PHC foaming anti-wrinkling tool structure

Abstract

The utility model belongs to the technical field of PHC foaming (honeycomb paper foaming) for automobiles, and particularly relates to a PHC foaming anti-wrinkling tool structure which comprises a box cover upper die, a plurality of metal insertion teeth and a box cover lower die, the metal insertion teeth are fixed on the front side edge, the rear side edge, the left side edge and the right side edge of the box cover upper die, and the outer sides of the metal insertion teeth protrude out of the box cover upper die. A box cover is arranged in the box cover upper die and the box cover lower die, and when the box cover upper die and the box cover lower die are closed, the metal insertion teeth on the box cover upper die are hung on the side edge of the box cover, and the metal insertion teeth are partially in lap joint with the box cover lower die. The metal gear shaper is simple in structure, the metal gear shaper is adopted, an auxiliary function is added in the production process, the optimal state of a product is achieved, and the final customer requirements are met.

Description

Technical Field

[0001] This utility model belongs to the field of automotive PHC foaming (honeycomb paper foaming) technology, specifically relating to a PHC foaming anti-wrinkle tooling structure. Background Technology

[0002] Commercial vehicle interiors are becoming increasingly stylish and aesthetically pleasing, requiring a wider range of molding processes to meet these demands. Previously, only exterior areas had high surface quality requirements, while less frequently seen interior areas had relatively lower requirements. However, with a younger customer base and higher standards of quality, these demands are now much higher. For products involving PHC (Producer-Consumer Chromium Harvest) processes, the manufacturing process and product structure result in noticeable wrinkles on the surface, severely impacting surface quality. Therefore, it is imperative to improve the structure of existing molds to address this issue. Utility Model Content

[0003] To address the aforementioned problems in the existing technology, this utility model provides a PHC foaming anti-wrinkle tooling structure, which uses metal inserts to add auxiliary functions during the production process, achieving the optimal state of the product and meeting the needs of the end customer.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a PHC foaming anti-wrinkle tooling structure, including an upper mold for a box cover, several metal protrusions, and a lower mold for a box cover. Several metal protrusions are fixed on the front and rear sides and left and right sides of the upper mold for the box cover. The outer sides of the metal protrusions protrude outside the upper mold for the box cover. A box cover is provided in the upper mold for the box cover and the lower mold for the box cover. When the upper mold for the box cover and the lower mold for the box cover are closed, the metal protrusions on the upper mold for the box cover hook onto the side of the box cover and the metal protrusions partially overlap the lower mold for the box cover.

[0005] Furthermore, the lid is equipped with a handle, and the metal protrusions on the front and rear sides are positioned next to the straight lines on the upper mold of the lid corresponding to the two sides of the handle. The distance from the metal protrusions on the front and rear sides to the straight lines on the upper mold of the lid corresponding to the side contours of the handle is b. The upper mold of the lid is equipped with two metal protrusions on each of the left and right sides, and the distance from the metal protrusions on the left and right sides to the straight lines on the upper mold corresponding to the lid boundary is c.

[0006] Furthermore, the width of the metal insert is d, the pitch of the metal insert is e, the overlap distance between the metal insert and the lower mold of the box cover is f, the thickness of the metal insert is g, one side of the upper tooth of the metal insert is flipped outward towards the upper mold of the box cover, and the outward flip angle of the metal insert is h.

[0007] Furthermore, the metal insert has an elongated hole, and the metal insert is fixed to the upper mold of the box cover by bolts passing through the elongated hole.

[0008] Compared with the prior art, the advantages of this utility model are: the utility model has a simple structure, and the metal insert is fixed on the upper mold of the box cover. When the mold is closed, the metal insert catches the peripheral material of the box cover, so that the non-woven fabric on the periphery of the box cover will not shrink inward during the mold closing process. The pressing area of ​​the handle on the box cover is formed in place by the stretchability of the non-woven fabric, which is not easy to form wrinkles, and finally achieves the qualified back state of the product; the tooling cost of this utility model is low, and it meets the requirements of mass production while ensuring product quality. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of the box cover product of this utility model;

[0010] Figure 2 for Figure 1 Sectional view at point AA;

[0011] Figure 3 This is a schematic diagram of the structure of the box cover of this utility model;

[0012] Figure 4 This is a schematic diagram of the upper mold structure of the box lid of this utility model;

[0013] Figure 5 This is a front side view of the upper mold of the box cover of this utility model;

[0014] Figure 6 This is a side view of the left side of the upper mold of the box cover of this utility model;

[0015] Figure 7 This is a schematic diagram of the overall structure of the box lid mold of this utility model;

[0016] Figure 8 This is a bottom view of the box lid mold of this utility model;

[0017] Figure 9 for Figure 8 Schematic diagram of the cross-sectional structure of the mold at section BB;

[0018] Figure 10 for Figure 8 A schematic diagram of the mold's state structure when the mold is closed at point DD. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This embodiment is an improvement to the mold used in the production of box lid 1, including but not limited to using the principles of this embodiment to produce other products on other molds.

