A double slider forming mechanism

Abstract

The utility model relates to the technical field of automobile parts manufacturing, specifically is a double slider forming mechanism, the problem that the background art has proposed is solved, it includes lower slide and upper slide, the upper slide is installed in the upper of lower slide, lower slide with a drive its opposite lower mould main body overturning lower drive mechanism connection, the upper slide with a drive its opposite lower slide vertical ejection movement ejection drive mechanism connection, the adjacent surface of upper slide and lower slide is equipped with the mutually matched forming surface for with lower mould main body together enclose PU bound edge forming mould cavity. The utility model, through the sequential action of "vertical ejection first removes the reverse buckle, then integral overturning separates the product", fundamentally avoids the direct pulling of the demolding force to the negative angle area of PU product, effectively prevents product damage, improves the yield.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts manufacturing technology, specifically a dual-slider forming mechanism. Background Technology

[0002] In the production of automotive sunroof glass, a layer of PU material is typically poured around the glass to form an edging, which serves to seal, absorb shocks, decorate, and secure the glass. To meet higher installation strength and functional requirements, the PU edging is often designed with complex structures such as "U" grooves, and the edges of this structure often form a negative angle, i.e., an inverted edge.

[0003] Currently, molds for molding such products mostly adopt an integral slider structure. This means that a single slider and the lower mold body form the molding cavity. During demolding, the slider directly flips outward or the core is pulled out. However, when molding products with negative angles, the slider and the negative angle area of ​​the product will lock together. Forcibly flipping the slider will generate huge tensile forces, causing quality problems such as tearing, deformation, and damage to the soft PU edging, resulting in low product yield and frequent mold maintenance. Utility Model Content

[0004] To solve the above problems, this utility model provides the following technical solution: a double slider forming mechanism, wherein the double slider forming mechanism is installed on one side of the lower mold body of the mold;

[0005] Includes the lower slider and the upper slider;

[0006] The upper slider is stacked and installed above the lower slider;

[0007] The lower slider is connected to a lower drive mechanism that drives it to rotate relative to the lower mold body;

[0008] The upper slider is connected to an ejection drive mechanism that drives it to make a vertical ejection motion relative to the lower slider.

[0009] The adjacent surfaces of the upper and lower sliders are provided with mutually cooperating molding surfaces, which together with the lower mold body form a molding cavity for PU edging.

[0010] Furthermore, the ejection drive mechanism is a hydraulic cylinder, a pneumatic cylinder, or a hydraulic ejector rod.

[0011] Furthermore, the lower drive mechanism is a hydraulic cylinder or a pneumatic cylinder.

[0012] Furthermore, the molding surface of the upper slider includes a negative angle surface for molding the negative angle region of the PU edge banding.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. Non-destructive demolding: By first vertically ejecting to release the undercut, and then flipping the product as a whole to detach it, the direct pulling of the demolding force on the negative angle area of ​​the PU product is fundamentally avoided, effectively preventing product damage and significantly improving yield.

[0015] 2. Compact and reasonable structure: The traditional integral slider is innovatively divided into upper and lower halves and integrated with dual drive. The structure is exquisite and the function is clear. It solves the complex demolding problem without significantly increasing the mold volume.

[0016] 3. High degree of automation: The entire demolding process can be precisely controlled by the PLC program to determine the sequence and timing of actions, ensuring high reliability and seamless integration into automated production lines.

[0017] 4. Strong applicability: The design concept of this mechanism can be extended to other molding fields of soft materials (such as rubber and TPE) that have difficulties in deep undercuts and negative angle demolding. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a cross-sectional schematic diagram of the double slider forming mechanism and the lower mold body of this utility model in the mold closing state;

[0020] Figure 2 This is a schematic diagram of the assembly structure of the dual-slider forming mechanism and its driving components of this utility model;

[0021] Figure 3 This utility model Figure 2 A magnified view of a portion of point A in the middle.

[0022] In the diagram: 1. Lower slider; 2. Upper slider; 3. Lower drive mechanism; 4. Lower mold body; 5. Ejection drive mechanism; 6. PU edging; 7. Sunroof glass. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-3 As shown, in this embodiment, the dual-slider forming mechanism is installed on one side of the lower mold body 4 of the mold.

