A workpiece coating and baking system capable of automatically loading and unloading materials

Abstract

The invention discloses a workpiece coating and baking system capable of automatic loading and unloading, comprising a loading and unloading mechanism, a workpiece conveying mechanism, a coating and baking mechanism, a workpiece loading conveyor and a workpiece unloading conveyor. The workpiece coating and baking system capable of automatic loading and unloading can realize the removal of workpieces from the workpiece conveying mechanism by using the loading and unloading mechanism, and the placement of workpieces to be baked on the workpiece conveying mechanism, thereby realizing the loading and unloading control of the workpieces; the workpiece conveying mechanism can realize the cyclic conveying of workpieces, so that the coating and baking mechanism and the loading and unloading mechanism form a flow-type operation; the workpiece loading conveyor and the workpiece unloading conveyor are respectively used to realize the conveyance of workpieces to be baked and the conveyance of workpieces that have been baked.

Description

Technical Field

[0001] The invention relates to a workpiece coating and baking system, in particular to a workpiece coating and baking system capable of automatically loading and unloading materials. Background Art

[0002] During the non-stick pan coating and baking process, it is necessary to remove the baked non-stick pan from the conveying mechanism and then place the non-stick pan to be baked on the conveying mechanism. The current method is to manually load and unload materials, which is not only inefficient, but also the high temperature and paint mist pollution on site make the working environment harsh and not suitable for manual processing. Therefore, it is necessary to design a workpiece coating and baking system that can automatically load and unload materials, which can realize automatic loading and unloading of workpieces and ensure production efficiency. Summary of the invention

[0003] Purpose of the invention: To provide a workpiece coating and baking system capable of automatic loading and unloading of workpieces, which can realize automatic loading and unloading of workpieces and ensure production efficiency.

[0004] Technical solution: The workpiece coating and baking system capable of automatic loading and unloading of the present invention comprises a loading and unloading mechanism, a workpiece conveying mechanism, a coating and baking mechanism, a workpiece loading conveyor and a workpiece unloading conveyor;

[0005] The workpiece conveying mechanism is a closed-loop conveying mechanism, which is used to cyclically convey the workpieces; the conveying line of the workpiece conveying mechanism runs through the coating and baking mechanism, and the coating and baking mechanism bakes the coating of the workpieces on the workpiece conveying mechanism; the loading and unloading mechanism is installed on the side of the workpiece conveying mechanism, which is used to remove the workpieces on the workpiece conveying mechanism and place the workpieces to be baked on the workpiece conveying mechanism; the workpiece loading conveyor and the workpiece unloading conveyor are respectively located at the loading station and unloading station of the loading and unloading mechanism, the workpiece loading conveyor is used to convey the workpieces to be baked to the loading and unloading mechanism, and the workpiece unloading conveyor is used to convey the workpieces taken down by the loading and unloading mechanism.

[0006] Furthermore, the loading and unloading mechanism includes a vertical column, a vertical rotating shaft, two swinging beams, a rotary drive motor, a rotary drive worm, a rotary drive worm wheel, a position detection sensor and two suspension claw structures; a mounting base is fixedly provided at the lower end of the vertical column, and the vertical rotating shaft is rotatably mounted on the upper end of the vertical column; the ends of the two swinging beams are vertically fixed on the upper end of the vertical rotating shaft, and the two swinging beams are perpendicular to each other; the rotary drive motor is fixedly mounted on the upper end side of the vertical column through a motor mounting plate, and the rotary drive worm is mounted on the motor mounting plate through a worm support; the output shaft of the rotary drive motor is relatively connected to the end of the rotary drive worm Installation; the rotating drive worm gear is fixedly installed on the vertical rotating shaft, and the rotating drive worm is meshed with the rotating drive worm gear; the position detection sensor is installed on the vertical column, which is used to detect the position of the workpiece transported on the workpiece conveying mechanism; the workpiece loading conveyor and the workpiece unloading conveyor are both composed of a workpiece conveyor belt and a conveyor belt bracket for supporting the workpiece conveyor belt; two hanging claw structures are respectively installed on the suspended ends of the two swinging beams, one is used to grab the workpiece transported on the workpiece conveying mechanism and transfer it to the workpiece conveyor belt of the workpiece unloading conveyor, and the other is used to grab the workpiece on the workpiece conveyor belt of the workpiece loading conveyor and transfer it to the workpiece conveying mechanism.

[0007] Furthermore, the suspension claw structure includes a lifting drive cylinder, a locking drive cylinder, two suspension rods, a lower rectangular mounting plate, a push-pull support rod, two synchronous push rods and four clamping rods; two guide sleeves are vertically installed at the end of the swing beam, and the two suspension rods are inserted into the two guide sleeves; a top support beam is fixedly installed between the upper ends of the two suspension rods; the lifting drive cylinder is vertically installed on the swing beam, and the piston rod end of the lifting drive cylinder is fixedly installed in the middle of the lower side surface of the top support beam; the lower rectangular mounting plate is horizontally fixedly installed on the lower ends of the two suspension rods; the locking drive cylinder is vertically fixedly installed at the center of the lower rectangular mounting plate, and the middle of the lower side surface of the push-pull support rod is fixedly installed. The upper end of the four clamping rods are respectively hingedly mounted on the four ends of the two synchronous push rods, and the two synchronous push rods are respectively parallel to the sides where the hinge grooves on the lower rectangular mounting plate are located; an oblique support rod is swing-hingedly mounted on both ends of the push-pull support rod, and the other ends of the two oblique support rods are swing-hingedly mounted on the middle parts of the two synchronous push rods; the height of the push-pull support rod is lower than the height of the synchronous push rod, so that when the push-pull support rod rises, the two synchronous push rods are pushed to both sides through the two oblique support rods.

[0008] Furthermore, a bending rod for approaching the bottom of the workpiece is provided at the lower end of each of the four clamping rods; a limit plate is horizontally provided between the two suspension rods, and a limit hole is provided in the middle of the limit plate, and the piston rod of the locking drive cylinder is slidably inserted in the limit hole.

[0009] Further, the workpiece conveying mechanism includes a closed-loop track, a closed-loop chain, at least three chain tensioning units, a chain driving unit, and various mobile support units;

[0010] The closed-loop track is installed horizontally through the track support column, and a track support plate is arranged at the lower end of the track support column; roller limiting grooves are arranged on the upper side, lower side and outer ring side of the closed-loop track;

[0011] The movable support unit comprises a C-shaped plate, a vertical adjusting column, a locking nut and a vertical adjusting screw; two supporting rollers are rotatably installed on the upper inner wall, the lower inner wall and the vertical inner wall of the C-shaped plate; the C-shaped plate is buckled on the closed-loop track by the side, and the wheel surface of the supporting roller is partially embedded in the roller limiting groove on the corresponding side; the vertical adjusting column is vertically installed on the upper side surface of the C-shaped plate, and a triangular rib plate is provided at the installation position; an adjusting threaded hole is vertically provided at the upper end of the vertical adjusting column; the lower end thread of the vertical adjusting screw is screwed and installed in the adjusting threaded hole; the locking nut is screwed and installed on the vertical adjusting screw, and the lower side of the locking nut is close to the upper end surface of the vertical adjusting column; a supporting disc is horizontally arranged at the upper end of the vertical adjusting screw, and a workpiece support rod extending radially is arranged on the circumferential edge of the supporting disc, and the end of the workpiece support rod is arc-shaped upward, and the support disc and each workpiece support rod constitute a tray structure of the workpiece;

[0012] The closed-loop chain is driven and supported by a chain drive unit and at least three chain tensioning units and is installed in a ring of the closed-loop track;

[0013] The C-shaped plates of each mobile supporting unit are connected to the closed-loop chain at intervals through each connecting unit.

[0014] Furthermore, the connecting unit includes a connecting rod, a connecting pin, two strip clamping plates and a clamping bolt; one end of the connecting rod is swingably hingedly mounted on the C-shaped plate through a connecting hinge seat, and the connecting pin is vertically through-fixedly mounted on the other end of the connecting rod; pin holes are provided at the ends of the two strip clamping plates, and are mounted on the two ends of the connecting pin through the pin holes; limiting convex rings are provided at the upper and lower ends of the connecting pin; two limiting protrusions are provided on the opposite sides of the two strip clamping plates; a pulling hole is provided on the two strip clamping plates and close to the pin hole, the screw end of the clamping bolt passes through the two pulling holes, and a clamping nut is threadedly installed on the through end; the two strip clamping plates are used to clamp on the closed-loop chain, and the upper side edge of the clamping part of the closed-loop chain is located between the two upper limiting protrusions, and the lower side edge of the clamping part of the closed-loop chain is located between the two lower limiting protrusions.

[0015] The cam is an axially-guided gear of the present invention, and a tensioning gear shaft is connected to the camshaft to form a tensioning gear. The camshaft is connected to the camshaft through-hole and the camshaft is connected to the tensioning gear shaft. The camshaft is connected to the camshaft through-hole and the camshaft is connected to the tensioning gear shaft.

[0016] The chain drive unit includes a chain drive gear, a drive mounting column, a chain drive motor, a strip mounting seat, a motor tensioning bolt and a motor mounting sliding seat; the lower end of the drive mounting column is vertically fixedly mounted on the drive mounting base plate, and the strip mounting seat is horizontally fixedly mounted on the upper end of the drive mounting column; a sliding guide cavity is horizontally arranged in the strip mounting seat; a motor sliding guide hole connected to the sliding guide cavity is arranged on the vertical side surface of the strip mounting seat along its length direction; the motor mounting sliding seat is slidingly mounted in the sliding guide cavity; the chain drive motor is vertically mounted on the side of the motor mounting sliding seat through the motor sliding guide hole through the motor connecting block; the chain drive gear is fixedly mounted on the upper end of the output shaft of the chain drive motor; the screw end of the motor tensioning bolt is threadedly screwed on the end face of the strip mounting seat, and the end of the motor tensioning bolt extending into the sliding guide cavity is rotatably mounted on the motor mounting sliding seat;

[0017] The closed-loop chain is meshed with the chain drive gear and each tensioning gear at the same time, and the chain drive gear and each tensioning gear are both located within the loop of the closed-loop chain.

[0018] Further, the coating baking mechanism includes a hot air box, an air filter, a top strip air box, two side air outlet boxes, two inlet and outlet sealing mechanisms, and a rectangular baking shell;

[0019] The hot air box is installed on the outer top of the baking shell, and the air filter is installed at the air inlet above the hot air box; the top strip air box is longitudinally suspended on the inner top of the baking shell through the side suspension rod, and the upper air inlet of the top strip air box is connected to the air outlet on the lower side of the hot air box through the air inlet duct; an air inlet cover is installed on the air inlet above the air filter; a return air duct is set through the top of the baking shell; the return air duct and the air inlet cover are connected through the return air duct; two side air outlet boxes are respectively arranged on the left and right sides of the baking shell; the top strip air box is connected to the two side air outlet boxes through the internal duct The air inlet of the baking shell is connected; hot air outlets are longitudinally arranged on the upper and lower sides of the relatively inner sides of the two side air outlet boxes; inlet and outlet windows are arranged on the front and rear sides of the baking shell; the workpiece conveying mechanism passes through the baking shell through the front and rear inlet and outlet windows; two inlet and outlet sealing mechanisms are respectively installed on the outer sides of the front and rear inlet and outlet windows, and are used to close the left and right side gaps of the workpiece conveying mechanism at the inlet and outlet windows from the left and right sides; wind guide mechanisms are installed on the two side air outlet boxes, which are used to guide the hot air flows of the upper and lower hot air outlets to the workpiece conveying mechanism; and a thermal insulation layer is coated on the outer wall of the baking shell.

[0020] Furthermore, the wind deflector mechanism includes an upper wind shield plate, a lower wind shield plate and two angle adjustment units installed on the front and rear sides of the side air outlet box; the angle adjustment unit includes an upper pull rod, a lower pull rod, a pull rod, a pull rod locking compression spring and a push-pull sliding block; a pull-pull sliding groove is horizontally arranged on the front and rear side end faces of the side air outlet box; the push-pull sliding blocks of the two angle adjustment units are respectively slidably installed on the pull-pull sliding grooves on the front and rear sides; an upper swing rod is arranged on the front and rear sides of the upper wind shield plate, and a lower swing rod is arranged on the front and rear sides of the lower wind shield plate Side swing rod; the lower ends of the two upper swing rods are swing-hinged and installed at the upper sides of the front and rear end surfaces of the side air outlet box; the lower ends of the two lower swing rods are swing-hinged and installed at the lower sides of the front and rear end surfaces of the side air outlet box; the height of the pull-out sliding groove is located between the lower hinge point of the upper swing rod and the lower hinge point of the lower swing rod; the upper ends of the upper pull rods of the two angle adjustment units are swing-hinged and installed at the middle of the two upper swing rods, and the lower ends are swing-hinged and installed on the two push-pull sliding blocks; the lower ends of the lower pull rods of the two angle adjustment units are swing-hinged and installed at the middle of the two upper swing rods, and the lower ends are swing-hinged and installed on the two push-pull sliding blocks; the lower ends of the lower pull rods of the two angle adjustment units are swing-hinged and installed at the lower sides of the two push-pull sliding blocks; The two angle adjustment units are installed in the middle of the two lower swing rods, and the upper ends are respectively swing-hinged and installed on the two push-pull sliding blocks; the upper and lower hot air outlets of the side air outlet box are located between the upper wind shield and the lower wind shield; one end of the pull-out rod of the two angle adjustment units is respectively rotatably installed on the two push-pull sliding blocks, and the other end penetrates and extends out of the baking shell; the pull-out rod is parallel to the pull-out sliding groove, and a push-pull handle is provided on the extended end of the pull-out rod; a strip installation groove is provided on the lower side of the pull-out rod along its length direction, and a limited position rack is installed in the strip installation groove; A locking seat is installed above the penetration position of the pull-out rod through the side mounting plate; a vertical locking rod is installed vertically through the locking seat; a compression spring limit retaining ring is provided at the upper end of the vertical locking rod, the pull rod locking compression spring is sleeved on the vertical locking rod, and the upper and lower ends of the pull rod locking compression spring are elastically supported between the compression spring limit retaining ring and the locking seat respectively; a locking hole is provided at the lower end of the vertical locking rod, and locking teeth are provided on the lower hole wall of the locking hole; the pull rod passes through the locking hole, and the locking teeth are buckled on the limit rack to lock the insertion depth of the pull rod.

[0021] Furthermore, the inlet and outlet closing mechanism includes two side closing units; the side closing unit includes a vertical strip plate, each transverse strip plate and each position locking bolt; the vertical strip plates of the two side closing units are respectively vertically installed on the left and right outer walls of the inlet and outlet windows, and strip plate insertion holes are provided on the left and right side surfaces of the vertical strip plates; each transverse strip plate is inserted into the strip plate insertion hole side by side for partial closure of the inlet and outlet windows; each position locking bolt is threadedly installed on the vertical strip plate, and the end of the screw is pressed on each transverse strip plate respectively; a supporting slide groove is transversely provided on the insulation layer and at each transverse strip plate; an insertion handle rod is vertically penetrated and installed on each transverse strip plate, and the end of the insertion handle rod is slidably embedded in the supporting slide groove at the corresponding position.

[0022] Compared with the prior art, the invention has the following beneficial effects: the loading and unloading mechanism can be used to remove the workpiece from the workpiece conveying mechanism, and the workpiece to be baked can be placed on the workpiece conveying mechanism, thereby realizing the loading and unloading control of the workpiece; the workpiece conveying mechanism can be used to realize the cyclic conveying of the workpiece, so that the coating and baking mechanism and the loading and unloading mechanism form a flow-line operation; the workpiece loading conveyor and the workpiece unloading conveyor are used to respectively realize the conveyance of the workpiece to be baked and the conveyance of the baked workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the system layout structure created by the present invention;

[0024] Figure 2 This is a schematic diagram of the loading and unloading mechanism structure created by the present invention;

[0025] Figure 3 A schematic diagram of the partial structure of the workpiece conveying mechanism created by the present invention;

[0026] Figure 4 A schematic diagram of the installation structure of the mobile support unit created by the present invention;

[0027] Figure 5 A schematic diagram of the internal structure of a baking shell partially cut away from the present invention;

[0028] Figure 6 A schematic diagram of the local structure of the installation location of the wind guide mechanism created by the present invention;

[0029] Figure 7 The figure is a partial structural diagram of the installation location of the inlet and outlet sealing mechanism created by the present invention. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the protection scope of the present invention is not limited to the embodiments.

[0031] Embodiment 1:

[0032] like Figure 1-7 As shown, the workpiece coating and baking system capable of automatic loading and unloading disclosed in the invention comprises: a loading and unloading mechanism 1, a workpiece conveying mechanism 2, a coating and baking mechanism 3, a workpiece loading conveyor 5 and a workpiece unloading conveyor 6;

[0033] The workpiece conveying mechanism 2 is a closed-loop conveying mechanism, which is used to cyclically convey the workpiece 4; the conveying line of the workpiece conveying mechanism 2 runs through the coating and baking mechanism 3, and the coating and baking mechanism 3 bakes the coating of the workpiece 4 on the workpiece conveying mechanism 2; the loading and unloading mechanism 1 is installed on the side of the workpiece conveying mechanism 2, which is used to remove the workpiece 4 on the workpiece conveying mechanism 2 and place the workpiece 4 to be baked on the workpiece conveying mechanism 2; the workpiece loading conveyor 5 and the workpiece unloading conveyor 6 are respectively located at the loading station and the unloading station of the loading and unloading mechanism 1, the workpiece loading conveyor 5 is used to convey the workpiece 4 to be baked to the loading and unloading mechanism 1, and the workpiece unloading conveyor 6 is used to convey the workpiece 4 removed by the loading and unloading mechanism 1.

[0034] The loading and unloading mechanism 1 can be used to remove the workpiece 4 on the workpiece conveying mechanism 2 and place the workpiece 4 to be baked on the workpiece conveying mechanism 2, thereby realizing the loading and unloading control of the workpiece 4; the workpiece conveying mechanism 2 can be used to realize the cyclic conveying of the workpiece 4, so that the coating and baking mechanism 3 and the loading and unloading mechanism 1 form a flow-line operation; the workpiece loading conveyor 5 and the workpiece unloading conveyor 6 are used to respectively realize the conveyance of the workpiece 4 to be baked and the conveyance of the baked workpiece 4.

[0035] Furthermore, the loading and unloading mechanism 1 includes a vertical column 101, a vertical rotating shaft 103, two swinging beams 104, a rotary drive motor 106, a rotary drive worm 109, a rotary drive worm wheel 107, a position detection sensor 123 and two suspension claw structures; a mounting base plate 102 is fixedly provided at the lower end of the vertical column 101, and the vertical rotating shaft 103 is rotatably mounted on the upper end of the vertical column 101; the ends of the two swinging beams 104 are vertically fixed on the upper end of the vertical rotating shaft 103, and the two swinging beams 104 are perpendicular to each other; the rotary drive motor 106 is fixedly mounted on the upper end side of the vertical column 101 through a motor mounting plate 105, and the rotary drive worm 109 is mounted on the motor mounting plate 105 through a worm support 108; the output shaft of the rotary drive motor 106 is connected to the rotary drive worm The ends of the rod 109 are installed in butt connection with each other; the rotary drive worm gear 107 is fixedly installed on the vertical rotating shaft 103, and the rotary drive worm 109 is meshed with the rotary drive worm gear 107; the position detection sensor 123 is installed on the vertical column 101, and is used to detect the position of the workpiece 4 transported on the workpiece conveying mechanism 2; the workpiece loading conveyor 5 and the workpiece unloading conveyor 6 are both composed of a workpiece conveyor belt 110 and a conveyor belt bracket 122 for supporting the workpiece conveyor belt 110; two suspension claw structures are respectively installed on the suspended ends of the two swinging beams 104, one is used to grab and transfer the workpiece 4 transported on the workpiece conveying mechanism 2 to the workpiece conveyor belt 110 of the workpiece unloading conveyor 6, and the other is used to grab and transfer the workpiece 4 on the workpiece conveyor belt 110 of the workpiece loading conveyor 5 to the workpiece conveying mechanism 2. By using two mutually perpendicular swing beams 104, the positions of the two suspension claw structures can be switched when the vertical shaft 103 rotates; by using a rotary drive motor 106, a rotary drive worm 109 and a rotary drive worm gear 107 to form a rotary drive structure, the rotation of the vertical shaft 103 can be controlled, and the rotation angle of the vertical shaft 103 can be limited when it stops.

