Electrophoresis flow mark prevention device

Abstract

The utility model relates to the technical field of automobile coating, in particular to an electrophoresis flow mark prevention device which comprises a guide block, a supporting base, a flow guide plate and a limiting assembly, one side of the supporting base is connected with the guide block, the other side of the supporting base is connected with the flow guide plate, and the limiting assembly is arranged on the supporting base and used for fixing the overall position of the device. The device can be installed on a guide rail of an MPV body, residual electrophoresis liquid is guided into a carriage and prevented from dripping to the appearance surface of a C column, and the attractiveness and corrosion resistance of the MPV body are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile painting, and more particularly to an electrophoresis flow mark preventing device. Background Art

[0002] Electrophoretic flow marks have always been a stubborn quality problem plaguing automotive coating production, and are commonly found on vehicle door hinges, door lid press edges, door window frames, and other areas of the vehicle body. During the electrophoretic coating process, a small amount of electrophoretic fluid remains in the gaps between the body sheet metal or between parts due to the capillary siphoning effect of the liquid. During the drying process after electrophoresis, the surface tension of the residual liquid decreases as the temperature rises. When the surface tension of the accumulated liquid is insufficient to overcome its own gravity, the electrophoretic fluid flows from the gaps or gaps to the surface of the vehicle body, forming electrophoretic flow marks, which lead to paint defects and reduce the aesthetic appearance of the coating. Therefore, they must be eliminated during the production process. To prevent the appearance of the paint film from being affected, the areas where electrophoretic flow marks occur need to be polished and repaired. This not only increases the workload and production costs, but the damage to the electrophoretic paint film during the polishing process also affects the corrosion resistance of the polished area, bringing the risk of vehicle body rust. A common electrophoretic flow mark on MPV models is on the exterior surface of the C-pillar. This is because there is residual electrophoretic fluid in the welding gap between the side outer panel and the guide rail reinforcement plate on the sliding door. As the body gradually tilts backward during the climbing section, the accumulated fluid flows to the rear of the vehicle and eventually drips onto the exterior surface of the rear side C-pillar.

[0003] The existing solution to address electrophoretic flow marks in this area on MPV models is to increase the thickness of the spot weld adhesive applied to the inner side of the side panel. This fills the gap between the weld and the upper rail reinforcement plate, thereby reducing the incidence of electrophoretic fluid dripping onto the exterior surface and causing defects. However, this method relies on manual glue application, resulting in significant instability in the glue spacing and diameter. Furthermore, excessive application of the spot weld adhesive can easily lead to overflow, hindering the subsequent installation of door frame gaskets and even causing leaks. Excessive application of the spot weld adhesive can underfill the gap, resulting in continued electrophoretic fluid dripping and an inability to completely eliminate electrophoretic flow marks on the exterior surface. Utility Model Content

[0004] The purpose of the present invention is to overcome the deficiency of the prior art that the electrophoretic flow marks on the exterior surface of the C-pillar cannot be completely eliminated, and to provide an anti-electrophoretic flow mark device to guide the electrophoretic liquid into the interior of the vehicle compartment so that it no longer drips onto the side C-pillar, thereby eliminating the electrophoretic flow marks on the exterior surface and ensuring the aesthetics and anti-corrosion performance of the MPV body.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] Provided is an electrophoresis streak prevention device, comprising a guide block, a support base, and a guide plate. One side of the support base is connected to the guide block, and the other side is connected to the guide plate.

[0007] After the electrophoresis process is complete, the guide block on the support base engages with the MPV body rail, allowing the entire device to be moved to the rear end of the vehicle. When the vehicle is climbing a slope, residual electrophoretic fluid in the weld gap between the side panel and the upper guide rail reinforcement plate of the sliding door drips onto the guide plate under its own gravity, and then drains into the vehicle interior. The device has a simple overall structure, and the guide block is easy to install. It can divert residual electrophoretic fluid into the vehicle interior, preventing electrophoretic flow marks on the exterior surface of the side panel C-pillar, ensuring the aesthetic appearance of the vehicle body. It also replaces the manual process of filling the gap with spot welding glue, improving production efficiency.

[0008] Furthermore, the guide block is a square structure with grooves on its side. The square structure of the guide block is not easy to roll or shake in the vehicle body guide rail, and the fit effect is good. The grooves on the side of the guide block facilitate the installation of the guide block into the guide rail and reduce operation time.

