Lifting device for automatic spraying of valve and using method of lifting device

Abstract

The invention discloses a hoisting device for automatic spraying of a valve and a using method thereof.The device comprises a hoisting part and a clamping part for clamping the inlet end and the outlet end of the valve, the hoisting part comprises a supporting rod driven to move along a supporting frame, a hoisting rod installed in a rotating mode and a pressing plate acting on the hoisting rod through downward elastic force, a lifting track is arranged on the supporting frame in each process area, a rack meshed with the gear is further arranged on the supporting frame in the spraying area, the lifting tracks can bear the pressing plate and enable the pressing plate to be lifted upwards to be separated from the hanging rod, and the gear rotates at least one circle under the action of the rack. Under the condition that treatment of all procedures is not affected, stable lifting of the valve is achieved, the problem that the valve swings uncertainly in the moving process is avoided, the position of the valve is determined, a spraying robot can conveniently conduct recognition and positioning, and the spraying efficiency is improved. And the problem of non-uniform valve spraying or spraying leakage caused by the spraying robot according to the spraying path is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of valve processing, and particularly relates to a hoisting device for automatic spraying of valves and a use method thereof. BACKGROUND

[0002] After the valve is processed, a corrosion-resistant coating needs to be sprayed on the valve body to prevent the valve body from being corroded, perforated and failed; the existing valve spraying production line adopts hooks to hoist the valve as a whole, the hooks are rotatably installed on support rods, the upper end rollers of the support rods are movably arranged on a track, and the support rods are pulled to complete multiple processes such as valve assembly, spraying, drying and the like; for example, a valve whole spraying semi-automatic device is disclosed in Chinese patent application CN107413570A. However, the existing spraying production has the following defects: 1. The valve is connected to the hook for hoisting, and the hook is rotatably connected to the support rod through bearings and the like, which will cause uncertain swinging of the valve during movement. Such swinging has a great influence on the automatic spraying of the spraying robot, that is, the valve needs to enter the spraying area at a certain orientation, the spraying robot determines the position of the valve, and then sprays according to a certain path. The swinging of the valve during movement will cause the orientation of the valve to be different, which will cause uneven spraying and missed spraying of the spraying robot; 2. When the valve enters the spraying area, it needs to be rotated to facilitate spraying at different angles. The conventional method is to install a gear on the hook, which can mesh with a fixed rack. The gear drives the hook to rotate. For example, a spraying device for valve production is disclosed in Chinese utility model patent CN220879287U, the disclosure of which is as follows: the rack is horizontally arranged along the conveying direction of the suspension conveying chain and cooperates with the gear; however, when the orientation of the valve is deviated, the gear and the rack are likely to be out of gear, thereby affecting the meshing transmission. SUMMARY

[0003] The present application aims to provide a hoisting device for automatic spraying of valves, which not only realizes stable hoisting of the valve without affecting the processing of each process, avoids uncertain swinging of the valve during movement, but also realizes determination of the orientation of the valve, facilitates identification and positioning of the spraying robot, and avoids the problem that the spraying robot causes uneven spraying or missed spraying of the valve according to the spraying path.

[0004] To achieve the above-mentioned purpose, the hoisting device for automatic spraying of valves has a support frame passing through an assembly area and a spraying area, a hoisting component driven to move on the support frame, and a clamping component installed at the lower end of the hoisting component. The hoisting component comprises: a support rod driven to move along the support frame; a boom rotatably installed at the lower end of the support rod and having a gear fixed at the lower part; The pressing plate is sleeved on the boom and is subjected to downward elastic force on the end face of the boom; The clamping component is used for clamping and fixing the inlet and outlet ends of the valve; The support frame in the assembly area and the spraying area is provided with a lifting track, and the support frame in the spraying area is further provided with a rack engaged with the gear; The front and rear sides of the lifting track are smoothly connected with the middle part, the length of the middle part is greater than the length of the rack, and the front and rear sides of the lifting track correspondingly exceed the front and rear sides of the rack; the lifting track can receive the pressing plate and make the pressing plate lift upward to be separated from the boom; Under the action of the rack, the gear rotates at least one round.

[0005] In some examples of the present application, the support rod is sleeved with an elastic member, and a positioning plate is screw-mounted; The pressing plate is circumferentially limited and axially moved to be connected with the support rod, and a roller capable of contacting the lifting track is rotatably arranged at the end side of the pressing plate; One end of the elastic member is in contact with the positioning plate, and the other end is in contact with the pressing plate.

[0006] In some examples of the present application, a guide wheel is fixedly installed on the boom; A calibration area is arranged in front of the spraying area, and the support frame in the calibration area is provided with a lifting track and a pair of calibration tracks symmetrically arranged on both sides of the hoisting component; One end of the guide wheel is in an acute angle structure, and the other end is in a circular structure; The distance from the inner wall of the calibration track to the front center vertical plane is greater than the radius of the circular end of the guide wheel and less than the distance from the acute angle end side of the guide wheel to the front center vertical plane; under the limitation of the calibration track, the guide wheel can rotate to arrange the acute angle structure forward or backward; The middle part of the lifting track has a length greater than that of the calibration track, and the front and rear sides of the lifting track correspondingly exceed the front and rear sides of the calibration track.

[0007] In some examples of the present application, the end side of the acute angle of the guide wheel is provided with a circular chamfer, and the circular end is transitioned through a pair of parallel edges; The parallel edges are tangent to the circular end of the guide wheel, and are limited by the inner wall of the calibration track.

[0008] In some examples of the present application, a transition wheel is rotatably installed on both sides of the acute angle end side and the parallel edges of the guide wheel; The circumferential side of the transition wheel exceeds the circumferential side of the guide wheel.