[0036] Furthermore, the suspension claw structure includes a lifting drive cylinder 112, a locking drive cylinder 116, two suspension rods 114, a lower rectangular mounting plate 120, a push-pull support rod 118, two synchronous push rods 115 and four clamping rods 119; two guide sleeves 113 are vertically installed at the end of the swing beam 104, and the two suspension rods 114 are inserted into the two guide sleeves 113; a top support beam 111 is fixedly installed between the upper ends of the two suspension rods 114; the lifting drive cylinder 112 is vertically installed on the swing beam 104, and the piston rod end of the lifting drive cylinder 112 is fixedly installed on the middle part of the lower side surface of the top support beam 111; the lower rectangular mounting plate 120 is horizontally fixedly installed on the lower ends of the two suspension rods 114; the locking drive cylinder 116 is vertically fixedly installed at the center of the lower rectangular mounting plate 120, and the push-pull support rod 118 is The middle part of the lower side surface of the rod 118 is fixedly mounted on the piston rod end of the locking drive cylinder 116; two hinged slots are provided on a set of parallel sides of the lower rectangular mounting plate 120, and the middle parts of the four clamping rods 119 are swing-hingedly mounted on the four hinged slots respectively; the upper ends of the four clamping rods 119 are respectively hingedly mounted on the four ends of the two synchronous push rods 115, and the two synchronous push rods 115 are respectively parallel to the sides where the hinged slots are located on the lower rectangular mounting plate 120; an oblique support rod 124 is swing-hingedly mounted at both ends of the push-pull support rod 118, and the other ends of the two oblique support rods 124 are swing-hingedly mounted on the middle parts of the two synchronous push rods 115; the height of the push-pull support rod 118 is lower than the height of the synchronous push rod 115, so that when the push-pull support rod 118 rises, the two synchronous push rods 115 are pushed to both sides through the two oblique support rods 124. The lifting and lowering control of the lower mechanism can be achieved by using the lifting drive cylinder 112, two suspension rods 114, two guide sleeves 113 and the top support beam 111; the claw hand structure is composed of the lower rectangular mounting plate 120, the locking drive cylinder 116, the push-pull support rod 118, the two diagonal support rods 124, the two synchronous push rods 115 and the four clamping rods 119. When the piston rod of the locking drive cylinder 116 rises, the distance between the two synchronous push rods 115 is pushed to increase, so that the lower ends of the four clamping rods 119 swing toward the middle to clamp and grasp the workpiece 4; when the piston rod of the locking drive cylinder 116 descends, the distance between the two synchronous push rods 115 is pulled to decrease, so that the lower ends of the four clamping rods 119 swing outward to release the workpiece 4.

[0037] Furthermore, a bending rod 121 is provided at the lower end of each of the four clamping rods 119 for being close to the bottom of the workpiece 4; a limit plate 117 is horizontally provided between the two suspension rods 114, and a limit hole is provided in the middle of the limit plate 117, and the piston rod of the locking drive cylinder 116 is slidably inserted in the limit hole. The bending rod 121 can prevent the grasped workpiece 4 from falling; the limit hole provided on the limit plate 117 can limit the piston rod of the locking drive cylinder 116 to prevent the piston rod from shaking and bending during use.

[0038] Further, the workpiece conveying mechanism 2 includes a closed-loop track 201, a closed-loop chain 230, at least three chain tensioning units, a chain driving unit, and various mobile support units;

[0039] The closed-loop track 201 is installed horizontally through the track support column 202, and a track support plate 212 is provided at the lower end of the track support column 202; roller limiting grooves 211 are provided on the upper side, lower side and outer ring side of the closed-loop track 201;

[0040] The mobile support unit includes a C-shaped plate 203, a vertical adjustment column 204, a locking nut 207 and a vertical adjustment screw 205; two support rollers 210 are rotatably installed on the upper inner wall, the lower inner wall and the vertical inner wall of the C-shaped plate 203; the C-shaped plate 203 is buckled on the closed-loop track 201 from the side, and the wheel surface of the support roller 210 is partially embedded in the roller limiting groove 211 on the corresponding side; the vertical adjustment column 204 is vertically installed on the upper side of the C-shaped plate 203, and a triangular rib plate 206 is arranged at the installation position; a vertical rib plate 206 is arranged at the upper end of the vertical adjustment column 204 There is an adjustment threaded hole; the lower end of the vertical adjustment screw 205 is threadedly screwed and installed in the adjustment threaded hole; the locking nut 207 is threadedly screwed and installed on the vertical adjustment screw 205, and the lower side of the locking nut 207 is close to the upper end surface of the vertical adjustment column 204; a support disc 208 is horizontally arranged at the upper end of the vertical adjustment screw 205, and a workpiece support rod 209 extending radially is arranged on the circumferential edge of the support disc 208, and the end of the workpiece support rod 209 is tilted upward in an arc shape, and the support disc 208 and each workpiece support rod 209 constitute a tray structure of the workpiece 4;

[0041] The closed-loop chain 230 is driven and supported by a chain driving unit and at least three chain tensioning units and installed in the ring of the closed-loop track 201; the C-shaped plates 203 of each mobile support unit are connected to the closed-loop chain 230 at intervals through each connection unit. The mobile support unit can be movably installed on the closed-loop track 201 by using the support rollers 210 on the three inner sides of the C-shaped plate 203 and the roller limiting grooves 211 on the closed-loop track 201; the support height of the tray structure can be adjusted by using the adjustment threaded hole, the locking nut 207 and the vertical adjustment screw 205, so as to meet the use of workpieces 4 of various heights; the tray structure composed of the support disc 208 and the workpiece support rod 209 can reduce the obstruction of the hot air flow, so that the workpiece 4 is fully heated.

[0042] Furthermore, the connecting unit includes a connecting rod 214, a connecting pin 215, two strip-shaped clamping plates 217 and a clamping bolt 218; one end of the connecting rod 214 is swingably hingedly mounted on the C-shaped plate 203 through a connecting hinge seat 213, and the connecting pin 215 is vertically through-type fixedly mounted on the other end of the connecting rod 214; pin holes are provided at the ends of the two strip-shaped clamping plates 217, and are mounted on the two ends of the connecting pin 215 through the pin holes; limiting convex rings 216 are provided at the upper and lower ends of the connecting pin 215; Two limiting protrusions 219 are provided on the opposite sides of the strip clamping plate 217; a pulling hole is provided on the two strip clamping plates 217 and close to the pin hole, the screw end of the clamping bolt 218 passes through the two pulling holes, and a clamping nut 220 is threadedly installed on the passing end; the two strip clamping plates 217 are used to clamp on the closed-loop chain 230, and the upper side edge of the clamping part of the closed-loop chain 230 is located between the two upper limiting protrusions 219, and the lower side edge of the clamping part of the closed-loop chain 230 is located between the two lower limiting protrusions 219. The connection between the closed-loop chain 230 and the mobile support unit can be achieved by using the connecting unit, so that the mobile support unit can be driven to slide along the closed-loop track 201 when the closed-loop chain 230 circulates; the end of the connecting rod 214 can be clamped and installed on the closed-loop chain 230 by using the connecting pin 215, two strip clamping plates 217 and the clamping bolt 218; the limiting protrusion 219 can achieve limiting and anti-slip properties between the two strip clamping plates 217 and the closed-loop chain 230.

