JP2969376B2 - Adhesive application nozzle cleaning device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive application nozzle cleaning device for cleaning an adhesive applied to an adhesive application nozzle.

[Conventional technology]

Generally, when a high-clay liquid such as a one-component polyurethane adhesive is applied to a window glass of an automobile, the adhesive adheres to an application nozzle at the end of the application. If this adhered adhesive is not cleaned and removed and left as it is, the adhesive adheres to the application nozzle, causing clogging of the adhesive application side notch and changing the adhesive beat formation, Smooth coating becomes difficult. Therefore, various types of cleaning devices for adhesive application nozzles have conventionally been employed. JP-A-64-18
Japanese Patent Publication No. 466 shows one example.

The cleaning device described in JP-A-64-18466 discloses a cleaning device in which a pair of opening / closing arms arranged opposite to each other comes into contact with the outer peripheral surface of a coating nozzle to lightly grip the coating nozzle, The application nozzle is pulled out to scrape off the adhesive adhering to the outer periphery thereof, and the scraped-off adhesive is scraped off by a scraping plate and blown off by compressed air to be removed.

[Problems to be solved by the invention]

However, in the above-described conventional technique, the application nozzle is cleaned, but the following problems occur.

If the man-hour from the end of the application work of the front vehicle to the start of the application work of the rear vehicle is short, the adhesive exposed from the notch for application does not harden and there is no problem. By mixing things that do not need to be applied,
If the above man-hours are long, the adhesive exposed from the notch for application is hardened, which causes the adhesive to be poorly adhered to glass, etc., and the high-precision adhesive application is not performed. .

The present invention has been made in view of solving the above-described problems, and at the time of standby for an application operation, while preventing the adhesive exposed from the application notch of the adhesive application nozzle from being dried, the adhesive is prevented from being cured. An object of the present invention is to provide a cleaning device for an adhesive application nozzle that can efficiently clean the application nozzle.

[Means for solving the problem]

In order to achieve the above object, the cleaning device of the present invention stores an oil for preventing the hardening of the adhesive, and an adhesive hardening preventing mechanism capable of inserting an adhesive application nozzle from a part thereof, and the hardening of the adhesive. A blow-off mechanism that blows out the adhesive and oil by blowing compressed air onto the adhesive application nozzle to which oil has adhered when inserted into the prevention mechanism, and the adhesive exposed at the tip of the adhesive application nozzle by the blow-off mechanism And a wiping mechanism for wiping away the adhesive and oil on the side of the adhesive application nozzle that could not be completely removed by the oil bleeding mechanism.

Further, the wiping mechanism may include a pair of wiping members, a holding mechanism for pressing and holding the adhesive application nozzle inserted between the wiping members, and a discharging mechanism for discharging the used wiping member to the outside. Good.

[Action]

According to the present invention, first, after the adhesive application operation is completed, the adhesive application nozzle having the adhesive adhered to the side surface is inserted into the adhesive curing prevention mechanism, and the exposed adhesive is put into the oil so that the exposed adhesive is not cured. Then, immediately before the work is performed on the next work, the adhesive application nozzle is taken out of the adhesive hardening prevention mechanism, and the adhesive and oil adhering to the side surfaces to a certain extent are blown off by applying compressed air by a blow-down mechanism. Next, the adhesive exposed from the tip of the adhesive application nozzle and adhering the oil is discharged from the adhesive discharge section, and then the adhesive and oil on the side of the adhesive application nozzle which cannot be completely removed by the blow-off mechanism are blown off. The adhesive is blown off by a mechanism, and the adhesive is cleaned from the adhesive application nozzle using oil as a release agent.

〔Example〕

Hereinafter, the structure of an adhesive application nozzle cleaning device according to an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a plan view showing an adhesive application nozzle cleaning device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line XX of FIG. 1, and FIG. 3 is a part of FIG. FIG. 4 is an enlarged view of FIG.
FIG. 5 is a sectional view taken along the line Y-Y of FIG. 5, FIG. 5 is a perspective view of an attached oil cleaning device of the adhesive application nozzle cleaning device according to the embodiment of the present invention, and FIG. 6 is a line Z-Z of FIG. Sectional view, seventh
FIG. 2 is a partially enlarged view of FIG. 2, and FIG. 8 is a front view of an adhesive application station having an adhesive application nozzle cleaning device according to an embodiment of the present invention.

