Automatic circulating paint spraying and drying device for large steel members

Abstract

The invention discloses an automatic circulating paint spraying and drying device for large steel members, and relates to the technical field of steel member paint spraying, the automatic circulating paint spraying and drying device comprises a paint spraying room and a placing rack, the outlet end of the paint spraying room is provided with a drying room, and the inner side of the paint spraying room is provided with a paint spraying robot, a first chain conveyor, a lifting mechanism and a paint spraying mechanism; the two ends of the steel member are clamped and lifted upwards through the lifting mechanism, so that the phenomenon that the main surface of the steel member cannot be sprayed due to physical shielding is avoided, and the overall spraying effect is improved; after a paint film on a main face is dried, paint spraying and drying treatment on the end portion of the steel component can be completed only through the small paint spraying mechanism, the steel component does not need to occupy a paint spraying room again, other steel components with multiple faces capable of being synchronously sprayed enter the inner side of the paint spraying room in time, the utilization rate of the paint spraying room is greatly improved, and the overall paint spraying efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel member paint spraying, in particular to a large steel member automatic circulation paint spraying and drying device. BACKGROUND

[0002] Steel member is a structure composed of steel material, and is one of the main building structure types. Steel members or parts are usually connected by welding, bolts or rivets. Because the self-weight is light and the construction is simple, the steel member is widely used in large workshops, venues, super high-rise buildings and other fields. In order to prolong the service life of the steel member, paint spraying operation needs to be performed on the surface of the steel member. The paint spraying operation is mainly performed in a paint spraying room by using a paint spraying robot or manual paint spraying.

[0003] When the steel member is painted in the paint spraying room, the steel member needs to be placed on a placing rack, and then the surface of the steel member is painted. Currently, there are mainly two paint spraying methods: 1) The surface of the steel member that does not contact the placing rack is first painted, and then the steel member is transferred to the paint spraying room again after the paint on the surface of the steel member is dried. The remaining surface of the steel member is then painted. This paint spraying method causes the steel member to still occupy the space of the paint spraying room when only the remaining surface of the steel member is painted, so that other steel members that can be synchronously painted on multiple surfaces cannot enter the inside of the paint spraying room in time, greatly reducing the utilization rate of the paint spraying room and reducing the overall paint spraying efficiency. 2) The entire surface of the steel member is directly painted. This paint spraying method causes the surface of the steel member that contacts the placing rack to be unable to be painted due to physical shielding, resulting in local missed painting and affecting the overall paint spraying effect. Therefore, a large steel member automatic circulation paint spraying and drying device is proposed to solve the above problems. SUMMARY

[0004] The present application aims to provide a large steel member automatic circulation paint spraying and drying device to solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted by the present application is as follows: A large steel member automatic circulation paint spraying and drying device, comprising a paint spraying room and a placing rack, wherein the outlet end of the paint spraying room is provided with a drying room, the inside of the paint spraying room is provided with a paint spraying robot and a first chain conveyor, the outlet end of the drying room is provided with a rack, the inside of the drying room and one side of the rack are both provided with a second chain conveyor, both ends of the placing rack are provided with a lifting mechanism, the inside of the lifting mechanism clamps a steel member, and one end of the rack is provided with a paint spraying mechanism.

[0006] Preferably, the lifting mechanism includes a side plate slidably connected to the placement frame, a support beam slidably connected to the inner side of the side plate, a clamping shell fixedly connected to one end of the support beam, and the clamping shell clamping together with the end of the support beam, a support seat fixedly connected to both ends of the support beam, a roller rotatably connected to the inner side of the support seat, a support rail fixedly connected to the side plate at the bottom of the roller, a side push assembly fixedly connected to the other end of the support beam, a limit assembly at one end of the side plate, and a slot formed on the surface of the side plate.

[0007] Preferably, the side-pushing assembly includes a fixed plate fixedly connected to the support beam, a first spring fixedly connected to one end of the fixed plate, a slider fixedly connected to the other end of the first spring, and the slider being slidably connected to the side plate. A fixed seat is fixedly connected to the top of the support beam, and a first guide wheel is rotatably connected to one end of the fixed seat. The first guide wheel is rotatably connected to the support beam.

[0008] Preferably, the side-push assembly further includes a first electric push rod fixedly connected to the frame, and the movable part of the first electric push rod is fixedly connected to a wedge plate adapted to the first guide wheel.

