JP2003080143A - Trial coating apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trial coating apparatus for automatically removing the high viscosity fluid applied to a trial coating belt. SOLUTION: The draw-out part 230 of a roll tape 220 is trained over a press roller 232 and pressed to the trial coating belt 182 held between feed rollers 234 and 236 and trained over sprockets 190 and 192 to be provided horizontally. An adhesive is applied to the part in a trial coating region of a trial coating surface 204 and, after the completion of trial coating, a motor for rotating the trial coating belt 182 is operated to rotate the trial coating belt 182 and the rotation of the motor for rotating the trial coating belt 182 is transmitted to the press roller 232 and the feed roller 234 to feed the draw-out part 230 in a longitudinal direction and the adhesive is wipen off at the part coming into contact with the trial coating surface 204 thereof. The used part of the draw-out part 230 is housed in a housing box.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to disposing of a highly viscous fluid in a high-viscosity fluid coating device that discharges a highly viscous fluid from a discharge nozzle and applies the fluid to a surface to be coated. It is about removal.

[0002]

2. Description of the Related Art Disposing of a high-viscosity fluid such as an adhesive or cream-like solder on a surface to be coated by discharging it from a discharge nozzle is disclosed in, for example, Japanese Patent Laid-Open No. 4-244.
It is already known as described in Japanese Patent No. 258,258. The discarding is an original application of the high-viscosity fluid, that is, a discharge other than the application performed on the surface to be coated to perform the role set for the high-viscosity fluid, and there is, for example, a trial ejection. Trial ejection is performed in order to detect the ejection position, ejection amount, etc. of the high-viscosity fluid in a state where ejection is normally performed, correct the relative movement distance between the ejection nozzle and the surface to be coated, and set ejection conditions. It is the discharged.

In the high-viscosity fluid coating apparatus described in the above publication, the trial shot is performed on the trial shot table which is a member dedicated to the trial shot. At the time of trial ejection, the ejection nozzle is moved onto the trial ejection surface of the trial application table by the moving device to eject the highly viscous fluid. The test shots are performed multiple times, and after the test shots are completed, the multiple high-viscosity fluids that have been shot for trial are imaged by the camera to determine the respective center positions, and the multiple center positions are compared with the normal position without deviation. Then, the average of each positional deviation is obtained, and the positional deviation of the ejection nozzle is detected. When the highly viscous fluid is applied to the application target surface, the moving distance of the ejection nozzle is corrected based on the detected positional deviation, and the high viscosity fluid is accurately applied to the preset position on the application target surface. Then, when the trial striking surface is filled with the high-viscosity fluid that has been trial-strike, it is wiped off by the operator so that the next trial striking is performed. The same test striking surface is repeatedly used for test striking.

[0004]

If the trial striking surface is repeatedly used for the trial striking as described above, the trial striking can be performed without waste, but the operator wipes the trial striking surface. Removing high viscosity fluid is tedious.

In view of the above circumstances, the present invention has been made to solve the above problem, and has an object to automatically clean a scrap surface to be scrapped. The disposing device of each of the following aspects can be obtained. Similar to the claims, each aspect is divided into paragraphs, each paragraph is numbered, and the numbers of other paragraphs are referred to as necessary. This is merely for facilitating the understanding of the present invention, and the technical features and combinations thereof described in the present specification should not be construed as being limited to those described in the following items. . Moreover, when a plurality of items are described in one section, it is not always necessary to adopt the plurality of items together. It is also possible to select and use only some of the items.

In each of the following items, item (1) corresponds to item 1, item (4) is item 2, item (5) is partly item 3, item (6). , (8), (9) and (10) are combined, and they correspond to claim 4, respectively.

