CN118719393A - Automobile door painting equipment and process - Google Patents

Abstract

The present invention discloses a kind of automobile door painting equipment and process, and relates to the field of painting technology. The equipment comprises: a first displacement driving component, which has a first driving end that moves back and forth, and a base is fixed on the first driving end; a stabilizing member, which is connected to the base; a first mechanical arm, which is connected to one end of the stabilizing member away from the base; a main nozzle, which is arranged at the end execution part of the first mechanical arm, and the input end of the main nozzle is connected to an external feeding pipe, and the output end of the main nozzle is connected to an auxiliary nozzle; a guide plate, which at least comprises a plate body, and the inner wall of the plate body is evenly provided with inclined guide blocks; the plate body is sleeved on the auxiliary nozzle; the paint flows through the output end of the main nozzle and is guided to the inner wall of the plate body by the auxiliary nozzle; the guide plate can rotate in forward and reverse directions, so as to control the flow speed and spraying speed of the paint, and is suitable for various paints with different fluidity and other characteristics.

Description

Automobile door painting equipment and process

Technical Field

The present invention relates to the field of automobile painting, and in particular to automobile door painting equipment and technology.

Background Art

With the continuous improvement of vehicle manufacturing technology, the painting process, as a key step, has been highly dependent on the efficient operation of intelligent robots. Especially for the painting of car doors, this process is complex and delicate. However, the current robot system used for door painting often needs to replace the robot or adjust the nozzle to adapt to the significant differences in paint properties. This undoubtedly interrupts the smoothness of the production line and reduces the overall manufacturing efficiency. After the spraying is completed, the defects need to be manually re-sprayed, which adds additional labor costs and time consumption. In addition, if the robot is not accurately controlled during the mobile spraying operation, the center of gravity is prone to shift, which affects the accuracy and stability of the spraying, resulting in slight unevenness or protrusions on the surface of the door, which damages the appearance quality and overall aesthetics of the final product.

Therefore, a kind of automobile door painting equipment and process are needed to solve the above-mentioned technical problems.

Summary of the invention

To achieve the above object, the present invention provides the following technical solution: a car door painting equipment, comprising:

A first displacement drive assembly having a first drive end that reciprocates, wherein a base is fixed to the first drive end;

A weight stabilizing member connected to the base;

A first mechanical arm connected to an end of the stabilizing member away from the base;

A main nozzle, which is arranged at the end effector of the first robot arm, and the input end of the main nozzle is connected to the external feed pipe, and the output end of the main nozzle is connected to the auxiliary nozzle;

A guide plate, which at least comprises a plate body, the inner wall of which is evenly provided with inclined guide blocks;

Wherein, the disc body is sleeved on the auxiliary nozzle;

Wherein, after the coating flows through the output end of the main nozzle, it is guided to the inner wall of the disc by the auxiliary nozzle.

Further, as a preference, the main nozzle comprises: an outer cylinder, an inner cylinder is arranged inside the outer cylinder, and a main material channel is formed inside the inner cylinder;

The auxiliary nozzle comprises:

A cylinder seat, which is in communication with the inner cylinder, and has a secondary material channel formed by a vertical section and a branch material channel formed by a horizontal section inside the cylinder seat;

The concave plate is fixedly connected to the bottom of the cartridge seat, and the outer periphery of the concave plate protrudes toward the guide plate.

Furthermore, as a preference, the guide plate further comprises: a rotating ring, which is rotatably arranged outside the cylinder seat, and a plurality of return springs are connected between the rotating ring and the plate body.

Further, preferably, two air cavities are formed between the outer tube and the inner tube, namely a first air cavity and a second air cavity;

The outer part of the outer cylinder is sleeved with a compression disk, and the compression disk includes: two chamber structures consisting of a bottom plate and a cone plate, which are a first chamber structure and a second chamber structure, respectively. The two chamber structures are sleeved on the outside of the outer cylinder, and the first chamber structure is connected to the first air cavity, and the second chamber structure is connected to the second air cavity;

The chassis is provided with a first air hole corresponding to the first chamber structure and a second air hole corresponding to the second chamber structure, and the first air hole and the second air hole have different directions so as to drive the guide plate to rotate in different directions.

