JP3273311B2 - Discharge nozzle and coating device for two-component reaction-curable material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a discharge nozzle used for applying a two-component reaction-curable material typified by a two-component adhesive, and a two-component reaction-curable material contained in a tube container from the discharge nozzle. The present invention relates to an application device for extruding and applying.

[0002]

2. Description of the Related Art Conventionally, as a coating apparatus used for applying a two-part adhesive, which is a typical example of a two-part reaction-curable material, a discharge nozzle which incorporates a static mixer and merges and mixes both adhesives and discharges them. Is known (Japanese Kaihei 2)
-138183). More specifically, two tube containers made of a two-component adhesive are sandwiched between three opposing holding plates in parallel, and threaded rods that are reverse-threaded around the center are attached to the three holding plates. Push the adhesive out of both tubes at the same time by penetrating it and screwing it into the screw holes of the two outer holding plates and turning this screw bar to narrow the gap between the two outer holding plates. It is known that the above-mentioned discharge nozzle is connected to each tube container using an extruder capable of extruding both adhesives to the discharge nozzle.

Also, an extruding apparatus having two cylindrical cartridges separately containing two-component adhesives, and two pushing rods each having a grip portion, a lever portion, and a piston-like pushing portion at the tip. By using the above, a discharge nozzle connected to the end of the cartridge is provided, and the two cartridges are mounted on the extruder with the two push rods pulled out rearward, and the lever portion is pulled down by holding the grip portion. There is also known a method in which an extruding rod is advanced in a stepwise manner, and an adhesive in each cartridge is extruded and merged into an ejecting nozzle by an extruding portion to be ejected (Japanese Utility Model Laid-Open No. 5-80563).

[0004]

However, in the case of a discharge nozzle incorporating the above-mentioned static mixer, it is expensive and, since the two adhesives are mixed and mixed inside, the use of the adhesive in the discharge nozzle when the use is interrupted is stopped. However, there is a problem that the ejection nozzle has to be cleaned or replaced every time the use is interrupted.

On the other hand, in the case of the coating apparatus for extruding the adhesive from the tube container, since the outer two pressing plates are moved in parallel to press the tube container, the thickness gradually decreases from the shoulder portion to the buttocks. In a general tube container, there is a problem that a pressing force is applied intensively in the vicinity of a thick shoulder portion, an adhesive escapes to a butt portion, and it is difficult to perform smooth extrusion. Also, while holding the device itself with one hand, turning the screw rod with the other hand to discharge the adhesive, not only must you use both hands at the time of work, the discharge position is easy to shake when turning the screw bar, There is also a problem with poor workability.

Further, in the case of an applicator for extruding the adhesive from the cartridge, a two-part adhesive stored in a dedicated cartridge is manufactured separately, or a two-part adhesive generally sold in a tube container is commercially available. Must be refilled into a special cartridge for use. If the two-part adhesive is housed in a special cartridge and manufactured and used separately, the cartridge part that functions as a cylinder must be disposable, and there is a problem that the cost is higher than a tube container. There is a problem that refilling is troublesome.

A first object of the present invention is to provide a discharge nozzle used for applying a two-component reaction-curable material typified by a two-component adhesive without requiring cleaning or replacement even when the operation is interrupted. An object of the present invention is to provide an inexpensive and simple discharge nozzle capable of immediately restarting the operation.

A second object of the present invention is to provide a coating apparatus capable of smoothly extruding both materials contained in a general tube container to the discharge nozzle.

A third object of the present invention is to provide a coating apparatus having good workability, which can easily push out and apply both materials contained in a tube container to the discharge nozzle with one hand.

[0010]

According to the first aspect of the present invention, there is provided:
For the first purpose, two-component reaction-curable materials are separately supplied from the rear end, two flexible tubes having a discharge port at the front end, and the flexible tube is bent by bending the flexible tube. 2 having an interval adjusting means for adjusting the interval between the tips.
This is a discharge nozzle for a liquid reaction-curable material.

