CN109550671B - Motorcycle frame coating process - Google Patents
Motorcycle frame coating process Download PDFInfo
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- CN109550671B CN109550671B CN201811642347.0A CN201811642347A CN109550671B CN 109550671 B CN109550671 B CN 109550671B CN 201811642347 A CN201811642347 A CN 201811642347A CN 109550671 B CN109550671 B CN 109550671B
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- spraying
- frame
- cleaning
- fixedly connected
- long handle
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- 238000000576 coating method Methods 0.000 title claims abstract description 33
- 238000005507 spraying Methods 0.000 claims abstract description 130
- 238000004140 cleaning Methods 0.000 claims abstract description 58
- 238000003466 welding Methods 0.000 claims abstract description 33
- 239000011248 coating agent Substances 0.000 claims abstract description 21
- 238000001035 drying Methods 0.000 claims abstract description 20
- 239000000428 dust Substances 0.000 claims abstract description 19
- 238000005422 blasting Methods 0.000 claims abstract description 10
- 238000005498 polishing Methods 0.000 claims abstract description 7
- 230000003749 cleanliness Effects 0.000 claims abstract description 5
- 230000007246 mechanism Effects 0.000 claims description 20
- 239000003973 paint Substances 0.000 claims description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 12
- 238000004804 winding Methods 0.000 claims description 10
- 229910052786 argon Inorganic materials 0.000 claims description 6
- 238000001125 extrusion Methods 0.000 claims description 4
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- 238000000227 grinding Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- 230000036961 partial effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000004891 communication Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 14
- 230000008569 process Effects 0.000 abstract description 11
- 239000007921 spray Substances 0.000 description 13
- 238000010422 painting Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005202 decontamination Methods 0.000 description 1
- 230000003588 decontaminative effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004021 metal welding Methods 0.000 description 1
- -1 mirror surfaces Substances 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0254—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/12—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by mechanical means
-
- B08B1/10—
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K19/00—Cycle frames
Abstract
The invention relates to processing equipment of a motorcycle frame, and particularly discloses a motorcycle frame coating process, which comprises the steps of assembling, polishing, cleaning, spraying, drying and the like, wherein a welding mode is selected for assembling; selecting a shot blasting mode for polishing; the requirement of clean cleanliness is Sa1.5-Sa1.9; before spraying, the frame needs to be cleaned for the second time, and then spraying is carried out immediately; the spraying opening is ensured to be vertical to the spraying surface and the distance is kept unchanged during spraying; and when drying, the drying box is selected for drying. This scheme of adoption has solved the problem that the coating quality is not good that causes on the frame is fallen to the raise dust in the spraying process.
Description
Technical Field
The invention relates to processing equipment of a motorcycle frame, and particularly discloses a coating process of the motorcycle frame.
Background
In a car factory, after welding of a frame and a car shell is completed (sometimes manual repair is carried out), painting is carried out in the next procedure. The spray gun needs to be adjusted before painting, namely, the spray gun and related equipment are cleaned, whether the spray shape of the spray gun is symmetrical or not is checked, and the atomization particle size distribution is uniform; when painting, the spray gun must be kept perpendicular to the surface of the workpiece, otherwise the sprayed paint film is not uniform. However, in the actual production and processing process, because the shape of the frame is difficult to unify, no unified spraying equipment for spraying the frame is available, so that the current spraying work is manually operated by workers, and the following problems exist: 1) the manual spraying tests the technique and experience of workers, the workers must keep the distance between the spray gun and the spraying surface, meanwhile, the spray gun is ensured to be vertical to the spraying surface, the moving speed is required to be uniform, and otherwise, the condition of uneven paint film occurs; 2) even if too much ordinary spray is inhaled, the paint can cause damage to human bodies, and the paint contains harmful substances, so that the health of workers who work in spraying for a long time can be greatly threatened; 3) the peripheral surface of the frame is required to be sprayed, if a spray gun is inverted to spray the coating from bottom to top to spray the lower surface of the frame, the threat to workers is great, the spray gun is difficult to ensure to be vertical to the surface to be sprayed, and after the upper surface is sprayed, the frame is turned over and the lower surface is sprayed, so that the condition that half of the coating is dried and the other half of the coating is sprayed easily occurs, and the coating is layered, so that the coating quality is influenced; 4) before spraying, the workpiece to be sprayed is required to be cleaned, and when the frame is sprayed after manual cleaning, raised dust in the air easily drops to cause adverse effects on the quality of a paint film.