An adhesive application nozzle cleaning device (A) according to an embodiment of the present invention includes a base (1) and an adhesive curing prevention mechanism (2).
A blow-off mechanism (3), an adhesive discharge section (4),
It is constituted by a wiping mechanism (5).

As shown in FIGS. 1, 2 and 6, the base (1)
Is a table (1) at the upper end of the steel frame (1a).
b) is attached, and each of the above mechanisms is provided.

The adhesive curing prevention mechanism (2) is a mechanism capable of keeping the adhesive exposed from the adhesive application nozzle (B) uncured, and has the following configuration. (Refer to FIG. 1 and FIG. 2.) (2a) is a cylindrical container with an open upper end welded to a through hole (2b) provided in a table (1b) of a base (1), which will be described later. Can be inserted. still,
(2c) is a cylindrical member penetrating and attached to the lower surface of the container (2a), and is stored in the container (2a) by removing a cap (2d) screwed into a threaded portion at the tip. In addition, it is possible to discharge garbage and oil. (2e) is an oil container composed of a cylindrical container having an inner wall diameter substantially equal to the outer diameter of the above-mentioned container (2a) and having an open upper end, and stores an oil (C) for preventing adhesive curing. And is detachable from the container (2a).

The blow-off mechanism (3) blows compressed air to the adhesive application nozzle (B) to blow off the adhesive and oil adhering to its side surface, and has the following configuration. (See FIGS. 1, 2 and 7).

(3a) is a through hole for inserting an adhesive application nozzle (B) provided on the side of the through hole (2b) of the table (1b), and is used for bonding an adhesive discharge section (4) described later. The agent application nozzle (B) also serves as an insertion portion.

(3b) is a substantially quadrilateral bracket (3d) having a fitting hole (3c) in the center, and a curved portion at the tip of a circularly curved tip is provided on the outer periphery of the through hole (3a) on the upper surface of the table (1b). (3e)
Is a compressed air pipe to which compressed air is discharged from a plurality of obliquely downwardly facing through holes (3f) provided on the inner wall of the curved portion (3e), and an adhesive material inserted into the through hole (3a). Blow compressed air to the application nozzle (B).

(3g) is a substantially quadrilateral base having a hollow portion on the lower surface attached to the upper surface of the table (1b) in a shape covering the bracket (3d) and the compressed air pipe (3b). A through hole (3h) is provided above a certain through hole (3a).

(3i) is a compressed air pipe in which a circular curved portion (3j) at the tip is fixed to the outer periphery of the through hole (3h), and is similar to the compressed air pipe (3b). Has a structure. (3k) is a quadrangular bracket having a fitting hole (3l) having a slightly smaller upper end in the center and a through hole (3m) provided on the bottom surface of the fitting hole (31). The compressed air pipe (3i) is fixed.

The adhesive discharging section (4) is a section for discharging the adhesive (D) exposed from the tip of the adhesive applying nozzle (B) and having the oil (C) attached thereto, and has the following configuration. (See FIGS. 1, 2, and 6) (4a) is a pair of slide rails (4b) provided on the lower surface of the table (1b) with the adhesive nozzle insertion portion (3a) at the center. Is a slider having a substantially quadrilateral shape which can slide freely, a through hole (4d) having a ring-shaped projection (4c) at the upper end in the center thereof, and a substantially quadrilateral handle (4e) at one lower end thereof. Is provided. The stopper (4f) is attached to the slide surface of the slide rail (4b) so as to be able to contact the slider (4a). On the outer wall of the ring-shaped protrusion (4c) of the slider (4a), the vinyl bag (4g) for receiving the adhesive is passed through from below the through hole (4d), and the opening is folded back. It is possible to tighten and fix with a band (4h).

