CN109051654B

CN109051654B - Discharging mechanism

Info

Publication number: CN109051654B
Application number: CN201810691407.1A
Authority: CN
Inventors: 廖玉琴
Original assignee: Anhui Zhihuihe Technology Service Co Ltd
Current assignee: Anhui Zhihuihe Technology Service Co Ltd
Priority date: 2018-06-28
Filing date: 2018-06-28
Publication date: 2020-11-13
Anticipated expiration: 2038-06-28
Also published as: CN109051654A

Abstract

The invention belongs to an auxiliary tool in the field of building construction, and particularly relates to a discharging mechanism of a scaffold steel pipe, which comprises a material receiving plate and a material guide plate, wherein the plate surface of the material receiving plate is vertically arranged, and the material receiving plate is assembled to be capable of reciprocating in the horizontal direction and the vertical direction; the stock guide with connect flitch parallel arrangement, and the top edge slope of stock guide sets up, the stock guide sets up a plurality ofly with connecing the flitch along crisscross interval, and both are assembled when connecing the flitch to be located the highest position, connect the flitch can with scaffold steel pipe bracket in the top edge top of stock guide, and can make the scaffold steel pipe of its upper bracket fall on the stock guide when connecing the flitch to move down. According to the invention, the painted scaffold steel pipe is received by the receiving plate and then slowly placed on the guide plate, and the receiving plate, the guide plate and the scaffold steel pipe are in line contact in the whole process, so that the damage to a paint surface is avoided to the greatest extent, the automatic discharging is realized, and the spraying quality of the scaffold steel pipe is ensured.

Description

Discharging mechanism

Technical Field

The invention belongs to an auxiliary tool in the field of building construction, and particularly relates to a discharging mechanism of a scaffold steel pipe.

Background

The scaffold is a working platform temporarily erected in the construction process, and is mainly constructed by steel pipes and fasteners. Because most scaffolds all are located open air environment, receive the wind for a long time and blow the sun, very easily produce the rust stain on the surface, consequently before setting up the scaffold among the prior art, need carry out the rust cleaning operation of spraying paint to scaffold steel pipe, the lacquer finish can prevent on the one hand that the scaffold from rustting, and on the other hand scribbles bright-colored scaffold and also can play certain warning effect. The painting surface of the scaffold in the prior art mainly has two types of yellow and red-white alternation, and the painting surface is generally painted by manual work or painting equipment in the prior art, but the defects are that: the painting equipment in the prior art can only paint the paint liquid with single color, and is incomparable to red and white alternate painting surfaces.

Disclosure of Invention

The invention aims to provide a discharging mechanism capable of realizing automatic discharging of a scaffold steel pipe painting system.

In order to achieve the purpose, the invention provides the following technical scheme: a discharging mechanism comprises a material receiving plate and a material guide plate, wherein the plate surface of the material receiving plate is vertically arranged, and the material receiving plate is assembled to be capable of reciprocating in the horizontal direction and the vertical direction; the stock guide with connect flitch parallel arrangement, and the top edge slope of stock guide sets up, the stock guide sets up a plurality ofly with connecing the flitch along crisscross interval, and both are assembled when connecing the flitch to be located the highest position, connect the flitch can with scaffold steel pipe bracket in the top edge top of stock guide, and can make the scaffold steel pipe of its upper bracket fall on the stock guide when connecing the flitch to move down.

Connect the vertical and horizontal reciprocating motion of flitch to constitute synchronous normal running fit by the pivot of material receiving motor and first pendulum rod, the both sides of connecing the flitch articulate respectively and are provided with first pendulum rod and second pendulum rod, the articulated shaft parallel and the disalignment of first pendulum rod and second pendulum rod on connecing the flitch, the first pendulum rod rotate with the second pendulum rod and set up in the frame, the pivot parallel and the disalignment of first pendulum rod and second pendulum rod, connect flitch, first pendulum rod, second pendulum rod to and the frame constitutes a parallel four-bar linkage jointly, the main shaft of material receiving motor constitutes synchronous normal running fit with the pivot of first pendulum rod.

