JP3120250U - Screen printing machine screen mask cleaning device - Google Patents

Abstract

A printing agent attached in a screen hole of a screen mask or a printing agent attached on the back side of the screen mask is completely removed.
An upper side cleaning device 1 and a lower side cleaning device 16 are provided. These are simultaneously reciprocated along the upper and lower surfaces of the screen mask. The upper side cleaning device 1 hangs the middle part of the wiping cloth 7 sent out from the wiping cloth supply roll 6 on the pressing base 13 of the wiping cloth. Then, the solvent is ejected from the solvent ejection port 14 at a predetermined timing. Thereafter, the soiled portion is taken up by the take-up roll 8 of the wiping cloth. The lower side cleaning device 16 first applies a solvent by the solvent applying device 26. Then, wipe with a wipe 29. Finally, suction is performed from the suction port 23 of the wiping cloth pressing table 22 and air is blown from the air ejection device 19 to accelerate drying.
[Selection] Figure 13

Description

  The present invention relates to a screen mask cleaning device for a screen printing machine.

  When printing with a screen printing machine, place a screen mask on a printed board such as a printed circuit board, spread a printing agent such as cream solder placed on the screen mask with a squeegee, and open screen holes provided in the screen mask. Printing on a predetermined position of the printing plate.

  If printing is repeated many times, a printing agent such as cream solder adheres to the screen hole of the screen mask and sticks or spreads around the screen hole on the back side.

  For this reason, it is sometimes necessary to clean the screen mask. In the past, this cleaning has been performed manually such as scraping with a scraper or the like after repeating printing to some extent, or wiping with a sponge or the like.

  However, in the case of the above-described manual operation, it is difficult to cleanly remove the printing agent stuck in the screen hole, and since both are manual operations by workers, the efficiency is poor.

  Also, especially when printing is fine, the screen holes are small, and the printing agent such as cream solder used is also fine, so the printing agent does not come out of the screen holes, and a considerable amount remains and sticks. . Further, in this case, since the screen hole is small, it is very difficult to remove the printing agent stuck to the inner surface.

  The present invention has been made in view of the above-described points, and at the same time as applying a solvent to the back side of the screen mask, a sufficient solvent is also applied from the top side of the screen mask and poured into the screen holes, and then the screen mask. Wipe the top and back of the screen with a wipe at the same time, so that the printing agent stuck in the screen hole of the screen mask, the printing agent spread around the screen hole on the back side of the screen mask, and the remaining on the upper surface of the screen mask Even if the printing is fine and the screen hole is small, and the printing agent is also fine, the printing agent in the screen hole can be completely dropped, A screen mask cleaning device that can be efficiently performed by automation. It is intended to provide cents.

  Thus, the gist of the present invention is that a wiping cloth supply roll around which an unused wiping cloth is wound, and a wiping cloth arranged in parallel with the wiping cloth supply roll and rotated at a predetermined timing. The wiper roll for wiping off the used part of the wiper, and the lower part of the supply roll for the wiper wipe and the take-up roll for the wiper are arranged around the middle part of the wiper and provided at the center of the lower surface. A wiping cloth presser base that ejects the solvent at a predetermined timing from the solvent jet outlet, and is intended to reciprocate integrally along the upper surface of the screen mask, and further, a supply roll for the wiping cloth, The upper side cleaning device which can raise and lower the wiping roll of the wiping cloth and the pressing base of the wiping cloth at a predetermined timing, and the wiping cloth A cylindrical wiping cloth pressing table that is hung around the middle and sucked at a predetermined timing from a suction port provided on the upper surface, and is arranged in parallel with the wiping cloth pressing table. An air ejection device configured to eject air at a predetermined timing from an air ejection port provided on the air ejection device, and the wipe cloth on the opposite side of the air ejection device and slightly below the wiping cloth pressing table A wiping cloth supply roll wound with an unused wiping cloth, arranged in parallel with the pressing table, and a wiping cloth winding roll that rotates at a predetermined timing to wind up used parts of the wiping cloth; And a solvent coating device provided with a solvent coating material on the upper surface, which is disposed between the wiping cloth pressing table and the wiping cloth supply roll so as to be parallel thereto. In order to reciprocate along the back surface of the tape, the solvent applicator is moved up and down at a predetermined timing, and the wiping cloth pressing base, the wiping cloth supply roll, and the wiping cloth winding roll are provided. A screen mask cleaning device for a screen printing machine comprising a lower side cleaning device that can be moved up and down at a predetermined timing.

