Automobile cover coating integrated tool

Abstract

The invention discloses an automobile cover coating integrated tool which comprises a base, the base comprises a base cross beam and a supporting frame arranged on the base cross beam and used for supporting and positioning a cover, and a positioning pin used for being inserted into a positioning hole in a cabin cross beam is arranged at the bottom of the base cross beam. The limiting structure is used for being locked on a cabin cross beam, and the limiting structure and the base cross beam can be hinged and connected by relatively rotating to adjust the position. The rotating body used for locking the position in the tool can rotate and adjust the position according to actual use requirements, so that the electrophoresis and finish paint operation requirements are met, and the electrophoresis and finish paint integrated tool can improve the production efficiency, reduce the labor intensity, reduce the tool types and reduce the management cost and the logistics cost.

Description

Technical Field

[0001] This invention relates to the field of automotive coating technology, and in particular to an integrated tooling for coating automotive hoods. Background Technology

[0002] As automobile production becomes increasingly automated, production convenience is receiving more and more attention. Currently, hood tooling is generally divided into two categories: electrophoresis tooling and topcoat tooling. Switching between them during the production process leads to a heavy workload for employees, an increase in process HPV, multiple tooling types, and high management and logistics costs.

[0003] In related technologies, solutions for the hood painting production process mainly involve setting suitable tooling process holes in the engine compartment crossbeam area, installing electrophoresis tooling to connect the hood for electrophoresis, and then switching to the topcoat opening tooling in the sealant section to achieve body painting production. The body needs to be switched between the pretreatment electrophoresis and sealant sections. During the pretreatment electrophoresis section, the hood needs to be fixed to prevent problems such as hood loss of control leading to electrophoresis process failure, hood deformation, and poor electrophoresis. In the sealant and topcoat sections, the hood needs to be opened for sealing and spraying operations. This necessitates tooling switching, resulting in a heavy workload for employees, increased process HPV, multiple tooling types, and high management and logistics costs.

[0004] For example, patent CN105643509A discloses a car rear door painting fixture, which includes: a support frame, two support arms, and two connecting rods; the support frame has a polygonal structure, and each of the two support arms is fixed to the support frame; both connecting rods are L-shaped, and one end of each connecting rod is fixedly connected to the support frame; the connection positions of the two connecting rods and the support frame, and the connection position of any one of the two support arms and the support frame, are respectively located at the three vertices of a triangle; the fixture position is fixed and cannot be adjusted according to the requirements of electrophoresis and topcoat. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides an integrated tooling for automotive hood painting, which can be adjusted in position according to the requirements of electrophoresis and topcoat, without the need to switch tooling.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: The integrated tooling for painting the car hood includes a base, which includes a base beam and a support frame on the base beam for supporting and positioning the hood. The bottom of the base beam is provided with a positioning pin for inserting into a positioning hole on the hood beam. It also includes a limiting structure for locking onto the hood beam. The limiting structure and the base beam are hinged together so that their positions can be adjusted relative to each other.

[0007] Further or preferred: The support frame includes a stabilizing rod for connecting to the inner panel of the hood and a pair of limiting spring hooks. The stabilizing rod is located in the middle of the base beam, and the pair of limiting spring hooks are located on both sides of the base beam.

[0008] The base beam has an inverted U-shaped structure, and the positioning pin is located at the lower end of the base beam.

[0009] The defined structure is a frame structure, and a tooling handle is connected to the frame structure.

[0010] The frame structure is provided with a horizontally penetrating rotating shaft, the end of which is hinged to the base beam.

[0011] The limiting structure includes a pair of side plates connected by a connecting plate structure. The inner end of the tooling handle is provided with a limiting pin for inserting into the process hole in front of the engine room crossbeam. The connecting plate structure is provided with a through hole through which the limiting pin passes.

[0012] The connecting plate structure includes a middle connecting plate and a rear connecting plate arranged side by side, and both the middle connecting plate and the rear connecting plate are provided with aligned through holes.

[0013] The tooling handle includes a connected end plate and a wristband, and the end plate is provided with a set of limit pins arranged side by side.

