JPS6320066A - Method and device for coating liquid composition for film-forming - Google Patents

Abstract

PURPOSE:To automatically form a high-quality coat without defective coating by dipping a basket contg. a work in a liq. to coat the word, shaking off the liq., sending air to predry the work, and vibrating the basket. CONSTITUTION:The works such as bolts and nuts are put in the basket, the works are coated in a dip coating device 27, and the excessive liq. coating composition is shaken off. The succeeding predrying part D and a vibrating part E are provided with a hot air circulating furnace 153, and the furnace is extended to the inlet sides of a primary conveyor 155 and a secondary conveyor 156. A blowing device is provided below the predrying part D, and the liq. coating composition deposited on the work after being shaken is half-dried. A vibrator is provided to the vibrating part E, the basket is repeatedly vibrated to change the contact condition of the work in the basket, and the liq. is forcedly gluidized. Defective coating is thus prevented, and a high-quality coat is efficiently formed.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a surface treatment process for imparting corrosion resistance to metal parts such as bolts, nuts, clips, etc. by dip coating.

(Prior technology) Conventionally, zinc plating has been the mainstream method for imparting corrosion resistance to metal parts, but recently, as the problem of pollution in the plating industry has become more serious, the chain-resistance performance has also increased. There was a demand for improvement over the years, and a new anti-rust treatment agent, a water-soluble inorganic composition, was developed under the trade name Dacrotized (Diamond Shil/manufactured by Murotsuku Co., Ltd.). Dacrotized is a coating composition liquid consisting of anhydrous chromic acid, boric acid, silicic acid, etc., a glycol-based reducing agent, and special zinc powder in the form of flakes, as well as additives and deionized water. It is used after mixing and adjusting the viscosity.
This 11! As shown in FIG. 23, the process of surface treating the workpiece with the treatment solution of the I composition includes (1) a degreasing process;
(2) Blast polishing process, (3) 1st dip coating, drip removal process, and (4) 1st baking process, which includes a curing process. The process is repeated, and in the dip coating and drip removal processes of this surface treatment process, the workpiece is placed in a mesh basket, and the coating apparatus 250 has a dipping tank 250a and a rotating tank 250b.
By the way 1! After immersing the basket in the liquid, the basket is rotated by the rotating mechanism 25.
0b to centrifugally shake off the excess adhering liquid and remove the drops. Next, in the curing process, the baking is heated and hardened in a hot air circulation furnace 251, so the workpieces are manually spread widely on a mesh tray or net conveyor 252 to prevent them from coming into contact with each other and causing defects. It is fed into the circulation furnace 251, and first in the preheating zone 253, it is heated to about 1
After removing moisture by heating in an atmosphere at 50° C. for several minutes, the metal is heated in a final firing zone 254 until the metal surface temperature reaches about 300° C., hardened, and then air cooled. Then, in the second step, the workpiece is transferred from the tray to the basket,
The coating device 250 is used again to process I! ! ! After being immersed in the liquid and shaken off, the workpieces are again spread on a tray and conveyed to the hot air oven 251 by the conveyor 252, where they are baked (hardened) and the surface treatment is completed.

(Problem to be solved) As mentioned above, surface treatment of workpieces such as bolts, nuts, clips, etc. is carried out, but recently, especially in the automatic medium industry, the interior of the engine room has been kept in an extremely orderly manner. Therefore, there is a high demand for the quality of the surface treatment of, for example, clips for clamping and disposing wire harnesses, piping, etc. Therefore, in the conventional surface treatment process, the first and second dip coating steps are required.

The drip removal process J3 and baking are intended to eliminate poor coating through the curing process, but these do not result in liquid accumulation &E.

There is a problem in that it is difficult to ensure quality because coating defects such as scratches due to contact with the work surface U have not been sufficiently eliminated, and in addition, the above-mentioned dip coating and drip removal processes are done manually. The problem is that it is extremely inefficient because it has to be transferred from a tray or a net conveyor to a basket.

(Means for Solving the Problems) The present invention has been made to solve the above-mentioned conventional problems, and the first object is to provide a coating that can significantly reduce coating defects and improve quality. provide a method. The second purpose is to provide a coating device that can efficiently perform surface treatment by automatically performing each process without requiring human intervention until the surface treatment is completed after the workpiece is placed in the basket. In order to achieve both of these objectives, the present invention is configured with the following requirements.

That is, in order to achieve the first purpose, a basket containing a workpiece is immersed in the coating composition solution, and the basket 1- is rotated to shake off and remove the excess coating composition solution applied to the workpiece. There is a pre-drying process in which the excess coating composition liquid is shaken off during hardening in a hot air circulating oven, a pre-drying process in which air is blown onto the workpiece in the basket to partially dry the same wave, and the basket is repeatedly vibrated. The present invention includes a vibration process in which the contact state of the workpiece in the basket is changed by giving a wave, and the wave is forced to flow.