[0009] In some examples of the present application, the pair of calibration tracks are divided into a long calibration track and a short calibration track; The inlet ends of the long calibration track and the short calibration track are respectively provided with a lever assembly capable of acting on the acute angle circumferential side of the guide wheel; The long calibration track's push rod assembly is arranged as " / " towards the advancing direction, extruded to rotate clockwise and returned by torsion force, and the short calibration track's push rod assembly is arranged as "\" towards the advancing direction, extruded to rotate elastically clockwise and returned by torsion force.

[0010] In some examples of the present application, the push rod assembly comprises a push rod, a rotating shaft, and a torsion spring; One end of the push rod is installed on the corresponding calibration track through the rotating shaft and the rotating angle is limited, and the other end extends towards the advancing direction, the torsion spring is sleeved on the rotating shaft, one end of which is connected with the push rod and the other end is connected with the corresponding calibration track.

[0011] In some examples of the present application, the clamping component comprises: The clamping frame is arranged as "C", and the middle part is fixedly connected with the suspender; The second clamping block is installed on one end of the clamping frame; The first clamping block is installed on the other end of the clamping frame and is driven to approach and away from the second clamping block; The first clamping block and the second clamping block correspondingly act on the inlet and outlet end sides of the valve.

[0012] In some examples of the present application, the clamping component further comprises: The first solid body is fixedly installed on one end of the clamping frame; The sliding block is slidingly installed in the first solid body and forms a closed cavity with the first solid body, one end of the sliding block is provided with a blind hole with a key groove; The second solid body is fixedly installed on the other end of the clamping frame and is provided with a blind hole with a key groove; Wherein, one end of the first clamping block and the second clamping block is a rod structure and is correspondingly inserted into the blind hole, and the other end is a stepped circular table structure and can clamp the inlet and outlet ends of the valve; the cavity is connected with the air nozzle, and a spring is arranged between the sliding block and the first solid body, under the action of the spring, the sliding block is subjected to the elastic force towards the second clamping block and compresses the cavity.

[0013] A use method of a hoisting device for automatic spraying of a valve, specifically comprising the following steps: S1, in the assembly area, the inlet and outlet ends of the valve are clamped and hoisted by the clamping component, and the hoisting component with the clamping component moves to the calibration area on the support frame; S2, in the calibration area, the pressing plate first contacts the lifting track on the support frame in the calibration area, smoothly transitions and gradually rises, and the pressing plate is separated from the suspender so that the suspender can freely rotate on the support rod; Then the guide wheel passes through between the pair of calibration tracks; From the initial entry to the process through, when the acute angle side of the guide wheel to the forward center distance is not greater than the calibration track inner wall to the forward center distance, and the acute angle is located in the first quadrant, the long calibration track on the rod assembly first with the guide wheel oblique side contact, long calibration track end side and guide wheel again with the deviation contact, and with the guide wheel moves and pushes the material to make the acute angle of the guide wheel is located in the rear of the forward direction; When the acute angle side of the guide wheel to the forward center distance is not greater than the calibration track inner wall to the forward center distance, and the acute angle is located in the second quadrant, the short calibration track on the rod assembly first with the guide wheel oblique side contact, short calibration track end side and guide wheel again with the deviation contact, and with the guide wheel moves and pushes the material to make the acute angle of the guide wheel is located in the rear of the forward direction; When the acute angle of the guide wheel is located in the third, fourth quadrant, or the acute angle side of the guide wheel to the forward center distance is greater than the calibration track inner wall to the forward center distance, the guide wheel through the end side of the long calibration track, the end side of the short calibration track, and the inner wall passage between them, so that the acute angle of the guide wheel is located in the rear of the forward direction; When the calibration track completes the orientation adjustment of the guide wheel, the guide wheel is separated from the calibration track, and the pressing plate is separated from the lifting track, and the hoisting rod is fixed again, and the hoisting component moves to the spraying area; S3, in the spraying area, the pressing plate first contacts with the lifting track on the support frame in the calibration area, and gradually lifts up smoothly, and the pressing plate is separated from the hoisting rod to make the hoisting rod rotate freely on the support rod; The spraying robot positions the valve; at the same time, the gear engages with the rack on the support frame, the hoisting rod can automatically rotate with the support rod, and the spraying robot completes the spraying work of the valve; When the spraying is completed, the gear is separated from the rack, and the pressing plate is acted on the end face of the hoisting rod again to prevent the valve from swinging again.

