Adjustable polyurethane adhesive pressing tool for adhesive line pressing

Abstract

The utility model relates to the technical field of automobile part processing, and discloses an adjustable polyurethane glue pressing tool for glue line pressing, which comprises a working table, an upper die and a plurality of hot air assemblies are arranged on the working table, the hot air assemblies are used for heating, adjusting supporting pieces are arranged on the hot air assemblies, and each adjusting supporting piece comprises a molded surface block and an adjusting block. The supporting face of the profile block is the same as the surface of a product inner plate in shape, the profile block is used for supporting the product inner plate, and the adjusting block is used for adjusting the height of the profile block. The structural strength of the product inner plate is fully utilized, most of the position, corresponding to the hot air assembly, of the product glue line is kept away from space, adjustable supporting is only carried out on the local position of the product inner plate, adaptation is carried out according to the actual deformation condition of the product inner plate, shape deviation caused by deformation of the product inner plate can be greatly contained, and the product quality is improved. And the debugging time of the pressing tool is shortened to 3-5 days from the original 30-40 days, so that the debugging time of the pressing tool is greatly reduced, and the qualified rate of pressing and injection molding is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile parts processing, in particular to a polyurethane glue pressing tool with adjustable glue line pressing. Background Art

[0002] With the promotion and application of new energy vehicles, range anxiety is particularly prominent. Lightweighting of vehicles is an important way to increase mileage. Replacing steel with plastic can reduce weight by 10% to 30%. Replacing metal back doors with plastic back doors is one of the application scenarios.

[0003] The inner and outer panels of a plastic back door are bonded together using polyurethane adhesive. Lamination tooling is a crucial component of the bonding process, directly impacting the product's dimensions, appearance, and performance. Polyurethane adhesive lamination tooling typically incorporates contoured supports corresponding to the adhesive line. However, due to the significant and unstable deformation of the inner panel during injection molding, this can lead to positioning failure, resulting in unstable dimensions and a low pass rate for the final product. Utility Model Content

[0004] The utility model aims to provide a polyurethane glue pressing tool with adjustable glue line pressing, so as to solve the problem that the debugging time of the pressing tool is long when pressing door panels.

[0005] The utility model is achieved through the following technical scheme: a polyurethane glue pressing tool with adjustable glue line pressing, comprising a workbench, an upper mold and a lower mold installed on the workbench, the lower mold comprising a plurality of hot air components installed on the workbench, the hot air components being used for heating, an adjustment support being installed on the hot air components, the adjustment support comprising a profile block and an adjustment block, the support surface of the profile block having the same shape as the surface of the product inner plate, the profile block being used to support the product inner plate, and the adjustment block being used to adjust the height of the profile block.

[0006] Install the inner panel of the product on the lower mold surface block, and install the outer panel of the product on the upper mold at the same time. Apply polyurethane glue on the part where the outer panel of the product is supported by the mold surface block, and then press the upper mold onto the lower mold. Due to the heating effect of the hot air component, the polyurethane glue begins to bond the inner panel and the outer panel of the product.

[0007] In order to better realize the present invention, further, the material of the profile block is 6061 aluminum alloy; the material of the adjustment block is 45 steel.

[0008] In order to better realize the present invention, further, the distance between the hot air component and the inner plate of the product is 5 mm.

[0009] In order to better realize the present utility model, further, the size of the profile block is 30mm*30mm*30mm; the adjustment block is composed of one or more gaskets, and the size of the gasket is one of 30mm*30mm*1mm, 30mm*30mm*0.5mm, 30mm*30mm*0.2mm, and 30mm*30mm*0.1mm.

[0010] In order to better realize the present invention, further, the upper mold is driven by a hydraulic press or a robot.

[0011] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0012] (1) The utility model makes full use of the structural strength of the inner plate of the product. The position of the hot air component corresponding to the product glue line is mostly avoided, and only adjustable support is provided at a local position of the inner plate of the product. It is adapted according to the actual deformation of the inner plate of the product, and can greatly accommodate the shape deviation caused by the deformation of the inner plate of the product. The debugging time of the pressing tool is shortened from the original 30 to 40 days to 3 to 5 days, which greatly reduces the debugging time of the pressing tool and improves the qualified rate of pressing and injection molding. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the lower mold structure.

[0014] Figure 2 Schematic diagram of the structure without adjusting the support member.

[0015] Figure 3 It is a schematic diagram of the structure of the adjustable support.

[0016] Among them: 1-product inner plate; 2-molding surface block; 3-adjustment block; 4-hot air component; 5-product outer plate; 6-polyurethane glue; 7-upper mold. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0019] Example 1:

[0020] This embodiment provides a polyurethane glue pressing tool with adjustable glue line pressing, specifically as follows Figure 1-Figure 3 As shown, it includes a workbench, on which an upper mold 7 and a lower mold are installed. The lower mold includes a plurality of hot air components 4 installed on the workbench, and the hot air components 4 are used for heating. Adjustment supports are installed on the hot air components 4, and the adjustment supports include a molding block 2 and an adjustment block 3. The support surface of the molding block 2 has the same shape as the surface of the product inner plate 1. The molding block 2 is used to support the product inner plate 1, and the adjustment block 3 is used to adjust the height of the molding block 2.