Further, as a preference, column seats with sizes increasing from small to large are arranged in sequence along the conical surface from the small end to the large end on one side of the chassis facing the chamber structure, and a conical spring is arranged between two adjacent column seats, and the cross-sectional diameter of the conical spring corresponds to the size of the column seat.

Further, as a preference, the stabilizing member comprises:

A fixing seat connected to the base, wherein a column groove and a clamping groove extending outward from the column groove are formed in the middle of the fixing seat, and a lower ring groove is formed on the top of the fixing seat;

A support seat, whose cross section is T-shaped, the bottom of the support seat extends into the column groove, and an upper ring groove corresponding to the lower ring groove is formed on the support seat;

The elastic member is configured as a plurality of elastic members, and the plurality of elastic members are circumferentially distributed between the upper annular groove and the lower annular groove;

A fixing ring, the outer wall of which is connected to the inner wall of the slot;

A stabilizing ring has a stabilizing ball disposed between its inner wall and the support seat, and a plurality of buffer members distributed in a circumference are connected between the outer wall of the stabilizing ring and the inner wall of the fixing ring.

Further, as a preferred embodiment, the stabilizing ring comprises: a stabilizing seat, one end of which is provided with a concave spherical surface and matches with the stabilizing ball, and the other end is connected to the buffer;

The two sides of the stabilizing seat are connected with balancing blocks, and the side of the balancing block away from the stabilizing seat is connected with a buffer block.

Furthermore, preferably, the buffer member is composed of a conical spring and a telescopic column, and two adjacent groups of the buffer members are arranged in opposite directions.

A coating process for automobile doors comprises the following steps:

S1: The vehicle manufacturing line pre-cleans the vehicle;

S2: Phosphate the car to produce a phosphate film on its surface;

S3: Performing electrophoretic treatment on the automobile to produce an electrophoretic paint film on its surface;

S4: The first displacement drive assembly drives the first mechanical arm to perform mobile spraying, and the paint supplied by the external feed pipe passes through the main spray head and then flows through the auxiliary spray head, and finally sprays out through the guide plate to achieve the painting process of the car;

When processing a coating with low fluidity, the rotation direction of the guide plate is the same as the tilt direction of the guide block; when processing a coating with high fluidity, the rotation direction of the guide plate is opposite to the tilt direction of the guide block;

S5: After the painting is completed, the car will be sent to the baking room for baking operation.

Compared with the prior art, the present invention provides a car door painting equipment and process, which has the following beneficial effects:

In the present invention, the guide plate can rotate in forward and reverse directions with the help of an external air pressure device, thereby controlling the rotation direction of the guide plate to be the same as or opposite to the tilt direction of the guide block, further controlling the flow speed and spraying speed of the coating, being suitable for coatings with different fluidity and other characteristics, avoiding frequent replacement of robots or nozzles, and improving production efficiency;

In the present invention, with the help of external air pressure equipment, a large-scale uniform scattering spraying can be realized, followed by a small-scale uniform gathering spraying, so as to perform a supplementary spraying treatment on the defective area;

In the present invention, the provided stabilizing member can ensure the overall stability of the first mechanical arm when the first mechanical arm performs multi-posture adjustment.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic structural diagram of a vehicle door painting equipment;

FIG2 is a schematic diagram of the structure of a stabilizing component in a vehicle door painting device;

FIG3 is a cross-sectional view of a weight-stabilizing component in a vehicle door painting device;

FIG4 is a schematic diagram of the structure of a spray head in a car door painting device;

FIG5 is a schematic diagram of the structure of a guide plate in a car door painting device;

In the figure: 1, second displacement drive assembly; 2, second mechanical arm; 3, first displacement drive assembly; 4, base; 5, stabilizing member; 51, fixed seat; 52, support seat; 53, elastic member; 54, fixed ring; 55, stabilizing ring; 551, stabilizing seat; 552, balance block; 553, buffer block; 56, buffer member; 57, stabilizing ball; 58, column slot; 59, slot; 6, first mechanical Arm; 7, main nozzle; 71, outer cylinder; 72, inner cylinder; 73, main material channel; 74, first air cavity; 75, second air cavity; 8, auxiliary nozzle; 81, cylinder seat; 82, concave disk; 83, auxiliary material channel; 84, branch material channel; 9, compression disk; 91, bottom plate; 92, column seat; 93, taper spring; 94, cone disk; 10, guide disk; 101, disk body; 102, guide block; 103, swivel.