In addition, in order to achieve the second purpose, a basket containing workpieces is installed at the entrance side of a hot air circulation furnace, which has a conveyor that moves intermittently by arranging the primary conveyor path and the secondary conveyor path side by side. '#1 A dipping coating device in which first and second dipping coating parts are arranged side by side for dipping coating in the coating composition solution, and dipping coating in the first and second dipping coating parts 11 and applying excess coating to the workpiece. A shaker machine JR is provided with a first shaker and a second shaker for shaking off and removing the deposited coating composition liquid by rotating a basket, and a shaker with a first shaker installed in parallel with the conveyor at a portion extending from the inlet side of the circulation furnace. - A secondary drying section and a first and second vibrating section are arranged, and the basket on the first conveyor path is connected to the second conveyor of the dip coating device from the exit side of the circulation furnace. An exit side traverser for transferring onto a circulating conveyor connected to the front part of the next immersion coating section, and an exit side of the second conveyor path are connected to the front part of the first immersion coating section of the d coating equipment. A feeding conveyor V connected to a feeding conveyor for conveying baskets is provided to form a circulation path, and baskets of the first and second immersion coating sections and the first and second shake-out sections are provided on the inlet side of the circulation furnace. and an entrance side traverser that collectively grips the waiting baskets and transfers them to the next process;
- The secondary vibration section is configured to include a vibration device that repeatedly vibrates the basket at the same location.

(Example) Next, an example of the present invention Hδ will be described with reference to the drawings. Note that this apparatus is configured as a series of cyclical steps from the painting step after polishing the workpiece to the completion of the secondary baking and hardening step. In other words, this example d is a hot air circulation furnace 1
The circulation furnace 153 is provided with a primary conveyor 155 and a secondary conveyor 156 that intermittently transport the baskets 1 in parallel. On the side, there is a primary conveyor 155 and a primary dip coating section 81. The primary shaking section C1, the primary pre-drying section D1, and the primary vibrating section E1 are sequentially arranged at predetermined intervals, and each of the primary sections is disposed on the population side of the secondary conveyor 156. Similarly, a second dip coating section B2, a second shake-off section C2, a second pre-drying section D2, and a second imaging section E2 are sequentially arranged in parallel with the second conveyor 15G. Further, the primary dip coating section B1 is connected to the workpiece supply section A by a supply conveyor 26. Further, an exit side 1-rubber 159 is disposed on the outlet side of the circulation furnace 153, and the traverser 159 is connected to a circulation conveyor 187 and a primary conveyor 15 disposed up to the front part of the second dip coating section B2.
5 are connected and arranged. In addition, the secondary conveyor 156
The outlet side of the feed conveyor 188 is disposed in the feed section F provided on the feed section A side and is connected to the feed conveyor 26.
are connected to form a series of circulation routes. Each part will be explained below. Before explaining each part, the basket 1 for transporting workpieces will be explained. This basket 1 consists of an outer frame 2 having a predetermined diameter, and an inner frame 3 formed in the shape of a truncated cone in the center of the basket 1. The sides are connected radially as shown in the figure by support pieces 4, and a predetermined mesh of gold WJ5 or the like is pasted on the inner periphery to form a roughly donut-shaped volume capable of storing a predetermined amount of workpieces, and a truncated conical shape. A grip portion 6 is integrally provided at the center of the top surface.

Reference numeral A denotes the above-mentioned work supply section, and the supply section A is composed of a table lifter 7 and a work feeder 21. This table lifter 7 is pivotally mounted in a substantially X shape between the right and left sides of a base 8 having a small wheel 9 and a table 10, and a support arm 11 is interposed to operate a lift cylinder (not shown). , hold the table 10 horizontally? The same table 10
A turning table 12 forming part of the supply conveyor 26 is provided above. This rotating table 12 is a frame member 13.13 that aligns with the left and right support frames of the supply competition F26.
A plurality of rollers 14 are rotatably supported between them, and a support member 15 attached between the frame members 13 is rotatably provided with respect to the table 10. A chain link 16 is attached to the table 10. A driving chain 917 of the rotating table 12 is mounted on the table 10, and a driving chain wheel 18 is connected to the rotating shaft of the rotating table 12 in correspondence with the driven chain wheel 16. An endless chain 19 is suspended between the chain wheels 16 and 18.The table lifter 7 thus formed is mounted on a rail 20 laid perpendicular to the supply conveyor 26 (not shown). However, it is movable by a drive device.

