A sealing guide mechanism for a mold

Abstract

The utility model relates to a sealing technology field of guide mechanism, concretely relates to a sealing guide mechanism of mould, include: guide component, guide component includes the guide pin and guide bush that mutually slide and cooperate, the guide pin fixed mounting is in the movable mould base plate of mould, the guide bush fixed mounting is in the fixed mould base plate of mould, the guide pin insertion end sleeve mouth department of guide bush is coaxially equipped with annular sealing element, the inside diameter of sealing element is same with the inside diameter of guide bush, to form the continuous guide surface, the inner peripheral wall of sealing element has the multiple annular oil storage grooves that continuously distribute along its axial direction. The section of each oil storage groove is V, U, C, trapezoidal arbitrary one, and the interval of adjacent two oil storage grooves is 0.5-1mm. Sealing element is fixed in the guide pin insertion end sleeve mouth department of guide bush through gland component, and the gland component is fixed on the fixed mould base plate through fastener. The utility model, the multiple annular oil storage grooves of sealing element inner peripheral wall scrape the oil stain, dust to sealing element inside, improve the yield of product.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology for guide mechanisms, and in particular to a sealing guide mechanism for a mold. Background Technology

[0002] Injection molds are precision tools used for plastic injection molding. Molten plastic is injected into a closed cavity under high pressure (70-200 MPa), and after cooling and solidification, the product is formed. This technology accounts for 30% of the total volume of engineering plastic products and is applicable to fields such as automotive parts, electronic casings, and daily necessities.

[0003] In injection molds, guide bushings and guide pillars are important components of the mold guiding device. Guide pillars are usually installed on the moving mold, serving to guide and support it. Guide bushings are installed on the fixed mold and work in conjunction with guide pillars to provide guiding and positioning functions. The specific functions of guide bushings and guide pillars in molds are: 1. Guiding function: Guide pillars and guide bushings ensure precise alignment of the moving and fixed molds during mold opening and closing, preventing mold misalignment and ensuring mold accuracy and stability; 2. Positioning function: When the mold is closed, guide pillars and guide bushings work together to ensure accurate alignment of all mold components, avoiding processing errors caused by inaccurate positioning; 3. Withstanding lateral pressure: During mold operation, guide pillars and guide bushings also need to withstand a certain amount of lateral pressure to ensure that the mold does not shift under stress.

[0004] Mold guide pillars and bushings require lubrication. During use, lubricating oil should be applied regularly to ensure the normal use and lifespan of the mold. In the production of some high-precision injection molded products, such as head-up displays (HUDs), the lubricating oil in the guide pillars and bushings can seep into the product cavity with the movement of the mold, resulting in stains and oil stains on the product surface, affecting the quality of the product. A sealing and guiding mechanism for the mold is proposed to solve the problems existing in the prior art. Utility Model Content

[0005] The purpose of this invention is to provide a sealing and guiding mechanism for a mold, so as to solve the problem that the guiding mechanism in the existing mold lacks an effective sealing structure and cannot block the diffusion path of lubricating oil.

[0006] The technical solution of this utility model is: a sealing and guiding mechanism for a mold, comprising: a guiding assembly, the guiding assembly including a guide post and a guide sleeve that slide and cooperate with each other; the guide post is fixedly installed on the moving mold base plate of the mold; the guide sleeve is fixedly installed on the fixed mold base plate of the mold;

[0007] The guide post insertion end of the guide sleeve is coaxially fitted with an annular seal. The inner diameter of the seal is the same as the inner diameter of the guide sleeve to form a continuous guide surface. The inner circumferential wall of the seal has multiple annular oil storage grooves continuously distributed along its axial direction.

[0008] Preferably, the cross-section of each oil storage trench is any one of V-shape, U-shape, C-shape, or trapezoid, and the distance between two adjacent oil storage trenches is 0.5-1 mm.

[0009] Preferably, the sealing element is fixed to the guide post insertion end of the guide sleeve by a pressure cap component, and the pressure cap component is fixed to the fixed mold base plate by fasteners.

[0010] Preferably, the gland member is annular and coaxially arranged with the seal;

[0011] The inner diameter of the gland member is the same as the inner diameter of the seal, and the outer diameter of the gland member is larger than the outer diameter of the seal, forming a mounting ring portion that extends beyond the outer contour of the seal. The mounting ring portion has multiple mounting thread holes that are threadedly connected to the fixed mold base plate in the circumferential direction.