[0009] Furthermore, the top corners of the guide blocks are rounded, which can prevent the guide blocks from damaging the galvanized layer of the upper guide rail and avoid corrosion without affecting the installation process of the operators.

[0010] Furthermore, the guide block is provided with a mounting hole, and the support base is provided with a connecting block, which passes through the mounting hole and is connected to the guide block. A mounting hole is reserved in the center of the guide block for easy positioning, and the connecting block passes through the mounting hole. The connection between the guide block and the support base is ensured to be stable and accurate by means of clamping, welding, etc.

[0011] Furthermore, the guide blocks are provided in at least two groups, and the guide blocks are parallel to each other. Multiple groups of parallel guide blocks provide multiple support points for the support base on the guide rail, so that the center of gravity of the entire device can be kept balanced and will not tilt.

[0012] Furthermore, the deflector plate has guide flanges on one set of opposite sides and one of the adjacent sides. The guide flanges on one set of opposite sides and one of the adjacent sides prevent residual electrophoretic fluid from overflowing and divert the residual electrophoretic fluid to the side without the guide flange, allowing it to drip into the vehicle interior without affecting the vehicle body appearance.

[0013] Furthermore, the guide plate includes a drainage slope connected to the guide flange on the side near the guide block, and the drainage slope is inclined toward the inside of the guide plate. The drainage slope is connected to the guide flange on the side near the guide block, and the inclined setting can better receive residual electrophoretic fluid dripping from the end of the guide rail, thereby improving the diversion effect.

[0014] Furthermore, the anti-electrophoretic streak device also includes a limiting assembly for limiting the relative position of the device and the vehicle body. The limiting assembly includes a limiting rod that is vertically connected to the support base. The limiting assembly controls the entire device to slide on the guide rail to a specified position. When the operator moves the device toward the end of the guide rail, when the limiting rod contacts the guide rail, it indicates that the device has moved into position, thus providing a positioning function.

[0015] Furthermore, the limiting assembly also includes a rocker arm positioning member and a rotating rocker arm. The rocker arm positioning member is fixedly connected to the limiting arm. The rotating rocker arm includes a connecting portion rotatably connected to the rocker arm positioning member, and limiting portions and rotating portions disposed at opposite ends of the connecting portion. The limiting portions are perpendicularly connected to the connecting portion. When the device moves to the end of the guide rail, an operator operates the rotating portion to rotate the connecting portion within the rocker arm positioning member. The limiting portions and the guide rail bracket form a limit, fixing the relative position of the device and the guide rail, and ensuring that the device position does not deviate significantly.

[0016] Furthermore, the swing arm positioning members are provided in multiple groups on the limiting rod, and the swing arm is provided with limiting blocks located between the swing arm positioning members. The limiting blocks are provided between the swing arm positioning members to limit the relative position between the rotating swing arm and the limiting rod, thereby preventing the rotating swing arm from falling out of the limiting rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The electrophoretic liquid is directed into the interior of the vehicle, preventing it from dripping onto the exterior surface of the side C-pillar, eliminating electrophoretic flow marks there. This not only ensures the aesthetics and corrosion resistance of the MPV body, but also improves production efficiency.

[0019] 2. The guide block is matched with the inner groove size of the MPV guide rail to achieve effective fixation and quick installation of the device, and the operation is simple;

[0020] 3. It can slide on the MPV guide rail, has good diversion effect, and is suitable for a variety of models. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the device to prevent electrophoresis streaking;

[0022] Figure 2 Schematic diagram of the structure of the guide block;

[0023] Figure 3 Schematic diagram of the structure of the support base;

[0024] Figure 4 Schematic diagram of the structure of the guide plate;

[0025] Figure 5 It is a structural diagram of the limit component;

[0026] Figure 6 is a structural diagram of a rotating pendulum;

[0027] In the accompanying drawings: 100, guide block; 110, groove; 120, mounting hole; 200, support base; 210, connecting block; 300, guide plate; 310, guide flange; 320, guide slope; 400, limit assembly; 410, limit rod; 420, rocker arm positioning member; 430, rotating rocker arm; 431, connecting part; 432, limit part; 433, rotating part; 434, limit block. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic, not actual, representations. They should not be construed as limiting this patent. To better illustrate the embodiments of the present invention, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0029] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and so on indicate the orientation or position relationship, they are based on the orientation or position relationship shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the terms describing the position relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0030] Example 1