Further, in the invention according to claim 4, for the second object, a substrate for receiving two tube containers of a two-component reaction-curable material on an upper surface with their mouths facing forward, A rear end is pivotally attached to the rear end of the substrate, is attached to the substrate so as to be tiltable up and down on the substrate, and a holding plate for holding both tube containers on the substrate between the substrate and a holding plate for tilting the holding plate downward. Plate tilting means, two flexible tubes each having a rear end separately connected to the mouth of the tube container, and having a discharge port at the tip, and bending the flexible tube to reduce the distance between the tips. This is an apparatus for applying a two-component reaction curable material having an interval adjusting means for adjustment.

According to a fifth aspect of the present invention, in order to achieve the third object, in the coating apparatus, a grip portion and a lever portion in front of the grip portion are provided on a lower surface of the substrate, and the holding plate tilting means is provided with a lever. When the portion is drawn down, the tip of the holding plate is drawn downward.

[0013]

FIG. 1 is a side view showing an example of a coating apparatus of the present invention using a discharge nozzle A of the present invention, and FIG. 2 is a plan view thereof.

As shown in the drawing, the present coating apparatus comprises a discharge nozzle A and an extruder B.

First, the discharge nozzle A will be described.

The discharge nozzle A is detachably connected to two tube containers 2 located on the substrate 1 of the extruder B, and each of the two-component reaction-curable materials extruded from each tube container 2. Are ejected separately.

The main part of the discharge nozzle A is composed of two flexible tubes 3. This two flexible tubes 3
Are connected separately to the respective tube containers 2 at their rear ends. A nozzle cap 5 having a discharge port 4 at each end is detachably connected to the ends of both flexible tubes 3. The flexible tube 3 and the nozzle cap 5
Is preferably a material to which the respective materials supplied from the tube container 2 are not easily adhered, and is different depending on the type of the two-component reaction-curable material.

One end of a link plate 6 is attached to an intermediate portion between both flexible tubes 3. The two link plates 6 have the other ends screwed between the two flexible tubes 3 so as to be bendable, and a distance adjusting means for bending the flexible tubes 3 to adjust the distance between the distal ends thereof. 7. That is, if the thumb screw 8 of the screwed portion between the link plates 6 is loosened and the link plate 6 is bent so as to draw the screwed portion toward the extruding device B and then the thumb screw 8 is tightened, the both flexible tubes are bent. 3 (the tip of the nozzle cap 5) can be fixed in a state of approaching. On the contrary, if the screwing portion is pushed toward the anti-extrusion device B side to loosen the bending of the link plate 6, and then tighten the thumbscrew 8,
Both flexible tubes 3 can be fixed with their distal ends kept apart.

For example, if the distal ends of the flexible tubes 3 are kept apart when the coating operation is interrupted, even if both materials leak out of the discharge ports 4, the discharge ports 4 at the distal ends of the flexible tubes 3 can be used.
Are separated from each other, so that it can be prevented from contact hardening and blocking the discharge port 4. Also, if the distal ends of both flexible tubes 3 are brought close to each other as shown in the figure,
Both materials can be discharged in a contact state. In the application of a two-component reaction-curable material, usually, both materials are extruded onto the application surface, and then spread with a trowel or the like. Both materials can be easily mixed during the spreading operation. Further, the distal ends of both flexible tubes 3 are
If they are positioned vertically, instead of close to each other as shown, both materials can be extruded in an overlapping state.

In the illustrated example, the nozzle caps 5 are connected to the distal ends of both flexible tubes 3. However, the nozzle caps 5 are omitted, and the distal end openings of the flexible tubes 3 are connected to the discharge ports 4. You can also. However, it is preferable to provide the nozzle cap 5 because a plurality of nozzle caps 5 having different shapes and sizes of the discharge ports 4 are prepared, and the nozzle caps 5 can be exchanged and used according to the work. . The discharge port 4 can be of various shapes and sizes, such as a rectangular hole or a slit, in addition to a general circular hole. In particular, when the tips of both flexible tubes 3 are positioned vertically and a nozzle cap 5 having a horizontally elongated slit-shaped discharge port 4 is used, both materials can be discharged in a vertically overlapping strip shape. Further, even when the periphery of the discharge port 4 is damaged by rubbing with the application surface, if the nozzle cap 5 is used, only the nozzle cap 5 needs to be replaced, which is economical.