A work feeder 21 is disposed perpendicular to the rail 20, and a hopper 23 having a predetermined length and a substantially groove-shaped cross section is supported on a base 22 via a spring 24. The tip of the hopper 23 is provided as seen above the rail 20, and a shaking vJ device 25 is integrally attached to the bottom surface of the hopper 23, so that the hopper 23 can be moved back and forth in a predetermined manner. The workpiece placed on the hopper 23 is fed by falling from the tip. The table lifter 7 installed in this manner is normally held at a position aligned with the supply conveyor 26, and when the empty packet 1 from the feeder section F reaches the rotary table 12, it is detected by the detection means and moved to the lift cylinder. is activated, the basket 1 is lowered together with the table 10, and when it reaches a predetermined lowering position t7, it is detected by the detection means and the lowering is stopped, whereby the table lifter 7 is moved along the rail 20 by the drive device. Basket 1 is hopper 2
When it reaches the lower position of 3, it is stopped. This stop is ti
When VLK is performed, the drive motor 17 is activated to rotate the swing table 12 at a low speed, and the work feeder 21 is also activated to sequentially feed the works on the hopper 23 into the basket 1. When the input amount of workpieces reaches a predetermined height position of the basket 1, the workpiece feeder 2
1 is stopped, and the turning table 12 is stopped at a predetermined directional position. After that, the table lifter 7 is returned to its original position by the drive device, and the rotation table 12 is held at the upper differential position in alignment with the supply conveyor 26 by the operation of the lifting cylinder. Then, each roller of the supply conveyor 26 is rotated, and the basket 1 is stopped and waited in front of the first dip coating section 131.

Next, the dip coating device 27 will be explained. This device 27 has primary and secondary dip coating sections B1 and B2 arranged side by side and is formed in a roughly symmetrical shape. Regarding the B1 side, reference numeral 29 is an immersion tank provided at a predetermined position on the main body frame 28, and is formed in a volume of 1 yen capable of containing a predetermined volume of coating composition liquid.
A sub-tank 30 is provided on the side of the main body frame 28, and the upper sides of both tanks 29 and 30 are connected via an overflow groove 31, and the bottom of the sub-tank 30 of the primary dip coating section B1 is is a double piping system 'i'
1 32 is installed) and the distributed t'I device 32 is connected to the bottom of the dipping tank 29 of the secondary dipping coating section B2, and is also connected to the bottom of the sub tank 30 of the secondary dipping coating section B2 in the same way. Two piping devices! 9!32 is provided, and the piping neck 32 is connected to the bottom of the oil immersion tank 29 of the second immersion coating section B1 so as to be able to circulate and supply the coating composition liquid,
A circulation pump 33 is disposed in each of these piping ￥:, t32, and these two pumps 33 are operated alternately to prevent pulsation and to circulate and replenish the coating composition liquid to the immersion tank 29. It is configured to remove air bubbles that are clearly generated when the basket 1 is exposed to air and air bubbles that adhere to the surface of the workpiece. In addition, heat-retaining tanks 34 and 35 are formed around the peripheries of the immersion tank 29 and the sub-tank 3o to maintain the viscosity of the '11 coated phase composition liquid at a constant level, and circulate water at a predetermined temperature (for example, 20°C). It is configured as follows. Further, a stirring equipment 36 is attached to the immersion tank 29.

Reference numeral 37 denotes a drive motor for the stirring 5A station 36, which is erected on the frame 28a of the main body frame 28, and a drive chain wheel 39 is keyed to the rotating shaft 38. Also, frame 28
A bearing member 40.4 is provided between the frame 28b and the upper frame 28c.
A drive shaft 42 is rotatably installed vertically through the drive shaft 42, and an intermediate chain wheel 4 is provided at the lower end of the drive shaft 42 in correspondence with the drive et A wheel 39.
3 is attached to the key, and the intermediate chain wheel 44 is also attached to the -F end of the same 1T4A42, and the driving chain wheel 39 and the intermediate chain wheel 4 are attached.
A chain 45 is hung between the two. Also, 4
6 is a rotating ring, and the rotating ring 46 is rotatably mounted on a plurality of rolling bearings 47 rotatably disposed at predetermined intervals around the periphery of the upper opening of the immersion dJ tank 29. A ring-shaped chain wheel 48 corresponding to the intermediate chain wheel 44 is attached to this rotating ring 46, and four chains are hung between the chain wheels 44 and 48. Further, for example, three stirring arms 50 are vertically provided on the rotating ring 46. This stirring arm 50 has a support rod 51 and a support rod 51.
This support rod 51 is rotatably mounted vertically close to the inner peripheral wall of the immersion tank 29 as shown in the figure, and the blades 52 are arranged in a forest-like manner. It is provided so as to rotate in a state close to the provided bottom. In the stirring device 36 formed in this way, the stirring arm 50 is rotated at a low speed by the driving of the drive motor 37, thereby preventing the flaky special zinc powder contained in the coating composition liquid from being deposited at the bottom. , so that the same wave can be sufficiently applied to the workpiece. Note that the secondary side is also configured in the same manner.

Next, the shake-off device 53 will be explained.
3 is the first and second cut-off portion CI.