[0043] Furthermore, the chain tensioning unit includes a tensioning gear 228, a tensioning mounting column 220, a strip tensioning seat 222, a tensioning adjustment bolt 223 and a tensioning support compression spring 225; the lower end of the tensioning mounting column 220 is vertically fixedly mounted on the tensioning mounting plate 221; the strip tensioning seat 222 is horizontally mounted on the upper end of the tensioning mounting column 220; a tensioning sliding cavity 229 is horizontally arranged in the strip tensioning seat 222, and a tensioning guide strip hole 231 connected to the tensioning sliding cavity 229 is arranged on the upper side surface of the strip tensioning seat 222 along its length direction; A tensioning sliding block 226 is slidably installed in 229, and a tensioning gear shaft 227 extending out of the tensioning guide strip hole 231 is vertically arranged on the tensioning sliding block 226; a tensioning gear 228 is rotatably installed on the upper end of the tensioning gear shaft 227; the screw end of the tensioning adjustment bolt 223 is threadedly screwed on the end surface of the strip tensioning seat 222, and a compression spring support plate 224 is rotatably installed on the end of the tensioning adjustment bolt 223 extending into the tensioning sliding cavity 229; a tensioning support compression spring 225 is elastically supported between the compression spring support plate 224 and the tensioning sliding block 226;

[0044] The chain drive unit includes a chain drive gear 241, a drive mounting column 232, a chain drive motor 240, a strip mounting seat 235, a motor tensioning bolt 236 and a motor mounting sliding seat 239; the lower end of the drive mounting column 232 is vertically fixedly mounted on the drive mounting base plate 234, and the strip mounting seat 235 is horizontally fixedly mounted on the upper end of the drive mounting column 232; a sliding guide cavity 237 is horizontally arranged in the strip mounting seat 235; a motor sliding guide connected to the sliding guide cavity 237 is arranged on the vertical side surface of the strip mounting seat 235 along its length direction. The guide hole 238; the motor mounting sliding seat 239 is slidably mounted in the sliding guide cavity 237; the chain drive motor 240 is vertically mounted on the side of the motor mounting sliding seat 239 through the motor connecting block and the motor sliding guide hole 238; the chain drive gear 241 is fixedly mounted on the upper end of the output shaft of the chain drive motor 240; the screw end of the motor tensioning bolt 236 is threadedly mounted on the end surface of the strip mounting seat 235, and the end of the motor tensioning bolt 236 extending into the sliding guide cavity 237 is rotatably mounted on the motor mounting sliding seat 239;

[0045] The closed-loop chain 230 is meshed with the chain drive gear 241 and each tensioning gear 228 at the same time, and the chain drive gear 241 and each tensioning gear 228 are both located in the loop of the closed-loop chain 230. The closed-loop chain 230 can be tightened and driven by the chain drive unit and each chain tensioning unit; the strip tensioning seat 222 can be elastically pushed by the tensioning support compression spring 225, so that the tensioning gear 228 elastically tensions the closed-loop chain 230; the position of the chain drive gear 241 can be adjusted by the motor tensioning bolt 236, so as to adjust the tension of the closed-loop chain 230.

[0046] Furthermore, the coating baking mechanism 3 includes a hot air box 303, an air filter 304, a top strip air box 310, two side air outlet boxes 312, two inlet and outlet sealing mechanisms, and a rectangular baking shell 301;

[0047] The hot air box 303 is installed on the outer top of the baking shell 301, and the air filter 304 is installed at the air inlet above the hot air box 303; the top strip air box 310 is longitudinally suspended on the inner top of the baking shell 301 through the side suspension rod 308, and the upper air inlet of the top strip air box 310 is docked and installed on the air outlet on the lower side of the hot air box 303 through the air inlet duct 309; an air inlet cover 305 is installed on the air inlet above the air filter 304; a return air duct 307 is set through the top of the baking shell 301; the return air duct 307 and the air inlet cover 305 are connected through the return air duct 306; two side air outlet boxes 312 are respectively set on the left and right sides of the baking shell 301; the top strip air box 310 is connected to the air outlet on the lower side of the hot air box 303 through the internal duct 31 1 are respectively connected with the air inlets of the two side air outlet boxes 312; hot air outlets 323 are longitudinally arranged on the upper and lower sides of the relatively inner sides of the two side air outlet boxes 312; inlet and outlet windows 313 are arranged on the front and rear sides of the baking shell 301; the workpiece conveying mechanism 2 passes through the baking shell 301 through the front and rear inlet and outlet windows 313; two inlet and outlet sealing mechanisms are respectively installed on the outer sides of the front and rear inlet and outlet windows 313, and are used to close the left and right side gaps of the workpiece conveying mechanism 2 at the inlet and outlet windows 313 from the left and right sides; wind guide mechanisms are installed on the two side air outlet boxes 312, and are used to guide the hot air flows of the upper and lower hot air outlets 323 to the workpiece conveying mechanism 2; and the outer wall of the baking shell 301 is covered with a heat preservation layer 302. By arranging two side air outlet boxes 312 on the left and right sides, the comprehensiveness of baking of the workpiece 4 can be enhanced; by using the air filter 304, debris can be prevented from being sucked into the hot air box 303, thereby preventing the debris from contaminating the surface coating of the workpiece 4.

[0048] Furthermore, the wind deflector mechanism includes an upper wind shield plate 322, a lower wind shield plate 320 and two angle adjustment units installed on the front and rear sides of the side air outlet box 312; the angle adjustment unit includes an upper pull rod 317, a lower pull rod 318, a pull rod 325, a pull rod locking spring 330 and a push-pull sliding block 316; a pull-pull sliding groove 315 is horizontally arranged on the front and rear side end faces of the side air outlet box 312; the push-pull sliding blocks 316 of the two angle adjustment units are respectively slidably installed on the pull-pull sliding grooves 315 on the front and rear sides; an upper swing rod 321 is arranged on the front and rear sides of the upper wind shield plate 322, and a push-pull sliding block 321 is arranged on the front and rear sides of the lower wind shield plate 320 The lower ends of the two upper swing rods 321 are respectively swing-hinged and installed at the upper sides of the front and rear end surfaces of the side air outlet box 312; the lower ends of the two lower swing rods 319 are respectively swing-hinged and installed at the lower sides of the front and rear end surfaces of the side air outlet box 312; the height of the pull-out sliding groove 315 is located between the lower end hinge point of the upper swing rod 321 and the lower end hinge point of the lower swing rod 319; the upper ends of the upper pull rods 317 of the two angle adjustment units are respectively swing-hinged and installed in the middle of the two upper swing rods 321, and the lower ends are respectively swing-hinged and installed on the two push-pull sliding blocks 316; the lower ends of the lower pull rods 318 of the two angle adjustment units are respectively swing-hinged and installed on the two lower The middle part of the side swing rod 319 and the upper end are respectively swing-hinged and installed on the two push-pull sliding blocks 316; the upper and lower hot air outlets 323 of the side air outlet box 312 are located between the upper wind shield plate 322 and the lower wind shield plate 320; one end of the pull-out rod 325 of the two angle adjustment units is respectively rotatably installed on the two push-pull sliding blocks 316, and the other end passes through and extends out of the baking shell 301; the pull-out rod 325 is parallel to the pull-out sliding groove 315, and a push-pull handle 326 is provided on the extended end of the pull-out rod 325; a strip mounting groove is provided on the lower side of the pull-out rod 325 along its length direction, and a limited position rack 328 is installed in the strip mounting groove; A locking seat 329 is installed above the penetration position of 25 through the side mounting plate 324; a vertical locking rod 327 is vertically penetrated and installed on the locking seat 329; a compression spring limit retaining ring 331 is provided at the upper end of the vertical locking rod 327, a pull rod locking compression spring 330 is sleeved on the vertical locking rod 327, and the upper and lower ends of the pull rod locking compression spring 330 are elastically supported between the compression spring limit retaining ring 331 and the locking seat 329 respectively; a locking hole is provided at the lower end of the vertical locking rod 327, and locking teeth are provided on the lower side hole wall of the locking hole; the pulling rod 325 passes through the locking hole, and the locking teeth are buckled on the limit rack 328, which is used to lock the insertion depth of the pulling rod 325.The upper wind shield plate 322 and the lower wind shield plate 320 can be used to guide the hot air flow from the upper and lower hot air outlets 323, so that the hot air flows to converge at the workpiece 4 at the middle position, thereby making the workpiece 4 have a better baking effect; the upper swing rod 321, the upper pull rod 317, the push-pull sliding block 316 and the pull-out rod 325 can be used to adjust the inclination angle of the upper wind shield plate 322, and the lower swing rod 319, the lower pull rod 318, the push-pull sliding block 316 and the pull-out rod 325 can be used to adjust the inclination angle of the lower wind shield plate 320; the pull-out position of the pull-out rod 325 is locked by the limit rack 328, the pull rod locking spring 330, the vertical locking rod 327 and the locking teeth.