(1) In a high-viscosity fluid coating device for discharging a high-viscosity fluid from a discharge nozzle to coat the surface to be coated,
A device for discarding a high-viscosity fluid from the discharge nozzle to a surface other than the surface to be coated, which has an endless track shape, and an outer surface constitutes a waste surface, and a waste belt which circulates the waste belt. A discarding device including a revolving drive device and a removing device for removing the highly viscous fluid discarded on the discarding surface. The discarding includes, for example, preliminary firing in addition to the trial firing. Preliminary ejection is an ejection for removing the hardened highly viscous fluid so that the ejection can be normally performed when the highly viscous fluid is hardened in the ejection nozzle or the like. The high-viscosity fluid includes, for example, an adhesive, a creamy solder, and a paste which does not contain a solder component itself and is applied to facilitate soldering. If the waste surface of the waste belt is discarded a number of times and there is no more space for waste disposal, the waste belt is rotated by the circling drive device, and the high-viscosity fluid on the waste surface is discarded. The non-existing surface is positioned in the discardable area, and the highly viscous fluid discarded on the discarding surface is automatically removed by the removing device, and the discardable state is made again. Since the waste belt can be repeatedly used for waste disposal without requiring the worker to wipe off the high-viscosity fluid, waste disposal can be easily performed without waste. (2) The discarding device according to item (1), which includes a backup member that supports an inner surface of the discarding belt opposite to the discarding surface. The portion of the backup member that supports the inner surface of the waste belt is preferably a low friction portion having a low friction coefficient. If the inner surface of the waste belt is supported by the backup member, it is possible to prevent the waste belt from hanging down, so that the waste belt and the removal of the highly viscous fluid can be effectively performed. (3) At least the scraping surface of the scraping belt is made of synthetic resin, and the scraping surface is a smooth surface.
Disposal device according to item (1) or (2). Synthetic resin
The surface is smooth, and it is possible to completely remove the discarded high-viscosity fluid. Completely removing means removing to the extent that it has no optical influence. (4) At least the discard surface of the discard belt is
The disposing device according to any one of items (1) to (3), which is formed of polytetrafluoroethylene. Polytetrafluoroethylene is a synthetic resin known by the trade name of Teflon, which is a kind of fluororesin, is stable to almost all organic solvents, and is discarded on the disposal surface such as organic solvents. It is chemically stable and durable. In addition, it has a low coefficient of friction and has a property that a substance does not easily adhere, and it is easy to remove discarded high-viscosity fluid. (5) The discarding device according to any one of items (1) to (4), wherein at least the discarding surface of the discarding belt is a high-luminance surface such as white or yellow. It is desirable that the cut-off surface be a surface having a distinctly different optical characteristic from the high-viscosity fluid, such as hue, brightness, and brightness. Highly viscous fluids are often colored, for example, adhesives are often colored red, and it is desirable that the scraped surface is a high-luminance surface such as white or yellow. As a result, there is a large difference in brightness between the discarded surface and the highly viscous fluid. For example, when the discarded highly viscous fluid is imaged by a black and white imaging device, an image with a large contrast between the discarded surface and the highly viscous fluid is obtained. It is possible to obtain an image of the highly viscous fluid with high accuracy, and it is possible to accurately detect the discard amount of the highly viscous fluid and the like. (6) The discarding device according to any one of (1) to (5), wherein the removing device wipes off the high-viscosity fluid discarded on the discarding surface with a wiping sheet. The wiping sheet may be any sheet as long as it can wipe off the high-viscosity fluid that has been thrown away on the scraping surface, and may be a sheet divided into individual sheets, or a tape as described in item (8). . (7) The discarding device according to (6), wherein the removing device includes a pressing device that elastically presses the wiping sheet against the discarding belt. The pressing device may include, for example, an air cylinder. In this case, if a pressure control valve device that adjusts the atmospheric pressure of the pressurized air supplied to the air cylinder is provided, the pressing force can be adjusted arbitrarily. It will be possible. Also, for example, contact the scraping belt with the wipe sheet,
The wiping sheets can be separated from each other, and the work can be easily performed by keeping them away from the waste belt when the wiping sheet is provided. Furthermore, the pressing device may include a spring member such as a coil spring or a leaf spring, which is a kind of biasing device, and in that case, the manufacturing cost can be reduced. The wiping sheet elastically pressed against the discard belt is moved relative to the discard belt while in contact with the discard surface when the discard belt is rotated by the circulation drive device, and wipes away the discarded high-viscosity fluid. . (8) The wiping sheet is a longitudinal wiping tape.
Disposal device according to item (6) or (7). (9) The wiping tape is a roll tape wound in a roll shape, and the removing device includes a tape feeding device that feeds a portion pulled out from the roll tape in a longitudinal direction.
Disposal device according to item (8). The pull-out section of the roll tape is
When it is fed in the longitudinal direction by the tape feeding device, it moves while wiping off the highly viscous fluid that has been discarded on the discard surface. At the same time, the part newly used for wiping is pulled out from the roll tape, and the high-viscosity fluid that has been discarded on the waste surface is the unused part of the pull-out part of the roll tape, and the high-viscosity fluid has adhered to it. It is wiped off by the parts that are not. The feeding of the pull-out portion of the roll tape and the circulation of the waste belt may be performed at the same time, partially at the same time, or all at a different time. In any case, the feed-out of the roll tape pull-out section causes the cut-out surface and the draw-out section to move relative to each other, and the draw-out section wipes off the high-viscosity fluid that has been cut off on the cut-out surface. It is possible to wipe away the highly viscous fluid adhering to the waste surface by contacting the unused portion with the portion of the waste surface that has not yet been wiped with the high viscous fluid as the unused portion moves away from the waste surface. Therefore, the highly viscous fluid can be removed well. (10) The discarding device according to item (9), wherein the tape feeding device and the circling drive device share a drive source. A reciprocating drive source such as an air cylinder can be used as the drive source, but a rotary drive source such as an electric motor is easier to simplify the configuration of the device. This is because the former case requires a motion conversion device that converts reciprocating motion into rotary motion, such as a combination of a rotary lever and a one-way clutch, or a combination of a crankshaft and a connecting rod. If the tape feeding device and the circulating drive device share a drive source, the device can be configured easily and at low cost. (11) A pressing roller that presses the pulled-out portion of the roll tape against the scraping surface of the scraping belt, and the tape feeding device includes a roller rotation driving device that rotationally drives the pressing roller (9) Or or (10)
Disposal device according to item. The pull-out portion of the roll tape is pressed against the scrap surface by the pressing roller, and the pressing roller is rotationally driven, so that the roll tape is reliably fed. (12) The tape feeding device includes a tape feeding belt having an endless track shape and at least two rotating bodies around which the tape feeding belt is wound, and one of the at least two rotating bodies is It is pressed against the waste belt with the pulled out part of the roll tape sandwiched between them.
Disposal device according to item (9) or (10). The rotating body is, for example, a timing pulley, a roller, a V pulley, or a flat pulley. The tape feed belt is rotated by the rotation of the rotating body around which the tape feed belt is wound. The roll tape pull-out part, which is sandwiched between the rotating body and the tape feed belt and the discard belt, is supported by the tape feed belt, and is fed in the longitudinal direction along with the circumference of the tape feed belt and discarded. Wipe off the highly viscous fluid discarded on the belt. (13) The discarding device according to the item (12), wherein a friction coefficient of the tape feeding belt is larger than a friction coefficient of the discarding belt. According to this section, a friction force larger than the friction force between the pull-out portion and the waste belt is obtained between the pull-out portion of the roll tape and the tape feed belt. Therefore, when the tape feed belt is rotated by the rotation of the rotating body, the drawer portion is reliably fed in the longitudinal direction by the movement of the tape feed belt, and the high-viscosity fluid discarded on the waste belt is wiped off. . (14) The discarding device according to any one of (9) to (13), which includes a recovery device for recovering a used portion of the roll tape. The roll tape may be wound, for example, by a take-up reel, or may be housed in a housing box. (15) The discarding device according to item (14), wherein the recovery device includes a storage box for storing the used portion of the roll tape. If the used part of the roll tape is stored in the storage box, it can be easily recovered.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings, taking as an example the case where an adhesive is applied to a printed wiring board. In FIG. 1 and FIG. 2, reference numeral 10 is a base that is an apparatus main body of an adhesive application device, which is a type of high-viscosity fluid application device. A printed wiring board moving unit 14 for holding a printed wiring board 12, which is a circuit board as an application target, on the base 10 and moving the printed wiring board 12 in the horizontal Y-axis direction (vertical direction in FIG. 1), a plurality of, for example, It has first, second and third coating heads 16A, 16B and 16C,
An adhesive application unit 18, which is a high-viscosity fluid application unit that applies an adhesive to the printed wiring board 12 by moving in the X axis direction (horizontal direction in FIG. 1) that is horizontal and is orthogonal to the Y axis direction, is provided. . In this highly viscous fluid coating device, a horizontal XY coordinate plane is set for the entire device, and the two XY coordinate planes are orthogonal to each other in this XY coordinate plane.
One of the axes is the X axis and the other is the Y axis.

A loading device 22 is provided on the base 10 in parallel with the X-axis direction for loading the printed wiring board 12 into the printed wiring board moving unit 14, and the printed wiring board 12 is carried out from the printed wiring board moving unit 14. And a carry-out device 24 for carrying out. Each of the carry-in device 22 and the carry-out device 24 is composed of a belt conveyor, and a pair of guide rails 26 and 28, conveyor belts (not shown) provided on the guide rails 26 and 28, respectively, and a pair of the conveyors. It has a belt circulating device (not shown) for synchronously rotating the belt.

The printed wiring board 12 is placed on a pair of conveyor belts and is conveyed while being guided by a pair of guide rails 26 and 28 by the conveyor belts being rotated. One of the guide rails 26 is a fixed guide rail that is fixed in position, and the other guide rail 28 is a movable guide rail that can be moved toward and away from the fixed guide rail. Hereinafter, the guide rail 26 will be referred to as the fixed guide rail 26, and the guide rail 28 will be referred to as the movable guide rail 28. The movable guide rail 28 is moved in the Y-axis direction by an approaching / separating device (not shown) or a conveyor width changing device, so that the space between the movable guide rail 28 and the fixed guide rail 26 is equal to the printed wiring board 12.
Is adjusted according to the width of.

The printed wiring board moving unit 14 includes a Y-axis slide 40 (see FIG. 2) provided on the base 10 so as to be movable in the Y-axis direction. The Y-axis slide 40 is shown in FIG.
1 includes a Y-axis slide movement motor 42 shown in FIG. 1, a ball screw 44 as a feed screw, and a nut (not shown).
The shaft slide moving device 46 is moved in the Y-axis direction while being guided by a guide device including a guide rail 48 that is a pair of guide members. A pair of support walls 52, 54 extending in the X-axis direction are provided on the upper surface of the Y-axis slide 40, and a belt or the like for carrying the printed wiring board 12 is provided on each. Although not shown, a positioning support device is provided on the Y-axis slide 40 to position and support the printed wiring board 12 in a horizontal posture, and an adhesive is applied to the surface or the upper surface thereof. The adhesive application surface 56 (see FIG. 5) as the application target surface is horizontal.