Since C2 are arranged in parallel and formed in a symmetrical shape,
To explain the primary cut-off section C1 side, 55 is a reducer 1 drive motor that is mounted on the side of the main body frame 54 via a bracket 56, and is a rotary shaft of the same drive first motor 55. The drive pulley 57 is keyed.

Further, 58 is a drive shaft trowel structure vertically installed on a frame 54a horizontally suspended on the main body frame 54, and the input shaft 58 on the lower side
A brake device fff60 is provided on the 9 side, and a driven pulley 6 is provided on the @59 side in correspondence with the drive pulley 57.
1 is attached, and furthermore, a gear 62 for rotation speed detection is attached to the lower part thereof, and a detector 163 is provided opposite to the gear 62. Further, a rotary plate 65 is installed horizontally on the output shaft 64 on the upper side, and this rotary plate 6
A cage-shaped fitting part 66 that fits into the truncated cone-shaped recess of the basket 1 is formed in the center of the basket 5 in a protruding manner. Further, a receiving part 67 is formed on the upper surface side of the frame 54a to collect the coating composition liquid removed by shaking off, and a rotating part 68 is defined.
The recovery tank 69 is connected to the sub-tank 30 of the dip coating device 27 via a pump or the like so that the liquid can be recovered. Moreover, two rails 70 are arranged in parallel on both sides of the upper opening side of the rotating part 68, and large and small lid bodies 71 and 72 are provided so as to be openable and closable. Reference numeral 73 denotes a drive motor for the lids 71 and 72, which is attached to the upper side of the main body frame 54 via a bracket 74, and a drive chain wheel 75 is keyed to its rotating shaft. Further, a drive shaft 76 is provided between the ends of the rail 70 extending laterally from the main body frame 54.
is rotatably supported, and an intermediate chain wheel 77 is keyed on the same shaft 76 in correspondence with the drive chain wheel 75, and both chain wheels 75,77
A chain 78 is hung between them, and a chain wheel 79 is also keyed to the end of the coaxial shaft 76. Also, chain wheel 79
A chain wheel 81 is rotatably mounted via a shaft 80 in correspondence with the chain wheel 79 near the center of the rail 70 on the side where the chain wheel 79 is provided.
A chain 82 is installed between both chain wheels 79.81, and both ends of the chain 82 are attached to adjustment screw rods 83.83 attached to the sides of the lid 71 so that the tension thereof can be adjusted. ing.

Further, a detection plate 84 is attached to approximately the center of the side of the lid body 71, and the detection plate 84 is attached to a chain i79.81.
It is provided so as to be opposed to a proximity switch 85, 86 that is provided adjacent to the. Lid body 7 provided in this way
1.72 is engaged and connected, and when it is confirmed that the basket 1 is placed on the rotary plate 65, the drive motor 73
is started, and as the chain 78 rotates, the lid 71 is first moved along the rail 70, and then the lids 71.
When the detection plate 84 is detected by the proximity switch 85 when the detection plate 84 is detected by the proximity switch 85, the drive motor 73 is stopped and the upper part of the rotating part 6B is closed. When the drive motor 73 is stopped, the drive motor 55 with a speed reducer is started, whereby the rotary plate 65 and the basket 1 are rotated together, and the excess coating composition liquid adhering to the workpiece is shaken off. This rotation of the rotary plate 65 is detected by the detection means 63.
The drive 81-ta 5 is recurrent and reaches a predetermined rotation speed.
5 is stopped, the brake device 60 is braked to stop the rotation. The rotation speed of the rotary plate 65 determines the time during which the coating composition wave is applied to the workpiece, that is, the thickness of the coating film, and is electrically set depending on the type of workpiece.

When it is confirmed that the rotary plate 65 has stopped, the drive unit 3 is reversed, the cover bodies 71 and 72 are moved, and when the detection plate 84 is opposed to the proximity switch 86, it is stopped and the upper part of the rotary part 68 is An inlet trapper 87 is disposed above the dip coating device 27 and the shake-off device 53 thus provided.

