Novel passenger car top cover negative pressure forming bonding device

Abstract

The utility model relates to the technical field of negative pressure forming, in particular to a novel passenger car top cover negative pressure forming bonding device. The forming and bonding tool sealing device comprises a forming and bonding tool positioning unit and a forming and bonding tool sealing unit which is installed in a sliding fit mode with the forming and bonding tool positioning unit. The forming bonding tool positioning unit comprises a positioning frame, a profiling die detachably installed on the positioning frame, a sealing pressing edge arranged on the periphery of the top of the positioning frame, and vent valves arranged on the periphery of the positioning frame. The forming bonding tool sealing unit comprises a sealing frame, vacuum cloth arranged on the sealing frame and a plurality of pressing air cylinders arranged on the sealing frame, and the pressing air cylinders are arranged above the vacuum cloth. The negative pressure forming device has the beneficial effects that the negative pressure forming principle is utilized to enable a product to be continuously and uniformly stressed and pressure-maintained, so that the quality of the product in a bonding process and the surface flatness of the product are effectively ensured.

Description

Technical Field

[0001] This utility model relates to the field of negative pressure molding technology, and in particular to a novel negative pressure molding and bonding device for bus roofs. Background Technology

[0002] Traditional bus roofs are typically made by bending and welding steel pipes. The frame is welded first, and then the outer skin of the roof is glued / welded to the outside of the frame. After the entire vehicle is assembled, the inner skin and heat insulation layer are installed.

[0003] With the popularization of new energy buses, new lightweight materials and new connection processes are beginning to bring about groundbreaking innovations in traditional vehicle body structures. Currently, lightweight bus body structures using aluminum alloy profiles instead of steel profiles are very mature, with over 10 years of application cases in China. Furthermore, aluminum + non-metallic composite material roof structures derived from aluminum profile body structures are also being gradually promoted and applied. The new bus roof structure mainly includes components such as outer skin, inner skin, intermediate non-metallic filling layer, and intermediate reinforcing crossbeams.

[0004] Therefore, a new type of negative pressure molding and bonding device for bus roofs needs to be designed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a novel negative pressure molding and bonding device for bus roofs, in order to overcome the aforementioned shortcomings of the existing technology.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A novel negative pressure molding and bonding device for bus roofs includes a molding and bonding fixture positioning unit and a molding and bonding fixture sealing unit that can be slidably installed with the positioning unit. The positioning unit includes a positioning frame, a mold detachably mounted on the positioning frame, a sealing edge disposed around the top of the positioning frame, and vent valves disposed around the positioning frame. The sealing unit includes a sealing frame, a vacuum cloth disposed on the sealing frame, and a plurality of pressing cylinders disposed on the sealing frame. The pressing cylinders are disposed above the vacuum cloth, and guide rails are provided on both sides of the sealing frame.

[0008] Preferably, the vent valve is connected to the air pipe of the vacuum equipment, and casters are also provided around the bottom of the positioning frame.

[0009] Preferably, a number of horizontal adjustment mechanisms are also provided around the bottom of the positioning frame. The horizontal adjustment mechanism includes a fixed base plate fixed to the bottom of the positioning frame and an adjustable plate installed on the bottom of the fixed base plate by bolts and screws.

[0010] Preferably, pulleys are provided on the inner wall of the guide rail.

[0011] Preferably, the clamping cylinders are evenly distributed around the sealing frame.

[0012] Preferably, the width of the sealing frame is greater than the width of the positioning frame.

[0013] The beneficial effects of this utility model are as follows: This technical solution, by setting a contour mold, can achieve one-time bonding and integration of parts made of various materials such as metal plates, metal profiles, non-metallic materials such as PET / extruded boards, and necessary embedded parts, and achieve the product's designed curved or flat surface state; the use of negative pressure molding principle ensures that the product is continuously and evenly stressed and pressurized, effectively guaranteeing the quality of the product bonding process and the flatness of the product surface; the negative pressure molding bonding tooling described in this utility model is different from the traditional process of using welding, bolt connection, foaming, etc. to produce bus roof products, realizing intensive production and improving production efficiency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the positioning unit structure of a novel negative pressure molding and bonding device for bus roofs according to this utility model.

[0015] Figure 2 This is a schematic diagram of the horizontal adjustment mechanism of a novel negative pressure molding and bonding device for bus roofs according to this utility model.

[0016] Figure 3 This is a schematic diagram of the sealing unit of the molding and bonding tooling of a novel negative pressure molding and bonding device for bus roofs according to this utility model.

[0017] Figure 4 This is a schematic diagram of the pressing cylinder of a novel negative pressure molding and bonding device for bus roofs according to this utility model.

[0018] Figure 5 This is a schematic diagram of the negative pressure molding and bonding fixture in the non-tooling state of a novel negative pressure molding and bonding device for bus roofs according to this utility model.

[0019] Figure 6 This is a schematic diagram illustrating the working state of a novel negative pressure molding and bonding device for bus roofs according to this utility model.

[0020] In the diagram: 1. Molding and bonding fixture positioning unit; 2. Molding and bonding fixture sealing unit; 11. Positioning frame; 12. Copying mold; 13. Sealing edge; 14. Vent valve; 15. Casters; 16. Horizontal adjustment mechanism; 161. Fixed base plate; 162. Bolt; 163. Adjustable plate; 21. Sealing frame; 22. Vacuum cloth; 23. Pressing cylinder; 24. Guide rail. Detailed Implementation

[0021] 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.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 this 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 this utility model.

