CN211217216U

CN211217216U - Spraying hanger and spraying equipment

Info

Publication number: CN211217216U
Application number: CN201921893612.2U
Authority: CN
Inventors: 姜辉; 周水波; 欧耀辉
Original assignee: Sany Automobile Manufacturing Co Ltd
Current assignee: Sany Automobile Manufacturing Co Ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-08-11
Anticipated expiration: 2029-11-05

Abstract

The utility model provides a spraying hanger and spraying equipment. Wherein, the spraying hanger includes: the sleeve is provided with a plurality of open slots along the circumferential direction, the length of the sleeve is greater than that of the tubular workpiece, and the outer diameter of the sleeve is smaller than the inner diameter of the tubular workpiece; the jacking part is arranged in the sleeve; the tensioning mechanism is arranged in the sleeve and corresponds to the open slot, at least part of the tensioning mechanism can selectively extend out of the sleeve from the open slot or be accommodated in the sleeve, the tensioning mechanism is connected with the tightening part, and the tightening part moves towards the tensioning mechanism from two ends to enable at least part of the tensioning mechanism to extend out through the open slot, so that when the spraying hanger penetrates into the tubular workpiece, the part of the tensioning mechanism extending out of the open slot applies tensioning force to the inner wall of the tubular workpiece, and the tubular workpiece is fixed. Through the technical scheme of the utility model, the paint finish damage of reducible tubulose work piece is applicable to the tubulose work piece of different length, is favorable to realizing continuous spraying, improves spraying efficiency.

Description

Spraying hanger and spraying equipment

Technical Field

The utility model relates to a spraying technical field particularly, relates to a spraying hanger and spraying equipment.

Background

The coating is mainly used for carrying out certain anticorrosion treatment on the surface of a workpiece in a mode of forming a protective layer, and has the effects of reducing corrosion, beautifying the appearance and the like. In the coating process, the coating is limited by the requirement of a coating process, the coating is adsorbed on the surface of a workpiece in a liquid state or a powder state when the coating is just sprayed, the coating is cured on the surface of the workpiece after being baked for a certain time and at a certain temperature, and a compact and stable protective layer can be formed.

The tubular workpiece is limited by the shape and characteristics of the workpiece, generally has no stress suspension point, and the outer surface of the tubular workpiece cannot be contacted with a solid before the coating is cured, so the outer surface of the workpiece is suspended by a hanger, and the hanger is taken down after the coating is completely cured to take out the workpiece.

The most common tubular workpiece hangers and supports at present have three types:

the first method comprises the following steps: the workpiece is vertically suspended, the hanger penetrates through the bottom of the vertical workpiece along the axis direction of the workpiece, the bottom of the hanger is larger than the outer diameter of the workpiece, and the upper end of the hanger is suspended in a hanging ring mode and the like, so that the purpose of suspending the outer surface of the workpiece is achieved. And after the coating is cured, taking the hanger out of the center of the tubular workpiece.

And the second method comprises the following steps: the workpiece is vertically suspended, the hanger provides power through a pneumatic or mechanical device and the like, the inner wall of the workpiece is supported in an internal tensioning mode to form a certain friction force, and according to a formula, when the tensioning force is larger than a certain value, the friction force is larger than the gravity of the workpiece, and the tubular workpiece can be suspended in the air.

Above two kinds of modes, all need hang the work piece is vertical, and the work piece is often transported with the horizontal mode, consequently need rotate 90 and improve to a take the altitude with the work piece before the application, need rotate 90 again and move down take the altitude with the work piece after the application is accomplished, and the action is many, and the mechanism is complicated, and is inefficient, and the fault rate is high, and mode one is unfavorable for adopting automation equipment, and the poor stability of mode two easily appears the work piece phenomenon of dropping by oneself.

And the third is that: the workpiece moves horizontally, the equipment suspends the workpiece in the air in a mode of tightly pushing two ends, and the workpiece can be dismounted only after the coating of the workpiece is cured because the coating of the workpiece needs a long time to be cured, so that the production efficiency is low; and when the length change of the workpiece is large, the stroke of the two-head jacking mechanism is long to meet the requirement, the structure is complex, and the failure rate is high.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to at least one of the problems of the prior art or the related art.

Therefore, the utility model discloses an aim at provides a spraying hanger.

Another object of the utility model is to provide a spraying equipment.

In order to achieve the above object, the utility model discloses provide a spraying hanger in the technical scheme of the first aspect, include: the sleeve is provided with a plurality of open slots along the circumferential direction, the length of the sleeve is greater than that of the tubular workpiece, and the outer diameter of the sleeve is smaller than the inner diameter of the tubular workpiece; the jacking part is arranged in the sleeve; the tensioning mechanism is arranged in the sleeve and corresponds to the open slot, at least part of the tensioning mechanism can selectively extend out of the sleeve from the open slot or be accommodated in the sleeve, the tensioning mechanism is connected with the tightening part, and the tightening part moves towards the tensioning mechanism from two ends to enable at least part of the tensioning mechanism to extend out through the open slot, so that when the spraying hanger penetrates into the tubular workpiece, the part of the tensioning mechanism extending out of the open slot applies tensioning force to the inner wall of the tubular workpiece, and the tubular workpiece is fixed.

According to the utility model discloses a first aspect technical scheme, the spraying hanger includes sleeve pipe, the tight portion in top and straining device. The spraying hanging tool is kept to be integrally tubular through the sleeve, so that the spraying hanging tool can be conveniently inserted into or drawn out of a tubular workpiece; the sleeve is provided with a plurality of open slots along the circumferential direction, so that the interior of the sleeve is communicated with the exterior through the open slots to provide an extending channel for a tensioning mechanism in the spraying hanger; the length of the sleeve is greater than that of the tubular workpiece so as to ensure that the two ends of the sleeve can extend out of the two ends of the tubular workpiece after the sleeve penetrates into the tubular workpiece, so that the tubular workpiece can be horizontally placed conveniently, and the outer diameter of the sleeve is smaller than the inner diameter of the tubular workpiece so as to ensure that the sleeve can penetrate into the tubular workpiece. The jacking portion is arranged in the sleeve, so that the external jacking device can apply pressure to two ends of the tensioning mechanism through the jacking portion. The tensioning mechanism is arranged in the sleeve at a position corresponding to the open slot, and at least part of the tensioning mechanism can selectively extend out of the sleeve from the open slot or be retracted into the sleeve, so that when at least part of the tensioning mechanism extends out of the sleeve through the open slot, a tensioning force is applied to the tubular workpiece sleeved on the outer side of the sleeve. Specifically, the tensioning mechanism is connected with the tightening part, so that two ends of the tightening part move towards the tensioning mechanism to enable at least part of the tensioning mechanism to extend out of the sleeve pipe through the open slot, when the spraying hanger penetrates into the tubular workpiece, the part extending out of the open slot in the tensioning mechanism applies a tensioning force to the inner wall of the tubular workpiece, the tubular workpiece is fixed, the outer surface of the tubular workpiece is conveniently sprayed, the outer surface of the tubular workpiece is prevented from contacting other objects when the outer surface of the tubular workpiece is sprayed, and damage to a painted surface is avoided. In addition, the spraying hanging tool is convenient to convey, a simplified mechanism is used, the next tubular workpiece can be sprayed without waiting for the paint surface of the tubular workpiece to be completely solidified, and the spraying efficiency is high.