The wiping mechanism (5) wipes off the adhesive (D) and the oil (C) adhered to the side of the adhesive application nozzle (B) which could not be completely removed by the blow-off mechanism (3), and removes the oil (C) from the agent. Is a mechanism for cleaning the adhesive (D) from the adhesive application nozzle (B), and has the following configuration. (See FIG. 1, FIG. 3, FIG. 4, and FIG. 5.) (5a) is a table (1) for discharging a wiping member (5c) described below from above the table (1b) to below.
This is a through hole provided substantially at the center of b), and is located at the center of the wiping mechanism (5).

(5b) and (5b ') are a pair of storage boxes for wiping members provided symmetrically around the through hole (5a), and are bandage-shaped rolled wiping members (5) having a water supply.
c) has a container-like shape with an open top that can be stored,
Normally, the tip of the wiping member (5c) is exposed to the outside from the open end of the opening (5e) which is closed except for a part by the lid member (5d).

(Since (5b) and (5b ') have the same structure, (5b)
Description of the structure of b ′) is omitted. (5f) and (5f ') are loosening prevention mechanisms for the wiping member provided in a pair inside the wiping member storage box (5b) in a state symmetrical about the through hole (5a). .
This wiping member loosening prevention mechanism (5f, 5f ') has a pair of elongated through-holes (5g) directed upward and downward in the vertical direction, and a circular through-hole (5h) below the through-holes. A bracket (5i) and a longitudinal roller (5) that is rotatable with the center shaft (5j) fixed in the circular through hole (5h).
k) and the central shaft (5k) in the through hole (5g)
The roller (5l) has a longitudinal roller (5l) that is rotatable by fitting with it, a substantially cylindrical protrusion (5m) provided below the circular through hole (5h) of the bracket (5i), and a roller (5l). ) Of the center shaft (5k) protruding from the bracket (5i) and the protrusion (5
m) and a coil spring (5n) for urging the rollers (5l) attached to both ends downward. (Since (5f) and (5f ') have the same structure,
The description of the structure of (5f ′) is omitted. ) Loosening prevention mechanism for wiping member by the above structure (5)
Can hold the wiping member (5c) between the rollers (5l) and (5k) and lightly support it.

(5o) is a clamping function capable of clamping the adhesive application nozzle (B), and has the following configuration.

(5p) and (5p) are a pair of rotatable rollers whose central axes are oriented in the same direction as the central axis of the roller (5k) above the through hole (5a) of the table (1b). Then, the two piston rods (5r) and (5s), which can be centered, of the cylinder (5q) fixed on the table (1b) upper surface,
A pair of sliders (5t) and (5u) are mounted with one piston rod serving as a slide guide beam and the other piston rod serving as a fixed portion for sliding follow. The center axis (5w) of the roller (5p) is fixed to the sliders (5t) and (5u) via a bracket (5v).

As shown in FIG. 3, the roller (5p) is
w), a substantially cylindrical rotating base (5y) is rotatably mounted via a pair of bearings (5x), and a cylindrical member (5z) made of an elastic material such as sponge rubber is attached to an outer wall of the base (5y). ) Is attached.

With the structure as described above, the roller (5p) can be freely contacted and detached by the operation of the cylinder (5q) as shown in FIG. 5, and at the time of contact, the cylindrical member (5z) is passed through the wiping member (5c). ) Can sandwich the adhesive application nozzle (B).

(51) and (51 ') are wiping member confirmation mechanisms provided in a pair inward of the wiping member loosening prevention mechanism (5f) in a state symmetric about the through hole (5a). An optical sensor is built in a U-shaped member (53) provided on the upper side wall of a plate-shaped bracket (52), and a wiping member (53) is attached to an opening (54) of the member (53). It is possible to check whether 5c) exists.
(Since (51) and (51 ') have the same structure, (5
The description of the mechanism 1 ') is omitted. (55) is a wiping member discharge mechanism for discharging the wiping member (5c) downward, and has the following structure.

