Positioning assistive device for coating and paint spraying of four doors of automobile

Abstract

The utility model relates to an auxiliary positioning tool for coating and paint spraying of four doors of an automobile. The auxiliary positioning tool comprises an auxiliary tool body, an auxiliary tool base, auxiliary hole mounting plugs, door frame spigot edge clamping grooves and magnetic buckles. One side of the auxiliary tool main body extends outwards along the side edge of the auxiliary tool main body to form the auxiliary tool base, and the auxiliary tool base extends outwards to form the auxiliary hole mounting plug; the door frame spigot edge clamping groove is formed in the other side of the auxiliary tool main body; a magnetic attraction buckle attracted to a front door or a rear door is arranged at the position, away from the door frame spigot edge clamping groove, of the other side of the assistive device body. The positioning assistive device provided by the utility model has a simple structure, ensures that the mounting and dismounting operations are simple and the fixation is firm in the spraying process of the inner and outer surfaces of the four doors of the automobile and the door frames of the four doors, can effectively fix the four doors of the automobile, avoids the problems of shaking, position deviation and the like, ensures the coating quality of the four doors, and improves the qualified rate of the four doors and the door frames of the four doors.

Description

Technical Field

[0001] This utility model relates to the field of automotive painting technology, and in particular to a positioning aid for painting four doors of automobiles. Background Technology

[0002] Currently, automobile manufacturers use painting tools during the painting process to improve the painting quality of the car body and related structural components. The structure and usage of these painting tools vary depending on the vehicle model and the area to be painted.

[0003] Traditional automotive four-door painting relies on two auxiliary devices: limiters and isolators, to ensure painting quality. Currently, many car factories use robotic internal painting. Some painting methods using spring limiters cannot achieve automatic opening of the four doors, thus preventing automatic painting of the car's four doors.

[0004] Some automakers use a painting method that combines four-door hinge limiters with door sill isolators. This method has drawbacks such as complex design, large size of the accessories, and cumbersome installation. Especially after repeated use, paint easily accumulates and is difficult to clean. Furthermore, the bolts are easily damaged after repeated use, making installation and disassembly difficult. This results in numerous discolored particles on the four door sills and difficulties in installing and removing the accessories, reducing the pass rate of the four doors and door sills and significantly hindering production speed.

[0005] Some car manufacturers have also designed and developed new four-door painting and spraying fixtures, but the results have not been ideal. Some designs are complex, difficult to operate, and time-consuming to install and remove, affecting production rhythm; others are cumbersome to manufacture and have problems such as poor durability, poor versatility, and high manufacturing costs. Summary of the Invention

[0006] The technical problem to be solved by this utility model is to provide a positioning auxiliary tool for painting four doors of automobiles, addressing the above-mentioned shortcomings.

[0007] This utility model is achieved through the following technical solution:

[0008] A positioning aid for painting four doors of an automobile includes an aid body, an aid base, a process hole mounting plug, a door frame stop edge groove, and a magnetic snap fastener. The aid base extends outward from one side of the aid body, and the process hole mounting plug extends outward from the aid base. The door frame stop edge groove is provided on the other side of the aid body, with the opening direction of the door frame stop edge groove aligned with the direction of the process hole mounting plug. A magnetic snap fastener for engaging with the front or rear door is provided on the other side of the aid body, away from the door frame stop edge groove.

[0009] Furthermore, in the aforementioned positioning aid for painting four doors of a car, when the four doors of the car are being painted, the process hole mounting plug is inserted into the process hole inside the B-pillar and the rear side panel, the door frame stop edge slot is engaged with the stop edge of the front door or rear door frame to fasten the front door or rear door, and the magnetic buckle is attracted to the inside of the front door or rear door.

[0010] Furthermore, in the aforementioned positioning aid for painting four doors of an automobile, the relative position and angle of the magnetic buckle and the door frame stop edge groove control the distance between the front door or rear door and the front door or rear door frame.

[0011] Furthermore, the aforementioned positioning aid for painting four doors of an automobile has front and rear door anti-misalignment markings on its main body.

[0012] Furthermore, in the aforementioned positioning aid for painting four doors of an automobile, the magnetic buckle is wrapped with a protective sleeve.

[0013] Furthermore, in the aforementioned positioning fixture for painting four doors of an automobile, the width of the fixture base is greater than the width of the process hole mounting plug.