DETAILED DESCRIPTION

Please refer to Figures 1 to 5. The present invention provides a vehicle door painting device, comprising:

A first displacement driving component 3, which has a first driving end that reciprocates, and a base 4 is fixed to the first driving end;

A weight stabilizing member 5 connected to the base 4;

A first mechanical arm 6 connected to an end of the stabilizing member 5 away from the base 4;

A main nozzle 7 is arranged at the end execution part of the second robot arm 6, and the input end of the main nozzle 7 is connected to the external feed pipe, and the output end of the main nozzle 7 is connected to the auxiliary nozzle 8;

The guide plate 10 at least comprises a plate body 101, and the inner wall of the plate body 101 is evenly provided with inclined guide blocks 102;

The disc 101 is sleeved on the auxiliary nozzle 8. The disc 101 is sleeved on the auxiliary nozzle 8 in the following sense: the disc 101 can rotate around the auxiliary nozzle 8 and can slide along the axial direction of the auxiliary nozzle 8.

The paint flows through the output end of the main nozzle 7 and is guided to the inner wall of the disk 101 by the auxiliary nozzle 8 .

Furthermore, the painting equipment also includes a second displacement drive component 1, which has a second drive end that moves back and forth, and a second robotic arm 2 is fixed on the second drive end. The second robotic arm 2 is used to assist the first robotic arm 6 in performing preparations before spraying the vehicle door, for example, opening the vehicle door that is transmitted to the spraying station.

The first displacement drive assembly 3 drives the first mechanical arm 6 to perform mobile spraying, and the paint supplied by the external feed pipe flows through the main nozzle 7, then flows through the auxiliary nozzle 8, and finally is sprayed out through the guide plate 10 to achieve the painting process of the car.

When processing paint with low fluidity, the rotation direction of the guide plate 10 is the same as the tilt direction of the guide block 102, and the flow speed of the paint on the inner conical surface of the guide plate 10 and its spraying speed will increase, so that the atomization effect of the paint is enhanced, which is suitable for paint types with low fluidity;

When processing paint with high fluidity, the rotation direction of the guide plate 10 is opposite to the inclination direction of the guide block 102. The flow speed of the paint on the inner conical surface of the guide plate 10 and its spraying speed will be reduced, so that the atomization effect of the paint is slightly weakened, which is suitable for paint types with higher fluidity.

Among them, the second displacement driving assembly 1 and the first displacement driving assembly 3 can both be a screw nut pair structure and a transmission belt mechanism, which will not be described in detail here.

In this embodiment, the main nozzle 7 comprises: an outer cylinder 71, an inner cylinder 72 is arranged inside the outer cylinder 71, and a main material channel 73 is formed inside the inner cylinder 72;

The auxiliary nozzle 8 comprises:

A cylinder seat 81, which is in communication with the inner cylinder 72, and has an auxiliary material channel 83 formed by a vertical section and a branch material channel 84 formed by a horizontal section;

The concave plate 82 is fixedly connected to the bottom of the cartridge seat 81 , and the outer periphery of the concave plate 82 protrudes toward the guide plate 10 , thereby forming a guide portion.

Among them, the paint flows through the main material channel 73 and then enters the auxiliary material channel 83, and finally flows to the branch material channel 84, and is sprayed horizontally along the branch material channel 84, and then changes direction along the guide portion of the concave plate 82 and is sprayed in the direction of the guide plate 10. As the guide plate 10 rotates, the paint continues to move along the inner conical surface of the guide plate 10, and is finally sprayed out in a divergent and uniform manner.

In this embodiment, the guide plate 10 further includes a rotating ring 103 , which is rotatably disposed outside the cylinder seat 81 , and a plurality of return springs are connected between the rotating ring 103 and the plate body 101 .

