A horizontal spraying production line

Abstract

The invention discloses a horizontal spraying production line, including a spraying room, a drying room, and a spraying conveying device. The spraying conveying device includes a spraying frame, a spraying conveying chain, a clamping fixture, and two spraying conveying chains are arranged in parallel and spaced apart; the clamping fixture includes a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are respectively located on the two spraying conveying chains and are arranged oppositely, the first mounting seat is connected to the main shaft, a pressure block is set at one end of the main shaft, and a driving wheel is set at the other end; the second mounting seat is connected to the driven shaft, a dynamic pressure block is set at one end of the driven shaft, and the second mounting seat is provided with a reset spring and can drive the driven shaft to reset to a side close to the main shaft; the spraying conveying chain is provided with an upper material position and a lower material position, and the upper material position and the lower material position are both provided with a second driving device for pulling the driven shaft to slide; the spraying room is provided with a rotating driving device for driving the driving wheel to rotate. The invention can ensure uniform spraying of the workpiece, and has high working efficiency, and at the same time, the structure is simple.

Description

Technical Field

[0001] The invention relates to the technical field of spraying equipment, in particular to a horizontal spraying production line. Background Art

[0002] Many products need to be sprayed with a coating on their surface to improve their performance when in use. For example, the piston of the automobile air-conditioning compressor is coated with a layer of polytetrafluoroethylene wear-resistant material. This is because polytetrafluoroethylene has good wear resistance and density, which can reduce the clearance volume on the piston surface and make the piston have good air tightness, thereby improving the working efficiency and service life of the automobile air-conditioning compressor.

[0003] Large quantities of spraying operations are usually completed on a spraying production line. Currently, there is a spraying production line that includes a conveyor chain, a spraying room, a drying room, etc. The conveyor chain is connected to hanging fixtures that are spaced apart, and the workpiece to be sprayed is installed on the hanging fixture. The conveyor chain drives the workpiece to pass through the spraying room and the drying room in turn to complete the spraying and drying operations of the paint, and the spraying room and the drying room are also provided with a rotating drive device to drive the workpiece to rotate around its own vertical axis during spraying or drying. During the spraying process of this spraying production line, due to the influence of gravity, part of the paint will flow downward along the surface of the workpiece when it is just sprayed onto the surface of the workpiece, so that after the operation is completed, there will usually be a problem that the coating thickness is thicker at the part closer to the lower end of the workpiece.

[0004] In order to improve the above situation, some manufacturers have developed a horizontal spraying equipment; this horizontal spraying equipment is provided with multiple groups of clamping fixtures for horizontally clamping workpieces, each group of clamping fixtures includes a static clamping module and a dynamic clamping module for clamping the workpiece, the static clamping module includes a rotatable horizontally arranged main shaft, the dynamic clamping module includes a rotatable horizontally arranged driven shaft and a sliding drive device for driving the driven shaft close to or away from the main shaft; before spraying, the driven shaft is first driven to move to the side away from the main shaft, and then the workpiece is placed between the main shaft and the driven shaft, and then the driven shaft is driven close to the main shaft to clamp the workpiece, and finally the workpiece is driven to rotate by the main shaft to spray the workpiece comprehensively; this Because the workpiece rotates around the horizontal axis during spraying, the horizontal spraying equipment can effectively avoid the problem of uneven coating thickness caused by gravity; however, since each set of clamping fixtures of this horizontal spraying equipment needs to be equipped with an independent sliding drive device, its structure is often more complicated; and when this horizontal spraying equipment is used on a spraying production line, the workpiece must first be removed from the conveyor chain, and then the workpiece must be clamped on the clamping fixture in turn for spraying. After spraying is completed, the workpiece must be removed from the clamping fixture and then placed on the conveyor chain for transportation to the next process. The steps are relatively cumbersome, so the operating efficiency is often not high when using this horizontal spraying equipment. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides a horizontal spraying production line which can ensure uniform spraying of workpieces and has high working efficiency.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] A horizontal spraying production line comprises a spraying room, a drying room, and a spraying conveying device passing through the spraying room and the drying room, wherein the spraying conveying device comprises a spraying machine frame, a spraying conveying chain arranged on the spraying machine frame, a plurality of clamping jigs arranged on the spraying conveying chain, and a first driving device for driving the spraying conveying chain to move; the spraying conveying chains are provided with two parallel and spaced apart chains; the clamping jigs each comprise a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are respectively located on the two spraying conveying chains and are arranged opposite to each other, a horizontally arranged main shaft is rotatably connected to the first mounting seat, and a constant pressure is arranged at one end of the main shaft close to the second mounting seat block, and a driving wheel is arranged at the other end; a driven shaft is rotatably connected to the second mounting seat, the driven shaft is coaxially arranged with the main shaft, and the driven shaft can slide in the axial direction, and a dynamic pressure block is arranged at one end of the driven shaft facing the main shaft, and a return spring is arranged on the second mounting seat, and the return spring can drive the driven shaft to automatically return to the side close to the main shaft; an upper material position and a lower material position are respectively arranged at the positions adjacent to the head end and the tail end on the upper side of the spray conveying chain, and the upper material position and the lower material position are both provided with a second driving device for pulling the driven shaft to slide away from the side of the main shaft; a rotating driving device for driving the driving wheel to rotate is arranged in the spraying chamber.

