Omnibearing automatic spraying production line

Abstract

The invention relates to an all-dimensional automatic spraying production line, which is characterized in that a spray head assembly can perform multi-degree-of-freedom movement in different planes through rotation driving of a cross beam around a central fixed shaft and combination of a vertical and horizontal state switching function of a swinging cross rod; through the swing hinging design of the spray head assembly and the transmission assembly of the sliding rod, the angle of the spray head can be dynamically adjusted in the spraying process, a composite motion trail is formed, dead-corner-free covering on the surface of the workpiece is achieved, and the spraying uniformity is remarkably improved; due to the linkage design of the sliding rod and the transmission assembly, when the cross beam rotates, the reciprocating driving assembly can synchronously drive the sliding rod to slide along the swing cross rod, and the spray head assembly is forced to swing back and forth through the transmission assembly; due to the dynamic adjusting mechanism, the nozzle can simulate manual spraying, and the spraying effect is further improved; in addition, due to the design of mechanical linkage, response delay caused by traditional motor or pneumatic independent control can be reduced, and it is ensured that actions of all the nozzles are highly synchronous.

Description

Technical Field

[0001] The present invention relates to the technical field of spraying, and particularly relates to an all-round automatic spraying production line. Background Art

[0002] In industrial production, the spraying process is widely used in the surface treatment of products such as automobiles, furniture, and metal components. Traditional spraying equipment mostly adopts fixed nozzles or a simple robotic arm to control the movement of the nozzle, which has problems such as uneven spraying coverage, dead angles, or blind spots, especially for workpieces with complex shapes or multi-angle surfaces. In the prior art, some automatic spraying equipment attempts to improve flexibility through multi-axis robotic arms or rotating platforms, but the equipment structure is complex and the cost is high.

[0003] Therefore, there is an urgent need for an automatic spraying device with a compact structure, flexible movement, and capable of achieving multi-angle and all-round spraying to improve spraying quality and efficiency. Summary of the Invention

[0004] The present invention aims to solve at least one of the problems existing in the related prior art to some extent. For this purpose, the present invention provides an all-round automatic spraying production line.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An all-round automatic spraying production line includes a central fixed shaft. A cross beam is rotatably installed at the lower end of the central fixed shaft. Spraying devices are arranged at both ends of the cross beam. The spraying device includes a swing cross bar swingably hinged to the end of the cross beam. Along the length direction of the swing cross bar, a plurality of nozzle assemblies are swingably hinged at intervals. A sliding rod capable of sliding along the length direction of the swing cross bar is arranged outside the swing cross bar. A transmission assembly is connected between the rear side of the nozzle assembly and the sliding rod. When the sliding rod slides, the nozzle assembly can be driven to swing through the transmission assembly. A swing driving device is also arranged on the cross beam. The swing driving device is used to drive the swing cross bar to swing, so that the swing cross bar is in a vertical state or a horizontal state. A reciprocating driving assembly is also arranged on the central fixed shaft. The reciprocating driving assembly is connected to the sliding rod, and when the cross beam drives the spraying device to rotate relative to the central fixed shaft, the nozzle assembly can be driven to reciprocate and swing through the reciprocating driving assembly.

[0007] In some embodiments, a plurality of through slot openings corresponding to the nozzle assemblies are arranged on the swing cross bar. The nozzle assembly includes a spray gun mounting seat swingably arranged in the through slot opening, and a spray gun is arranged on the spray gun mounting seat.

[0008] In some embodiments, the transmission assembly includes an extension seat provided at the rear side of the spray gun mounting seat. A chute is provided on the extension seat, and a guiding post is provided on the sliding rod. The guiding post is arranged in the chute.

[0009] In some embodiments, the swing driving device includes a rotating shaft fixedly provided at the upper end of the swing cross bar. The rotating shaft is rotatably arranged at the end of the cross beam, and a first gear is coaxially fixed on the rotating shaft. A cylinder is provided on the cross beam, a pushing seat is provided on the piston rod of the cylinder, and a rack capable of meshing with the first gear is provided on the pushing seat.