Disclosure of Invention
The invention aims to provide a frame coating process which is more uniform in coating and avoids poor spraying quality caused by falling of flying dust onto a frame in a spraying process.
In order to achieve the above purpose, the basic scheme of the invention is as follows: step 1, assembling: welding the pipe or the plate into the shape of the required frame according to an engineering drawing by adopting a flat welding mode, and detecting each welding part by adopting an impact mode;
and step 5, drying: and (3) placing the frame into a drying box, wherein the drying temperature is 152-178 ℃, and the drying time is 15-18 hours.
The principle and the advantage of the scheme are as follows: according to the scheme, the frame is cleaned for the second time before spraying, so that the condition that the coating quality is affected due to the fact that the frame is adhered to raise dust in a workshop in the process of waiting for spraying is avoided, the coating is more uniform, and the adhesion effect is better;
this scheme can throw ball processing to the frame before carrying out the spraying, has both promoted the roughness of frame for coating adhesion more easily during the spraying has increased the stress of welding seam position on the frame again, makes the frame connection more firm.
Further, the detection mode in the step 1 is to use a cam with the eccentricity of 250 to impact the frame for 5-6 times.
Because the frame is the supporting part of the whole motorcycle and needs to bear the vibration of the engine, the frame has certain requirements on strength and rigidity and certain requirements on the anti-collision capacity; therefore, the frame can enter the operation of the next process only if the frame without cracks, fractures or desoldering phenomena at each welding part is impacted by the cam, so that the probability of problems after the frame is put into use is reduced.
Further, the diameter of the shot blasting used in the step 2 is 0.15 mm.
The roughness of the frame is increased through shot blasting, so that the adhesiveness of the coating is better when the spraying is carried out at the back; meanwhile, the roughness of the frame after shot blasting processing of 0.15mm is small, so that the outer surface of the frame is smoother, and the appearance and the hand feeling in the use process are good.
Further, after the secondary cleaning in the step 4, the time difference between the cleaning and the spraying is less than 5 s.
Because the raise dust in the air is difficult to remove completely, in order to avoid the not good problem of coating quality that the raise dust caused on falling the frame during spraying, reduce clean and the time difference between the spraying can reduce the raise dust that falls on the frame to promote the quality of coating.
Further, in the step 1, argon arc welding is selected when the racks are assembled.
The protection of argon gas avoids the oxidation of metal at the welding seam, thereby improving the quality of the welding seam; moreover, the argon arc welding can form a protective cover for preventing oxidation at the welding position, and the welding position is separated from workers, so that the condition that harmful gas generated by electric welding is absorbed when the workers perform electric welding is avoided, and the construction danger of the workers is reduced.
Further, when the secondary cleaning is performed in the step 4, cleaning sponge is selected for cleaning.
The cleaning sponge can effectively clean and accumulate various dirt, can better play a good decontamination effect on hard and smooth surfaces (such as ceramics, mirror surfaces, glass and stainless steel), can effectively remove the raised dust on the outer surface of the frame, and can also clean some liquid stains falling onto the frame in the construction process, thereby ensuring the cleanliness of the frame during other spraying.
Drawings
FIG. 1 is a main sectional view of a spray coating apparatus employed in an embodiment of the spray coating process for a motorcycle frame of the present invention;
FIG. 2 is a left side view of the cleaning sleeve of FIG. 1;
FIG. 3 is a left cross-sectional view of the painting portion of FIG. 1, showing the extension deployed to wrap the painting portion around the frame;
FIG. 4 is a left sectional view of the air cavity of FIG. 1;
FIG. 5 is a front cross-sectional view of the drive mechanism in an embodiment of the present invention;
FIG. 6 is a left side view of FIG. 5, primarily showing the positional relationship of the runner and the snap fastener.
Detailed Description
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a frame 1, a cleaning sleeve 2, a spraying part 3, an extension joint 4, an air bag 5, a spraying opening 6, a connecting part 7, a hose 8, a valve plate 9, a connecting rod 10, an air cavity 11, an air cavity piston 12, a pressure spring 13, a hinge rod 14, a hinge shaft 15, a sliding groove 16, a winding belt 17, a snap fastener 18, a universal joint 19, an air cylinder 20, an air cylinder piston 21, a first cavity 22, a piston rod 23, a long handle 24, a driving rod 25 and an air cylinder 26.