[0009] Preferably, the limiting component includes a fixed shell fixedly connected to the placement frame, a pull rod slidably connected to the inner side of the fixed shell, a wedge block fixedly connected to the other end of the pull rod, a locking plate slidably connected to the other end of the wedge block, the locking plate being adapted to a locking groove, a guide shaft fixedly connected to the top of the fixed shell, a guide plate slidably connected to the outer side of the guide shaft, and the guide plate being fixedly connected to a side plate, a buffer rod fixedly connected to one end of the guide plate, a base plate fixedly connected to the bottom end of the buffer rod, and the base plate being fixedly connected to the placement frame, and a second spring sleeved on the outer side of the pull rod.

[0010] Preferably, the limiting component further includes a second electric push rod fixedly connected to the frame, the movable part of the second electric push rod being fixedly connected to a connecting seat, and the inner side of the connecting seat being rotatably connected to a second guide wheel adapted to the wedge block.

[0011] Preferably, the painting mechanism includes a third electric push rod fixedly connected to the frame, a painting chamber fixedly connected to the movable part of the third electric push rod, a fifth electric push rod fixedly connected to the top of the painting chamber, a movable plate slidably connected to the painting chamber fixedly connected to the movable part of the fifth electric push rod, a clamping frame fixedly connected to the bottom end of the movable plate, and the clamping frame is adapted to the steel component, a support frame fixedly connected to the top of the painting chamber, a fourth electric push rod fixedly connected to the top of the support frame, an isolation chamber fixedly connected to the movable part of the fourth electric push rod, and a painting robot arm fixedly connected to the inner side of the isolation chamber.

[0012] Preferably, one end of the movable plate and the clamping frame is fixedly connected to a first isolation pad that is fixedly connected to the spray booth, and the top of the spray booth is fixedly connected to a second isolation pad that is fixedly connected to the movable plate.

[0013] Preferably, a transition frame is fixedly connected to the inner side of the spray booth, a first motor is fixedly connected to one end of the spray booth, a heating plate and a partition are fixedly connected to the end of the main shaft of the first motor, and the heating plate and the partition are rotatably connected to the transition frame.

[0014] Preferably, an air blowing shell is fixedly connected to the inner side of the spray booth, a second air inlet pipe is fixedly connected to one end of the air blowing shell, a transfer chamber adapted to the isolation chamber is connected to the top of the spray booth, a first exhaust pipe is fixedly connected to one end of the transfer chamber, a first air inlet pipe is fixedly connected to one end of the isolation chamber, and a second exhaust pipe is fixedly connected to the bottom of the spray booth.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. An automatic circulating spray painting and drying device for large steel components, comprising a lifting mechanism and a spray painting mechanism. The lifting mechanism clamps and lifts both ends of the steel component, preventing the main surface of the steel component from being unable to be painted due to physical obstruction, thus improving the overall painting effect. After the paint film on the main surface dries, the ends of the steel component can be painted and dried by a small spray painting mechanism, eliminating the need for the steel component to occupy the spray booth again. This allows other steel components that can be painted simultaneously on multiple sides to enter the spray booth in a timely manner, significantly improving the utilization rate of the spray booth and increasing the overall painting efficiency.

[0016] 2. An automatic circulating spray painting and drying device for large steel components, equipped with a spray painting mechanism. When spraying paint on the end face of the steel component, the spray painting mechanism can shield and protect the already painted surface of the steel component to prevent paint from being sprayed onto the already painted surface and affecting the quality of the paint surface; and during the spray painting, it can shield and protect the heating plate to prevent paint from adhering to the surface of the heating plate and affecting the heating effect of the heating plate. Attached Figure Description

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0019] Figure 2 This is a schematic diagram of the installation structure of the first chain conveyor of an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0020] Figure 3 This is a schematic diagram of the installation structure of the supporting mechanism of an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0021] Figure 4 This is a schematic diagram of the installation structure of the clamping shell of the automatic circulating spray painting and drying device for large steel components according to the present invention, when the steel component is clamped.

[0022] Figure 5 This is a schematic diagram of the installation structure of the automatic circulating spray painting and drying device for large steel components according to the present invention when the clamping shell is separated from the steel component.

[0023] Figure 6 This is a schematic diagram of the installation structure of the slider in an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0024] Figure 7 This is a schematic diagram of the roller installation structure of an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0025] Figure 8 This is a schematic diagram of the installation structure of the card plate in an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0026] Figure 9 This is a schematic diagram of the installation structure of the spraying mechanism of an automatic circulating spraying and drying device for large steel components according to the present invention.

