A window inner thermal insulation profile piece press bending forming device

Abstract

The utility model discloses a kind of window inner thermal insulation section member press bending forming devices, it is related to press bending forming technical field, to solve the problem of window inner thermal insulation section member press bending forming easy deformation, insufficient precision. The device includes the die base of top opening, the die base is equipped with pressing plate, the working surface of die base and pressing plate is all processed with matching radian face, after two die closing, forming cavity for accommodating section member is formed;To improve forming quality, inner lining strip is also provided in forming cavity, the inner lining strip is worn in section member interior, can form support to section member interior in press bending process, the radian face of this device by matching setting guarantees section member press bending radian precision, with the aid of inner lining strip, effectively avoid section member press bending and appear recess, cracking and other defects, simple structure, convenient operation, applicable to the efficient and accurate press bending forming operation of window inner thermal insulation section member.

Description

Technical Field

[0001] This utility model relates to the field of profile forming technology, specifically to a bending forming device for window internal insulation profiles. Background Technology

[0002] As a key component of the vehicle body window, the internal insulation profile for windows needs to be processed with a structure of corresponding curvature according to the installation requirements on the left and right sides of the vehicle body. Moreover, its material is mostly PVC plastic, which has both heat insulation properties and a certain degree of plasticity.

[0003] In existing technologies, the bending and forming of PVC plastic profiles mostly employs cold pressing or simplified hot pressing processes, which generally suffer from several technical defects: First, the lack of a targeted internal support structure makes the internal cavities of the profile prone to denting and collapse during bending, resulting in insufficient forming accuracy; second, the failure to accurately differentiate and position the left and right curvatures makes it prone to twisting and deformation during forming, failing to meet the requirements of vehicle body installation; third, the lack of surface protection measures makes the outer surface of the profile prone to scratches and damage during forming; fourth, unreasonable temperature control and cooling methods during hot processing easily lead to uneven softening of the profile, poor shaping effect, and springback, seriously affecting the product qualification rate. These problems not only reduce production efficiency and increase manufacturing costs, but also affect the assembly accuracy and overall thermal insulation performance of vehicle body windows. Therefore, developing a bending and forming device for window internal insulation profiles that can achieve precise curvature forming, avoid profile damage, and improve shaping effect has become an urgent technical problem to be solved in this field. Utility Model Content

[0004] The purpose of this utility model is to provide a bending and forming device for window internal insulation profiles. This device ensures the accuracy of the bending curvature of the profile by matching and setting the curvature surface, and effectively avoids defects such as dents and cracks during the bending of the profile by using the inner lining strip. It has a simple structure, is easy to operate, and is suitable for efficient and accurate bending and forming of window internal insulation profiles.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a bending and forming device for window internal insulation profiles, including a mold base with a top opening, a pressure plate provided on the mold base, and matching arc surfaces on the working surfaces of the mold base and the pressure plate, forming a forming cavity for placing the profile between the mold base and the pressure plate, and an inner lining strip provided in the forming cavity, the inner lining strip passing through the inside of the profile.

[0006] To further optimize this utility model, the following technical solutions may be preferred: Preferably, the inner lining strip has an opening groove area corresponding to the arc surface region, and the opening groove area includes a plurality of opening grooves arranged along the length direction of the inner lining strip.

[0007] Preferably, the mold base is a U-shaped structural component, the mold base includes a base plate, a left template and a right template are provided on both sides of the base plate, and a hanging ear is also provided at one end of the mold base.

[0008] Preferably, an upper surface protection plate is provided between the pressure plate and the profile component, and the upper surface protection plate is provided with a curved surface that matches the curvature of the pressure plate.

[0009] Preferably, the pressure plate, the upper surface protective plate, and the inner lining strip are symmetrically arranged in two sets, respectively forming the profile parts corresponding to the left and right sides of the window.

[0010] Preferably, an intermediate spacer is provided between two profile parts in the forming cavity, and an opening groove area II is provided on the intermediate spacer with a corresponding arc surface area. The opening groove area II includes a plurality of opening grooves II arranged along the length direction of the intermediate spacer.

