JPH1066924A - Adhesive coating device - Google Patents

Abstract

(57) Abstract: The present invention relates to an adhesive applying apparatus used for applying an adhesive to an object to be bonded, in which the tip of a discharge section is easily and reliably brought close to the adhesive section, and An object of the present invention is to significantly reduce the bonding time as compared with the related art. A dispenser that discharges an adhesive from a discharge unit, a table on which an object to be bonded having a bonding portion is placed, and a discharge unit that is disposed beside the table, holds a discharge unit of the dispenser, and controls the discharge unit. The apparatus includes a discharge unit moving unit that approaches the bonding portion from obliquely above, and a stage that mounts the discharge unit moving unit and moves the discharge unit moving unit in the bonding direction.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adhesive applying apparatus used for applying an adhesive to an object to be bonded.

[0002]

2. Description of the Related Art Generally, optical devices such as a still camera and a video camera are provided with an auto-focus function and an auto-exposure function, and optical processing is automatically performed.
Light receiving sensors are often used for such functions requiring photometry. FIG. 6 shows a general structure of a light receiving sensor. The light receiving sensor 1 includes an optical system unit 5 holding a lens 3 and a light receiving unit 11 having a photodiode 7 mounted on a substrate 9. The unit 5 and the light receiving unit 11 are fixed at the bonding portions 13 and 15 with an adhesive.

FIG. 7 shows an adhesive coating device used for bonding such an optical system unit 5 and a light receiving unit 11. In this adhesive coating device, the light receiving unit 11 of the light receiving sensor 1 is cured. It is held on a table 19 via a tool 17. The table 19 can be moved in the front-rear direction in the figure, and is placed on the base 21.

[0004] On the base 21, columns 23 are erected at intervals in the horizontal direction, and a transport section 25 is bridged between the columns 23. A sliding member 27 is movably arranged along the transport section 25 in the transport section 25. Sliding member 2
In 7, a head 31 for holding a discharge section 29 of a dispenser for discharging an adhesive is disposed so as to be movable in the vertical direction.

[0005] A control unit 33 is arranged adjacent to one of the columns 23. The control unit 33 has a built-in dispenser body having a function of supplying the adhesive and a control function of controlling the discharge amount of the adhesive.
1, a drive control unit for controlling the drive of the sliding member 27 and the table 19. In the adhesive application device described above, the application of the adhesive to the light receiving sensor 1 is performed as described below.

First, when a start signal is input to the control unit 33, the sliding member 27 is moved along the transport unit 25 by the drive control unit, and the ejection unit 29 of the head 31
Is moved upward. Next, the downward movement of the head 31 lowers the tip of the discharge section 29 until it is located near the bonding section 13 on the right side of the light receiving sensor 1, and immediately starts discharging the adhesive.

Then, the table 19 is moved in the front-rear direction while the adhesive is being discharged from the discharge portion 29, and the bonding of the optical system unit 5 and the bonding portion 13 on the right side of the light receiving unit 11 is performed. Next, after the discharge of the adhesive is stopped, the discharge unit 2
9 is raised and further moved above the left adhesive portion 15.

Then, by the same operation as described above,
Adhesive part 1 on left side of optical system unit 5 and light receiving unit 11
5 are adhered and the operation is completed. In general, an instant adhesive is used as the above-mentioned adhesive in order to improve the efficiency of the bonding operation.

[0009]

However, in the conventional adhesive coating apparatus, the discharge unit 29 is moved in the vertical direction to approach the adherend such as the light receiving sensor 1 or the like, and the adhesive is applied from above. If there is a large step on the adherend,
Alternatively, when the shape of the adherend is complicated,
There is a problem in that it is difficult to bring the tip of No. 9 close to the bonding portion.

When an instant adhesive is used, there is a problem that the adhesive is cured before the adhesive reaches the bonding portion sufficiently, so that a strong adhesion cannot be obtained. Then, in order to perform sufficient bonding, it is necessary to increase the number of bonding portions, and there is a problem that a great amount of time is required for bonding.

SUMMARY OF THE INVENTION The present invention has been made to solve such a conventional problem, and it is possible to easily and surely bring the tip of a discharge portion close to a bonding portion, and to significantly reduce the bonding time as compared with the related art. It is an object of the present invention to provide an adhesive applying device that can be used.