[0027] Figure 10 This is a cross-sectional view of the painting mechanism of an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0028] Figure 11 This is a schematic diagram of the installation structure of an automatic circulating spray painting and drying device for large steel components according to the present invention, where the end of the steel component extends into the spray painting mechanism.

[0029] Figure 12 This is a schematic diagram of the installation structure of the clamping frame of an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0030] Figure 13 This is a schematic diagram of the installation structure of the painting robotic arm of an automatic circulating painting and drying device for large steel components according to the present invention.

[0031] Figure 14 This is a schematic diagram of the installation structure of the automatic circulating spray painting and drying device for large steel components of the present invention when the heating plate and the transition frame are separated.

[0032] Figure 15This is a schematic diagram of the installation structure of the clamping frame of an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0033] Figure 16 This is a schematic diagram of the installation structure of the air blowing shell of an automatic circulating spray painting and drying device for large steel components according to the present invention.

[0034] Figure 17 This invention relates to an automatic circulating spray painting and drying device for large steel components. Figure 10 Schematic diagram at point A.

[0035] In the diagram: 1. Lifting mechanism; 101. Side plate; 102. Slider; 103. First spring; 104. Fixing plate; 105. Support beam; 106. Fixing seat; 107. First guide wheel; 108. Clamping shell; 109. Support seat; 110. Roller; 111. Slot; 112. Fixing shell; 113. Wedge block; 114. Clamping plate; 115. Pull rod; 116. Second spring; 117. Guide shaft; 118. Guide plate; 119. Buffer rod; 120. First electric push rod; 121. Wedge plate; 122. Second electric push rod; 123. Connecting seat; 124. Second guide wheel; 125. Support rail; 126. Base plate; 2. Spray painting mechanism; 201. Third electric push rod; 202. Spray painting chamber; 203. Transition frame; 204. Partition plate; 205. Heating plate; 206. First motor; 207. Support frame; 208. Fourth electric push rod; 209. Spray painting robotic arm; 210. Transfer chamber; 211. First exhaust pipe; 212. First air inlet pipe; 213. Isolation chamber; 214. Air blowing shell; 215. Second air inlet pipe; 216. Fifth electric push rod; 217. Moving plate; 218. Clamping frame; 219. First isolation pad; 220. Second isolation pad; 221. Second exhaust pipe; 3. Spray painting booth; 4. Spray painting robot; 5. First chain conveyor; 6. Second chain conveyor; 7. Placement rack; 8. Steel components; 9. Frame; 10. Drying room. Detailed Implementation

[0036] The present invention will be further described below with reference to specific embodiments. The accompanying drawings are for illustrative purposes only and are schematic diagrams, not actual pictures. They should not be construed as limiting the present invention. To better illustrate the specific embodiments of the present invention, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product size. At the same time, all precision instruments such as lead screws, screws, gears, racks, etc. are provided with protective structures such as protective covers. As these are common knowledge, they are not described in detail in the specification. It is understandable for those skilled in the art that some common structures and their descriptions may be omitted in the drawings. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] To make the technical means, creative features, objectives, and effects of this invention easier to understand, it should be noted in the description of this invention that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The invention will be further described below in conjunction with specific embodiments.

[0038] Example like Figures 1-17 As shown, an automatic circulating spray painting and drying device for large steel components includes a spray booth 3 and a placement rack 7. A drying chamber 10 is located at the outlet end of the spray booth 3. A spray painting robot 4 and a first chain conveyor 5 are located inside the spray booth 3. A frame 9 is located at the outlet end of the drying chamber 10. Second chain conveyors 6 are located inside the drying chamber 10 and on one side of the frame 9. Lifting mechanisms 1 are located at both ends of the placement rack 7. The inner side of the lifting mechanism 1 holds a steel component 8. A spray painting mechanism 2 is located at one end of the frame 9. The spray booth 3 and the drying chamber 1... 0. The painting robot 4, the first chain conveyor 5, and the second chain conveyor 6 are all existing technologies and will not be described further here. When the main surface of the steel component 8 needs to be dried, the lifting mechanism 1 lifts the steel component 8 so that the bottom surface of the steel component 8 does not contact the placement frame 7, so that the painting robot 4 can complete the painting treatment of the main surface in one go; and the first chain conveyor 5 and the second chain conveyor 6 can make the placement frame 7 move in an orderly manner inside the painting booth 3 and the drying booth 10 with the steel component 8 carried by the lifting mechanism 1. Meanwhile, a hydraulic push rod is provided on the inner side of the second chain conveyor 6. The height of the conveyor chain can be easily adjusted by the hydraulic push rod, so that the placement frame 7 can be rotated between the first chain conveyor 5 and the second chain conveyor 6. This device is connected to an external control cabinet, whose built-in system is pre-configured with an automatic control program, which can accurately realize the transfer of steel components. This automatic control system uses the mature PLC+HMI human-machine interface in the field of industrial automation as the core control solution, combined with hydraulic or electric drive system and sensor feedback network, to form a complete automated solution covering the entire process of painting and drying of the eight main planes and end faces of steel components, ensuring the stability and accuracy of the coordinated operation of each mechanism.