The connection between the two flexible tubes 3 and each tube container 2 can be performed through a connecting tube 10 having a flange 9 at one end, as clearly shown in FIG. More specifically, one end surface of the connection pipe 10 on the flange 9 side is brought into contact with the distal end surface of the mouth 11 of the tube container 2, and a cap nut-shaped tube container connection cap 12 engaging with the flange 9 is attached to the mouth 11. Into one end of the connecting pipe 10 and the tube container 2.
Of the mouth 11 is in close contact. A flexible tube connection cap 13 and an O-ring 14 in the form of a cap nut are sequentially fitted on the rear end side of the flexible tube 3, and the rear end of the flexible tube 3 is connected to the connection tube 10. And the flexible tube connection cap 13 is screwed into the connection tube 10 and tightened, and the O-ring 14
Is sandwiched between the connection pipe 10 and the connection pipe 10. The space between the connection pipe 10 and the mouth 11 of the tube container 2 is sealed by the close contact between one end face of the connection pipe 10 and the tip face of the mouth 11, and the space between the connection pipe 10 and the flexible tube 3 The seal between the inner surface and the outer surface of the flexible tube 3 and the O-ring 14 are sealed. By connecting the flexible tube 3 and the tube container 2 in this manner, the tube container 2 can be easily exchanged by turning the tube container connection cap 12, and the flexible tube connection cap 13 can be connected. By turning, the flexible tube 3 can be easily replaced.

Next, the extruder B will be described.

In FIGS. 1 and 2, reference numeral 1 denotes a substrate.
A grip portion 15 and a lever portion 16 located in front of the grip portion 15 are provided on the lower surface side of. The lever portion 16 is interlocked with a holding plate tilting means 17 described later. Further, two tube containers 2 made of a two-component reaction-curable material are held on the substrate 1 with their mouths 11 (see FIG. 3) facing forward. The tube container 2 is a general one whose thickness gradually decreases from the shoulder portion 18 to the buttocks portion 19.

On the substrate 1, there is provided a holding plate 21 whose rear end is pivotally attached to the rear end of the substrate 1 by a butterfly plate 20 and which can be tilted up and down on the substrate 1. The two tube containers 2 are sandwiched between them. The distal edges of the substrate 1 and the holding plate 21 are located slightly closer to the body 22 than the shoulders 18 of both tube containers 2, and are usually hard shoulders 18.
, The flexible body 22 can be reliably pressed.

In front of the lever portion 16, a holding plate tilting means 17 is provided integrally with the grip portion 15 and the lever portion 16. The presser plate tilting means 17 has a slide shaft 23 having an upper end connected to the tip of the presser plate 21.
Is pressed down, the holding plate 21 is tilted downward. That is, when the slide shaft 23 is gradually pulled down by repeatedly drawing and releasing the lever portion 16 and releasing the same, the presser plate 21 tilts downward, and finally the body portion 22 of the tube container 2 is completely moved. It will be crushed.

In the process of gradually crushing the body 22 of the tube container 2 from the state shown in FIG. 1, the pressing plate 21 is tilted about the rear end butterfly plate 20 as a fulcrum.
Almost the entire body 22 of the general tube container 2 whose thickness gradually decreases from 8 to the butt 19 can be uniformly pressed, and both materials can be extruded smoothly.

In order to allow the holding plate 21 to tilt, the connection between the holding plate tilting means 17 and the holding plate 21 is made with play back and forth. In the present example, as shown in FIG. 2, the front and rear play is provided by the upper end of the slide shaft 23 passing through the elongated hole 24 provided at the tip of the holding plate 21. .

Here, the holding plate tilting means 17 will be described with reference to FIGS.

The holding plate tilting means 17 is connected to the substrate 1 (FIG. 1).
A slide shaft 23 protruding downward has a push-down plate 25 and a stopper plate 26 slidably penetrating therethrough.