[0014] The limiting pin is equipped with a limiting pad to prevent the tooling handle from falling off the frame structure.

[0015] A limiting spring is provided between the middle connecting plate and the rear connecting plate, and a set of limiting grooves are provided on the limiting pin along the axial direction for the limiting spring to be engaged and positioned.

[0016] Compared with the prior art, the present invention has the following advantages: The integrated tooling for painting car hoods has a reasonable structural design. The rotating body in the tooling, which is used to lock the position, can be rotated and adjusted according to actual usage needs, thereby meeting the needs of electrophoresis and topcoat operations. The integrated tooling for electrophoresis and topcoat can improve production efficiency, reduce labor intensity, reduce tooling types, and reduce management and logistics costs. Attached Figure Description

[0017] The following is a brief explanation of the contents of each of the accompanying drawings and the markings in the drawings: Figure 1 This is an isometric schematic diagram of the tooling of the present invention.

[0018] Figure 2 This is a top view of the tooling of the present invention.

[0019] Figure 3 This is a schematic diagram of the tooling used in this invention.

[0020] Figure 4This is a schematic diagram showing the connection between the tooling and the machine cover of the present invention.

[0021] Figure 5 This is a schematic diagram of the locking state of the present invention.

[0022] Figure 6 This is a schematic diagram of the unlocked state of the present invention.

[0023] In the picture: 1-Base; 11-Base beam, 12-Limit spring hook, 13-Stabilizing rod, 14-Rotating shaft, 15-Positioning pin; 2-Revolutionary body; 21-Side plate, 22-Middle connecting plate, 23-Limit spring, 24-Rear connecting plate; 3-Tool handle; 31-Limit gasket, 32-Limit pin, 33-Limit groove I, 34-Limit groove II; 4-Machine cover; 5. Body. Detailed Implementation

[0024] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and through the description of the examples.

[0025] like Figures 1 to 6 As shown, the integrated tooling for painting the car hood includes a base 1 and a limiting structure for locking onto the engine compartment crossbeam; the base includes a base crossbeam and a support frame provided on the base crossbeam for supporting and positioning the hood.

[0026] The bottom of the base beam 11 is provided with a positioning pin 15 for insertion into the positioning hole on the nacelle beam. The positioning pin cooperates with the positioning hole on the upper part of the nacelle beam to realize the positioning of the base beam. The limiting structure is hinged to the base beam so that the relative position can be adjusted. The limiting structure forms a rotating body 2 that can rotate relative to the base beam. The position can be adjusted according to the actual use requirements, thereby meeting the needs of electrophoresis and topcoat operation.

[0027] The support frame includes a stabilizing rod 13 for connecting to the inner panel of the cover and a pair of limiting spring hooks 12. The stabilizing rod is located in the middle of the base beam, and the pair of limiting spring hooks are located on both sides of the base beam. The ends of the stabilizing rod and the limiting spring hooks are hook-shaped structures that cooperate with the process holes on the inner panel of the cover to achieve the positioning of the cover.

[0028] The base beam 11 has an inverted U-shaped structure, with the positioning pin located at the lower end of the base beam and a pair of limiting springs hooked to the two outer sides of the base beam. The structure is reasonably designed.

[0029] The structure is a frame structure, with a tooling handle 3 connected to it for easy operation and adjustment. A transverse rotating shaft is provided on the frame structure, with its end hinged to the base beam.

[0030] The limiting structure includes a pair of side plates 21, which are connected by a connecting plate structure, making the structure stable and reliable. The inner end of the tooling handle is provided with a limiting pin 32 for inserting into the process hole in front of the engine room crossbeam. The connecting plate structure is provided with a through hole, through which the limiting pin passes. The limiting pin can be locked by cooperating with the process hole in front of the engine room crossbeam.

[0031] Furthermore, the connecting plate structure includes a middle connecting plate 22 and a rear connecting plate 24 arranged side by side, both of which are provided with aligned through holes; the tooling handle includes a connected end plate and a wrist ring, and the end plate is provided with a set of limit pins arranged side by side; the structure is stable and reliable.