[0021] Please see Figure 1-2 This refers to the external structure of the box lid 1. The box lid 1 is equipped with a handle 2. Please refer to [link / reference]. Figure 3 The lid 1 is composed of non-woven fabric 3, first fiberglass felt 4, honeycomb paper 5, second fiberglass felt 6 and PVC skin 7 stacked from top to bottom. The depth of the handle 2 on the lid 1 is a, where a > 10 mm.

[0022] The current production process for the box lid 1 is as follows: First, the PVC outer skin 7 is laid flat on the lower mold 10 of the box lid; second, the non-woven fabric 3, the first fiberglass mat 4, the honeycomb paper 5, and the second fiberglass mat 6 are laid flat and stacked together from top to bottom, and then polyurethane foam is evenly sprayed on both sides using equipment. After completion, it is placed in the position of the lower mold 10 of the box lid using clamping arms; third, the upper mold 8 of the box lid is closed to the lower mold 10 of the box lid using a hydraulic press, so that it completes the foaming in the mold cavity; fourth, after the set time is reached, the upper mold 8 of the box lid is opened by the hydraulic press, and the box lid 1 product is taken out. In this production process, because the handle 2 on the box lid 1 is relatively deep, when the mold is closed in the third step, the position of the handle 2 on the upper mold 8 of the box lid is a recessed part and the position of the handle 2 on the lower mold 10 of the box lid is a protruding part. The two are squeezed against each other, causing the non-woven fabric 3 to stretch and shrink significantly, resulting in obvious wrinkles around the edges. After the fourth step is completed, these wrinkles are reflected on the inner surface of the product, which particularly affects the appearance.

[0023] Please see Figure 4-10 This utility model provides the following technical solution: a PHC foam anti-wrinkle tooling structure, including an upper mold 8 for a box cover, a plurality of metal protrusions 9, and a lower mold 10 for a box cover. The plurality of metal protrusions 9 are fixed on the front and rear sides and the left and right sides of the upper mold 8 for the box cover. The number of metal protrusions 9 on the front and rear sides of the upper mold 8 for the box cover is the same, and the number of metal protrusions 9 on the left and right sides of the upper mold 8 for the box cover is also the same. The outer side of the metal protrusions protrudes outside the upper mold 8 for the box cover, that is, one side of the upper tooth of the metal protrusion protrudes outside the side of the upper mold 8 for the box cover. A box cover 1 is provided in the upper mold 8 for the box cover and the lower mold 10 for the box cover. The components of the lid 1 are laid flat in the lower mold 10, and then the upper mold 8 is pressed down. After foaming in the mold cavity, the lid 1 product is formed. When the upper mold 8 and the lower mold 10 are closed, the metal protrusions 9 on the upper mold 8 hook onto the side of the lid 1 and partially overlap the lower mold 10. The metal protrusions 9 pierce from the side of the upper mold 8 to the side of the lower mold 10, thus hooking onto the side of the lid 1. This prevents the components of the lid 1 from shrinking inward, making it less likely to form wrinkles and not affecting the appearance of the inner side of the lid 1.

[0024] Specifically, a handle 2 is provided on the lid 1. Please refer to [link / reference]. Figure 4The metal inserts 9 on the front and rear sides are positioned next to the straight lines on the sides of the corresponding handles 2 on the upper mold 8 of the lid. Since there are multiple lids 1 and multiple handles 2 on the upper mold 8 of the lid, each handle 2 on the upper mold 8 of the lid will have two metal inserts 9 on the front side and two metal inserts 9 on the rear side. The distance from the metal inserts 9 on the front and rear sides to the straight lines on the side contours of the corresponding handles 2 on the upper mold 8 of the lid is b, and b is set to 20mm, which helps to improve the aesthetics of the handles 2 on the lid 1. Two metal inserts 9 are set on each of the left and right sides of the upper mold 8 of the lid. The distance from the metal inserts 9 on the left and right sides to the straight lines on the corresponding lid 1 boundary on the upper mold 8 of the lid is c, and c is set to 10mm, which makes the non-woven fabric 3 on the upper and lower sides of the lid 1 taut, which helps to improve the aesthetics of the upper and lower sides of the lid 1.