The first swing rod and the second swing rod are respectively provided with a first waist-shaped hole and a second waist-shaped hole along the rod length direction, the first swing rod and the second swing rod are respectively in sliding hinged fit with a hinged shaft arranged on the material receiving plate through the first waist-shaped hole and the second waist-shaped hole, a retaining rod is connected between the first swing rod and the second swing rod, two ends of the retaining rod are respectively hinged with the first swing rod and the second swing rod, the retaining rod, the first swing rod, the second swing rod and the rack jointly form a parallel four-bar mechanism, an elastic unit is arranged between the first swing rod and the hinged shaft, the elastic unit is assembled into a structure that the elastic force of the elastic unit can drive the hinged shaft to slide in the direction away from the rotating shaft of the first swing rod, the side of the first swing rod and the second swing rod is provided with a limiting rod, the length direction of the limiting rod is parallel to the conveying direction of the scaffold steel pipe, the limiting rod is respectively connected with the upper sides of the, when the material receiving plate swings to a high position, the material receiving plate can do horizontal translation motion along the limiting rod.

Each material receiving plate is driven by the same material receiving motor, a crankshaft is connected to a rotating shaft of a first swing rod of each material receiving plate, a main shaft of the material receiving motor is fixedly connected with a main shaft neck of the crankshaft of one material receiving plate, and a crank pin of each crankshaft is hinged to the same connecting rod.

The upper edges of 40% -60% of the material guide plates in number are provided with auxiliary grooves which penetrate through the bottom of the material guide plates; wherein all the guide plates provided with the auxiliary grooves are positioned at the front half part of the discharging mechanism, namely the material inlet end of the scaffold steel pipe.

The invention has the technical effects that: according to the invention, the painted scaffold steel pipe is received by the receiving plate and then slowly prevented from being on the guide plate, and the receiving plate, the guide plate and the scaffold steel pipe are in line contact in the whole process, so that the damage to a paint surface is avoided to the greatest extent, the automatic discharging is realized, and the spraying quality of the scaffold steel pipe is ensured.

Drawings

Fig. 1 is a schematic perspective view of a rust removing and painting system for a scaffold according to an embodiment of the present invention;

fig. 2 is a front view of a discharging mechanism and a distributing mechanism in the rust removing and paint spraying system for the scaffold provided by the embodiment of the invention;

fig. 3 is a front view of a conveying roller, a derusting mechanism, a painting mechanism and a discharging mechanism in the scaffold derusting and painting system provided by the embodiment of the invention;

FIG. 4 is a perspective view of a discharge mechanism provided in accordance with an embodiment of the present invention;

FIG. 5 is a front view of a discharge mechanism provided in accordance with an embodiment of the present invention;

FIG. 6 is a view from the direction A of FIG. 5;

FIG. 7 is a view from direction B of FIG. 5;

FIG. 8 is a perspective view of a feed mechanism provided by an embodiment of the present invention;

FIG. 9 is a front view of a feed mechanism provided by an embodiment of the present invention;

FIG. 10 is a front view of a distribution roller provided by an embodiment of the present invention;

FIG. 11 is a schematic view of a first feed motor assembly provided by an embodiment of the present invention;

fig. 12 is a schematic perspective view of a rust removing mechanism provided in an embodiment of the present invention;

FIG. 13 is a schematic perspective view of a painting mechanism provided in accordance with an embodiment of the present invention;

FIG. 14 is a schematic view of a showerhead assembly according to an embodiment of the present invention;

FIG. 15 is a cross-sectional view of a spray head assembly mechanism provided by an embodiment of the present invention;

FIG. 16 is a schematic perspective view of a spray head control mechanism provided in accordance with an embodiment of the present invention;

FIG. 17 is a schematic perspective view of a discharge mechanism provided in accordance with an embodiment of the present invention;

FIG. 18 is a schematic view of an assembly structure of a receiving plate according to an embodiment of the present invention;

fig. 19 is a circuit diagram of a head control circuit according to an embodiment of the present invention.

Detailed Description

The invention will be further explained with reference to fig. 1 to 19:

in order that the objects and advantages of the invention will be more clearly understood, the invention will now be described in detail with reference to the following examples. It is to be understood that the following text is merely illustrative of one or more specific embodiments of the invention and does not strictly limit the scope of the invention as specifically claimed.

