JP2009006263A - Adhesive applicator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adhesive applicator capable of efficiently performing an applying operation by a plurality of application parts actuated using a drive source. <P>SOLUTION: This adhesive applicator performs an applying operation to make a plurality of application parts 10A to 10C supported in a vertically movable manner, ascend after making the application parts 10A to 10C descend to their respective application positions (the upper surface of a base S), with the help of ascending/descending means 22A to 22C sharing a drive source. In addition, retaining means 32 and 34 are arranged which move/retain the application parts 10A to 10C selectively, each in higher positions than the application positions, independently of the ascending/descending means 22A to 22C. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an adhesive application device, particularly when an arbitrary application unit is selected from a plurality of application units operated by the same drive source mounted on an application head and an adhesive is applied on a substrate. The present invention relates to an adhesive application device suitable for application.

  Conventionally, when electronic components are mounted (mounted) on a printed circuit board, the electronic components are temporarily fixed on the substrate with an adhesive, and for this reason, they are bonded to the component mounting line that produces the mounted substrate. An agent application device is prepared.

  As such an adhesive application device, for example, Patent Document 1 discloses a link mechanism in which an application portion including a syringe filled with an adhesive and a nozzle at the lower end of the syringe is connected to a cam follower that is driven by rotation of an eccentric cam. Is disclosed in which an adhesive discharged from a nozzle is applied onto a substrate when the application portion is moved downward.

  In addition, as an adhesive application device that applies an adhesive on a substrate by moving the application part up and down by a link mechanism interlocking with such an eccentric cam, a plurality of eccentric cams arranged with different phase differences are arranged in the same manner. Some of them are rotated by a motor (drive source), and a plurality of application portions arranged corresponding to the eccentric cams are sequentially moved up and down.

JP-A-11-197588

  However, in an adhesive application device in which a plurality of application portions that are moved up and down via an eccentric cam as disclosed in Patent Document 1 are arranged by changing the phase of the eccentric cam rotated by the same motor, Since the corresponding application part is moved up and down in the order determined by the phase difference, it is not possible to select an arbitrary application part and apply the adhesive, and this causes time loss. There was a problem that efficiency could not be achieved.

  The present invention has been made to solve the above-described conventional problems, and an arbitrary application unit can be selectively used from among a plurality of application units that are moved up and down by the same drive source, so that the application operation can be performed efficiently. It is an object of the present invention to provide an adhesive application device that can be used.

  The present invention is an adhesive coating apparatus in which a plurality of coating units supported so as to move up and down are moved down after being lowered to a coating position and then lifted by the same lifting means. The above-mentioned problems are solved by providing holding means for moving and holding the parts selectively at positions higher than the application position independently of the lifting means.

  In the present invention, each application portion is formed with an engagement guide having a lateral guide portion, and each application portion is engaged with the lateral guide portion of each engagement guide. A rotating shaft having a first end portion, a second end portion opposite to the first end portion, and a third end portion located below the middle between the both end portions, and a rotating shaft located in the middle of the both end portions. Is lifted and lowered by the drive source, which lowers the second end when lowered and releases the push-down at a predetermined height when raised. You may make it provide a contact part.

  At that time, the holding means abuts on the third end when raised, and rotates the rotating member in a direction to raise the first end; And a second elevating means for maintaining the height, and the contact portion has a contact surface that contacts the second end portion at the lower end and the drive at the upper end. A ball screw rotated by a source may be connected.

  According to the present invention, a plurality of application parts can be moved up and down by the same lifting means with the same drive source to enable application operation by each application part, and these holding means provided separately from the lifting means Since the application part can be selectively raised and held at a position higher than the application position, the adhesive can be applied by selectively using one or more arbitrary application parts.

  Therefore, an arbitrary application part can be used compared to the conventional adhesive application device that can always move the application part up and down in a fixed order, so that the application operation can be performed efficiently.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  In FIG. 1, the principal part of the coating head with which the adhesive agent coating apparatus of one Embodiment which concerns on this invention is provided is shown typically.

  Although the illustration of the coating head itself is omitted, the coating head can be moved in the XY directions by an XY driving means (not shown).

