CN109985770B

CN109985770B - Gun nozzle for coating vehicle flange and method for gluing vehicle

Info

Publication number: CN109985770B
Application number: CN201810005673.4A
Authority: CN
Inventors: 周续
Original assignee: BMW Brilliance Automotive Ltd
Current assignee: BMW Brilliance Automotive Ltd
Priority date: 2018-01-03
Filing date: 2018-01-03
Publication date: 2021-04-16
Anticipated expiration: 2038-01-03
Also published as: CN109985770A; EP3508276A1; EP3508276B1

Abstract

The invention relates to a PVC coating method, which comprises a welding seam sealing step and a bottom plate sealing step, wherein the welding seam sealing step comprises the steps of coating PVC glue on a vehicle body (1); the bottom plate sealing step comprises coating PVC glue on the vehicle bottom, and is characterized in that the welding seam sealing step also comprises coating PVC glue on the side skirt plate (3) of the vehicle body (1), particularly the top surface and the bottom surface of the edge of the vehicle body. The invention also relates to a lance nozzle for a spray gun, in particular for the above-mentioned PVC coating process.

Description

Gun nozzle for coating vehicle flange and method for gluing vehicle

Technical Field

The invention relates to a gun nozzle for coating a vehicle flange.

Background

In the vehicle manufacturing industry, one important process in the vehicle painting process is sizing. The gluing process usually comprises a weld sealing step and an underbody protection step, whereby in particular a sealing and corrosion protection treatment of the vehicle can be achieved and thus, for example, wax can be prevented from flowing out of the weld during the subsequent cavity wax injection.

In order to improve the sealing property, sound insulation property, shock resistance, stone impact resistance and the like of vehicles, PVC coatings are widely used in the vehicle sizing process. PVC paint generally refers to polyvinyl chloride paint whose main component is polyvinyl chloride resin, and is made into high-solid paint having a solid content of more than 90% by adding pigments, plasticizers, fillers, etc. to the polyvinyl chloride resin and mixing them. PVC coatings can be divided into two categories: and (4) welding seam sealing glue and vehicle primer. The welding seam sealant has good flexibility, extensibility, hardness and abrasion resistance, and therefore can play a good role in sealing, sound insulation and water leakage prevention. The coating is mainly sprayed on the bottom of the vehicle and four wheel covers, has high strength, hardness and adhesive force, and can play the roles of shock resistance, stone impact resistance and vehicle body protection. The welding seam sealant is mainly coated on the welding seam of the car body through a glue gun. The vehicle bottom coating is mainly prepared by uniformly spraying PVC coating on the vehicle bottom and the wheel cover in a spraying manner.

However, for vehicles with vehicle flanges, when spraying PVC paint to the bottom of the vehicle, the vehicle flanges (especially the side skirt panels under the door) cannot be completely rubberized due to machine limitations and to prevent overspray, so that the outer edges of the vehicle flanges are not coated, i.e. a gap has to be left which is not rubberized. The gap is generally specified in the range of 10-15 mm. However, if the gap that is not glued is too large, for example because the accuracy of the machine is not high enough, the outer edge of the vehicle flange needs to be glued separately and manually. This slows down the cycle and is very uneconomical.

Disclosure of Invention

The invention aims to eliminate the defects in the prior art, and particularly aims to glue the outer edge of the flange of the vehicle without manually gluing the bottom of the vehicle.

In view of this, according to the present invention, there is provided a nozzle for coating the flange of a vehicle, in particular for PVC coating, comprising: the two spraying bodies are respectively provided with a nozzle; a connecting bridge, which is connected to a corresponding spray body at both ends; a connecting rod having a joint at one end and connected to the connecting bridge at the other end; wherein the two spray bodies, the connecting bridge and the connecting rod are connected to each other in a fluid-conducting manner; the connecting bridge has an opening which can accommodate a vehicle flange to be coated, and the spray openings of the two spray bodies can be oriented from opposite sides of the vehicle flange to be coated toward the vehicle flange, respectively, when the opening accommodates the vehicle flange to be coated.

The gun nozzle according to the invention is therefore able to apply paint simultaneously on the vehicle flange from opposite sides of the vehicle flange to be painted (in particular the top and bottom sides of the side skirt) by means of two cylindrical spray bodies. In this way, the opposite sides of the vehicle flange to be coated can be coated simultaneously in the weld seam sealing step, so that the floor area of the outer edge of the vehicle flange is already coated in the weld seam sealing step. Therefore, the outer edge of the vehicle flange does not need to be glued manually in the vehicle bottom protection step. This avoids slowing down the cycle time and reducing labor costs.