The adhesive application unit 18 will be described. As shown in FIG. 1, a base 62 supported by a pair of columns 60 is provided on the base 10. The base 62 is located above the printed wiring board moving unit 14, and an X-axis slide 64 is provided on the base 62 so as to be movable in the X-axis direction. The X-axis slide 64 includes a pair of guide rails 74, which are guide members, by an X-axis slide moving device 72 including an X-axis slide moving motor 66 that is a drive source, a feed screw ball screw 68, and a nut 70 (see FIG. 4). It is moved in the X-axis direction while being guided by.

On the X-axis slide 64, the coating head 1 is provided.
6A, 16B, 16C are respectively provided so as to be able to ascend and descend and rotatable about their vertical axes, and a head elevating device 8 as an approaching / separating device for approaching and spacing the coating heads 16A, 16B, 16C from the printed wiring board 12.
0, a head rotating device 82 for rotating about a center line or a vertical axis is provided, and by moving the X-axis slide 64, the coating heads 16A, 16B, 16C and the like are moved in the X-axis direction. The X-axis slide 64 and the X-axis slide moving device 72 form a head moving device 84. Coating heads 16A, 16B, 16C, lifting device 80
The configuration of the rotation device 82 is the same as that of the high-viscosity fluid application device described in Japanese Patent Publication No. 5-18633, and will be briefly described. Also, three coating heads 16A, 16B, 1
The configuration of 6C is the same, and one will be described as a representative.

As shown in FIG. 4, a Z-axis slide 90 is provided on the front surface of the X-axis slide 64 so as to be movable in the Z-axis direction, and is moved in the Z-axis direction by a Z-axis slide moving device 92. . The Z-axis direction is the X-axis direction and the Y-axis direction.
It is a direction perpendicular to the axial direction, and is a vertical direction in the illustrated example. The Z-axis slide moving device 92 uses a Z-axis slide moving motor 94 as a drive source, and the rotation of the Z-axis slide moving motor 94 is converted into a vertical movement by a gear, a fan gear, a pinion and a rack (not shown), An elevating member 96 provided integrally with the rack is moved up and down, and a Z-axis slide 90 connected to the elevating member 96 by a connecting member 98 is guided and moved up and down by a guide device including a guide rail 100 serving as a guide member. , The coating head 16A held by the Z-axis slide 90 is moved up and down.
It should be noted that when the elevating member 96 is excessively lowered, the spring member 102, which is an elastic member, is compressed and the Z-axis slide 90 and the elevating member 9 are moved.
6 is allowed by being moved relative to each other.

The coating head 16A, as shown in FIG.
Discharge nozzle 110 and syringe 11 as a highly viscous fluid container
2 and. The discharge nozzle 110 is formed by fixing one discharge pipe 116 to the tip of a cylindrical holder 114.
The holder 114 is an adapter 118 fixed to the syringe 112.
It is fitted so as to be relatively non-rotatable with and is fixed by a nut 120. When the discharge pipe 116 is replaced, the holder 114 is replaced. Further, the holder 114 is provided with a stopper 122, which abuts on the printed wiring board 12 at the time of applying the adhesive to secure a certain gap between the holder 114 and the discharge pipe 116. The diameters of the discharge pipes 116 are different in the three coating heads 16A, 16B, 16C, but they may be the same.

The syringe 112 has a cylindrical shape with a bottom, contains an adhesive which is a kind of highly viscous fluid, and its opening is closed by a cap 130, and the syringe 11
The space in 2 is connected to the pressurized air supply source 274 (see FIG. 6) by the connection fitting 132 and the hose 134 (see FIG. 4). By switching the electromagnetic directional control valve 136 (see FIG. 8) provided in the middle of the hose 134, the syringe 1
12 is selectively made to communicate with the pressurized air supply source 274 and the atmosphere, and when pressurized air is supplied, the adhesive is applied to the holder 11.
4 and the discharge pipe 116, and is applied to the adhesive application surface 56 of the printed wiring board 12. The adhesive is
For example, it is applied in spots.

The coating head 16A is provided on the Z-axis slide 90 so as to be relatively rotatable and not relatively movable in the axial direction. The head rotating device 82 includes the head rotating motor 1
40 as a drive source, and the rotation of the coating head 1 via a pulley 142, a belt 144 (see FIG. 4), a small diameter gear 146 (see FIG. 3), and a large diameter gear 148 (see FIGS. 3 and 5).
It is transmitted to 6A and rotated about the vertical axis. In the coating head 16A, for example, one discharge nozzle 110 may be provided with two discharge pipes 116. In this case, the coating head 16A is rotated so that the two discharge pipes 116 are aligned in a different direction. be changed.

As shown in FIG. 3, the adhesive application unit 18 is also provided with a reference mark camera 160 as an image pickup device for reading a plurality of reference marks (not shown) provided on the printed wiring board 12. . In the present embodiment, the fiducial mark camera 160 is composed of a CCD camera and is a surface image pickup device.
The shaft slide 64 is provided at a position adjacent to the coating heads 16A, 16B, 16C. Further, in the present embodiment, a black and white camera is used. An illumination device 162 is provided together with the reference mark camera 160 so as to illuminate a subject. The reference mark camera 160 takes an image of the reference mark before the application of the adhesive to the printed wiring board 12 is started, and the X-axis of a plurality of application positions set on the adhesive application surface 56 based on the image pickup data. Each positional deviation in the Y-axis direction is obtained, and the adhesive is applied accurately.

A pair of support walls 5 for the Y-axis slide 40.
The outer surface of one of the support walls 52, 54,
And, as shown in FIG. 7, a discarding device 180 is provided. In FIG. 6, the illustration of the support wall 52 is omitted. The discarding device 180 includes a discarding belt 182, a circulating drive device 184, and a removing device 186. The discard belt 182 has an endless track shape, and a plurality of feed holes 188 are provided at equal intervals along both edges thereof, and in the feed holes 188, a drive sprocket 190 serving as a rotary winding body, Tooth 19 of driven sprocket 192
4 and is wound around the sprockets 190 and 192.

The drive sprocket 190 and the driven sprocket 192 are supported by brackets 196 and 197 (see FIG. 7) provided on the support wall 52 so as to be rotatable about an axis parallel to the Y-axis direction. The drive sprocket 190 is a belt circulation motor 198 that is a drive source.
Is attached to the output shaft 200 of
The drive sprocket 190 is rotated by the belt circulation motor 198, so that the scrap belt 182 is rotated.
Is circulated. In the present embodiment, the belt circling motor 198, the driving sprocket 190, the driven sprocket 192 and the like constitute the circling driving device 184.
The belt circulating motor 198 is configured by a step motor in this embodiment. The step motor is a motor capable of controlling the rotation angle with high accuracy.
The width direction of the discard belt 182 becomes parallel to the Y-axis direction,
The longitudinal direction is provided in a posture parallel to the X-axis direction, and is rotated in the X-axis direction by the rotation of the sprockets 190 and 192.

The discard belt 182 is made of rubber, which is a kind of flexible material, and has an outer surface 204 and an inner surface 206 each of which is a kind of synthetic resin and has a low coefficient of friction and adhesion. The outer surface 204 constitutes a scrap surface, which is coated with polytetrafluoroethylene having a property that the agent is hard to adhere and is chemically stable to the adhesive. The discard surface is made of polytetrafluoroethylene. Later, outer surface 2
04 is referred to as a discard surface 204. The discard surface 204 is a smooth surface, and is white in this embodiment.

An inner side surface 206 of the discard belt 182 opposite to the discard surface 204 is supported by a support base 210 as a backup member. The support base 210 has a flat support surface 212, and the support wall 52 is attached to the support surface 21.
2 is provided so as to be upward and horizontal, and supports the inner side surface 206 horizontally from below. Discarded surface 20
Of the four, the portion between the drive sprocket 190 and the driven sprocket 192, which is located on the upper side, is supported by the support base 210. Support surface 21
No. 2 has a width larger than the discard belt 182 and is coated with polytetrafluoroethylene to form a low friction surface having a low friction coefficient.