This inlet traverse ``j-87'' is connected to the first and second baskets 1 waiting at the front of the immersion coating device 27, the first and second baskets 1 in the immersion coating device 27, and the shake-off device 5.
3, the first and second baskets 1 are held together and transferred to the next process, and the pedestal 88 has a reinforcing frame horizontally mounted on the upper side of four struts 89 each having a cross-sectional groove shape. An elevating section 90 is formed. 91 drops Te frame 10
8 is a power cylinder for raising and lowering the lowering part 8, and is attached to a predetermined position of the lifting part 90 via a trunnion metal fitting 92, and the tip of the cylinder 93 is connected to the guide member 94 for lowering 4.
It is attached to a movable body 96 that is slidably provided. A corresponding guide groove 95 of a predetermined shape is formed on the side of the WII lowering blade guide member 94. Reference numeral 96 denotes a movable body, and rollers 97 for moving the guide groove 95 are pivotally mounted on both sides of the movable body 96. Also, at predetermined positions on both sides of the movable body 96, rollers 97 that pass through the guide groove 95 are pivoted. An arm 98 is formed to extend laterally by a predetermined length.Furthermore, bearings 98 are provided at the front, rear, and approximately center portions of the elevating portion 90.
@100, 101, and 102 are rotatably supported through the shaft 100, and chain wheels 103 are keyed on both sides of the shaft 100, and chain wheels 10 are provided on both sides of the shaft 102 in correspondence with the chain wheels 103.
4 is keyed. In addition, on both sides of the shaft 101, there are chain wheels 103, which are attached to the 1st place 19? 105 in the chain by displacing
The keys are worn. Chain wheel 10 numbered like this
As shown in the figure, a chain 106 is placed between 3 and 104, and one end of the chain 106 is connected to the arm 9 of the movable body 96.
8, and the other end is suspended downward and fixed to the elevating frame 108. Further, a chain 107 is hooked to the chain wheel 105, one end of which is fixed to the arm 98 of the moving body 96, and the other end is hung downward and fixed to the quadruple frame 108. ing.

This R lowering frame 108 includes left and right guide frames 109 having a generally groove-shaped cross section, front and rear support guide frames 110 J-3, and a reinforcing frame 1.
The front and rear support guide frames 110 extend to both sides, and are provided with guide members 112 each having a guide member 113 at the end that rolls along the support column 89. The frame 108 is suspended by chains 106 and 107 suspended from the rising portion 90, and is provided along the branch 89 so as to be able to be lifted. A slide frame 114 is slidably provided on the elevating frame 108 thus provided. On the left and right sides of this slide frame 114, there are terrestrial drop frames 10.
A roller 115 that rolls along the vortex of the left and right guide frame 109 of 8 is provided, and a second roller 115 is provided on the lower surface side of the frame 114.
A gripping device 11 that grips the gripping portion 6 of the basket 1 at predetermined intervals along the center line of the next line J3 and the secondary line
6 are arranged. Reference numeral 117 denotes a mounting member for the device 116, and supporting pieces 118 in the shape of the member 117 with the tip 9 on the side are placed opposite each other at a predetermined interval and overlapped with each other.
A mounting portion 119 on the lower side of 18 has gears 12 that mesh with each other.
A driving arm 120 and a driven arm 121 are pivotally connected to each other. Further, this drive arm 120 is integrally formed with a connecting arm 123 extending upward, and the end of the connecting arm 123 is attached to a rod 126 of an actuating cylinder 125 which is pivoted on a mounting member 117 via a trunnion fitting 124. connected to the tip. In addition, both arms 120
．． Gripping claws 127 are attached to the lower end of the basket 121 facing each other, and the gripping portion 6 of the basket 1 is held in a position and opened via the gear 122 by the operation of the actuating cylinder 125.
(1°4) so that it operates in the position shown.
Reference numeral 128 denotes an operating cylinder having a stroke that provides a predetermined amount of movement to the slide frame 114. The base is attached to the support guide frame 110 at the front of the lifting frame 108,
The tip of the iron 129 is connected to a predetermined position of the slide frame 114. The inlet driver (knur 87) formed in this way is connected to the actuating cylinder 128 of the slide frame 114 when the coating J3 and the shaking off work for the workpieces in the dip coating device 27 and the shaking off device 53 are completed.
When the power cylinder 91 of the elevating section 90 is shortened in the extended state, the lowering frame 108 is lowered to a predetermined position, and the arms 120, 121G, L of each gripping device 116 attached to the slide frame 114 are moved. The basket 1 in the process and the dip coating device 27 are held in a position where the grip portion 6 of the basket 1 waiting at the front can be gripped, and the operation cylinder 125 of the device 116 is actuated to grip the grip portion 6. When confirmed, the power cylinder 91 is operated to extend and the lifting frame 1013 is moved up to a predetermined height position, whereby the operating cylinder 128 is operated to shorten and each basket 1 is moved upward to the next process. .

And when this is m W2, the power cylinder 91G
The elevating frame 108 is shortened and lowered, and each basket 1 is placed on the next stage, and at the same time the gripping part d11G
is opened, and at the same time, the elevating frame 108 is moved upward, and the operating cylinder 128 is extended and lifted to its original position.

Next, the first and second child section 1 drying section Di, D2 and the first
Secondary vibration part E1. Regarding E2, the pre-coupling drying section and the vibrating section E are arranged in the heat pressure first circulation furnace 153 and are connected to the first conveyor 155J3 and the second conveyor 15G.
A lfi head 130 is provided below the pre-drying section to dry the coating composition liquid applied to the workpiece after shaking off. J.

