JPH06262115A - Adhesive coating nozzle - Google Patents

Abstract

PURPOSE:To obtain an adhesive coating nozzle which has a constitution in which the tip part is separable from a nozzle main body having a through structure so as to facilitate the working and maintenance.cleaning and the cost reduction is attained through the exchange of only the tip part at the times of exchange of the consumables and change of the specifications. CONSTITUTION:The adhesive coating nozzle consists of the nozzle main body 3 fixed to a syringe tip part B2 filling an adhesive R in freely attachably and detachably, a stopper 5 projected by a specified length from an adhesive coating pipe 4, and the tip part 2 which is hermetically sealed and fixed to the nozzle main body 3 in the relation of a prescribed position via an O ring 8 freely detachably.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive application nozzle suitable for application to an adhesive application machine in the mounting process of chip parts and the like.

[0002]

2. Description of the Related Art Generally, an adhesive application nozzle is provided in an adhesive application machine in a mounting process of, for example, chip parts. FIG. 5 shows this adhesive coating machine. The adhesive coating nozzle of this adhesive coating machine is fixed to the tip of the head unit M, and this head unit M is driven by the drive unit N on the conveyor section Q in a horizontal plane. It is made to move.

Further, in this head unit M, FIG.
As shown in FIG. 3, the adhesive application nozzle includes a syringe B filled with the adhesive R and a syringe holder C that covers the syringe B.
It is attached to the tip of. Then, the syringe holder C moves up and down according to the expansion and contraction of the air cylinder E, and at the same time, the timing pulley G, the timing belt H, and the speed reducer J.
Upon receiving the rotation of the motor K via the above, the rotation operation is performed around the vertical axis.

In such an adhesive coating machine, for example, an adhesive coating nozzle is used which is used in a mounting process in which discrete components and chip components are mixedly mounted, and which is usually of a type adapted to the shape of the chip components.

A conventional adhesive application nozzle is shown in FIGS.
As shown in Fig. 2, 2
Adhesive coating pipes 4 each having a predetermined length are arranged so as to penetrate through the front end surface 22a, and the adhesive coating pipes 4 have predetermined lengths on both sides of a line connecting the two adhesive coating pipes 4, respectively. The protruding stopper 5 is press-fitted and fixed to the tip surface 22a,
The back surface of the front end surface 22a serves as a liquid reservoir 22b, and the rear end of the adhesive coating pipe 4 communicates with the liquid reservoir 22b, and the adhesive is discharged through the adhesive coating pipe 4.
On the back surface of the liquid reservoir 22b, an O-ring 8 and an O-ring fitting portion 22d, a syringe insertion portion 22e and a cylinder follow, and mounting plates 22g and 22h are arranged on the outer periphery of these cylinders, so that the adhesive application nozzle 21 I am configuring.

[0006]

However, this conventional adhesive coating nozzle is extremely difficult to process because it has an integrated structure and therefore the inside is processed only from the cylinder opening on one side during processing. .

Further, it is difficult to clean the interior during daily maintenance because it can be cleaned only from the opening on one side thereof. When the stopper 5 that is in direct contact with the wiring board is consumed after a further use for a predetermined time and the protrusion length from the adhesive application pipe 4 changes, the adhesive application nozzle 2
All 1 had to be replaced as consumables. Further, when the design of the tip end surface 22a including the stopper 5 is changed due to a change in use of the adhesive application pipe 4 or the like, there is a problem in that the entire attachment including the commonly used attachment portion must be replaced.

In view of this point, the present invention has an object to provide an adhesive application nozzle which facilitates processing, facilitates cleaning, and requires replacement of only a consumable part.

[0009]

The adhesive application nozzle of the present invention comprises a nozzle body 3 detachably fixed to a syringe B filled with an adhesive R as shown in FIGS. 1 to 3, and an adhesive application nozzle. A tip portion 2 having a pipe 4 and a stopper 5 projecting from the pipe 4 by a predetermined length, and detachably sealed and fixed to the nozzle body 3 through an O-ring 8 in a predetermined positional relationship.
And have.

Further, according to the present invention, in the above-mentioned adhesive application nozzle, a concave portion 7 is provided on the side surface of the tip portion 2, and the concave portion 7 and the set screw 6 cause the nozzle body 3 and the tip portion 2 to have a predetermined positional relationship. It is what

Further, according to the present invention, in the above-mentioned adhesive application nozzle, the nozzle body 3 is provided with a positioning groove 9.

[0012]

According to the adhesive application nozzle of the present invention, since the nozzle body 3 and the tip portion 2 can be separated from each other, the nozzle body 3 has a penetrating structure and can be easily processed. Further, since the tip portion 2 and the nozzle body 3 can be separated from each other, the tip portion 2 can be removed to facilitate daily maintenance and internal cleaning. Also, by replacing the tip portion 2 only, the stopper 5 is consumed and the adhesive This can be applied when the design of the coating pipe 4 is changed.

According to the adhesive application nozzle of the present invention, the concave portion 7 is provided on the side surface of the tip portion 2, and the tip of the set screw 6 screwed from the side surface of the nozzle body 3 is in contact with the center of the concave portion 7. The nozzle body 3 and the tip 2 can be positioned reliably and easily.