[0021] Install the product inner panel 1 on the lower mold surface block 2, and at the same time install the product outer panel 5 on the upper mold 7, apply polyurethane glue 6 on the part where the product outer panel 5 is supported by the mold surface block 2, and then press the upper mold 7 onto the lower mold. Due to the heating effect of the hot air component 4, the polyurethane glue 6 begins to bond the product inner panel 1 and the product outer panel 5.

[0022] Through the above settings, the structural strength of the product inner panel 1 is fully utilized, the position of the product glue line corresponding to the hot air component 4 is mostly avoided, and adjustable support is only provided at a local position of the product inner panel 1. It is adapted according to the actual deformation of the product inner panel 1, and can greatly accommodate the shape deviation caused by the deformation of the product inner panel 1. The debugging time of the pressing tooling is shortened from the original 30 to 40 days to 3 to 5 days, which greatly reduces the debugging time of the pressing tooling and improves the qualified rate of pressing and injection molding.

[0023] Example 2:

[0024] This embodiment further expands the materials of the profile block 2 and the adjustment block 3 on the basis of the embodiment 1. The material of the profile block 2 is 6061 aluminum alloy; the material of the adjustment block 3 is 45# steel.

[0025] Reasons for choosing 6061 aluminum alloy: 1. 6061 aluminum alloy is easy to cut, mill and drill, making it suitable for making support blocks with complex shapes; 2. 6061 aluminum alloy has good tensile strength and compressive strength, which can withstand the mechanical stress during the pressing process and ensure the stability of the support block in working condition; 3. A dense oxide film is easily formed on the surface of 6061 aluminum alloy, which has good corrosion resistance and can maintain a long service life in humid or corrosive environments; 4. 6061 aluminum alloy has good thermal conductivity, which allows heat to be better transferred to the polyurethane adhesive 6.

[0026] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0027] Example 3:

[0028] This embodiment is further expanded on the basis of embodiment 1. Figure 2 As shown, the distance between the hot air component 4 and the product inner plate 1 is 5 mm.

[0029] Choosing the right spacing can improve heating efficiency while ensuring the heating effect.

[0030] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0031] Example 4:

[0032] This embodiment further expands the dimensions of the profile block 2 based on Example 1, with the profile block 2 now measuring 30mm*30mm*30mm. The adjustment block 3 is composed of one or more spacers, each of which has a size of 30mm*30mm*1mm, 30mm*30mm*0.5mm, 30mm*30mm*0.2mm, or 30mm*30mm*0.1mm, adapted based on actual measured data. Adjustment blocks 3 of different specifications can be selected to support the profile block 2 according to actual needs.

[0033] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0034] Example 5:

[0035] This embodiment is a further extension of the embodiment 1, in which the upper die 7 is driven by a hydraulic press or a robot, which can provide sufficient pressure to meet various requirements during the pressing process.

[0036] The other parts of this embodiment are the same as those of the above embodiment and will not be described in detail.

[0037] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the scope of protection of the present invention.

Claims

1. A polyurethane adhesive pressing tool with adjustable adhesive line pressing, characterized by: The invention comprises a workbench, an upper mold (7) and a lower mold are installed on the workbench, the lower mold comprises a plurality of hot air components (4) installed on the workbench, the hot air components (4) are used for heating, an adjustment support is installed on the hot air components (4), the adjustment support comprises a profile block (2) and an adjustment block (3), the support surface of the profile block (2) has the same shape as the surface of the product inner plate (1), the profile block (2) is used to support the product inner plate (1), and the adjustment block (3) is used to adjust the height of the profile block (2); The product inner plate (1) is mounted on the lower mold surface block (2), and the product outer plate (5) is mounted on the upper mold (7). Polyurethane glue (6) is applied to the portion where the product outer plate (5) is supported by the mold surface block (2), and then the upper mold (7) is pressed onto the lower mold. Due to the heating effect of the hot air component (4), the polyurethane glue (6) begins to bond the product inner plate (1) and the product outer plate (5).

2. The polyurethane adhesive pressing tool with adjustable adhesive line pressing according to claim 1, characterized in that: The material of the profile block (2) is 6061 aluminum alloy; the material of the adjustment block (3) is 45# steel.

3. The polyurethane adhesive pressing tool with adjustable adhesive line pressing according to claim 1, characterized in that: The distance between the hot air component (4) and the product inner plate (1) is 5 mm.

4. The polyurethane adhesive pressing tool with adjustable adhesive line pressing according to claim 1, characterized in that: The size of the profile block (2) is 30mm*30mm*30mm; the adjustment block (3) is composed of one or more gaskets, and the size of the gasket is one of 30mm*30mm*1mm, 30mm*30mm*0.5mm, 30mm*30mm*0.2mm, and 30mm*30mm*0.1mm.

5. The polyurethane adhesive pressing tool with adjustable adhesive line pressing according to claim 1, characterized in that: The upper die (7) is driven by a hydraulic press or a robot.

Images