As shown in fig. 1, 2 and 3, a rust removing and paint spraying system for scaffold steel pipes comprises a discharging mechanism 100, a material distributing mechanism 200, a conveying roller 300, a rust removing mechanism 400, a paint spraying mechanism 500 and a discharging mechanism 600; the discharging mechanism 100 is used for flatly laying the scaffold steel pipes 700 into a row, aligning one end of each scaffold steel pipe 700, and conveying the arranged scaffold steel pipes 700 to the distributing mechanism 200 by the discharging mechanism 100; the material distributing mechanism 200 is used for feeding the scaffold steel pipes 700 output by the discharge end of the material discharging mechanism 100 into the derusting mechanism 400 one by one; the derusting mechanism 400 comprises a plurality of steel wire roller brushes 410, each steel wire roller brush 410 is driven by a motor, and each steel wire roller brush 410 is in friction fit with the outer pipe wall of the scaffold steel pipe 700; the painting mechanism 500 is used for painting antirust paint on the scaffold steel pipe 700; the conveying rollers 300 are used for driving the scaffold steel pipes 700 to shuttle in the derusting mechanism 400 and the painting mechanism 500 along the self axial direction, and the discharging mechanism 600 is used for transferring and collecting the painted scaffold steel pipes 700. The rust removing and paint spraying system can realize automatic discharging, material distributing and automatic discharging, and only the whole bundle of scaffolds needs to be put into the discharging mechanism 100 by workers in the whole operation process, so that the labor intensity of the workers is greatly reduced, and the rust removing and paint spraying efficiency of the scaffold steel pipes 700 is greatly improved.

Preferably, as shown in fig. 4, 5, 6, and 7, the discharging mechanism 100 includes an inclined vibration trough 110, a blocking wall 111 is disposed on a lower side of the vibration trough 110, and an upper side of the vibration trough 110 is open, and a conveying direction of the material in the vibration trough 110 is perpendicular to the inclined direction of the vibration trough 110; the discharge end of the vibration groove 110 is connected with a track 120, the track 120 is composed of two layers of guide parts which are arranged at intervals up and down and a limit groove 121 which is flush with the blocking wall 111, wherein the lower layer of guide part is flush with the bottom wall of the vibration groove 110, and the distance between the two layers of guide parts is larger than the outer diameter of the scaffold steel pipe 700 and is smaller than twice of the outer diameter of the scaffold steel pipe 700; the two layers of guide parts are arranged to be in a twist shape, the feeding ends of the two layers of guide parts are parallel to the bottom wall of the vibration groove 110, and the discharging ends of the two layers of guide parts are parallel to the horizontal plane. The scaffold steel pipes 700 enter the rail 120 from the bottom of the vibration groove 110 under the action of the vibration groove 110, because the front half part of the rail 120 is inclined, the scaffold steel pipes 700 can move towards the lower end when feeding in the front half part of the rail 120, so that the lower ends of the scaffolds are aligned, and then when the scaffold steel pipes 700 gradually change to the horizontal posture along the rail 120, one end of each scaffold steel pipe can still be aligned, so that all the scaffold steel pipes 700 entering the material distribution mechanism 200 can always keep one end aligned regardless of the length, and therefore the system can conveniently judge the position of the front end of the scaffold steel pipe 700 and set the feeding distance of the scaffold steel pipe 700 on the material distribution mechanism 200 according to the position.

Preferably, as shown in fig. 7, a movable wall 112 is provided at a side of the vibration tank 110, which is connected to the rail 120, an upper end of the movable wall 112 is hinged to the frame, a lower end of the movable wall 112 is suspended to a position flush with the upper guide portion of the rail 120, a cam shaft 113 is provided outside the movable wall 112, and a cam on the cam shaft 113 forms a contact sliding fit with an outside of the movable wall 112, so that the movable wall 112 can swing back and forth with the rotation of the cam shaft 113. In the working process of the vibration tank 110, the cam shaft 113 synchronously operates, so that the movable wall 112 circularly swings, and at the moment, the lower end of the movable wall 112 can enable the opening degree of the feeding end of the rail 120 to be alternately changed from large to small, so that the scaffold steel pipe 700 can smoothly enter the rail 120, and meanwhile, the movable wall 112 can also play a role in stirring the scaffold steel pipe 700 in the vibration tank 110, so that the scaffold steel pipe 700 at the discharging side of the vibration tank 110 is more evacuated, and the feeding smoothness is further improved.