  Since the present invention is configured as described above, the printing agent stuck in the screen hole of the screen mask, the printing agent spread around the screen hole on the back side of the screen mask, and the printing agent remaining on the upper surface of the screen mask. It can be dropped completely. In particular, even when the printing is fine and the screen holes are small and the printing agent is also fine, the printing agent in the screen holes can be completely removed. Also, the drying time after cleaning can be greatly shortened. In addition, since the work is automatically performed by the machine, the efficiency is much improved as compared with the case of the conventional manual work.

  The best mode for carrying out the present invention comprises an upper side cleaning device and a lower side cleaning device, and these are reciprocally moved along the upper and lower surfaces of the screen mask, respectively. The side cleaning device hangs the middle part of the wipe sent from the supply roll of the wipe on the wiper presser base, and ejects the solvent at a predetermined timing from the solvent outlet, and then winds the wipe. The lower side cleaning device first applies the solvent by the solvent application device and then wipes it with the wiping cloth, and finally sucks it from the suction port of the wiping base of the wiping cloth. The aim is to expedite drying by blowing air from an air blowing device.

Embodiments of the present invention will be described below with reference to the drawings.
1 is a front view of a screen printing machine showing the arrangement of the present invention, FIG. 2 is a side view of the screen printing machine showing the arrangement of the present invention, FIG. 3 is a front view of an upper side cleaning device, and FIG. 5 is an enlarged view of a portion in FIG. 4, FIG. 6 is a front view showing the lower side cleaning device with the support substrate driving mechanism omitted, FIG. 7 is a plan view thereof, and FIG. 9 is an enlarged sectional view taken along the line BB in FIG. 7, FIG. 10 is an enlarged sectional view taken along the line CC in FIG. 7, FIG. 11 is a schematic explanatory view of the lower side cleaning device, and FIG. FIG. 13 is an operation explanatory view of the present invention, and FIG. 13 is a longitudinal sectional view of a solvent coating device in the lower side cleaning device.

  In the figure, reference numeral 1 denotes an upper side cleaning device. Reference numeral 2 denotes a support substrate connected to a squeegee moving base in a drive mechanism that supports the squeegee and moves it up and down and horizontally.

  Reference numeral 3 denotes an elevating support substrate which is vertically movable with cylinders 4 and 4 which are attached in parallel to the lower portion of the support substrate 2 and fixed vertically to the support substrate 2. The elevating support substrate 3 is attached with a connecting plate 3a projecting downward at the center in the length direction.

  Reference numeral 4 denotes a support frame composed of parallel upper and lower plates 4a, 4a and side plates 4b, 4b provided in parallel to both ends of the plates 4a, 4a. It is connected. Further, the support frame 4 can be adjusted to the left and right inclinations with the screws 5.

  Reference numeral 6 denotes a wiping cloth supply roll around which an unused cotton wiping cloth 7 is wound. The wiping cloth supply roll 6 is rotatably supported between the side plates 4 b and 4 b of the support frame 4.

  8 is a wind-up roll for wiping cloth, and winds up a used part of the wipe 7 at a predetermined timing. The wiping cloth take-up roll 8 is disposed between the side plates 4b and 4b of the support frame 4 in parallel to the lower part of the wiping cloth supply roll 6 and is driven at an appropriate timing by a drive motor 9. It is driven by. In addition, 10 and 11 are pulleys, and 12 is a belt wound around these pulleys 10 and 11.

  A wiping cloth pressing base 13 attached to the lower surface of the support frame 4 is hung on the middle part of the wiping cloth 7 fed from the wiping cloth supply roll 6 and taken up by the wiping cloth winding roll 8. It is turning. Further, a solvent jet port 14 is provided along the length direction at the center of the lower surface of the wiping cloth pressing table 13, and a large number of small holes (not shown) are provided in the lower surface. A solvent such as alcohol discharged from the solvent supply pipe 15 having the above is ejected. The solvent supply pipe 15 is connected to an appropriate solvent supply device (not shown).

  Reference numeral 16 denotes a lower side cleaning device. Reference numeral 17 denotes a support substrate that can be reciprocated in the same direction as the upper-side cleaning device 1 with a required drive mechanism 18 and can be moved up and down at a predetermined timing. Reference numerals 18 and 18 denote a pair of support plates which are provided so as to project in parallel from the support substrate 17.

  Reference numeral 19 denotes an air ejection device which ejects air at a predetermined timing from an air ejection port 21 provided on the upper surface of the cylindrical main body 20 to accelerate drying. Further, the air ejection device 19 is fixed between the support plates 18 and 18 so as to be parallel to a pressing base of a wipe to be described later. The air ejection device 19 is connected to an appropriate air supply device (not shown). The air may be warm air.

  Reference numeral 22 denotes a cylindrical wiping cloth pressing table, and a suction port 23 is provided on the upper surface along the length direction. The top surface is flat. Further, the wiping cloth pressing table 22 is fixed in a stretched manner between the support plates 18 and 18, and one end thereof is connected to a vacuum device (not shown). Suction is performed from the suction port 23 at a predetermined timing by the vacuum device. Further, the wiping cloth pressing table 22 is arranged slightly above the wiping cloth supply roll described later, and hangs around the middle part of the wiping cloth.

  Reference numeral 24 denotes a solvent coating device, which is disposed on the opposite side of the air jetting device 19 so as to be parallel to the wiping cloth pressing table 22 and is moved up and down with a cylinder (not shown) at a predetermined timing. Further, the solvent application device 24 includes an elongated box-shaped container 25, a flexible coating material 26 made of deer skin, felt or the like exposed from the upper surface of the container 25, and an alcohol or the like. And a pipe 27 for spraying a solvent (not shown).

  Reference numeral 28 denotes a wipe supply cloth supply roll around which an unused cotton wipe cloth 29 is wound. The wiping cloth supply roll 28 is disposed in parallel with the wiping cloth pressing table 22 so as to sandwich the solvent application device 24 and is rotatably supported between the support plates 18 and 18. Yes.

  Reference numeral 30 denotes a wiping cloth winding roll for winding a used portion of the wiping cloth 29 at a predetermined timing. The wiping roll 30 is disposed between the support plates 18 and 18 in parallel with the wiping cloth supply roll 28 and is driven at an appropriate timing by a drive motor. In the other figures, 31 is a screen mask, 32 is a squeegee, 33 is a drive mechanism for supporting the squeegee and moving it up and down and horizontally, and 34 is a squeegee moving table.

Next, the operation of this embodiment will be described with reference to FIG.
First, a solvent is applied to the screen mask. In this case, the lower side cleaning device 16 moves to the same position as the upper side cleaning device 1. Then, the upper side cleaning device 1 and the lower side cleaning device 16 are moved together to the screen mask cleaning position.

  Next, the wipes 7 and 29 of the upper side cleaning device 1 and the lower side cleaning device 16 are brought into contact with the screen mask 31, respectively. Then, the solvent is ejected from the solvent ejection port 14 of the upper side cleaning device 1 and the solvent is supplied to the coating material 26 from the pipe 27 in the solvent coating device 24 of the lower side cleaning device 16.

  In this state, the upper side cleaning device 1 and the lower side cleaning device 16 are moved within the cleaning range of the screen mask 31 at the same speed. As a result, the solvent exiting from the solvent jet 14 of the upper side cleaning device 1 penetrates into the wiping cloth 7 and is applied to the upper surface of the screen mask 31 through this, while the solvent application of the lower side cleaning device 16 is applied. The solvent supplied to the coating material 26 in the apparatus 24 soaks into the wiping cloth 29 and is applied to the back surface of the screen mask 31 through this. The screen mask 31 is rubbed and wiped by the wipes 7 and 29.

  Next, the screen mask is wiped off. In this case, the ejection of the solvent from the solvent ejection port 14 in the upper side cleaning device 1 is stopped, and the solvent coating device 24 of the lower side cleaning device 16 is lowered to apply the coating material 26 to the screen mask 31 in that state. Stop contact.

  In this state, the wiping roll 8 for the wiping cloth of the upper side cleaning device 1 and the winding roll 30 for the wiping cloth of the lower side cleaning device 16 are driven to take up the dirty portions of the wiping cloths 7 and 29.

  When the above steps are repeated as many times as necessary, a drying operation is finally performed. In this case, air is blown from the air jet port 21 of the air ejection device 19 to the screen mask 31 while the wiping cloth pressing table 22 of the lower side cleaning device 16 performs suction, and in this state, the same as described above. The upper side cleaning device 1 and the lower side cleaning device 16 are moved in the cleaning range at the same speed.

It is a front view of the screen printing machine which shows the arrangement | positioning state of this invention. It is a side view of the screen printing machine which shows the arrangement | positioning state of this invention. It is a front view of an upper side cleaning apparatus. It is a side view of an upper side cleaning apparatus. It is an enlarged view of a part in FIG. It is the front view which abbreviate | omitted and showed the support substrate drive mechanism of the lower side cleaning apparatus. It is the top view which abbreviate | omitted and showed the support substrate drive mechanism of the lower side cleaning apparatus. It is an AA line expanded sectional view in FIG. FIG. 8 is an enlarged sectional view taken along line BB in FIG. 7. FIG. 8 is an enlarged sectional view taken along line CC in FIG. It is a schematic explanatory drawing of a lower side cleaning apparatus. It is a longitudinal cross-sectional view of the solvent coating apparatus in a lower side cleaning apparatus. It is operation | movement explanatory drawing of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Upper side cleaning apparatus 2 Support substrate 3 Elevating support plate 4 Support frame 6 Wiping cloth supply roll 7 Wiping cloth 8 Wiping cloth winding roll 13 Wiping cloth pressing base 14 Solvent outlet 15 Solvent supply pipe 16 Lower side cleaning Device 17 Support substrate 18, 18 A pair of support plates 19 Air ejection device 21 Air ejection port 22 Wiping cloth pressing table 23 Suction port 24 Solvent application device 28 Wiping cloth supply roll 29 Wiping cloth 30 Winding roll

Claims (1)

Winding of the wiping cloth, which is arranged in parallel with the wiping cloth supply roll around which the wiping cloth is wound, and is wound in parallel with the wiping cloth supplying roll, and which rotates at a predetermined timing to wind up the used part of the wiping cloth. The roll is disposed at the lower part of the wiping cloth supply roll and the wiping cloth take-up roll. The middle part of the wiping cloth is hung around and the solvent is ejected from the solvent outlet provided at the center of the lower surface at a predetermined timing. The wiping cloth pressing table thus formed is integrally moved back and forth along the upper surface of the screen mask, and further, the wiping cloth supply roll, the wiping cloth winding roll, and the wiping cloth pressing table. And the upper side cleaning device that can be moved up and down at a predetermined timing, and the middle part of the wiping cloth is hung around and provided on the upper surface A cylindrical wiping cloth pressing base adapted to perform suction at a predetermined timing from the pulling opening, and arranged in parallel with the wiping cloth pressing base, and at a predetermined timing from an air outlet provided on the upper surface. And an air ejection device adapted to eject air at a position opposite to the air ejection device and slightly below the wiping cloth pressing table, in parallel with the wiping cloth pressing table. , A wipe supply roll wrapped around an unused wipe, a wipe take-up roll that rotates at a predetermined timing to take up a used portion of the wipe, and a wiper and wiper of the wipe A solvent applicator with a solvent applicator provided on the upper surface, placed in parallel with the cloth supply roll, should be reciprocated integrally along the back surface of the screen mask. None, and further, the solvent application device is moved up and down at a predetermined timing, and the wiping cloth pressing table, the wiping cloth supply roll and the wiping cloth winding roll are moved up and down at a predetermined timing. A screen mask cleaning device for a screen printing machine, comprising a lower side cleaning device.

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