[0014] Compared with the prior art, the hoisting device for automatic spraying of the valve can realize stable hoisting of the valve without affecting the processing of each process, and avoid uncertain swinging between the valve and the clamping component, and between the support rod and the hoisting rod during movement; The calibration area is provided before entering the spraying area, and a pair of calibration tracks are arranged in the calibration area, so that the guide wheel can rotate under the action of the calibration track, and finally the acute angle structure of the guide wheel is arranged forward or backward, the orientation of the valve is determined, the spraying robot is convenient to identify and position, and the problem that the valve is not uniformly sprayed or missed spraying caused by the spraying robot according to the spraying path is avoided; By setting long calibration track and short calibration track, and setting the push rod assembly capable of acting on the periphery of the guide wheel at the inlet end of the corresponding calibration track, the orientation adjustment of the passing guide wheel is realized, the fixed orientation of the inlet and outlet end of the valve is completed, and the spraying treatment of the asymmetric valve structure is facilitated; in addition, the phenomenon of "stuck / misaligned teeth" when the gear and rack are engaged can be effectively avoided; Since the valve end face is clamped by the first clamping block and the second clamping block in the clamping part, the stability of lifting can be guaranteed, and it can be quickly adjusted and replaced, and can be suitable for valves of different sizes, in addition, positioning rods can be arranged on the first clamping block and the second clamping block, and the positioning rods are matched with the through holes of the valve inlet end flange, so as to enhance the stability of lifting of the larger valve; In the method, on the one hand, the pressing plate can be lifted through the lifting track, the stability of movement can be guaranteed without affecting the process treatment, and the problem of swinging during valve movement is avoided, on the other hand, the calibration area is arranged, the guide wheel with cam structure can be rotated through the calibration track end side and the material pushing assembly thereon, and is uniformly oriented to output, the orientation of the valve below the lifting rod is determined, the inlet end of the valve can be fixed in orientation, spraying treatment is facilitated, and spraying effect is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is the front view of the whole of the present application when it is located in the spraying area; Figure 2 is the schematic view of the whole of the present application when it is located in the spraying area; Figure 3 is the front view of the whole of the present application when it is located in the calibration area; Figure 4 is the schematic view of the whole of the present application when it is located in the calibration area; Figure 5 is the top view of the guide wheel passing between the pair of calibration tracks in the whole of the present application; Figure 6 is the top view of the guide wheel passing between the long calibration track and the short calibration track in the whole of the present application; Figure 7 is the schematic view of the lifting component in the whole of the present application; Figure 8 is the schematic view of the guide wheel in the whole of the present application; Figure 9 is the side view of the clamping part in the whole of the present application; In the figure: 10, support frame; 20, lifting rod; 30, clamping component, 31, clamping frame, 32, first solid, 33, slider, 34, cavity, 35, spring, 36, air nozzle, 37, first clamping block, 38, second solid, 39, second clamping block; 41, lifting rail, 42, pressing plate 42, 43, positioning plate 43, 44, elastic member 44; 51, rack, 52, gear; 61, calibration track, 62, guide wheel, 621, first circular arc, 622, parallel side, 623, inclined side, 624, second circular arc; 63, lever assembly; 70, moving assembly, 71, support rod. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the technical scheme of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in conjunction with the drawings of the embodiments of the present application. The same reference signs in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without any creative effort fall within the scope of protection of the present application.

[0017] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meanings understood by those of ordinary skill in the art to which the present application belongs. The terms "first", "second" and similar terms used in the specification and claims of the present patent application do not represent any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "a" and similar terms do not necessarily represent a quantity limitation. The terms "including", "containing" and similar terms mean that the elements or objects before the term encompass the elements or objects listed after the term and their equivalents, without excluding other elements or objects. The terms "connected" or "connected" and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to represent relative positional relationships, which may change accordingly when the absolute position of the described object changes.

[0018] The direction of movement of the hoisting component is defined as front and back; As shown in Figure 1 , Figure 7 , Figure 9 The hoisting device for automatic spraying of the valve, as shown in the drawings, has a support frame 10 passing through an assembly area and a spraying area, a hoisting component driven to move on the support frame 10, and a clamping component 30 installed at the lower end of the hoisting component. The hoisting component comprises: The support rod 71 has an upper end driven to move along the support frame 10; The boom 20 is rotatably installed at the lower end of the support rod 71 and has a gear 52 fixed at the lower part; The pressing plate 42 is movably sleeved on the boom 20 and is acted on the end surface of the boom 20 by the downward elastic force; The clamping component 30 is used for clamping and fixing the inlet and outlet ends of the valve; The support frame 10 in the assembly area and the spraying area is provided with a lifting track 41, and the support frame 10 in the spraying area is further provided with a rack 51 engaged with the gear 52; The front and rear sides of the lifting track 41 are smoothly connected with the middle part, and the length of the middle part is greater than the length of the rack 51, and the front and rear sides of the lifting track 41 correspondingly exceed the front and rear sides of the rack 51; the lifting track 41 can support the pressing plate 42 and make the pressing plate 42 lift up to separate from the boom 20; Under the action of the rack 51, the gear 52 rotates at least one round; Specifically, the production line can be divided into an assembly area, a defecation and drying area, a spraying area, a drying area and the like according to the process flow, the support frame 10 can pass through each area, and the support frame 10 is internally provided with a guide rail for the hoisting component to move; The hoisting component is multiple, and the multiple hoisting components are moved by the moving assembly 70; the moving assembly 70 can be a transmission chain in which the hoisting components are connected together, that is, the upper end of the support rod 71 is provided with a moving wheel matched with the guide rail, the transmission chain is sequentially connected with the support rod 71, and a driving component is additionally arranged at a suitable position to pull the transmission chain; The boom 20 is rotatably installed on the support rod 71 by a bearing, the bearing is a conical roller bearing for axial heavy load; the gear 52 can be fixed on the boom 20 by means of bolts, welding and the like; the pressing plate 42 is located above the boom 20 and is acted on the upper end surface of the boom 20 by the elastic force, which can make the boom 20 have a large friction force to prevent rotation, or further, one side of the pressing plate 42 close to the boom 20 is a convex-concave friction surface; The middle part of the lifting track 41 is a plane, the front and rear sides are lower than the middle part and are smoothly connected, which can ensure that the end side of the pressing plate 42 can be smoothly lifted; the rack 51 on the support frame 10 in the spraying area can ensure that the gear 52 rotates at least one round, which can ensure that the spraying robot can perform spraying work in the circumferential direction to the valve; when the hoisting component enters the spraying area, the pressing plate 42 is first lifted by the lifting track 41 and moves away from the boom 20, and then the gear 52 contacts the rack 51; The hoisting device for automatic spraying of the valve is used in the assembly area, the end side of the valve is clamped and fixed by the clamping component 30, and the end side of the valve refers to the medium inlet and outlet ends; The lifting component drives the valve to move forward, and before the spraying area, the pressing plate 42 is acted on the end surface of the lifting rod 20 by the downward elastic force, the contact area is increased, the friction force is increased, and the valve is in a static state relative to the lifting component, so that the uncertain swing between the valve and the clamping component 30 and the swing between the supporting rod 71 and the lifting rod 20 in the moving process is avoided; As shown in Figure 1 , Figure 2 shown, when entering the spraying area, the pressing plate 42 first contacts the lifting track 41, and gradually rises along the smooth transition of the lifting track 41, at this time, the pressing plate 42 is separated from the contact with the lifting rod 20, the valve is positioned by the spraying robot, at the same time, the gear 52 is engaged with the rack 51 on the supporting frame 10, the lifting rod 20 can be automatically rotated with the supporting rod 71, and the spraying robot completes the spraying work on the valve; When the spraying is completed, the gear 52 is separated from the rack 51, and the pressing plate 42 is acted on the end surface of the lifting rod 20 by the elastic force again, so as to prevent the valve from swinging uncertainly again.