The number of the open grooves can be 4, and the open grooves are uniformly arranged along the circumferential direction of the sleeve, so that the tensioning mechanisms can apply tensioning forces to 4 directions of the inner wall of the tubular workpiece, and two adjacent tensioning forces form an included angle of 90 degrees, and the stability of the tubular workpiece during fixing is improved. Of course, the number of open slots may be other numbers that meet the conditions.

It is emphasized that the spraying hanger can be suitable for tubular workpieces with different lengths, the lengths of which are less than the length of the spraying hanger, the stroke of the jacking device does not need to be increased, and the applicability is strong. Specifically, when the spray coating device is matched with a spray coating device for batch production, the length of the spray coating hanger can be greater than the maximum length of the tubular workpiece applicable to the spray coating device, and the spray coating hanger can be used for tubular workpieces with all lengths within the maximum length range.

It can be understood that, tubular workpiece accomplishes the surface spraying back, need place certain time and could accomplish the finish solidification, through the utility model discloses a spraying hanger can end after accomplishing the spraying and apply the tensile force to tubular workpiece, carries out the spraying operation of next tubular workpiece, can not cause the finish damage of the tubular workpiece of having accomplished to be favorable to the batched spraying operation to spraying efficiency has been improved.

Additionally, the utility model provides an among the above-mentioned technical scheme spraying hanger can also have following additional technical characteristic:

in the above technical solution, the tightening part specifically includes: one end of the first top shaft extends into the sleeve and is connected with one end of the tensioning mechanism, one end of the second top shaft extends into the sleeve and is connected with the other end of the tensioning mechanism, one end of the first top shaft, which is far away from the tensioning mechanism, and one end of the second top shaft, which is far away from the tensioning mechanism, are both of a circular truncated cone structure, the diameter of the large-diameter end of the circular truncated cone structure is larger than the outer diameter of the sleeve, and the diameter of the small-diameter end of the circular truncated cone structure is smaller than the inner diameter of the sleeve; the first jacking shaft and the second jacking shaft are coaxially arranged and can move along the axial direction, so that at least part of the tensioning mechanism extends out of the opening groove and applies tensioning force to the inner wall of the tubular workpiece.

In the technical scheme, the first jacking shaft and the second jacking shaft are respectively connected with two ends of the tensioning mechanism and can move along the axial direction, so that the tensioning mechanism is stressed to deform through the opposite movement of the first jacking shaft and the second jacking shaft, and further part of the tensioning mechanism extends out of the open slot to apply tension to the inner wall of the tubular workpiece, and the tubular workpiece is fixed. Through the coaxial setting of first apical axis and second apical axis to prevent to straining device produce the torque, improve straining device's stability. Keep away from straining device's one end and second apical axis one end through injecing first apical axis and be round platform type structure, the diameter of the big footpath end of round platform type structure is greater than sheathed tube external diameter, the diameter of the footpath end of round platform type structure is less than sheathed tube internal diameter, increase the area of contact of tight device and first apical axis and second apical axis in top, so that outside tight device in top exerts pressure to first apical axis and second apical axis, accessible big footpath end offsets with sheathed tube tip simultaneously and carries on spacingly to first apical axis and second apical axis, prevent that first apical axis and/or second apical axis amount of movement from leading to breaking away from with tight device in top excessively greatly.

In the above technical solution, the tensioning mechanism specifically includes: one end of each first connecting piece is hinged with one end of the first jacking shaft extending into the sleeve; one end of each second connecting piece is hinged with one end of the second jacking shaft extending into the sleeve; the tubular workpiece fixing device comprises a plurality of supporting pieces, one end of each supporting piece is hinged to one end, far away from a first jacking shaft, of one first connecting piece, the other end of each supporting piece is hinged to one end, far away from a second jacking shaft, of one second connecting piece, the other end of each supporting piece is hinged to one end, far away from the second jacking shaft, of the other end of each supporting piece, so that the supporting pieces stretch out of corresponding open grooves when the first jacking shaft and the second jacking shaft move oppositely, tensioning force is applied to the inner wall of the tubular workpiece through the supporting pieces, fixing of the tubular workpiece is achieved, and the number of the first connecting pieces, the number of the.

In the technical scheme, the tensioning mechanism specifically comprises a plurality of first connecting pieces, a plurality of second connecting pieces and a plurality of supporting pieces, one end of each first connecting piece is hinged with one end of each first jacking shaft extending into the sleeve, one end of each second connecting piece is hinged with one end of each second jacking shaft extending into the sleeve, one end of each supporting piece is hinged with one end of each first connecting piece far away from the first jacking shaft, the other end of each supporting piece is hinged with one end of each first connecting piece far away from the second jacking shaft, so that the tensioning mechanism integrally forms a multi-link frame structure, and each hinged part can rotate relatively, therefore when the first jacking shaft and the second jacking shaft move relatively, axial pressures on two sides of the tensioning mechanism are applied, the first connecting pieces and the second connecting pieces of the tensioning mechanism rotate relative to the supporting pieces, and further the supporting pieces extend out of the spraying hanging tool from open slots under the pushing of the first connecting pieces and the second connecting pieces, the inner wall of the tubular workpiece outside the spraying hanging tool is tensioned by the supporting piece, so that the tubular workpiece is fixed, and the tensioning mechanism is simple in structure, easy to implement and convenient to operate. The quantity of the first connecting pieces, the quantity of the second connecting pieces and the quantity of the supporting pieces are the same as that of the open grooves, so that each supporting piece can be ensured to extend out of the corresponding open groove, and the tubular workpiece is prevented from being blocked from being fixed due to the fact that the supporting pieces extend out of the open grooves. Specifically, the number of the first connecting pieces, the number of the second connecting pieces and the number of the supporting pieces are the same as the number of the open grooves, and the first connecting pieces, the second connecting pieces and the supporting pieces are uniformly arranged along the circumferential direction of the sleeve, so that the tensioning mechanism can ensure that the tubular workpiece is fixed, the stability of the tubular workpiece is improved, and the structure of the tensioning mechanism can be simplified.

Further, the surface of each support member contacting the inner wall of the tubular workpiece can be provided with a flexible material to increase the friction force between the support member and the inner wall of the tubular workpiece, so that the tubular workpiece is fixed more firmly.

In the above technical scheme, the spraying hanger further comprises: and the positioning pieces are arranged on the inner wall of the sleeve to radially position the first jacking shaft and the second jacking shaft.

In this technical scheme, through locating a plurality of setting elements on the cover intraductal wall to radially fix a position first apical axis and second apical axis, in order to prevent that first apical axis and second apical axis from taking place radial displacement and with sleeve pipe direct contact, reduce the resistance of first apical axis and second apical axis removal in-process, thereby reduce wearing and tearing, improve the stability of spraying hanger.

In the technical scheme, the tensioning mechanism further comprises a resetting piece, two ends of the resetting piece are respectively connected with the first top shaft and the second top shaft, and the resetting piece has a tendency of enabling the first top shaft and the second top shaft to move back to back so that the tensioning mechanism can be retracted into the sleeve; the reset piece specifically comprises a guide shaft, a limiting rod and a reset spring, the two ends of the guide shaft are connected with the first ejecting shaft and the second ejecting shaft in a sliding mode, the reset spring is sleeved between the guide shaft and the limiting rod, the two ends of the reset spring are connected with the first ejecting shaft and the second ejecting shaft respectively, and the limiting rod is used for limiting the limit positions of the first ejecting shaft and the second ejecting shaft in opposite directions.