Example one
The motorcycle frame coating process comprises the following steps:
As shown in fig. 3, the spraying mechanism includes the semicircular spraying portion 3 that sets up with clean cover 2 is coaxial, the distance of the interior anchor ring of spraying portion 3 and frame 1 surface is 26cm, the both ends of spraying portion 3 slide and are equipped with the extension that is used for increasing the 3 radians of spraying portion, spraying portion 3 all adopts the cavity design and communicates each other with the extension, be equipped with the gasbag 5 that is used for driving the extension in spraying portion 3 and the extension, it has the spraying mouth 6 to open on the lateral wall that spraying portion 3 and extension are close to frame 1, spraying mouth 6 evenly distributed is in a week of frame 1, install the pressure valve on the spraying mouth 6. The extension section in this embodiment is telescopic, and includes a plurality of extension sections 4 that are mutually sealed and slidably connected, the air bag 5 is fixedly connected with one section of the extension section 4 far away from the spraying part 3, and a tension spring (not shown in the figure) for folding the air bag 5 is arranged in the air bag 5. As shown in fig. 1, a connecting part 7 is fixedly connected to the right side of the spraying part 3, the connecting part 7 is hollow and is communicated with the spraying part 3, and a hose 8 for introducing paint is communicated with the right end of the connecting part 7; be equipped with the valve that is used for controlling the connected state of hose 8 and spraying portion 3 in connecting portion 7, the top of clean cover 2 and the bottom sliding connection of connecting portion 7, and the valve is controlled by clean cover 2, specifically sets up as shown in fig. 1: the valve plate 9 is movably connected with the inner horizontal surface of the connecting portion 7, a valve plate tension spring for closing the valve is fixedly connected with the right side of the valve plate 9 and the right end of the connecting portion 7, a connecting rod 10 is fixedly connected with the left side of the valve plate 9, the connecting rod 10 is connected with the right side wall of the spraying portion 3 in a sealing and sliding mode, and the left side of the cleaning sleeve 2 is welded with the connecting rod 10.
As shown in fig. 1, the lower end of the long handle 24 is fixedly connected with an air chamber 11 for inflating the airbag 5, and the lower end of the air chamber 11 is fixedly connected with the connecting part 7, wherein the structure of the air chamber 11 is shown in fig. 4: along the axial sliding connection of long handle 24 in air cavity 11 has air cavity piston 12, the upper end fixedly connected with actuating lever 25 of air cavity piston 12, the vertical sliding connection of actuating lever 25 is in long handle 24, and fixedly connected with is used for making air cavity piston 12 keep away from the elastic component of spraying portion 3 between the bottom of air cavity 11 and air cavity piston 12, and pressure spring 13 is selected for use to this embodiment. As shown in fig. 5, the upper end of the long handle 24 is provided with a driving mechanism for driving the driving rod 25 to slide, and the specific structure is as follows: the top end of the driving rod 25 is designed into a wedge shape; the driving mechanism is two hinged rods 14, a hinged shaft 15 is vertically arranged in the long handle 24 along the radial direction, one ends of the two hinged rods 14, which are positioned in the long handle 24, are rotatably connected with the hinged shaft 15, and wedge surfaces used for being matched with the driving rods 25 are arranged at one ends of the hinged rods 14, which are positioned in the long handle 24; the long handle 24 is provided with sliding grooves 16 on both sides along the axial direction, and the free ends of the two hinge rods 14 respectively penetrate out of the long handle 24 through one sliding groove 16.
In this embodiment, a buckle for limiting abnormal rotation of the hinge shaft 15 is disposed at one end of the sliding slot 16 close to the spraying part 3, the buckle includes a winding belt 17 and a snap 18 for fixing the winding belt 17, the snap 18 is fixedly disposed at two ends of the winding belt 17, the position of the buckle is as shown in fig. 6, the buckle is located at a position above the lower end of the sliding slot 16, so that after the hinge rod 14 is rotated downward to a desired position, the winding belt 17 can be wound around the long handle 24 and then fixed by the snap 18, thereby preventing abnormal upward rotation of the hinge rod 14.