[0032] The limiting pin is equipped with a limiting washer 31 to prevent the tooling handle from falling off the frame structure. A limiting spring is provided between the middle connecting plate and the rear connecting plate, and the limiting pin is provided with a set of limiting grooves along the axial direction for the limiting spring to engage and position, which can position the handle.

[0033] The present invention provides an integrated tooling structure for automotive hood painting. The rotating body in the tooling, used for locking the position, can be rotated and adjusted according to actual usage requirements, thereby meeting the needs of electrophoresis and topcoat operations. The integrated tooling for electrophoresis and topcoat can improve production efficiency, reduce labor intensity, reduce tooling types, and reduce management and logistics costs.

[0034] Specific examples of the present invention are as follows: The integrated electrophoresis and topcoat application fixture for an automotive hood includes: a base, a rotating body, and a fixture handle. The base includes: a stabilizer bar for stabilizing the fixture during the topcoat and adhesive application stages, restricting the X-axis freedom; limit spring hooks I and II for connecting and fixing the hood, restricting the Y and Z-axis freedom; a connecting plate for connecting the components on the base and acting as a limiter for the rotating body; a rotating shaft for connecting the rotating parts; and positioning pins I and II for connecting and positioning the engine compartment crossbeam. The rotating part includes: a pair of side plates for connecting to the base and acting as hinges; a pair of connecting plates for connecting the side plates and fixing the handle; and limit springs. The fixture handle includes: limit pin I with two limit grooves for X-axis limit of the handle and Z-axis limit of the hood; limit pin II for Z-axis limit of the hood; two limit washers for X-axis limit of the handle to prevent it from falling off; and a handle for controlling the X-axis insertion and removal of the pin and the Z-axis opening and closing of the hood.

[0035] This integrated electrophoresis and topcoat fixture for automotive hoods is used to connect the hood to the vehicle body during the pretreatment, electrophoresis, adhesive application, and topcoat processes. The fixture utilizes limit springs and stabilizer bars on a base to connect the hood; the rotating body is mounted on the base's rotation shaft and supported by locating pins, positioned within the locating holes of the engine compartment crossbeam.

[0036] The preferred embodiment is as follows: like Figures 1 to 6 As shown, an integrated tooling for electrophoresis and topcoat application on an automotive hood includes a base 1, a rotating body 2, and a tooling handle 3 (as shown). Figure 1 and Figure 2 (As shown). The base 1 includes: a base beam 11, limiting spring hooks 12, a stabilizing rod 13, a rotating shaft 14, and a positioning pin 15. The base beam 11 serves as a carrier, connecting the various structural components and providing rotational restraint for the rotating body, preventing excessive rotation angles that could damage the machine cover. There are two limiting spring hooks 12, one on each side, connected to corresponding tooling mounting holes on the inner plate of the machine cover. The limiting spring hooks 12 are stably installed in the holes using spring principles (e.g., ...). Figure 4 As shown), the tooling can move up and down as the cover opens and closes, while restricting the tooling's Z and Y degrees of freedom to prevent it from swaying left and right or up and down. The double-point support avoids the risk of deformation caused by complex stress on the cover within the pretreatment electrophoresis tank and high-temperature baking in the drying oven. The stabilizer bar 13 is connected to the inner panel of the cover and hooked into the mounting holes of the inner panel (e.g., ...). Figure 4 As shown), the tooling is stabilized, and the X-axis degree of freedom of the tooling is restricted to prevent the tooling from swaying back and forth; the rotating shaft 14 provides a connection point for the rotating body 2 and serves as the rotation axis of the rotating body 2, allowing the rotating body 2 to rotate around it. In the pretreatment electrophoresis section, the rotating body 2 and the tooling handle 3 are rotated to the maximum angle (at the limit of the base beam 11). In the glue coating section, when the support rod supports the cover, the rotating body and the handle remain in a free hanging state to avoid the handle blocking the glue coating path and affecting the glue coating operation. In the middle surface coating section, with the cover closed, the rotating body 2 and the tooling handle 3 are rotated to the maximum angle (at the limit of the base beam 11); the positioning pin 15 is used to connect the car body. The positioning pin 15 is inserted into the positioning hole of the car body beam to stabilize the cover and keep the cover in a 3° open state (e.g., Figure 3 As shown, it satisfies the requirements of venting and draining of the hood in the pretreatment electrophoresis section, so that the inner cavity of the hood is coated with a uniform electrophoretic paint film in the electrophoresis section, while preventing the hood from contacting the car body and causing damage to the electrophoretic paint film, which would affect the anti-corrosion quality of the car body. It also meets the opening requirements of the hood in the adhesive application and painting sections, preventing the hood from contacting the car body and causing damage to the inner rubber strip of the hood and the paint film of the hood, which would affect the appearance quality.