[0010] In some embodiments, the reciprocating driving assembly includes a disc provided on the central fixed shaft. An annular end face wave groove is provided on the lower end face of the disc. An annular seat is also coaxially provided at the lower end of the disc. A circumferential wave groove is provided on the circumferential outer wall of the annular seat. A sphere is provided at the upper end of the sliding rod. When the swing cross bar is in the vertical state, the sphere abuts against the annular end face wave groove. When the swing cross bar is in the horizontal state, the sphere abuts against the circumferential wave groove. A first spring is further provided at the lower end of the sliding rod, and a limiting plate is provided at the lower end of the swing cross bar. The lower end of the first spring abuts against the limiting plate.

[0011] In some embodiments, the disc can axially move up and down along the central fixed shaft, but cannot rotate circumferentially along the central fixed shaft. An auxiliary switching assembly connected to the swing driving device is further provided on the cross beam. When the swing driving device drives the swing cross bar to swing, the disc can be driven to move through the auxiliary switching assembly, so that the annular end face wave groove or the circumferential wave groove is separated from the sphere.

[0012] In some embodiments, the auxiliary switching assembly includes a column support rod provided on the pushing seat. A convex ring is provided at the lower end of the disc and inside the annular seat. A guiding inclined surface is provided on the outer edge of the convex ring. The column support rod is arranged between the annular seat and the guiding inclined surface. When the rack drives the column support rod to move, the upper end of the column support rod can abut against the guiding inclined surface, thereby driving the convex ring and the disc to move.

[0013] In some embodiments, a limiting ring is provided at the upper end of the central fixed shaft, and a second spring is sleeved on the central fixed shaft. The upper end of the second spring abuts against the limiting ring, and the lower end abuts against the disc.

[0014] In some embodiments, a motor is provided on one side of the central fixed shaft, a second gear is provided on the output shaft of the motor, and a gear ring coaxially arranged with the central fixed shaft is provided on the cross beam. The second gear meshes with the gear ring.

[0015] In some embodiments, a plurality of upper spray guns are further provided at the lower end of the cross beam.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. Through the rotation drive of the cross beam around the central fixed axis, combined with the function of switching the vertical and horizontal states of the swing cross bar, the spray head assembly can perform multi-degree-of-freedom movement in different planes; furthermore, through the swing hinge design of the spray head assembly in cooperation with the transmission assembly of the sliding rod, the spray head angle can be dynamically adjusted during the spraying process to form a composite movement trajectory, achieving a dead-angle-free coverage of the workpiece surface and significantly improving the spraying uniformity.

[0018] 2. The linkage design of the sliding rod and the transmission assembly enables the reciprocating drive assembly to synchronously drive the sliding rod to slide along the swing cross bar when the cross beam rotates, forcing the spray head assembly to perform reciprocating swings through the transmission assembly; this dynamic adjustment mechanism enables the spray head to simulate manual spraying, further improving the spraying effect.

[0019] 3. In addition, through the design of mechanical linkage, the response delay caused by the separate control of traditional motors or pneumatics can be reduced, ensuring that the actions of each spray head are highly synchronized and avoiding the problem of uneven spraying caused by signal transmission or software control errors; at the same time, the use of high-cost components such as motors and servo drivers is reduced, and multi-degree-of-freedom movement is achieved through a simple mechanical structure, and the cost performance is significantly better than pure electric or robot spraying solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Is a three-dimensional schematic diagram of the present invention when the swing cross bar is in a vertical state;

[0021] Figure 2 Is a front view schematic diagram of the present invention when the swing cross bar is in a vertical state;

[0022] Figure 3 Is a cross-sectional schematic diagram of the present invention when the swing cross bar is in a vertical state;

[0023] Figure 4 For the present invention Figure 1 An enlarged schematic diagram of part A;

[0024] Figure 5 For the present invention Figure 1 An enlarged schematic diagram of part B;

[0025] Figure 6 For the present invention Figure 3 An enlarged schematic diagram of part C;