As specifically shown in FIG. 5, the push-down plate 25 has a slide shaft 23 penetrating near one end thereof.
A pressing pin 27 that tilts downward when the lever 16 is squeezed contacts the upper surface on the other end, and the other end of the press-down plate 25 is pressed downward when the lever 16 is squeezed. It is something to be done. The pressing plate 25
Is pressed upward by the first spring 28. The push-down plate 25 is in a sliding posture that allows the slide shaft 23 to slide when the lever portion 16 is not drawn down by the pressing force of the first spring 28.
That is, the hole formed in the press-down plate 25 for allowing the slide shaft 23 to penetrate is oriented in a direction that allows the slide shaft 23 to slide in the axial direction.

On the other hand, particularly as clearly shown in FIG.
The stopper plate 26 has a slide shaft 23 passing through an intermediate portion thereof, and one end thereof is supported by a support hole 30 opened in a case 29 integrated with the grip portion 15.
The other end extends out of the case 29. Further, the stopper plate 26 is pressed upward by the second spring 31 and is inclined upward about the support portion of the support hole 30 as a fulcrum, so that when the lever portion 16 is not drawn down, It is engaged with the slide shaft 23 to prevent the slide shaft 23 from sliding. That is, the stopper plate 2 is required to allow the slide shaft 23 to pass therethrough.
6, the stopper plate 26 is inclined upward, so that the peripheral edge of the hole engages with the slide shaft 23 and faces in a direction that prevents the slide shaft 23 from sliding in the axial direction. It has become.

When the lever 16 is pulled down from the state shown in FIG. 4 as shown in FIG. 6, the end of the push-down plate 25 is pushed downward by the push pin 27, so that the push-down plate 25 slides first. It is slightly tilted downward with the penetrating portion of the shaft 23 as a fulcrum. Due to this slight downward tilt, the push-down plate 25 assumes the same engagement posture as the stopper plate 26. Therefore, the subsequent pressing plate 25
Is pushed down with the slide shaft 23 against the first spring 28 by the drawing of the lever portion 16.

On the other hand, when the slide down of the slide shaft 23 is started as described above, the stopper plate 26
Initially tilts slightly downward against the second spring 31 together with the slide of the slide shaft 23 because of the meshing posture, whereby the lever portion 16 is similar to the press-down plate 25 before the drawing. The sliding posture is set to allow the sliding shaft 23 to slide further downward. Accordingly, the slide shaft 23 is slid downward by an amount corresponding to the amount of pulling down with the pulling down of the lever portion 16, and pulls the distal end portion of the holding plate 21 (see FIGS. 1 to 3) downward. Become.

After squeezing the lever portion 16 by the required amount,
When the pulling force of the lever portion 16 is released, the slide shaft 2 is released.
3 is lost, the stopper plate 26 is pushed up by the pressing force of the second spring 31 and immediately returns to the original meshing state. In this state, the force for sliding the slide shaft 23 upward is caused by further tilting the stopper plate 26 upward with the support portion of the support hole 30 as a fulcrum, and
Since the engagement between the slide shaft 23 and the slide shaft 23 is strengthened, the slide shaft 23 is reliably prevented from sliding upward. That is, the tube container 2 (see FIGS. 1 and 2) pressed by the holding plate 21 (see FIGS. 1 and 2).
The return of the slide shaft 23 due to the repulsive force is prevented.

On the other hand, as a result of the release of the pressing force by the pressing pin 27, the pressing plate 25 is pushed up by the first spring 28, returns to the sliding position, and is further slid upward by the stopper plate 26. It returns to the original position while sliding on the blocked slide shaft 23. At this time, the push pin 27 is also pushed up at the same time,
The lever 16 is returned to the state before the drawing.

In a state where the lever portion 16 is not drawn down, when the portion of the stopper plate 26 extending to the outside of the case 29 is pressed downward, the stopper plate 26 can be brought into a sliding posture, and the slide shaft can be set. The front end of the holding plate 21 (see FIG. 1 and FIG. 2) can be lifted upward by sliding the reference numeral 23 upward.

