JPH06254456A - Adhesive applying apparatus - Google Patents

Abstract

PURPOSE:To provide an adhesive applying apparatus which can apply an adhesive evenly with a constant applying amount and a constant width. CONSTITUTION:An adhesive applying apparatus is composed of a brush member 1 for applying an adhesive, a head 2 to hold the brush member 1, and a supplying route 3 to supply an adhesive S to the brush member 1 by pressure. The head 2 can move closer to or part from a material W to be coated by a driving system M. By the head's 2 moving closer to the material W to be coated, the hair part 5 of the brush member 1 is brought into contact with the material W to be coated and the adhesive supplied to the hair part 5 is applied to the material W to be coated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive coating device.

[0002]

2. Description of the Related Art A conventional adhesive applying device supplies an adhesive into a small-diameter tube and extrudes the adhesive in the tube from a nozzle at the tip of the tube by air pressure or squeezing the tube. It was

[0003]

However, in the above-described conventional adhesive coating device, the adhesive is accumulated at the tip of the nozzle due to the intermittent coating operation, and the accumulated amount is applied to the member to be coated at the start of coating. As a result, uneven coating may occur. When air enters the small diameter tube, the adhesive discharged from the nozzle of the small diameter tube may be interrupted, so that the adhesive cannot be uniformly applied to the member to be coated.

Further, it is difficult to apply a liquid having a constant width, and it takes time to adjust the gap between the nozzle and the member to be coated, resulting in poor workability.

Therefore, it is an object of the present invention to provide an adhesive coating device capable of performing coating of a constant width with a stable coating amount.

[0006]

In order to achieve the above-mentioned object, an adhesive applying apparatus according to the present invention includes a brush member for applying an adhesive, a head for holding the brush member, and a brush member. A supply path for pressure-feeding and supplying the adhesive, and a drive mechanism that enables the head to approach and separate from the member to be coated to enable the brush member to apply the adhesive to the member to be coated. It is a thing.

[0007]

Since the head can be moved toward and away from the member to be coated by the drive mechanism and the brush member can be moved toward and away from the member to be coated, the brush member can be brought into contact with the member to be coated. Since the adhesive is supplied to the brush member from the supply path, it is possible to apply the adhesive to the member to be coated.

At this time, when air enters the supply passage to form air bubbles and the adhesive is not continuously supplied from the supply passage, or when the flow rate of the discharged adhesive changes due to pressure fluctuation or the like. Moreover, since the adhesive is attached to the brush member, it does not affect the application of the adhesive.

The adhesive is a so-called brush coating,
A uniform width can be applied easily and can be applied evenly.

[0010]

The present invention will be described in detail below with reference to the drawings illustrating the embodiments.

FIGS. 1 and 2 show an adhesive applying device according to the present invention, which comprises a brush member 1 for applying an adhesive, a head 2 for holding the brush member 1, and an adhesive for adhering to the brush member 1. A supply path 3 for pressure-feeding the agent S and a drive mechanism M for moving the head 2 toward and away from the member W to be coated are provided.

The brush member 1 comprises a body portion 4 held by the head 2 and a bristle portion 5 attached to the tip of the body portion 4.

The supply path 3 is provided with a tip member 6 made of a metal pipe such as stainless steel inserted into the head 2 and a tube 7 made of synthetic resin such as fluororesin inserted into the tip member 6. .

That is, in the tip member 6, the tip portion 6a is bent, the tip opening portion 7a of the tube 7 inserted into the tip member 6 corresponds to the bristle portion 5 of the brush member 1, and the supply path 3 is provided.
As shown in FIG. 2, the adhesive S inside the bristle portion 5 of the brush member 1
Is supplied to.

Further, the drive mechanism M in this case comprises a cylinder mechanism 8. That is, the cylinder mechanism 8 has its main body 8a.
Is attached to a fixing member (not shown), and its piston rod 8b is attached to the head 2.

A position detector (not shown) for detecting the presence of the piston rod 8b is provided in the vicinity of the piston rod 8b, and a detection signal is output from this detector when the piston rod 8b expands and contracts. To be done.

Therefore, if the piston rod 8b extends from the state shown in FIG. 1 as shown by the arrow A in FIG. 2, the head 2 approaches the member W to be coated, and the piston rod 8b moves from the state shown in FIG. 2 to the arrow shown in FIG. When retracted as shown in B, the head 2 is separated from the member W to be coated.

Although not shown, the member W to be coated is
It has a cylindrical outer shape and is mounted on a rotary table provided coaxially therewith. Therefore, the coated member W is rotationally driven integrally with the rotation of the rotary table.