In this technical scheme, through being equipped with the piece that resets, and the both ends that reset the piece are connected with first apical axis and second apical axis respectively, need not the operation with the help of external mechanism, can realize resetting of first apical axis and second apical axis through the piece that resets, are convenient for to the reuse of spraying hanger, are favorable to improving the spraying material rate, reduce cost. Specifically, the reset piece comprises a guide shaft, a limiting rod and a reset spring, and the two ends of the guide shaft are connected with the first jacking shaft and the second jacking shaft in a sliding manner so as to guide the moving directions of the first jacking shaft and the second jacking shaft; the reset spring is sleeved between the guide shaft and the limiting rod, and two ends of the reset spring are respectively connected with the first jacking shaft and the second jacking shaft so as to push the first jacking shaft and the second jacking shaft to reset by utilizing the elasticity of the reset spring; the limit position of the first jacking shaft and the limit position of the second jacking shaft which move oppositely are limited by the limiting rod. It can be understood that if the tubular workpiece does not have a resetting piece, the first jacking shaft and the second jacking shaft need to be reset through an external device or manpower after one-time spraying is completed, the spraying hanger can be used at the position, continuous spraying operation is influenced, the spraying efficiency is low, and the cost is increased.

The utility model discloses second aspect technical scheme provides a spraying equipment, include: a spray coating hanger as in any one of the above first aspect solutions; the two ends of the spraying hanger are arranged on the conveying mechanism, and the spraying hanger can selectively penetrate into the tubular workpiece or be drawn out of the tubular workpiece; the spraying chamber is erected above the conveying mechanism, a feeding port and a discharging port are respectively arranged at two ends of the spraying chamber, and the spraying chamber is used for spraying the outer surface of the tubular workpiece and solidifying the paint surface; and the controller is respectively electrically connected with the conveying mechanism and the spraying chamber to control the operation of the conveying mechanism and the spraying chamber, wherein the spraying hanger penetrates into the tubular workpiece from a feeding port of the spraying chamber, and the spraying hanger is drawn out from the tubular workpiece from a discharging port of the spraying chamber.

According to the utility model discloses a second aspect technical scheme, spraying equipment, including transport mechanism, spray booth, controller and the spraying hanger of any one of the above-mentioned first aspect technical scheme. Through being equipped with transport mechanism, the both ends of spraying hanger are arranged in on transport mechanism, and the tubulose work piece cover is established with the spraying hanger outside to realize the conveying to tubulose work piece, and the tubulose work piece is in the level setting, has improved the stability in conveying and spraying process, has reduced the possibility that the tubulose work piece takes place to unusually drop. The surface spraying and paint surface curing are carried out on the tubular workpiece through a spraying chamber arranged above the conveying mechanism; the two ends of the spraying chamber are respectively provided with a feeding port and a discharging port, the tubular workpiece penetrates through the feeding port by arranging the spraying hanger, the tubular workpiece arranged on the conveying mechanism is conveyed into the spraying chamber from the feeding port, the tubular workpiece after spraying and paint surface curing is output from the discharging port, and the tubular workpiece is drawn out from the discharging port by the spraying hanger to realize discharging. Through being equipped with the controller, be connected with transport mechanism and spray booth electricity respectively to the operation of control transport mechanism and spray booth, thereby carry out accurate control to transport operation and spraying operation through the controller, be favorable to realizing automatic control, improve spraying efficiency. Wherein the electrical connection may be a wired connection or a wireless connection. The present solution should also have all the beneficial effects of the spraying hanger in any one of the above-mentioned first aspect technical solutions, which are not described herein again.

In the above technical solution, the spraying apparatus further includes: the jacking devices are arranged on two sides of the conveying mechanism in the spraying chamber and electrically connected with the controller, inward axial force is applied to two ends of a jacking portion of the spraying hanger through the jacking devices, so that the tensioning mechanism of the spraying hanger applies tensioning force to the inner wall of the tubular workpiece, and the tubular workpiece is fixed, wherein the jacking devices can drive the spraying hanger to rotate.

In the technical scheme, the jacking devices are arranged on two sides of the conveying mechanism in the spraying chamber, and apply inward axial force to two ends of the jacking part of the spraying hanger, so that the tensioning mechanism of the spraying hanger applies tensioning force to the inner wall of the tubular workpiece, and the tubular workpiece is fixed so as to be convenient for spraying. The jacking device drives the spraying hanging tool to rotate so as to drive the tubular workpiece to rotate, so that the outer surface of the tubular workpiece is completely positioned in the spraying range of the spraying machine, and the spraying machine can perform 360-degree spraying operation on the circumferential direction of the tubular workpiece.

In the above technical solution, the spray booth specifically includes: the reciprocating device is arranged above the conveying mechanism in the spraying chamber and can reciprocate between two sides of the conveying mechanism; and the spraying machine is arranged on the reciprocating device, and the controller is electrically connected with the reciprocating device and the spraying machine respectively.

In the technical scheme, the reciprocating device and the spraying machine arranged on the reciprocating device are arranged above the conveying mechanism in the spraying chamber to spray the tubular workpieces, the reciprocating device can reciprocate between two sides of the conveying mechanism to drive the spraying machine to reciprocate, so that the tubular workpieces can be sprayed in the axial direction, the tubular workpieces with different lengths can be completely and uniformly sprayed, and the spraying precision can be improved. The controller is arranged to be electrically connected with the reciprocating device and the spraying machine respectively so as to control the reciprocating device and the spraying machine, accurate control over jacking operation and moving spraying operation is achieved, and spraying precision is improved.

In the above technical solution, the spraying apparatus further includes: the first moving device is arranged on one side of the feeding port, a plurality of first rollers are arranged on the first moving device, and the spraying hanger is pressed and rotated through the plurality of first rollers, so that the spraying hanger penetrates into the tubular workpiece; the second moving device is arranged at the discharge port and is arranged on the same side as the first moving device, a plurality of second rollers are arranged on the second moving device, and the spraying hanger is pressed and rotated through the plurality of second rollers, so that the spraying hanger is drawn out of the tubular workpiece; the controller is electrically connected with the first moving device and the second moving device respectively.

In this technical scheme, through being equipped with first mobile device in one side of pan feeding mouth to the realization penetrates the spraying hanger in the tubular work piece, specifically, be equipped with a plurality of first running rollers on the first mobile device, compress tightly and rotate the spraying hanger from both sides through a plurality of first running rollers, in order to utilize the frictional force effect between running roller and the spraying hanger to make the spraying hanger take place axial displacement, and then penetrate the spraying hanger in the tubular tool. Through being equipped with the second mobile device in discharge gate department, in order to realize taking out the spraying hanger in the tubulose work piece, specifically, be equipped with a plurality of second running rollers on the second mobile device, the one end that stretches out the tubulose work piece through a plurality of second running rollers to the spraying hanger compresses tightly and rotates, utilize the frictional force effect between running roller and the spraying hanger to make the spraying hanger take place axial displacement, and then take out in by the tubulose work piece, the second mobile device locate with first mobile device with one side, the distance that can shorten pipe form work piece and return the pan feeding mouth and carry out reuse, be favorable to raising the efficiency. The controller is electrically connected with the first moving device and the second moving device respectively so as to accurately control the penetrating or drawing-out operation of the spraying hanging tool and the returning operation of the tubular tool.