One end of the stopper plate 26 in this embodiment is
It is supported by a support hole 30 opened in the case 29 and serves as a fulcrum for tilting up and down. This fulcrum is supported by the support hole 30.
Is slightly larger in the vertical direction, so there is play up and down. In addition to this play, an auxiliary spring 32 is provided to press the vicinity of the fulcrum of the stopper plate 26 downward. By doing so, the stopper plate 26 moves to the lower end side of the support hole 30 when the lever portion 16 is pulled down.
When the fulcrum-side end of No. 6 releases the drawing force of the lever portion 16, it moves to the upper end side of the support hole 30 and then returns to the meshing posture. Therefore, when the pulling-down force of the lever portion 16 is released, the pressing force of the pressing plate 21 is increased by the play due to the elastic force of both tube containers 2 (see FIGS. 1 and 2).
(See FIGS. 1 and 2). Thus, the pressure in both tube containers 2 immediately after releasing the drawing force of the lever portion 16 can be reduced, and both materials can be prevented from flowing out from the discharge nozzle A until thereafter. . The auxiliary spring 32 is for securely moving the fulcrum-side end of the stopper plate 26 toward the lower end of the support hole 30 when the lever 16 is pulled down.

As described above, the fulcrum of the stopper plate 26 in the present embodiment is constituted by supporting the end of the stopper plate 26 in the support hole 30. This support is performed in the vertical direction of the stopper plate 26. As long as it is a fulcrum of the tilting, the support is not limited to the support hole 30 but may be a support using a shaft pin. In the case of support using a shaft pin, the play can be provided by loosely attaching the shaft pin.

2 applied to the main discharge nozzle A and the coating apparatus
Examples of the liquid reaction-curable material include a typical two-component adhesive, a two-component caulking material, a sealing material, and a paint. Examples of the two-part adhesive include polymerization reaction-curable adhesives such as acrylic adhesives, unsaturated polyester adhesives, vinyl ester adhesives, epoxy adhesives, and urethane adhesives. Of these, acrylic adhesives are preferred because high adhesive strength is easily obtained even when the two materials are not sufficiently combined.

The holding plate tilting means 17 in the present invention
The method is not limited to the one in which the presser plate 21 is swung by pulling down the lever portion 16, and the presser plate 21 may be swung using the power of a motor or the like.
Further, the coating device of the present invention can be applied as a stationary type, instead of a handy type having the grip portion 15.

[0041]

The present invention is as described above, and has the following effects.

(1) Since the discharge nozzle A of the present invention discharges the two materials without merging them inside, the two materials do not contact and harden internally when the operation is interrupted, and the distance adjusting means By adjusting the distance between the distal ends of the flexible tubes 3 in step 7, both the materials can be discharged in a substantially contact state, so that the subsequent workability is good.

(2) Since the discharge nozzle A of the present invention has a simple structure using the flexible tube 3, it is inexpensive.

(3) Since the coating device of the present invention presses the tube container 2 by inclining the holding plate 21, the thickness is gradually reduced from the shoulder 18 to the buttocks 19. Almost the entire body 22 of the tube container 2 can be pressed uniformly, and both materials can be pushed out smoothly.

(4) In the coating apparatus of the present invention, if the holding plate 21 can be tilted by gripping the grip portion 15 with one hand and pulling down the lever portion 16, the work can be performed with one hand.

(5) When one-handed operation is enabled,
It is easy to discharge both materials while moving the tip of the discharge nozzle A along the intended position, and it is possible to perform the application with good workability.

[Brief description of the drawings]

FIG. 1 is a side view showing an example of a coating apparatus of the present invention using a discharge nozzle of the present invention.

FIG. 2 is a plan view of the coating apparatus shown in FIG.

FIG. 3 is an enlarged sectional view showing a connection state between a mouth portion of a tube container and a flexible tube.

FIG. 4 is an enlarged side sectional view of a holding plate tilting means.

FIG. 5 is an enlarged front sectional view of a holding plate tilting means.