[0026] Figure 7 Is a partial structural schematic diagram of the present invention;

[0027] Figure 8 A three-dimensional schematic diagram when the swinging crossbar of the present invention is in a horizontal state;

[0028] Figure 9 For the present invention Figure 8 An enlarged schematic diagram at position D. Specific embodiments

[0029] The following specific implementation content provides various different embodiments or examples for implementing the present invention. Of course, these are only embodiments or examples and are not intended to be restrictive. Additionally, repeated reference numerals may be used in different embodiments, such as repeated numbers and / or letters. These repetitions are for the purpose of simply and clearly describing the present invention and do not represent a specific relationship between the different embodiments and / or structures being discussed.

[0030] As Figures 1-9 shown, an all-round automatic spraying production line includes a central fixed shaft 1. A cross beam 2 is rotatably installed at the lower end of the central fixed shaft 1. Spraying devices are provided at both ends of the cross beam 2. The spraying device includes a swinging crossbar 3 that is swingably hinged to the end of the cross beam 2. Along the length direction of the swinging crossbar 3, a number of spray head assemblies are swingably hinged at intervals. A sliding rod 4 that can slide along the length direction of the swinging crossbar 3 is provided outside the swinging crossbar 3. A transmission assembly is connected between the rear side of the spray head assembly and the sliding rod 4. When the sliding rod 4 slides, it can drive the spray head assembly to swing through the transmission assembly. A swing driving device is also provided on the cross beam 2. The swing driving device is used to drive the swinging crossbar 3 to swing, so that the swinging crossbar 3 is in a vertical state or a horizontal state. A reciprocating driving assembly is further provided on the central fixed shaft 1. The reciprocating driving assembly is connected to the sliding rod 4. When the cross beam 2 drives the spraying device to rotate relative to the central fixed shaft 1, it can drive the spray head assembly to reciprocate through the reciprocating driving assembly.

[0031] According to the above structure, through the rotation drive of the cross beam 2 around the central fixed shaft 1 and combined with the function of switching the vertical and horizontal states of the swinging crossbar 3, the spray head assembly can perform multi-degree-of-freedom movement in different planes; furthermore, through the swing hinge design of the spray head assembly and the transmission assembly of the sliding rod 4, the spray head angle can be dynamically adjusted during the spraying process to form a composite movement trajectory, achieving a dead-angle-free coverage of the workpiece surface and significantly improving the spraying uniformity.

[0032] Thus, when spraying a workpiece with a relatively high height is required, the swinging crossbar 3 can be switched to the vertical state (as Figure 1 shown), and when spraying a workpiece with a relatively large end face area is required, the swinging crossbar 3 can be switched to the horizontal state (as Figure 8 shown).

[0033] The linkage design between the sliding rod 4 and the transmission component enables the reciprocating drive component to synchronously drive the sliding rod 4 to slide along the swinging crossbar 3 when the crossbeam 2 rotates, and forces the nozzle component to swing reciprocally through the transmission component; this dynamic adjustment mechanism enables the nozzle to simulate manual spraying and further improves the spraying effect.

[0034] In addition, through the design of mechanical linkage, the response delay caused by traditional motor or pneumatic single control can be reduced, ensuring highly synchronous actions of each nozzle and avoiding uneven spraying problems caused by signal transmission or software control errors; at the same time, the use of high-cost components such as motors and servo drivers is reduced, and multi-degree-of-freedom motion is achieved through a simple mechanical structure, with significantly better cost performance than pure electric or robotic spraying solutions.

[0035] See Figure 5 As shown, a number of through slot openings 21 corresponding to the nozzle component are provided on the swinging crossbar 3. The nozzle component includes a spray gun mounting seat 22 swingably disposed within the through slot opening 21, and a spray gun 23 is provided on the spray gun mounting seat 22.

[0036] Certainly, when in the vertical state, the spray guns 23 on the swinging crossbars 3 on both sides can be arranged at intervals in sequence, so as to further achieve dead-angle-free coverage of the workpiece surface and significantly improve the spraying uniformity.