[0031] This embodiment is the first embodiment of the device for preventing electrophoretic streaking. Figure 1As shown, the vehicle comprises a guide block 100, a support base 200, and a guide plate 300. The support base 200 is connected to the guide block 100 on one side and to the guide plate 300 on the other side. In the automotive coating production process, the electrophoresis process plays a key role in subsequent corrosion protection. However, due to issues with the vehicle body structure, welding hem glue, or the parameter settings of the pre-treatment electrophoresis process, a certain amount of a mixture of oil, electrophoresis fluid, and other liquids may remain in the hem or cavity gaps of the vehicle body due to surface tension. After electrophoresis, the liquid boils rapidly due to the rising temperature of the vehicle body, overflowing from the hem gaps, flowing to the end of the vehicle body during the climbing section, and dripping onto the exterior surface of the side C-pillar, forming electrophoresis flow marks that affect the vehicle body's aesthetics. To address the aforementioned issues, after the electrophoresis process is complete, the anti-electrophoretic flow mark device of this embodiment is installed on the MPV body. First, the guide block 100 is inserted into the guide rail through the notch in the guide rail. The guide block 100 is then moved to move the support base 200 and the deflector 300 to the end of the guide rail. During the drying process, the residual electrophoretic fluid in the weld gap between the side panel and the upper guide rail reinforcement plate of the sliding door boils. After its surface tension decreases to less than its own gravity, it converges to the end of the body and then gradually drips onto the deflector 300, where it is drained into the vehicle interior. The anti-electrophoretic flow mark device of this embodiment is fixed to the MPV body guide rail via the guide block 100. It is simple to assemble and easy to use. It controls the dripping position of the residual electrophoretic fluid in the gap, preventing it from dripping onto the exterior surface of the side C-pillar and affecting the body. This ensures the aesthetics and corrosion resistance of the MPV body while eliminating the need for polishing the electrophoretic flow marks, reducing workload and production costs.

[0032] like Figure 2 As shown, the guide block 100 is a square structure and a groove 110 is provided on the side. The guide block 100 is set to a square structure, which is more stable in the guide rail than a circular structure and is less likely to shake. Grooves 110 are provided on the side of the guide block 100, that is, the four end faces in contact with the guide rail, so that the guide block 100 can easily enter the inner groove of the guide rail, and can also ensure that the entire device does not shake significantly under the action of external force. The transition of the groove 110 can be rounded, and the rounding size is adjusted according to the size of the guide block 100 to make the transition smoother. This embodiment uses a guide block that matches the size of the inner groove of the MPV guide rail to achieve effective fixation and quick installation of the device. It is simple to operate and can slide on the guide rail, and is suitable for a variety of vehicle models.

[0033] The top corners of the guide block 100 are rounded. The four corners of the guide block 100 are also rounded, which can prevent the device from damaging the galvanized layer of the upper guide rail while not affecting the installation of the operator, thereby improving the anti-corrosion effect of the vehicle body.

[0034] like Figure 2 、 Figure 3As shown, the guide block 100 is provided with a mounting hole 120, and the support base 200 is provided with a connecting block 210, which passes through the mounting hole 120 and connects to the guide block 100. The support base 200 has a protruding connecting block 210, which can be snapped together with the guide block 100 through the mounting hole 120, or welded at the location of the mounting hole 120, providing a more stable fixation effect and device positioning accuracy. The support base 200 is designed based on the dimensions of other components in the device and the space available for the vehicle body guide rails, adhering to the principles of lightweight simplicity. While ensuring the effective splicing of related parts, it is also necessary to ensure that there is no interference with the vehicle body.

[0035] At least two sets of guide blocks 100 are provided, each parallel to the other. These two sets of guide blocks 100 are connected to the support base 200, providing multiple connection points between the support base 200 and the guide rails. The parallel arrangement of the guide blocks 100 maintains a stable center of gravity for the device, preventing significant tilt and ensuring smooth flow of the electrophoretic fluid into the vehicle compartment without spillage due to device movement. The spacing between the guide blocks 100 is controlled to be slightly less than the length of the guide rail notch to prevent the device from becoming stuck in the notch during installation and removal.