In the technical scheme, the spraying equipment further comprises a returning mechanism which is arranged on one side of the conveying mechanism side by side, the returning mechanism is electrically connected with the controller, and the returning direction of the returning mechanism is opposite to the conveying direction of the conveying mechanism, so that the spraying hanging tool separated from the tubular workpiece is returned to the feeding port; the softening pad is arranged below the discharge port, and the tubular workpiece falls on the softening pad after being separated from the spraying hanging tool. The controller is electrically connected with the first moving device, the second moving device and the loopback mechanism respectively.

In the technical scheme, the returning mechanisms are arranged on one side of the conveying mechanism side by side, and the returning direction of the returning mechanisms is opposite to the conveying direction of the conveying mechanism, so that the spraying hanging tool separated from the tubular workpiece after spraying and paint surface curing is conveyed to the feeding port for reuse, the waiting time of the tubular workpiece at the feeding port is shortened, the continuity of the conveying process and the spraying process is favorably maintained, and the spraying efficiency is further improved. The softening pad is arranged below the discharge port, so that the tubular workpiece is separated from the spraying hanging tool and then falls on the softening pad to play a role in buffering the tubular workpiece, and the damage to the paint surface caused by the fact that the tubular workpiece directly falls on a hard object is avoided. It will be appreciated that although the tubular workpiece at the discharge opening is subjected to finish curing, damage to the finish can still occur when the tubular workpiece collides with a hard object. The softening pad is made of materials including but not limited to rubber, sponge and silica gel.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, or may be learned by practice of the invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 shows a cross-sectional view of a spray coating hanger according to an embodiment of the present invention;

fig. 2 shows a cross-sectional view of a spray coating hanger according to an embodiment of the present invention;

fig. 3 shows a cross-sectional view of a spray coating hanger according to an embodiment of the present invention;

fig. 4 shows a cross-sectional view of a spray coating hanger according to an embodiment of the present invention;

figure 5 shows a schematic view of a spray coating device according to an embodiment of the invention;

figure 6 shows a schematic view of a spray coating device according to an embodiment of the present invention;

fig. 7 shows a schematic view of a first mobile device according to an embodiment of the invention;

fig. 8 shows a schematic view of a second mobile device according to an embodiment of the invention;

fig. 9 shows a flow diagram of a spray coating method according to an embodiment of the invention;

fig. 10 shows a flow diagram of a spray coating method according to an embodiment of the invention;

fig. 11 shows a flow chart of a spray coating method according to an embodiment of the invention.

Wherein, the correspondence between the reference numbers and the component names in fig. 1 to 8 is:

1 spraying hanger, 11 sleeves, 111 open slots, 12 jacking parts, 121 first jacking shafts, 122 second jacking shafts, 13 tensioning mechanisms, 131 first connecting pieces, 132 second connecting pieces, 133 supporting pieces, 14 positioning plates, 15 resetting pieces, 151 resetting springs, 152 guide shafts, 153 limiting rods, 2 conveying mechanisms, 3 spraying chambers, 31 feeding ports, 32 discharging ports, 33 reciprocating devices, 34 spraying machines, 41 first moving devices, 411 first pressing wheels, 412 first driving wheels, 42 second moving devices, 421 second pressing wheels, 422 second driving wheels, 43 returning mechanisms and 5 tubular workpieces.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more clearly understood, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

A painting hanger, a painting apparatus and a painting method according to some embodiments of the present invention are described below with reference to fig. 1 to 11.

Example one

The present embodiment provides a spray coating hanger 1 for a tubular workpiece 5. As shown in fig. 1, the painting hanger 1 includes a sleeve 11, a tightening portion 12, and a tensioning mechanism 13. The length of the sleeve 11 is greater than that of the tubular workpiece 5, the outer diameter of the sleeve 11 is smaller than the inner diameter of the tubular workpiece 5, and the sleeve 11 is provided with a plurality of open grooves 111 along the circumferential direction. The tightening part 12 is provided in the sleeve 11. The tensioning mechanism 13 is disposed in the casing 11 at a position corresponding to the opening groove 111, and a part of the tensioning mechanism 13 can selectively extend out of the casing 11 from the opening groove 111 or be retracted into the casing 11. Specifically, the tensioning mechanism 13 is connected to the tightening part 12, and when two ends of the tightening part 12 move towards the tensioning mechanism 13, a part of the tensioning mechanism 13 can extend out of the sleeve 11 through the open slot 111, so that when the spraying hanger 1 penetrates into the tubular workpiece 5, the extended tensioning mechanism 13 applies a tensioning force to the inner wall of the tubular workpiece 5, thereby fixing the tubular workpiece 5. When the tightening part 12 moves away from the tightening mechanism 13, the tightening mechanism 13 can be retracted into the casing 11 through the opening groove 111.

Example two

The present embodiment provides a spray coating hanger 1 for a tubular workpiece 5. As shown in fig. 2, the spraying hanger 1 comprises a sleeve 11, a tightening part 12 and a tensioning mechanism 13, wherein the middle part of the sleeve 11 is provided with 4 open grooves 111 along the circumferential direction, the orientation of two adjacent open grooves 111 is 90 degrees, and the orientation of two opposite open grooves 111 is 180 degrees. The sleeve 11 is internally provided with 4 positioning plates 14 along the radial direction, the positioning plates 14 are symmetrically arranged with the open grooves 111, the center of each positioning plate 14 is provided with a through hole, and the center through holes of the 4 positioning plates 14 are coaxial. The jacking device comprises a first jacking shaft 121 and a second jacking shaft 122 which are coaxially arranged, the first jacking shaft 121 and the second jacking shaft 122 respectively extend into the sleeve 11 from two ends of the sleeve 11 and respectively penetrate through holes in the positioning plates 14 on two sides of the opening groove 111, so that the first jacking shaft 121 and the second jacking shaft 122 are radially positioned through the positioning plates 14; both the first top shaft 121 and the second top shaft 122 are movable in the axial direction of the sleeve 11; the end of the first top shaft 121 and the end of the second top shaft 122 far away from the tensioning mechanism 13 are both provided with a circular truncated cone structure for contacting with an external tightening device, the diameters of the two ends of the circular truncated cone structure along the axial direction are different, wherein the diameter of the large-diameter end of the circular truncated cone structure is larger than the outer diameter of the sleeve 11, and the diameter between the small-diameter ends of the circular truncated cone structure is smaller than the inner diameter of the sleeve 11. The tensioning mechanism 13 is disposed corresponding to the opening slot 111 in the sleeve 11, specifically, the tensioning mechanism 13 is formed by hinging 4 first connecting pieces 131, 4 supporting pieces 133 and 4 second connecting pieces 132, wherein the 4 supporting pieces 133 are disposed in the middle, each supporting piece 133 corresponds to one opening slot 111, two ends of each supporting piece 133 are respectively hinged to one first connecting piece 131 and one second connecting piece 132, one end of each first connecting piece 131, which is far away from the supporting piece 133, is hinged to one end of the first top shaft 121, which faces the tensioning mechanism 13, and each second connecting piece 132 is hinged to one end of the second top shaft 122, which faces the tensioning mechanism 13, so that the first connecting piece 131, the supporting pieces 133, the second connecting pieces 132, and the first top shaft 121 and the second top shaft 122 are rotatably connected through a hinge structure.