[0011] This utility model has the following beneficial effects: (1) Significantly improved molding accuracy: The matching arc surface of the mold base and the pressure plate ensures the accurate arc of the profile. The inner strip provides stable support for the internal cavity of the profile. It is matched with the arc deformation requirements of the opening groove area to avoid the profile from sinking or collapsing. The middle partition strip and the opening groove area further separate the left and right profiles. Combined with the positioning of the left and right templates of the mold, the twisting phenomenon during molding is completely eliminated, and the precise installation requirements of the left and right sides of the vehicle body are met. (2) Comprehensive product quality assurance: The upper surface protection plate and the pressure plate are matched in curvature, which can effectively prevent scratches and damage to the outer surface of the profile during the molding process; PVC plastic is softened by boiling in water at 80±5℃ for 5 minutes, combined with a two-stage cooling process in a room temperature water bath, so as to achieve uniform softening and stable shaping of the profile, greatly reduce the rebound problem, and improve the product qualification rate.

[0012] (3) Production efficiency and adaptability optimization: The two sets of pressure plates, upper surface protection plate and inner lining strip are symmetrically set, which can complete the forming operation of the profile parts on the left and right sides at the same time; the U-shaped structure and hanging ear design of the mold base, combined with the F-clamping operation, simplifies the assembly process, improves production efficiency, and is suitable for batch precision processing of window internal insulation PVC profile parts. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural diagram of the bending and forming device for the internal insulation profile of this window. Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A in the middle.

[0014] The components include: 1. mold base; 2. pressure plate; 3. inner lining strip; 4. upper surface protective plate; 5. intermediate spacer strip; 6. molding cavity; 11. Base plate; 12. Left template; 13. Right template; 14. Hanging lugs; 31. Opening groove area one; 32. Opening groove one; 51. Opening groove area two; 52. Opening groove two. Detailed Implementation