As shown in fig. 8, 9, 10, and 11, the material distribution mechanism 200 includes a material distribution roller 210 that is intermittently and rotationally arranged, a material guide chute 211 that is arranged along a generating line direction of a roller surface is arranged on a roller surface of the material distribution roller 210, a plurality of material guide chutes 211 are uniformly arranged along a circumferential direction of the material distribution roller 210 at intervals, a step distance of intermittent movement of the material distribution roller 210 is equal to a distance between two adjacent material guide chutes 211, and a roller surface of the material distribution roller 210 is arranged adjacent to a discharge port of the material discharge mechanism 100; the material distribution mechanism 200 further comprises a conveying mechanism for driving the scaffold steel tube 700 to slide in the guide chute 211. In the rotating process of the distributing roller 210, the scaffold steel tubes 700 at the discharging end of the discharging mechanism 100 can enter the material guide chute one by one, so that the scaffold steel tubes 700 are spaced at equal intervals, and downstream feeding is realized one by one.

Preferably, a pulley 212 is rotatably arranged at the bottom of the material guide groove 211, and the axis of the pulley 212 is perpendicular to the axis of the material distribution roller 210. The arrangement of the pulley 212 can reduce the resistance of the scaffold steel tube 700 sliding in the material guide groove 211, and the arrangement of the pulley 212 can also facilitate the transportation of the scaffold steel tube 700 in the subsequent embodiments.

Preferably, the distributing roller 210 is composed of a plurality of disc bodies arranged at intervals, and a pulley 212 is arranged in each material guiding groove 211 of each disc body, so as to further reduce resistance and facilitate the installation of the subsequent steel pipe conveying device.

Preferably, the rotating shafts of the pulleys 212 are respectively connected with a driven wheel 213, the wheel surface of the driven wheel 213 protrudes out of the end surface of the disc body, a driving wheel 214 is arranged beside the end surface of the disc body, the driving wheel 214 is driven by a first feeding motor 215, the driving wheel 214 is assembled to be capable of forming friction transmission fit with the driven wheel 213 of the pulley 212 which moves to the highest position on the disc body, the driven wheel 213 and the driving wheel 214 are made of elastic materials, or the wheel surfaces of the driven wheel 213 and the driving wheel 214 are coated with elastic layers. The driving wheel 214 is arranged on the top of the distributing roller 210, when the pulley 212 carrying the scaffold steel tube 700 reaches the top end of the distributing roller 210, the driven wheel 213 on the pulley 212 can automatically engage with the driving wheel 214, so that the conveying of the scaffold steel tube 700 is automatically started.

Preferably, the driven wheel 213 and the driving wheel 214 are provided with tapered guide surfaces at their edges, the first feeding motor 215 is mounted on a movable plate 216, one end of the movable plate 216 is hinged to the frame and the hinge shaft is parallel to the main shaft of the motor, and the other end of the movable plate 216 is elastically connected to the frame. The driven pulley 213 elastically abuts against the driving pulley 214, so that the driven pulley and the driving pulley can be effectively engaged with each other, and a slip phenomenon due to wear can be prevented.

Specifically, a kidney-shaped hole is formed in one end, elastically connected with the rack, of the movable plate 216, a limiting pin 217 is arranged on the rack, one end of the limiting pin 217 is fixedly connected with the rack, a limiting flange is arranged at the other end of the limiting pin 217, the limiting pin 217 penetrates through the kidney-shaped hole and is connected with the movable plate 216 in a blocking mode through the limiting flange, a pressure spring 218 is further arranged between the movable plate 216 and the rack, the pressure spring 218 is sleeved on the limiting pin 217, an arched cushion 219 is arranged between the pressure spring 218 and the movable plate 216, the arc side of the arched cushion 219 is connected with the movable plate 216 in a blocking mode, and the plane side of the arched cushion. The arcuate blocks 219 enable a more secure fit between the compression spring 218 and the movable plate 216.

Preferably, the frame is further provided with a first travel switch 230 for controlling the start and stop of the first feeding motor 215, and the first travel switch 230 is configured to trigger the first travel switch 230 to open when the movable plate 216 swings in a direction of pressing the compression spring 218 under the action of an external force. The first stroke switch 230 can ensure that the first feed motor 215 is turned on only when the driving pulley 214 is engaged with the driven pulley 213, which can prevent a slip phenomenon from occurring when the driven pulley 213 is suddenly brought into contact with the driving pulley 214.

Preferably, the rust removing mechanism 400 further includes a brush 420 disposed downstream of the wire roller brush 410, and the bundle of bristles of the brush 420 is in interference contact with the outer pipe wall of the scaffold steel pipe 700.