In this embodiment, two air cavities are formed between the outer cylinder 71 and the inner cylinder 72, namely a first air cavity 74 and a second air cavity 75;

The outer part of the outer cylinder 71 is sleeved with a compression plate 9, and the compression plate 9 includes two chamber structures consisting of a bottom plate 91 and a cone plate 94, which are a first chamber structure and a second chamber structure. Both chamber structures are sleeved on the outer part of the outer cylinder 71, and the first chamber structure is connected to the first air cavity 74, and the second chamber structure is connected to the second air cavity 75.

The chassis 91 is provided with a first air hole corresponding to the first chamber structure and a second air hole corresponding to the second chamber structure. The first air hole and the second air hole have different directions so as to drive the guide plate 10 to rotate in different directions.

Among them, the first air cavity 74 and the second air cavity 75 are respectively connected to external air pressure equipment, and the external air pressure equipment can supply air to the first air cavity 74 and the second air cavity 75, thereby changing the air pressure in the first chamber structure and the second chamber structure, so that the first air hole or the second air hole sprays air. For example, when the first air hole sprays air, the gas can drive the guide plate 10 to rotate, and when the second air hole sprays air, the gas can drive the guide plate 10 to rotate in the opposite direction.

That is to say, when processing paint with low fluidity, the rotation direction of the guide plate 10 is the same as the tilt direction of the guide block 102, and the flow speed of the paint on the inner conical surface of the guide plate 10 and its spraying speed will increase, so that the atomization effect of the paint is enhanced, which is suitable for paint types with low fluidity;

When processing paint with high fluidity, the rotation direction of the guide plate 10 is opposite to the inclination direction of the guide block 102. The flow speed of the paint on the inner conical surface of the guide plate 10 and its spraying speed will be reduced, so that the atomization effect of the paint is slightly weakened, which is suitable for paint types with higher fluidity.

Of course, when the air pressure of the first air hole jet is high, the guide plate 10 will also slide along the axial direction of the auxiliary nozzle 8 and away from the compression plate 9. Similarly, when the air pressure of the second air hole jet is high, the guide plate 10 will also slide along the axial direction of the auxiliary nozzle 8 and away from the compression plate 9, thereby limiting the paint to be evenly gathered and sprayed in a small range, and realizing supplementary spraying of the missing material area.

In the initial state, under the action of the return spring, the guide plate 10 is close to the compression plate 9, so that the paint can be restricted to be sprayed evenly and scattered in a large range.

In this embodiment, the side of the chassis 91 facing the chamber structure is provided with column seats 92 with sizes increasing from small to large along its conical surface from the small end to the large end, and a conical spring 93 is provided between two adjacent column seats 92, and the cross-sectional diameter of the conical spring 93 corresponds to the size of the column seat 92.

The different cross-sectional diameters of the tapered spring 93 are provided to better balance the air pressure changes in the first chamber structure and the second chamber structure.

In this embodiment, the stabilizing member 5 includes:

A fixing seat 51 connected to the base 4, a column groove 58 and a clamping groove 59 extending outward from the column groove 58 are formed in the middle of the fixing seat 51, and a lower ring groove is formed at the top of the fixing seat 51;

The support seat 52 has a T-shaped cross section, the bottom of the support seat 52 extends into the column groove 58, and an upper ring groove corresponding to the lower ring groove is formed on the support seat 52;

The elastic member 53 is configured as a plurality of elastic members 53, and the plurality of elastic members 53 are circumferentially distributed between the upper annular groove and the lower annular groove;

A fixing ring 54, the outer wall of which is connected to the inner wall of the slot 59;

A stabilizing ball 57 is disposed between the inner wall of the stabilizing ring 55 and the support seat 52 , and a plurality of buffer members 56 distributed in a circumference are connected between the outer wall of the stabilizing ring 55 and the inner wall of the fixing ring 54 .

Among them, when the first robotic arm 6 is spraying, the base 4 drives the stabilizing part 5 and the first robotic arm 6 to move left and right. At the same time, the first robotic arm 6 will also change its posture in various ways, so as to complete multi-directional spraying. During this process, the center of gravity position of the first robotic arm 6 will change, and the elastic part 53 will rebound and pull the support seat 52 in the direction of the center of gravity offset, so as to stabilize the center of gravity of the first robotic arm 6 and improve the spraying stability.

In this embodiment, the stabilizing ring 55 includes a stabilizing seat 551, one end of which is provided with a concave spherical surface and matches with the stabilizing ball 57, and the other end is connected to the buffer member 56;

The two sides of the stabilizing seat 551 are connected with balancing blocks 552 , and the side of the balancing block 552 away from the stabilizing seat 551 is connected with a buffer block 553 .

In this embodiment, the buffer member 56 is composed of a conical spring and a telescopic column, and two adjacent groups of the buffer members 56 are arranged in opposite directions.

In this embodiment, the stabilizing ring 55 can buffer the support seat 52. Specifically, when the elastic member 53 rebounds and pulls the second robotic arm 6, the support seat 52 will float slightly in the gap between it and the fixed seat 51. The buffer member 56 buffers and supports the support seat 52 through the cooperation of the stabilizing seat 551 and the stabilizing ball 57. The buffer block 553 limits the position to ensure that the bending limit of the stabilizing ring 55 does not exceed the upper limit range, thereby helping to improve the stability of spraying.

In this embodiment, a car door painting process is also provided, comprising the following steps:

S1: The vehicle manufacturing line pre-cleans the vehicle;

S2: Phosphate the car to produce a phosphate film on its surface;

S3: Performing electrophoretic treatment on the automobile to produce an electrophoretic paint film on its surface;

S4: The first displacement drive assembly 3 drives the first mechanical arm 6 to perform mobile spraying, and the paint supplied by the external feed pipe passes through the main spray head 7 and then flows through the auxiliary spray head 8, and finally sprays out through the guide plate 10, thereby achieving the painting process of the car;

When processing a coating with low fluidity, the rotation direction of the guide plate 10 is the same as the tilt direction of the guide block 102; when processing a coating with high fluidity, the rotation direction of the guide plate 10 is opposite to the tilt direction of the guide block 102;

S5: After the painting is completed, the car will be sent to the baking room for baking operation.

That is to say, when processing paint with low fluidity, the rotation direction of the guide plate 10 is the same as the tilt direction of the guide block 102, and the flow speed of the paint on the inner conical surface of the guide plate 10 and its spraying speed will increase, so that the atomization effect of the paint is enhanced, which is suitable for paint types with low fluidity;

When processing paint with high fluidity, the rotation direction of the guide plate 10 is opposite to the inclination direction of the guide block 102. The flow speed of the paint on the inner conical surface of the guide plate 10 and its spraying speed will be reduced, so that the atomization effect of the paint is slightly weakened, which is suitable for paint types with higher fluidity.

What has been described above are only preferred specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention.

Claims (9)

1. An automobile door coating device, characterized in that: comprising the following steps:

a first displacement driving assembly (3) which is provided with a first driving end which moves reciprocally, wherein a base (4) is fixed on the first driving end;

A weight-stabilizing member (5) connected to the base (4);

A first mechanical arm (6) connected to an end of the weight-stabilizing member (5) remote from the base (4);

The main spray head (7) is arranged at the tail end executing part of the first mechanical arm (6), the input end of the main spray head (7) is communicated with an external feed pipe, and the output end of the main spray head (7) is communicated with the auxiliary spray head (8);

the air deflector (10) at least comprises a disc body (101), wherein inclined air deflector blocks (102) are uniformly distributed on the inner wall of the disc body (101);

wherein the disc body (101) is sleeved on the auxiliary spray head (8);

the paint flows through the output end of the main spray head (7) and is guided to the inner wall of the tray body (101) by the auxiliary spray head (8).

2. An automotive door painting apparatus according to claim 1, characterized in that: the main spray head (7) comprises an outer cylinder (71), an inner cylinder (72) is arranged in the outer cylinder, and a main material channel (73) is formed in the inner cylinder (72);

The sub-head (8) comprises:

a cylinder seat (81) which is communicated with the inner cylinder (72), wherein a secondary material channel (83) formed by a vertical section and a branch material channel (84) formed by a horizontal section are arranged in the cylinder seat (81);

The concave disc (82) is fixedly connected to the bottom of the cylinder seat (81), and the periphery of the concave disc (82) protrudes towards the direction of the flow guiding disc (10).

3. An automotive door painting apparatus according to claim 2, characterized in that: the guide disc (10) further comprises a swivel (103) which is rotatably arranged outside the cylinder seat (81), and a plurality of return springs are connected between the swivel (103) and the disc body (101).

4. A vehicle door painting apparatus according to claim 3, characterized in that: two air cavities, namely a first air cavity (74) and a second air cavity (75), are formed between the outer cylinder (71) and the inner cylinder (72);

The outer part of the outer cylinder (71) is sleeved with a compression disc (9), the compression disc (9) comprises two cavity structures consisting of a chassis (91) and a conical disc (94), namely a first cavity structure and a second cavity structure, the two cavity structures are sleeved outside the outer cylinder (71), the first cavity structure is communicated with the first air cavity (74), and the second cavity structure is communicated with the second air cavity (75);

The chassis (91) is provided with a first air hole corresponding to the first cavity structure and a second air hole corresponding to the second cavity structure, and the directions of the first air hole and the second air hole are different so as to drive the flow guide disc (10) to rotate in different directions.

5. An automotive door painting apparatus according to claim 4, characterized in that: the chassis (91) is towards one side of the cavity structure, column bases (92) with small-to-large sizes are sequentially arranged along the direction from the small end to the large end of the conical surface of the cavity structure, taper springs (93) are arranged between two adjacent column bases (92), and the section diameter of each taper spring (93) corresponds to the size of each column base (92).

6. An automotive door painting apparatus according to claim 1, characterized in that: the weight stabilizing member (5) comprises:

The fixing seat (51) is connected to the base (4), a column groove (58) and a clamping groove (59) extending out of the column groove (58) are formed in the middle of the fixing seat (51), and a lower annular groove is formed in the top of the fixing seat (51);

The cross section of the supporting seat (52) is T-shaped, the bottom of the supporting seat (52) stretches into the column groove (58), and an upper annular groove corresponding to the lower annular groove is formed in the supporting seat (52);

The elastic pieces (53) are configured into a plurality of elastic pieces (53), and the elastic pieces (53) are circumferentially distributed between the upper annular groove and the lower annular groove;

a fixing ring (54) with an outer wall connected to an inner wall of the clamping groove (59);

A weight stabilizing ball (57) is arranged between the inner wall of the weight stabilizing ring (55) and the supporting seat (52), and a plurality of circumferentially distributed buffer pieces (56) are connected between the outer wall of the weight stabilizing ring (55) and the inner wall of the fixed ring (54).

7. An automotive door painting apparatus according to claim 6, characterized in that: the weight stabilizing ring (55) comprises a weight stabilizing seat (551), one end of the weight stabilizing seat is provided with a concave spherical surface and is matched with the weight stabilizing ball (57), and the other end of the weight stabilizing seat is connected with the buffer piece (56);

the two sides of the weight stabilizing seat (551) are connected with a balance block (552), and one side, far away from the weight stabilizing seat (551), of the balance block (552) is connected with a buffer block (553).

8. An automotive door painting apparatus according to claim 6, characterized in that: the buffer parts (56) are composed of a conical spring and a telescopic column, and two adjacent groups of buffer parts (56) are reversely arranged.

9. A process for coating an automobile door using the automobile door coating apparatus according to any one of claims 1 to 8, comprising the steps of:

s1: pre-cleaning the automobile by a whole automobile manufacturing assembly line;

s2: phosphating the automobile to generate a phosphating film on the surface of the automobile;

s3: carrying out electrophoresis treatment on the automobile to generate an electrophoresis paint film on the surface of the automobile;

S4: the first displacement driving assembly (3) drives the first mechanical arm (6) to carry out movable spraying, and paint supplied by the external feed pipe flows through the auxiliary spray head (8) after passing through the main spray head (7) and finally is sprayed out through the guide disc (10) to realize the coating treatment of an automobile;

When the paint with low fluidity is processed, the rotation direction of the guide disc (10) is the same as the inclination direction of the guide block (102); when the coating with high fluidity is processed, the rotating direction of the guide disc (10) is opposite to the tilting direction of the guide block (102);

s5: the finished automobile is sent to a baking room for baking operation.