(56) is a pair of bearing members provided on the lower surface of the table (1b) with the through-hole (5a) located at an intermediate portion, and a circular through-hole (57) provided from one end thereof and the other end thereof. A central shaft of a roller, which will be described later, is fitted into a horizontally long oblong through hole (58 through hole) provided at the same height position from the end. (59) is a longitudinal columnar roller in which the end of the center shaft (510) is fitted to the above-mentioned horizontally long slot-like (58) so that the end of the center shaft (510) can be slightly floated. A cylindrical roller section (51
1) is attached in a rotatable state.

Reference numeral (512) denotes a roller in which a central shaft (514) integrated with the roller portion (513) fits into the circular through hole (57), and a pinion is provided at one end of the central shaft (514). A one-way clutch (516) having a gear (515) is mounted.

When the one-way clutch (516) rotates in the rotation direction of the arrow shown in FIG.
This is a commercially available one-way clutch having a structure in which the roller portion (513) is driven by the same rotation direction but does not follow the roller portion (513) when rotated in the opposite direction.

(517) is a pressing mechanism that constantly presses the tip protruding from the through hole (58) of the roller (59) inward,
As shown in FIG. 5, a cylindrical beam (520) rotatably connected to the pair of tips by a pin (518) and attached in parallel by a bracket (519) is connected to a coil spring (521). Table (1)
b) A structure in which the roller (59) is constantly pressed by being inserted into the through hole (523) of a pair of L-shaped brackets (522) attached to the lower surface.

(524) is a rack gear which is slidably fitted to a guide member (526) attached to the lower surface of the table (1b), and whose downwardly facing teeth are fitted to the above-mentioned pinion gear (515). The piston rod tip is integrated with the rear end, and the main body slides by the expansion and contraction of a cylinder (526) fixed to the lower surface of the table (1b) via an L-shaped bracket (525) to slide the pinion gear (515). It can be driven.

(527) corresponds to the through hole (5
The slider has a substantially quadrilateral shape and is slidable on a pair of slide rails (528) provided on the lower surface of the table (1b) with a) as a center. A through-hole (5) having a ring-shaped protrusion (529) at the upper end in the center of the slider (527).
30) has a substantially quadrilateral handle (53
1) is provided. A stopper (532) is attached to the slide surface of the slide rail (528) so as to be able to contact the slider (527). In addition, a vinyl bag (533) for attaching a wiping member (5c) is formed on the outer wall of the ring-shaped protrusion (529) of the slider (527) in a state where the vinyl bag (533) communicates below the through hole (530). It is possible to fasten the part with a folding band (534).

Due to the above structure, the wiping member discharging mechanism (55) is configured such that two dirty wiping members (5c) inserted below the through-hole (5a) of the table (1b) are overlapped with the roller (5).
9) and (512) are in a state of being pressed and clamped. And
Roller (5) with the working stroke of cylinder (526)
By rotating by a fixed amount per cycle of 9) and (512), it is possible to discharge the two wiping members (5c) by a fixed amount.

Next, the operation and action of the adhesive application nozzle cleaning device (A) according to the embodiment of the present invention will be described with reference to the drawings.

As shown in FIG. 8, the adhesive application robot (E)
At the time when the operation of applying the adhesive to the window glass (F) of the automobile is completed, the adhesive application nozzle cleaning device (A) having the adhesive application nozzle (B) at the end of the arm positioned on the side prevents the adhesive from hardening. It is inserted into the oil container (2e) of the mechanism (2), and is put in the oil (C) to be stored.

Then, when the start of the operation of applying the adhesive to the window glass (F) of the inferior automobile is approaching, first, the adhesive applying nozzle (B) is blown down, and the through hole (3a) of the mechanism (3) is blown down.
Insert

Next, the compressed air piping (3b). (3i) curved part (3e)
-By blowing compressed air to the adhesive application nozzle (B) from (3j), the adhesive (D) and oil (C) attached to the side surface are blown down to some extent.