Preferably, the spray mechanism 500 includes a spray head and a control mechanism configured to control the spray head to spray intermittently.

The control mechanism comprises a second travel switch 531 and a third travel switch 534, wherein the second travel switch 531 is arranged at the upstream of the spray head and is close to the spray head, the third travel switch 534 is in linkage fit with the conveying roller 300, the second travel switch 531 can be triggered to be opened when the front end of the scaffold steel pipe 700 reaches the position of the spray head, the conveying roller 300 is connected with a trigger mechanism capable of triggering the third travel switch 534 to be intermittently opened and closed, and the second travel switch 531 and the third travel switch 534 are connected in series and jointly control the opening and closing of a valve on a liquid supply pipeline of the spray head. According to the invention, the intermittent control of the spray head is realized through the second travel switch 531 and the third travel switch 534, so that the spraying of the red and white alternative color scaffold steel pipe 700 is realized. The invention adopts the travel switch to control the on-off of the spray head, thereby avoiding the use of a sensor and an automatic controller for control, because the working condition of the spraying operation area is complicated, the reliability of the sensor under the working condition is poor, and the spraying quality is influenced.

Specifically, the triggering mechanism includes a worm gear 544, a worm 545, and a first cam 541, the worm 545 forms a synchronous rotation fit with the conveying roller 300 through a belt pulley 546 or a chain wheel, the worm gear 544 is engaged with the worm 545, the first cam 541 is in synchronous rotation fit with the worm gear 544, the first cam 541 is semicircular, and a wheel surface of the first cam 541 abuts against the third stroke switch 534.

An electromagnetic clutch 543 is disposed between the first cam 541 and the worm gear 544, the electromagnetic clutch 543 is connected in series with the fourth stroke switch 532, and the fourth stroke switch 532 is linked with the second stroke switch 531. The triggering mechanism further comprises a second cam 542 in synchronous rotation connection with the first cam 541, and a fifth travel switch 533 connected in parallel with the fourth travel switch 532, wherein the fifth travel switch 533 is a normally closed switch, a wheel surface of the second cam 542 is in contact with the fifth travel switch 533, and the second cam 542 is configured such that when the first cam 541 just starts triggering the third travel switch 534, the second cam 542 can just trigger the fifth travel switch 533 to turn off the fifth travel switch 533. The spray heads comprise a first spray head 514 for spraying red paint liquid and a second spray head 515 for spraying white paint liquid, and control valves of liquid supply pipelines of the first spray head 514 and the second spray head 515 are alternately opened and closed. The addition of the second cam 542 can ensure that the first cam 541 can be stopped after returning to the initial position whenever one scaffold steel pipe 700 is painted, regardless of the length of the scaffold, so as to ensure that the next scaffold steel pipe 700 can be painted from a complete red-white cycle.

The first spray head 514 and the second spray head 515 are multiple and are respectively installed on the first annular support 511 and the second annular support 512, the first annular support 511 and the second annular support 512 are coaxially arranged, the first annular support 511 and the second annular support 512 are arranged in a mutually adjacent mode, the first spray head 514 and the second spray head 515 are respectively arranged along the inner annular surfaces of the first annular support 511 and the second annular support 512 at equal intervals, the spraying directions of the first spray head 514 and the second spray head 515 point to the axial centers of the first annular support 511 and the second annular support 512, the first spray head 514 and the second spray head 515 are respectively arranged in a certain inclination angle towards the direction of the first spray head 515, the spraying areas of the first spray head 514 and the second spray head 515 on the outer wall of the scaffold steel pipe 700 are partially overlapped, and the scaffold steel pipe 700 is continuously fed in the spraying process, so that the overlapping of the partial spraying areas of the first spray head 514 and the second spray head 515 can prevent the joint between the red and white paint surfaces from appearing And (4) breaking.

A partition plate 513 is arranged between the first annular support 511 and the second annular support 512, a through hole for the scaffold steel pipe 700 to pass through is arranged in the center of the partition plate 513, the diameter of the through hole is slightly larger than the outer diameter of the scaffold steel pipe 700, the partition plate 513 can clearly demarcate the red paint and the white paint, and the spraying quality is improved. The expression "slightly larger" is used herein with respect to the general knowledge of those skilled in the art, and is intended to allow the scaffold steel tube 700 to pass through the through-hole smoothly, and to avoid the through-hole from being too large to lose the effect of blocking the painted surface, and those skilled in the art should clearly understand the size of the through-hole, and the present invention provides only the following numerical values for reference, that is, the diameter of the through-hole is 1.1 to 1.5 times the diameter of the scaffold steel tube 700.