[0019] As shown in Figure 7 Further, the supporting rod 71 is sleeved with the elastic member 44 and is screw-mounted with the positioning plate 43; The pressing plate 42 is circumferentially limited and axially moved to be connected with the supporting rod 71, and the end side is rotatably provided with a roller capable of contacting the lifting track 41; One end of the elastic member 44 is in contact with the positioning plate 43, and the other end is in contact with the pressing plate 42; Specifically, the positioning plate 43 is screw-mounted on the supporting rod 71, and is used for adjusting the elastic force of the elastic member 44; the pressing plate 42 is connected with the supporting rod 71 in a spline or key mode, and the two sides of the pressing plate 42 perpendicular to the moving direction are rotatably provided with rollers, the rollers are in contact with the lifting track 41 and smoothly transition, so as to prevent the pressing plate 42 from being impacted too much when moving and lifting.

[0020] In some examples of the present application, as shown in Figure 3 , Figure 4 , Figure 7 , Figure 8 The lifting rod 20 is fixedly installed with a guide wheel 62; A calibration area is arranged in front of the spraying area, and the supporting frame 10 in the calibration area is provided with the lifting track 41 and a pair of calibration tracks 61 symmetrically arranged on both sides of the lifting component; One end of the guide wheel 62 is an acute angle structure, and the other end is a circular structure; The distance from the inner wall of the calibration track 61 to the front center vertical plane is greater than the radius of the circular end of the guide wheel 62 and less than the distance from the acute angle end of the guide wheel 62 to the front center vertical plane; under the limitation of the calibration track 61, the guide wheel 62 can be rotated to arrange the acute angle structure forward or backward; The middle part of the lifting track 41 has a length greater than that of the calibration track 61, and the front and rear sides of the lifting track 41 correspondingly exceed the front and rear sides of the calibration track 61; Specifically, the support frame 10 in the assembly area is provided with the lifting track 41 and is not provided with the rack 51. At this time, the pressing plate 42 is lifted through the lifting track 41, and the lifting rod 20 can be freely rotated on the support rod 71 by manual operation to facilitate the clamping and lifting of the valve in different directions by the clamping component 30. After the valve is lifted, the pressing plate 42 is in elastic contact with the lifting rod 20 again. At this time, each valve has a difference in the circumferential direction. When entering the spraying area in this different direction, on the one hand, it is not convenient for the spraying robot to recognize and position, and on the other hand, it will affect the existing spraying path of the spraying robot, causing the problem of uneven or missed spraying of the valve. To solve the above problems, a calibration area is arranged in front of the spraying area in the example. The calibration area is used to adjust the orientation of the valve so that it enters the spraying area uniformly. The inlet end of the valve is defined as A, and the outlet end is defined as B. The uniform orientation is that the vertical plane in which the axis of the inlet end A and the outlet end B of the valve is located is parallel to the forward direction of the lifting component. That is, the inlet end A is located on the front side of the forward direction, or the outlet end B is located on the front side of the forward direction. Initially, the acute-angled end side of the guide wheel 62 corresponds to the inlet end A of the valve, and the opposite side (the first circular arc 621) corresponds to the outlet end B of the valve, as shown in Figure 5 , Figure 9 As shown, in addition, the vertical plane in which the forward center is located is consistent with the axes of the lifting rod 20, the support rod 71 and the guide wheel 62. A pair of calibration tracks 61 are arranged perpendicular to the moving direction of the lifting component. The guide wheel 62 can be fixed on the lifting rod 20 by bolts or welding. When the lifting component enters the calibration area, the pressing plate 42 is first lifted by the lifting track 41 so that the lifting rod 20 can be freely rotated. Then the guide wheel 62 passes through the calibration track 61. The guide wheel 62 is a cam structure. The circular diameter of the guide wheel 62 is slightly smaller than the distance between the pair of calibration tracks 61. The distance from the acute-angled end side of the guide wheel 62 to the center is greater than the distance from the inner wall of the calibration track 61 to the vertical plane of the forward center. The purpose is to enable the guide wheel 62 to rotate by itself under the action of the calibration track 61. Finally, the acute-angled structure of the guide wheel 62 is arranged forward or backward. When the calibration track 61 completes the orientation adjustment of the guide wheel 62 and the support rod 71, the guide wheel 62 is separated from the calibration track 61, and the pressing plate 42 is separated from the lifting track 41. The pressing plate 42 is pressed against the support rod 71 again by the elastic force, which can ensure that the support rod 71, the clamping component 30 and the valve enter the spraying area in a fixed orientation. Further, as shown in Figure 8 The acute-angled end side of the guide wheel 62 is provided with a circular chamfer, and the circular end is transitioned by a pair of parallel edges 622. The parallel edges 622 are tangent to the circular end of the guide wheel 62 and are limited by the inner wall of the calibration track 61. Specifically, the circular end of the guide wheel 62 is first circular arc 621, the acute-angled end side is chamfered to form the second circular arc 624, and the radius of the second circular arc 624 is smaller than that of the first circular arc 621; the two sides of the acute-angled shape form an inclined side 623, and the circular end of the guide wheel 62 and the end side of the acute-angled shape are connected by a parallel side 622, that is, the first circular arc 621 and the inclined side 623 are connected by the parallel side 622, and the length of the parallel side 622 is not greater than the radius of the first circular arc 621, so that when the guide wheel 62 enters the calibration track 61, the calibration track 61 acts on the inclined side 623 first; As Figure 5 shown, for convenience of description, the center of the guide wheel 62 is taken as the origin, the forward direction is towards the y positive axis, the distance from the acute-angled end side of the guide wheel 62 to the y axis is x1, and the distance from the inner wall of the calibration track 61 to the origin on the y axis is a; When x1 is greater than a, the guide wheel 62 passes through a pair of calibration tracks 61, and the end side of the calibration track 61 deviates to contact the guide wheel 62 first, for example, the end side of the calibration track 61 acts on the inclined side 623 of the guide wheel 62, so that the guide wheel 62 rotates until the acute-angled shape is close to the y negative axis, and preferably, the end side of the calibration track 61 is chamfered to ensure smooth contact; when x1 is not greater than a and x1 is located in the first and second quadrants, the guide wheel 62 enters the calibration track 61, and the inner wall of the calibration track 61 deviates to contact the guide wheel 62, so that the acute-angled shape of the guide wheel 62 is in smooth contact with the inner wall of the calibration track 61 until it is close to the y positive axis; The second circular arc 624 of the acute-angled end side and the inclined side 623 can make the guide wheel 62 smoothly enter between a pair of calibration tracks 61, and the parallel side 622 is tangent to the circular structure, which can limit the guide wheel 62 between a pair of calibration tracks 61 to avoid swinging of the guide wheel 62; Further, as Figure 8 shown, the transition wheels are rotatably installed on both sides of the acute-angled end side and the parallel side 622 of the guide wheel 62; The circumferential side of the transition wheel slightly exceeds the circumference of the guide wheel 62; Specifically, when the guide wheel 62 deviates to contact and rotate with the calibration track 61, the transition wheel can roll in contact with the inner wall of the calibration track 61, which reduces friction and avoids the problem of the guide wheel 62 being stuck.