[0012]

According to a first aspect of the present invention, there is provided an adhesive applying apparatus, comprising: a dispenser configured to discharge an adhesive from a discharging unit;
A table on which an object to be bonded having an attachment point is placed, and a discharge unit moving means disposed on a side of the table for holding a discharge unit of the dispenser and moving the discharge unit closer to the adhesion point from obliquely above. And a stage on which the discharging unit moving unit is mounted and which moves the discharging unit moving unit in the bonding direction.

According to a second aspect of the present invention, in the adhesive application apparatus according to the first aspect, the discharge unit moving means includes:
The dispenser has a holding member for holding a discharge portion of the dispenser so that a tip thereof is inclined downward, and a pneumatic or hydraulic cylinder for moving the holding member in an axial direction of the discharge portion. . According to a third aspect of the present invention, there is provided the adhesive application apparatus according to the first or second aspect, wherein the discharge unit moving means is disposed on both sides of the table.

According to a fourth aspect of the present invention, there is provided the adhesive applying apparatus according to any one of the first to third aspects.
One set of the discharge unit moving means is placed in parallel on the stage, and one discharge unit moving means holds a discharge unit for applying the curing accelerator of the adhesive. According to a fifth aspect of the present invention, there is provided the adhesive application device according to any one of the first to fourth aspects, further comprising a fan that ventilates air near the adherend.

(Function) In the adhesive applying apparatus of the first aspect,
By the discharge unit moving unit, the discharge unit of the dispenser is made to approach from the obliquely upper position to the bonding position of the adherend placed on the table, and the discharge unit moving unit is moved by the stage while discharging the adhesive from the discharge unit. Bonding is performed by moving in the bonding direction.

In the adhesive applying apparatus according to the second aspect, when the pneumatic or hydraulic cylinder is operated, the holding member for holding the discharge portion of the dispenser so that the tip is inclined downward is moved in the axial direction of the discharge portion. You. In the adhesive applying device according to claim 3, the discharge unit moving means is disposed on both sides of the table,
Bonding of the bonding portions on both sides of the adherend is performed simultaneously.

According to a fourth aspect of the present invention, an adhesive is discharged from a discharge portion held by the other discharge portion moving device of the set of discharge portion moving devices to a bonding portion of an object to be bonded. A curing accelerator for the adhesive is discharged from the discharge section held by the discharge section moving means to the bonding location where the adhesive is applied.
In the adhesive applying device according to the fifth aspect, air near the adherend is ventilated by the fan.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIGS. 1 and 2 show a first embodiment of the adhesive application device of the present invention, and reference numeral 41 denotes a base member. In the center of the base member 41, a table 45 is provided by a rodless pneumatic cylinder 43.
Are movably arranged in the front-rear direction.

On the table 45, an adherend 49 made of, for example, a light receiving sensor is placed via a mounting table 47. On both sides of the table 45 of the base member 41,
A stage 51 is provided.

The stage 51 is movably supported by a linear guide 53 and a ball screw 55, and is driven by a stepping motor 57. On stage 51,
Discharge unit moving means 61 for holding the discharge unit 59 of the dispenser and bringing the discharge unit 59 closer to the position where the object 49 is adhered from obliquely above is provided.

The discharge section moving means 61 includes a holding member 63 for holding the discharge section 59 of the dispenser so that the tip is inclined downward, and a pneumatic cylinder 65 for moving the holding member 63 in the axial direction of the discharge section 59. And In this embodiment, a bracket 67 is fixed to the distal end of the holding member 63, and a rotating member 69 that directly supports the ejection unit 59 is disposed on the bracket 67.

The rotating member 69 is formed with an arc-shaped long hole 69a. By rotating the rotating member 69 and fixing it with a bolt 71, the angle is set, for example, between 5 and 30 degrees. It can be performed. A rectangular parallelepiped cover member 73 is arranged so as to cover the table 45 and the discharge unit moving means 61.

On the upper surface of the cover member 73, a dispenser body 75 having a function of supplying the adhesive and a control function of controlling the discharge amount of the adhesive is disposed. Further, below the base member 41, a drive control unit 77 that controls the drive of the table 45, the stage 51, and the pneumatic cylinder 65 is disposed. A fan 79 for ventilating the air inside the cover member 73 is arranged on the cover member 73.