[0039] In terms of hardware and software compatibility, mainstream brands such as Siemens and Mitsubishi can provide standardized hardware products (such as PLC controllers and drive motors) and supporting software platforms. Users do not need to develop from scratch. They only need to complete targeted program debugging according to the actual production process requirements to quickly deploy and implement control functions, reducing the technical threshold and time cost of system construction.

[0040] As a further improvement to the present invention, such as Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, the lifting mechanism 1 includes a side plate 101 slidably connected to the placement frame 7. A support beam 105 is slidably connected to the inner side of the side plate 101. A clamping shell 108 is fixedly connected to one end of the support beam 105, and the clamping shell 108 is clamped together with the end of the support beam 105. The cross-sectional shape of the clamping shell 108 can be designed according to the cross-sectional shape of the steel component to ensure that the clamping shell 108 can be adapted to the steel component 8. When the clamping shell 108 clamps the end of the steel component 8, the end of the steel component 8 is not exposed on the outside. Both ends of the support beam 105 are fixedly connected to support seats 109. Rollers 110 are rotatably connected to the inner side of the support seats 109. The bottom of the rollers 110 is provided with a support rail 125 fixedly connected to the side plate 101. The rollers 110 can reduce the friction between the support seats 109 and the support rail 125. The other end of the support beam 105 is fixedly connected to a side push assembly. One end of the side plate 101 is provided with a limit assembly. The surface of the side plate 101 is provided with a slot 111. Two support rails 125 symmetrical about the vertical center line of the support beam 105 are provided at one end of the same side plate 101, and a gap of equal width of the support beam 105 is provided between adjacent support rails 125, so that the support beam 105 can pass smoothly through the gap between adjacent support rails 125. When it is necessary to clamp the steel component 8 with the clamping shell 108, the steel component can be lifted using a lifting device and its end placed between adjacent clamping shells 108. Then, the operator moves the support beam 105, carrying the support seat 109, to the inside of the groove on the side plate 101, ensuring that the support seat 109 does not touch the support rail 125 during vertical movement. When the bottom of the roller 110 on the inner side of the support seat 109 is in the same plane as the top surface of the support rail 125, the support beam 105, carrying the support seat 109 and the clamping shell 108, can be moved towards the end of the steel component 8, clamping the clamping shell 108 with the end of the steel component 8. At this time, the roller 110 is positioned on the support rail. At the top of 125, and under the support of the support rail 125, the support base 109 and the support beam 105 can lift the steel component 8 through the clamping shell 108, so that the bottom end of the steel component 8 does not contact the placement frame 7. Then the first chain conveyor 5 can carry the steel component 8 through the placement frame 7 and the clamping shell 108 to move inside the paint booth 3. At the same time, the painting robot 4 can also paint the main surface of the steel component 8. After painting, it is transported to the drying room 10 for drying. After drying, the steel component 8 can be placed on the placement frame 7, and the clamping shell 108 is removed from the end face of the steel component 8 to facilitate subsequent painting of the end of the steel component 8.