In addition, a vibrating device 131 is provided in the vibrating section E.

In this device 131, the vibration mechanisms 132 of the first vibration part a'3 and the second vibration parts E1 and E2 are arranged in parallel and are formed in a roughly symmetrical shape. Therefore, the first vibration part F1 side will be explained. , 133 is a pedestal installed to straddle the first and second conveyors 155 and 156. A support frame 134 with a predetermined width is formed on the upper part of the pedestal 133, and its upper support part 134a An actuating cylinder 135 is mounted approximately in the center of the rod 135 with its rod 136 facing downward, and a gripping device 137 is connected to the tip of the rod 136. 1
Reference numeral 38 denotes a substrate of the gripping device 137, which is provided horizontally, and a guide bar 140 is mounted on both ends of the board via mounting members 139, and the guide bar 140 is symmetrically connected to the actuating cylinder 135 attached to the upper support portion 134a. It is inserted through a guide strip 141 provided at a position. In addition, the substrate 13
Support plates 142 are vertically installed on both sides of the support plates 142, and two wooden sliding rods 143 are horizontally suspended in parallel between the support plates 142, and a pair of gripping pieces 144 are attached to the sliding rods 143. ! ! ! ! a
”It is possible to install it. Further, a mounting piece 145 for a cylinder is suspended from the lower surface of the center part of the board 138, and on both sides of this mounting piece 145, double-acting cylinders 146 are mounted with rods 147 facing oppositely and concentrically. At the same time, the axis of the rod 147 is aligned with the center line between the sliding rods 143, and the tip thereof is connected to the gripping piece 144. Further, a holding member 148 is attached to the lower end of the attachment piece 145.

Further, a claw body 149 is attached to face the gripping piece 144, and the claw body 149 is provided with an inclined surface 150 as shown in the figure, and the double-acting cylinder 146 is actuated to grip the gripping portion 6 of the basket 1. Then, the flange portion 6a of the gripping portion 6 is lifted upward along the inclined surface 150, and the holding member 148
It is configured to be firmly gripped by being brought into contact with the handle. The operating cylinder 13 of the vibration mechanism 132 provided in this way
5 is a detection means 15 below the first floor that detects the position of the piston.
1,152 is installed, and this upper detection means 151 is installed slightly above the approximate center of the cylinder 153, and when the piston is in the upward movement process and confirms passage, it cuts the valve and operates the piston chamber side. The device operates by changing the fluid pressure to l, yJ, and then repeating this several times to vibrate the basket 1 several times, displacing the contact posture of the workpiece in the basket 1, and discharging the half-dried liquid. The liquid is forced to flow to the contact surface and the liquid flows in four directions. Note that the respective operating cylinders 135 and 146 of the left and right swing il JFM structures 132 are arranged to operate in synchronization.

153 is a hot air circulation furnace, and a conveyor 154 of a predetermined width that moves intermittently at a predetermined interval is installed in the circulation furnace 153, and the flow of the baskets 1 is carried out on the primary and secondary conveyors 155 and 156. Separated.

Note that this circulation furnace 153 also has a preheating zone 157 and a final firing zone 158 for the workpiece, as in the conventional circulation furnace.
It is divided into.

Reference numeral 159 is an outlet side traverse bar provided on the outlet side of the hot air circulation furnace 153, and the first competition'+y 155
and a circulating conveyor 187, 160 is a frame, and a guide frame 162 having a pair of guide frames 163 is horizontally suspended between the F portions of the four branches 161. The slide frame 1 is moved through the roller 165 that moves through the groove of the guide frame 163.
64 is movably provided. In addition, this slide frame 164 has four columns 161 vertically installed vertically.
A lifting cylinder 169 is attached to the center of a frame member 168 provided on the upper part of the guide frame 166 with its rod 170 facing downward. An elevating frame 171 is attached to the tip of the elevating frame 170, and guide rollers 172 are provided above and below each corner of the elevating frame 171 to cover both sides of the inner corner of the support column 167. Further, 173 is a drive motor for the slide frame 164, and is a drive motor for the circulation conveyor 187 of the guide frame 162.
It is attached to the side of the side via a bracket 174,
A driving chain wheel 175 is keyed to the rotating shaft of the motor 113. Further, rotary shafts 176 and 177 are rotatably supported on both sides of the guide frame 162 via bearings 178 at the same position, and a chain wheel 179 is installed near one end of both rotary shafts 176 and 177. A chain 180 is hung between the two chain wheels 179, and both ends of the chain 180 are attached to the slide frame 164 via adjustment bolts 181. Also, the slide frame 164 located approximately in the middle of this adjustment bolt 181
An adjustment chain wheel 182 for maintaining the tension of the chain 180 is rotatably provided on the top. In addition, the rotating shaft 17
6 has an intermediate chain wheel 184 corresponding to the drive chain wheel 175, and both chain wheels 175.
4 is attached. Furthermore, a gripping device 116 having the same configuration as the gripping device N116 attached to the entrance side traverser 87 is attached to the elevating frame 111. In addition, 18
5 is a left limit switch for stopping the slide frame 164 at a predetermined position on the left side of the guide frame 162 and placing the basket 1 on the circulation conveyor 187; The first conveyor 1 stops at a predetermined position.
This is a right-hand limit switch for stopping the basket 1 on the 55 at a position where it can be gripped. The exit side traverser 159 configured in this manner allows the primary conveyor 15 to
The basket 11 transferred from No. 5 onto the circulation conveyor 187 is subjected to the second immersion of the dip coating device 27 by the same circulation conveyor 187! ? It is carried and carried to the front part of loading section B2.