In this case, as shown in FIG. 2, when the piston rod 8b is in the extended state, the bristle portion 5 of the brush member 1 is formed.
Is set so as to contact the coated member W, and the adhesive is applied to the outer peripheral surface of the coated member W.

Thus, as shown in FIG. 3, the supply path 3 is connected to an adhesive supply container 9 in communication therewith.
The syringe 10 is communicatively connected via the tube 11.

The syringe 10 is also connected to a pressure applying mechanism 12 for applying a constant air pressure to the inside of the syringe 10.

The pressure applying mechanism 12 includes a timer 13 and
A signal line 17 connected to a pressure gauge 14, a pressure control valve 15, and a control member 16 such as a solenoid that controls opening and closing of the container 9.
And Reference numeral 18 denotes a tube for connecting and connecting the syringe 10 and the pressure applying mechanism 12 with each other, and a constant pressure can be applied to the inside of the syringe 10 by supplying air from the tube 18.

Further, a regulating valve 19 is attached to the container 9, and the adhesive S to the supply path 3 in the opened state of the container 9 is provided.
The supply amount of can be adjusted.

Next, the operation of the adhesive coating device constructed as described above will be described.

First, with the valve 15 for pressure control, the syringe
The pressure of the air to be applied to 10 is determined and the adjustment valve
At 19, the adhesive S to the supply path 3 in the open state of the container 9
And the opening / closing time of the container 9 is determined by the timer 13.

In the present embodiment, although not shown in the drawings, the timer 13 also defines the rotation operation time of the rotary table that simultaneously rotates the coated member W.

Next, the apparatus is started and driven by the driving mechanism M to bring the head 2 close to the member W to be coated, and the bristle portion 5 of the brush member 1 is brought into contact with the member W to be coated. Along with this contact operation with the member W to be coated, a position detector (not shown) provided in the vicinity of the piston rod 8b operates, thereby exciting the timer 13 and the signal line 17.

After that, by the signal from the signal line 17, the container 9 is opened and the adhesive S is supplied to the supply path 3, and the adhesive S is supplied to the bristle portion 5 of the brush member 1 through the supply path 3. To do.

As a result, the adhesive S supplied to the bristle portion 5
The application of W to the member W to be coated is started.

Next, when the application work by the timer 13 for a predetermined time is completed, the container 9 is closed and the supply of the adhesive S to the supply path 3 is stopped. At the same time, the piston rod 8b retracts, and the bristle portion 5 separates from the coated member W.

Therefore, according to the above adhesive applying device,
Since a constant air pressure is constantly applied to the inside of the syringe 10 and the opening / closing time of the container 9 is controlled in this state, it is possible to discharge the adhesive S from the supply path 3 in an accurate amount. Further, since the air pressure can be adjusted by the pressure control valve 15 and the opening / closing amount by the adjusting valve 19 can be adjusted with high accuracy, a very small amount of control can be performed.

Further, since a constant air pressure is constantly applied to the inside of the syringe 10, no bubbles enter into the supply passage 3, and a constant amount of the adhesive S is constantly supplied from the supply passage 3 to the bristle portion of the brush member 1. 5 is supplied.

If air bubbles enter the supply passage 3, the adhesive S
Even if is not continuously supplied to the bristle portion 5, the adhesive agent S is attached to the bristle portion 5, and the application of the adhesive agent S to the coating target member W has no effect.

That is, the adhesive S can be applied to the member W to be coated with a uniform width and a stable coating amount.
Moreover, since the gap between the bristles 5 and the member W to be coated does not need to be adjusted so finely, for example, even when the bristles 5 are replaced or the outer shape of the member W to be coated is changed, the gap adjustment is performed. And is extremely easy to set up.

Further, in this embodiment, the member W to be coated has a cylindrical shape. However, even if the coating surface has a polygonal surface or the surface has irregularities, By utilizing the elasticity, the gap difference is absorbed and uniform coating is possible.

Next, FIG. 4 shows another embodiment. In this case, two brush members 1 are provided and two supply paths 3 are provided correspondingly.

That is, the drive mechanism M holds the holding body 20 for holding the pair of heads 2, 2, the actuator 21 for rotating the holding body 20 around the vertical axis as indicated by the arrows C and D, and the actuator 21 for the arrow. And a cylinder mechanism (not shown) that moves up and down as described above.

The heads 2 and 2 are attached to the holder 20 so that they can approach and separate from each other.

Next, a method of applying an adhesive to the member W to be coated with this adhesive coating device will be described.