[0021] In some examples of the present application, as Figure 6 shown, the inlet end of a pair of calibration tracks 61 is a smooth inwardly tapered structure; The pair of calibration tracks 61 are divided into long calibration tracks 61 and short calibration tracks 61; The long calibration track 61 and the short calibration track 61 are respectively provided with a lever assembly 63 capable of acting on the acute angle side of the guide wheel 62; The lever assembly 63 of the long calibration track 61 is squeezed to rotate clockwise by elastic force, and the lever assembly 63 of the short calibration track 61 is squeezed to rotate elastically clockwise by elastic force; Further, the lever assembly 63 comprises a lever, a rotating shaft, and a torsional spring; One end of the lever is installed on the corresponding calibration track 61 through the rotating shaft, and the rotating angle is limited, the torsional spring is sleeved on the rotating shaft, one end of which is connected with the lever, and the other end is connected with the corresponding calibration track 61; Under the action of the torsional spring, the levers on the long calibration track 61 are arranged in “ / ”, and the levers on the long calibration track 61 are arranged in “\”; Specifically, the calibration track 61 can be provided with a limiting block for limiting the angle of the lever, and under the action of the torsional spring, the corresponding lever is initially arranged in “ / ” or “\” inclination, and can be squeezed to rotate clockwise or counterclockwise; In the above example, the guide wheel 62 rotates to complete the unified orientation adjustment by being limited by a pair of calibration tracks 61, and the unified direction has the inlet end A located on the front side or the outlet end B located on the front side, which still has spraying differences for asymmetric valves; When the hoisting device moves forward, the guide wheel 62 successively contacts the long calibration track 61 and the short calibration track 61, and is finally limited by a pair of calibration tracks 61; When x1 of the guide wheel 62 is not greater than a, and the acute angle is located in the first quadrant, the lever assembly 63 on the long calibration track 61 first contacts the inclined side 623 of the guide wheel 62, and moves with the guide wheel 62 to stir the material so that x1 in the guide wheel 62 is greater than a, and the end side of the long calibration track 61 again contacts the guide wheel 62 to deviate, so that the guide wheel 62 rotates clockwise until the acute angle is close to the y negative axis, and the lever assembly 63 is squeezed to rotate clockwise, when the guide wheel 62 passes through the stirring assembly, the stirring assembly returns to the initial state, and then the guide wheel 62 continues to pass through the stirring assembly of the short calibration track 61, the stirring assembly acts on the first circular arc 621 of the guide wheel 62 to be squeezed to rotate counterclockwise, and finally the acute angle of the guide wheel 62 is towards the y negative axis, and the first circular arc 621 is arranged towards the y positive axis, that is, the outlet end B of the valve is arranged on the front side, and the inlet end A is arranged on the rear side; When the x1 of the guide wheel 62 is not greater than a, and the acute angle is located in the second quadrant, the guide wheel 62 first passes through the material pushing assembly of the long calibration track 61, the material pushing assembly can slightly push or not push the guide wheel 62, and then the guide wheel 62 is extruded to rotate clockwise and finally returns to the initial state; then the guide wheel 62 continues to pass through the material pushing assembly of the short calibration track 61, the pushing rod assembly 63 first contacts the inclined side 623 of the guide wheel 62, and the pushing rod assembly 63 pushes the guide wheel 62 to move so that the x1 of the guide wheel 62 is greater than a, and then the end side of the short calibration track 61 contacts the guide wheel 62 to deviate, so that the guide wheel 62 rotates counterclockwise until the acute angle is close to the y negative axis, and the first circular arc 621 is arranged towards the y positive axis, that is, the outlet end B of the valve is arranged on the front side, and the inlet end A is arranged on the rear side; When the x1 of the guide wheel 62 is greater than a, or the acute angle is located in the third or fourth quadrant, the material pushing assembly can act on the circumferential side of the guide wheel 62, but the action makes the guide wheel 62 rotate to make the acute angle close to the y negative axis, and finally the guide wheel 62 is guided by the end side and the inner wall of the calibration track 61 to make the guide wheel 62 uniform in orientation, and the valve is uniform in orientation; Preferably, the inlet end of the pair of calibration tracks 61 is a smooth inwardly tapered structure, that is, in the forward direction, the taper is located on the front side of the material pushing assembly, and the size before and after the taper still needs to satisfy that the distance from the inner wall of the calibration track 61 to the vertical plane of the center of the forward direction is greater than the radius of the circular end of the guide wheel 62 and less than the distance from the acute angle end side of the guide wheel 62 to the vertical plane of the center of the forward direction, and the spacing before the taper of the pair of calibration tracks 61 can facilitate the pushing and rotating space of the material pushing assembly, and also ensure that there is enough space for the guide wheel 62 to adjust when the guide wheel 62 contacts the end side of the calibration track 61; In the example, the long calibration track 61 and the short calibration track 61 are arranged, and the pushing rod assembly 63 capable of acting on the circumferential side of the guide wheel 62 is arranged at the inlet end of the corresponding calibration track 61, so that the orientation of the passing guide wheel 62 is adjusted and unified, and the spraying process of the non-symmetrical valve structure is facilitated; in addition, after the orientation of the guide wheel 62 is adjusted, the support rod 71 and the gear 52 thereon are uniform in orientation, and the rack 51 in the spraying area is reasonably installed at the initial design, so that the phenomenon of “stuck / tooth error” of the gear 52 and the rack 51 is effectively avoided when the gear 52 and the rack 51 are engaged.