[0012] The fastener is a screw.

[0013] Preferably, the fixed mold base plate has a first reducing hole for sequentially installing the guide sleeve, the seal, and the pressure cap component from top to bottom. The first reducing hole includes a T-shaped hole for installing the guide sleeve, a first round hole for installing the seal, and a second round hole for installing the pressure cap component, which are connected in sequence.

[0014] Preferably, the moving mold base plate has a second through hole of varying diameter for mounting guide posts; the second through hole of varying diameter is T-shaped.

[0015] Preferably, the fixed mold base plate is fixed to the fixed plate by screws, thereby fixing the guide sleeve to the fixed mold base plate.

[0016] Preferably, the moving mold base plate is fixed to the pad plate by screws, thereby fixing the guide post to the moving mold base plate.

[0017] Compared with the prior art, the advantages of this utility model are:

[0018] (1) A sealing and guiding mechanism for a mold according to the present invention includes: a guiding assembly, which includes a guide post and a guide sleeve that slide and cooperate with each other; the guide post is fixedly installed on the moving mold base plate of the mold; the guide sleeve is fixedly installed on the fixed mold base plate of the mold; an annular sealing element is coaxially installed at the guide post insertion end of the guide sleeve, the inner diameter of the sealing element is the same as the inner diameter of the guide sleeve to form a continuous guiding surface; multiple annular oil storage grooves are continuously distributed along the axial direction on the inner peripheral wall of the sealing element. The multiple annular oil storage grooves on the inner peripheral wall of the sealing element generate a local negative pressure effect when the guide post reciprocates, actively adsorbing and storing residual lubricating oil, scraping oil stains and dust into the sealing element, enhancing the sealing reliability, preventing lubricating oil on the guide post and guide sleeve from seeping into the product cavity, and improving the product yield.

[0019] (2) A sealing guide mechanism for a mold in this utility model has an inner diameter of the sealing element that is consistent with the inner diameter of the guide sleeve. When the guide post is inserted, it forms a seamless continuous guide surface, which reduces frictional resistance and vibration during the movement process, thereby reducing the risk of wear and extending the service life. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the sealing and guiding mechanism of the mold described in this utility model;

[0022] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0023] Figure 3 for Figure 2 A magnified structural diagram at point B in the middle.

[0024] The components are: 1. guide post, 2. guide sleeve, 3. seal, 4. oil storage groove, 5. pressure cap component, 6. moving mold base plate, 7. fixed mold base plate, 8. fixing plate, and 9. pad plate. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to specific embodiments:

[0026] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.

[0027] like Figures 1-3As shown, a sealing and guiding mechanism for a mold includes: a guiding assembly, which includes a guide post 1 and a guide sleeve 1 that slide and cooperate with each other; the guide post 1 is fixedly installed on the moving mold base plate 6 of the mold; the guide sleeve 1 is fixedly installed on the fixed mold base plate 7 of the mold; an annular sealing element 3 is coaxially installed at the insertion end of the guide post 1 of the guide sleeve 1, the inner diameter of the sealing element 3 is the same as the inner diameter of the guide sleeve 1 to form a continuous guiding surface; the inner diameter of the sealing element 3 is consistent with the inner diameter of the guide sleeve 1, forming a seamless continuous guiding surface when the guide post 1 is inserted, reducing frictional resistance and vibration during the movement, thereby reducing the risk of wear and extending the service life of the sealing and guiding mechanism; the inner peripheral wall of the sealing element 3 has multiple annular oil storage grooves 4 continuously distributed along its axial direction. Multiple annular oil storage grooves 4 on the inner circumferential wall of the seal 3 generate a local negative pressure effect when the guide post 1 reciprocates, actively adsorbing and storing residual lubricating oil, scraping oil stains and dust into the seal 3, enhancing sealing reliability, preventing lubricating oil on the guide post 1 and guide sleeve 1 from seeping into the product cavity, and improving product yield.

