U-shaped jig suitable for lifting and spraying car luggage door

Abstract

The invention discloses a U-shaped jig suitable for lifting and spraying a car luggage door, which is used for lifting and spraying the car luggage door on a car production line, relates to the technical field of lifting tools for spraying the car luggage door on the car production line, and comprises a locking device and a pull rod structure, two angle positioning holes are formed in the locking device assembly, a pin shaft at the rear end of the angle positioning pin handle penetrates through the angle positioning clamping block, and the other end of the angle positioning pin handle penetrates through the jig rod to be inserted into the angle positioning hole formed in the locking device assembly; the pull rod structure is formed by rotationally connecting an angle positioning pin and a locking device assembly, a U-shaped structure is arranged between the straight handle section and the right angle of the jig rod, one side, close to the straight handle section of the jig rod, of the U-shaped structure is an oblique angle, and a 90-degree straight bent angle is formed at the other end of the U-shaped structure. A manipulator lifting rod inclined support, a manipulator lifting rod and a hook are arranged behind the 90-degree straight bent angle; according to the car tail door cover spraying device, the problems that in the prior art, in the spraying process of a car tail door cover, defective products are caused by spraying bottom exposure, and the edge of the tail door cover collides with a pull rod due to too small gaps are solved, the coating quality of a car tail door is completely improved, and the problem that in the prior art, the spraying bottom exposure of the car tail door cover is caused is solved.

Description

Technical Field

[0001] A U-shaped jig applicable to the lifting and spraying of a car luggage door, which is used to lift the car trunk door for spraying on the automotive production line, and relates to the technical field of the lifting tooling for spraying the trunk door on the automotive production line. Prior Art In the work of lifting and spraying the car luggage door, the U-shaped jig is a specially designed tool, mainly used to stably and accurately lift the car luggage door during the spraying process, ensuring the smooth progress of the spraying process and the spraying quality. It can provide stable support for the car luggage door, prevent the luggage door from shaking and displacing during the spraying process, help determine the accurate position of the luggage door, enable the spray gun to spray the luggage door according to the preset path and distance, improve the accuracy and consistency of spraying, thereby ensuring that the spraying effect meets the design requirements, and can ensure that the luggage door is in a fixed position and angle during spraying, so that the paint can be evenly attached to the surface of the luggage door, avoiding problems such as uneven spraying and missed spraying. In the prior art, mainly a suspension point is provided to allow an object to be lifted for operation, lacking the functions of stable support and precise positioning of the object. And ordinary spraying hangers are basically a hook or a chain, which can only hang an object and cannot ensure the stability and position accuracy of the object during spraying, and cannot well adapt to the curved shape and complex structure of the luggage door, easily resulting in spraying quality problems.

[0003] A utility model patent with the patent number CN202320040162.2 discloses a combined jig for the painting project of preventing the unlocking of the car tailgate, including a car tailgate connecting lock catch jig and a positioning sliding catch jig for the lower cross beam of the car trunk; the car tailgate connecting lock catch jig includes an unlocking rod and a telescopic lock catch part, and the unlocking rod is connected to the lock catch part; the positioning sliding catch jig for the lower cross beam of the car trunk includes a guiding part and a positioning part, one end of the guiding part is connected to the positioning part, the lock catch part is in contact with the guiding part and in a retracted state, and the lock catch part is in contact with the positioning part and in an extended state. Utilizing the movement track of the car tailgate closing, during the closing process, the lock catch part is in contact with the guiding part and in a retracted state, and the lock catch part is in contact with the positioning part and in an extended state, so that the car tailgate connecting lock catch jig and the positioning sliding catch jig for the lower cross beam of the car trunk are connected, thereby ensuring the relative position between the car tailgate and the lower cross beam of the car trunk, making the car tailgate in a closed state, and effectively preventing the problem that the car tailgate is loosened and opened due to vibration.

[0004] Compared with this technology, this solution is a lifting and spraying fixture for the luggage door of a sedan. The spraying object is different from this technology. In addition, the structure of the fixture is also different. Moreover, the gap between the tailgate edge and the fixture in this technology is very small, often causing bumps and bruises between the fixture and the car door. And due to the small gap, it will also cause problems of spraying occlusion. Generally speaking, in the existing technology, the car door uses a tailgate with a spring-saving structure. During the installation process, the spring will cause the tailgate to open automatically. The tailgate presses down under the action of gravity, reducing the gap between the fixture rod and the car door panel, which is likely to cause spraying occlusion, resulting in insufficient coating coverage, exposed-bottom defective products, and bumps and bruises on the tailgate edge. In such a case, after spraying and alkaline washing, the surface of the steel structure will become rough and it is also easy to cause poor opening and closing due to jamming.

[0005] The purpose of the present invention is to design according to the shape and spraying requirements of the luggage door of a sedan. According to the specific parts of the luggage door, a more stable lifting and precise positioning are designed. And after the U-shaped fixture is hooked, there is enough wide space between the fixture rod and the car door panel, which can make the spraying process more controllable and the spraying effect better. Summary of the Invention

[0006] A U-shaped fixture for lifting and spraying the luggage door of a sedan, comprising a locking device and a pull rod structure: The locking device is composed of a locking device assembly 3, including a locking limit rod 2, an angle limit hole 4, a locking and unlocking rod 5, a locking device mounting table 6, a rotating shaft sleeve 7, a rotating limit device 8, a clamping block 9, an angle positioning pin 10, and an angle positioning block 11; Two angle positioning holes are provided on the locking device assembly 3. The pin shaft at the rear end of the handle of the set angle positioning pin 10 passes through the angle positioning block 11, and the other end passes through the pin hole provided on the fixture rod 1, and then is selectively inserted into the small angle positioning hole or the large angle positioning hole 4 provided on the locking device assembly 3; Preferably: one small angle positioning hole and one large angle positioning hole 4 are provided, and the two angle limit holes are arranged in parallel; Preferably: a spring is sleeved on the angle positioning pin 10 inserted into the angle positioning block 11 The locking limit rod 2 is a crank structure with an arc. The tail end of the locking limit rod 2 is welded and fixed on the vertical surface of the locking device assembly 3, and the other end extends outwards as a crank structure; the locking and unlocking rod 5 cooperates with the crank structure extending outwards on the locking limit rod 2. When the handle 16 of the locking and unlocking rod 5 is rotated, the locking and unlocking rod 5 approaches the vertical surface of the locking device assembly 3, and the crank structure of the locking limit rod 2 will clamp the locking and unlocking rod 5, making it unable to escape at will; The locking device mounting table 6 is a platform for mounting the locking mechanism, including a rotating shaft sleeve 7, a rotating limit device 8, and a clamping stop 9; The clamping stop 9 is arranged at the front end of the locking device mounting table 6. At a position corresponding to the clamping stop 9, a clamping block 17 is provided. The rotating shaft sleeve 7 passes through the locking device mounting table 6 and is sleeved on the vertical shaft of the locking and unlocking rod 5. A bearing is provided on the outer circle of the rotating shaft sleeve 7 passing through the locking device mounting table 6; Preferably, a groove suitable for clamping the rear door panel of the vehicle is provided between the clamping stop 9 and the clamping block 17; The pull rod structure is rotationally connected by an angle positioning pin 10 and the locking device assembly 3, and includes a jig rod 1 connected to the locking device, a straight handle section 12 of the jig rod, an inclined support 13 of the manipulator lifting rod, a manipulator lifting rod 14, and a hook - 15; The straight handle section 12 of the jig rod is arranged between the jig rod 1 and the straight bend angle 18. A U - shaped structure is provided between the straight handle section 12 of the jig rod and the right - angle 18. One side of the U - shaped structure close to the straight handle section 12 of the jig rod is an inclined angle, and the other end forms a 90° straight bend angle 18; Behind the 90° straight bend angle 18, an inclined support 13 of the manipulator lifting rod, a manipulator lifting rod 14, and a hook 15 are provided; Preferably, one end of the inclined support 13 of the manipulator lifting rod is arranged on the vertical rod after the 90° straight bend angle 18 turns, and the other end is arranged on the manipulator lifting rod 14. The hook 15 is arranged at the tail end, and the tail end of the hook 15 forms a 90° angle with the manipulator lifting rod 14; Preferably, rubber pads are provided at the bending part inside the U - shaped structure and in the groove of the hook 15; The beneficial technical effects of the present invention: 1. The designed U - shaped jig applicable to the lifting and spraying of the sedan luggage door has its U - shaped size and shape designed according to the specific size and shape of the sedan luggage door, which can ensure close fitting to the luggage door and provide stable support.

[0007] 2. For the U - shaped jig applicable to the lifting and spraying of the sedan luggage door, at the jig limiting angle, that is, the angle of the U - shaped part on the jig pull rod is increased by 2° - 3° compared with the existing jig. Since the inclination angle of the U - shaped part on the pull rod becomes larger by 2° - 3°, the gap between the tail cover edge and the jig rod is increased to 20 mm. In this way, during use, it can prevent the jig pull rod from bumping against the tail cover edge and avoid damaging the paint on the tail cover edge; 3. The improvement of the pull rod shape, that is, the increase of the U - shaped angle, can increase the gap between the jig pull rod and the tail cover edge, eliminate the shielding of the jig pull rod on the tail door cover during spraying, and completely solve the problem of poor spraying with exposed bottom; 4. In view of the technical effects described in the above points 1 - 3, the quality of the car tailgate during the spraying process is completely improved, eliminating defective products with exposed primer during the spraying of the tailgate caused by the existing technology, as well as the problem of bumping between the edge of the tailgate and the pull rod due to too small a gap. Brief Description of the Drawings

[0008] Figure 1 is a schematic diagram of the general assembly structure of the present invention; Figure 2 is Figure 1 the enlarged three-dimensional structure schematic diagram formed by flipping the circle A in the figure 180° to the left.

[0009] Embodiment: In order to further describe the structure of the present invention in detail, the present invention will be described in detail below with reference to the accompanying drawings.

[0010] In the figure: fixture rod - 1, locking limit rod - 2, locking device assembly - 3, angle limit hole 4, locking / unlocking rod 5, locking device mounting table - 6, rotating shaft sleeve - 7, rotating limit device - 8, clamping stop - 9, angle positioning pin - 10, angle positioning block - 11, straight handle section of the fixture rod - 12, inclined support of the manipulator lifting rod - 13, manipulator lifting rod - 14, hook - 15, handle - 16, block 17, straight - bend angle - 18.

[0011] Embodiment 1: Structure and Installation A U - shaped fixture applicable to the lifting and spraying of a car luggage door, comprising a locking device and a pull rod structure: The locking device is composed of a locking device assembly 3, including a locking limiting rod 2, an angle limiting hole 4, a locking and unlocking rod 5, a locking device mounting table 6, a rotating shaft sleeve 7, a rotating limiting device 8, a clamping stop 9, an angle positioning pin 10, and an angle positioning block 11; Two angle positioning holes are pre-set on the locking device assembly 3. The pin shaft at the rear end of the handle of the set angle positioning pin 10 passes through the angle positioning block 11, and the other end passes through the pin hole provided on the jig rod 1, and then selectively passes through the small angle positioning hole or the large angle positioning hole 4 provided on the locking device assembly 3; One small angle positioning hole and one large angle positioning hole 4 are provided, and the two angle limiting holes are arranged in parallel and can be selected according to needs during use. When a small angle is required to be formed between the locking device assembly 3 and the jig rod, the pin shaft at the rear end of the handle of the positioning pin 10 is inserted into the small angle positioning hole. When a larger angle is required to be formed between the locking device assembly 3 and the jig rod, the pin shaft at the rear end of the handle of the positioning pin 10 is inserted into the large angle positioning hole 4 to form a 90° angle between the locking device assembly 3 and the jig rod. For the convenience of pulling out and inserting, a spring is sleeved on the angle positioning pin 10 inserted into the angle positioning block 11. However, when selecting the angle, pull out the handle of the angle positioning pin 10, move the pin shaft at the rear end of the angle positioning pin 10 together with the jig rod 1 into the large angle positioning hole 4, and release the hand. Under the action of the spring, the pin shaft at the rear end of the angle positioning pin 10 will be inserted into the large angle positioning hole 4 to form a 90° angle between the locking device assembly 3 and the jig rod 1; Such adjustment is to adjust the inclination angle of the U-shaped part on the pull rod of the jig rod 1 according to different vehicle models, which is beneficial to the adjustment of the gap between the tailgate edge and the jig rod, prevents the jig pull rod from colliding with the tailgate edge, and avoids damaging the paint on the tailgate edge; The adjustment of the angle can increase or decrease the gap between the tailgate edge and the jig rod 1, and can also eliminate the shielding of the jig pull rod on the tailgate during spraying, completely solving the problem of poor spraying with exposed substrate; The locking and limiting rod 2 is a crank structure with an arc shape. The tail end of the locking and limiting rod 2 is welded and fixed on the vertical surface of the locking device assembly 3, and the other end is the crank structure that extends outwards. The locking and unlocking rod 5 cooperates with the crank structure extending outwards on the locking and limiting rod 2. When the handle 16 of the locking and unlocking rod 5 is rotated, when the extended crank approaches the vertical surface of the locking device assembly 3, the crank structure of the locking and limiting rod 2 will clamp the locking and unlocking rod 5 so that it cannot be disengaged at will. The locking device mounting table 6 is a platform for mounting the locking mechanism, including a rotating shaft sleeve 7, a rotating limiting device 8, and a clamping stop 9. The clamping stop 9 is arranged at the front end of the locking device mounting table 6, and a clamping block 17 is arranged at a position corresponding to the clamping stop 9. The rotating shaft sleeve 7 passes through the locking device mounting table 6 and is sleeved on the vertical shaft of the locking and unlocking rod 5. A bearing is arranged on the outer circle of the rotating shaft sleeve 7 passing through the locking device mounting table 6. A groove suitable for clamping the rear car door panel is arranged between the clamping stop 9 and the clamping block 17. The jig rod 1 of the pull rod structure is rotationally connected to the locking device assembly 3 by an angle positioning pin 10, and includes a jig rod 1 connected to the locking device, a straight handle section 12 of the jig rod, an inclined support 13 of the manipulator lifting rod, a manipulator lifting rod 14, and a hook 15. The straight handle section 12 of the jig rod is arranged between the jig rod 1 and the straight bend angle 18. A U-shaped structure is arranged between the straight handle section 12 of the jig rod and the right angle 18. One side of the U-shaped structure close to the straight handle section 12 of the jig rod is an inclined angle, and the other end forms a 90° straight bend angle 18. Behind the 90° straight bend angle 18, there are an inclined support 13 of the manipulator lifting rod, a manipulator lifting rod 14, and a hook 15. Such a design is to increase the space at the U-shaped position and avoid hitting the edge of the rear car door. One end of the inclined support 13 of the manipulator lifting rod is arranged on the vertical rod after the 90-degree straight bend angle 18 turns, and the other end is arranged on the manipulator lifting rod 14. The hook 15 is arranged at the tail end, and the tail end of the hook 15 forms a 90° angle with the manipulator lifting rod 14. Rubber pads are arranged at the bent part inside the U-shaped structure and in the groove of the hook 15, which can avoid coating damage caused by friction.

[0012] Embodiment 2: Process of use See Figure 2 The main function of the clamping stop 9 and the clamping block 17 provided on the locking device of the present invention is to ensure that the fixture is embedded in the plate gap of the tail cover, that is, the tail cover of the vehicle can be embedded through the gap between the clamping stop 9 and the clamping block 17. After the tail cover of the vehicle is embedded through the gap between the clamping stop 9 and the clamping block 17, the handle 16 is rotated to make the locking / unlocking rod 5 rotate, and the rotation of the locking / unlocking rod 5 causes the rotation shaft in the rotary sleeve 7 to rotate, driving the rotary handle 19 to rotate by 90°. Then the handle 16 of the rotary handle will be stuck on the crank of the locking limit rod 2 to prevent falling off. Since bearings are provided on the outer circumference of the rotary sleeve 7, the rotation is very smooth; on the locking device assembly 3, large and small angle positioning holes are provided. The large and small angle positioning holes provided are used to limit the angle of the fixture rod 1. There is one small angle positioning hole and one large angle positioning hole 4 respectively. The two angle limiting holes are arranged in parallel on the locking device assembly 3. When in use, when a small angle is to be formed between the locking device assembly 3 and the fixture rod, the pin shaft at the rear end of the handle of the positioning pin 10 is inserted into the small angle positioning hole. When a larger angle is to be formed between the locking device assembly 3 and the fixture rod, the pin shaft at the rear end of the handle of the positioning pin 10 is inserted into the large angle positioning hole 4. When the pin shaft at the rear end of the handle of the positioning pin 10 is inserted into the large angle positioning hole 4, an included angle of 90° can be formed between the locking device assembly 3 and the fixture rod. For the convenience of pulling out and inserting, a spring is also sleeved on the angle positioning pin 10 inserted into the angle positioning block 11, which is convenient for the return of the handle of the angle positioning pin 10 when selecting the angle. Such adjustment is to adjust the inclination angle of the U-shaped part on the pull rod of the fixture rod 1 according to different vehicle models, which is beneficial to the adjustment of the gap between the edge of the tail cover and the fixture rod, preventing the fixture pull rod from colliding with the edge of the tail cover and avoiding damaging the paint on the edge of the tail cover.

[0013] There is a manipulator lifting rod 14 at the rear end of the fixture rod 1. The manipulator lifting rod 14 is used to open the tailgate of the vehicle. During use, after the tail cover is opened, in order to prevent the rear end edge of the tailgate from opening too high, the hook 15 at the rear end of the fixture rod is used to limit the position. In order to strengthen the strength of the rear end of the fixture rod 1, a manipulator lifting rod diagonal support 13 is also provided between the rear end of the fixture rod 1 and the manipulator lifting rod 14, which can avoid strengthening the strength of the horizontally arranged manipulator lifting rod 14 when the manipulator lifts the tailgate and prevent it from being bent when being lifted.

[0014] Furthermore: The lengths of the manipulator lifting rod 14, the manipulator lifting rod diagonal support 13, and the hook 15 provided at the rear end of the fixture rod 1 of the present invention are well-known to those of ordinary skill in the art and can be set by those of ordinary skill in the art according to actual needs, so they will not be elaborated here; Furthermore: The total length of the fixture rod 1 of the present invention can also be skillfully set by those of ordinary skill in the art according to the use environment and the model of the vehicle, so it will not be elaborated here either.

[0015] Further: To achieve the best effect of the present invention, such as a uniform coating thickness, during use, those of ordinary skill in the art can proficiently adjust and optimize the distance between the spray gun and the workpiece to make the spraying angles consistent, so as to achieve a uniform coating thickness, and these will not be elaborated here.

Claims

1. A U-shaped jig applicable to the lifting and spraying of the luggage door of a sedan, comprising a locking device and a pull rod structure, characterized in that: The locking device is composed of a locking device assembly (3), including a locking limit rod (2), an angle limit hole (4), a locking and unlocking rod (5), a locking device mounting table (6), a rotating shaft sleeve (7), a rotation limit device (8), a clamping stop block (9), an angle positioning pin (10), and an angle positioning block (11); Two angle positioning holes are provided on the locking device assembly (3). The pin shaft at the rear end of the handle of the provided angle positioning pin (10) passes through the angle positioning block (11), and the other end passes through the pin hole provided on the jig rod (1), and then is selectively inserted into the small angle positioning hole or the large angle positioning hole (4) provided on the locking device assembly (3); The locking limit rod 2 is a crank structure with an arc shape. The tail end of the locking limit rod 2 is welded and fixed on the vertical surface of the locking device assembly 3, and the other end extends outward as a crank structure; the locking and unlocking rod 5 cooperates with the crank structure extending outward on the locking limit rod 2; The clamping stop block 9 is provided at the front end of the locking device mounting table 6. A block 17 is provided at a position corresponding to the clamping stop block 9. The rotating shaft sleeve 7 passes through the locking device mounting table 6 and is sleeved on the vertical shaft of the locking and unlocking rod 5. The pull rod structure is rotationally connected by the angle positioning pin 10 and the locking device assembly 3, and includes a jig rod 1 connected to the locking device, a straight handle section 12 of the jig rod, an inclined support 13 of the manipulator lifting rod, a manipulator lifting rod 14, and a hook 15; The straight handle section 12 of the jig rod is provided between the jig rod 1 and the straight bend angle 18. A U-shaped structure is provided between the straight handle section 12 of the jig rod and the right angle 18. One side of the U-shaped structure close to the straight handle section 12 of the jig rod is an inclined angle, and the other end forms a 90-degree straight bend angle 18.

2. The U-shaped jig applicable to the lifting and spraying of the luggage door of a sedan according to claim 1, wherein: One small angle positioning hole and one large angle positioning hole 4 are provided, and the two angle limit holes are arranged in parallel.

3. The U-shaped fixture applicable to the lifting and spraying of the sedan luggage door according to claim 1, wherein: A spring is sleeved on the angle positioning pin (10) inserted into the angle positioning block (11).

4. The U-shaped fixture applicable to the lifting and spraying of the sedan luggage door according to claim 1, wherein: The locking device mounting table (6) is a platform for installing the locking mechanism, including a rotating shaft sleeve (7), a rotation limit device (8), and a clamping stop block (9).

5. The U-shaped jig applicable to the lifting and spraying of the luggage door of a sedan according to claim 1, characterized in that: A bearing is provided on the outer circle of the rotating shaft sleeve (7) passing through the locking device mounting table (6).

6. The U-shaped jig applicable to the lifting and spraying of the sedan luggage door according to claim 1, wherein: A groove suitable for clamping into the rear car door panel is provided between the clamping stop block (9) and the block (17).

7. The U-shaped jig applicable to the lifting and spraying of the sedan luggage door according to claim 1, wherein: An inclined support 13 of the manipulator lifting rod, a manipulator lifting rod 14, and a hook 15 are provided behind the 90-degree straight bend angle (18).

8. The U-shaped jig applicable to the lifting and spraying of the luggage door of a sedan according to claim 7, wherein: One end of the inclined support 13 of the manipulator lifting rod is provided on the vertical rod after the 90-degree straight bend angle (18) turns, and the other end is provided on the manipulator lifting rod (14). The hook (15) is provided at the tail end, and the tail end of the hook (15) forms a 90-degree angle with the manipulator lifting rod (14).

9. The U-shaped jig applicable to the lifting and spraying of the luggage door of a sedan according to claim 1, wherein: Rubber pads are provided in the groove of the hook 15 and the bent part in the U-shaped structure.

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