  As will be described later for convenience, a plurality of application units 10 including a syringe filled with an adhesive are mounted on the application head, and each application unit 10 is supported so as to be movable up and down and is moved downward by its own weight. It is energized.

  A pressure adjusting device 12 is attached to each application unit 10 as representatively shown in FIG. 1, and the inside of the syringe is pressurized while the application unit 10 is lowered on the substrate S below. Thus, the adhesive can be discharged from the lower end and applied.

  Further, a linear guide (engagement guide) 14 having a groove portion (guide portion) extending in the horizontal direction in the figure is fixed to the application portion 10.

  Further, the coating head has a substantially T-shaped rotating plate (rotating member) 18 having an arm portion that can be pivoted (swinged) in the vertical direction with the pivot shaft 16 as a fulcrum. Arranged. The rotating plate 18 includes a first bearing (first end) 18A that engages (contacts) with the upper and lower guide surfaces that form the groove of the linear guide 14, and the first bearing across the rotating shaft 16. A lower end of a T-shaped leg portion that intersects with a second bearing (second end portion) 18B at a position opposed to 18A and an arm portion at an intermediate position between both the bearings 18A and 18B and extends below the rotating shaft 16. And a third bearing (third end) 18C. Each of these bearings functions to reduce friction during contact (contact).

  Further, the application head is provided with an elevating means 20 that depresses the second bearing 18B when lowered and stops at an arbitrary height, and releases the depression at a predetermined height when raised.

  The elevating means 20 includes a hammer (contact portion) 22 having a contact surface with the second bearing 18B at the lower end, and a ball screw 24 connected and fixed to the upper end of the hammer 22 and extending upward. When the ball screw 24 is rotated by a motor (drive source) 26 fixed to the coating head, the hammer 22 can be moved up and down.

  In the present embodiment, the motor 26 is rotated, the hammer 22 attached to the ball screw 24 is lowered and brought into contact with the second bearing 18B, thereby generating a force for pushing down the second bearing 18B. The rotating plate 18 is rotated clockwise. With this rotation, the first bearing 18A on the left side in the drawing applies an upward force to the engaged linear guide 14, and is attached to the first bearing 18A via the linear guide 14. The applied portion 10 can be raised as shown in FIG.

  On the contrary, when the motor 26 is rotated in the reverse direction in FIG. 2 and the hammer 22 is raised, the coating unit 10 falls by its own weight, and a force is applied downward to the first bearing 18A. Move in the direction. As a result, the rotating plate 18 rotates counterclockwise, and when the push-down by the hammer 22 with respect to the second bearing 18B is released at a predetermined height, the application unit 10 applies the application shown in FIG. The position descends to the upper surface of the substrate S.

  Further, in the present embodiment, the coating head is moved to the position higher than the coating position by rotating the rotating plate 18 clockwise from the state shown in FIG. The holding means 30 that can be raised and held in this state is provided.

  The holding means 30 includes an air cylinder (second elevating means) 32 fixed at a predetermined position of the coating head, and a guide plate (guide) disposed close to the third bearing 18C that can be moved up and down by the air cylinder 32. Member) 34. Accordingly, when the cylinder rod 32A is contracted and the guide plate 34 is raised from the state shown in FIG. 1, the guide surface 34A inclined downward to the left comes into contact with the third bearing and guides it to the left. Will be pressed.

  As a result, the rotating plate 18 is rotated clockwise, so that the application unit 10 is raised as shown in FIG. 3 and at the same time, the second bearing 18B is lowered below the lowest point reached by the hammer 22. In this case, the air cylinder 32 is stopped and the guide plate 34 is maintained in this state, so that the application unit 10 can be held at a predetermined height regardless of the push-down of the hammer 22.

  Accordingly, as shown in FIGS. 1 and 2, in one application unit 10, the application operation can be repeated by moving the hammer 22 up and down with the guide plate 34 lowered, as shown in FIG. When the guide plate 34 is raised, the application operation can be stopped regardless of the vertical movement of the hammer 22.