The paint spraying device further comprises an extrusion mechanism for providing pressure for the paint, the extrusion mechanism comprises an air cylinder 20, an air cylinder piston 21 is connected to the water in the air cylinder 20 in a sliding manner, in the embodiment, an air cylinder 26 is fixedly connected to the left side of the air cylinder piston 21, specifically, the left side of the air cylinder piston 21 is fixedly connected with a piston rod of the air cylinder 26, the moving speed of the air cylinder 26 is 30m/s, a first cavity 22 for containing the paint is formed by the right ends of the air cylinder piston 21 and the air cylinder 20, and the first cavity 22 is communicated with the hose 8; a piston rod 23 is fixedly connected to one side of the air cylinder piston 21 far away from the coating, a universal joint 19 is fixedly connected to the free end of the piston rod 23, and one end of the long handle 24 far away from the spraying part 3 is fixedly connected with the universal joint 19.
And spraying equipment with symmetrical spraying shape of a spraying port and uniform atomized particle size distribution of the coating is selected for spraying the frame. Before spraying, the dust on the frame to be sprayed needs to be cleaned for the second time. The spraying equipment of this scheme is equipped with cleaning sleeve 2 coaxially on the right side (taking fig. 1 as the benchmark) of spraying portion 3, so this scheme is that after cleaning sleeve 2 cleaned frame 1 and carried out the secondary and clean, spraying portion 3 begins to carry out the spraying to frame 1 promptly, can effectively avoid the raise dust to fall on frame 1 to the quality of filming lead to the condition of harmful effects. Therefore, when the spraying device is used, the cleaning sleeve 2 is directly clamped on the frame 1, then the hinged rod 14 shown in fig. 5 is pulled downwards to enable the driving rod 25 to move downwards, the driving rod 25 moves downwards to extrude the air cavity piston 12 shown in fig. 4 and drive the air cavity piston 12 to move downwards, the air cavity piston 12 moves downwards to extrude air in the air cavity 11 to extrude the air in the air cavity 11 into the air bag 5, the air bag 5 expands to extrude the extension section 4, the extension section extends downwards to extend the spraying part 3 to the shape surrounding the frame 1 in a circle, and the purpose that the spraying openings 6 are uniformly distributed on the frame 1 in a circle is achieved. Meanwhile, the winding belt 17 can be wound on the long handle 24 at a position above the hinge rod 14, and the winding belt 17 is fixed by the snap fasteners, so that the condition that the hinge rod 14 abnormally slides in the sliding groove 16 in the spraying process is avoided.
The actuating cylinder 26 moves the cylinder piston 21 to the right, and the cylinder piston 21 moves to the right to press the paint in the first cavity 22 into the connecting portion 7. Meanwhile, when the cylinder piston 21 moves rightwards, the piston rod 23 is driven to move rightwards, so that the long handle 24 is driven to move rightwards, and the long handle 24 drives the connecting part 7 to move rightwards; when the connecting part 7 starts to move rightwards, the cleaning sleeve 2 cannot move rightwards along with the connecting part 7 due to friction of the cleaning sleeve 2 and the frame 1, so that the valve plate 9 can move leftwards relative to the connecting part 7 to enable the connecting part 7 to be communicated with the spraying part 3, paint can enter the spraying part 3 from the connecting part 7, and the purpose of spraying the paint on the frame 1 is achieved; after the spraying part 3 moves to the right to be abutted against the cleaning sleeve 2, the spraying part 3 can push the cleaning sleeve 2 to move to the right together when moving to the right continuously, thereby realizing the purpose of spraying the frame 1. Because the cleaning sleeve 2 is connected to the frame 1 in a sliding manner, and the spraying part 3 and the cleaning sleeve 2 can only axially slide, the spraying part 3 can always keep the same distance with the frame 1 in the sliding process, and the situation that the distance between the spraying opening 6 and the frame 1 is constantly changed can not occur; the cleaning sleeve 2 and the spraying part 3 are coaxially arranged, and the cleaning sleeve 2 is arranged on the right side of the spraying part 3 (taking figure 1 as a reference), so that after the cleaning sleeve 2 cleans the frame 1, the spraying part 3 starts to spray the frame 1, and the scheme avoids the condition that raised dust falls on the frame 1 to cause adverse effect on the quality of a coating film; meanwhile, as soon as the air cylinder piston 21 stops moving, the valve plate tension spring drives the valve plate 9 to move rightwards to close the valve, so that the problem of paint waste caused by continuous spraying of the paint by the spraying part 3 is avoided; moreover, because the universal joint 19 is arranged on the long handle 24, even if the frame 1 has a part which is bent, the movement of the piston can drive the spraying part 3 to continuously slide, so that the situation of blocking cannot occur, and the spraying part 3 of the scheme can also synchronously turn, so that the spraying part 3 can still keep a vertical state with the surface to be sprayed of the frame 1 at the bent part; meanwhile, when the scheme meets the position where two parts are crossed on the frame 1, the rotation amplitude of the hinge rod 14 can be controlled, when the air pressure in the air bag 5 is reduced, the air bag 5 can contract inwards under the action of the tension spring so as to retract a part of the extension joint 4 upwards, and a notch for the frame 1 to pass through is exposed below the spraying part 3.