[0041] As a further improvement to the present invention, such as Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, the side-pushing assembly includes a fixed plate 104 fixedly connected to the support beam 105. A first spring 103 is fixedly connected to one end of the fixed plate 104, and a slider 102 is fixedly connected to the other end of the first spring 103. The slider 102 is slidably connected to the side plate 101. A fixed seat 106 is fixedly connected to the top of the support beam 105. A first guide wheel 107 is rotatably connected to one end of the fixed seat 106. The first guide wheel 107 is rotatably connected to the support beam 105. The first spring 103 applies a pulling force to the clamping shell 108 via the fixed plate 104 and the support beam 105, ensuring that the clamping shell 108 can be tightly clamped to the end face of the steel component 8. When the support rail 125 no longer obstructs the roller 110 and the support seat 109, the clamping shell 108 separates from the end face of the steel component 8. Under the gravity of the clamping shell 108, the support beam 105, the support seat 109, the roller 110, the fixed plate 104, the first spring 103, the fixed seat 106, and the slider 102, the slider 102 will slide down along the side plate 101, and at the same time, the clamping shell 108 will also slide down, so that the clamping shell 108 is no longer clamped to the end face of the steel component 8, ensuring that the subsequent painting mechanism 2 can paint the end face of the steel component 8.

[0042] As a further improvement to the present invention, such asFigure 4 , Figure 5 , Figure 6 and Figure 8 As shown, the limiting assembly includes a fixed shell 112 fixedly connected to the placement frame 7. A pull rod 115 is slidably connected to the inner side of the fixed shell 112. A wedge block 113 is fixedly connected to the other end of the pull rod 115. A card plate 114 is slidably connected to the other end of the wedge block 113 and is adapted to the card slot 111. A guide shaft 117 is fixedly connected to the top of the fixed shell 112. A guide plate 118 is slidably connected to the outer side of the guide shaft 117 and is fixedly connected to the side plate 101. A buffer rod 119 is fixedly connected to one end of the guide plate 118 and a bottom plate 126 is fixedly connected to the bottom end of the buffer rod 119 and is fixedly connected to the placement frame 7. A second spring 116 is sleeved on the outer side of the pull rod 115. When the steel component 8 needs to be in a raised state, the wedge block 113, along with the clamping plate 114, is engaged with the side plate 101 through the slot 111 under the elastic force of the second spring 116, ensuring that the bottom end face of the steel component 8 does not contact the placement frame 7 when the clamping shell 108 is clamped with the end face of the steel component 8.

[0043] As a further improvement to the present invention, such as Figure 3 and Figure 4 As shown, the limiting assembly also includes a second electric push rod 122 fixedly connected to the frame 9. The movable part of the second electric push rod 122 is fixedly connected to a connecting seat 123. The inner side of the connecting seat 123 is rotatably connected to a second guide wheel 124 adapted to the wedge block 113. After the steel component 8 is painted and dried, when it needs to be placed on the placement rack 7, the second electric push rod 122, through the connecting seat 123, moves the second guide wheel 124 toward the wedge block 113, so that the second guide wheel 124 presses the wedge block 113, causing the wedge block 113 to move the clamping plate 114 out of the clamping groove 111 inside the side plate 101, thereby releasing the restriction on the side plate 101. Then, under the action of the steel component 8's own weight, the side plate 101 will move down along the placement rack 7, so that the steel component 8 is gradually placed on the placement rack 7. Then, the second guide wheel 124 is reset to ensure that the second guide wheel 124 will not affect the movement of the second chain conveyor 6 carrying the placement rack 7. As the side plate 101 moves downward, the side plate 101 also presses the buffer rod 119 along with the guide plate 118. At the same time, the guide plate 118 slides downward along the guide shaft 117. The buffer rod 119 is made of hydraulic damper. Under the buffering effect of the buffer rod 119, the steel component 8 can be placed stably on the placement frame 7.

[0044] As a further improvement to the present invention, such as Figure 3 and Figure 4As shown, the side push assembly also includes a first electric push rod 120 fixedly connected to the frame 9, and the movable part of the first electric push rod 120 is fixedly connected to a wedge plate 121 adapted to the first guide wheel 107; After the steel component 8 is placed on the placement rack 7, the clamping shell 108 can be removed from the end face of the steel component 8, causing the first electric push rod 120, along with the wedge plate 121, to gradually press the first guide wheel 107. Then, the first guide wheel 107, through the support beam 105, gradually separates the clamping shell 108 from the end face of the steel component 8. Once the clamping shell 108 is separated from the steel component 8, the support base 109 and roller 110, driven by the support beam 105, also move from the top of the support rail 125 to the side. When the support rail 125 no longer obstructs the roller 110 and the support base 109, under the gravity of the clamping shell 108, support beam 105, support base 109, roller 110, fixing plate 104, first spring 103, fixing base 106 and slider 102, the slider 102 will slide down along the side plate 101, and at the same time the clamping shell 108 will also slide down, so that the clamping shell 108 is removed from the end face of the steel component 8, ensuring that the subsequent painting mechanism 2 can paint the end face of the steel component 8; The height of the first guide wheel 107 is equal to the height of the clamping shell 108, ensuring that the wedge plate 121 is always in contact with the first guide wheel 107 during the downward movement of the clamping shell 108. This prevents the clamping shell 108 from re-attaching to the end face of the steel component 8 during the downward movement. When the clamping shell 108 stops moving, the wedge plate 121 is reset to ensure that the wedge plate 121 does not affect the movement of the second chain conveyor 6 carrying the placement frame 7.