[0037] Furthermore, the transmission component includes an extension seat 31 provided at the rear side of the spray gun mounting seat 22. A chute 32 is provided on the extension seat 31, and a guide post 33 is provided on the sliding rod 4. The guide post 33 is disposed within the chute 32. Certainly, a guide seat for guiding the sliding of the sliding rod 4 is also provided on the swinging crossbar 3. When the sliding rod 4 slides, the swinging of the spray gun mounting seat 22 and the spray gun 23 is achieved through the cooperation of the guide post 33 and the chute 32.

[0038] See Figure 2 、 Figure 4 、 Figure 8 、 Figure 9 As shown, the swing drive device includes a rotating shaft 41 fixedly provided at the upper end of the swinging crossbar 3. The rotating shaft 41 is rotatably disposed at the end of the crossbeam 2, and a first gear 42 is coaxially fixed on the rotating shaft 41. A cylinder 43 is provided on the crossbeam 2, a pushing seat 44 is provided on the piston rod of the cylinder 43, and a rack 45 capable of meshing with the first gear 42 is provided on the pushing seat 44.

[0039] Thus, the first gear 42 meshes with the rack 45 for transmission, ensuring accurate locking of the swing crossbar 3 in the vertical or horizontal position; specifically, the air cylinder 43 pushes the rack 45 to move, driving the rotation of the first gear 42, causing the rotating shaft 41 to drive the swing crossbar 3 to swing, thereby realizing the switching of the swing crossbar 3 between the vertical and horizontal states.

[0040] See Figure 2 , Figure 4 , Figures 7-9 As shown in the figures, the reciprocating drive assembly includes a disc 51 provided on the central fixed shaft 1. A ring-shaped end face wavy groove 52 is provided on the lower end face of the disc 51. An annular seat 53 is coaxially provided at the lower end of the disc 51. A circumferential wavy groove 54 is provided on the circumferential outer wall of the annular seat 53. A sphere 55 is provided at the upper end of the sliding rod 4. When the swing crossbar 3 is in the vertical state, the sphere 55 abuts against the ring-shaped end face wavy groove 52. When the swing crossbar 3 is in the horizontal state, the sphere 55 abuts against the circumferential wavy groove 54. A first spring 56 is further provided at the lower end of the sliding rod 4. A limiting plate 57 is provided at the lower end of the swing crossbar 3. The lower end of the first spring 56 abuts against the limiting plate 57.

[0041] The ring-shaped end face wavy groove 52 and the circumferential wavy groove 54 respectively correspond to the vertical or horizontal state, ensuring that the nozzle always faces the workpiece; specifically, when the sphere 55 abuts against the ring-shaped end face wavy groove 52 (as shown in Figure 2 ), when the crossbeam 2 drives the swing crossbar 3 and the sliding rod 4 to rotate around the central fixed shaft 1, under the action of the first spring 56, the sphere 55 on the sliding rod 4 always abuts against the ring-shaped end face wavy groove 52, so that the sliding rod 4 reciprocates up and down, and then under the action of the transmission assembly, drives the spray gun mounting seat 22 and the spray gun 23 to reciprocate; similarly, when the sphere 55 abuts against the circumferential wavy groove 54 (as shown in Figure 8 ), when the crossbeam 2 drives the swing crossbar 3 and the sliding rod 4 to rotate around the central fixed shaft 1, under the action of the first spring 56, the sphere 55 on the sliding rod 4 always abuts against the circumferential wavy groove 54, so that the sliding rod 4 reciprocates horizontally left and right, and then under the action of the transmission assembly, drives the spray gun mounting seat 22 and the spray gun 23 to reciprocate.