[0036] The working principle of the anti-electrophoresis streak device in this embodiment is as follows:

[0037] After the electrophoresis of the vehicle body is completed, first, multiple sets of square guide blocks 100 with rounded corners are inserted into the guide rails, and then the support base 200 and the guide plate 300 are moved along the guide rails to the end of the guide rails to keep the whole stable and balanced. The guide plate 300 receives the electrophoretic liquid dripping from the welding gap between the side outer panel and the guide rail reinforcement plate on the sliding door, and drains it into the interior of the car through the guide plate 300.

[0038] Example 2

[0039] This embodiment is the second embodiment of the device for preventing electrophoretic streaks. This embodiment is similar to the first embodiment, except that a pair of opposite sides and one of the adjacent sides of the guide plate 300 are provided with guide flanges 310. Figure 4 As shown, the guide plate can be set to a rectangle, and flange treatment is adopted at its two long sides and one of the short sides. The guide flange 310 is set to prevent the electrophoretic liquid from splashing. The short side where the guide flange 310 is not set is a reserved electrophoretic liquid discharge port. The electrophoretic liquid discharge port is controlled to be located above the interior of the car, so that the electrophoretic liquid dripping onto the guide plate 300 can drip from the electrophoretic liquid discharge port to the interior of the car, and will not affect the appearance of the car body.

[0040] The deflector 300 also includes a sloped diversion surface 320 connected to the deflector flange 310 on the side closest to the guide block 100. The sloped diversion surface 320 is tilted inwardly toward the deflector 300. The sloped diversion surface 320 and the deflector flange 310 have a certain inclination angle, which can be set within a range of 20° to 40°. The sloped diversion surface 320 should be located close to the guide block 100, that is, close to the electrophoretic fluid dripping point, and tilted inwardly toward the deflector 300. This increases the receiving area of ​​the deflector 300 and reduces the free fall distance of the electrophoretic fluid, preventing the electrophoretic fluid from splashing onto other parts of the vehicle body during dripping, which could affect the aesthetics.

[0041] The working principle of this embodiment is as follows: the guide flange 310 prevents the electrophoretic liquid in the guide plate 300 from overflowing outward, and it can only flow out along the electrophoretic liquid discharge outlet where the guide flange 310 is not provided, and drip into the interior of the car; the drainage slope 320 receives the dripping electrophoretic liquid, allowing it to slide along the drainage slope 320 to the inside of the guide plate 300, thereby preventing the electrophoretic liquid from splashing out.

[0042] Example 3

[0043] This embodiment is the third embodiment of the device for preventing electrophoretic streaking. This embodiment is similar to the first embodiment, except that it further includes a limiting assembly 400 for limiting the relative position between the device and the vehicle body. The limiting assembly 400 includes a limiting rod 410, which is vertically connected to the support base 200. Figure 5 As shown, after inserting the device into the guide rail through the notch, the operator moves the device along the guide rail to the end of the guide rail to receive the electrophoretic fluid dripping from the weld gap between the side panel outer panel and the upper guide rail reinforcement plate of the sliding door. When the limit rod 410 contacts the end of the guide rail, the entire device has been moved into place, and the limit rod 410 provides a good positioning effect for the electrophoretic flow device. The limit rod 410 is perpendicular to the support base 200, ensuring a stable contact between the limit rod 410 and the guide rail, and better positioning effect.

[0044] like Figure 6As shown, the limiting assembly 400 in this embodiment further includes a rocker arm positioning member 420 and a rotating rocker arm 430. The rocker arm positioning member 420 is fixedly connected to the limiting rod 410. The rotating rocker arm 430 includes a connecting portion 431 rotatably connected to the rocker arm positioning member 420, and a limiting portion 432 and a rotating portion 433 provided at both ends of the connecting portion 431. The limiting portion 432 is perpendicularly connected to the connecting portion 431. The rocker arm positioning member 420 can be fixedly connected to the limiting rod 410 by welding or other means. The rotating rocker arm 430 is originally a straight rod. After passing directly through the rocker arm positioning member 420, one end of the rotating rocker arm 430 is bent perpendicularly to the connecting portion 431, thereby forming the limiting portion 432. The other end is bent at a certain angle to the connecting portion 431, thereby forming the rotating portion 433. When the limiting rod 410 is in contact with the guide rail, the entire device is located at the end of the guide rail. The operator controls the rotation of the rotating part 433 connected to the rocker arm positioning member 420 by moving the rotating part 433 downward, thereby driving the limiting part 432 to move upward. The limiting part 432 cooperates with the limiting rod 410 and is respectively located at both ends of the guide rail to control the overall position of the anti-electrophoretic flow mark device, so that it will not deviate significantly along the guide rail during operation, thereby improving the effect of eliminating electrophoretic flow marks.