The lower ends of the first annular bracket 511 and the second annular bracket 512 are both provided with a notch 516 for allowing the excess paint liquid to flow out.

Preferably, the discharging mechanism 600 includes a material receiving plate 610 and a material guiding plate 620, a plate surface of the material receiving plate 610 is vertically disposed, the plate surface of the material receiving plate 610 is perpendicular to the conveying direction of the scaffold steel tube 700, and the material receiving plate 610 is assembled to be capable of reciprocating in both horizontal and vertical directions; the guide plate 620 and the receiving plate 610 are arranged in parallel, the upper edge of the guide plate 620 is inclined, the guide plate 620 and the receiving plate 610 are arranged in a plurality of staggered intervals along the conveying direction of the scaffold steel tube 700, and the guide plate 620 and the receiving plate 610 are assembled in such a way that when the receiving plate 610 is located at the highest position, the receiving plate 610 can support the scaffold steel tube 700 above the upper edge of the guide plate 620, and when the receiving plate 610 moves down, the scaffold steel tube 700 supported on the receiving plate can fall on the guide plate 620.

Specifically, the vertical and horizontal reciprocating motions of the material receiving plate 610 are driven by a material receiving motor 618, two sides of the material receiving plate 610 are respectively hinged with a first swing rod 611 and a second swing rod 612, hinge shafts of the first swing rod 611 and the second swing rod 612 on the material receiving plate 610 are parallel and not coaxial, the first swing rod 611 and the second swing rod 612 are rotatably arranged on a rack, rotating shafts of the first swing rod 611 and the second swing rod 612 are parallel and not coaxial, the material receiving plate 610, the first swing rod 611, the second swing rod 612 and the rack jointly form a parallel four-bar mechanism, and a main shaft of the material receiving motor 618 and the rotating shaft of the first swing rod 611 form synchronous rotating fit.

The first swing link 611 and the second swing link 612 are respectively provided with a first waist-shaped hole 614 and a second waist-shaped hole along the length direction of the rod, the first swing link 611 and the second swing link 612 are respectively in sliding hinged fit with a hinge shaft 615 arranged on the receiving plate 610 through the first waist-shaped hole 614 and the second waist-shaped hole, a retaining rod 613 is connected between the first swing link 611 and the second swing link 612, two ends of the retaining rod 613 are respectively hinged with the first swing link 611 and the second swing link 612, the retaining rod 613, the first swing link 611, the second swing link 612 and the frame jointly form a parallel four-bar mechanism, an elastic unit is arranged between the first swing link 611 and the hinge shaft 615, the elastic unit is assembled so that the elastic force of the elastic unit can drive the hinge shaft 615 to slide in the direction away from the rotating shaft of the first swing link 611, the first swing link 611 and the second swing link 612 are provided with a limiting rod 619, the length direction of the limiting rod 619 is parallel to the conveying direction of the steel pipe scaffold 700, the limiting rod 619 is respectively connected with the upper sides of the two articulated shafts 615 on the material receiving plate 610 in a blocking manner, so that the material receiving plate 610 can perform horizontal translational motion along the limiting rod 619 when swinging to a high position.

Each material receiving plate 610 is driven by the same material receiving motor 618, a crankshaft 617 is connected to a rotating shaft of the first swing rod 611 of each material receiving plate 610, a main shaft of the material receiving motor 618 is fixedly connected with a main shaft neck of the crankshaft 617 of one material receiving plate 610, and a crank pin of each crankshaft 617 is hinged to the same connecting rod 630.

The upper edge of 40% -60% of the material guide plates 620 in each material guide plate 620 is provided with an auxiliary trough 621, and the auxiliary trough 621 penetrates to the bottom of the material guide plate 620; wherein all the material guiding plates 620 provided with the auxiliary grooves 621 are located at a side close to the painting mechanism 500. This enables the longer and shorter scaffold steel tubes 700 to fall into different collection areas, respectively.