[0022] In some examples of the present application, as shown in Figure 9 The clamping member 30 includes: The clamping frame 31 is arranged in a “C” shape; The second clamping block 39 is installed at one end of the clamping frame 31; The first clamping block 37 is installed at the other end of the clamping frame 31 and is driven to approach and move away from the second clamping block 39; The first clamping block 37 and the second clamping block 39 correspondingly act on the inlet and outlet ends of the valve; In some examples of the present application, as shown in Figure 9 The clamping component 30 further comprises: A first solid body 32 fixedly mounted at one end of the clamping frame 31; A sliding block 33 slidingly mounted in the first solid body 32 and forming a closed cavity 34 with the first solid body 32, one end of the sliding block 33 being provided with a blind hole having a key groove; A second solid body 38 fixedly mounted at one end of the clamping frame 31 and provided with a blind hole having a key groove; Wherein, one end of the first clamping block 37 and the second clamping block 39 is a rod structure and is correspondingly inserted into the blind hole, and the other end is a stepped circular table structure and can be clamped at the inlet and outlet end of the valve; the cavity 34 is connected with the air nozzle 36, and the sliding block 33 and the first solid body 32 are provided with a spring 35, and under the action of the spring 35, the sliding block 33 is subjected to a spring force towards the second clamping block 39 and compresses the cavity 34; Specifically, the first solid body 32 and the second solid body can be fixedly mounted on both sides of the clamping frame 31 by bolts, the first clamping block 37 and the second clamping block 39 can be detachably inserted into the corresponding blind hole, and different lengths or diameters can be selected to be suitable for different valve inlet and outlet ends, and the rod end is connected by spline or flat key insertion to avoid rotation; one end of the first clamping block 37 and the second clamping block 39 is a double circular table structure, the inner circular table is embedded in the inlet and outlet of the valve, and the outer circular table is sealed at the inlet and outlet end surface of the valve, which can ensure the clamping and hoisting of the valve and prevent paint from entering the interior of the valve during the spraying process, and the rod body can avoid the spraying treatment of the valve end surface; In the initial state, the appropriate first clamping block 37 and second clamping block 39 are selected for insertion assembly, and under the action of the spring 35, the sliding block 33 moves inward, at this time, the distance between the first clamping block 37 and the second clamping block 39 is less than the distance between the inlet and outlet ends of the valve; When the valve is clamped, high-pressure gas enters the cavity 34 through the air nozzle 36, and the high pressure makes the sliding block 33 move away from the valve, the first clamping block 37 moves along with it, the valve is located between the first clamping block 37 and the second clamping block 39, and the high-pressure gas is stopped, under the action of the spring 35, the sliding block 33 moves towards the second clamping block 39, and the first clamping block 37 and the second clamping block 39 complete the clamping and hoisting of the valve. In this example, the valve end surface is clamped by the first clamping block 37 and the second clamping block 39, which can ensure the stability of hoisting, and it can be quickly adjusted and replaced, which can be suitable for valves of different sizes, and in addition, the first clamping block 37 and the second clamping block 39 can be provided with positioning rods, which are matched with the through holes of the valve inlet end flange to enhance the stability of hoisting of large valves.