[0015] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Example 1: like Figure 1 , 2 As shown, this embodiment discloses a bending and forming device for window internal insulation profiles, mainly applicable to the left and right side curvature forming of PVC plastic internal insulation profiles for vehicle windows. Its core structure includes a mold base 1, a pressure plate 2, an inner lining strip 3, an upper surface protective plate 4, and a middle spacer strip 5. These components work together to achieve precise forming of the profile. The mold base 1 is a U-shaped structure with an open top, integrally formed from a base plate 11, a left template 12, and a right template 13. The left template 12 and the right template 13 are symmetrically and vertically arranged on both sides of the base plate 11, forming a lateral positioning for the profile. Two symmetrically arranged hanging ears 14 are welded to one end of the mold base 1. The hanging ears 14 have through holes to facilitate the overall suspension and storage of the device or its connection to an external fixing structure. The working surface of the mold base 1 (i.e., the upper surface of the base plate 11 and the inner sidewalls of the left and right templates) is machined with a curved surface of a preset curvature, which matches the target curvature of the profile 7 to be formed. The pressure plate 2 is horizontally positioned above the mold base 1, and its lower surface (working surface) is also machined with a curved surface that matches the curvature of the mold base 1. After the two are closed, they form a forming cavity 6 for accommodating the profile part. The curvature tolerance of the pressure plate 2 and the mold base 1 is controlled within ±0.1mm to ensure the curvature forming accuracy of the profile part. The inner liner strip 3 is inserted into the internal cavity of the profile part. It is made of nylon PA66 and its length is the same as that of the profile part. The inner liner strip 3 has an opening groove area 31 corresponding to the curvature surface of the molding cavity 6. The opening groove area 31 consists of 8-12 opening grooves 32 evenly arranged along the length of the inner liner strip 3. The depth of the opening groove 32 is 1 / 2 the thickness of the inner liner strip 3, and the width is 5-8mm. This design allows the inner liner strip 3 to adapt to the curvature deformation requirements of the profile part without reducing the support strength, and avoids the internal depression of the profile. The upper surface protective plate 4 is positioned between the pressure plate 2 and the profile component. It is made of soft polyurethane material, with a flat surface on its upper surface and a curved surface matching the curvature of the pressure plate 2 on its lower surface. The surface roughness Ra ≤ 0.8 μm, ensuring a tight fit to the outer surface of the profile component while effectively preventing scratches during molding. To achieve synchronous processing of the left and right profile components, two sets of pressure plates 2, upper surface protective plates 4, and inner lining strips 3 are symmetrically arranged, corresponding to the molding stations of the left and right window profile components, respectively. A middle partition strip 5 is positioned between the two sets of stations. The height of the middle partition strip 5 is consistent with the height of the molding cavity 6. An opening groove area 51 is provided in the area corresponding to the curved surface. The structure of the opening groove area 51 is the same as that of the opening groove area 31, consisting of multiple opening grooves 52 arranged along the length direction. This ensures separation while adapting to the stress deformation in the curved direction, preventing mutual compression or twisting of the left and right profile components during molding. The specific operation process of this embodiment is as follows: ① Component Assembly: Following the direction shown in the diagram, insert the two sets of inner lining strips 3 into the two PVC profiles to be molded. Then, place the profiles on the corresponding positions of the mold base 1. Insert the intermediate spacer strip 5 between the two profiles. Cover the upper surface of the profiles with the upper surface protection plate 4, and finally cover with the pressure plate 2, ensuring that all components are aligned. ② Clamping and Fixing: Use 4-6 F-clamps evenly distributed on both sides of the device to firmly clamp the pressure plate 2 to the mold base 1. Control the clamping force at 5-8kN to ensure that the profiles are tightly fitted to the mold surface and do not shift. ③ Softening Treatment: Place the assembled device in boiling water at 80±5℃ and immerse it for 5 minutes to fully soften the PVC profiles. ④ Shaping and Cooling: Remove the device from the boiling water and quickly place it in a room temperature water bath 1 for 2 minutes to cool. Then, remove the profiles and transfer them to a room temperature water bath 2 to continue cooling for 3 minutes to complete the shaping process. ⑤ Disassembly and Removal: Loosen the F clamp and remove the pressure plate 2, upper surface protective plate 4, middle spacer 5 and inner lining strip 3 in sequence to obtain the internal insulation profile for the left and right side windows that meets the size requirements. This implementation method effectively solves the problems of low molding accuracy, easy product damage, and poor production efficiency in the prior art through precise structural design and standardized operation process. It can realize the batch precision processing of PVC profile parts and has significant practical value. Finally, it should be noted that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A bending and forming device for internal thermal insulation profiles for windows, characterized in that: The mold base includes a top opening and a pressure plate is provided on the mold base. The working surfaces of the mold base and the pressure plate are provided with matching arc surfaces. A forming cavity for placing profile parts is formed between the mold base and the pressure plate. An inner lining strip is also provided in the forming cavity and passes through the inside of the profile parts.

2. The bending and forming device for window internal insulation profiles according to claim 1, characterized in that: An opening groove area is provided on the inner lining strip corresponding to the arc surface area, and the opening groove area includes multiple opening grooves arranged along the length direction of the inner lining strip.

3. The bending and forming device for window internal insulation profiles according to claim 1, characterized in that: The mold base is a U-shaped structural component. The mold base includes a base plate, and a left template and a right template are provided on both sides of the base plate. A hanging ear is also provided at one end of the mold base.

4. The bending and forming device for window internal insulation profiles according to claim 1, characterized in that: An upper surface protection plate is also provided between the pressure plate and the profile component, and the upper surface protection plate is provided with a curved surface that matches the curvature of the pressure plate.

5. The bending and forming device for window internal insulation profiles according to claim 4, characterized in that: The pressure plate, upper surface protective plate, and inner lining strip are symmetrically arranged in two sets, respectively forming the profile parts corresponding to the left and right sides of the window.

6. The bending and forming device for window internal insulation profiles according to claim 5, characterized in that: An intermediate spacer is provided between two corresponding profile parts in the forming cavity. An opening groove area II is provided on the intermediate spacer with a corresponding arc surface area. The opening groove area II includes multiple opening grooves II arranged along the length direction of the intermediate spacer.

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