[0037] The rotating body 2 includes a side plate 21, a middle connecting plate 22, a limiting spring 23, and a rear connecting plate 24. There are two side plates 21, one on the left and one on the right, which form the basis of the rotating body 2. The side plates have holes that cooperate with the rotating shaft 14, so that the rotating body 2 can rotate around the rotating shaft 14. The middle connecting plate 22 and the rear connecting plate 24 are used to connect the side plates, and two round holes are opened at corresponding positions on the two plates to provide insertion and removal positioning channels for the tooling handle 3. The limiting spring 23 is located between the middle connecting plate 22 and the rear connecting plate 24 and is welded to the side plate 21 to limit the handle and prevent the handle from moving.

[0038] The tooling handle 3 includes a limiting washer 31, a limiting pin 32, a limiting groove I 33, and a limiting groove II 34; there are two limiting washer 31s, one on each side, to prevent the handle from detaching from the rotating body connecting plate during the pulling process; the limiting pin 32 works in conjunction with the limiting grooves I 33 and II 34, and in the pretreatment electrophoresis section, the handle advances to the position where the limiting groove II 34 matches the limiting spring 23, and the limiting pin 32 is fixed in the process hole on the front side of the body beam (e.g., Figure 5 As shown), it serves to lock the hood to the body. In the adhesive and topcoat section, the handle retracts to the matching position of the limit groove I33 and the limit spring 23 (as shown). Figure 6 As shown), to prevent the locating pin from being inserted into the crossbeam hole of the vehicle body and locking the front cover, the handle rotates to its maximum angle with the rotating body 2 when the cover is closed, and is in a horizontal state. This facilitates manual opening of the cover in the glue application section, installation of the support rod, application of the cover edge glue and engine compartment inner sealant. In the middle surface coating section, the cover can be manually opened by hand, the support rod installed, or the cover can be opened by robot gripping, and the inner side of the cover and engine compartment area can be sprayed. When the support rod supports the open state, the handle hangs freely with the rotating body 2 to avoid affecting the edge planing glue application operation.

[0039] After the integrated tooling is installed and adjusted on the welding line, it is placed between the hood and the front crossbeam of the vehicle body. Positioning pin 15 is inserted into the process hole of the tooling on the front crossbeam to fix the hood, opening it 3° to prevent deformation caused by contact between the hood and the vehicle body, or to reduce the pre-installation of buffer blocks (improving work efficiency). After being connected to the conveyor line, it proceeds to the painting stage. Entering the pre-cleaning station for painting, it reduces tooling installation and buffer block removal work (improving work efficiency). Workers open the front hood by holding the handle, inspect the inside of the hood and the front compartment area, address any issues that do not meet cleanliness and quality requirements, record and report these issues to the welding team for avoidance. After lowering the hood, positioning pin 15 is inserted into the process hole of the tooling on the front crossbeam to fix the hood, opening it 3°. Simultaneously, the limit spring 23 is manually released, and the handle is pushed so that the handle limit pin 32 is inserted into the positioning hole on the front side of the crossbeam (e.g., ...). Figure 5(As shown), then lower the limiting spring to fix the position of the limiting groove II 34, preventing the handle from failing to lock when retracted. Fix and lock the hood to the front crossbeam of the vehicle body. After the vehicle body enters the pretreatment electrophoresis tank, the hood will not float and flip backward due to the buoyancy of the tank liquid, thus avoiding the risk of deformation. During the tank entry process, the air inside the hood is discharged through the exhaust rib at the rear end of the hood, ensuring complete pretreatment electrophoresis treatment of the hood cavity. During the tank exit process, the liquid inside the hood cavity is drained through the drain rib at the rear end of the hood, avoiding the risk of liquid accumulation causing tank liquid cross-contamination and back dissolution of the paint film. After the electrophoresis baking is completed, retract the limiting pin 32 of the handle to the outside of the process hole on the front side of the front crossbeam of the vehicle body (e.g. Figure 6 As shown), this reduces tooling changes (disassembly and installation, improving work efficiency), and uses a limit spring 23 to fix it to the limit groove I 33 position to prevent the limit pin 32 from re-entering the inner side of the process hole on the front side of the front crossbeam of the vehicle body and locking, which would affect the opening of the hood. In subsequent work stations, if work needs to be done on the inside of the hood and inside the engine compartment (applying glue, painting, inspection, etc.), the hood can be opened by the handle. When working manually, the hood is supported by a support rod, and the handle and rotating body hang freely to avoid affecting the work. When the robot is working, the robot directly grabs the handle to keep the hood open.