[0025] Specifically, the width of the metal insert 9 is d, which is set to 120mm. The tooth pitch of the metal insert 9 is e, which is set to 20-30mm. Generally, 5-6 teeth are evenly distributed on the metal insert 9, and the tooth pitch is evenly adjusted according to the number of teeth. This is set according to the needs of different products, which can effectively hold the side of the product and prevent the material of the product from shrinking inward. The overlap distance between the metal insert 9 and the lower mold 10 of the box cover is f, which is set to 30-35mm. In this embodiment, the overlap distance between the metal insert 9 and the lower mold 10 of the box cover is set according to the depth of the handle 2, which reaches a depth of 35mm. The thickness of the metal insert 9 is g, which is set to 4-5mm. The thickness of the metal insert 9 is set to ensure its strength. One side of the upper tooth of the metal insert 9 is flipped outward towards the upper mold 8 of the box cover. The outward flip angle of the metal insert 9 is h, which is set to 5-8 degrees. This is to prevent the teeth on the metal insert 9 from hitting the lower mold 10 of the box cover and to prevent damage to the metal insert 9.

[0026] Specifically, the metal insert 9 is provided with an elongated hole. The metal insert 9 is fixed to the upper mold 8 of the box cover by bolts passing through the elongated hole 91. The elongated hole is designed so that the distance of the metal insert 9 extending out of the side of the upper mold 8 of the box cover can be adjusted later.

[0027] The operation process of this utility model is as follows: First, the PVC outer skin 7 is laid flat on the lower mold 10 of the box lid; Second, the non-woven fabric 3, the first fiberglass mat 4, the honeycomb paper 5, and the second fiberglass mat 6 are laid flat and stacked together from top to bottom, and then polyurethane foam material is evenly sprayed on both sides using equipment. After completion, it is placed in the position of the lower mold 10 of the box lid using clamping arms; Third, the upper mold 8 of the box lid is closed to the lower mold 10 of the box lid using a hydraulic press, so that foaming is completed in the mold cavity. When closing the mold, if... Figure 10As shown, the area of ​​the handle 2 is squeezed, and the surrounding non-woven fabric 3 and other materials are held by the metal inserts 9. During the mold closing process, the surrounding non-woven fabric 3 will not shrink inward. The squeezed area of ​​the handle 2 is formed in place by the stretching of the non-woven fabric 3, and it is not easy to form wrinkles. In the fourth step, after the set time is reached, the upper mold 8 of the box cover is opened by the hydraulic press, and the box cover 1 product is taken out.

[0028] This utility model has a simple and reliable structure, requires less tooling cost, and meets the requirements for mass production while ensuring product quality in the early stages.

[0029] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A PHC foam anti-wrinkle tooling structure, characterized in that, The box includes an upper mold (8), several metal protrusions (9), and a lower mold (10). The metal protrusions (9) are fixed on the front and rear sides and left and right sides of the upper mold (8). The outer side of the metal protrusions (9) protrudes out of the upper mold (8). A box cover (1) is provided in the upper mold (8) and the lower mold (10). When the upper mold (8) and the lower mold (10) are closed, the metal protrusions (9) on the upper mold (8) hook the side of the box cover (1) and the metal protrusions (9) partially overlap the lower mold (10).

2. The PHC foam anti-wrinkle tooling structure according to claim 1, characterized in that, The lid (1) is provided with a handle (2). The metal inserts (9) on the front and rear sides are located next to the straight line on the upper mold (8) of the lid corresponding to the outline of the handle (2). The distance from the metal inserts (9) on the front and rear sides to the straight line on the upper mold (8) of the lid corresponding to the outline of the handle (2) is b. The upper mold (8) of the lid is provided with two metal inserts (9) on each of the left and right sides. The distance from the metal inserts (9) on the left and right sides to the straight line on the upper mold (8) of the lid corresponding to the boundary of the lid (1) is c.

3. The PHC foam anti-wrinkle tooling structure according to claim 2, characterized in that, The width of the metal insert (9) is d, the tooth pitch of the metal insert (9) is e, the overlap distance between the metal insert (9) and the lower mold (10) of the box cover is f, the thickness of the metal insert (9) is g, one side of the upper tooth of the metal insert (9) is flipped outward towards the upper mold (8) of the box cover, and the outward flip angle of the metal insert (9) is h.

4. The PHC foam anti-wrinkle tooling structure according to claim 3, characterized in that, The metal insert (9) is provided with an elongated hole, and the metal insert (9) is fixed to the upper mold (8) of the box cover by bolts passing through the elongated hole.

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