When the spraying device is used, the spraying hanger 1 penetrates into the tubular workpiece 5, two ends of the spraying hanger 1 extend out from two ends of the tubular workpiece 5, as shown in fig. 3, when one end of the first top shaft 121, which is far away from the tensioning mechanism 13, and one end of the second top shaft 122, which is far away from the tensioning mechanism 13, are simultaneously subjected to an inward axial force applied by an external jacking device, the first top shaft 121 and the second top shaft 122 move oppositely to extrude two ends of the tensioning mechanism 13, the first connecting piece 131, the second connecting piece 132 and the supporting piece 133 of the tensioning mechanism 13 are displaced through the hinge structure, the supporting piece 133 extends out of the sleeve 11 from the open slot 111, and a tensioning force is applied to the inner wall of the tubular workpiece 5 through the supporting piece 133, so that the tubular workpiece 5 is fixed, and the outer surface of the tubular workpiece 5 is sprayed.

EXAMPLE III

The embodiment provides a spraying hanger 1, which is further improved on the basis of the second embodiment. As shown in fig. 4, the spraying hanger 1 further includes a reset member 15, and the reset member 15 specifically includes a reset spring 151, a guide shaft 152 and a limit rod 153. The two ends of the guide shaft 152 are slidably connected with the first top shaft 121 and the second top shaft, the limiting rod 153 is arranged between the first top shaft 121 and the second top shaft 122, the reset spring 151 is sleeved outside the limiting rod 153 and is arranged between the lower periphery and the limiting rod 153, and the two ends of the reset spring 151 are connected with the first top shaft 121 and the second top shaft 122. When the first top shaft 121 and the second top shaft 122 move oppositely along the axial direction of the sleeve 11 under the action of external force, the first top shaft 121 and the second top shaft 122 slide inwards relative to the guide shaft 152, the tensioning mechanism 13 deforms, the supporting piece 133 extends outwards from the opening groove 111, and the axial movement of the first top shaft 121 and the second top shaft 122 is limited through the limiting rod 153; at this time, the return spring 151 is in a compressed state, and has a tendency to move the second top shaft 122 and the second top shaft 122 back to back. When the external force is released, the first top shaft 121 and the second top shaft 122 move back to back under the elastic force of the return spring 151, and the support 133 of the tensioning mechanism 13 is retracted into the sleeve 11.

Example four

In the present embodiment, there is provided a painting apparatus, as shown in fig. 5 and 6, which includes a conveyance mechanism 2, a painting booth 3, a controller, and the painting hanger 1 of any one of the first to third embodiments described above. The conveying mechanism 2 is used for conveying tubular tools, the spraying chamber 3 is erected above the conveying mechanism 2, a feeding port 31 and a discharging port 32 are respectively arranged at two ends of the spraying chamber 3, the spraying hanger 1 penetrates into the tubular workpiece 5 from the feeding port 31 of the spraying chamber 3 and is conveyed into the spraying chamber 3 through the conveying mechanism 2, and outer surface spraying and paint surface curing are carried out on the tubular workpiece 5 through the spraying chamber 3. The tubular workpiece 5 which finishes the outer surface spraying and the paint surface curing leaves the spraying chamber 3 from the discharge port 32 of the spraying chamber 3, and the spraying hanger 1 is drawn out from the tubular workpiece 5 from the discharge port 32 of the spraying chamber 3 to finish the discharging. The controller is electrically connected to the conveyor 2 and the spray booth 3 to control the operation of the conveyor 2 and the spray booth 3.

EXAMPLE five

In the present embodiment, a spray coating apparatus is provided, and as shown in fig. 6, the spray coating apparatus includes a conveying mechanism 2, a spray coating chamber 3, a tightening device, a controller, and the spray coating hanger 1 according to any one of the first to third embodiments. The conveying mechanism 2 is used for conveying tubular tools, the spraying chamber 3 is erected above the conveying mechanism 2, a feeding port 31 and a discharging port 32 are respectively arranged at two ends of the spraying chamber 3, and the spraying hanger 1 penetrates into the tubular workpiece 5 from the feeding port 31 of the spraying chamber 3 and is pulled out of the tubular workpiece 5 from the discharging port 32 of the spraying chamber 3. The tubular workpiece 5 is conveyed into the spraying chamber 3 by the conveying mechanism 2, and the tubular workpiece 5 is subjected to outer surface spraying and paint surface curing through the spraying chamber 3. Specifically, two sides of the conveying mechanism 2 in the spraying chamber 3 are provided with jacking devices, and inward axial force is applied to two ends of a jacking part 12 of the spraying hanger 1 through the jacking devices to push a tensioning mechanism 13 of the spraying hanger 1 to apply tensioning force to the inner wall of the tubular workpiece 5 so as to fix the tubular workpiece 5; the spraying hanging tool 1 is driven to rotate through an external jacking device, and then the tubular workpiece 5 is driven to rotate, so that the outer surface of the tubular workpiece 5 can be conveniently sprayed in the 360-degree circumferential direction. The spraying chamber 3 comprises a reciprocating device and a spraying machine 34, the reciprocating device is arranged above the conveying mechanism 2 in the spraying chamber 3, the spraying machine 34 is arranged on the reciprocating device, and the spraying machine 34 is driven by the reciprocating device to reciprocate between two sides of the conveying mechanism 2 to finish the spraying of the tubular workpiece 5 in the axial direction. After the surface spraying and paint surface curing operations of the tubular workpiece 5 are finished, the jacking device finishes jacking operations on the spraying hanging tool 1, the tubular workpiece 5 leaves the spraying chamber 3 from the discharge port 32 of the spraying chamber 3, and the spraying hanging tool 1 is drawn out from the tubular workpiece 5 to finish unloading. The controller is electrically connected to the conveyor mechanism 2, the puller, the shuttle, and the applicator 34, respectively, to control the operation of the conveyor mechanism 2, the puller, the shuttle, and the applicator 34.

EXAMPLE six

In the present embodiment, there is provided a painting apparatus, as shown in fig. 6, which includes a conveying mechanism 2, a painting booth 3, a first moving device 41, a second moving device 42, a return mechanism 43, a controller, and the painting hanger 1 according to any one of the first to third embodiments. The conveying mechanism 2 is used for conveying tubular tools, the spraying chamber 3 is erected above the conveying mechanism 2, a feeding port 31 and a discharging port 32 are respectively arranged at two ends of the spraying chamber 3, the spraying hanger 1 penetrates into the tubular workpiece 5 from the feeding port 31 of the spraying chamber 3 and is conveyed into the spraying chamber 3 through the conveying mechanism 2, and outer surface spraying and paint surface curing are carried out on the tubular workpiece 5 through the spraying chamber 3. The tubular workpiece 5 which finishes the outer surface spraying and the paint surface curing leaves the spraying chamber 3 from the discharge port 32 of the spraying chamber 3, the spraying hanger 1 is pulled out from the tubular workpiece 5 from the discharge port 32 of the spraying chamber 3, and the tubular workpiece 5 falls on the softening pad arranged below the discharge port 32 to finish the discharging.