The removing device 186 is adapted to wipe off the adhesive discarded on the discard surface 204 with the roll tape 220. The roll tape 220 is formed by winding a longitudinal wiping tape, which is a type of wiping sheet, around the reel 224 in a roll shape, and in the present embodiment, is made of paper, which is a type of porous material. The wiping tape is
It may be made of cloth. The reel 224 has a shaft portion 225, and a pair of disk-shaped side wall portions 228 extending outward from the shaft portion 225 in the radial direction. A pair of side walls 228
As shown in FIG. 7, the shaft portions 225 are provided at a distance from each other, a wiping tape is wound around the shaft portions 225, and the pair of side wall portions 228 prevent the roll tape 220 from collapsing. . The reel 224 is rotatably supported on the shaft portion 225 by a bracket 226 (see FIG. 7) provided on the support wall 52 so as to be rotatable about an axis parallel to the rotation axis of the drive sprocket 190, and the roll tape 220 is pulled out. The section 230 is fed in the longitudinal direction by the tape feeding device 222.

The pull-out portion 230 is wound around a pressing roller 232, which is a kind of a pressing rotary member, from below and is reversed in direction, passes above the roll tape 220, and is sandwiched between a pair of feed rollers 234 and 236. It is guided to the storage box 240 of the recovery device 238.

The pressing roller 232 is used for the waste belt 18
A bracket provided on the support wall 52 at a position above the upper end 2 of the support base 210 in a direction parallel to the belt winding direction and at a position corresponding to the end on the side closer to the roll tape 220. 250 (see FIG. 7) supports the drive sprocket 190 so as to be rotatable about an axis parallel to the axis of rotation and vertically movable. Rotating shaft 2 in which pressing roller 232 is attached so as not to rotate relatively
52 is fitted in a long hole (not shown) provided in the bracket 250 in the vertical direction so as to be rotatable and relatively movable in the vertical direction. In the present embodiment, the pressing roller 232 is made of rubber, which is a kind of material having a high friction coefficient, and the surface thereof has a high friction coefficient. The pressing roller may be made of rubber, which is a kind of high friction coefficient material, only on its surface, and may be provided with a high friction coefficient surface.

The pressing force of the pressing device 260 is applied to the pressing roller 232, and the drawer portion 230 is elastically pressed against the scrap belt 182. There is a support base 210 on the side opposite to the pressing roller 232 with respect to the discard belt 182 and the pull-out portion 230, and the pressing force of the pressing device 260 is received by the support 210, and the discard belt 182 is in a horizontal posture. The drawer 230 is pressed. In the present embodiment, the pressing device 260 includes an air cylinder 266 as a fluid pressure cylinder which is a type of fluid pressure actuator. The air cylinder 266 is supported by a bracket 268 provided on the support wall 52 so as to be rotatable about an axis parallel to the rotation axis of the drive sprocket 190, and the piston rod 270 is opposed to the rotation axis 252 of the pressing roller 232. It is rotatably engaged.

The air cylinder 266, in this embodiment, is
It is a double-acting type, and as shown in FIG. 6, the two air chambers are pressurized by switching the electromagnetic directional control valve 276 provided between the two air chambers and the pressurized air supply source 274. The piston rod 270 is expanded and contracted by selectively communicating with the air supply source 274 and the atmosphere. As a result, the pressing roller 232 is moved toward and away from the discard belt 182, and the pull-out portion 230 sandwiched between the push belt 182 and the discard belt 182.
Is elastically pressed against the scraping surface 204 to apply a wiping pressure to wipe the adhesive, or the scraping belt 18
It is separated from 2.

Of the two air chambers of the air cylinder 266, the piston rod 270 is retracted into the cylinder housing by the supply of air, and the pressing roller 232 is closer to the discard belt 182 and the electromagnetic direction switching valve. A pressure control valve 278 is provided between the pressure control valve 276 and the pressure control valve 276, and the pressure of the pressurized air supplied to the air chamber is controlled. In this embodiment, the operator adjusts the atmospheric pressure by operating the pressure adjusting valve 278.
As a result, the pressing force that presses the drawer portion 230 against the scraping surface 204 is arbitrarily adjusted, and the frictional force between the drawer portion 230 and the scraping surface 204 or the adhesive wiping pressure is adjusted. The pressure control valve 278 is a pressure control valve device and constitutes a pressing force control device or a pressure control device.

The pair of feed rollers 234 and 236 are
Bracket 290 provided on the support wall 52 (see FIG. 7)
Thus, the drive sprocket 190 is rotatably supported around an axis parallel to the axis of rotation of the drive sprocket 190. The feed rollers 234 and 236 are attached to the rotation shafts 292 and 294, which are rotatably supported by the bracket 290, such that they cannot rotate relative to each other. The feed roller 236 is supported by the bracket 290 via the rotary shaft 294 so as to be able to approach and separate from the feed roller 234, and also approaches the feed roller 234 by a tension spring 296 as an elastic member which is a kind of biasing device. The pull-out portion 230 is elastically sandwiched between it and the feed roller 234. The surface of the feed roller 236 is coated with polytetrafluoroethylene, which is a kind of material having a low friction coefficient, to form a low friction coefficient surface.

The tape feeding device 222 is a roller rotation driving device 300 for rotating the pressing roller 232.
including. The roller rotation drive device 300 uses the belt circulation motor 198 as a drive source. In the present embodiment, the tape feeding device 222 and the winding drive device 184 share a drive source. As shown in FIG. 7, the output shaft 200 of the belt circulating motor 198 is
The timing pulley 302 is attached so as not to be relatively rotatable, and the timing belt 306 is wound around the timing pulley 302 and the timing pulley 304 attached to the rotation shaft 252 of the pressing roller 232 so as not to be relatively rotatable. The rotation of the belt circulation motor 198 is transmitted to the pressing roller 232 by the rotation transmission device including the timing pulleys 302 and 304 and the timing belt 306. In the present embodiment, the belt circulating motor 198 and the timing pulley 30
2, 304 and the timing belt 306 constitute a roller rotation driving device 300.

Another timing pulley 312 is integrally provided on the timing pulley 304. The timing pulley 312 includes a timing pulley 312 and a timing pulley 314 mounted on a rotary shaft 292 supporting the feed roller 234 so as not to rotate relative to each other. A timing belt 316 is wound between them, and by the rotation transmission device configured by them,
The rotation of the belt circulating motor 198 is transmitted to the feed roller 234, and the feed roller 234 is rotated in the same direction at the same time as the pressing roller 232. The feed roller 234
Although not shown in the figure, the diameter of is slightly larger than the diameter of the pressing roller 232. In the present embodiment, the support wall 52 constitutes the device body of the discarding device 180. It may be considered that the bracket 196 and the like for supporting the drive sprocket 190 and the like also constitute the apparatus main body together with the support wall 52. The timing pulley 302 and the like are a kind of rotating body. The timing belt is a kind of a winding body that is wound around a rotating body.

A tape end detection device 330 as a wiping sheet remaining amount detection device for detecting that the wiping sheet is small in the portion adjacent to the reel 224 in the feeding path of the pull-out portion 230 of the roll tape 220. Is provided. The tape end detection device 330 is attached to the support wall 52. Tape end detection device 3
In the present embodiment, 30 is provided with a reflection type photoelectric sensor and detects the tape end based on the amount of light received by the light receiving section. Therefore, the roll tape 220
Is different in optical properties between the end portion and the portion closer to the start end portion than the end portion, for example, the end portion is colored black,
The part closer to the start end than the end is white.