Reference numeral 188 denotes a delivery conveyor connected to the secondary conveyor 156, which is linked to the supply conveyor 26. The delivery conveyor 188 is provided with a delivery part F adjacent to the supply part A. This feeding section F is composed of a reversing device 189 and a delivery feeder 205.

Reference numeral 190 denotes a base frame of the reversing device 189, and a first shaft 191 and a second shaft 192 are inserted from below between the side plates at - as shown in the figure.
and a third shaft 193 is rotatably supported,
Gears 19 are at both ends of each @191.192.193.
4 are keyed and interlocked with each other.

Further, 195 is a reversing drive motor, and the motor 19
5 has a brake device 196 cut out therein, and a chain wheel 197 is keyed to its rotating shaft. Also, 19
Reference numeral 8 denotes a reduction gear, and a chain wheel 199 is keyed on this input shaft in correspondence with a chain wheel 197, and a chain 200 is connected between the two chain wheels 197 and 199. Further, this reduction gear jJ719g is linked to the first shaft 191.

Reference numeral 201 denotes a pair of reversing arms attached near both ends of the first shaft 191, and the arms 201 have a length that allows them to grip the outer periphery of the basket 1 conveyed on the delivery conveyor 188. A clamp piece 204 is provided on the opposing surface of the distal end side of this arm 201 via an actuating cylinder 202 and a guide bar 203.
is configured to clamp and unclamp the outer periphery of the basket 1 by operating an operating cylinder 202.

By driving the reversing device 711894 formed in this manner and the reversing drive motor 195, a series of operations from the standby position a to the clamp/unclamp position and the reverse position 71c are performed. Reference numeral 206 denotes a delivery hopper of the delivery feeder 205, which is supported on a vibration device 207 via a spring member 208, and the work inherited from the inversion i-placement 189 is transferred to the vibration device 207. The structure is such that reciprocating vibration is applied to the material and the material is fed to the transport section below.

J3, the vibrating mechanism 132 of the vibrating device 131 is exemplified with a configuration that gives vertical vibration to the basket 1, but is not limited to this, in short, it displaces the posture of the workpiece in the basket 1 in the contact state, Any configuration may be used as long as the liquid can be forced to flow.

(Effects of the Invention) Now, in the method for coating the coating composition liquid according to the present invention, the Basquera 1~ containing the workpiece is immersed in the coating composition liquid, and the Basquette is rotated to apply the excess [[ After shaking off and removing the composition liquid, when the baking is cured in a hot air circulation oven, after shaking off the excess coating composition liquid, the same wave is sent to the wire in the basket and dried The structure includes a pre-drying step in which the basket is repeatedly vibrated to displace the contact state of the workpiece in the basket, and a vibration step in which the waves are forced to flow. Therefore, by applying vibration to the basket rack 1~ multiple times, the posture of the workpiece in the basket in the contact state is displaced, and
It is possible to avoid forced flow of half-dried liquid and to scatter liquid that has accumulated and flowed to the contact surface, thereby significantly reducing defects on the contact paper and liquid accumulation, and improving its quality.