Specifically, the first moving device 41 of the spraying apparatus is disposed at one side of the material inlet 31, and the second moving device 42 is disposed at the material outlet 32. As shown in fig. 7, the first moving device 41 is provided with 3 first rollers, the 3 first rollers are respectively disposed at two sides of the axis of the tubular workpiece 5, wherein two first rollers are first driving wheels 412 disposed below the axis of the tubular workpiece 5, the other first roller is a first pressing wheel 411 disposed above the axis of the tubular workpiece 5, and a certain distance is present between the first driving wheels 412 and the first pressing wheel 411 to form a penetration channel, and the penetration channel corresponds to the axis of the tubular workpiece 5. The spraying hanger 1 moves along with the conveying mechanism 2, when one end of the spraying hanger 1 extends into a penetrating channel of the first moving device 41, the first pressing wheel 411 moves downwards, so that the upper end and the lower end of the spraying hanger 1 are pressed by the first pressing wheel 411, the first driving wheel 412 starts to rotate, the spraying hanger 1 axially moves towards the tubular workpiece 5 through the friction force between the first roller and the spraying hanger 1, and the spraying hanger 1 penetrates into the tubular workpiece 5.

As shown in fig. 8, the second moving device 42 of the spraying apparatus is provided with 3 second rollers, the 3 second rollers are respectively disposed at two sides of the axis of the tubular workpiece 5, wherein the two second rollers are second driving wheels 422 disposed below the axis of the tubular workpiece 5, the other second roller is a second pressing wheel 421 disposed above the axis of the tubular workpiece 5, and a certain distance exists between the second driving wheels 422 and the second pressing wheel 421 to form a drawing channel, and the drawing channel corresponds to the axis of the tubular workpiece 5. The spraying hanger 1 moves along with the conveying mechanism 2, when one end of the spraying hanger 1 extends into a drawing channel of the second moving device 42, the second pressing wheel 421 moves downwards, so that the upper end and the lower end of the spraying hanger 1 are pressed by the second pressing wheel 421, the second driving wheel 422 starts to rotate, the spraying hanger 1 axially moves back to the tubular workpiece 5 through the friction force between the second roller and the spraying hanger 1, and the spraying hanger 1 is drawn out from the tubular workpiece 5.

The back-feeding mechanism 43 is arranged at one side of the conveying mechanism 2 side by side, and the back-feeding mechanism 43 is opposite to the conveying direction of the conveying mechanism 2, so that the spraying hanger 1 drawn out from the discharge port 32 can be fed back to the feeding port 31 through the back-feeding mechanism 43, and the spraying hanger 1 can be recycled.

The controller is electrically connected to the transfer mechanism 2, the painting booth 3, the first moving device 41, the second moving device 42, and the return mechanism 43, respectively, to control the operations of the transfer mechanism 2, the painting booth 3, the first moving device 41, the second moving device 42, and the return mechanism 43.

EXAMPLE seven

In the present embodiment, there is provided a painting apparatus, as shown in fig. 6, the painting apparatus includes a conveying mechanism 2, a painting booth 3, a first moving device 41, a second moving device 42, an auxiliary moving device, a return mechanism 43 controller, and the painting hanger 1 of any one of the first to third embodiments. The conveying mechanism 2 is used for conveying tubular tools, the spraying chamber 3 is erected above the conveying mechanism 2, a feeding port 31 and a discharging port 32 are respectively arranged at two ends of the spraying chamber 3, the spraying hanger 1 penetrates into the tubular workpiece 5 from the feeding port 31 of the spraying chamber 3 and is conveyed into the spraying chamber 3 through the conveying mechanism 2, and outer surface spraying and paint surface curing are carried out on the tubular workpiece 5 through the spraying chamber 3. The tubular workpiece 5 which finishes the outer surface spraying and the paint surface curing leaves the spraying chamber 3 from the discharge port 32 of the spraying chamber 3, the spraying hanger 1 is pulled out from the tubular workpiece 5 from the discharge port 32 of the spraying chamber 3, and the tubular workpiece 5 falls on the softening pad arranged below the discharge port 32 to finish the discharging.

Specifically, the first moving device 41 in the spraying apparatus is disposed at one side of the material inlet 31, the second moving device 42 is disposed at the material outlet 32, and the material inlet 31 and the material outlet 32 are respectively provided with an auxiliary moving device. As shown in fig. 7, the first moving device 41 is provided with 3 first rollers, the 3 first rollers are respectively disposed at two sides of the axis of the tubular workpiece 5, wherein two first rollers are first driving wheels 412 disposed below the axis of the tubular workpiece 5, the other first roller is a first pressing wheel 411 disposed above the axis of the tubular workpiece 5, and a certain distance is present between the first driving wheels 412 and the first pressing wheel 411 to form a penetration channel, and the penetration channel corresponds to the axis of the tubular workpiece 5. One end of the spraying hanger 1 is driven by the auxiliary moving device to extend into the penetrating channel, the first pressing wheel 411 moves downwards, the upper end and the lower end of the spraying hanger 1 are pressed by the first pressing wheel 411, the first driving wheel 412 starts to rotate, the spraying hanger 1 moves axially towards the tubular workpiece 5 through the friction force between the first roller and the spraying hanger 1, and therefore the spraying hanger 1 penetrates into the tubular workpiece 5.

As shown in fig. 8, the second moving device 42 of the spraying apparatus is provided with 3 second rollers, the 3 second rollers are respectively disposed at two sides of the axis of the tubular workpiece 5, wherein the two second rollers are second driving wheels 422 disposed below the axis of the tubular workpiece 5, the other second roller is a second pressing wheel 421 disposed above the axis of the tubular workpiece 5, and a certain distance exists between the second driving wheels 422 and the second pressing wheel 421 to form a drawing channel, and the drawing channel corresponds to the axis of the tubular workpiece 5. One end of the spraying hanger 1 is driven to extend into the drawing channel through the auxiliary moving device, the second pressing wheel 421 moves downwards, the upper end and the lower end of the spraying hanger 1 are pressed by the second pressing wheel 421, the second driving wheel 422 starts to rotate, the spraying hanger 1 moves in the axial direction back to the tubular workpiece 5 through the friction force between the second roller and the spraying hanger 1, and therefore the spraying hanger 1 is drawn out from the tubular workpiece 5.

The controller is electrically connected to the transfer mechanism 2, the painting chamber 3, the first moving device 41, the second moving device 42, the auxiliary moving device, and the return mechanism 43, respectively, to control the operations of the transfer mechanism 2, the painting chamber 3, the first moving device 41, the second moving device 42, the auxiliary moving device, and the return mechanism 43.

Example eight

In the present embodiment, a spray coating device is provided, as shown in fig. 5 and 6, the spray coating device includes a conveying mechanism 2, a spray coating chamber 3, a jacking device, a first moving device 41, a second moving device 42, an auxiliary moving device, a returning mechanism 43, a controller, and the spray coating hanger 1 of any one of the first to third embodiments. The conveying mechanism 2 is used for conveying tubular tools, the spraying chamber 3 is erected above the conveying mechanism 2, a feeding port 31 and a discharging port 32 are respectively arranged at two ends of the spraying chamber 3, and the spraying hanger 1 penetrates into the tubular workpiece 5 from the feeding port 31 of the spraying chamber 3 and is pulled out of the tubular workpiece 5 from the discharging port 32 of the spraying chamber 3. The tubular workpiece 5 is conveyed into the spraying chamber 3 by the conveying mechanism 2, and the tubular workpiece 5 is subjected to outer surface spraying and paint surface curing through the spraying chamber 3. Specifically, two sides of the conveying mechanism 2 in the spraying chamber 3 are provided with jacking devices, and inward axial force is applied to two ends of a jacking part 12 of the spraying hanger 1 through the jacking devices to push a tensioning mechanism 13 of the spraying hanger 1 to apply tensioning force to the inner wall of the tubular workpiece 5 so as to fix the tubular workpiece 5; the spraying hanging tool 1 is driven to rotate through an external jacking device, and then the tubular workpiece 5 is driven to rotate, so that the outer surface of the tubular workpiece 5 can be conveniently sprayed in the 360-degree circumferential direction. The spraying chamber 3 comprises a reciprocating device and a spraying machine 34, the reciprocating device is arranged above the conveying mechanism 2 in the spraying chamber 3, the spraying machine 34 is arranged on the reciprocating device, and the spraying machine 34 is driven by the reciprocating device to reciprocate between two sides of the conveying mechanism 2 to finish the spraying of the tubular workpiece 5 in the axial direction. After the surface spraying and paint surface curing operations of the tubular workpiece 5 are completed, the jacking device finishes jacking operations on the spraying hanging tool 1, the tubular workpiece 5 leaves the spraying chamber 3 from the discharge port 32 of the spraying chamber 3, the spraying hanging tool 1 is drawn out from the tubular workpiece 5, and the tubular workpiece 5 falls on a softening pad arranged below the discharge port 32 to finish unloading.