According to the adhesive application nozzle of the present invention, the adhesive application nozzle is correctly positioned at the tip of the syringe holder C by the positioning groove 9 provided at the outer edge portion of the mounting support plate 3h arranged at the lower outer periphery of the nozzle body 3. Can be attached and fixed.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the adhesive application nozzle of the present invention will be described below with reference to FIGS. 1 to 3
In FIG. 6, parts corresponding to those in FIGS. 6 and 7 described above are denoted by the same reference numerals, and detailed description thereof will be omitted.

The adhesive application nozzle according to this embodiment is constructed so that the tip portion 2 and the nozzle body 3 can be separated as shown in FIGS.

The tip portion 2 is a cylinder having a thick circular tip surface 2a in the front portion and a liquid reservoir 2b in the rear portion, and two predetermined lengths in the radial direction with respect to the center of the tip surface 2a. The adhesive application pipe 4 is press-fitted and fixed until it reaches the liquid reservoir 2b, and the adhesive is discharged through the inside of the two adhesive application pipes 4. On both sides of the line connecting the two adhesive application pipes 4, round bar-shaped stoppers 5 whose tip ends are cut in a semicircular shape so as to project a predetermined length from the adhesive application pipes 4 are provided. It is press-fitted and fixed to about half the thickness of the surface 2a.

These adhesive application pipe 4 and stopper 5
The length of is such that when the tip of the stopper 5 is in horizontal contact with the wiring board, a predetermined gap is created between the adhesive application pipe 4 and the wiring board, and a predetermined amount of adhesive is applied from the adhesive application pipe 4. As it is ejected.

A recess 7 is provided on the side surface of the tip 2. This recess 7 precisely determines the positional relationship when the nozzle body 3 and the tip 2 are detachably fixed, and is a conical recess 7 corresponding to the tip shape of the set screw 6 (described later).

The nozzle body 3 is fitted with a tip insertion portion 3C that covers the tip portion 2 and is detachably fixed, and an O-ring 8 that seals the joint between the rear liquid reservoir 2b of the tip portion 2 and the nozzle body 3. The O-ring fitting portion 3d and the syringe insertion portion 3e, which is located at the rear of the nozzle body 3 and has an edge portion around the inlet so that the syringe tip portion B2 is smoothly inserted, are opened at both ends on the same axis. It is arranged in a single shape.

Mounting support plates 3f and 3g for supporting the nozzle body 3 and for fixing the syringe holder C are integrally arranged on the outer periphery of the O-ring fitting portion 3d and the rear edge of the syringe inserting portion 3e.

On the other hand, a head portion is provided with a hexagonal hole on the side surface of the tip insertion portion 3C of the nozzle body 3, and the tip is provided so as to face the female screw hole 3j into which the set screw 6 having the tip of a rake is screwed.

Further, a positioning groove 9 is provided on the side surface of the mounting support plate 3h arranged at the rear edge of the syringe insertion portion 3e of the nozzle body 3 at the center of the arc-shaped outer edge portion.

In the adhesive application nozzle of this embodiment, as shown in FIG. 3, the O ring 8 is first attached to the O ring fitting portion 3d from the front of the nozzle body 3, and then the adhesive application pipe 4 and the stopper 5 are attached. The tip portion 2 arranged at a predetermined portion is inserted into the tip portion insertion portion 3C of the nozzle body 3. In this case, the positional relationship between the tip portion 2 and the nozzle body 3 is as follows: the vertical center axis of the concave portion 7 provided on the side surface of the tip portion 2 and the tip portion insertion portion 3C of the nozzle body 3.
The vertical center axis of the female screw hole 3j provided on the side surface of the is adjusted.

Next, the outer edge of the liquid reservoir 2b behind the tip 2 is
After inserting it until it comes into contact with the O-ring 8, a predetermined set screw 6 is inserted and screwed into the female screw hole 3j. The tip of the tip of this set screw 6 is on the vertical central axis of the recess 7 on the side surface of the tip portion 2. Hits the conical surface which is slightly shifted to the lower side. However, if a hexagonal wrench is applied to the head of the set screw 6 and screwing is further advanced, the tip of the set screw 6 will be directed toward the center along the conical surface of the recess 7 and press the O-ring 8. And tip 2
The outer periphery and the bottom surface of the rear liquid reservoir 2b come into close contact with the tip insertion portion 3C of the nozzle body 3 and the O-ring fitting portion 3d, so that sealing and fixing are reliably performed.

In this way, the tip 2 and the nozzle body 3 were integrated to form the adhesive coating nozzle 1. Next, the adhesive coating nozzle 1 and the adhesive coating machine head unit M were formed.
It is fixed with the tip of. The syringe tip portion B2 shown in FIG. 1 is inserted from the rear portion of the adhesive application nozzle 1 and the center of the syringe insertion portion 3e of the nozzle body 3, and the tip portion thereof adheres closely to the inner wall of the pressed O-ring 8 and advances. The middle of the tip end liquid reservoir 2b is reached. Also, this syringe tip B2
The intermediate step portion following the most distal opening abuts on the boundary wall between the syringe insertion portion 3e and the O-ring fitting portion 3d of the nozzle body 3 to determine the position of the syringe insertion portion 3e, and the syringe tip portion B2. The rear end slanted portion is brought into contact with the edge portion around the inlet of the rearmost syringe insertion portion of the nozzle body 3, and when the adhesive agent R is pressure-injected into the liquid reservoir 2b, adhesion from other than the tip end of the adhesive agent application pipe 4 is performed. Make sure that there is no leakage or outflow of agent R.