Then, a small amount of the adhesive (D) exposed from the tip of the adhesive application nozzle (B) and adhering to the oil (C) is discharged into a vinyl bag (4 g) of the adhesive discharge section (4). Then, the adhesive application nozzle (B) is moved and inserted into the through hole (5a) of the wiping mechanism (5).

Next, as shown by the solid line in FIG. 5, the roller (5p) in the detached state is brought into contact with the two wiping members (5c) as shown by the imaginary line by the operation of the cylinder (5q). At this time, the cylindrical member (5z) made of an elastic member is elastically deformed while covering the adhesive application nozzle (B).

The adhesive (D) and the oil on the side of the adhesive application nozzle (B) that could not be removed by the wiping mechanism (3) were wiped upward while rotating the adhesive application nozzle (B). (C) can be wiped off using oil (C) as a release agent.

After the above operation, the cylinder (5q) is extended, and the roller (5p) comes off. Next, as the cylinder (526) in the extended state contracts, the roller (512) rotates and the roller (59) is driven and the overlapping wiping members (5c) are overlapped with each other by a predetermined amount. (5) The wiping member (5c) that is discharged into the inside and comes into contact with the adhesive application nozzle (B)
Can be kept clean.

When the cylinder (526) extends, the roller portion (513) is not driven by the action of the one-way clutch (516), so that the wiping member (5c) does not roll back.

〔The invention's effect〕

As described above, according to the apparatus of the present invention, in addition to the mechanism for removing the adhesive adhering to the side surface of the adhesive application nozzle, a mechanism for preventing the adhesive exposed from the tip of the nozzle from being cured is provided. Further, it is possible to prevent the adhesive of the first adhesive application nozzle from being clogged, that is, to prevent the adhesive from adhering to the glass, and to apply the adhesive with high precision.

[Brief description of the drawings]

FIG. 1 is a plan view of an adhesive application nozzle cleaning device according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line XX of FIG. FIG. 3 is a partially enlarged view of FIG. FIG. 4 is a sectional view taken along line YY of FIG. FIG. 5 is a perspective view of an attached oil cleaning device included in the adhesive application nozzle cleaning device according to the embodiment of the present application. FIG. 6 shows the first
It is ZZ line sectional drawing of a figure. FIG. 7 is a partially enlarged view of FIG. FIG. 8 is a front view of an adhesive application station having an adhesive application nozzle cleaning device according to an embodiment of the present invention. A: Adhesive application nozzle cleaning device B: Adhesive nozzle, C: Oil D: Adhesive 1: Base 2, Adhesive hardening prevention mechanism 3, Blow-off mechanism 4, Adhesion Agent discharging section 5: Wiping mechanism, 5c: Wiping member 5o: Nipping mechanism 55: Wiping member discharging mechanism

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-2-218467 (JP, A) JP-A-59-127669 (JP, A) JP-A-58-112063 (JP, A) JP-A-2- 46730 (JP, A) Japanese Utility Model Sho 62-35666 (JP, U) Japanese Utility Model Utility Model No. 1-163369 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B05C 5/00-5 / 04 B05B 15/02 B05D 3/00 B05C 11/00

Claims (2)

(57) [Claims] 1. An adhesive hardening preventing mechanism that stores an oil for preventing the hardening of an adhesive and allows an adhesive application nozzle to be inserted from a part of the oil. A blow-off mechanism that blows compressed air to the adhesive application nozzle that blows off the adhesive and oil,
An adhesive discharge section that slightly discharges the adhesive exposed at the tip of the adhesive application nozzle by the blow-off mechanism, and a wiper that wipes off the adhesive and oil on the side of the adhesive application nozzle that could not be completely removed by the oil blow-off mechanism A cleaning device for an adhesive application nozzle, comprising a mechanism. 2. The wiping mechanism comprises a pair of wiping members, a holding mechanism for pressing and holding an adhesive application nozzle inserted between the wiping members, and a discharging mechanism for discharging a used wiping member to the outside. The cleaning device for an adhesive application nozzle according to claim 1, wherein: