Automobile ceiling mold facilitating edge covering at skylight of automobile ceiling
By designing clearance grooves in the car roof mold, wrinkling of the sunroof edge is prevented during the molding process, thus solving the problem of unstable edge binding at the car roof sunroof and ensuring the stability and molding quality of the edge binding.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-12
- Publication Date
- 2026-03-27
AI Technical Summary
In existing technologies, the edging around the sunroof of a car is prone to falling apart, resulting in instability.
A car roof mold was designed, comprising an upper mold and a lower mold. The mold is provided with a relief groove to prevent the sunroof edge from being pressed into one piece. By forming in the relief groove and then wrapping the edge, it is ensured that the sunroof edge does not wrinkle.
This design prevents the edging at the car roof sunroof from falling apart, improving the stability and forming quality of the edging.
Smart Images
Figure CN224044606U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automobile roof manufacturing, and in particular to automobile roof molds. Background Technology
[0002] A car headliner is a soft-touch interior panel installed on the roof of a car's passenger compartment. In existing technology, the manufacturing process of a car headliner requires a mold, which consists of upper and lower molds. The manufacturing process of a car headliner is as follows: Figure 5 As shown, the car roof material includes an upper layer 10 and a lower layer 11. The top wall of the lower layer 11 is coated with hot melt adhesive. The upper layer 10 is placed on the lower layer 11, and both are placed horizontally on a lower mold (not shown in the figure). They are then pressed down and shaped by the upper mold (not shown in the figure), and the hot melt adhesive is heated by the upper mold to bond them together. The car roof material is removed by the operator to cut off the sunroof area 12, resulting in a flat sunroof edge. The car roof material is then placed by the operator on an edge-wrapping machine (not shown in the figure), which folds the flat sunroof edge upwards. Figure 6 The flat skylight edge is then folded outwards until it is pressed onto the upper layer 10 to complete the edge binding. Before edge binding, the lower layer 13 of the flat skylight edge is at a higher position than the lower layer 14. Therefore, when the upper layer 13 of the flat skylight edge is folded upwards, its upper end should originally protrude beyond the upper end of the lower layer 14. However, since the upper and lower layers 14 and 13 of the flat skylight edge have been pressed together with the upper layer 10 and the lower layer 11, when the upper layer 13 of the flat skylight edge is folded upwards, it becomes flush with the upper end of the lower layer 13. The lower layer 13 of the flat skylight edge then shrinks into... Figure 6 In this state, the upper layer 13 of the flat skylight edge tends to extend upwards. Figure 6 The trend will intensify if the upper layer 13 of the flat sunroof edge is further pressed onto the upper layer 10, thus becoming Figure 7 This condition causes the lower layer 14 of the flat skylight edge to detach from the upper layer 13 of the flat skylight edge, resulting in the edge covering falling apart. Utility Model Content
[0003] The present invention aims to provide a car roof mold that facilitates the edging of the car roof sunroof, which can prevent the car roof edging from falling apart.
[0004] A car roof mold for easy edging of the sunroof area includes an upper mold and a lower mold. The lower mold holds the car roof material, and the upper mold presses down on the car roof material on the lower mold. The bottom wall of the upper mold is fitted with the upper mold sunroof body and the upper mold sunroof outer frame. The upper mold sunroof outer frame surrounds the upper mold sunroof body. Both the upper mold sunroof outer frame and the mold sunroof body are convex downwards, with a gap between them to form a first clearance groove. The bottom wall of the lower mold is partially concave to form a sinkhole, and the bottom wall inside the sinkhole is partially convex to form the lower mold sunroof body. The lower mold sunroof body is vertically aligned with the upper mold sunroof body. A gap is left between the outer wall of the lower mold sunroof body and the inner wall of the sinkhole to form a second clearance groove. The second clearance groove is vertically aligned with the first clearance groove to create a pressure-free space between them.
[0005] Furthermore, the top walls of the lower mold's sunroof section and the lower mold are at the same height.
[0006] Furthermore, the bottom walls of the upper mold sunroof body and the upper mold sunroof outer frame are at the same height.
[0007] Furthermore, the first clearance groove has its opening at the bottom and its bottom at the top, and the bottom of the groove and the bottom wall of the upper mold are at the same height.
[0008] The beneficial effect is that when the raw material for the car roof is pressed by the upper mold, such as Figure 8 As shown, the sunroof edge of the car roof material is located in the unpressurized space between the second and first clearance grooves. It is not pressed into a single piece and does not contact the upper and lower molds to prevent the hot melt adhesive from melting. The sunroof edge is not pressed and is therefore raised, comprising an upper and lower raised sunroof edge. The operator transfers the car roof material to the edge-sealing machine, applies adhesive to the top wall of the upper raised sunroof edge, and the edge-sealing machine pushes the sunroof edge upwards. Figure 9 In this state, because the upper and lower layers of the raised skylight edge are not bonded, the upper layer of the raised skylight edge will not wrinkle due to the vertical restriction of the lower layer. Subsequently, together with the lower layer, the edge-wrapping machine continues to fold outwards until the upper layer adheres to the top wall of the material layer. The lower layer is then pressed onto the upper layer. The hot melt adhesive on the lower layer is heated and melted by the edge-wrapping machine, thus bonding the lower layer to the upper layer. This completes the edge-wrapping process. In summary, the lower layer of the raised skylight edge is bent into... Figure 10 The material is then bonded to the upper layer of the raised skylight edge, instead of being first bonded together and then bent as in existing technologies. Figure 9 , Figure 10The state, so the utility model will not cause the convex sunroof edge upper layer to shrink, and the edge is not easy to collapse. BRIEF DESCRIPTION OF DRAWINGS
[0009] Figure 1 is the front view of the automobile roof mold of the utility model;
[0010] Figure 2 is the enlarged view of A of Figure 1
[0011] Figure 3 is the front view of the automobile roof mold of the utility model;
[0012] Figure 4 is the enlarged view of B of Figure 3
[0013] Figure 5 is the longitudinal section view of the automobile roof raw material after being pressed of the prior art;
[0014] Figure 6 is the longitudinal section view of the automobile roof raw material in the edge wrapping state of Figure 5
[0015] Figure 7 is the longitudinal section view of the automobile roof raw material in the edge wrapped state of Figure 6
[0016] Figure 8 is the longitudinal section view of the automobile roof raw material after being pressed of the utility model;
[0017] Figure 9 is the longitudinal section view of the automobile roof raw material in the edge wrapping state of Figure 8
[0018] Figure 10 is the longitudinal section view of the automobile roof raw material in the edge wrapped state of Figure 9
[0019] In the drawing: 1, lower mold; 2, upper mold; 3, upper mold sunroof part main body; 4, first avoiding groove; 5, upper mold sunroof part outer frame; 6, sunken pit; 7, lower mold sunroof part main body; 8, second avoiding groove; 10, upper layer; 11, lower layer; 12, sunroof; 13, flat sunroof edge upper layer; 14, flat sunroof edge lower layer; 15, convex sunroof edge upper layer; 16, convex sunroof edge lower layer. DETAILED DESCRIPTION
[0020] The utility model will be further explained in detail in combination with specific implementation manners.
[0021] For example, Figure 3 andFigure 4 As shown, this utility model provides a car roof mold for facilitating the edging of the sunroof area 12. It includes a lower mold 1, with a partially recessed bottom wall forming a sunken pit 6. A partially convex inner bottom wall of the sunken pit 6 forms the sunroof body 7 of the lower mold. The top walls of the sunroof body 7 and the lower mold 1 are at the same height. A gap is left between the outer wall of the sunroof body 7 and the inner wall of the sunken pit 6 to form a second clearance groove 8.
[0022] like Figure 1 and Figure 2 As shown, an upper mold 2 is provided above the lower mold 1. The bottom wall of the upper mold 2 is equipped with the upper mold skylight body 3 and the upper mold skylight outer frame 5. The upper mold skylight body 3 is surrounded by the upper mold skylight body 3, and the upper mold skylight body 3 is vertically aligned with the lower mold skylight body 7. The bottom walls of the upper mold skylight body 3 and the upper mold skylight outer frame 5 are at the same height. Both the upper mold skylight outer frame 5 and the mold skylight body are convex downwards, leaving a gap between them to form a first clearance groove 4. The first clearance groove 4 is vertically aligned with the second clearance groove 8, thus creating a pressure-free space between them. The first clearance groove 4 has its opening at the bottom and its bottom at the top, and the bottom of the groove is at the same height as the bottom wall of the upper mold 2. It should be noted that the upper mold 2 has a built-in heating element, which is located directly above the bottom wall of the upper mold 2 (excluding the first clearance groove 4). It can heat the bottom wall of the upper mold 2, but does not heat the first clearance groove 4. Insulating cotton is pasted on the wall of the first clearance groove 4.
[0023] The raw material for the car roof is placed on the lower mold 1 and pressed by the upper mold 2, such as... Figure 8 As shown, the sunroof part 12 of the car roof material is molded by the sunroof body 3 (see...). Figure 2 Press down onto the lower mold, sunroof body 7 (see) Figure 4 On the upper part, the hot melt adhesive on the lower layer 11 is melted by the upper mold, thus bonding the two together, making it convenient for the operator to subsequently cut off the upper and lower layers (i.e., upper layer 10 and lower layer 11) of the sunroof 12 in one go; the upper and lower layers of the car roof material, excluding the sunroof 12 and the edge of the sunroof, are pressed together by the upper mold 2 to fit the shape of the car's interior roof wall, and the hot melt adhesive on the lower layer 11 is melted by the upper mold 2, thus bonding the two together. Figure 8 As shown, the sunroof edge of the car roof material is located in the unpressurized space between the second clearance groove 8 and the first clearance groove 4, so it will not be pressed into one piece, nor will it contact the upper and lower molds 2 and 1 to prevent the hot melt adhesive from melting. The sunroof edge is not pressed and is therefore raised, including an upper raised sunroof edge 15 and a lower raised sunroof edge 16. The operator transfers the car roof material to an edge-sealing machine (not shown in the figure), and then applies adhesive to the top wall of the upper raised sunroof edge 15. The edge-sealing machine pushes the sunroof edge upwards...Figure 9 In this state, since the upper and lower layers 15 and 16 of the raised skylight edge are not bonded, the upper layer 15 of the raised skylight edge will not wrinkle due to the vertical limitation of the lower layer 16. Subsequently, together with the lower layer 16, the raised skylight edge is further turned outward by the edge-wrapping machine until the upper layer 15 is bonded to the top wall of the feeding layer 10. The lower layer 16 is then pressed onto the upper layer 15. The hot melt adhesive on the lower layer 16 is heated and melted by the edge-wrapping machine, thus bonding the lower layer 16 to the upper layer 15. This completes the edge-wrapping process. In summary, the lower layer 16 of the raised skylight edge is bent into... Figure 10 The material is then bonded to the upper layer 15 of the raised skylight edge, instead of being first bonded together and then bent as in existing technologies. Figure 9 , Figure 10 Therefore, this utility model will not cause the upper layer 15 of the raised skylight edge to wrinkle, and the edging will not easily fall apart.
[0024] The above description is merely an embodiment of this utility model and does not limit the scope of patent protection. Any non-substantial changes or substitutions made by those skilled in the art based on this utility model will still fall within the scope of patent protection.
Claims
1. A roof mold for facilitating the hemming of a roof window of an automobile, comprising an upper mold and a lower mold, the lower mold being for placing a raw material of the roof of the automobile, and the upper mold being for pressing down the raw material of the roof of the automobile on the lower mold, characterized in that: The upper mold bottom wall is provided with an upper mold skylight part main body and an upper mold skylight part outer frame, the upper mold skylight part outer frame surrounds the upper mold skylight part main body, the upper mold skylight part outer frame and the mold skylight part main body are both downward convex, a gap is left between the two to form a first avoiding groove; the lower mold bottom wall is partially downward concave to form a sunken pit, the inner bottom wall of the sunken pit is partially upward convex to form a lower mold skylight part main body, the lower mold skylight part main body is vertically aligned with the upper mold skylight part main body; a gap is left between the lower mold skylight part main body outer side wall and the sunken pit inner side wall to form a second avoiding groove, the second avoiding groove is vertically aligned with the first avoiding groove to form an unpressured space between the two. 2. The automotive roof mold of claim 1, wherein: The lower mold skylight part main body and the top wall of the lower mold are at the same height.
3. The automotive roof mold of claim 1, wherein: The upper mold skylight part main body and the bottom wall of the upper mold skylight part outer frame are at the same height.
4. The automotive roof mold of claim 3, wherein: The first avoiding groove has a lower slot opening and an upper slot bottom, the slot bottom is at the same height as the bottom wall of the upper mold.