Preferably, the two nozzle bodies and the connecting bridge are designed as cylinders, which facilitates the simple production of the nozzle according to the invention.

Preferably, the spout is configured as a strip spout, whereby the PVC coating can be applied uniformly in the form of a flat sheet flow on both sides of the side skirt and thus the coating thickness is uniform. The flat sheet flow is easy to control, so that the coating area can be better covered. By adjusting the spray angle of the nozzle, the edge of the side skirt board can be completely coated with PVC coating without under-spraying or over-spraying. It is also preferred that the spouts are arranged symmetrically to each other about the vehicle flange to be painted when the opening accommodates the vehicle flange to be painted. Thereby enabling the PVC paint to be applied equally to both sides of the side skirt.

In this connection, it is also preferred that the spray direction of the spray opening is at an angle of not equal to 90 degrees to the vehicle flange to be coated when the opening accommodates the vehicle flange to be coated. This is also advantageous in that the coating material covers the coated area better.

Preferably, the connecting bridge has a U-shaped, preferably C-shaped, horseshoe-shaped or hairpin-bent cross section, the two legs of which are each connected to a cylindrical spray body. This facilitates better handling of the muzzle according to the present invention. In this connection, it is also preferred that the longitudinal axes of the legs are angled with respect to the longitudinal axis of the respective spray body. This also helps the operator to better manipulate the muzzle.

Preferably, the connecting rod has a bent portion or a curved portion. By means of the bend or bend, the operator can be ergonomically assisted in a more comfortable handling of the muzzle.

Preferably, the connecting rod is connected to the connecting bridge at a midpoint of the connecting bridge. Thereby facilitating better handling of the muzzle by the operator.

In this context, the vehicle flange can be, in particular, a side wing of the vehicle or a side skirt of the vehicle.

Furthermore, according to the invention, a method for applying glue to a vehicle during a coating process, wherein the vehicle has a vehicle flange, in particular a side wing or a side skirt of the vehicle, comprises the following steps: coating the rubber material on the automobile body; coating the vehicle flange, especially the outer edge of the vehicle flange, by using the gun nozzle; and applying the sizing to the vehicle bottom.

In this way, the opposite sides of the vehicle flange to be coated can be coated simultaneously in the seam sealing step, so that the floor area of the outer edge of the vehicle flange is already coated in the seam sealing step. Therefore, the outer edge of the vehicle flange does not need to be glued manually in the vehicle bottom protection step. This avoids slowing down the cycle time and reducing labor costs.

Preferably, the glue is applied to the vehicle body and/or the vehicle bottom by means of a robot, whereby an automated process for coating the vehicle is carried out to the greatest possible extent, so that slowing down the work cycle and reducing the labor expenditure can be avoided.

Drawings

The invention is explained in detail below with reference to the illustrated embodiments of the drawings. Wherein:

FIG. 1 shows a schematic front view of a vehicle with a side skirt during vehicle painting;

FIG. 2 shows a perspective view of a muzzle according to the present invention;

FIG. 3 shows a side view of the muzzle;

fig. 4 shows a cross-sectional view in the direction IV of fig. 3.

Detailed Description

Fig. 1 shows a schematic front view of a vehicle with a side apron during the painting of the vehicle. The vehicle 1 comprises a side skirt 2 on each side. The side skirt 2 belongs to the vehicle flange. In this context, the term "vehicle flange" refers to a flange that projects outwardly from the vehicle on the outer periphery of the vehicle.

For coating the lateral skirt 2, fig. 2 to 4 show a preferred embodiment of the gun nozzle according to the invention. As can be seen first from fig. 2, the nozzle comprises two spray bodies 100, a connecting bridge 200 for connecting the two spray bodies and a connecting rod 300 for connecting the nozzle to the lance head (not shown) of the lance. For coating, the spray body 100, the connecting bridge 200 and the connecting rod 300 can be connected to one another in a fluid-conducting manner. For example, the spray body 100, the connection bridge 200, and the connection rod 300 can be configured to be hollow or include a channel to guide a fluid.

As shown in fig. 3, the jet body 100 is preferably configured as a cylindrical body. In the present embodiment, the nozzle body 100 is configured as a cylindrical body, for example, made of a circular tube. Of course, the spray body can also be designed as a polygonal prism. Two cylindrical spray bodies 100 may be arranged parallel to each other. Accordingly, the two cylindrical nozzle bodies 100 may be symmetrically disposed about a mid-plane 101 between the two cylindrical nozzle bodies 100, wherein the mid-plane 101 refers to a normal plane to a plane in which the two cylindrical nozzle bodies 100 are located and the normal plane passes through center lines of the two cylindrical nozzle bodies. The side skirt 2 to be coated can be positioned on the mid-plane 101 between the two cylindrical spray bodies 100.