[0042] In the present invention, the disc 51 can axially move up and down along the central fixed shaft 1, but cannot rotate circumferentially along the central fixed shaft 1. An auxiliary switching component connected to the swing driving device is further provided on the cross beam 2. When the swing driving device drives the swing cross bar 3 to swing, the disc 51 can be driven to move through the auxiliary switching component, so that the annular end face wave groove 52 or the circumferential wave groove 54 is separated from the sphere 55; when the swing cross bar 3 swings and switches, the auxiliary switching component can synchronously adjust the position of the disc 51 to avoid mechanical interference and improve the stability during switching.

[0043] See Figure 6 、 Figure 7 、 Figure 9 As shown, the auxiliary switching component includes a column support rod 71 provided on the push seat 44. A convex ring 72 is provided at the lower end of the disc 51 and inside the annular seat 53. A guiding inclined surface 73 is provided on the outer edge of the convex ring 72. The column support rod 71 is arranged between the annular seat 53 and the guiding inclined surface 73. When the rack 45 drives the column support rod 71 to move, the upper end of the column support rod 71 can abut against the guiding inclined surface 73, thereby driving the convex ring 72 and the disc 51 to move.

[0044] The specific working principle of the auxiliary switching component is as follows:

[0045] The cylinder 43 is used to push the rack 45 to move. The rack 45 meshes with the first gear 42 to first realize the swing switching of the swing cross bar 3. In addition, the column support rod 71 abuts against the guiding inclined surface 73, so that the guiding inclined surface 73 converts the horizontal thrust into the vertical movement of the disc 51, causing the disc 51 to move up and down, temporarily separating the sphere 55 from the annular end face wave groove 52 or the circumferential wave groove 54. Of course, the swing cross bar 3 is provided with a limit for the sliding position of the sliding rod 4, and finally the switching of the wave groove contact surface can be realized.

[0046] Furthermore, a limit ring 81 is provided at the upper end of the central fixed shaft 1. A second spring 82 is sleeved on the central fixed shaft 1. The upper end of the second spring 82 abuts against the limit ring 81, and the lower end abuts against the disc 51; the elastic force provided by the second spring 82 enables the disc 51 to quickly return to its position after switching, ensuring the correct contact between the wave groove and the sphere 55.

[0047] Furthermore, a motor 91 is provided on one side of the central fixed shaft 1. A second gear 92 is provided on the output shaft of the motor 91. A gear ring 93 coaxially arranged with the central fixed shaft 1 is provided on the cross beam 2. The second gear 92 meshes with the gear ring 93; the motor 91 drives the gear ring 93 through the second gear 92, driving the cross beam 2 to rotate around the central fixed shaft 1.

[0048] In the present invention, a plurality of upper spray guns 10 are further provided at the lower end of the cross beam 2, which can supplement the spraying in the area below the cross beam 2 through the upper spray guns 10, further eliminating the spraying blind area.

[0049] Combined with the drawings and the above display and description of the basic principles, main features and advantages of the present invention, those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An all-round automatic spraying production line, characterized by: The invention comprises a central fixed shaft (1), a cross beam (2) is rotatably mounted at the lower end of the central fixed shaft (1), a spraying device is arranged at both ends of the cross beam (2), the spraying device comprises a swinging cross bar (3) which is hingedly connected to the end of the cross beam (2) for swinging up and down, a plurality of swinging hinged spray head assemblies are arranged at intervals along the length direction of the swinging cross bar (3), a sliding rod (4) which can slide along the length direction of the swinging cross bar (3) is arranged on the outer side of the swinging cross bar (3), a transmission assembly is connected between the rear side of the spray head assembly and the sliding rod (4), and the sliding rod (4) is connected to the rear side of the spray head assembly. When the rod (4) slides, the nozzle assembly can be driven to swing through the transmission assembly. A swing drive device is also provided on the crossbeam (2), and the swing drive device is used to drive the swing crossbar (3) to swing, so that the swing crossbar (3) is in a vertical state or a horizontal state. A reciprocating drive assembly is also provided on the central fixed shaft (1). The reciprocating drive assembly is connected to the sliding rod (4), and when the crossbeam (2) drives the spraying device to rotate relative to the central fixed shaft (1), the nozzle assembly can be driven to swing reciprocally through the reciprocating drive assembly.