The operation method of the rust removing and paint spraying system for the scaffold steel pipes comprises the following steps:

step 1: construction preparation, namely respectively transporting a discharging mechanism 100, a material distributing mechanism 200, a conveying roller 300, a rust removing mechanism 400, a paint spraying mechanism 500 and a discharging mechanism 600 of the scaffold steel pipe rust removing and paint spraying system to a construction site, and then sequentially assembling all the mechanisms;

step 2: stacking all scaffold steel pipes 700 with different lengths on a construction site into a pile in parallel by adopting a manual or mechanical operation mode;

and step 3: the scaffold steel pipes 700 are fed into the vibration groove 110 of the discharging mechanism 100 in batches by adopting a transfer vehicle or a hoisting machine with a clamping jaw, and the length direction of the scaffold steel pipes 700 is ensured to be vertical to the conveying direction of the vibration groove 110;

and 4, step 4: the rust removing and paint spraying system for the scaffold steel pipes is started, the material discharging mechanism 100, the material distributing mechanism 200, the conveying roller 300, the rust removing mechanism 400, the paint spraying mechanism 500 and the material discharging mechanism 600 start to act, and the specific action process is as follows:

1 the scaffold steel pipes 700 are gradually fed along the rails 120 by the vibration of the discharging mechanism 100 and the lower ends of the scaffolds are aligned due to the inclination;

2, the scaffold steel pipes 700 at the discharge end of the discharge mechanism 100 enter a material guide groove 211 formed in a material distributing roller 210 of the material distributing mechanism 200 along the same potential, the material distributing roller 210 rotates intermittently, and the scaffold steel pipes 700 are gradually conveyed to the top end of the material distributing roller 210;

a driven wheel 213 connected with a pulley 212 in the material guide groove 211 and a driving wheel 214 are extruded, the driven wheel 213 and the driving wheel 214 form friction transmission fit, and meanwhile, a first travel switch 230 for controlling the start and stop of a first driving motor is conducted under the extrusion action of the driven wheel 213, so that the first driving motor is started, and the driving wheel 214 is driven to rotate; the scaffold steel pipe 700 is fed along the axis of the scaffold steel pipe under the action of the pulley 212;

4, the material distributing roller 210 rotates again, the driven wheel 213 is separated from the driving wheel 214, the first driving motor stops rotating, and the scaffold steel pipe 700 completely penetrates out of the material guide groove 211;

5, the scaffold steel pipe 700 penetrates out of the guide chute 211 and enters the conveying roller 300, and the conveying roller 300 drives the scaffold steel pipe 700 to pass through the derusting mechanism 400 and the paint spraying mechanism 500 in sequence;

when the scaffold steel pipe 700 passes through the rust removing mechanism 400, firstly, the rust on the surface is removed by the steel wire roller brush 410, and then, the floating dust on the surface is removed by the brush 420;

when the scaffold steel pipe 700 passes through the paint spraying mechanism 500, the second travel switch 531 and the fourth travel switch 532 are triggered to be conducted, at the moment, the third travel switch 534 is also in an initial conducting state, so that the first spray head 514 starts to work, at the moment, the electromagnetic clutch 543 is also powered simultaneously, the first cam 541 and the second cam 542 rotate along with the conveying roller 300, after the conveying roller 300 rotates for a certain number of turns, the third travel switch 534 is disconnected, at the moment, the second spray head 515 starts to work, the first spray head 514 stops working, and alternate spraying of the red paint liquid and the white paint liquid is achieved in a circulating mode sequentially; when the scaffold steel tube 700 passes out of the paint spraying mechanism 500, the second travel switch 531 and the fourth travel switch 532 are disconnected, at this time, if the second cam 542 is just pressed on the fifth travel switch 533, the electromagnetic clutch 543 is also de-energized at the same time, so that the first cam 541 is stopped at the initial station, and if the second cam 542 is not pressed on the fifth travel switch 533, the electromagnetic clutch 543 continues to be energized until the second cam 542 presses the fifth travel switch 533, the electromagnetic clutch 543 is de-energized, and the first cam 541 can return to the initial station similarly;

6 in the process that the scaffold steel pipe 700 penetrates out of the paint spraying mechanism 500, the material receiving motor 618 of the discharging mechanism 600 is started to drive the material receiving plate 610 to move, and when the material receiving plate 610 reaches a high position, the scaffold steel pipe 700 is supported and translated along a horizontal path; the scaffold steel tubes 700 can be placed on the material guide plate 620 in the process that the material receiving plate 610 swings down, at this time, the scaffold steel tubes 700 with larger length roll down to the tail end of the upper edge of the material guide plate 620 along the material guide plate 620 and enter the first collection area, and the scaffold steel tubes 700 with smaller length fall into the auxiliary groove 621 in the process of rolling down and fall into the second collection area along the auxiliary groove 621;

and 5: and after waiting for the surface paint liquid of the scaffold steel pipe 700 to dry, collecting the scaffold steel pipe 700 for later use.