[0045] The lifting mechanism 1 does not require electricity or air supply to provide power, thus ensuring that the lifting mechanism 1 can be used continuously with the placement rack 7. The lifting mechanism 1 can clamp the steel component 8 through the cooperation between its various parts, and can also place the steel component 8 on the placement rack 7, thus ensuring the flexibility of the lifting mechanism 1 and the placement rack 7.

[0046] As a further improvement to the present invention, such as Figure 9 , Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 15As shown, the painting mechanism 2 includes a third electric push rod 201 fixedly connected to the frame 9. The movable part of the third electric push rod 201 is fixedly connected to the painting chamber 202. The top of the painting chamber 202 is fixedly connected to a fifth electric push rod 216. The movable part of the fifth electric push rod 216 is fixedly connected to a movable plate 217 slidably connected to the painting chamber 202. The bottom end of the movable plate 217 is fixedly connected to a clamping frame 218, and the clamping frame 218 is adapted to the steel component 8. The top of the painting chamber 202 is fixedly connected to a support frame 207. The top of the support frame 207 is fixedly connected to a fourth electric push rod 208. The movable part of the fourth electric push rod 208 is fixedly connected to an isolation chamber 213. The inner side of the isolation chamber 213 is fixedly connected to a painting robot arm 209. The painting robot arm 209 is prior art and will not be described here. When the steel component 8 placed on the mounting rack 7 moves to the side of the spray booth 202, the third electric push rod 201 pushes the spray booth 202 to the outside of the end of the steel component 8. At the same time, the spray booth 202 also moves to both sides of the end of the steel component 8 via the moving plate 217 and the clamping frame 218. Then, the fifth electric push rod 216 clamps the painted surface of the steel component 8 with the clamping frame 218 via the moving plate 217, ensuring that the unpainted area is completely exposed on the outside. Then, the fourth electric push rod 208 moves to the side of the end of the steel component 8 and the clamping frame 218. The chamber 213 and the painting robot arm 209 move downwards to the inside of the painting chamber 202. Then, the painting robot arm 209 can be used to paint the unpainted part at the end of the steel component 8. After the painting is completed, the fourth electric push rod 208 moves the isolation chamber 213 and the painting robot arm 209 out of the inside of the painting chamber 202. During the upward movement of the isolation chamber 213, the isolation chamber 213 will carry away some of the paint mist generated by the painting from the inside of the painting chamber 202 to prevent the paint mist from adhering to the surface of the heating plate 205.

[0047] As a further improvement to the present invention, such as Figure 11 As shown, a first isolation pad 219, which is fixedly connected to the spray booth 202, is fixedly connected to one end of the movable plate 217 and the clamping frame 218. A second isolation pad 220, which is fixedly connected to the movable plate 217, is fixedly connected to the top of the spray booth 202. Both the first isolation pad 219 and the second isolation pad 220 are made of elastic rubber cloth, ensuring that the first isolation pad 219 and the second isolation pad 220 will not affect the normal movement of the movable plate 217 and the clamping frame 218. With the cooperation of the movable plate 217, the clamping frame 218 and the first isolation pad 219, they play the role of isolating the painted part of the steel component 8, ensuring that when the end face of the steel component 8 is painted, the painted part will not be sprayed, thereby ensuring that the painting quality of the painted part will not be affected.