The first moving device 41 of the spraying equipment is arranged at one side of the material inlet 31, the second moving device 42 is arranged at the material outlet 32, and the material inlet 31 and the material outlet 32 are respectively provided with an auxiliary moving device. As shown in fig. 7, the first moving device 41 is provided with 3 first rollers, the 3 first rollers are respectively disposed at two sides of the axis of the tubular workpiece 5, wherein two first rollers are first driving wheels 412 disposed below the axis of the tubular workpiece 5, the other first roller is a first pressing wheel 411 disposed above the axis of the tubular workpiece 5, and a certain distance is present between the first driving wheels 412 and the first pressing wheel 411 to form a penetration channel, and the penetration channel corresponds to the axis of the tubular workpiece 5. One end of the spraying hanger 1 is driven by the auxiliary moving device to extend into the penetrating channel, the first pressing wheel 411 moves downwards, the upper end and the lower end of the spraying hanger 1 are pressed by the first pressing wheel 411, the first driving wheel 412 starts to rotate, the spraying hanger 1 moves axially towards the tubular workpiece 5 through the friction force between the first roller and the spraying hanger 1, and therefore the spraying hanger 1 penetrates into the tubular workpiece 5.

The controller is electrically connected to the transfer mechanism 2, the shuttle, the applicator 34, the first moving device 41, the second moving device 42, the auxiliary moving device, and the return mechanism 43, respectively, to control the operations of the transfer mechanism 2, the shuttle, the applicator 34, the first moving device 41, the second moving device 42, the auxiliary moving device, and the return mechanism 43.

Example nine

In the present embodiment, there is provided a spraying method, as shown in fig. 9, for use in the spraying apparatus of any one of the fourth to eighth embodiments. The spraying method comprises the following steps:

s102, placing the tubular workpiece on a conveying mechanism in spraying equipment through a spraying hanger;

step S104, conveying the tubular workpiece into a spraying chamber of spraying equipment through a conveying mechanism;

and S106, finishing the outer surface spraying and paint surface curing of the tubular workpiece in the spraying chamber.

In this embodiment, step S102 is performed to place the tubular workpiece on the conveying mechanism as required for spraying, and to complete the preparation state before spraying, and to wait for conveying to the next working area. The tubular workpiece is brought into the painting area by step S104. In step S106, the spraying operation and the paint surface curing of the tubular workpiece are completed. By means of the spraying method, the tubular workpiece can be fixed from the inside of the tubular workpiece through the spraying equipment in any one of the fourth embodiment to the eighth embodiment, the paint surface of the outer surface of the tubular workpiece cannot be affected, the spraying method can be suitable for tubular workpieces of different lengths, continuous spraying can be achieved, the structure of the spraying equipment is simplified, spraying efficiency is effectively improved, and cost reduction is facilitated.

Example ten

In the present embodiment, there is provided a spraying method, as shown in fig. 10, for use in the spraying apparatus of any one of the fourth to eighth embodiments. The spraying method comprises the following steps:

step S202, a spraying hanger is inserted into a tubular workpiece through a first moving device arranged at a feeding port in spraying equipment, and two ends of the spraying hanger extend out of the tubular workpiece and are placed on a conveying mechanism;

step S204, conveying the tubular workpiece into a spraying chamber of spraying equipment through a conveying mechanism;

step S206, applying inward axial force to two ends of a spraying hanger through a jacking device in the spraying equipment, and enabling a tensioning device of the spraying hanger to apply tensioning force to the inner wall of the tubular workpiece to fix the tubular workpiece;

step S208, driving the tubular workpiece to rotate through the jacking device;

step S210, spraying the tubular workpiece by a spraying machine in a spraying chamber;

step S212, stopping the rotation of the jacking device and applying inward axial force to two ends of the spraying hanging tool;

and step S214, curing the paint surface of the tubular workpiece in the spraying chamber.

In this embodiment, in step S202, a first moving device in the spraying apparatus penetrates a spraying hanger into a tubular workpiece to prepare for fixing the tubular workpiece, and the first moving device is disposed at a feeding port of the spraying apparatus, so that the tubular workpiece completes the penetration operation of the spraying hanger at the feeding port, thereby reducing a transmission stroke and improving efficiency; the tubular workpiece extends out of the two ends of the spraying hanging tool and is arranged on the conveying mechanism, so that the tubular workpiece is arranged on the conveying mechanism through the spraying hanging tool, and the tubular workpiece is not in contact with the conveying mechanism, and the damage to the paint surface caused by the tubular workpiece in the spraying and paint surface curing processes can be effectively avoided. Through the step S206, the tightening device in the spraying apparatus applies an inward axial force to the brightness of the spraying hanger, so that the tensioning mechanism of the spraying hanger extends out of the sleeve and applies a tensioning force to the inner wall of the tubular workpiece to fix the tubular workpiece for spraying operation, thereby effectively avoiding clamping the outer surface of the tubular workpiece to prevent the paint surface from being damaged. Through step S208, the rotation of the tightening device drives the spraying hanger to rotate, so as to drive the tubular workpiece to rotate, so that the outer surface of the tubular workpiece is completely within the spraying range of the spraying machine, and the spraying machine can perform 360-degree spraying operation on the tubular workpiece in the circumferential direction. Through step S210, the tubular workpiece is sprayed, and the outer surface of the tubular workpiece can be sprayed completely and uniformly due to the rotation of the tubular workpiece itself and the reciprocating movement of the spraying machine along the axial direction of the tubular workpiece. Through the step S212, the tubular hanger stops rotating, the spraying hanger finishes applying the tension to the tubular workpiece, at the moment, the jacking device can enter the spraying link of the next tubular workpiece, the paint surface of the tubular workpiece does not need to be cured, the continuous operation of the spraying operation can be realized, and the spraying efficiency is effectively improved. Through step S214, the paint surface on the outer surface of the tubular workpiece is not easy to fall off or be damaged, wherein the paint surface curing can be completed by baking and spraying a curing agent, or by other paint surface curing methods.