[0023] Reference Figures 1 to 4 A novel negative pressure molding and bonding device for bus roofs includes a molding and bonding fixture positioning unit 1 and a molding and bonding fixture sealing unit 2 that can be slidably fitted to the molding and bonding fixture positioning unit.

[0024] The molding and bonding tooling positioning unit includes a positioning frame 11, a contour mold 12 detachably mounted on the positioning frame, a sealing pressure edge 13 disposed around the top of the positioning frame, and a vent valve 14 disposed around the positioning frame.

[0025] The molding die is detachable, allowing for easy replacement with different models and making it suitable for various structures; the sealing edge is equipped with elastic sealing material.

[0026] The vent valve is connected to the air pipe of the vacuum equipment; the negative pressure molding and bonding fixture relies on the negative pressure provided by the external vacuum equipment, and a vent valve is provided on the positioning unit for connection with the vacuum pump, and can be opened or closed independently as needed.

[0027] Casters 15 are also provided around the bottom of the positioning frame for moving the tooling.

[0028] Several sets of horizontal adjustment mechanisms 16 are also provided around the bottom of the positioning frame. The horizontal adjustment mechanism includes a fixed base plate 161 fixed to the bottom of the positioning frame and an adjustable plate 163 installed on the bottom of the fixed base plate by bolts 162 and screws. The distance between the adjustable plate and the fixed base plate can be adjusted by manually turning the nut, thereby adjusting the level.

[0029] The molding and bonding tooling sealing unit 2 includes a sealing frame 21, a vacuum cloth 22 disposed on the sealing frame, and a plurality of pressing cylinders 23 disposed on the sealing frame 21. The pressing cylinders are disposed above the vacuum cloth 22. Guide rails 24 are disposed on both sides of the sealing frame 21, and pulleys are disposed on the inner wall of the guide rails.

[0030] The vacuum cloth 22 is an elastic vacuum cloth that can fit closely to the shape of the product to ensure uniform stress on the product; the vacuum arrangement is above the conforming mold, and a closed space is formed between the two to construct a negative pressure cavity.

[0031] The clamping cylinders 23 are evenly distributed around the sealing frame 21;

[0032] The width of the sealing frame 21 is greater than the width of the positioning frame 11;

[0033] refer to Figure 5 , 6 In this implementation, the molding and bonding fixture sealing unit 2 is first moved along the guide rail 24 to one side of the molding and bonding fixture positioning unit 1, and then the mold 12 is installed and the adhesive application process is completed. After adhesive application, the product positioning is confirmed to be accurate and the workpiece and the mold 12 structure are reliably fitted. Next, the molding and bonding fixture sealing unit 2 is moved along the guide rail to directly above the molding and bonding fixture positioning unit 1, so that the sealing frame and the sealing edge are aligned, and then the clamping cylinder is activated. Under the action of the cylinder, the sealing frame is tightly pressed against the sealing edge, and the vacuum cloth is freely covered on the product workpiece. After the sealing frame is clamped, the vacuum equipment is activated to quickly extract the air from the sealing cavity of the fixture to form a vacuum state. At this time, the vacuum cloth forms a uniform pressing force on the product surface, so that the product and the mold are tightly fitted to achieve the molding effect. After the equipment is turned on, it enters the pressure holding stage according to the process requirements and holds the pressure for a sufficient time until the adhesive is cured to a state where it can be demolded. Thus, the product bonding and molding work is completed.

[0034] The advantages of this utility model are that, by setting up a contour mold, it can achieve one-time bonding and integration of parts made of various materials such as metal plates, metal profiles, non-metallic materials such as PET / extruded boards, and necessary embedded parts, and achieve the product's designed curved or flat surface state; by utilizing the principle of negative pressure molding, the product is subjected to continuous and uniform force and pressure, effectively ensuring the quality of the product bonding process and the flatness of the product surface; the negative pressure molding bonding tooling described in this utility model is different from the traditional process of using welding, bolt connection, foaming and other processes to produce bus roof products, realizing intensive production and improving production efficiency.

[0035] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A novel negative pressure molding and bonding device for bus roofs, characterized in that: It includes a molding and bonding fixture positioning unit and a molding and bonding fixture sealing unit that can be slidably installed with the molding and bonding fixture positioning unit. The molding and bonding fixture positioning unit includes a positioning frame, a mold that can be detachably installed on the positioning frame, a sealing pressure edge disposed around the top of the positioning frame, and a vent valve disposed around the positioning frame. The molding and bonding fixture sealing unit includes a sealing frame, a vacuum cloth disposed on the sealing frame, and a plurality of pressing cylinders disposed on the sealing frame. The pressing cylinders are disposed above the vacuum cloth, and guide rails are disposed on both sides of the sealing frame.

2. The novel negative pressure molding and bonding device for bus roofs according to claim 1, characterized in that: The vent valve is connected to the air pipe of the vacuum equipment, and casters are also provided around the bottom of the positioning frame.

3. The novel negative pressure molding and bonding device for bus roofs according to claim 2, characterized in that: Several sets of horizontal adjustment mechanisms are also provided around the bottom of the positioning frame. The horizontal adjustment mechanism includes a fixed base plate fixed to the bottom of the positioning frame and an adjustable plate installed on the bottom of the fixed base plate by bolts and screws.

4. The novel negative pressure molding and bonding device for bus roofs according to claim 1, characterized in that: Pullers are installed on the inner wall of the guide rail.

5. A novel negative pressure molding and bonding device for bus roofs according to claim 1, characterized in that: The clamping cylinders are evenly distributed around the sealing frame.

6. The novel negative pressure molding and bonding device for bus roofs according to claim 1, characterized in that: The width of the sealing frame is greater than the width of the positioning frame.

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