Finally, the mounting support plates 3g and 3h arranged on the outer periphery of the nozzle body 3 are inserted into predetermined portions of the syringe holder C arranged around the syringe B of the adhesive application machine, and as shown in FIG. A latch (not shown) arranged on the side surface of the tip of the syringe holder C is fitted into the positioning groove 9 provided on the side surface of the arc-shaped outer peripheral portion of the rear mounting support plate 3h shown in the figure, and correct positioning is performed.

The adhesive nozzle having the above construction and fixed to the tip of the adhesive applying machine receives the injection of the adhesive R filled in the syringe B into the liquid reservoir 2b thereof, and the inside of the adhesive applying pipe 4 Through this, the adhesive R is always applied and applied to a predetermined portion on the wiring board in a fixed amount.

In the adhesive application nozzle of this embodiment, the nozzle body 3 and the tip portion 2 are separate bodies, so that the nozzle body 3 has a penetrating structure and can be easily processed.

Further, since the tip portion 2 and the nozzle body 3 can be separated, the tip portion 2 is removed and the liquid reservoir 3b and the O ring 8 are removed.
Also, the adhesive coating pipe 4 and the like can be easily and surely cleaned. Further, by exchanging only the tip portion 2, it is possible to deal with the wear of the stopper 5 and the design change of the pipe 4 and the like.

Further, since the concave portion 7 is provided on the side surface of the tip portion 2 and the tip of the set screw 6 screwed from the side surface of the nozzle body 3 is in contact with the concave portion 7, the positioning of the nozzle body 3 and the tip portion 2 is performed. Can be done reliably and easily.

Further, a mounting support plate 3h below the outer periphery of the nozzle body 3
With the positioning groove 9 provided at the outer edge of the adhesive holder, the adhesive application nozzle can be properly attached and fixed to the tip of the syringe holder C.

In this embodiment, the number of the adhesive application pipes 4 and the number of the stoppers 5 are one pair, but the number of these may be one, or three or more, and they may be provided as needed. .

The present invention is not limited to the above-described embodiments, and it goes without saying that various other configurations can be adopted without departing from the gist of the present invention.

[0035]

According to the present invention, since the adhesive application nozzle is divided into the nozzle body 3 and the tip portion 2, the nozzle body 3 has a penetrating structure, which facilitates the processing. Further, since the nozzle body 3 and the tip portion 2 are detachable, there is an effect that daily maintenance such as maintenance that affects the coating quality and cleaning can be easily performed. Further, even when the adhesive application pipe 4 and the stopper 5 are exchanged when they are worn out, or when the specifications are changed, only the tip 2 of the adhesive application pipe 4 needs to be exchanged and changed, so that the cost can be reduced.

According to the invention, the nozzle body 3 and the tip 2 are
With the set screw 6 and the positioning concave portion 7 provided on the side surface of the tip portion 2, it is possible to assemble easily and surely with high precision.

According to the present invention, the positioning groove 9 is provided on the side surface of the arc-shaped outer edge of the rear mounting support plate 3h of the nozzle body 3.
There is an effect that the syringe holder C can be easily and surely attached to the tip portion thereof.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of an adhesive application nozzle of the present invention.

FIG. 2 is a plan view of an embodiment of the adhesive application nozzle of the present invention.

FIG. 3 is an exploded perspective view of an embodiment of the adhesive application nozzle of the present invention.

FIG. 4 is a schematic view of an embodiment of a head unit equipped with an adhesive application nozzle.

FIG. 5 is a perspective view showing an example of an adhesive application machine equipped with an adhesive application nozzle.

FIG. 6 is a cross-sectional view of an example of a conventional adhesive application nozzle.

FIG. 7 is a plan view of an example of a conventional adhesive application nozzle.

[Explanation of symbols]

 1 Adhesive Application Nozzle 2 Tip 3 Nozzle Body 4 Adhesive Application Pipe 5 Stopper 8 O-ring B2 Syringe Tip R Adhesive

Claims (3)

[Claims] 1. A nozzle main body removably fixed to a syringe filled with an adhesive, an adhesive application pipe and a stopper projecting a predetermined length from the pipe, and the nozzle main body has a predetermined positional relationship with O. An adhesive application nozzle characterized in that it comprises a tip portion which is detachably sealed and fixed via a ring. 2. The adhesive application nozzle according to claim 1, wherein a concave portion is provided on a side surface of the tip portion, and the nozzle body and the tip portion are brought into a predetermined positional relationship by the concave portion and a set screw. Adhesive coating nozzle characterized by. 3. The adhesive application nozzle according to claim 1, wherein the nozzle body is provided with a positioning groove.