[0014] The advantages and effects of this utility model are:

[0015] 1. The positioning fixture for automotive four-door painting provided by this utility model uses a process hole mounting plug, a door frame stop edge groove, and a magnetic buckle to fix the four automotive doors (two front doors and two rear doors). It utilizes the process holes on the B-pillar and the inner side of the rear panel, along with the stop edges of the four door frames, as mounting points, effectively preventing the four doors from sticking to the door frames and providing isolation. This positioning fixture has a simple structure and ensures simple installation and disassembly during the painting process on the inner and outer surfaces of the four automotive doors and the door frames, providing a secure fixation. This positioning fixture effectively fixes the four automotive doors, preventing shaking and positional displacement during processes such as moving, rotating, lifting, and moving up and down in the oven, thus ensuring the painting quality of the four doors and improving the pass rate of the four doors and their frames.

[0016] 2. The positioning aid provided by this utility model remains stable after repeated use, which can reduce the labor intensity of personnel, improve production efficiency, reduce the cost of automotive four-door painting aids, and improve the quality of topcoat painting.

[0017] 3. The positioning aid provided by this utility model has good versatility and is applicable to different car models. It can be installed on both front and rear doors and is suitable for both robotic automatic painting production lines and manual painting production lines, saving the manufacturing cost of four-door positioning aids. Attached Figure Description

[0018] Figure 1 This invention provides a schematic diagram of the positioning fixture for painting four doors of automobiles.

[0019] Figure 2 This diagram illustrates the application of the positioning aid for painting four doors of automobiles provided by this utility model.

[0020] Explanation of reference numerals in the attached drawings: 10-positioning aid, 1-process hole mounting plug, 2-aid base, 3-door frame stop edge slot, 4-front and rear door installation error prevention mark, 5-magnetic buckle, 6-protective cover, 7-aid body. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of the embodiments of this utility model will be described in more detail below with reference to the accompanying drawings. The described embodiments are only some, not all, of the embodiments of this utility model. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. The embodiments of this utility model will be described in detail below with reference to the accompanying drawings:

[0022] In the description of this utility model, it should be understood that, unless otherwise stated, "a plurality of" means two or more; the terms "center," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation on the scope of protection of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "joined" should be interpreted broadly, for example, as fixed connections, detachable connections, or integral connections; they can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0023] Figure 1 This diagram illustrates the structure of a positioning aid for painting four doors of an automobile provided by this utility model. The positioning aid 10 includes an aid body 7, an aid base 2, a process hole mounting plug 1, a door frame stop edge groove 3, and a magnetic buckle 5. The aid body 7 is a plate-like structure, having one opposite side and another side, i.e. Figure 1 The main body 7 of the assistive device has an upper and lower surface; it also has a opposite side and another side, namely Figure 1 The left and right sides of the main body 7 of the assistive device, with the left and right sides forming a parallel or non-parallel structure. One side of the main body 7 along its side edge ( Figure 1 The auxiliary fixture base 2 extends outward from the left side of the main body 7, and the auxiliary fixture base 2 extends outward to form a process hole for mounting the plug 1. For example... Figure 2 As shown, the process hole mounting plug 1 is used to insert into the process hole inside the B-pillar and rear side panel to position the positioning auxiliary fixture. The shape and size of the process hole mounting plug 1 and the auxiliary fixture base 2 are set according to the shape and size of the process hole inside the B-pillar and rear side panel and the inner side of the front or rear door frame stop edge. Specifically, the size of the process hole mounting plug 1 matches the process hole inside the B-pillar and rear side panel. The process hole inside the B-pillar and rear side panel should be a small hole with a diameter of about 5mm to facilitate stable positioning and firm installation. The inner structure of the auxiliary fixture base 2 is set according to the inner structure of the B-pillar and rear side panel, and the inner side of the auxiliary fixture base 2 is stably fitted to the inner side of the B-pillar and rear side panel. The width of the auxiliary fixture base 2 is greater than the width of the process hole mounting plug 1, making the structure more stable. The other side of the auxiliary fixture body 7 ( Figure 1 A door frame stop edge groove 3 is provided on the right side of the main body 7 of the auxiliary fixture. For example... Figure 2 As shown, the door frame stop edge slot 3 is used to snap onto the stop edge of the front or rear door frame, and works with the process hole mounting plug 1 to fix the positioning accessory to the front or rear door frame. Specifically, the door frame stop edge slot 3 is a through slot from one side of the accessory body 7 to the other side, and its opening direction is in the same direction as the direction of the process hole mounting plug 1. This same direction means approximately the same direction, and the extension line of the opening direction of the door frame stop edge slot 3 is parallel or not parallel to the extension line of the direction of the process hole mounting plug 1. The other side of the accessory body 7 ( Figure 1 A magnetic latch 5, which can be attracted to the front or rear door, is installed on the right side of the main body 7 of the auxiliary fixture, away from the door frame stop edge slot 3. The relative position and angle between the magnetic latch 5 and the door frame stop edge slot 3 control the distance between the front or rear door and the door frame. Specifically, the magnetic latch 5 is a cylindrical structure. The angle formed by the height line of this cylinder and the extension line of the opening direction of the door frame stop edge slot 3, as well as the position of the magnetic latch 5 relative to the door frame stop edge slot 3, can be set according to the actual required distance between the front or rear door and the door frame, the car model, etc.