[0028] Each oil storage groove 4 has a cross-section of any one of V-shape, U-shape, C-shape, or trapezoidal shape, and the distance between two adjacent oil storage grooves 4 is 0.5-1 mm. The seal 3 is fixed to the insertion end of the guide post 1 of the guide sleeve 1 by the gland member 5, and the gland member 5 is fixed to the fixed mold base plate 7 by fasteners. The gland member 5 is annular and coaxially arranged with the seal 3; the inner diameter of the gland member 5 is the same as the inner diameter of the seal 3, and the outer diameter of the gland member 5 is larger than the outer diameter of the seal 3, forming a mounting ring portion that extends beyond the outer contour of the seal 3. The mounting ring portion has multiple mounting threaded holes that are threaded to the fixed mold base plate 7 in a circumferential direction; the fasteners are screws. The screw connection method simplifies the disassembly process of the gland member 5 and the seal 3, and makes the maintenance and replacement of the seal 3 convenient.

[0029] A first reducing hole is provided through the fixed mold base plate 7 for sequentially installing the guide sleeve 1, the seal 3, and the pressure cap component 5 from top to bottom. The first reducing hole includes a T-shaped hole for installing the guide sleeve 1, a first round hole for installing the seal 3, and a second round hole for installing the pressure cap component 5, which are connected sequentially. In this embodiment, the guide sleeve 1 is T-shaped with a circular boss, which facilitates the guide sleeve 1 to be limited in the T-shaped hole. The fixed mold base plate 7 is fixed to the fixing plate 8 by screws. The fixing plate 8 abuts against the end face of the circular boss of the guide sleeve 1, thereby fixing the guide sleeve 1 to the fixed mold base plate 7. A second reducing hole is provided through the moving mold base plate 6 for installing the guide post 1; the second reducing hole is T-shaped. In this embodiment, the guide post 1 is also T-shaped and has a circular boss, which makes it easy for the guide post 1 to be limited in the second through hole of different diameter. The moving mold base plate 6 is fixed to the pad plate 9 by screws. The pad plate 9 pushes against the end face of the circular boss of the guide post 1, thereby fixing the guide post 1 to the moving mold base plate 6.

[0030] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and therefore, all changes falling within the meaning and scope of the equivalents of the claims are intended to be included within this utility model.

Claims

1. A sealing and guiding mechanism for a mold, characterized in that, include: A guiding assembly, comprising a guide post and a guide sleeve that slide against each other; the guide post is fixedly mounted on the moving mold base plate of the mold; the guide sleeve is fixedly mounted on the fixed mold base plate of the mold. The guide post insertion end of the guide sleeve is coaxially fitted with an annular seal. The inner diameter of the seal is the same as the inner diameter of the guide sleeve to form a continuous guide surface. The inner circumferential wall of the seal has multiple annular oil storage grooves continuously distributed along its axial direction.

2. The sealing and guiding mechanism for a mold according to claim 1, characterized in that: The cross-section of each oil storage trench is any one of V-shape, U-shape, C-shape, or trapezoid, and the distance between two adjacent oil storage trenches is 0.5-1 mm.

3. The sealing and guiding mechanism for a mold according to claim 1, characterized in that: The sealing element is fixed to the guide post insertion end of the guide sleeve by a pressure cap component, and the pressure cap component is fixed to the fixed mold base plate by fasteners.

4. The sealing and guiding mechanism for a mold according to claim 3, characterized in that: The gland component is annular and coaxially arranged with the sealing element; The inner diameter of the gland member is the same as the inner diameter of the seal, and the outer diameter of the gland member is larger than the outer diameter of the seal, forming a mounting ring portion that extends beyond the outer contour of the seal. The mounting ring portion has multiple mounting thread holes that are threadedly connected to the fixed mold base plate in the circumferential direction. The fastener is a screw.

5. The sealing and guiding mechanism for a mold according to claim 3, characterized in that: The fixed mold base plate has a first reducing hole for sequentially installing a guide sleeve, a seal, and a pressure cap component from top to bottom. The first reducing hole includes a T-shaped hole for installing the guide sleeve, a first round hole for installing the seal, and a second round hole for installing the pressure cap component, which are connected in sequence.

6. The sealing and guiding mechanism for a mold according to claim 1, characterized in that: The moving mold base plate has a second through hole of varying diameter for mounting guide posts; the second through hole of varying diameter is T-shaped.

7. The sealing and guiding mechanism for a mold according to claim 1, characterized in that: The fixed mold base plate is fixed to the fixed plate by screws, thereby fixing the guide sleeve to the fixed mold base plate.

8. The sealing and guiding mechanism for a mold according to claim 1, characterized in that: The moving mold base plate is fixed to the pad plate by screws, thereby fixing the guide post to the moving mold base plate.

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