  As described above, in the present embodiment, a plurality of coating units 10 having the basic operation functions described in detail above are mounted on the coating head, and each coating unit is moved by a hammer 22 that is moved up and down by the same motor (drive source). 10 is moved up and down to perform a coating operation.

  In FIG. 4, the first to third three application portions 10 </ b> A to 10 </ b> C are mounted, and the same height is provided by the first to third three hammers (contact portions) 22 </ b> A to 22 </ b> C connected to the hammer body. An example of being pushed down is shown. These hammers 22A to 22C are connected as a hammer main body 40. The hammer main body 40 is not shown here, but is rotated by a motor 26 in the same manner as the one hammer 22 shown in FIG. The ball screw 24 is moved up and down.

  Accordingly, the application operation can be performed simultaneously using the hammer body 40, and the first and second application portions 10A and 10B are shown in FIG. 4, but any one of the guide plates 34 is raised to perform the corresponding application. By raising and holding the part, application can be performed by other application parts.

  In FIG. 5, the first and second application parts 10 </ b> A and 10 </ b> B shown in FIG. 4 are held by raising the corresponding guide plates 34 and the third application part 10 </ b> C is selected. A state in which it is raised and applied to the application surface of the substrate S is shown.

  As described in detail above, according to the present embodiment, the coating can be performed by moving up and down by the same motor 26 and simultaneously using the three coating portions 10A to 10C, and one or two can be arbitrarily selected. It can also be applied. Further, by selectively using the application part, it is possible to reduce the load of the application operation and to improve the efficiency.

  In the embodiment, the example in which the vertical movement of the application unit 10 is performed via the ball screw 24 rotated by the motor 26 has been described, but it is arbitrary as long as the hammer body 40 can be moved up and down. . Further, the holding means is not limited to a combination of the guide plate 34 and the air cylinder 32.

  In the embodiment, the application unit 10 is biased downward by its own weight. However, a biasing means such as a spring may be provided separately. Further, the rotating plate 18 may not be T-shaped as long as the first bearing 18A can be lifted and held.

The schematic diagram which shows the outline | summary of the one application part applied to the adhesive agent coating device of one Embodiment which concerns on this invention, and the operation mechanism at the time of application | coating Schematic diagram corresponding to FIG. 1 showing the state of the application part rising. Schematic diagram corresponding to FIG. 1 showing the holding state of the application part Explanatory drawing which shows the state which selected some of several application parts. Explanatory drawing which shows the state currently apply | coated by the selected application | coating part shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Application part 12 ... Pressure adjusting device 14 ... Linear guide 16 ... Rotating shaft 18 ... Rotating plate (rotating member)
18A ... first bearing (first end)
18B ... Second bearing (second end)
18C ... Third bearing (third end)
20 ... Lifting means 22 ... Hammer 24 ... Ball screw 26 ... Motor (drive source)
30 ... Holding means 32 ... Air cylinder 34 ... Guide plate (guide member)
40 ... Hammer body

Claims (4)

An adhesive application device in which a plurality of application parts supported so as to move up and down are moved down after being lowered to the application position, and the drive source is driven by the same lifting means.
An adhesive applicator characterized in that holding means for moving and holding each of the plurality of applicators selectively at a position higher than the application position is provided independently of the elevating means. An engagement guide having a lateral guide portion is formed on each application portion, and
Each of the application portions includes a first end engaged with a lateral guide portion of each engagement guide, a second end at a position opposite to the first end, and a third end positioned below the middle between the both ends. When the rotating member having the end is moved up and down by rotating around the rotating shaft located in the middle of the both ends,
The elevating means includes an abutting portion that is lowered and raised by the drive source and depresses the second end portion when lowered and releases the depressing at a predetermined height when raised. Item 2. The adhesive application device according to Item 1.   The holding means is in contact with the third end when raised, and a guide member that turns the turning member in a direction to raise the first end, and moves the guide member up and down to a predetermined height. The adhesive applicator according to claim 2, further comprising a second lifting and lowering means for maintaining.   3. The ball screw rotated by the drive source is connected to the upper end of the contact portion having a contact surface that contacts the second end at the lower end. Adhesive application device.

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