[0048] As a further improvement to the present invention, such as Figure 9 , Figure 10 ,Figure 11 , Figure 12 and Figure 14 As shown, a transition frame 203 is fixedly connected to the inner side of the spray booth 202. A first motor 206 is fixedly connected to one end of the spray booth 202. A heating plate 205 and a partition plate 204 are fixedly connected to the end of the main shaft of the first motor 206, and the heating plate 205 and the partition plate 204 are rotatably connected to the transition frame 203. When the spray painting robot arm 209 sprays paint on the end face of the steel component 8, the first motor 206 will rotate the heating plate 205 and the partition plate 204 by 180 degrees, so that the heating plate 205 is on the outside of the spray booth 202, and the partition plate 204 is on the outside of the spray booth 202. 204 is located inside the spray booth 202, ensuring that when the paint mist inside the spray booth 202 is not cleaned, the heating plate 205 is not located inside the spray booth 202, thus ensuring that the paint mist will not adhere to the surface of the heating plate 205 and affect its operation; when it is necessary to dry the paint on the end face of the steel component 8, the heating plate 205 is rotated to the inside of the spray booth 202. Since the end area of ​​the steel component 8 is small and the drying is fast, it runs parallel to the "main surface spraying and drying" process of the spray booth 3 and the drying booth 10, and will not become a production bottleneck.

[0049] As a further improvement to the present invention, such as Figure 9 , Figure 11 , Figure 12 , Figure 16 and Figure 17 As shown, an air blowing shell 214 is fixedly connected to the inner side of the spray booth 202. A second air inlet pipe 215 is fixedly connected to one end of the air blowing shell 214. A transfer chamber 210 adapted to the isolation chamber 213 is connected to the top of the spray booth 202. A first exhaust pipe 211 is fixedly connected to one end of the transfer chamber 210. A first air inlet pipe 212 is fixedly connected to one end of the isolation chamber 213. A second exhaust pipe 221 is fixedly connected to the bottom of the spray booth 202. The first air inlet pipe 212 and the second air inlet pipe 215 are connected to an external air source. The first exhaust pipe 211 and the second exhaust pipe 221 are connected to an external dry filter, wet filter or gas treatment equipment. The first exhaust pipe 211, the second exhaust pipe 221, the first air intake pipe 212, and the second air intake pipe 215 are all made of flexible hoses to ensure that the painting mechanism 2 can move normally. After the painting is finished and the isolation chamber 213 is moved to the side of the transfer chamber 210, the first air inlet pipe 212 and the second air inlet pipe 215 start to intake air. The gas entering from the second air inlet pipe 215 and the air blowing shell 214 will discharge the paint mist remaining in the paint spraying chamber 202 through the second exhaust pipe 221. After a certain period of time, the heating plate 205 can be rotated to the inside of the paint spraying chamber 202. The gas entering the isolation chamber 213 from the first intake pipe 212 will expel the paint mist inside the isolation chamber 213 through the transfer chamber 210 and the first exhaust pipe 211.

[0050] Meanwhile, the surfaces of the parts that come into contact with the paint are coated with a polytetrafluoroethylene anti-stick coating (temperature resistance >260℃, suitable for drying temperature), which facilitates the periodic cleaning of the paint on the surface of the parts in the later stages.

[0051] The above are preferred embodiments of the present invention. The basic principles, main features and advantages of the present invention have been shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are only illustrative of the principles of the present invention. Various changes and modifications can be made to the present invention without departing from the scope of protection of the present invention. All such changes and modifications fall within the scope of protection of the present invention as defined by the appended claims and their equivalents.

Claims

1. An automatic circulating spray painting and drying device for large steel components, comprising a spray booth (3) and a placement rack (7), characterized in that: The spray booth (3) is equipped with a drying room (10) at its outlet end. The spray booth (3) is equipped with a spray painting robot (4) and a first chain conveyor (5) on its inner side. The drying room (10) is equipped with a frame (9) at its outlet end. The drying room (10) is equipped with a second chain conveyor (6) on its inner side and on one side of the frame (9). The placement rack (7) is equipped with a lifting mechanism (1) at both ends. The lifting mechanism (1) holds a steel component (8) on its inner side. The frame (9) is equipped with a spray painting mechanism (2) at one end.

2. The automatic circulating spray painting and drying device for large steel components according to claim 1, characterized in that: The lifting mechanism (1) includes a side plate (101) slidably connected to the placement rack (7). A support beam (105) is slidably connected to the inner side of the side plate (101). A clamping shell (108) is fixedly connected to one end of the support beam (105), and the clamping shell (108) is clamped together with the end of the support beam (105). A support seat (109) is fixedly connected to both ends of the support beam (105). A roller (110) is rotatably connected to the inner side of the support seat (109). A support rail (125) fixedly connected to the side plate (101) is provided at the bottom of the roller (110). A side push assembly is fixedly connected to the other end of the support beam (105). A limit assembly is provided at one end of the side plate (101). A slot (111) is opened on the surface of the side plate (101).