2. The all-round automatic spraying production line according to claim 1 is characterized in that: A plurality of through slots (21) corresponding to the spray head assembly are arranged on the swing crossbar (3); the spray head assembly comprises a spray gun mounting seat (22) swingably arranged in the through slots (21); and a spray gun (23) is arranged on the spray gun mounting seat (22).

3. The all-round automatic spraying production line according to claim 2 is characterized in that: The transmission assembly comprises an extension seat (31) arranged at the rear side of the spray gun mounting seat (22), a slide groove (32) is arranged on the extension seat (31), a guide column (33) is arranged on the sliding rod (4), and the guide column (33) is arranged in the slide groove (32).

4. The all-round automatic spraying production line according to claim 1 is characterized in that: The swing drive device comprises a rotating shaft (41) fixedly arranged at the upper end of the swing crossbar (3), the rotating shaft (41) being rotatably arranged at the end of the crossbeam (2), and a first gear (42) being coaxially fixed on the rotating shaft (41), a cylinder (43) being arranged on the crossbeam (2), a pushing seat (44) being arranged on the piston rod of the cylinder (43), and a rack (45) being arranged on the pushing seat (44) and being able to mesh with the first gear (42).

5. The all-round automatic spraying production line according to claim 4 is characterized in that: The reciprocating drive assembly comprises a disc (51) arranged on the central fixed shaft (1), the lower end surface of the disc (51) is provided with an annular end surface wave groove (52), an annular seat (53) is coaxially arranged at the lower end of the disc (51), a circumferential wave groove (54) is arranged on the circumferential outer wall of the annular seat (53), a sphere (55) is arranged at the upper end of the sliding rod (4), when the swing cross bar (3) is in a vertical state, the sphere (55) abuts against the annular end surface wave groove (52), when the swing cross bar (3) is in a horizontal state, the sphere (55) abuts against the circumferential wave groove (54), a first spring (56) is also arranged at the lower end of the sliding rod (4), a limiting plate (57) is arranged at the lower end of the swing cross bar (3), and the lower end of the first spring (56) abuts against the limiting plate (57).

6. The all-round automatic spraying production line according to claim 5 is characterized in that: The disc (51) can move axially up and down along the central fixed axis (1), but cannot rotate circumferentially along the central fixed axis (1). An auxiliary switching component connected to a swing driving device is also provided on the crossbeam (2). When the swing driving device drives the swing crossbar (3) to swing, the disc (51) can be driven to move by the auxiliary switching component, thereby separating the annular end surface wave groove (52) or the circumferential wave groove (54) from the sphere (55).

7. The all-round automatic spraying production line according to claim 6, characterized in that: The auxiliary switching assembly includes a column support rod (71) arranged on the pushing seat (44), a convex ring (72) is arranged at the lower end of the disc (51) and on the inner side of the annular seat (53), and a guide inclined surface (73) is arranged on the outer edge of the convex ring (72). The column support rod (71) is arranged between the annular seat (53) and the guide inclined surface (73), and when the rack (45) drives the column support rod (71) to move, the upper end of the column support rod (71) can abut against the guide inclined surface (73), thereby driving the convex ring (72) and the disc (51) to move.

8. The all-round automatic spraying production line according to claim 7, characterized in that: A limiting ring (81) is arranged at the upper end of the central fixed shaft (1), and a second spring (82) is sleeved on the central fixed shaft (1), wherein the upper end of the second spring (82) abuts against the limiting ring (81) and the lower end abuts against the disc (51).

9. The all-round automatic spraying production line according to claim 1, characterized in that: A motor (91) is arranged on one side of the central fixed shaft (1), a second gear (92) is arranged on the output shaft of the motor (91), a gear ring (93) coaxially arranged with the central fixed shaft (1) is arranged on the crossbeam (2), and the second gear (92) meshes with the gear ring (93).

10. The all-round automatic spraying production line according to claim 1, characterized in that: A plurality of upper spray guns (10) are also arranged at the lower end of the crossbeam (2).

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