By the cylinder mechanism of the drive mechanism M, the heads 2 and 2 are moved closer to the member W to be coated, and the heads 2 and 2 are moved to move the bristle portions 5 of the brush member 1 of the heads 2 and 2 to the positions shown in FIG. As shown in FIG.

In this case, the brush members 1 and 1 are positioned 180 ° opposite to the center of the member W to be coated.

Then, the actuator 21 holds the holder 20.
By extension, each head 2, 2 is rotated about the axis O in the direction of arrow C by about 180 °, and then each head 2, 2 is rotated about the axis O in the direction of arrow D.

When rotating, each supply path 3,
Similarly to the above-described embodiment, the adhesive S is supplied to each of the brushes 3, and the adhesive S is supplied to the bristle portions 5 and 5 of the brush members 1 and 1, respectively.
The adhesive S is applied to the member W to be coated by this rotation.
Is applied.

Therefore, in this adhesive applying device, the applied member W in which the applied portion cannot be rotated (moved), or the applied portion cannot be placed coaxially with the rotary drive shaft of the rotary table or the like. , (Specifically, the motor integrally incorporated in the rectangular base of the magnetic disk drive) is suitable for the application of the adhesive S.

Further, in this embodiment, since each of the brush members 1 and 1 reciprocates 180 ° on the surface of the member to be coated W, the coating width and the coating thickness are both more uniform and uniform. Can be realized. Further, it is possible to obtain a substantially double coating area by changing the coating positions of the brush members 1 and 1 during the reciprocating operation in the reciprocating operation.

Next, FIG. 6 shows a modified example of the brush member 1,
In this case, the main body portion 4 is provided with the axial direction hole portion 22, and the tip end of the supply path 3 is connected to the base end opening portion of the hole portion 22 so as to communicate therewith.

For example, a threaded portion is provided at the base end opening of the hole 22 and the threaded portion and the threaded portion provided at the tip of the supply passage 3 are screwed together to connect the main body portion 4 and the supply passage 3 to each other. Link.

Therefore, the adhesive S sent to the supply path 3
Reaches the bristle portion 5 through the hole 22 and the adhesive S
Therefore, even if this brush member 1 is used, the adhesive S can be applied to the member W to be coated with a uniform coating amount and a stable coating amount with a uniform width, as in the above-described embodiment. .

The present invention is not limited to the above-mentioned embodiment, and the design can be freely changed without departing from the gist of the present invention. It may be that which is squeezed and pressure-fed, or that the air pressure is directly applied to the supply path to be pressure-fed.

That is, air bubbles are formed in the supply path, and the adhesive S
Even when the hair is discontinuously supplied to the bristle portion 5 of the brush member 1, the adhesive S adheres to the bristle portion 5, and the adhered adhesive S
This is because the adhesive S can be applied at.

Further, the drive mechanism M may be provided with a nut member and a screw shaft screwed into the nut member so as to be capable of screwing back and forth. The adhesive S used is, for example, an acrylic adhesive such as an ultraviolet curable adhesive or an anaerobic adhesive.

In the above two embodiments, the members W to be coated each have a cylindrical shape, and the outer peripheral surface is coated along the circumferential direction. It is needless to say that the surface of the brush member 1 can also be applied by changing the arrangement of the brush member 1.

[0053]

Since the present invention is configured as described above, it has the following effects.

The adhesive S can be applied to the member W to be coated with a uniform width and a stable coating amount, and a product manufactured by applying the adhesive S by the adhesive coating device. Will be of high quality.

Further, since the coating is so-called brush coating, the coating width can be freely changed, the coating width can be made large, and the usability is improved.

[Brief description of drawings]

FIG. 1 is a schematic view of an essential part showing an embodiment of the present invention.

FIG. 2 is a simplified view of an essential part.

FIG. 3 is an overall simplified diagram.

FIG. 4 is a schematic view of a main part showing another embodiment.

FIG. 5 is a simplified plan view showing an adhesive application state.

FIG. 6 is an enlarged cross-sectional view showing a modified example of the brush member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Brush member 2 Head 3 Supply path M Drive mechanism S Adhesive W W Coated member

Claims (1)

[Claims] 1. A brush member 1 for applying an adhesive, a head 2 for holding the brush member 1, a supply path 3 for supplying the adhesive S by pressure to the brush member 1, and a head 2 for covering the head 2. A drive mechanism M that enables the brush member 1 to apply an adhesive agent to the member W to be coated by moving the brush member 1 close to or away from the member W.
And an adhesive coating device.