3. The automatic circulating spray painting and drying device for large steel components according to claim 2, characterized in that: The side-push assembly includes a fixed plate (104) fixedly connected to the support beam (105). One end of the fixed plate (104) is fixedly connected to a first spring (103), and the other end of the first spring (103) is fixedly connected to a slider (102). The slider (102) is slidably connected to the side plate (101). The top end of the support beam (105) is fixedly connected to a fixed seat (106). One end of the fixed seat (106) is rotatably connected to a first guide wheel (107), and the first guide wheel (107) is rotatably connected to the support beam (105).

4. The automatic circulating spray painting and drying device for large steel components according to claim 2, characterized in that: The side push assembly also includes a first electric push rod (120) fixedly connected to the frame (9), and the movable part of the first electric push rod (120) is fixedly connected to a wedge plate (121) adapted to the first guide wheel (107).

5. The automatic circulating spray painting and drying device for large steel components according to claim 2, characterized in that: The limiting assembly includes a fixed housing (112) fixedly connected to the placement frame (7). A pull rod (115) is slidably connected to the inner side of the fixed housing (112). A wedge block (113) is fixedly connected to the other end of the pull rod (115). A card plate (114) is fixedly connected to the other end of the wedge block (113) and slidably connected to the fixed housing (112). The card plate (114) is adapted to the card slot (111). The top of the fixed housing (112) is fixed. A guide shaft (117) is connected, and a guide plate (118) is slidably connected to the outer side of the guide shaft (117). The guide plate (118) is fixedly connected to the side plate (101). A buffer rod (119) is fixedly connected to one end of the guide plate (118). A base plate (126) is fixedly connected to the bottom end of the buffer rod (119). The base plate (126) is fixedly connected to the placement rack (7). A second spring (116) is sleeved on the outer side of the pull rod (115).

6. The automatic circulating spray painting and drying device for large steel components according to claim 2, characterized in that: The limiting assembly also includes a second electric push rod (122) fixedly connected to the frame (9). The movable part of the second electric push rod (122) is fixedly connected to a connecting seat (123). The inner side of the connecting seat (123) is rotatably connected to a second guide wheel (124) adapted to the wedge block (113).

7. The automatic circulating spray painting and drying device for large steel components according to claim 1, characterized in that: The painting mechanism (2) includes a third electric push rod (201) fixedly connected to the frame (9). The movable part of the third electric push rod (201) is fixedly connected to the painting chamber (202). The top of the painting chamber (202) is fixedly connected to a fifth electric push rod (216). The movable part of the fifth electric push rod (216) is fixedly connected to a moving plate (217) slidably connected to the painting chamber (202). The bottom end of the moving plate (217) is fixedly connected to a clamping frame (218), and the clamping frame (218) is adapted to the steel component (8). The top of the painting chamber (202) is fixedly connected to a support frame (207). The top of the support frame (207) is fixedly connected to a fourth electric push rod (208). The movable part of the fourth electric push rod (208) is fixedly connected to an isolation chamber (213). The inner side of the isolation chamber (213) is fixedly connected to a painting robot arm (209).

8. The automatic circulating spray painting and drying device for large steel components according to claim 7, characterized in that: One end of the movable plate (217) and the clamping frame (218) is fixedly connected to a first isolation pad (219) which is fixedly connected to the spray booth (202), and the top of the spray booth (202) is fixedly connected to a second isolation pad (220) which is fixedly connected to the movable plate (217).

9. The automatic circulating spray painting and drying device for large steel components according to claim 7, characterized in that: A transition frame (203) is fixedly connected to the inner side of the spray booth (202). A first motor (206) is fixedly connected to one end of the spray booth (202). A heating plate (205) and a partition plate (204) are fixedly connected to the end of the main shaft of the first motor (206). The heating plate (205) and the partition plate (204) are rotatably connected to the transition frame (203).

10. The automatic circulating spray painting and drying device for large steel components according to claim 7, characterized in that: An air blowing shell (214) is fixedly connected to the inner side of the spray booth (202). A second air inlet pipe (215) is fixedly connected to one end of the air blowing shell (214). A transfer chamber (210) adapted to the isolation chamber (213) is connected to the top of the spray booth (202). A first exhaust pipe (211) is fixedly connected to one end of the transfer chamber (210). A first air inlet pipe (212) is fixedly connected to one end of the isolation chamber (213). A second exhaust pipe (221) is fixedly connected to the bottom of the spray booth (202).

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