[0023] When the hoisting device for automatic spraying of valves is used, the following steps are included: S1, in the assembly area, the valve inlet and outlet ends are clamped and hoisted by the clamping part 30, and the hoisting part with the clamping part 30 moves to the calibration area on the support frame 10; S2, in the calibration area, the pressing plate 42 first contacts the lifting rail 41 on the support frame 10 in the calibration area, and is gradually lifted in a smooth transition, and the pressing plate 42 is separated from the lifting rod 20 so that the lifting rod 20 can freely rotate on the support rod 71; Then the guide wheel 62 passes between the pair of calibration rails 61; From the initial entering to the passing process, when the acute angle end side of the guide wheel 62 to the advancing center distance is not greater than the inner wall of the calibration rail 61 to the advancing center distance, and the acute angle is located in the first quadrant, the long calibration rail 61 first contacts the inclined side 623 of the guide wheel 62, and then the end side of the long calibration rail 61 deviates to contact the guide wheel 62, and as the guide wheel 62 moves, the material is pushed to make the acute angle of the guide wheel 62 located at the rear side of the advancing direction; When the acute angle end side of the guide wheel 62 to the advancing center distance is not greater than the inner wall of the calibration rail 61 to the advancing center distance, and the acute angle is located in the second quadrant, the short calibration rail 61 first contacts the inclined side 623 of the guide wheel 62, and then the end side of the short calibration rail 61 deviates to contact the guide wheel 62, and as the guide wheel 62 moves, the material is pushed to make the acute angle of the guide wheel 62 located at the rear side of the advancing direction; When the acute angle of the guide wheel 62 is located in the third and fourth quadrants, or the acute angle end side of the guide wheel 62 to the advancing center distance is greater than the inner wall of the calibration rail 61 to the advancing center distance, the guide wheel 62 passes through the end side of the long calibration rail 61, the end side of the short calibration rail 61, and the inner wall passage therebetween, so that the acute angle of the guide wheel 62 is located at the rear side of the advancing direction; When the calibration rail 61 completes the orientation adjustment of the guide wheel 62, the guide wheel 62 is separated from the calibration rail 61, and at the same time, the pressing plate 42 is separated from the lifting rail 41, and the lifting rod 20 is re-pressed and fixed, and the hoisting part moves to the spraying area; S3, in the spraying area, the pressing plate 42 first contacts the lifting rail 41 on the support frame 10 in the calibration area, and is gradually lifted in a smooth transition, and the pressing plate 42 is separated from the lifting rod 20 so that the lifting rod 20 can freely rotate on the support rod 71; The spraying robot positions the valve; at the same time, the gear 52 is engaged with the rack 51 on the support frame 10, the lifting rod 20 can automatically rotate circumferentially with the support rod 71, and the spraying robot completes the spraying work on the valve; When the spraying is completed, the gear 52 is separated from the rack 51, and the pressing plate 42 is re-acted on the end surface of the lifting rod 20 by the elastic force to prevent the valve from swinging again.

[0024] The above describes in detail an exemplary embodiment of the lifting device for automatic spraying of valves according to the present application with reference to the preferred embodiments, however, those skilled in the art can understand that various modifications and changes can be made to the above specific embodiments without departing from the concept of the present application, and various technical features and structures according to the present application can be combined without departing from the protection scope of the present application, and the protection scope of the present application is determined by the appended claims.

Claims

1. A hoisting device for automatic valve spraying, comprising a support frame (10) passing through an assembly area and a spraying area, a hoisting component driven to move on the support frame (10), and a clamping component (30) installed at the lower end of the hoisting component. Its features are, The hoisting components include: The support rod (71) is driven to move along the support frame (10); The boom (20) is rotatably mounted on the lower end of the support rod (71), and a gear (52) is fixed at the lower part. The pressure plate (42) is movably mounted on the hanger (20) and subjected to a downward elastic force on the end face of the hanger (20); Clamping component (30) is used to clamp and fix the inlet and outlet ends of the valve; Among them, the support frame (10) located in the assembly area and the spraying area is provided with a lifting rail (41), and the support frame (10) located in the spraying area is also provided with a rack (51) that meshes with the gear (52). The front and rear sides and the middle of the lifting track (41) are smoothly transitioned, and the length of the middle part is greater than the length of the rack (51), and the front and rear sides are correspondingly extended beyond the front and rear sides of the rack (51); the lifting track (41) can support the pressure plate (42) and make the pressure plate (42) lift upward and separate from the lifting rod (20). Under the action of the rack (51), the gear (52) rotates at least one revolution.

2. The hoisting device for automatic valve spraying according to claim 1, characterized in that, The support rod (71) is fitted with an elastic element (44) and a positioning plate (43) is threaded on it. The pressure plate (42) is circumferentially limited and axially movable, connected to the support rod (71), and has rollers on its end side that can contact the lifting rail (41) for rotation. One end of the elastic element (44) is in contact with the positioning plate (43), and the other end is in contact with the pressure plate (42).

3. The hoisting device for automatic valve spraying according to claim 1, characterized in that, Guide wheels (62) are fixedly installed on the boom (20); A calibration area is provided on the front side of the spraying area. The support frame (10) in the calibration area is provided with a lifting rail (41) and a pair of calibration rails (61) symmetrically located on both sides of the hoisting component. One end of the guide wheel (62) has an acute-angled structure, and the other end has a circular structure; The distance from the inner wall of the calibration track (61) to the vertical plane of the forward center is greater than the radius of the circular end of the guide wheel (62) and less than the distance from the acute-angled end of the guide wheel (62) to the vertical plane of the forward center; under the limit of the calibration track (61), the guide wheel (62) can rotate so that the acute-angled structure is arranged facing forward or backward; The length of the middle part of the lifting track (41) is greater than the length of the calibration track (61), and the front and rear sides are respectively extended beyond the front and rear sides of the calibration track (61).

4. A hoisting device for automatic valve spraying according to claim 3, characterized in that, The guide wheel (62) has a rounded chamfer on its acute-angled end, which transitions to the circular end through a pair of parallel sides (622); The parallel edge (622) is tangent to the circular end of the guide wheel (62) and is limited by the inner wall of the calibration track (61).

5. A hoisting device for automatic valve spraying according to claim 4, characterized in that, Transition wheels are rotatably installed on both sides of the acute-angled end of the guide wheel (62) and on both sides of the parallel side (622); The circumferential side of the transition wheel exceeds the circumferential side of the guide wheel (62).

6. A hoisting device for automatic valve spraying according to any one of claims 3 to 5, characterized in that, A pair of calibration tracks (61) are divided into a long calibration track (61) and a short calibration track (61). The inlet ends of the long calibration track (61) and the short calibration track (61) are respectively provided with lever assemblies (63) that can act on the acute-angled periphery of the guide wheel (62). The lever assembly (63) of the long calibration track (61) is arranged in a " / " shape in the forward direction, rotates clockwise under pressure and returns to its original position under torque, and the lever assembly (63) of the short calibration track (61) is arranged in a "\" shape in the forward direction, rotates clockwise under pressure and returns to its original position under torque.

7. A hoisting device for automatic valve spraying according to claim 6, characterized in that, The lever assembly (63) includes a lever, a pivot, and a torsion spring; One end of the lever is mounted on the corresponding calibration track (61) via a rotating shaft and its rotation angle is limited. The other end extends out toward the forward direction. A torsion spring is mounted on the rotating shaft, with one end connected to the lever and the other end connected to the corresponding calibration track (61).

8. A hoisting device for automatic valve spraying according to any one of claims 1 to 5, characterized in that, The clamping component (30) includes: The clamping frame (31) is arranged in a "C" shape and is fixedly connected to the lifting rod (20) in the middle; The second clamping block (39) is installed at one end of the clamping frame (31); The first clamping block (37) is installed at the other end of the clamping frame (31) and is driven to move closer to and away from the second clamping block (39). The first clamping block (37) and the second clamping block (39) act on the inlet and outlet sides of the valve respectively.

9. A hoisting device for automatic valve spraying according to claim 8, characterized in that, The clamping component (30) further includes: The first solid (32) is fixedly installed at one end of the clamping frame (31); The slider (33) is slidably installed inside the first solid (32) and forms a closed cavity (34) with the first solid (32). One end of the slider (33) is provided with a blind hole with a keyway. The second solid (38) is fixedly installed at the other end of the clamping frame (31) and has a blind hole with a keyway; Among them, the first clamping block (37) and the second clamping block (39) have a rod structure at one end and are inserted into the blind hole accordingly, and the other end is a stepped frustum structure that can be clamped at the inlet and outlet ends of the valve; the cavity (34) is connected to the air nozzle (36), and a spring (35) is provided between the slider (33) and the first solid (32). Under the action of the spring (35), the slider (33) is subjected to the elastic force toward the second clamping block (39) and compresses the cavity (34).

10. A method of using the hoisting device for automatic valve spraying according to claim 6, characterized in that, Specifically, the following steps are included: S1, in the assembly area, the valve inlet and outlet ends are clamped and hoisted by clamping component (30), and the hoisting component moves the clamping component (30) on the support frame (10) to the calibration area; S2, in the calibration area, the pressure plate (42) first contacts the lifting rail (41) on the support frame (10) in the calibration area, and gradually rises smoothly. The pressure plate (42) disengages from the boom (20) so that the boom (20) can rotate freely on the support rod (71). Then the guide wheel (62) passes between a pair of calibration rails (61); During the process from initial entry to passage, when the distance from the acute-angled end of the guide wheel (62) to the center of advance is not greater than the distance from the inner wall of the calibration track (61) to the center of advance, and the acute angle is located in the first quadrant, the lever assembly (63) on the long calibration track (61) first contacts the inclined side (623) of the guide wheel (62), and then the end of the long calibration track (61) contacts the guide wheel (62) at an angle. As the guide wheel (62) moves, it pushes the material so that the acute angle of the guide wheel (62) is located on the rear side of the forward direction. When the distance from the acute-angled end of the guide wheel (62) to the center of advance is not greater than the distance from the inner wall of the calibration track (61) to the center of advance, and the acute angle is located in the second quadrant, the lever assembly (63) on the short calibration track (61) first contacts the inclined side (623) of the guide wheel (62), and then the end of the short calibration track (61) contacts the guide wheel (62) at an angle, and as the guide wheel (62) moves, it pushes the material so that the acute angle of the guide wheel (62) is located on the rear side of the forward direction; When the acute angle of the guide wheel (62) is located in the third or fourth quadrant, or when the distance from the acute angle end of the guide wheel (62) to the center of advance is greater than the distance from the inner wall of the calibration track (61) to the center of advance, the guide wheel (62) passes through the end of the long calibration track (61), the end of the short calibration track (61), and the inner wall channel between them, so that the acute angle of the guide wheel (62) is located on the rear side of the forward direction; After the calibration track (61) completes the orientation adjustment of the guide wheel (62), the guide wheel (62) is removed from the calibration track (61), and at the same time the pressure plate (42) is removed from the lifting track (41), and the lifting rod (20) is tightened and fixed again, and the hoisting component is moved to the spraying area; S3, in the spraying area, the pressure plate (42) first contacts the lifting rail (41) on the support frame (10) in the calibration area, and gradually rises smoothly. The pressure plate (42) disengages from the hanger (20) so that the hanger (20) can rotate freely on the support rod (71). The spraying robot positions the valve; at the same time, the gear (52) meshes with the rack (51) on the support frame (10), and the boom (20) can automatically rotate circumferentially with the support rod (71), so that the spraying robot completes the spraying operation on the valve; When the spraying is completed and the gear (52) leaves the rack (51), the pressure plate (42) is subjected to elastic force again and acts on the end face of the rod (20) to prevent the valve from swinging uncertainly again.

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