The two spray bodies 100 are respectively provided with at least one spray opening. When coating the vehicle 1, the side skirt 2 to be coated can be coated from opposite sides thereof by the nozzle ports of the two spray bodies 100. When the jet body 100 is configured as a cylindrical jet body, it is preferable that the nozzle openings are provided on the outer circumferential surface of the cylindrical jet body, and the nozzle openings of the two cylindrical jet bodies 100 are provided so as to be oriented toward the midplane 101 between the two cylindrical jet bodies 100. This allows the side skirt 2 to be coated simultaneously from opposite sides of the side skirt 2 to be coated.

The nozzle can be designed as a strip nozzle, whereby the coating material, in particular PVC coating material, can be sprayed in the form of a flat stream, so that a uniform application of the coating material is facilitated. In coating the vehicle 1, the spray openings are preferably arranged symmetrically to one another with respect to the side panel 2 to be coated, whereby the coating material can be applied equally to both sides of the side panel. When the spray body 100 is configured as a cylindrical spray body, the spout may be configured as a strip-shaped spout extending in the axial direction of the corresponding cylindrical spray body 100. Also, the nozzles may be symmetrically disposed with each other about a mid-plane 101 between the two cylindrical nozzle bodies 100. In this connection, advantageously, each strip-shaped spout can be arranged centrally on the respective cylindrical spout body 100.

As shown in fig. 3, the direction of the spray opening is preferably at an angle of not equal to 90 degrees to the side panel to be coated when coating the vehicle 1. In other words, the direction of the spray openings is not perpendicular to the mid-plane 101 between the two cylindrical spray bodies 100 when the vehicle 1 is being painted.

In addition, when the spray bodies 100 are configured as cylindrical spray bodies, as shown in fig. 4, caps 110 may be provided at both ends of each cylindrical spray body 100, thereby facilitating the cleaning of the cylindrical spray bodies 100.

The connecting bridge 200 has an opening capable of accommodating the side skirt to be coated, and when the opening accommodates the side skirt 2 to be coated, the spout ports of the two spray bodies 100 can be oriented toward the side skirt 2 from the opposite sides (i.e., the top and bottom surfaces) of the side skirt 2 to be coated, respectively. The side skirt 2 can thus be simply positioned in the opening of the side skirt, thus facilitating better handling of the muzzle according to the invention by the operator.

In the present embodiment, the connecting bridge 200 is also configured as a cylindrical body. The bridge 200 may have a U-shape, but preferably has a C-shaped, horseshoe-shaped or hairpin-bent cross-section. For example, the connecting bridge may be bent into a substantially U-shape by a circular tube member. In this case, the connecting bridge 200 may have two

legs

210, 220 and a connecting section connecting the two legs.

An interface is provided at the middle of the connection section of the connection bridge 200 for connection with the connection rod 300. For example, the connection bridge 200 may be screwed or welded with the connection rod 300.

The two

legs

210, 220 of the bridge 200 are each connected, preferably welded, to a respective one of the spray bodies 100. In the present embodiment, the two

legs

210 and 220 of the bridge 200 are connected to one cylindrical spray body 100, respectively, and particularly to the cylindrical spray body 100 at the middle portion of the corresponding cylindrical spray body 100, so that the user can easily manipulate the nozzle. Preferably, as shown in fig. 4, the longitudinal axis 202 of the two

legs

210, 220 of the connecting bridge is at an angle a to the longitudinal axis 102 of the two cylindrical jet 100, so that the connecting bridge 200 does not interfere with the side skirt when the cylindrical jet moves along the side skirt.

The connection rod 300 has a joint 310 at one end and is connected to the connection bridge 220 at the other end. The fitting 310 may be connected to the lance tip (e.g. a hose thereof). The coupling may be a threaded coupling or a snap-fit coupling. The connecting rod 300 may serve as an operating handle. The connecting rod 300 may also have a first section connected to the joint 310 and a second section connected to the connecting bridge 220, which are bent at an angle to each other, preferably at an angle of about 120 degrees, which facilitates an ergonomically more comfortable handling of the muzzle by the operator.

According to the prior art, in the underbody protection step, the vehicle flanges (in particular the side panels under the doors) cannot be completely rubberized, due to the limitations of the machine and in order to prevent overspray, so that the outer edges of the vehicle flanges are not coated and therefore have to leave gaps without being rubberized. The outer edges of the vehicle flanges have to be glued manually separately in the underbody protection step.