[0008] As an improvement of the above technical solution, a dragging wheel is provided at the other end of the driven shaft, and an annular groove is provided on the wheel surface of the dragging wheel; the second driving device is connected to a bent dragging plate; when the spray conveying chain stops moving, the dragging wheel can stop at the position corresponding to the dragging plate, and the free end of the dragging plate extends into the annular groove, and the second driving device can drive the dragging plate to move to the side away from the main shaft.

[0009] Furthermore, the upper material position and the lower material position are both provided with a supporting mechanism for supporting the workpiece, the supporting mechanism is located between the two spray conveyor chains, and includes a V-shaped support plate and a third driving device; when the spray conveyor chain drives each clamping fixture to stop above the supporting mechanism, the third driving device can drive the V-shaped support plate to rise and reach between the fixed pressure block and the dynamic pressure block of the clamping fixture.

[0010] Furthermore, the loading position is also provided with a detection device for detecting whether the driven shaft is at a position closest to the main shaft.

[0011] Furthermore, it also includes a preheating chamber and a preheating conveying device passing through the preheating chamber. Along the flow direction of the workpiece, the preheating chamber and the preheating conveying device are located on the front side of the spray conveying device. The preheating conveying device includes a conveying frame, a preheating conveying chain arranged on the conveying frame, and a plurality of chain plates arranged on the preheating conveying chain. There are two preheating conveying chains that are parallel and spaced apart. The chain plates are perpendicular to the preheating conveying chains and both ends are respectively connected to the two preheating conveying chains. A V-shaped bracket is arranged on the side of the chain plate away from the preheating conveying chain.

[0012] Furthermore, it also includes a transport robot for transporting the workpiece at the end of the preheating conveying device to the spraying conveying device, the transport robot includes a sliding beam, a mobile slide slidably connected to the sliding beam, and a slide drive device that drives the mobile slide to move along the sliding beam; the mobile slide is provided with a grabbing assembly and a grabbing drive device that drives the grabbing assembly to move up and down.

[0013] Furthermore, the driving wheel adopts a sprocket, and a driving chain is provided in the spraying chamber. The driving chain is arranged above the spraying machine frame. When the driving wheel passes under the driving chain, the driving wheel can engage with the driving chain, and the rotating driving device drives the driving wheel by driving the driving chain to move.

[0014] Furthermore, a spraying device is provided in the spraying chamber, and the spraying device includes a cross beam located above the spray machine frame, a trolley slidably connected to the cross beam, and a trolley driving device that drives the trolley to slide back and forth on the cross beam. The cross beam is arranged parallel to the axial direction of the main shaft, and the trolley is connected to a connecting rod extending vertically downward, and the lower end of the connecting rod is connected to a spray head.

[0015] Furthermore, it also includes a heat curing chamber, wherein a hot air heating device is arranged inside the heat curing chamber.

[0016] Furthermore, the spraying room includes a first spraying room and a second spraying room, the drying room includes a first drying room and a second drying room, and the spraying conveying device carries the workpiece through the first spraying room, the first drying room, the second spraying room, the second drying room and the thermosetting room in sequence.

[0017] The beneficial effects of the present invention are as follows: the present invention provides two spraying conveyor chains and provides clamping fixtures on the two spraying conveyor chains, so that the workpiece to be sprayed is horizontally clamped and transported to the spraying room for horizontal spraying, and during the spraying process, the driving wheel is driven to rotate by the rotary driving device, thereby driving the main shaft, the driven shaft and the workpiece to rotate around the horizontal axis. Therefore, during the spraying process, the present invention can effectively avoid the coating from flowing down due to gravity operation, thereby improving the uniformity of the coating on the surface of the workpiece and improving the spraying quality; at the same time, since the clamping fixture is connected to the spraying conveyor chain, there is no need to remove the workpiece from the spraying conveyor chain during spraying. The workpiece can be clamped again at the bottom, so it can improve the spraying quality while ensuring high production efficiency; moreover, by setting the loading position and the unloading position at the positions adjacent to the upper head end and the tail end of the spray conveying device, and setting a second driving device for pulling the driven shaft to slide at the loading position and the unloading position, since the clamping fixture moves with the spray conveying chain, when each clamping fixture passes through the loading position or the unloading position, the workpiece can be automatically clamped or released by only two sets of second driving devices set at the loading position and the unloading position, without the need to set a set of independent driving devices on each clamping fixture. Therefore, the structure of the present invention is simpler, which is beneficial to reducing manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the spraying and conveying device described in the present invention;

[0021] Figure 3 It is a schematic diagram of the connection relationship between the clamping fixture, the material supporting mechanism, the second driving device and the detection device in the present invention;

[0022] Figure 4 It is a structural schematic diagram of the material supporting mechanism described in the present invention;

[0023] Figure 5 It is a structural schematic diagram of the preheating conveying device described in the present invention;

[0024] Figure 6 yes Figure 5 A is a partial enlarged view of the dotted circle area shown in FIG.

[0025] Figure 7 It is a schematic diagram of the connection relationship between the handling robot and the spraying conveying device and the preheating conveying device in the present invention.

[0026] Figure 8It is a schematic diagram of the connection structure between the driving chain and the clamping fixture in the spraying conveying device of the present invention;

[0027] Fig. 9 is a schematic diagram of the meshing structure between the driving chain and the driving wheel in the present invention;

[0028] Fig.10 It is a schematic diagram of the structure inside the spray chamber of the present invention;

[0029] Fig.11 It is a schematic diagram of the structure of the spraying device described in the present invention. DETAILED DESCRIPTION

[0030] Reference Figure 1 An embodiment of the present invention provides a horizontal spraying production line, including a spraying chamber 4, a drying chamber 5, and a spraying conveying device 3 passing through the spraying chamber 4 and the drying chamber 5.

[0031] Reference Figures 2 to 4 The spray conveying device 3 includes a spray machine frame 31, a spray conveying chain 32 arranged on the spray machine frame 31, a plurality of clamping fixtures 33 arranged on the spray conveying chain 32, and a first driving device (not shown in the drawings) that drives the spray conveying chain 32 to move; in this embodiment, preferably, the first driving device includes a first motor and a driving sprocket and a driven sprocket, and the spray conveying chain 32 is wound around the driving sprocket and the driven sprocket. The spraying conveying chains 32 are provided with two parallel and spaced apart arrangements; the clamping fixtures 33 each include a first mounting seat 331 and a second mounting seat 332, the first mounting seat 331 and the second mounting seat 332 are respectively located on the two spraying conveying chains 32 and are arranged opposite to each other, a horizontally arranged main shaft 333 is rotatably connected to the first mounting seat 331, a fixed pressure block 3331 is provided at one end of the main shaft 333 close to the second mounting seat 332, and a driving wheel 3332 is provided at the other end; a driven shaft 334 is rotatably connected to the second mounting seat 332, and the driven shaft 334 is rotatably connected to the second mounting seat 332. The shaft 334 is coaxially arranged with the main shaft 333, and the driven shaft 334 can slide in the axial direction. A dynamic pressure block 3341 is arranged at one end of the driven shaft 334 facing the main shaft 333, and a return spring (not shown in the drawings) is arranged on the second mounting seat 332. The return spring can drive the driven shaft 334 to automatically return to the side close to the main shaft 333; specifically, the return spring is sleeved on the driven shaft 334 and installed inside the second mounting seat 332, and one end of the return spring abuts against the driven shaft 334, and the other end abuts against the inner wall of the second mounting seat 332.

[0032] A loading position and a unloading position are respectively provided near the head end and the tail end of the spray conveyor chain 32, and both the loading position and the unloading position are provided with a second driving device 34 for pulling the driven shaft 334 to slide to a side away from the main shaft 333. A rotating driving device 42 for driving the driving wheel 3332 to rotate is provided in the spray chamber 4 and the drying chamber 5.

[0033] In this embodiment, preferably, both the fixed pressure block 3331 and the dynamic pressure block 3341 adopt a conical top; the workpiece 9 is fixed to the clamping fixture 33 by cooperating with the clamping positioning holes provided at both ends of the workpiece 9. Of course, according to actual conditions, in addition to the above-mentioned conical top, the fixed pressure block 3331 or the dynamic pressure block 3341 can also choose to adopt other structures such as automatic centering chucks. And, in this embodiment, specifically, rolling bearings are installed between the first mounting seat 331 and the main shaft 333, and between the second mounting seat 332 and the driven shaft 334, so as to reduce the friction during the rotation of the main shaft 333 and the driven shaft 334.

[0034] Reference Figure 3 In this embodiment, in order to facilitate the second driving device 34 to pull the driven shaft 334 away from the main shaft 333; specifically, the other end of the driven shaft 334 is provided with a drag wheel 3342, and the wheel surface of the drag wheel 3342 is provided with an annular groove; the second driving device 34 is connected with a bent drag plate 341; when the spray conveyor chain 32 stops moving, for the clamping fixture 33 located at the loading position, its drag wheel 3342 will stop at the position corresponding to the drag plate 341, and the free end of the drag plate 341 extends into the annular groove, and the second driving device 34 can drive the drag plate 341 to move to the side away from the main shaft 333. Through the above structure, not only can the second driving device 34 drive the driven shaft 334 to slide, but also it can avoid affecting the spray conveyor chain 32 to transport the workpiece 9 on the clamping fixture 33. Furthermore, in this embodiment, preferably, the second driving device 34 is a dragging cylinder disposed outside the spray conveying chain 32, and the dragging plate 341 is connected to the piston rod of the dragging cylinder. Of course, according to actual conditions, in addition to using a cylinder, the second driving device 34 can also use other types of driving structures such as a gear rack, a screw slider, etc.

[0035] Reference Figure 3 and Figure 4In this embodiment, in order to facilitate the loading and unloading of the spray conveying device 3; specifically, the loading and unloading positions are both provided with a supporting mechanism 35 for supporting the workpiece 9, and the supporting mechanism 35 is located between the two spray conveying chains 32, and includes a V-shaped support plate 352 and a third driving device 351; when the first driving device drives each clamping fixture 33 to dock above the supporting mechanism 35, the third driving device 351 can drive the V-shaped support plate 352 to rise and reach between the fixed pressure block 3331 and the dynamic pressure block 3341 of the clamping fixture 33. When the workpiece 9 from upstream enters the loading position, first the second drive device 34 drives the driven shaft 334 to move to the side away from the main shaft 333, and then the third drive device 351 drives the V-shaped support plate 352 corresponding to the loading position to rise between the static pressure block and the dynamic pressure block 3341, and then the workpiece 9 flowing from the upstream to the spraying conveying device 3 is first placed on the V-shaped support plate 352, and then the driven shaft 334 is reset close to the main shaft 333 under the drive of the reset spring, thereby clamping the workpiece 9 between the fixed pressure block 3331 and the dynamic pressure block 3341, and finally the third drive device 351 drives the V-shaped support plate 352 to move downward, thereby completing the clamping and loading. ; When the workpiece 9 completes the spraying and drying operations and flows to the end unloading position of the spray conveying device 3, the third driving device 351 will drive the V-shaped support plate 352 to move up to between the fixed pressure block 3331 and the dynamic pressure block 3341, and accommodate the workpiece 9, and then the second driving device 34 will drive the driven shaft 334 to slide to the side away from the main shaft 333, so that the dynamic pressure block 3341 and the fixed pressure block 3331 release the workpiece 9, and then the picking robot of other downstream processes will automatically take the workpiece 9 from the V-shaped support plate 352, and finally the third driving device 351 will drive the V-shaped support plate 352 to move down, and at the same time the reset spring drives the driven shaft 334 to reset.

[0036] In this embodiment, preferably, the third driving device 351 is a lifting cylinder. Of course, according to actual conditions, in addition to the above-mentioned lifting cylinder, other linear driving structures such as screw sliders, gear racks, etc. can also be selected in other embodiments.

[0037] In this embodiment, specifically, a synchronization rod 36 is further included which is arranged perpendicular to the spraying conveying chain 32, and the two ends of the synchronization rod 36 are respectively connected to the two spraying conveying chains 32. In addition, specifically, a plurality of synchronization rods 36 are provided, and the synchronization rods 36 are evenly spaced, and the clamping jigs 33 are all arranged at the intervals between the synchronization rods 36, so as to avoid interference between the V-shaped support plate 352 and the synchronization rod 36 during the upward movement.

[0038] Reference Figure 3In this embodiment, the loading position is also provided with a detection device 37 for detecting whether the driven shaft 334 is at the position closest to the main shaft 333, and the detection device 37 is electrically connected to the control system of the spraying production line; through the detection device 37, it can be indirectly detected whether the workpiece 9 is clamped between the main shaft 333 and the driven shaft 334; and, specifically, the detection device 37 is arranged on the spraying machine frame 31, and when the driven shaft 334 is at the position closest to the main shaft 33, the detection device 37 is located directly below the drag wheel 3342; when the V-shaped support plate 352 supports the workpiece 9 and lifts it upward to between the main shaft 333 and the driven shaft 334, the second driving device 34 drives the drag plate 341 to move to the side close to the main shaft 333, and at the same time, the driven shaft 334 and the drag wheel 334 are connected. The drag wheel 3342 will also move toward the main shaft 333 driven by the reset spring, and clamp the workpiece 9 between the main shaft 333 and the driven shaft 334; at this time, due to the limitation of the workpiece 9, the drag wheel 3342 will not be able to move completely to the position closest to the main shaft 333 with the movement of the driven shaft 334; but if the workpiece 9 is not clamped normally at this time, the drag wheel 3342 and the driven shaft 334 can be completely reset to the position closest to the main shaft 333, so that the detection device 37 can detect the presence of the drag wheel 3342 and send a signal to the control system of the spray production line, and then the control system will control the spray conveyor chain 32 not to transport the workpiece 9 backwards and control the upstream of the production line to no longer feed the spray conveyor device 3, and will also control the alarm system to send an alarm to inform the operator.

[0039] Reference Figure 1 , Figure 5 , Figure 6 In this embodiment, specifically, it also includes a preheating chamber 7 and a preheating conveying device 1 passing through the preheating chamber 7. Along the flow direction of the workpiece 9, the preheating chamber 7 and the preheating conveying device 1 are located in front of the spraying conveying device 3. The preheating conveying device 1 includes a conveying frame 11, a preheating conveying chain 12 arranged on the conveying frame 11, and a plurality of chain plates 13 arranged on the preheating conveying chain 12. The preheating conveying chain 12 has two parallel and spaced chains. The chain plates 13 are perpendicular to the preheating conveying chains 12 and the two ends are respectively connected to the two preheating conveying chains 12. The chain plates 13 are arranged on the side away from the preheating conveying chain 12 with a V-shaped bracket 14 for placing the workpiece 9. Specifically, the preheating conveying chain 12 is driven by a fourth driving device, and the fourth driving device is substantially the same as the first driving device; and, specifically, in order to improve the conveying efficiency, each conveying chain plate 13 is provided with two groups of V-shaped brackets 14 for conveying two workpieces 9 at the same time.

[0040] Reference Figure 7In this embodiment, a handling robot 2 is also included, and the handling robot 2 is used to carry the workpiece 9 at the end of the preheating conveying device 1 to the spraying conveying device 3; the handling robot 2 includes a slide beam 21, a mobile slide 22 slidably connected to the slide beam 21, and a slide drive device 23 driving the mobile slide 22 to move along the slide beam 21; the mobile slide 22 is provided with a grabbing component 24 and a grabbing drive device 25 driving the grabbing component 24 to move up and down; and in order to improve the grabbing efficiency, specifically, the grabbing component 24 is provided with two ... When the robot 2 is in operation, first the slide drive device 23 drives the mobile slide 22 to slide to the end of the preheating conveying device 1, and then the grabbing drive device 25 drives the two grabbing assemblies 24 to move downward to clamp the two workpieces 9 from the two V-shaped brackets 14 in the same row, and then drives the grabbing assembly 24 to move upward, and then the slide drive device 23 drives the mobile slide 22 to slide above the loading position of the spray conveying device 3, and then the grabbing drive device 25 and the slide drive device 23 cooperate to drive the grabbing assembly 24 to place the two workpieces 9 on the front and rear V-shaped support plates 352 one after another.

[0041] Reference Figure 8 , Fig. 9 In this embodiment, preferably, the driving wheel 3332 adopts a sprocket; of course, according to actual conditions, in some other embodiments, the driving wheel 3332 can also choose to adopt other types of driving wheels 3332 such as gears and pulleys; and in this embodiment, specifically, a driving chain 41 is provided in the spraying chamber 4 and the drying chamber 5, and the driving chain 41 is provided above the spraying machine frame 31. When the driving wheel 3332 passes under the driving chain 41, the driving wheel 3332 can be engaged with the driving chain 41, and the rotating driving device 42 drives the driving wheel 3332 by driving the driving chain 41 to move. By adopting the above structure, it is only necessary to set a set of rotating driving devices 42 in the spraying chamber 4 and the drying chamber 5, and there is no need to set a set of driving devices for each clamping fixture 33 to drive the main shaft 333 to rotate, which further simplifies the structure and reduces the cost. In this embodiment, specifically, the rotating driving device 42 is basically the same as the first driving device.

[0042] Reference Fig.10 , Fig.11, a spraying device 43 is arranged in the spraying chamber 4, and the spraying device 43 includes a crossbeam 431 located above the spraying machine frame 31, a trolley 432 slidably connected to the crossbeam 431, and a trolley driving device that drives the trolley 432 to slide back and forth on the crossbeam 431 is not shown in the accompanying drawings. The crossbeam 431 is arranged parallel to the axial direction of the main shaft 333, and the trolley 432 is connected to a connecting rod 433 extending vertically downward, and a nozzle 434 is connected to the lower end of the connecting rod 433. During the spraying process, the nozzle 434 slides under the drive of the trolley 432 while spraying, so that the workpiece 9 can be fully sprayed in the axial direction. And, specifically, there are two nozzles 434, which are respectively arranged on both sides of the trolley 432 to improve the spraying efficiency.

[0043] Reference Figure 1 , and further includes a thermosetting chamber 6, the spraying conveying device 3 drives the workpiece 9 after spraying and drying to pass through the thermosetting chamber 6, and the thermosetting chamber 6, the preheating chamber 7 and the drying chamber 5 are all provided with hot air heating devices (not shown in the drawings) for heating the workpiece 9. In this embodiment, preferably, the spraying chamber 4 and the drying chamber 5 are each provided with two groups, and the spraying chamber 4 and the drying chamber 5 are alternately arranged, the spraying chamber 4 includes a first spraying chamber 4 and a second spraying chamber 4, and the drying chamber 5 includes a first drying chamber 5 and a second drying chamber 5, and the spraying conveying device 3 carries the workpiece 9 through the first spraying chamber 4, the first drying chamber 5, the second spraying chamber 4, the second drying chamber 5 and the thermosetting chamber 6 in sequence, and the upper material position is located outside the first spraying chamber 4, and the lower material position is located outside the thermosetting chamber 6.

[0044] The basic working process of the horizontal spraying production line of the embodiment of the present invention is as follows:

[0045] First, the workpieces 9 are placed one by one in the V-shaped bracket 14 at the head end of the preheating conveying device 1, and then the preheating conveying chain 12 will drive the workpieces 9 through the preheating chamber 7 for preheating, and then the workpieces 9 are conveyed to the end of the preheating conveying device 1; then, the handling robot 2 transports the workpieces 9 from the V-shaped bracket 14 at the end of the preheating conveying device 1 to the loading position at the head end of the spray conveying device 3, and the workpieces 9 are clamped on the clamping fixture 33 in sequence through the coordinated cooperation of the supporting mechanism 35 and the clamping fixture 33; if an error occurs during the loading and clamping and the clamping is not successful, the control system will control the production line to stop the flow of the workpiece 9, and control the alarm system to sound an alarm. After the operator handles it, the control system will control the production line again to continue the mobile production operation, and control the handling robot 2, the supporting mechanism 35 and the clamping fixture 33 at the loading position to work together to re-clamp the new workpiece 9; then the spray conveying device 3 transports the workpiece 9 into the first spray chamber 4, and when the driving wheel 3332 begins to pass under the driving chain 41 inside it, the driving wheel 3 332 will mesh with the drive chain 41, and then the rotary drive device 42 will work and drive the drive wheel 3332 to rotate through the drive chain 41, thereby driving the main shaft 333, the driven shaft 334 and the workpiece 9 to rotate, and then the trolley drive device drives the nozzle 434 to spray the workpiece 9 back and forth along the axial direction of the main shaft 333; then the spray conveying device 3 conveys the workpiece 9 into the first drying chamber 5, and similarly, through the drive chain 41 and the rotary drive device 42 arranged in the chamber, the workpiece 9 is driven to rotate and dry by hot air; then similar to the above process, the spray conveying device 3 conveys the workpiece 9 into the second spray chamber 4 to complete the second spraying, and the second drying chamber 5 to complete the second drying; then, the spray conveying device 3 conveys the workpiece 9 into the thermosetting chamber 6 for thermosetting; after the thermosetting is completed, the workpiece 9 is transported to the end of the spray conveying device 3, and then the support mechanism 35 located at the unloading position cooperates with the corresponding clamping fixture 33 and the retrieval manipulator of other downstream processes to remove the workpiece 9 from the spray conveying device 3.

[0046] The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the above embodiments. As long as the technical effects of the present invention are achieved by any same or similar means, they should fall within the protection scope of the present invention.

Claims

1. A horizontal spraying production line, characterized in that: The invention comprises a spraying chamber (4), a drying chamber (5), and a spraying conveying device (3) passing through the spraying chamber (4) and the drying chamber (5), wherein the spraying conveying device (3) comprises a spraying machine frame (31), a spraying conveying chain (32) arranged on the spraying machine frame (31), a plurality of clamping jigs (33) arranged on the spraying conveying chain (32), and a first driving device for driving the spraying conveying chain (32) to move; the spraying conveying chains (32) are provided with two parallel and spaced apart chains; the clamping jigs (33) each comprise a first mounting seat (331) and a second mounting seat (332), the first mounting seat (331) and the second mounting seat (332) are respectively located on the two spraying conveying chains (32) and are arranged opposite to each other; a horizontally arranged main shaft (333) is rotatably connected to the first mounting seat (331), and a fixed pressure block (3331) is arranged at one end of the main shaft (333) close to the second mounting seat (332). , a driving wheel (3332) is arranged at the other end; a driven shaft (334) is rotatably connected to the second mounting seat (332), the driven shaft (334) is coaxially arranged with the main shaft (333), and the driven shaft (334) can slide in the axial direction, and a dynamic pressure block (3341) is arranged at one end of the driven shaft (334) facing the main shaft (333), and a return spring is arranged on the second mounting seat (332), and the return spring can drive the The driven shaft (334) automatically resets to a side close to the main shaft (333); a loading position and a loading position are respectively arranged near the head end and the tail end of the upper side of the spray conveyor chain (32); the loading position and the loading position are both provided with a second driving device (34) for pulling the driven shaft (334) to slide to a side away from the main shaft (333); a rotating driving device (42) for driving the driving wheel (3332) to rotate is arranged in the spray chamber (4); A drag wheel (3342) is provided at the other end of the driven shaft (334), and an annular groove is provided on the wheel surface of the drag wheel (3342); the second driving device (34) is connected to a bent drag plate (341); when the spraying conveying chain (32) stops moving, the drag wheel (3342) can be parked at a position corresponding to the drag plate (341), and the free end of the drag plate (341) extends into the annular groove, and the second driving device (34) can drive the drag plate (341) to move to a side away from the main shaft (333); The loading position is also provided with a detection device (37) for detecting whether the driven shaft (334) is at a position closest to the main shaft (333).

2. A horizontal spraying production line according to claim 1, characterized in that: The upper material position and the lower material position are both provided with a supporting mechanism (35) for supporting a workpiece (9); the supporting mechanism (35) is located between the two spray conveyor chains (32) and comprises a V-shaped supporting plate (352) and a third driving device (351); when the spray conveyor chain (32) drives each clamping fixture (33) to stop above the supporting mechanism (35), the third driving device (351) can drive the V-shaped supporting plate (352) to rise and reach between the fixed pressure block (3331) and the dynamic pressure block (3341) of the clamping fixture (33).

3. A horizontal spraying production line according to any one of claims 1-2, characterized in that: It also includes a preheating chamber (7) and a preheating conveying device (1) passing through the preheating chamber (7). Along the flow direction of the workpiece (9), the preheating chamber (7) and the preheating conveying device (1) are located in front of the spraying conveying device (3). The preheating conveying device (1) includes a conveying frame (11), a preheating conveying chain (12) arranged on the conveying frame (11), and a plurality of chain plates (13) arranged on the preheating conveying chain (12). The preheating conveying chain (12) has two parallel and spaced-apart chains. The chain plates (13) are perpendicular to the preheating conveying chains (12) and have two ends respectively connected to the two preheating conveying chains (12). A V-shaped bracket (14) is arranged on the side of the chain plate (13) facing away from the preheating conveying chain (12).

4. A horizontal spraying production line according to claim 3, characterized in that: It also includes a transport robot (2) for transporting a workpiece (9) at the end of the preheating conveying device (1) to the spraying conveying device (3), the transport robot (2) including a slide beam (21), a movable slide (22) slidably connected to the slide beam (21), and a slide drive device (23) for driving the movable slide (22) to move along the slide beam (21); the movable slide (22) is provided with a gripping component (24) and a gripping drive device (25) for driving the gripping component (24) to move up and down.

5. A horizontal spraying production line according to any one of claims 1-2, characterized in that: The driving wheel (3332) is a sprocket wheel. A driving chain (41) is provided in each of the spray chambers (4). The driving chain (41) is provided above the spray machine frame (31). When the driving wheel (3332) passes below the driving chain (41), the driving wheel (3332) can mesh with the driving chain (41). The rotating driving device (42) drives the driving wheel (3332) by driving the driving chain (41) to move.

6. A horizontal spraying production line according to any one of claims 1-2, characterized in that: A spraying device (43) is arranged in the spraying room (4), and the spraying device (43) comprises a crossbeam (431) located above the spraying machine frame (31), a trolley (432) slidably connected to the crossbeam (431), and a trolley driving device for driving the trolley (432) to slide back and forth on the crossbeam (431), wherein the crossbeam (431) is arranged parallel to the axial direction of the main shaft (333), and the trolley (432) is connected to a connecting rod (433) extending vertically downward, and the lower end of the connecting rod (433) is connected to a spray head (434).

7. A horizontal spraying production line according to any one of claims 1-2, characterized in that: It also includes a heat curing chamber (6), wherein a hot air heating device is arranged inside the heat curing chamber (6).

8. A horizontal spraying production line according to claim 7, characterized in that: The spraying chamber (4) comprises a first spraying chamber (4) and a second spraying chamber (4), the drying chamber (5) comprises a first drying chamber (5) and a second drying chamber (5), and the spraying conveying device (3) carries the workpiece (9) through the first spraying chamber (4), the first drying chamber (5), the second spraying chamber (4), the second drying chamber (5) and the thermosetting chamber (6) in sequence.

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