[0049] Furthermore, the inlet and outlet sealing mechanism includes two side sealing units; the side sealing units include a vertical strip plate 333, each transverse strip plate 314 and each position locking bolt 335; the vertical strip plates 333 of the two side sealing units are respectively installed vertically on the left and right outer walls of the inlet and outlet window 313, and strip plate insertion holes 334 are provided through the left and right side surfaces of the vertical strip plates 333; each transverse strip plate 314 is inserted into the strip plate insertion holes 334 side by side, and is used to lock the inlet and outlet windows 313; The entrance and exit window 313 is partially closed; each position locking bolt 335 is threadedly installed on the vertical strip plate 333, and the end of the screw is pressed on each horizontal strip plate 314 respectively; a support slide groove 332 is horizontally arranged on the insulation layer 302 and at each horizontal strip plate 314; an inserted handle rod 336 is vertically installed through each horizontal strip plate 314, and the end of the inserted handle rod 336 is slidably embedded in the support slide groove 332 at the corresponding position. By using each transverse strip plate 314 to be inserted from the left and right sides of the entry and exit window 313 to the middle, the insertion length can be adjusted according to the structure of the penetration point of the workpiece conveying mechanism 2 and the structure of the workpiece 4, so that the entry and exit window 313 has a better sealing effect; the position locking bolt 335 can be used to press and position the position of the transverse strip plate 314; the cooperation of the insertion handle rod 336 and the support slide groove 332 can realize the end support of the transverse strip plate 314, and it is also convenient to manually pull and adjust the insertion length.

[0050] In the workpiece coating and baking system that can automatically load and unload materials disclosed in the invention, the position detection sensor 123 adopts an existing position sensor, such as an infrared position sensor, to detect whether the mobile support unit is in place; the rotation drive motor 106 and the chain drive motor 240 both adopt existing stepping motors to realize forward and reverse rotation drive; the locking drive cylinder 116 and the lifting drive cylinder 112 are both connected to the matching pneumatic system to realize the extension and retraction control of the piston rod; when in use, the position detection sensor 123, the rotation drive motor 106, the chain drive motor 240 and the pneumatic system are all electrically connected to the electric control cabinet, and coordinated control is realized by the electric control cabinet.

[0051] When the workpiece coating and baking system capable of automatic loading and unloading disclosed in the invention is used, the chain driving unit drives the closed-loop chain 230 to work in a cycle, and pulls each mobile support unit to slide along the closed-loop track 201 through each connecting unit; when the position detection sensor 123 detects that the mobile support unit moves to the loading and unloading station, the chain driving unit stops driving, and the hanging claw structure for unloading grabs the baked workpiece 4 on the mobile support unit, and at the same time, the hanging claw structure for loading grabs the workpiece 4 to be baked on the workpiece loading conveyor 5, and then the vertical rotating shaft 103 is driven to rotate by the rotating driving motor 106, and the two swinging crossbeams 104 are driven to rotate. It swings horizontally, and the suspension claw structure for unloading moves to above the workpiece conveyor belt 110 of the workpiece unloading conveyor 6, and at the same time, the suspension claw structure for loading moves to above the mobile support unit, and the two suspension claw structures are controlled to be released, so that the baked workpiece 4 is placed on the workpiece conveyor belt 110 of the workpiece unloading conveyor 6, and the workpiece 4 to be baked is placed on the tray structure of the mobile support unit; then the chain drive unit starts to continue to drive the closed-loop chain 230 to work in a cycle; the mobile support unit transports each workpiece 4 to be baked through the coating and baking mechanism 3, and the coating and baking mechanism 3 bakes the coating of each workpiece 4 to be baked.

[0052] As mentioned above, although the invention has been shown and described with reference to a specific preferred embodiment, it should not be interpreted as limiting the invention itself. Various changes may be made to it in form and detail without departing from the spirit and scope of the invention defined in the appended claims.

Claims

1. A workpiece coating and baking system capable of automatic loading and unloading, characterized in that: It comprises a loading and unloading mechanism (1), a workpiece conveying mechanism (2), a coating and baking mechanism (3), a workpiece loading conveyor (5) and a workpiece unloading conveyor (6); The workpiece conveying mechanism (2) is a closed-loop conveying mechanism for cyclically conveying workpieces (4); the conveying line of the workpiece conveying mechanism (2) passes through the coating and baking mechanism (3), and the coating and baking mechanism (3) bakes the coating of the workpiece (4) on the workpiece conveying mechanism (2); the loading and unloading mechanism (1) is installed on the side of the workpiece conveying mechanism (2), and is used to remove the workpiece (4) on the workpiece conveying mechanism (2) and place the workpiece (4) to be baked on the workpiece conveying mechanism (2); the workpiece loading conveyor (5) and the workpiece unloading conveyor (6) are respectively located at the loading station and the unloading station of the loading and unloading mechanism (1), the workpiece loading conveyor (5) is used to convey the workpiece (4) to be baked to the loading and unloading mechanism (1), and the workpiece unloading conveyor (6) is used to convey the workpiece (4) removed by the loading and unloading mechanism (1); The loading and unloading mechanism (1) comprises a vertical column (101), a vertical rotating shaft (103), two swinging cross beams (104), a rotary drive motor (106), a rotary drive worm (109), a rotary drive worm wheel (107), a position detection sensor (123) and two suspended claw structures; a mounting base plate (102) is fixedly provided at the lower end of the vertical column (101), and the vertical rotating shaft (103) is rotatably mounted on the upper end of the vertical column (101); The ends of the two swing beams (104) are vertically fixed to the upper end of the vertical shaft (103), and the two swing beams (104) are perpendicular to each other; the rotation drive motor (106) is fixedly mounted on the upper side of the vertical column (101) through the motor mounting plate (105), and the rotation drive worm (109) is mounted on the motor mounting plate (105) through the worm support (108); the output shaft of the rotation drive motor (106) is connected to the rotation drive worm (109) 09) are installed in contact with each other at the ends of the two swing beams (104); a rotating drive worm wheel (107) is fixedly installed on the vertical rotating shaft (103), and the rotating drive worm (109) is meshed with the rotating drive worm wheel (107); a position detection sensor (123) is installed on the vertical column (101) for detecting the position of the workpiece (4) transported on the workpiece conveying mechanism (2); the workpiece loading conveyor (5) and the workpiece unloading conveyor (6) are both composed of a workpiece conveyor belt (110) and a conveyor belt bracket (122) for supporting the workpiece conveyor belt (110); two suspension claw structures are respectively installed on the suspended ends of the two swing beams (104), one for grabbing and transferring the workpiece (4) transported on the workpiece conveying mechanism (2) to the workpiece conveyor belt (110) of the workpiece unloading conveyor (6), and the other for grabbing and transferring the workpiece (4) on the workpiece conveyor belt (110) of the workpiece loading conveyor (5) to the workpiece conveyor mechanism (2); The workpiece conveying mechanism (2) comprises a closed-loop track (201), a closed-loop chain (230), at least three chain tensioning units, a chain driving unit, and various movable support units; The closed-loop track (201) is installed horizontally via a track support column (202), and a track support plate (212) is provided at the lower end of the track support column (202); roller limiting grooves (211) are provided on the upper side, lower side and outer ring side of the closed-loop track (201); The mobile support unit comprises a C-shaped plate (203), a vertical adjustment column (204), a locking nut (207) and a vertical adjustment screw (205); two support rollers (210) are rotatably mounted on the upper inner wall, the lower inner wall and the vertical inner wall of the C-shaped plate (203); the C-shaped plate (203) is buckled on the closed-loop track (201) from the side, and the wheel surface of the support roller (210) is partially embedded in the roller limiting groove (211) on the corresponding side; the vertical adjustment column (204) is vertically mounted on the upper side of the C-shaped plate (203), and a triangular rib plate (206) is arranged at the installation position; a vertical support plate (206) is arranged at the upper end of the vertical adjustment column (204); An adjusting threaded hole is provided; the lower end of the vertical adjusting screw (205) is threadedly screwed and installed in the adjusting threaded hole; the locking nut (207) is threadedly screwed and installed on the vertical adjusting screw (205), and the lower side of the locking nut (207) is closely attached to the upper end surface of the vertical adjusting column (204); a supporting disc (208) is horizontally arranged at the upper end of the vertical adjusting screw (205), and a workpiece supporting rod (209) extending radially is arranged on the circumferential edge of the supporting disc (208), and the end of the workpiece supporting rod (209) is tilted upward in an arc shape, and the supporting disc (208) and each workpiece supporting rod (209) constitute a tray structure for the workpiece (4); The closed-loop chain (230) is driven and supported by a chain driving unit and at least three chain tensioning units and is installed in a ring of the closed-loop track (201); The C-shaped plates (203) of the respective mobile support units are connected to the closed-loop chain (230) at intervals through respective connection units; The coating baking mechanism (3) comprises a hot air box (303), an air filter (304), a top strip air box (310), two side air outlet boxes (312), two inlet and outlet sealing mechanisms, and a rectangular baking shell (301); The hot air box (303) is installed on the outer top of the baking shell (301), and the air filter (304) is installed at the air inlet above the hot air box (303); the top strip air box (310) is longitudinally suspended on the inner top of the baking shell (301) through the side suspension rod (308), and the upper air inlet of the top strip air box (310) is docked and installed on the air outlet on the lower side of the hot air box (303) through the air inlet duct (309); an air inlet cover (305) is installed on the air inlet above the air filter (304); a return air duct (307) is provided through the top of the baking shell (301); the return air duct (307) and the air inlet cover (305) are connected through the return air duct (306); two side air outlet boxes (312) are respectively arranged on the left and right sides of the baking shell (301); the top strip air box (310) is connected to the air outlet of the bottom side of the baking shell (301) through the internal duct (309); The duct (311) is respectively connected to the air inlet of the two side air outlet boxes (312); hot air outlets (323) are longitudinally arranged on the upper and lower sides of the relatively inner sides of the two side air outlet boxes (312); inlet and outlet windows (313) are arranged on the front and rear side surfaces of the baking shell (301); the workpiece conveying mechanism (2) passes through the baking shell (301) through the front and rear inlet and outlet windows (313); two inlet and outlet sealing mechanisms are respectively installed on the outer side surfaces at the front and rear inlet and outlet windows (313) and are used to seal the left and right side gaps of the workpiece conveying mechanism (2) at the inlet and outlet windows (313) from the left and right sides; wind guide mechanisms are installed on the two side air outlet boxes (312) and are used to guide the hot air flow of the upper and lower hot air outlets (323) to the workpiece conveying mechanism (2); and a heat insulation layer (302) is coated on the outer wall of the baking shell (301).

2. The workpiece coating and baking system capable of automatic loading and unloading according to claim 1 is characterized in that: The suspension claw structure comprises a lifting drive cylinder (112), a locking drive cylinder (116), two suspension rods (114), a lower rectangular mounting plate (120), a push-pull support rod (118), two synchronous push rods (115) and four clamping rods (119); two guide sleeves (113) are vertically installed through the end of the swing beam (104), and the two suspension rods (114) are inserted through the two guide sleeves (113); 4) is fixedly mounted between the upper ends of the top support beam (111); the lifting drive cylinder (112) is vertically mounted on the swing beam (104), and the piston rod end of the lifting drive cylinder (112) is fixedly mounted on the middle part of the lower side of the top support beam (111); the lower rectangular mounting plate (120) is horizontally fixedly mounted on the lower ends of the two suspension rods (114); the locking drive cylinder (116) is vertically fixedly mounted at the center of the lower rectangular mounting plate (120), and the push-pull support The middle part of the lower side surface of the support rod (118) is fixedly mounted on the piston rod end of the locking drive cylinder (116); two hinged notches are provided on a set of parallel side edges of the lower rectangular mounting plate (120), and the middle parts of the four clamping rods (119) are respectively hingedly mounted on the four hinged notches; the upper ends of the four clamping rods (119) are respectively hingedly mounted on the four ends of the two synchronous push rods (115), and the two synchronous push rods (115) are respectively connected to the lower rectangular mounting plate (1 20) are parallel to the sides where the upper hinge grooves are located; an oblique support rod (124) is swing-hingedly installed at both ends of the push-pull support rod (118), and the other ends of the two oblique support rods (124) are swing-hingedly installed at the middle of the two synchronous push rods (115); the height of the push-pull support rod (118) is lower than the height of the synchronous push rod (115), so that when the push-pull support rod (118) rises, it pushes the two synchronous push rods (115) to both sides through the two oblique support rods (124).

3. The workpiece coating and baking system capable of automatic loading and unloading according to claim 2 is characterized in that: A bending rod (121) is provided at the lower end of each of the four clamping rods (119) for being close to the bottom of the workpiece (4); a limit plate (117) is horizontally provided between the two suspension rods (114), and a limit hole is provided in the middle of the limit plate (117), and a piston rod of the locking drive cylinder (116) is slidably inserted into the limit hole.

4. The workpiece coating and baking system capable of automatic loading and unloading according to claim 1 is characterized in that: The connecting unit comprises a connecting rod (214), a connecting pin (215), two strip-shaped clamping plates (217) and a clamping bolt (218); one end of the connecting rod (214) is swingably hingedly mounted on the C-shaped plate (203) via a connecting hinge seat (213), and the connecting pin (215) is vertically through-mounted and fixedly mounted on the other end of the connecting rod (214); pin holes are arranged at the ends of the two strip-shaped clamping plates (217), and the two strip-shaped clamping plates are mounted on the two ends of the connecting pin (215) via the pin holes; limiting convex rings (216) are arranged at the upper and lower ends of the connecting pin (215); Two limiting protrusions (219) are arranged on opposite sides of the two strip-shaped clamping plates (217); a tension hole is arranged on the two strip-shaped clamping plates (217) near the pin hole, the screw ends of the clamping bolts (218) pass through the two tension holes, and a clamping nut is threadedly installed on the through-end; the two strip-shaped clamping plates (217) are used to clamp on the closed-loop chain (230), and the upper side edge of the clamping part of the closed-loop chain (230) is located between the two upper limiting protrusions (219), and the lower side edge of the clamping part of the closed-loop chain (230) is located between the two lower limiting protrusions (219).

