, an upper mold fixing plate 42 and a mold fitting adjustment device 10 during mold clamping in Example 1 and Example 2; since the mold clamping mechanism 4 provided in this embodiment includes all the contents of Example 1 and Example 2, it also has all the technical effects of Example 1 and Example 2.

[0073] Specifically, the lifting mechanism 41 is used to drive the upper mold fixing plate 42 to perform lifting and lowering movements. The direction of the lifting and lowering movement is the closing direction of the mold. The first plate 1 is fixed on the upper mold fixing plate 42, and the second plate 2 is fixed to the first half mold 5 of the mold. Therefore, the lifting mechanism 41 can drive the first half mold 5 to perform lifting and lowering movements, thereby realizing the closing and parting of the mold.

[0074] In this embodiment, the lifting mechanism 41 uses guide posts and a pneumatic or hydraulic cylinder to drive the upper mold fixing plate 42 to move up and down. The guide posts are used to ensure smooth lifting of the upper mold fixing plate 42. Alternatively, the lifting mechanism 41 may use a guide post and connecting rod structure to drive the upper mold fixing plate 42 to move up and down.

[0075] Example 4:

[0076] like Figure 1 、 Figure 4 、 Figure 11 and Figure 12 As shown, this embodiment also provides a molding machine, which is an injection molding machine or a compression molding machine. The molding machine 8 can be a traditional single-station molding machine, a slide-type molding machine, or a turntable multi-station molding machine. The molding machine 8 includes a frame 81 and the clamping mechanism 4 described in Example 3; since the clamping mechanism 4 provided in this embodiment includes all the contents of Example 3, it also has all the technical effects of Example 3.

[0077] In this embodiment, a molding machine 8 is described using a multi-station injection molding machine as an example. Specifically, the molding machine 8 includes a frame 81, an injection unit 82, and the mold clamping mechanism 4 described in Example 3. Specifically, a rotating mechanism is provided on the frame 81, on which a plurality of second mold halves 6 are spaced apart. A lifting mechanism 41 is provided on the frame 81, and an upper mold fixing plate 42 is provided on the lifting mechanism 41 and positioned above the second mold halves 6. During mold clamping, a mold fit adjustment device 10 is provided on the side of the upper mold fixing plate 42 closest to the second mold halves 6, and an injection unit 82 is provided on the side of the upper mold fixing plate 42 further away from the second mold halves 6. During mold clamping, the lifting mechanism 41 drives the upper mold fixing plate 42 downward toward the second mold halves 6, thereby bringing the first mold halves 5 and 6 into contact. The mold fit adjustment device 10 ensures a tight fit between the first mold halves 5 and 6 during mold clamping, ensuring mold clamping quality. The injection unit 82, rotating mechanism, and other components are conventional structures and will not be described in detail here.

[0078] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A mold fit adjustment device during mold closing, characterized in that: The invention comprises a first plate and a second plate movably spaced apart from each other, wherein a first annular portion is provided on a side of the first plate facing the second plate, and a second annular portion is provided on a side of the second plate facing the first plate, wherein the first annular portion and the second annular portion are gap-fitted together, a flexible member for elastically connecting the first and second plates is provided in the gap between the first and second annular portions, a first elastic medium for floatingly connecting the first and second plates is provided in the gap between the first and second annular portions, and a limiting member for limiting the travel of separation movement of the first and second plates is provided on the first and second plates; the floating connection means that the first and second plates can maintain a relative suspension state via the first elastic medium, and the first elastic medium is at least one of a gas, a liquid, or an elastic solid; The first annular portion is a convex ring, the second annular portion is a first groove, the convex ring gap is inserted into the first groove, the flexible member includes a first flexible sealing ring and a second flexible sealing ring, the first flexible sealing ring is sealed between the outer side wall of the convex ring and the outer groove wall of the first groove, the second flexible sealing ring is sealed between the inner side wall of the convex ring and the inner groove wall of the first groove, and the first elastic medium is provided between the top surface of the convex ring and the bottom groove wall of the first groove; or, the first annular portion is a first groove, the second annular portion is a convex ring, the convex ring gap is inserted into the first groove, the flexible member includes a first flexible sealing ring and a second flexible sealing ring, the first flexible sealing ring is sealed between the outer side wall of the convex ring and the outer groove wall of the first groove, the second flexible sealing ring is sealed between the inner side wall of the convex ring and the inner groove wall of the first groove, and the first elastic medium is provided between the top surface of the convex ring and the bottom groove wall of the first groove; wherein, the first flexible sealing ring and the second flexible sealing ring are both sealing rubber rings, and the sealing rubber rings are sealing silicone rings or sealing rubber rings.

2. The mold fitting adjustment device during mold closing according to claim 1, characterized in that: A movable ring is movably embedded on one side of the second plate facing the first plate, and the second annular portion is provided on the side of the movable ring facing the first plate.

3. The mold fitting adjustment device during mold closing according to claim 2, characterized in that: A second groove for accommodating the movable ring is provided on the side of the second plate facing the first plate, a third flexible sealing ring is provided in the gap between the outer wall of the movable ring and the outer groove wall of the second groove, a fourth flexible sealing ring is provided in the gap between the inner side wall of the movable ring and the inner groove wall of the second groove, and a second elastic medium is provided in the gap between the bottom surface of the movable ring and the bottom groove wall of the second groove.

4. The mold fitting adjustment device during mold closing according to claim 3, characterized in that: A limiting plate is provided on the side of the second plate facing the first plate, the movable ring includes a third annular portion and a fourth annular portion provided on the third annular portion and having an outer contour smaller than the outer contour of the third annular portion, the second annular portion is provided on the fourth annular portion, a limiting hole is provided on the limiting plate for the fourth annular portion to be inserted into the gap, and a fifth flexible sealing ring is provided between the outer wall of the fourth annular portion and the inner groove wall of the limiting hole.

5. The mold fitting adjustment device during mold closing according to claim 4, characterized in that: The third flexible sealing ring, the fourth flexible sealing ring and the fifth flexible sealing ring are all sealing rubber rings.

6. The mold fitting adjustment device during mold closing according to any one of claims 1 to 5, characterized in that: The limiting member is arranged on the first plate and the second plate, and a limiting groove is provided on the second plate. One end of the limiting member is fixed on the first plate, and the other end of the limiting member is provided with a limiting portion that moves in the limiting groove, and the limiting portion and the limiting groove are limitedly matched.

7. A mold clamping mechanism, characterized in that: The invention comprises a mold fitting adjustment device during mold closing as described in any one of claims 1 to 6.

8. A molding machine, characterized in that: It comprises the mold clamping mechanism as claimed in claim 7.

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