Claims

1. The utility model provides a discharge mechanism which characterized in that: the material receiving plate comprises a material receiving plate (610) and a material guide plate (620), wherein the plate surface of the material receiving plate (610) is vertically arranged, and the material receiving plate (610) can reciprocate in the horizontal direction and the vertical direction; the guide plate (620) and the receiving plate (610) are arranged in parallel, the upper edge of the guide plate (620) is obliquely arranged, the guide plate (620) and the receiving plate (610) are arranged in a staggered and spaced mode, the guide plate (620) and the receiving plate (610) are assembled in such a way that when the receiving plate (610) is located at the highest position, the receiving plate (610) can support the scaffold steel pipe (700) above the upper edge of the guide plate (620), and when the receiving plate (610) moves downwards, the scaffold steel pipe (700) supported on the receiving plate can fall on the guide plate (620); the vertical and horizontal reciprocating motions of the material receiving plate (610) are driven by a material receiving motor (618), two sides of the material receiving plate (610) are respectively provided with a first swing rod (611) and a second swing rod (612) in a hinged mode, hinged shafts (615) of the first swing rod (611) and the second swing rod (612) on the material receiving plate (610) are parallel and not coaxial, the first swing rod (611) and the second swing rod (612) are rotatably arranged on a rack, rotating shafts of the first swing rod (611) and the second swing rod (612) are parallel and not coaxial, the material receiving plate (610), the first swing rod (611), the second swing rod (612) and the rack jointly form a parallel four-link mechanism, and a main shaft of the material receiving motor (618) and the rotating shaft of the first swing rod (611) form synchronous rotating fit; the first swing rod (611) and the second swing rod (612) are respectively provided with a first waist-shaped hole (614) and a second waist-shaped hole along the rod length direction, the first swing rod (611) and the second swing rod (612) are respectively in sliding hinged fit with a hinged shaft (615) arranged on the material receiving plate (610) through the first waist-shaped hole (614) and the second waist-shaped hole, a retaining rod (613) is connected between the first swing rod (611) and the second swing rod (612), two ends of the retaining rod (613) are respectively hinged with the first swing rod (611) and the second swing rod (612), the retaining rod (613), the first swing rod (611), the second swing rod (612) and the rack jointly form a parallel four-bar mechanism, an elastic unit is arranged between the first swing rod (611) and the hinged shaft (615), and the elastic unit can drive the hinged shaft (615) to slide towards the direction far away from the rotating shaft of the first swing rod (611), the side of first pendulum rod (611) and second pendulum rod (612) is equipped with gag lever post (619), the length direction of gag lever post (619) is parallel with the direction of delivery of scaffold steel pipe (700), gag lever post (619) keeps off with two articulated shafts (615) the upper side on connecing flitch (610) respectively and connects, can follow gag lever post (619) when making connecing flitch (610) swing to high position and do the translation motion of horizontal direction.

2. The discharge mechanism of claim 1, wherein: each material receiving plate (610) is driven by the same material receiving motor (618), a crankshaft (617) is connected to a rotating shaft of a first swing rod (611) of each material receiving plate (610), a main shaft of the material receiving motor (618) is fixedly connected with a main shaft neck of the crankshaft (617) of one material receiving plate (610), and a crank pin of each crankshaft (617) is hinged to the same connecting rod (630).

3. The discharge mechanism of claim 2, wherein: the upper edges of 40% -60% of the material guide plates (620) in each material guide plate (620) are provided with auxiliary troughs (621), and the auxiliary troughs (621) penetrate through the bottom of the material guide plates (620); wherein all the material guide plates (620) provided with the auxiliary grooves (621) are positioned at the front half part of the discharging mechanism.

4. A rust removing and paint spraying system for scaffold steel pipes, which comprises the discharging mechanism of any one of claims 1 to 3.