FIG. 6 is an enlarged side sectional view of the holding plate tilting means in a state where the lever portion is drawn down.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS A Discharge nozzle B Extrusion device 1 Substrate 2 Tube container 3 Flexible tube 4 Discharge port 5 Nozzle cap 6 Link plate 7 Interval adjusting means 8 Thumb screw 9 Flange 10 Connection tube 11 Mouth 12 Tube container connection cap 13 Flexible Tube connection cap 14 O-ring 15 Grip part 16 Lever part 17 Press plate tilting means 18 Shoulder part 19 Butt part 20 Butterfly plate 21 Press plate 22 Body 23 Slide shaft 24 Slot 25 Depress plate 26 Stopper plate 27 Press pin 28 First Spring 29 Case 30 Support hole 31 Second spring 32 Auxiliary spring

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁷ identification code FI // B05B 7/08 B65D 83/00 D (58) Field surveyed (Int.Cl. ⁷ , DB name) B05C 5/00- 5/02 B05C 9/06 B05C 17/005-17/01 B05D 7/24 301 B65D 81/32 B65D 83/00 B05B 7/08

Claims (9)

(57) [Claims] 1. A two-liquid reaction-curable material is separately supplied from a rear end, two flexible tubes having a discharge port at a front end, and a space between the front ends by bending the flexible tube. An ejection nozzle for two-component reaction-curable material, comprising: an interval adjusting means for adjusting. 2. The distance adjusting means comprises two link plates each having one end fixed to each flexible tube and the other end being screwed to bend between the flexible tubes. A discharge nozzle for the two-component reaction-curable material according to claim 1. 3. The two-component reaction-curable material discharge nozzle according to claim 1, wherein a nozzle cap having a discharge port at the distal end is detachably connected to a distal end of the flexible tube. 4. A substrate for receiving two tube containers of a two-part reaction-curable material on an upper surface with their mouths facing forward, and a rear end pivotally attached to a rear end of the substrate, and A holding plate for holding both tube containers on the substrate between the substrate and the substrate, a holding plate tilting means for tilting the holding plate downward, and a rear end at the mouth of the tube container. Connected separately,
2 characterized by having two flexible tubes each having a discharge port at the tip, and an interval adjusting means for adjusting the interval between the tips by bending the flexible tube.
Liquid reaction curable material coating device 5. A device having a grip portion and a lever portion in front of the grip portion on the lower surface side of the substrate, wherein the holding plate tilting means draws the tip of the holding plate downward when the lever portion is drawn down. 5. The coating apparatus for a two-component reaction-curable material according to claim 4, wherein: 6. A holding plate tilting means penetrates the substrate, and a slide shaft whose upper end is connected to the front end of the holding plate with play back and forth, and a slide shaft penetrates slidably below the substrate. A press-down plate and a stopper plate, the press-down plate being pressed upward by a first spring, has a sliding posture that allows the slide shaft to slide before the lever portion is drawn down. When the lever portion is pulled down, one end of the push-down plate is pushed down by the lever portion and tilts downward, so that the engagement portion is engaged with the slide shaft to prevent the slide shaft from sliding.
It is pushed down with the slide shaft against the spring,
When the pulling force of the lever portion is released, the lever returns to the sliding position by the pressing force of the first spring. The stopper plate is pressed upward by the second spring with one end as a fulcrum, and is inclined. Therefore, before the lever portion is drawn down, it is in a meshing position in which it engages with the slide shaft to prevent sliding of the slide shaft, and when the lever portion is pulled down, the second spring slides down along with the slide shaft. By tilting downward against the axis, the sliding position allows the slide shaft to slide, and when the pulling force of the lever is released, the lever returns to the engaging position by the pressing force of the second spring. The coating apparatus for a two-component reaction-curable material according to claim 5, wherein: 7. The two-component reaction-curable material according to claim 6, wherein the fulcrum of the stopper plate has play up and down, and further has an auxiliary spring that presses the vicinity of the fulcrum of the stopper plate downward. Coating device. 8. The distance adjusting means is two link plates each having one end fixed to each flexible tube and the other end screwed between the flexible tubes. 7. A coating device for a two-component reaction curable material according to any one of (1) to (7). 9. An apparatus for coating a two-component reaction curable material according to claim 4, wherein a nozzle cap having a discharge port is detachably connected to a tip of the flexible tube.