[0040] After the painting operation is completed and the car body is qualified, the buffer block is installed. The integrated electrophoresis and topcoat tooling for the car hood is disassembled. The tooling is classified and placed on the tooling rack according to the paint accumulation and condition of the tooling. The tooling with severe paint accumulation or deformation is transported to the tooling inspection and maintenance area to clean and maintain the paint accumulation on the tooling, check the conformity of the tooling condition, and isolate and repair the integrated electrophoresis and topcoat tooling for the car hood that does not meet the requirements. The reusable tooling and qualified tooling in the maintenance area are transferred to the welding adjustment line for recycling.

[0041] The above description is merely an illustration of preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiments of the present invention.

[0042] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the concept and technical solution of the present invention, or the direct application of the concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. An integrated tooling for painting an automotive hood, comprising a base, the base including a base beam and a support frame disposed on the base beam for supporting and positioning the hood, wherein the bottom of the base beam is provided with a positioning pin for inserting into a positioning hole on the hood beam, characterized in that: It also includes a limiting structure for locking onto the cabin crossbeam, the limiting structure being hinged to the base crossbeam for relative rotational adjustment of position.

2. The integrated automotive hood painting tooling as described in claim 1, characterized in that: The support frame includes a stabilizing rod for connecting to the inner panel of the hood and a pair of limiting spring hooks. The stabilizing rod is located in the middle of the base beam, and the pair of limiting spring hooks are located on both sides of the base beam.

3. The integrated automotive hood painting tooling as described in claim 1, characterized in that: The base beam has an inverted U-shaped structure, and the positioning pin is located at the lower end of the base beam.

4. The integrated automotive hood painting tooling as described in claim 1, characterized in that: The defined structure is a frame structure, and a tooling handle is connected to the frame structure.

5. The integrated automotive hood painting tooling as described in claim 4, characterized in that: The frame structure is provided with a horizontally penetrating rotating shaft, the end of which is hinged to the base beam.

6. The integrated automotive hood painting tooling as described in claim 4, characterized in that: The limiting structure includes a pair of side plates connected by a connecting plate structure. The inner end of the tooling handle is provided with a limiting pin for inserting into the process hole in front of the engine room crossbeam. The connecting plate structure is provided with a through hole through which the limiting pin passes.

7. The integrated automotive hood painting tooling as described in claim 6, characterized in that: The connecting plate structure includes a middle connecting plate and a rear connecting plate arranged side by side, and both the middle connecting plate and the rear connecting plate are provided with aligned through holes.

8. The integrated automotive hood painting tooling as described in claim 7, characterized in that: The tooling handle includes a connected end plate and a wristband, and the end plate is provided with a set of limit pins arranged side by side.

9. The integrated automotive hood painting tooling as described in claim 8, characterized in that: The limiting pin is equipped with a limiting pad to prevent the tooling handle from falling off the frame structure.

10. The integrated automotive hood painting tooling as described in claim 9, characterized in that: A limiting spring is provided between the middle connecting plate and the rear connecting plate, and a set of limiting grooves are provided on the limiting pin along the axial direction for the limiting spring to be engaged and positioned.

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