[0045] In this embodiment, there are multiple groups of rocker bar positioning members 420, and the rotating rocker bar 430 is provided with a limit block 434 located between the rocker bar positioning members 420. After the rotating rocker bar 430 is installed in the rocker bar positioning member 420, a limit block 434 can be added to the rotating rocker bar 430 at a position between the rocker bar positioning members 420. The limit block 434 is fixed to the rotating rocker bar 430 by welding or other means. The limit block 434 is stuck between the two groups of rocker bar positioning members 420 to prevent the rotating rocker bar 430 from separating from the rocker bar positioning member 420, limit the relative position of the rotating rocker bar 430 and the rocker bar positioning member 420, and provide axial positioning. At the same time, when the rotating rocker bar 430 rotates, the limit block 434 can abut against the limit rod 410 to provide axial positioning.

[0046] The working principle of this embodiment is as follows: when the anti-electrophoretic streak device is moved along the guide rail, the limit rod 410 abuts against the end of the guide rail, providing a limit for the entire device and fixing the relative position of the device and the guide rail; after moving to the end of the guide rail, the operator moves the rotating part downward to control the rotating part 433 to rotate in the rocker positioning member 420, driving the limit part 432 to move upward, and the limit part 432 and the limit rod 410 are respectively located on both sides of the guide rail, and the position of the control device will not be offset; the limit block 434 on the rocker is located between the rocker positioning member 420, and can abut against the limit rod 410, providing axial and circumferential positioning for the rotating rocker 430 in the rocker positioning member 420.

[0047] In the specific contents of the above-mentioned specific implementation methods, the various technical features can be combined in any non-contradictory manner. In order to make the description concise, not all possible combinations of the above-mentioned technical features are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. A person skilled in the art will be able to make other variations or modifications based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. An anti-electrophoretic flow mark device, characterized in that: It comprises a guide block (100), a support base (200), and a guide plate (300); one side of the support base (200) is connected to the guide block (100), and the other side is connected to the guide plate (300).

2. The device for preventing electrophoretic streaking according to claim 1, wherein: The guide block (100) is a square structure and has a groove (110) on its side.

3. The device for preventing electrophoretic streaking according to claim 2, wherein: The top corner of the guide block (100) is a rounded structure.

4. The device for preventing electrophoretic streaking according to claim 1, wherein: The guide block (100) is provided with a mounting hole (120), and the support base (200) is provided with a connecting block (210), and the connecting block (210) passes through the mounting hole (120) and is connected to the guide block (100).

5. The device for preventing electrophoretic streaking according to claim 1, wherein: The guide blocks (100) are provided in at least two groups, and the guide blocks (100) are parallel to each other.

6. The device for preventing electrophoretic streaking according to any one of claims 1 to 5, characterized in that: A set of opposite sides and one of the adjacent sides of the guide plate (300) are provided with guide flanges (310).

7. The device for preventing electrophoretic streaking according to claim 6, wherein: The guide plate (300) further comprises a drainage slope (320) connected to the guide flange (310) on the side close to the guide block (100), and the drainage slope (320) is inclined toward the inside of the guide plate (300).

8. The device for preventing electrophoretic streaking according to claim 1, wherein: The anti-electrophoresis streak device further comprises a limiting assembly (400) for limiting the relative position between the device and the vehicle body, wherein the limiting assembly (400) comprises a limiting rod (410), and the limiting rod (410) is vertically connected to the support base (200).

9. The device for preventing electrophoretic streaking according to claim 8, characterized in that: The limiting assembly (400) further comprises a rocker bar positioning member (420) and a rotating rocker bar (430), wherein the rocker bar positioning member (420) is fixedly connected to the limiting bar (410), and the rotating rocker bar (430) comprises a connecting portion (431) rotatably connected to the rocker bar positioning member (420), and a limiting portion (432) and a rotating portion (433) arranged at both ends of the connecting portion (431), wherein the limiting portion (432) is vertically connected to the connecting portion (431).

10. The device for preventing electrophoretic streaking according to claim 9, characterized in that: The rocker arm positioning members (420) are provided in multiple groups on the limiting rod (410), and the rotating rocker arm (430) is provided with limiting blocks (434) located between the rocker arm positioning members (420).

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