Further, the apparatus according to the present invention for coating the coating composition liquid is installed on the inlet side of a hot air circulation furnace in which a first conveyor path and a second conveyor path are arranged side by side and a conveyor j2 that moves intermittently is arranged. Immerse the basket containing the workpiece in the coating composition solution.
a) A dip coating device with the first and second immersion coating parts arranged side by side, and a rotating basket to collect the excess coating composition liquid applied to the workpiece by immersion coating by the first and second immersion coating &S. A shake-off Vcff has first and second shake-off sections arranged side by side for shake-off and removal, and a first and second pre-drying section and first and second A secondary vibration section is arranged on the outlet side of the circulation furnace, and a circulation chamber 1 connects the basket on the first conveyor path from the outlet side to the front part of the second dip coating section of the dip coating apparatus. The exit side traverser for transferring the baskets onto the conveyor and the exit side of the secondary conveyor path are connected to the supply conveyor for transporting the baskets to the front of the primary dip coating section of the dip coating device. A conveyor is provided to form a circulation path, and a conveyor is provided on the inlet side of the circulation furnace. An inlet side traverser is provided to collectively grip and transfer the baskets to the next one culm, and furthermore, an @ moving device is provided in the first and second vibration parts to repeatedly vibrate the baskets in the same part. It is structured as follows. Therefore, by interposing a pre-drying section and a vibrating device between the shaking device and the hot air circulation device, the conventional manual work of scattering the paste from the basket to the tray or net conveyor can be omitted. In addition to being able to produce the same effect, each process can be linked in circulation, and each process from supplying the workpiece to dispensing can be automatically and efficiently processed. can improve productivity.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is a plan view of the arrangement of various parts of the coating device, Fig. 2 is a partial plan view of the basket, and Fig. 3 is a partial plan view of the basket.
The figures are the same <sit sectional view, Fig. 4 is the side view of the supply section, Fig. 5 is the same iF side view, and Fig. 6 is the immersion section. I! i A front view of the painted part, Fig. 7 is also a plan view, Fig. 8 is a partial view of the stirring device N, Fig. 9 is a plan view of the shaking device, and Fig. 10 is also a partially broken view. FIG. 11 is a front view of the entrance side traverser, FIG. 12 is a sectional view taken along the line II-II in FIG. 11, FIG. 13 is a side view, and FIG. 14 is a front view of the gripping device. Figure 16 is a front view of the vibrating device, Figure 16 is a side view, Figure 17 is a plan view of the outlet side trapper,
The figures are also a front view, FIG. 19 is a side view, FIG. 20 is a plan view of the feeding section, FIG. 21 is a partially cutaway side view, and FIG. Fig. 22 is a conventional process diagram. 1... Basquera 1 to 26... Supply conveyor 27
...Dipping coating device 53...Shaking device 87...
・Entrance side traverser 131... Vibration device 153...
Hot air circulation furnace 154...conveyor 155...first
Next conveyor 156...First conveyor 159...
Outlet side traverser 187...Circulation conveyor 188...Feeding conveyor 8...Supply section 81, B2...First, second immersion l? i painting department CI,
C2... 1st, 2nd rounding section 01, [12...
1st, 2nd preliminary drying section IEI, E2... 1st,
Secondary vibration section [... Feeding Department Applicant Togo Seisakusho Co., Ltd. Agent Patent Attorney Hidehiko Okada (and 3 others) No. .Indication of the case Patent Application No. 164237 of 1985, relationship with the Xi case as amended: Patent Applicant Address 1 Hiruike, Oaza Haruki, Togo-cho, Aichi-gun, Aichi Name Name: Togo Seisakusho Co., Ltd. (Name) Representative: Takeshi Aiba-4, Agent address: 052 (221)-6141, Nagoya Chamber of Commerce and Industry Building, 2-10-19 Sakae, Naka-ku, Nagoya 460 (Representative) 1988
September 3, 2019 (Shipped on September 30, 1986) 6
, subject to correction

Claims (2)

[Claims] (1) The basket containing the workpiece is immersed in the coating composition liquid, the basket is rotated to shake off and remove the excess coating composition liquid applied to the workpiece, and then baked and hardened in a hot air circulation furnace. At this time, after shaking off the excess coating composition liquid, there is a pre-drying step in which air is blown onto the workpieces in the basket to partially dry the same liquid, and the contact state of the workpieces in the basket is changed by repeatedly vibrating the basket. 1. A method for applying a coating composition liquid, comprising: a vibration step for forcing the liquid to flow; (2) The first step is to immerse and coat the basket containing the workpieces in the coating composition liquid at the inlet side of the hot air circulation furnace, which has a primary conveyor path and a secondary conveyor path arranged side by side and a conveyor that moves intermittently. A dip coating device has a first and second dip coating section arranged side by side, and the first and second dip coating sections are used to dip coat and remove excess coating composition liquid applied to the workpiece by rotating a basket. a shaking device in which first and second shaking sections are arranged in parallel, and a first and second pre-drying section and a first and second vibrating section are arranged in a part where the conveyor extends from the inlet side of the circulation furnace. The baskets on the primary conveyor path are transferred from the exit side of the circulation furnace onto a circulation conveyor connected to the front of the secondary dip coating section of the dip coating device. An exit side traverser and a pick-up conveyor connected to a supply conveyor for conveying baskets to the front of the primary dip coating section of the dip coating device are provided on the outlet side of the secondary conveyor path to form a circulation path. At the same time, an inlet side traverser is provided on the inlet side of the circulation furnace to collectively grasp the baskets of the first and second immersion coating parts, the first and second shake-out parts, and the waiting baskets and transfer them to the next process. A coating composition liquid coating apparatus characterized in that the first and second vibration parts are further provided with a vibration device that repeatedly vibrates a basket in the same part.