The photoelectric sensor includes a light emitting portion and a light receiving portion,
Light is emitted from the light emitting unit toward the pull-out unit 230, and the reflected light from the pull-out unit 230 is received by the light-receiving unit. However, when the roll tape 220 has a large remaining amount and the pull-out unit 230 is white, the light-receiving unit is While the amount of received light is large, the remaining amount is small, the black end portion is pulled out from the reel 224, and when reaching the tape end detection device 330, the amount of reflected light is small and the amount of light received by the light receiving unit decreases. Therefore, if the amount of received light is compared with the set value and becomes less than or equal to the set value, the drawer unit 2
It can be seen that the black end of the roll tape 220 is detected and the remaining amount of the roll tape 220 is low.

The present adhesive application device is controlled by the control device 350 shown in FIG. The control device 350 is mainly composed of a computer 352.
The PU 354, the ROM 356, the RAM 358, the input port 360 and the output port 362 are connected by a bus line. Various detectors and computers are connected to the input port 360, including an image processing computer 368 for analyzing the data of the image captured by the tape end detection device 330 and the reference mark camera 160. The output port 362 is connected to the Y-axis slide movement motor 42 and the like via the drive circuit 370,
Various actuators are connected. Motor 42,6
6, 94, 140 are servo motors in this embodiment. The servo motor is a motor capable of controlling the rotation angle with high accuracy, and a step motor may be used instead of the servo motor. The rotation angle of the motor 42 and the like is detected by an encoder 380 that is a type of rotation angle detection device, as is representatively shown for the motor 42.

The output port 362 also has a drive circuit 37.
The notification device 390 and the display device 392 are connected via 0. The notification device 390 is configured to issue an alarm by, for example, sounding a buzzer, and to notify the user. The display device 392 includes a display screen and is configured to notify by an image such as characters and figures. There is. The display device 392 is also considered to be a type of notification device. The notification device 390 may be a device that notifies by voice. Further, the RAM 358 stores various programs and data such as a main routine (not shown), a program for scraping the scrap belt 182, a program for applying an adhesive to the printed wiring board 12, and the like. ing.

Next, the operation will be described. In the adhesive application device, the adhesive is discarded on the disposal belt 182 prior to the application of the adhesive on the printed wiring board 12. In addition to the original application of the adhesive, that is, the application of the adhesive to a plurality of mounting positions on the adhesive application surface 56 for mounting the electronic component on the printed wiring board 12, the adhesive application unit 18 The ejection of the adhesive is performed here, and includes preliminary ejection and trial ejection. Here, the disposal is performed on the disposal surface 204 of the disposal belt 182, which is a surface other than the adhesive application surface 56. Preliminary ejection is a waste ejection to remove the cured adhesive when the adhesive in the vicinity of the ejection nozzle 110 in the syringe 112 or in the ejection nozzle 110 is cured so that ejection is normally performed. The trial ejection is a discarding operation performed to measure the ejection state of the adhesive in a state where the ejection is normally performed, for example, to measure the ejection amount and set the ejection condition so that the application is normally performed.

Preliminary striking and trial striking are already known as described in, for example, Japanese Patent Publication No. 5-65229, and will be briefly described. Preliminary hitting is performed, for example, prior to the start of a series of adhesive application work on a plurality of printed wiring boards 12, or even after the adhesive application work is started, application is continued for a set time or longer. If not done, it is done. Trial hitting is a preset time,
For example, it is performed for each printed wiring board or for each set number. In addition, it is often performed together with the preliminary striking.

The discarding is performed by the three coating heads 16A and 16A.
This is performed for each of B and 16C. When performing the discarding, the discarding device 180 moves the discarding belt 182 and the coating heads 16A, 16A by moving the Y-axis slide 40.
The positions of B and 16C are moved to the same position in the Y-axis direction. In that state, the coating heads 16A, 16
B and 16C are moved in the X-axis direction by the head moving device 84 and discarded.

The discarding by the coating head 16A will be typically described. When both preliminary hitting and discarding are performed, first, preliminary hitting is performed. The coating head 16A is moved by the head moving device 84 onto the discard surface 204 to discard the adhesive. The discarding is a portion facing upwards of the discarding surface 204, a portion separated from the pull-out portion 230 of the roll tape 220, supported by the support base 210 from below and made horizontal, and the coating heads 16A and 16B. , 16
It is performed on a discardable surface or a discarding surface that is a surface that can be discarded by C. An area in which the discardable surface is located and which can be discarded is referred to as a discardable area. At the time of discarding, the coating head 16A and the discarding belt 182 are moved relative to each other according to a preset discarding program,
The adhesive is sequentially discarded at a plurality of disposal positions set on the disposable surface. If a plurality of discarding positions are set on the discarding surface 204 in parallel with the X-axis direction in one row, the coating head 16A is moved in the X-axis direction to perform the discarding, and If a plurality of columns are set in the Y-axis direction, one column is discarded in the Y-axis direction, then the column is changed, and the adjacent columns in the X-axis direction are discarded. The discard belt 182 is moved in the Y-axis direction every time the discard is performed, and the discard position is adjacent to the discard position in the Y-axis direction. If the scraping is performed in one row parallel to the axial direction, the coating head 16A is moved in the X-axis direction, and the scraping is performed in the adjacent row in the X-axis direction.

If the preliminary striking is performed the set number of times, the trial striking is performed. Also in the trial shot, the adhesive is discharged by the coating head 16A and the coating head 16A and the discard belt 1 are used.
This is performed a set number of times by relative movement with 82. When the test shot is performed, the reference mark camera 160 is moved above the test shot adhesive by the movement of the X-axis and Y-axis slides 64 and 40 every time the test shot is made. Image the adhesive. In the present embodiment, the discard surface 204 of the discard belt 182 is white.
There is a large difference in brightness from the adhesive colored in red, an image with a large contrast is obtained between the adhesive and the scrap surface 204, and the image of the adhesive can be obtained accurately.

When the trial ejection is performed a set number of times, the ejection state of the adhesive, for example, the ejection amount is detected based on the image data of the plurality of adhesives obtained by the image pickup. The discharge amount is obtained, for example, by the outer surface area of the discarded adhesive in a plan view, and an average value of the discharge amounts of the adhesives by a plurality of trial shots is obtained and compared with a reference discharge amount. The coating conditions are modified so that the discharge amount becomes the reference amount. For example, the supply time of the pressurized air to the syringe 112 is corrected. This reference amount is set with a certain width. Although detailed description is omitted,
The discharge pipe 11 based on the images of a plurality of adhesives that have been trial-stripped
The positional deviation of 6 may be obtained and corrected when the adhesive is applied to the printed wiring board 12.

When the series of planned scraping of the coating head 16A is completed and the detection of the coating amount is completed, the adhesive scraped on the scraping surface 204 is immediately removed. Here, the series of discarding is a series of discarding when the preliminary firing or the trial firing is performed only when the preliminary firing or the trial firing is performed a preset number of times.
If both pre-stripping and truncation occur, then their execution is a series of truncations. In any case, when the adhesive is removed, the scraping belt 182 is circulated and the pull-out portion 230 of the roll tape 220 is sent to pull out the adhesive attached to the scraping surface 204 by scraping. It is wiped off by the part 230.

At the time of removing the adhesive discarded on the scraped surface 204, the belt circulating motor 198 is started, and the sprockets 190 and 192 scrape the scraped belt 182 and the adhesive on the scraped surface 204. The drawn part is the drawing part 23
It is a direction to orbit in the direction toward 0, and is rotated clockwise in FIG. Since the support surface 212 of the support base 210 is coated with polytetrafluoroethylene, the friction coefficient between the waste belt 182 and the support surface 212 is low, and the waste belt 182 has the support surface 2
It is supported by 12 and sent smoothly.

The discard belt 182 has a length long enough to evacuate the entire portion of the discard surface 204 where the adhesive has been discarded from the discard area. I will be sent. The number of discards, the discard position, and the like in a series are set in advance, and the discard belt 18 of the portion where the discard surface 204 is discarded is set based on them.
The length in the orbiting direction of 2 is obtained, and the drive amount of the belt orbiting motor 198 is set so that the discard belt 182 can be orbited by the length. The discard belt 182 is wound around the sprockets 190 and 192 and is fed by the rotation thereof, so that the scrap belt 182 can be reliably rotated without slipping and can be fed without waste by a preset length. Note that the discarding is performed from the downstream end in the belt circulation direction when the adhesive is removed from the portion of the discarding surface 204 located in the discardable area.
Even if the adhesive is discarded only in a part of the portion located in the disposable area, the adhesive is wiped from the portion where the disposal is performed to the extraction portion 230.

Orbiting drive device 184 and tape feeding device 22
2 shares a drive source, and at the same time as the discard belt 182 is rotated, the pull-out portion 230 of the roll tape 220 is sent in the longitudinal direction. Belt rotation motor 19
8 is operated, the rotation thereof is transmitted to the pressing roller 232 by the timing pulleys 302, 304 and the timing belt 306, and the pressing roller 2 is pressed.
32 is rotated, and the timing pulley 31
2, 314, the timing belt 316 transmits the rotation to the feed rollers 234, and the feed rollers 234, 236.
Is rotated and the drawn-out portion 230 is fed in the longitudinal direction, and the adhesive that has been discarded on the scraped surface 204 is wiped off and removed by the portion of the drawn-out portion 230 that is pressed against the scraped surface 204. .

The pressing roller 232 and the feed roller 234 are rotated in the same direction as the sprockets 190 and 192,
A portion of the pull-out portion 230 on the reel 224 side of the pressing roller 232 is disposed by the pressing roller 232 on the scrap surface 204.
Sent to the part that is pressed against the scrap surface 20
The adhesive of No. 4 is moved in the direction opposite to the moving direction of the part where the adhesive is discarded and toward the part. The pressing roller 232 is made of rubber and has a high coefficient of friction on the surface. The friction coefficient between the pressing roller 232 and the drawing portion 230 is the same as the scraping surface 204 coated with polytetrafluoroethylene and the drawing portion. The coefficient of friction with respect to 230 is higher than that of the feed roller 23.
It is sent by the rotation of 4, 236 and is surely sent by the rotation of the pressing roller 232. Feeding roller 23
Since the diameter of No. 4 is slightly larger than the diameter of the pressing roller 232, the feed length by the feed roller 234 is slightly larger than that of the pressing roller 232, and the pull-out portion 230 maintains the stretched state and does not sag in the longitudinal direction. Sent to. The pressing roller 232 can be said to be a component of the pressing device 260 or the tape feeding device 222.

In this embodiment, the sprocket 19 is used.
0, 192, pressing roller 232, feed roller 234,
By setting the diameters of the timing pulleys 302, 304, 312, and 314, the feeding speed of the pull-out portion 230 is made slower than the circulation speed of the discard belt 182, and the feeding length (feed speed) of the pull-out portion 230 is reduced. It is made shorter (slower) than the lap length (circulation speed) of the striking belt 182. The ratio of the two feed lengths (speeds) is set, for example, according to the amount of adhesive to be discarded. The discarded adhesive is sandwiched between the pulling-out portion 230 and the discarding surface 204 when it reaches the portion pressed by the pressing roller 232 of the pulling-out portion 230 by the movement of the discarding belt 182. It is squeezed and squeezed into the drawer 230, and is wiped off the scrap surface 204. Therefore, the extraction portion 230 required for wiping the adhesive increases as the amount of the waste discharged by one-time ejection of the adhesive, including preliminary ejection and trial ejection, increases.
Has a long length, and the above-mentioned ratio is set so that the pull-out portion 230 is sent long enough to wipe off the adhesive even with the maximum scrap amount. Depending on the setting of the ratio, the pull-out portion The feed length of 230 may be longer, shorter, or the same as the lap length of the discard belt 182.

As described above, when the pull-out portion 230 is fed in the longitudinal direction and the waste belt 182 is rotated, the portion of the pull-out portion 230 that is pressed against the waste surface 204 by the pressing roller 232 is the waste surface 204. While moving in the opposite direction, the adhesive agent adhering to the scraping surface 204 is wiped off, the feeding direction is reversed by the pressing roller 232, and the adhesive agent on the scraping surface 204 is separated from the wiped portion. Therefore, the portion of the pull-out portion 230 wiped off the adhesive does not face the portion of the waste surface 204 wiped off the adhesive, and both are in contact with each other to remove the adhesive on the waste surface 240. There is no risk that the cleaned parts will get dirty. The portion of the discard surface 204 against which the extraction portion 230 is pressed is supported from below by the support base 210, and the extraction portion 230 can stably wipe off the adhesive attached to the disposal surface 204. In addition, even if the feed length of the pull-out portion 230 is shorter than the lap length of the scrap belt 182,
The adhesive that has been discarded on the discard surface 204 is drawn out by the pull-out portion 230.
When reaching the contact portion or the pressing portion with the scrap surface 204, the contact portion prevents the scrap surface 204 from moving together with the scrap surface 204 and is reliably wiped off. The pressing force of the pressing device 260 that presses the pull-out portion 230 against the scrap surface 204 is as described above.
Zero is sufficient to wipe the adhesive off the scrap surface 204, and is adjusted to a size that does not hinder the feeding of the drawer 230 and the circulation of the scrap belt 182. The discard surface 204 is coated with polytetrafluoroethylene and is a smooth surface. The adhesive is unlikely to bleed and adhere to the discard surface 204.
Completely removed by. When the adhesive discarded on the discard surface 204 is imaged by the fiducial mark camera 160, it is removed to the extent that it does not optically affect the imaging. In this way, the used portion of the roll tape 220, which is the pulled-out portion 230 where the adhesive is wiped off, is sent to the storage box 240 by the feed rollers 234 and 236, stored and collected. The feed roller 236 has
The surface of the used portion of the roll tape 220 on which the adhesive is attached is brought into contact, but the surface of the feed roller 236 is coated with polytetrafluoroethylene to make it difficult for the adhesive to attach. Feed roller 2
It is sent to the storage box 240 without sticking to 36.

When the storage box 240 is filled with the used portion of the roll tape 220, for example, the storage box 240
Is replaced with an empty housing box 240. Alternatively, the storage box 24
The used portion of the roll tape 220 accommodated in the 0 may be taken out of the accommodation box 240 to empty the accommodation box 240. At this time, if there is a remainder on the roll tape 220, 1
The pair of feed rollers 234 and 236 cuts the storage box 240 at the portion thereof and removes it from the storage box 240, or replaces the storage box 240.

If the portion of the discard surface 204 located in the disposable area is filled with the adhesive before the series of disposal by the coating head 16A is completed, the adhesive is immediately removed. When the total number of discards is set based on the area of the discard position, the discardable area of the discard surface 204, and the portion to be discarded, and when a series of discards is performed, a computer At 352, the number of times is counted. The number of discards performed on the discardable surface is counted, and when the total number of discards reaches the set number of times, the discarding is interrupted and the circulation drive device 184 causes the discard belt 182 to orbit and the drawing portion. 230
Is sent, and while the portion of the discard surface 204 where the adhesive is discarded is retracted from the discardable area, the adhesive is removed and the portion where the adhesive is not discarded is moved to the discardable area. It is moved to make it a scrapable surface, and the remaining scraps are made.

In this way, the endless belt-shaped waste belt 18
By disposing the adhesive in 2 and automatically removing it by the removing device 186, the disposal belt 182 is made ready for disposal again without the labor of the operator, and repeatedly used for disposal. You can Discarded surface 20
4 is coated with polytetrafluoroethylene, has high durability, and can be repeatedly discarded.

When the tape end detection device 330 detects the end of the roll tape 220, the notification device 390
Further, the display device 392 informs the operator that the roll tape 220 is low and it is time to refill. The notification device 390 gives a sound notification such as a buzzer sound, the display device 392 gives an upper display notification on the display screen, and the operator replenishes the roll tape 220 in accordance with these notifications. The empty reel 224 is removed from the bracket 226, and a new reel 224 holding the roll tape 220 is set on the bracket 226. At this time, the start end of a new roll tape 220 may be connected to the end of the roll tape 220 set previously, or the roll tape 220 set previously may be connected.
The remaining part of the roll may be removed from the removing device 184 and a new roll tape 220 may be set. The pull-out portion 230 of the roll tape 220 of the reel 224 newly supported by the bracket 226 is wound around the pressing roller 232 and is sandwiched between the pair of feed rollers 234 and 236. At this time, the pressing roller 232 is attached to the air cylinder 226.
The worker can easily wind the pull-out portion 230 around the waste belt 182 by separating the waste belt 182 from the waste belt 182. After the winding, the pressing roller 232 is moved toward the scrap belt 182 by the air cylinder 226, and the pull-out portion 230 is pressed against the scrap surface 204. The same applies not only when the roll tape 220 is replenished, but also when it is first set. When replenishing the roll tape 220, the storage box 2
If 40 is full of used portion of roll tape 220, discard it or place it in storage box 24, as described above.
Just replace 0. The tape end detection device 330 is
It is also considered to be a wipe sheet replenishment time detection device. In the present embodiment, the small remaining amount of the roll tape 220 leaves a sufficient margin to complete the removal of the adhesive, which is performed when it is detected and the necessity of replenishment is notified. To be detected. In the present embodiment, the position where the end portion of the roll tape 220 is colored black is set so that it can be detected with a margin that the remaining amount of the roll tape 220 is small.
Therefore, the removal of the adhesive is not interrupted, and the roll tape 220 is replenished after the removal.

In the above embodiment, the pressing device 260
Although the device is a device including the air cylinder 266, it may be configured by a spring member. The embodiment will be described with reference to FIG. It should be noted that components having the same operations as those of the above-described embodiment are designated by the same reference numerals to indicate the corresponding relationship, and description thereof will be omitted.

In this embodiment, the pressing device 404 is
It includes a tension coil spring 402 as a spring member that is an elastic member that is a kind of biasing device, and has one end supported by a bracket 400 provided on the support wall 52 and biases the pressing roller 232 downward. Therefore, the pressing roller 232 uses the urging force of the tension coil spring 402 to remove the pull-out portion 230 of the roll tape 220 from the scrap surface 20.
4, the pull-out portion 230 wipes the adhesive from the throw-away surface 204 when the throw-away belt 182 is rotated and when the pull-out portion 230 is fed.

The preload of the tension coil spring 402 is adjusted by the preload adjusting device, and the pull-out portion 230 is disposed on the scrap surface 2.
You may make it adjust the pressing force pressed on 04.

In each of the above embodiments, the roll tape 2
The pull-out portion 230 from 20 is fed by the rotation of the pressing roller 232 and the pair of feed rollers 234, 236, but it may be fed by the movement of the tape feed belt. The embodiment will be described based on FIGS. 10 and 11. It should be noted that components having the same operations as those of the embodiment shown in FIG. 1 to FIG. 8 are designated by the same reference numerals to indicate the corresponding relationship, and description thereof will be omitted.

The tape feeding device 452 of the removing device 451 of the discarding device 450 of this embodiment includes a tape feeding belt 454, which is a kind of endless track-shaped winding body, and a plurality of, three in the present embodiment, rotating bodies. 456,45 which is a kind of
8,460 and. The tape feed belt 454 is a timing belt, and three pulleys 456, 458, 46 are provided.
Two of the 0, pulleys 456 and 458, are timing pulleys, around which the tape feed belt 454 is wound.

These pulleys 456, 458 and 460 are rotatably supported by brackets 250 and 290, like the pressing roller 232 and the pair of feeding rollers 234 and 236, respectively, and the tape feeding belt 4
The pulley 456, which is one of the two pulleys 456 and 458 around which 54 is wound, is arranged above the discard surface 204 of the discard belt 182 so as to be movable in the vertical direction. In the present embodiment, the tape feed belt 454 is made of rubber, which is a kind of material having a high friction coefficient, and has a larger friction coefficient than the scrap belt 182 having the surface coated with polytetrafluoroethylene. ing. The pull-out portion 230 of the roll tape 220 is wound around the outside of the tape feed belt 454 from below, is wound along the upward surface, and is elastic between the pulleys 458 and 460 via the tape feed belt 454. Sandwiched between the tape feed belt 454 and the tape feed belt 454. Further, like the pressing roller 232, the pulley 456 is pressed against the scrap belt 182 by the pressing device 260 with the pull-out portion 230 pulled out from the roll tape 220 interposed therebetween, and the timing pulleys 302, 304. The rotation of the belt circulation motor 198 is transmitted by the timing belt 306. The pulleys 458 and 460 are feed pulleys, and the pulley 456
Is a pressing pulley which is a kind of pressing rotating body and is a feed pulley. In addition, in FIG.
In order to clarify that 0 is wound around the tape feed belt 454, the pull-out portion 230 is illustrated as being separated from the tape feed belt 454, but in reality, the pull-out portion 230 is not shown. It is closely attached to the upward surface of the bolt 454.

When the belt circulating motor 198 is activated, the scrap belt 182 is rotated, and the pulley 456 is rotated by the rotation transmitted by the timing pulleys 302, 304 and the timing belt 306, and the tape feed belt is rotated. While the 454 is rotated, the pulleys 458 and 460 are rotated, and the pull-out portion 230 is sent in the longitudinal direction, while the scrap belt 182 is moved.
Wipe off the adhesive on the. The pull-out portion 230 is wound around and supported by the tape feed belt 454, and is reliably fed by the movement of the tape feed belt 454. In addition, the coefficient of friction of the tape feed belt 454 is 20
4 is larger than the friction coefficient of No. 4 and the frictional force between the tape feed belt 454 and the pull-out portion 230 is
Is larger than the frictional force between the scraping belt 204 and the scraping surface 204 of the scraping belt 182, and the pull-out portion 230 is more reliably fed as the tape feeding belt 454 moves. In this embodiment, the belt circulation motor 198 and the timing pulley 30 are used.
2, 304, timing belt 306, pulley 456,
Reference numeral 458 constitutes a tape feed belt orbiting drive device.

Although the belt circulation motor 198 is a step motor in each of the above embodiments, it may be a DC motor or an AC motor. The motor is operated for the set time, and the scrap belt is rotated for the set length. Alternatively, it may be a servo motor.

The longitudinal wiping tape is not limited to the reel but may be wound around a shaft to be a roll tape.

Further, the rotating body which constitutes the rotation transmitting device for transmitting the rotation to the pressing roller 232, the feed roller 234, the pulleys 456, 458 and the like is not limited to the timing pulley, but other pulleys such as the V pulley and the flat pulley. ， It may be a sprocket. Further, the winding body wound around the rotating body corresponds to the rotating pair, and is, for example, a V belt, a flat belt, or a chain.

Further, in each of the above-mentioned embodiments, the pressing device is a device for pressing the wiping sheet on the waste belt, but it may be a device for pressing the waste belt on the wiping sheet.

Further, the scrap belt may be a belt made of stainless steel. In this case, it is desirable that the surface of the belt that forms the discarded surface be subjected to plain treatment so that the surface has no gloss. With the non-glossy, the light emitted during the imaging of the discarded high-viscosity fluid is not totally reflected, and it is possible to avoid the amount of reflected light being excessive and hindering the imaging of the high-viscosity fluid.

Further, all the waste belts may be made of synthetic resin. In that case, the whole waste belt may be made of synthetic resin such as polytetrafluoroethylene that is chemically stable against the waste and is hard to attach substances, or made of other synthetic resin. At least the scraped surface may be coated with polytetrafluoroethylene or the like so that the high-viscosity fluid can be easily wiped off and high durability can be obtained.

Furthermore, the cut-off surface is not limited to polytetrafluoroethylene, but polytrifluorochloroethylene,
Fluorine resin such as vinyl fluoride, vinylidene fluoride, dichlorodifluoroethylene, etc., and other than fluororesin, organic solvent, etc., made of chemically stable material against the material to be discarded Good.

The orbiting drive device and the tape feeding device may each have their own drive source. If the drive source is set separately, the orbiting speed of the scrap belt and the feeding speed of the wiping tape can be set to arbitrary values.
The ratio of the two can be set arbitrarily, and for example, the circulation speed of the scrap belt and the feeding speed of the wiping tape are adjusted according to the scrap amount. The larger the scrap amount, the larger the ratio of the wipe tape feed speed to the scrap belt orbital speed, and the longer the length of the wipe tape used for wiping the scrap amount. Make sure it is wiped off. Even when the orbiting drive device and the tape feeding device share a drive source, for example, if a transmission is provided, the ratio of the orbiting speed to the feeding speed can be changed to a plurality of types, but the type is limited. On the other hand, if the drive source is dedicated, it is easy to set the speed ratio.

Furthermore, the fact that the roll tape 220 is at the time of replenishment may be notified by lighting or blinking a lamp, or by at least one of sound notification and image notification. Good.

The photoelectric sensor forming the tape end detecting device for detecting the tape end of the roll tape 220 may be a transmission type photoelectric sensor. Since the light emitting portion and the light receiving portion are provided to face each other on both sides with the pull-out portion 230 sandwiched therebetween, while the light receiving amount is large when the white portion of the roll tape 220 passes, for example,
It can be seen that when the end portion colored in black is reached, the light reception of the light receiving portion is blocked and the amount of light reception is reduced, so that the remaining amount of the roll tape 220 is reduced. Or reel 22
The tape end may be detected at 4. For example, the pair of side wall portions 22 forming the reel 224.
8 is formed in the vicinity of the shaft portion 225 of each of the eight shaft portions 225 in parallel with the axis of the shaft portion 225, and through holes concentrically penetrating therethrough. The light emitting portion of the sensor and the light receiving portion on the side of the other through hole are respectively concentric with the through hole and concentric with each other. The roll tape 220 has a large remaining amount and the through hole has the roll tape 2
While being blocked by 20, the light receiving portion is prevented from receiving light, but if the roll tape 220 is reduced and the through hole is not covered by the roll tape 220, the light emitted from the light emitting portion can emit a pair of side wall portions. It is understood that the roll tape 220 has a small remaining amount as it is received by the light receiving portion through each of the through holes.

Further, the image pickup device for picking up an image of the highly viscous fluid may be a color image pickup device.

Further, in each of the above embodiments, the adhesive applying device is a device for ejecting the adhesive contained in the syringe from the ejection nozzle by supplying pressurized air. The coating device has not been published yet, but as described in the specification of Japanese Patent Application No. 2001-1983 relating to the present applicant, it can also be used as a device for discharging a high-viscosity fluid from a discharge nozzle by a pump including a screw. Good.

Further, the high-viscosity fluid applying device may apply the high-viscosity fluid not only in a spot shape but also in another shape, for example, in a strip shape. In that case, the preliminary striking may be performed in a spot shape, and the trial striking may be performed in a strip shape, or both may be performed in a strip shape.

Although some embodiments of the present invention have been described in detail above, these are merely examples, and the present invention is described in the above-mentioned [Problems to be solved by the invention, means for solving problems and effects]. Various modifications and improvements can be performed based on the knowledge of those skilled in the art, including the described embodiments.

[Brief description of drawings]

FIG. 1 is a plan view schematically showing an adhesive application device including a discarding device according to an embodiment of the present invention.

FIG. 2 is a front view schematically showing the adhesive application device.

FIG. 3 is a front view showing an adhesive application unit of the adhesive application device.

FIG. 4 is a side view showing the adhesive application unit.

FIG. 5 is a side sectional view showing an application head provided in the adhesive application unit.

FIG. 6 is a front view schematically showing the discarding device.

FIG. 7 is a plan view schematically showing the discarding device.

FIG. 8 is a block diagram schematically showing a control device that controls the adhesive application device.

FIG. 9 is a front view schematically showing a discarding device according to another embodiment of the present invention.

FIG. 10 is a front view schematically showing a discarding device according to another embodiment of the present invention.

FIG. 11 is a plan view schematically showing the discarding device shown in FIG.

[Explanation of symbols]

12: Printed wiring board 16A, 16B, 16C: Coating head 18: Adhesive coating unit 180: Discarding device 182: Discarding belt 184: Orbiting drive device 186: Removal device 198: Belt orbiting motor 204: Outside surface (Discarded surface) 210:
Support 220: Roll tape 222: Tape feeding device 230: Drawer 232: Pressing roller
238: Recovery device 240: Storage box 260: Pressing device 266: Air cylinder 278: Pressure control valve 350: Control device 402: Tensile coil spring 404: Pressing device 450: Discarding device 451: Removing device 452: Tape feeding device 454: Tape feeding belt 456, 458: Pulley

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4F041 AA02 AA05 AA06 AB01 BA04                       BA23 BA38                 4F042 AA02 AA06 AB01 BA02 CB10                       CB19 CC11 DH09                 5E319 BB01 BB05 CC61 CD01 CD25                       GG15

Claims (4)

[Claims] 1. A high-viscosity fluid coating device for discharging a high-viscosity fluid from a discharge nozzle to coat the surface to be coated, which is a device for discarding the high-viscosity fluid from the discharge nozzle to a portion other than the surface to be coated. The endless belt having an endless track, the outer surface of which constitutes the endless surface, the orbital drive device for orbiting the endless belt, and the removal for removing the high-viscosity fluid left over to the endless surface. Disposal device characterized by including a device. 2. The discarding device according to claim 1, wherein at least the discarding surface of the discarding belt is formed of polytetrafluoroethylene. 3. The discarding device according to claim 1, wherein at least the discarding surface of the discarding belt is a white surface. 4. The removing device wipes away a high-viscosity fluid discarded on the discard surface by a roll tape in which a longitudinal wiping tape as a wiping sheet is wound in a roll shape. 4. A tape feeding device for feeding a portion pulled out from a roll tape in a longitudinal direction, and the tape feeding device and the circling drive device share a drive source. Disposal device.