The discharge portion 59 of the dispenser is formed of a metal pipe for supporting a tube 81 connected to the dispenser body 75. In addition, the dispenser described above includes a tubing pump type dispenser that feeds the adhesive inside the tube while crushing the tube with a rotating roller, and a cylinder type dispenser that discharges the adhesive inside the cylinder by air pressurization only during the discharge time. Alternatively, a valve-tank type dispenser that opens and closes a valve of a discharge unit connected by a tube to a container containing an adhesive and discharges the same may be used.

The dispenser system is generally selected depending on the viscosity of the adhesive. For example, a tubing pump type dispenser is used for a low viscosity (2,000 cps or less) instantaneous adhesive such as a cyano type. It is desirable. In the adhesive application apparatus described above, for example, the application of the adhesive to the adherend 49 including the light receiving sensor is performed as described below.

First, when a start signal is input to the drive control section 77, the pneumatic cylinder 65 is operated, and the discharge section 59 of the dispenser is connected to the bonding sections 49a, 49b of the bonding object 49.
Is approached obliquely from above. Next, immediately from the dispenser main body 75 through the tube 81, the discharge portion 59 is discharged.
The discharge of the adhesive supplied from the discharge section 59 is started.

Then, the stage 51 is moved back and forth while discharging the adhesive from the discharge portion 59, and
The bonding of the bonding portions 49a and 49b on both sides is performed simultaneously. In the adhesive coating apparatus configured as described above, the discharge unit moving means 61 causes the discharge unit 59 of the dispenser to approach the bonding units 49a and 49b of the adherend 49 from obliquely above. The tip of the portion 59 can be easily and reliably approached to the bonding portions 49a and 49b.

In the above-described adhesive application apparatus, the holding member 63 for holding the discharge portion 59 of the dispenser so that the tip is inclined downward is moved in the axial direction of the discharge portion 59 by the pneumatic cylinder 65. As a result, the discharge portion 59 of the dispenser can be more easily and reliably approached to the bonding portions 49a and 49b of the bonded object 49 placed on the table 45 from obliquely above.

Further, in the above-mentioned adhesive applying apparatus, the discharging unit moving means 61 is disposed on both sides of the table 45, and the bonding parts 49a, 49b on both sides of the object 49 are simultaneously bonded. The time can be significantly reduced compared to the conventional case. Also, the object to be bonded 49 is
, The time for curing the adhesive can be reduced.

FIGS. 3 and 4 show a second embodiment of the adhesive coating apparatus of the present invention. In this embodiment, FIG.
On the stage 51, a pair of ejection part moving means 61, 83
Are placed in parallel. Then, the discharge unit moving means 83
In addition, a discharge unit 85 for applying an adhesive curing accelerator is held.

The cover member 73 has an object 49 to be bonded.
A fan 79 for ventilating the air in the vicinity of is provided.
In this adhesive application device, a set of ejection part moving means 61,
Of the 83, the ejection unit 59 held by the ejection unit moving unit 61
The adhesive is discharged to the bonding portions 49a and 49b of the object 49, and the curing accelerator of the adhesive is discharged from the discharging portion 85 held by the discharging portion moving means 83 to the bonding portion where the adhesive is applied. .

Therefore, the bonding portion 49 to which the adhesive is applied
The curing accelerator for the adhesive can be easily and reliably applied to the a and 49b, and the curing time for the adhesive can be shortened. That is, usually, even for an instant adhesive, a time of about 30 seconds is required until it is completely cured, but by applying a curing accelerator, the curing time of the adhesive can be greatly reduced. .

Further, since the air in the vicinity of the adherend is ventilated by the fan 79, it is possible to prevent the atmosphere of the curing accelerator of the adhesive from being formed, and the curing accelerator is used for the adhesive. It is possible to prevent the discharge unit 59 from being clogged by adhering to the discharge unit 59.

FIG. 5 shows a third embodiment of the adhesive application apparatus of the present invention. In this embodiment, a hole 7 is formed on the upper surface of the cover member 73 at a position above the mounting table 47.
3a are formed. A transport device 87 for supplying the objects to be bonded 49c and 49d to the mounting table 47 is disposed above the hole 73a.