EXAMPLE eleven

In the present embodiment, there is provided a spraying method, as shown in fig. 11, for use in the spraying apparatus of any one of the fourth to eighth embodiments. The spraying method comprises the following steps:

step S302, placing the tubular workpiece on a conveying mechanism in spraying equipment through a spraying hanger;

step S304, conveying the tubular workpiece into a spraying chamber of spraying equipment through a conveying mechanism;

s306, finishing outer surface spraying and paint surface curing of the tubular workpiece in a spraying chamber;

step S308, conveying the tubular workpiece to a discharge port of the spraying equipment through a conveying mechanism;

step S310, drawing out the spraying hanging tool from the tubular workpiece through a second moving device in the spraying equipment;

step S312, the spraying hanging tool is returned to the material inlet through a returning mechanism in the spraying equipment.

In this embodiment, after the tubular workpiece is subjected to the outer surface spraying and paint surface curing operation, the tubular workpiece subjected to the paint surface curing enters a processing station to be removed in step S308; in step S310, the spraying hanger in the tubular workpiece is moved to the second moving device, and the spraying hanger is drawn out by the second moving device, so that the tubular workpiece is separated from the spraying hanger, and the tubular workpiece falls into the finished product area. The second moving device draws out the spraying hanging tool and then places the spraying hanging tool on a returning mechanism in the spraying equipment. Through step S312, the returning mechanism returns the spraying hanger to the feeding port to be reused, so that the spraying hanger is in a recycling state, waiting time at the feeding port is reduced, and working efficiency is improved.

Above combine the figure to explain in detail the technical scheme of the utility model, can not cause the damage to the surface finish of tubulose work piece during the spraying, be applicable to the tubulose work piece of different length, the suitability is strong, is favorable to realizing continuous spraying, simplifies spraying equipment and improves spraying efficiency.

In the present application, the terms "first", "second", "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more unless expressly limited otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", "front", "back", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or unit indicated must have a specific direction, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present specification, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A spray coating hanger for tubular workpieces, comprising:

the sleeve is provided with a plurality of open grooves along the circumferential direction, the length of the sleeve is greater than that of the tubular workpiece, and the outer diameter of the sleeve is smaller than the inner diameter of the tubular workpiece;

the jacking part is arranged in the sleeve;

straining device locates in the cover pipe with the position that the open slot corresponds, at least part straining device selectively by the open slot stretches out to outside the cover pipe or income in the cover pipe, straining device with the tight portion in top is connected, through the tight portion in top is faced by both ends straining device removes and makes at least part straining device passes through the open slot stretches out, with the spraying hanger penetrates during the tubular workpiece, through straining device stretches out the part of open slot is right the tensile force is applyed to the inner wall of tubular workpiece, and the realization is right tubular workpiece's is fixed.

2. The spray coating hanger of claim 1 wherein said tightening portion comprises:

one end of the first top shaft extends into the sleeve and is connected with one end of the tensioning mechanism,

one end of the second top shaft extends into the sleeve and is connected with the other end of the tensioning mechanism,

the end, far away from the tensioning mechanism, of the first jacking shaft and the end, far away from the tensioning mechanism, of the second jacking shaft are both of a circular truncated cone structure, the diameter of the large-diameter end of the circular truncated cone structure is larger than the outer diameter of the sleeve, and the diameter of the small-diameter end of the circular truncated cone structure is smaller than the inner diameter of the sleeve;

the first jacking shaft and the second jacking shaft are coaxially arranged and can move along the axial direction, so that at least part of the tensioning mechanism extends out of the opening groove and applies tensioning force to the inner wall of the tubular workpiece.

3. The spray coating hanger of claim 2 wherein said tensioning mechanism comprises in particular:

one end of each first connecting piece is hinged with one end of the first jacking shaft extending into the sleeve;

one end of each second connecting piece is hinged with one end of the second top shaft extending into the sleeve;

the tubular workpiece fixing device comprises a plurality of supporting pieces, one end of each supporting piece is hinged with one end, far away from the first jacking shaft, of one first connecting piece, the other end of each supporting piece is hinged with one end, far away from the second jacking shaft, of one second connecting piece, so that when the first jacking shaft and the second jacking shaft move oppositely, the supporting pieces extend out of the corresponding open grooves, and tension is applied to the inner wall of the tubular workpiece through the supporting pieces to fix the tubular workpiece,

the number of the first connecting pieces, the number of the second connecting pieces and the number of the supporting pieces are the same as the number of the open grooves.

4. The spray coating hanger of claim 3 further comprising:

and the positioning pieces are arranged on the inner wall of the sleeve to radially position the first jacking shaft and the second jacking shaft.

5. The spray coating hanger of claim 3 further comprising:

the two ends of the resetting piece are respectively connected with the first top shaft and the second top shaft, and the resetting piece has the tendency that the first top shaft and the second top shaft move back to enable the tensioning mechanism to be retracted into the sleeve;

the reset piece specifically comprises a guide shaft, a limiting rod and a reset spring, the two ends of the guide shaft are connected with the first jacking shaft and the second jacking shaft in a sliding mode, the reset spring is sleeved between the guide shaft and the limiting rod, the two ends of the reset spring are respectively connected with the first jacking shaft and the second jacking shaft, and the limiting rod is used for limiting the limit positions of the first jacking shaft and the second jacking shaft in opposite directions.

6. A spray coating device, comprising:

the spray coating hanger of any one of the preceding claims 1 to 5;

the two ends of the spraying hanging tool are arranged on the conveying mechanism, and the tubular workpiece is sleeved on the outer side of the spraying hanging tool;

the spraying chamber is erected above the conveying mechanism, a feeding port and a discharging port are respectively arranged at two ends of the spraying chamber, and the outer surface of the tubular workpiece is sprayed and the paint surface is solidified through the spraying chamber;

and the controller is electrically connected with the conveying mechanism and the spraying chamber respectively so as to control the operation of the conveying mechanism and the spraying chamber.

7. The spray coating device of claim 6 further comprising:

the tight device in top is located transport mechanism both sides in the spray booth, the tight device in top with the controller electricity is connected, through the tight device in top is right inwards axial force is applyed at the both ends of the tight portion in top of spraying hanger, makes the straining device of spraying hanger is right the tensile force is applyed to the inner wall of tubulose work piece, and the realization is right the fixed of tubulose work piece, wherein, the tight device in top can rotate.

8. A spraying device according to claim 7, characterized in that the spraying booth comprises in particular:

the reciprocating device is arranged above the conveying mechanism in the spraying chamber and can reciprocate between two sides of the conveying mechanism;

a spraying machine arranged on the reciprocating device,

wherein the controller is electrically connected with the reciprocating device and the spraying machine respectively.

9. The spray coating device of claim 6 further comprising:

the first moving device is arranged on one side of the feeding port, a plurality of first rollers are arranged on the first moving device, and the spraying hanger is pressed and rotated through the plurality of first rollers, so that the spraying hanger penetrates into the tubular workpiece;

the second moving device is arranged at the discharge port and is arranged on the same side as the first moving device, a plurality of second rollers are arranged on the second moving device, and the spraying hanger is pressed and rotated through the plurality of second rollers, so that the spraying hanger is pulled out of the tubular workpiece;

the controller is electrically connected with the first moving device and the second moving device respectively.

10. The spray coating device of claim 9 further comprising:

the back conveying mechanism is arranged on one side of the conveying mechanism in parallel, the back conveying mechanism is electrically connected with the controller, and the back conveying direction of the back conveying mechanism is opposite to the conveying direction of the conveying mechanism, so that the spraying hanging tool separated from the tubular workpiece is returned to the feeding port;

the softening pad is arranged below the discharge port, and the tubular workpiece falls on the softening pad after being separated from the spraying hanging tool.