5. The workpiece coating and baking system capable of automatic loading and unloading according to claim 1 is characterized in that: The chain tensioning unit comprises a tensioning gear (228), a tensioning mounting column (220), a strip tensioning seat (222), a tensioning adjustment bolt (223) and a tensioning support compression spring (225); the lower end of the tensioning mounting column (220) is vertically fixedly mounted on a tensioning mounting plate (221); the strip tensioning seat (222) is horizontally mounted on the upper end of the tensioning mounting column (220); a tensioning sliding cavity (229) is horizontally arranged in the strip tensioning seat (222); a tensioning guide strip hole (231) connected to the tensioning sliding cavity (229) is arranged on the upper side surface of the strip tensioning seat (222) along its length direction; 9) A tensioning sliding block (226) is slidably installed inside, and a tensioning gear shaft (227) extending out of the tensioning guide strip hole (231) is vertically arranged on the tensioning sliding block (226); the tensioning gear (228) is rotatably installed on the upper end of the tensioning gear shaft (227); the screw end of the tensioning adjustment bolt (223) is threadedly installed on the end surface of the strip tensioning seat (222), and a compression spring support plate (224) is rotatably installed on the end of the tensioning adjustment bolt (223) extending into the tensioning sliding cavity (229); the tensioning support compression spring (225) is elastically supported between the compression spring support plate (224) and the tensioning sliding block (226); The chain drive unit comprises a chain drive gear (241), a drive mounting column (232), a chain drive motor (240), a strip mounting seat (235), a motor tensioning bolt (236), and a motor mounting sliding seat (239); the lower end of the drive mounting column (232) is vertically fixedly mounted on the drive mounting bottom plate (234), and the strip mounting seat (235) is horizontally fixedly mounted on the upper end of the drive mounting column (232); a sliding guide cavity (237) is horizontally arranged in the strip mounting seat (235); and a motor sliding member connected to the sliding guide cavity (237) is arranged on the vertical side surface of the strip mounting seat (235) along its length direction. The motor mounting sliding seat (239) is slidably mounted in the sliding guide cavity (237); the chain drive motor (240) passes through the motor sliding guide hole (238) through the motor connecting block and is vertically mounted on the side of the motor mounting sliding seat (239); the chain drive gear (241) is fixedly mounted on the upper end of the output shaft of the chain drive motor (240); the screw end of the motor tensioning bolt (236) is threadedly mounted on the end surface of the strip mounting seat (235), and the end of the motor tensioning bolt (236) extending into the sliding guide cavity (237) is rotatably mounted on the motor mounting sliding seat (239); The closed-loop chain (230) is meshed with the chain drive gear (241) and each tensioning gear (228) at the same time, and the chain drive gear (241) and each tensioning gear (228) are both located within the loop of the closed-loop chain (230).

6. The workpiece coating and baking system capable of automatic loading and unloading according to claim 1 is characterized in that: The wind deflection mechanism comprises an upper wind shield (322), a lower wind shield (320) and two angle adjustment units installed on the front and rear sides of the side air outlet box (312); the angle adjustment unit comprises an upper pull rod (317), a lower pull rod (318), a pull rod (325), a pull rod locking compression spring (330) and a push-pull sliding block (316); a pull-pull sliding groove (315) is transversely arranged on the front and rear side end surfaces of the side air outlet box (312); the push-pull sliding blocks (316) of the two angle adjustment units are respectively slidably installed on the pull-pull sliding grooves (315) on the front and rear sides; an upper swing rod (321) is arranged on the front and rear sides of the upper wind shield (322), and a push-pull sliding block (316) is arranged on the lower wind shield (320) A lower swing rod (319) is provided on each of the front and rear sides; the lower ends of the two upper swing rods (321) are respectively swing-hinged and installed at the upper sides of the front and rear end surfaces of the side air outlet box (312); the lower ends of the two lower swing rods (319) are respectively swing-hinged and installed at the lower sides of the front and rear end surfaces of the side air outlet box (312); the height of the pull-out sliding groove (315) is located between the lower end hinge point of the upper swing rod (321) and the lower end hinge point of the lower swing rod (319); the upper ends of the upper pull rods (317) of the two angle adjustment units are respectively swing-hinged and installed at the middle parts of the two upper swing rods (321), and the lower ends are respectively swing-hinged and installed on the two push-pull sliding blocks (316); the lower pull rods of the two angle adjustment units The lower ends of the two angle adjustment units (318) are respectively swing-hinged and mounted on the middle of the two lower swing rods (319), and the upper ends are respectively swing-hinged and mounted on the two push-pull sliding blocks (316); the upper and lower hot air outlets (323) of the side air outlet box (312) are located between the upper wind shield (322) and the lower wind shield (320); one end of the pull-out rods (325) of the two angle adjustment units is respectively rotatably mounted on the two push-pull sliding blocks (316), and the other ends are both extended out of the baking shell (301); the pull-out rod (325) is parallel to the pull-out sliding groove (315), and a push-pull handle (326) is provided on the extended end of the pull-out rod (325); the lower side edge of the pull-out rod (325) is provided with a push-pull handle (326) along its length. A strip-shaped mounting groove is provided in the strip-shaped mounting groove, and a limited rack (328) is installed in the strip-shaped mounting groove; a locking seat (329) is installed above the penetration position of the pull rod (325) through the side mounting plate (324); a vertical locking rod (327) is vertically penetrated and installed on the locking seat (329); a compression spring limiting retaining ring (331) is provided at the upper end of the vertical locking rod (327), a pull rod locking compression spring (330) is sleeved on the vertical locking rod (327), and the upper and lower ends of the pull rod locking compression spring (330) are elastically supported between the compression spring limiting retaining ring (331) and the locking seat (329); a locking hole is provided at the lower end of the vertical locking rod (327), and locking teeth are provided on the lower hole wall of the locking hole;The pull rod (325) passes through the locking hole, and the locking teeth are buckled on the limiting rack (328) to lock the insertion depth of the pull rod (325). ; 7. The workpiece coating and baking system capable of automatic loading and unloading according to claim 1 is characterized in that: The inlet and outlet sealing mechanism comprises two side sealing units; the side sealing units comprise a vertical strip plate (333), each transverse strip plate (314) and each position locking bolt (335); the vertical strip plates (333) of the two side sealing units are respectively vertically mounted on the left and right outer walls of the inlet and outlet window (313), and strip plate insertion holes (334) are provided through the left and right side surfaces of the vertical strip plates (333); each transverse strip plate (314) is inserted side by side in the strip plate insertion holes (334) for locking the inlet and outlet window ( The vertical strip plates (313) are partially sealed; each locking bolt (335) is threadedly installed on the vertical strip plates (333), and the ends of the screws are pressed on each horizontal strip plate (314) respectively; a support slide groove (332) is transversely arranged on the insulation layer (302) and at each horizontal strip plate (314); and an insertion handle rod (336) is vertically penetrated and installed on each horizontal strip plate (314), and the end of the insertion handle rod (336) is slidably embedded in the support slide groove (332) at the corresponding position.

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