And step 5, drying: and (3) placing the frame in a drying box, wherein the drying temperature is 152 ℃, and the drying time is 15 hours.
Example two
The difference between the embodiment and the first embodiment is that in the step 2, shot blasting with the diameter of 0.24mm is selected to polish the frame; in the step 3, the distance between the inner ring surface of the spraying part 3 and the outer surface of the frame 1 is 29cm, and the moving speed of the air cylinder 26 is 25 m/s; in the step 5, the drying temperature is 160 ℃, and the drying time is 18 hours.
EXAMPLE III
The difference between the embodiment and the first embodiment is that in the step 2, shot blasting with the diameter of 0.19mm is selected to polish the frame; in step 3, the distance between the inner ring surface of the spraying part 3 and the outer surface of the frame 1 is 27cm, and the moving speed of the air cylinder 26 is 28 m/s; in the step 5, the drying temperature is 178 ℃, and the drying time is 17 hours.
Claims (6)
1. The motorcycle frame coating process is characterized by comprising the following steps:
step 1, assembling: welding the pipe or the plate into the shape of the required frame according to an engineering drawing by adopting a flat welding mode, and detecting each welding part by adopting an impact mode;
step 2, polishing the frame: selecting shot blasting with the shot diameter of 0.15-0.24 mm to polish the frame, and if necessary, polishing partial welding seams to ensure that the surfaces of the welding seams are smooth;
step 3, cleaning the frame: removing impurities such as grinding dust, flying dust and the like attached to the frame and other substances coated or adhered to the frame during the previous processing, and detecting the cleanliness of the frame to be Sa1.5-Sa1.9;
step 4, spraying: preparing a spraying device, wherein the spraying device comprises a cleaning mechanism, a spraying mechanism and a long handle for controlling the spraying mechanism, the cleaning mechanism comprises an arc-shaped cleaning sleeve clamped on a frame, a cleaning layer for cleaning the frame is arranged on the cleaning sleeve, the cleaning layer is arranged on one side, close to the frame, of the cleaning sleeve, and cleaning sponge is adopted as the cleaning layer; the spraying mechanism comprises a semi-annular spraying part which is coaxial with the cleaning sleeve, extension sections for increasing the radian of the spraying part are arranged at two ends of the spraying part in a sliding manner, the extension sections can be telescopic, the spraying part and the extension sections are both hollow and are communicated with each other, air bags for driving the extension sections are arranged in the spraying part and the extension sections, spraying ports are formed in the side walls, close to the frame, of the spraying part and the extension sections, the spraying ports are uniformly distributed on the periphery of the frame, and pressure valves are mounted on the spraying ports; the spraying part is fixedly connected with the air bag, the air bag is fixedly connected with one section of the extending section far away from the spraying part, a tension spring used for drawing the air bag in is arranged in the air bag, the right side of the spraying part is fixedly connected with a connecting part, the connecting part is in a hollow design and is communicated with the spraying part, and the right end of the connecting part is also communicated with a hose used for guiding in paint; a valve used for controlling the communication state of the hose and the spraying part is arranged in the connecting part, the valve is controlled by a cleaning sleeve, the top of the cleaning sleeve is in sliding connection with the bottom of the connecting part, a valve plate is horizontally and slidably connected in the connecting part, a valve plate tension spring for closing the valve is fixedly connected to the right side of the valve plate and the right end of the connecting part, a connecting rod is fixedly connected to the left side of the valve plate, the connecting rod is in sealing sliding connection with the right side wall of the spraying part, and the left side of the cleaning sleeve is welded with the connecting rod; the lower end of the long handle is fixedly connected with an air cavity used for inflating the air bag, the lower end of the air cavity is fixedly connected with the connecting part, an air cavity piston is connected in the air cavity in a sliding mode along the axial direction of the long handle, the upper end of the air cavity piston is fixedly