[0024] When painting the four doors of a car, the assembly process of this positioning fixture is as follows: the process hole mounting plug 1 is inserted into the process hole on the B-pillar and the inner side of the rear panel; the door frame stop edge slot 3 is engaged with the stop edge of the front or rear door frame, fastening the front or rear door; and the magnetic buckle 5 is stably attracted to the inner side of the front or rear door. Under the action of this positioning fixture, the front and rear doors are fixed. By rationally designing the size and magnetic force of the magnetic buckle 5, the firmness of the attraction is controlled. By rationally designing the relative position and angle between the magnetic buckle 5 and the door frame stop edge slot 3, the consistency of the outer surfaces of the front and rear doors and sides is controlled, facilitating robot contouring and thus improving the painting quality. Simultaneously, the contact position between the magnetic buckle 5 and the inner panel of the four doors should be designed on a plane within the installation position of the four door panels to ensure painting quality and fixing strength. The disassembly steps are the reverse of the assembly process.

[0025] Depending on the vehicle model design, the positions of the process holes on the B-pillar and rear side panel differ from the positions of the door frame stop edges of the four doors. Therefore, the positioning fixtures for the front and rear doors may be interchangeable or incompatible. When they are incompatible, the distance between the process hole mounting plug and the door frame stop edge slot can be adjusted to suit either the front or rear door. Additionally, when the positioning fixture is incompatible, front and rear door installation error prevention markings 4 must be installed on the fixture body 7 for error prevention.

[0026] The magnetic clasp 5 is made of neodymium iron boron magnet to ensure strength. It measures 25mm in diameter and 20mm in thickness to ensure magnetic force. The magnetic clasp 5 is encased in a protective sleeve to prevent damage from impacts after repeated use. The entire positioning accessory is made of high-speed steel (W18Cr4V) to ensure strength.

[0027] The above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit the scope of implementation of this utility model. Any equivalent changes and modifications made within the protection scope of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A positioning fixture for painting four doors of an automobile, characterized in that, The positioning aid includes an aid body (7), an aid base (2), a process hole mounting plug (1), a door frame stop edge slot (3), and a magnetic buckle (5); the aid base (2) extends outward from one side of the aid body (7), and the process hole mounting plug (1) extends outward from the aid base (2); the door frame stop edge slot (3) is provided on the other side of the aid body (7), and the opening direction of the door frame stop edge slot (3) is in the same direction as the direction of the process hole mounting plug (1); a magnetic buckle (5) that can be attracted to the front door or the rear door is provided on the other side of the aid body (7) away from the door frame stop edge slot (3).

2. The positioning fixture for painting four doors of an automobile according to claim 1, characterized in that, When the four doors of the car are painted, the process hole installation plug (1) is inserted into the process hole inside the B-pillar and the rear side panel, the door frame stop edge slot (3) is engaged with the stop edge of the front door or the rear door frame, and the front door or the rear door is fastened. The magnetic buckle (5) is attracted to the inside of the front door or the rear door.

3. A positioning fixture for painting four doors of an automobile according to claim 1, characterized in that, The relative position and angle of the magnetic buckle (5) and the door frame stop edge groove (3) control the distance between the front door or the rear door and the front door or the rear door frame.

4. A positioning fixture for painting four doors of an automobile according to claim 3, characterized in that, The assistive device body (7) is equipped with front and rear door anti-misoperation signs (4).

5. A positioning fixture for painting four doors of an automobile according to claim 1, characterized in that, The magnetic clasp (5) is wrapped with a protective sleeve on the outside.

6. A positioning fixture for painting four doors of an automobile according to claim 1, characterized in that, The width of the auxiliary base (2) is greater than the width of the process hole mounting plug (1).

Images