The transfer device 87 includes a moving body 89 that is moved in the vertical direction, and a hand 91 that uses a pneumatic cylinder held by the moving body 89. Then, by holding the objects to be bonded 49c and 49d by the hand 91 during the bonding operation, it is possible to prevent displacement of the adhesive during curing. After the bonding operation is completed, the objects to be bonded 49c and 49d are taken out of the hole 73a by the hand 91.

It is to be noted that, for example, by installing a TV camera (not shown) in place of the above-described transport device 87, the bonding operation can be easily monitored. In the above-described embodiment, the moving means of the holding member 63 is provided with the pneumatic cylinder 65.
Has been described, but the present invention is not limited to such an embodiment. For example, a hydraulic cylinder may be used.

Further, in the above-described embodiment, the versatility can be further increased by using a Z table movable in the height direction between the discharge unit moving means 61 and the stage 51.

[0038]

As described above, in the adhesive applying apparatus according to the first aspect, the discharge portion of the dispenser is made to approach the bonding portion of the object from obliquely upward by the discharging portion moving means. The tip of the discharge unit can be easily and reliably brought close to the bonding unit.

In the adhesive applying apparatus according to the second aspect, the holding member for holding the discharge portion of the dispenser so that the tip is inclined downward by the pneumatic or hydraulic cylinder is moved in the axial direction of the discharge portion. Therefore, the discharge portion of the dispenser can be more easily and surely approached from the obliquely upward position to the bonding position of the adherend placed on the table.

In the adhesive applying apparatus according to the third aspect, the discharge unit moving means is disposed on both sides of the table so as to simultaneously bond the bonding portions on both sides of the object to be bonded. Can be shortened. In the adhesive application device according to the fourth aspect, since one set of the discharge unit moving means is placed in parallel on the stage, the curing accelerator of the adhesive is easily and surely applied to the bonding location where the adhesive is applied. It is possible to shorten the curing time of the adhesive.

In the adhesive applying apparatus according to the fifth aspect, the air near the adherend is ventilated by the fan.
The curing time of the adhesive can be reduced. Further, it is possible to prevent the atmosphere of the curing accelerator of the adhesive from being formed, and to prevent the curing accelerator from adhering to the discharge portion of the adhesive and clogging the discharge portion.

[Brief description of the drawings]

FIG. 1 is a front view showing a first embodiment of an adhesive application device of the present invention.

FIG. 2 is a top view of the adhesive application device of FIG. 1;

FIG. 3 is a front view showing a second embodiment of the adhesive application device of the present invention.

FIG. 4 is a top view of the adhesive application device of FIG. 3;

FIG. 5 is a front view showing a third embodiment of the adhesive application device of the present invention.

FIG. 6 is a cross-sectional view showing a light receiving sensor as an adherend.

FIG. 7 is a front view showing a conventional adhesive application device.

[Explanation of symbols]

 45 Table 49 Adhered object 51 Stage 59, 85 Discharge unit 61, 83 Discharge unit moving means 63 Holding member 65 Pneumatic cylinder 79 Fan

Claims (5)

[Claims] A dispenser that discharges an adhesive from a discharge unit; a table on which an object to be bonded having an adhesion portion is placed; and a discharge unit that is disposed beside the table and holds a discharge unit of the dispenser. A discharge section moving means for moving the discharge section moving means in the bonding direction, wherein the discharge section moving means moves the discharge section moving means in the bonding direction. apparatus. 2. The adhesive applying apparatus according to claim 1, wherein the discharge unit moving unit holds a discharge unit of the dispenser such that a tip thereof is inclined downward, and the discharge unit moves the holding member to the discharge unit. And a pneumatic or hydraulic cylinder that moves in the axial direction of the adhesive. 3. The adhesive application device according to claim 1, wherein the discharge unit moving unit is disposed on both sides of the table. 4. The adhesive applying apparatus according to claim 1, wherein one set of the discharging unit moving units is placed in parallel on the stage, and the one discharging unit moving unit is mounted on the stage. An adhesive application device characterized by holding a discharge section for applying an adhesive curing accelerator. 5. The adhesive application device according to claim 1, further comprising a fan that ventilates air near the adherend.