Now, with the gun nozzle according to the present invention, since it has two spray bodies and the nozzle ports of the respective spray bodies can simultaneously coat the flange of the vehicle from both sides thereof, PVC paint can be simultaneously applied to both sides of the flange of the vehicle (i.e., the top and bottom surfaces of the side skirt in this embodiment). Therefore, the PVC paint can be applied to the underside of the vehicle flange at the same time in the weld sealing step. Therefore, the bottom surface of the vehicle flange does not need to be coated during the process of coating the vehicle bottom, so that the phenomenon of underspray or overspray does not occur. This avoids slowing down the cycle time and reducing labor costs.

The invention therefore also provides a method for sizing a vehicle during a coating process, wherein the vehicle has a vehicle flange, in particular a side wing or a side skirt of the vehicle, comprising the steps of: coating the rubber material on the automobile body; coating the vehicle flange, especially the outer edge of the vehicle flange, by using the gun nozzle; and applying the sizing to the vehicle bottom. In this way, the opposite sides of the vehicle flange to be coated can be coated simultaneously in the weld seam sealing step, so that the floor area of the outer edge of the vehicle flange is already coated in the weld seam sealing step. Therefore, the outer edge of the vehicle flange does not need to be glued manually in the vehicle bottom protection step. This avoids slowing down the cycle time and reducing labor costs.

According to the method provided by the invention, the glue can be coated on the car body and/or the car bottom by using the robot, so that the automatic process of car coating is realized to the greatest extent, the work beat is prevented from being slowed down, and the labor consumption is reduced.

Although the invention has been described by way of example and with reference to specific embodiments, it is to be understood that modifications and/or improvements may be made without departing from the scope of the appended claims. Where integers or devices referred to in the above description have known equivalents, such equivalents are also incorporated herein.

Claims

1. A gun nozzle for coating a vehicle flange, comprising:

two spray bodies (100) which are respectively provided with a spray opening;

a connecting bridge (200) which is connected at both ends to a respective spray body;

a connecting rod (300) provided with a joint (310) at one end and connected with the connecting bridge (200) at the other end;

wherein the two spray bodies (100), the connecting bridge (200) and the connecting rod (300) are connected to each other in a fluid-conducting manner;

the connecting bridge (200) has an opening which can accommodate a vehicle flange to be coated, and when the opening accommodates a vehicle flange to be coated, the spray openings of the two spray bodies (100) can be oriented from two opposite sides of the vehicle flange to be coated respectively towards the vehicle flange;

the two jet bodies (100) and the connecting bridge (200) are configured as cylindrical bodies; the connecting bridge (200) has a U-shaped form, the two legs (210, 220) of which are each connected to a respective one of the spray bodies (100); the longitudinal axis (202) of the legs (210, 220) is at an angle (a) to the longitudinal axis (102) of the respective spray body (100); and the two cylindrical spray bodies (100) are arranged parallel to each other.

2. The nozzle as claimed in claim 1, characterized in that the nozzles are configured as strip nozzles and that the nozzles are arranged symmetrically to one another with respect to the vehicle flange to be coated, when the opening accommodates the vehicle flange to be coated.

3. A nozzle according to claim 1 or 2, characterised in that the direction of spray of the nozzle opening when the opening receives a vehicle flange to be coated is at an angle unequal to 90 degrees to the vehicle flange to be coated.

4. Muzzle according to claim 1 or 2, wherein the bridge (200) has a C-shape, horseshoe shape or hairpin curve shape.

5. Muzzle according to claim 1 or 2, wherein the connecting rod (300) has a bend or bend.

6. Muzzle according to claim 1 or 2, wherein the connecting rod is connected to the connecting bridge (200) at its midpoint.

7. A muzzle according to claim 1 or 2, wherein the vehicle flange is a side wing or a side skirt of the vehicle.

8. Muzzle according to claim 1 or 2, characterized in that the two spray bodies (100) and/or the connecting bridge (200) and/or the connecting rod (300) are hollow or comprise channels capable of conducting a fluid.

9. A nozzle according to claim 1 or 2, characterized in that the nozzle is a nozzle for PVC coating.

10. A method of sizing a vehicle during a painting process, wherein the vehicle has a vehicle flange, the method comprising the steps of:

coating the rubber material on the automobile body;

coating the vehicle flange with a gun nozzle according to one of claims 1 to 9; and

the sizing is coated on the vehicle bottom.

11. Method according to claim 10, characterized in that the glue is applied to the body and/or the floor of the vehicle by means of a robot.

12. The method of claim 10 or 11, wherein the vehicle flange is a side wing of the vehicle or a side skirt of the vehicle.

13. A method according to claim 10 or 11, characterized in that the outer edges of the vehicle flanges are coated with a nozzle according to one of claims 1 to 9.