[0025] Includes lower slider 1 and upper slider 2;

[0026] The upper slider 2 is stacked and installed above the lower slider 1;

[0027] The lower slider 1 is connected to a lower drive mechanism 3 that drives it to rotate relative to the lower mold body 4;

[0028] The upper slider 2 is connected to an ejection drive mechanism 5 that drives it to make a vertical ejection motion relative to the lower slider 1;

[0029] The adjacent surfaces of the upper slider 2 and the lower slider 1 are provided with mutually cooperating molding surfaces, which together with the lower mold body 4 form a molding cavity for PU edging.

[0030] The ejection drive mechanism 5 is a hydraulic cylinder, pneumatic cylinder, or hydraulic ejector rod.

[0031] The lower drive mechanism 3 is a hydraulic cylinder or a pneumatic cylinder.

[0032] The molding surface of the upper slider 2 includes a negative angle surface for molding the negative angle area of ​​the PU edge banding.

[0033] The working principle of this utility model is as follows:

[0034] The dual-slider forming mechanism of this utility model is installed on the side of the lower mold body 4. The sunroof glass 7 is placed on the lower mold body 4, and the upper slider 2 is stacked on the lower slider 1. The two are precisely guided by a guide mechanism (not shown in the figure, such as a guide post or guide sleeve). The lower slider 1 is connected to the lower drive mechanism 3 (such as a hinged hydraulic cylinder), and the upper slider 2 is connected to the ejection drive mechanism 5 (such as a built-in hydraulic cylinder). After the mold is closed, the upper slider 2, the lower slider 1 and the lower mold body 4 together form a forming cavity. Liquid PU is injected and solidified to form a PU edging 6 wrapped around the sunroof glass 7. The forming surface of the upper slider 2 forms the negative angle area of ​​the PU edging 6.

[0035] When demolding begins, the upper mold moves upward first, and then the ejection drive mechanism 5 moves first, pushing the upper slider 2 to be ejected strictly in the vertical direction (the stroke is, for example, 10mm), so that the molding surface of the upper slider 2 is completely separated from the negative angle part of the PU edge 6.

[0036] After the upper slider 2 has been ejected, the lower drive mechanism 3 begins to operate, pulling the entire double slider mechanism (including the lower slider 1 and the already ejected upper slider 2) outward around the hinge point (e.g., rotating 70°), thus allowing the forming surface of the lower slider 1 to smoothly detach from the product. Finally, the formed sunroof glass product is removed from the lower mold body 4, completing one work cycle. The ejection and rotation sequence and speed are precisely controlled by the PLC control system.

[0037] The ejector drive mechanism 5 and the lower drive mechanism 3 are not limited to hydraulic cylinders; they can also be linear drive components such as pneumatic cylinders or electric push rods. The guide mechanism can take the form of guide posts, guide sleeves, T-slots, etc., to ensure the movement accuracy of the upper slider.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A double-slider forming mechanism, wherein the double-slider forming mechanism is installed on one side of the lower mold body (4) of the mold; Its features are: Includes a lower slider (1) and an upper slider (2); The upper slider (2) is stacked and installed above the lower slider (1); The lower slider (1) is connected to a lower drive mechanism (3) that drives it to rotate relative to the lower mold body (4); The upper slider (2) is connected to an ejection drive mechanism (5) that drives it to make a vertical ejection motion relative to the lower slider (1); The adjacent surfaces of the upper slider (2) and the lower slider (1) are provided with mutually cooperating molding surfaces, which together with the lower mold body (4) form the molding cavity of the PU edge (6).

2. The dual-slider forming mechanism according to claim 1, characterized in that: The ejection drive mechanism (5) is a hydraulic cylinder, a pneumatic cylinder, or a hydraulic ejector rod.

3. The dual-slider forming mechanism according to claim 1, characterized in that: The lower drive mechanism (3) is a hydraulic cylinder or a pneumatic cylinder.

4. The dual-slider forming mechanism according to claim 1, characterized in that: The upper slider (2) has a forming surface that includes a negative angle surface for forming the negative angle area of ​​the PU edge.

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