connected with a driving rod, the driving rod is vertically connected in the long handle in a sliding mode, an elastic part used for enabling the air cavity piston to be far away from the spraying part is fixedly connected between the bottom of the air cavity and the air cavity piston, and the elastic part is a pressure spring; the upper end of the long handle is provided with a driving mechanism for driving the driving rod to slide, the driving mechanism is two hinged rods, a hinged shaft is vertically arranged in the long handle along the radial direction, one ends of the two hinged rods, which are positioned in the long handle, are rotatably connected with the hinged shaft, and one ends of the hinged rods, which are positioned in the long handle, are provided with wedge surfaces for matching with the driving rod; the two sides of the long handle are provided with sliding chutes along the axial direction, and the free ends of the two hinged rods respectively penetrate out of the long handle through one sliding chute; a buckle is arranged at one end of the sliding chute close to the spraying part, the buckle comprises a winding belt and a snap fastener for fixing the winding belt, and the snap fastener is fixedly arranged at two ends of the winding belt; before spraying, the dust on the frame to be sprayed needs to be cleaned for the second time; the spraying opening is always vertical to the surface to be sprayed, the distance between the spraying opening and the surface to be sprayed of the frame is 26-29 cm, and the moving speed of the spraying opening is controlled to be 25-30 m/s;
the spraying equipment also comprises an extrusion mechanism used for providing pressure for the coating, the extrusion mechanism comprises an air cylinder, an air cylinder piston is horizontally and slidably connected in the air cylinder, the left side of the air cylinder piston is fixedly connected with an air cylinder, a first cavity used for containing the coating is formed by the air cylinder piston and the right end of the air cylinder, and the first cavity is communicated with the hose; a piston rod is fixedly connected to one side, away from the coating, of the air cylinder piston, a universal joint is fixedly connected to the free end of the piston rod, and one end, away from the spraying part, of the long handle is fixedly connected with the universal joint;
and step 5, drying: and (3) placing the frame into a drying box, wherein the drying temperature is 152-178 ℃, and the drying time is 15-18 hours.
2. A motorcycle frame coating process according to claim 1, characterized in that: the detection mode in the step 1 is to use a cam with 250 eccentricity to impact the frame for 5-6 times.
3. A motorcycle frame coating process according to claim 2, characterized in that: the diameter of the shot blasting used in the step 2 is 0.15 mm.
4. A motorcycle frame coating process according to claim 3, characterized in that: and after the secondary cleaning in the step 4, the time difference between cleaning and spraying is less than 5 s.
5. A motorcycle frame coating process according to claim 1, characterized in that: in the step 1, argon arc welding is selected when the racks are assembled.
6. A motorcycle frame coating process according to claim 5, characterized in that: and 4, when secondary cleaning is carried out in the step 4, cleaning sponge is selected for cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642347.0A CN109550671B (en) | 2018-12-29 | 2018-12-29 | Motorcycle frame coating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811642347.0A CN109550671B (en) | 2018-12-29 | 2018-12-29 | Motorcycle frame coating process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109550671A CN109550671A (en) | 2019-04-02 |
| CN109550671B true CN109550671B (en) | 2021-08-10 |
Family
ID=65871970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811642347.0A Active CN109550671B (en) | 2018-12-29 | 2018-12-29 | Motorcycle frame coating process |
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| CN101274318B (en) * | 2007-03-28 | 2010-05-26 | 南车青岛四方机车车辆股份有限公司 | Technological method for processing vehicle frame |
| CN205570616U (en) * | 2016-05-04 | 2016-09-14 | 东北林业大学 | Electronic trunk whitewash device |
| CN108187951A (en) * | 2018-03-31 | 2018-06-22 | 广东知识城运营服务有限公司 | A kind of paint spraying equipment |
| CN108543643B (en) * | 2018-04-20 | 2019-12-24 | 深圳市华星光电技术有限公司 | Gluing device |
| CN108554673A (en) * | 2018-07-17 | 2018-09-21 | 重庆旺豹商贸有限公司 | Motorcycle parts superficial treatment system |
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