JP3874955B2 - XY table device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an XY table apparatus that freely moves a plate-like workpiece such as a printed circuit board in the XY axis direction.
[0002]
[Prior art]
Conventionally, this type of XY table device includes a device as shown in FIG.
[0003]
In the conventional XY table apparatus, the second stage (X-axis table) c moves in the X-axis direction to the X-axis guide means (X-axis LM guide) b installed on the first stage (X-axis base) a. A Y-axis guide means (Y-axis LM guide) d is installed on the second stage c in the Y-axis direction orthogonal to the X-axis.
[0004]
A third stage (Y-axis table) e is supported on the Y-axis guide means d so as to be movable in the Y-axis direction. The third stage e has a plate-shaped workpiece ( For example, turret mechanisms (not shown) for performing predetermined processing are installed on the upper and lower surfaces of a printed circuit board.
[0005]
Further, an X-axis driving means f for driving the second stage c in the X-axis direction is provided on the side of the first stage a, and a third stage e is driven in the Y-axis direction on the side of the second stage c. Y-axis driving means g is provided.
[0006]
The X-axis drive means f is composed of a ball screw h supported on the first stage a so as to be parallel to the X-axis guide means b, and a second stage drive motor i that rotationally drives the ball screw h. The joined ball nut j is attached to the second stage c side, and the second stage c is moved in the X-axis direction by rotating the ball screw h forward and backward by the pulse-controlled second stage drive motor i. It can be driven.
[0007]
On the other hand, the Y-axis drive means g is composed of a ball screw k supported on the second stage c so as to be parallel to the Y-axis guide means d, and a third stage drive motor m that rotationally drives the ball screw k. A ball nut n screwed to the third stage e is attached to the third stage e side, and the third stage e is rotated in the forward and reverse directions by the third stage drive motor m that is pulse-controlled, thereby bringing the third stage e into the Y axis. It can be driven in the direction.
[0008]
[Problems to be solved by the invention]
In the conventional XY table apparatus, since the turret mechanism that performs processing such as mounting of electronic components on the upper and lower surfaces of a plate-like workpiece such as a printed circuit board is installed on the third stage e, the second stage c and the third stage e adopts a hollow structure as shown in FIG.
[0009]
In addition, since there are various sizes of general-purpose turret mechanisms, the hollow portions of the second stage c and the third stage e are enlarged in advance so that the turret mechanism can be adapted to these turret mechanisms. Since the stage c and the third stage e are not interfered with each other, there is a problem that the XY table becomes large and the processing apparatus for mounting the XY table becomes large and expensive.
[0010]
Furthermore, the lower tool of the turret mechanism that performs processing such as mounting electronic components on the lower surface side of a plate-like workpiece such as a printed circuit board needs to have an upper surface lower than the upper surface of the second stage c so as not to interfere with the third stage e. As a result, the vertical stroke of the lower tool becomes longer, so that the operation time for processing the lower surface of the plate-like workpiece becomes longer, resulting in poor productivity.
[0011]
The present invention has been made to remedy such conventional problems, and provides an XY table device that can shorten the vertical stroke of the lower tool provided in the turret mechanism and can reduce the size of the entire processing device. The purpose is to improve productivity.
[0012]
[Means for Solving the Problems]
In order to achieve the above object, the invention described in claim 1 is an XY table device for moving a plate-like workpiece in the XY-axis direction by an XY table, and grips the XY table on one end side of the plate-like workpiece. And a Y-axis driving means for driving the workpiece gripping means in the Y-axis direction, and an X-axis driving means for driving the Y-axis driving means in the X-axis direction orthogonal to the Y-axis. The other end side is moved in the X-axis direction following the Y-axis driving means, and the other end side of the plate-like workpiece is supported by a work guide means that is movably supported in the Y-axis direction. .
[0013]
With the above configuration, the electronic component can be mounted on both sides of the plate-like workpiece by gripping one end side of the plate-like workpiece and moving the plate-like workpiece in the XY direction. The XY table for moving the workpiece in the XY direction can be reduced in size, and a gap through which the work guide means for supporting the other end of the plate-like workpiece can pass is provided between the upper and lower tools of the turret mechanism. Therefore, the vertical stroke of the lower tool can be reduced, and the operation time of the lower tool can be shortened, thereby improving the productivity.
[0014]
In order to achieve the above object, the invention described in claim 2 is characterized in that the workpiece gripping means includes a plate-like workpiece support member that sandwiches one end of the plate-like workpiece, and a reference pin that positions the plate-like workpiece. And a positioning lever that is rotatable in the vertical direction.
[0015]
With the above configuration, the plate-like workpiece is inserted into the XY table simply by inserting the plate-like workpiece into the plate base support member and inserting the reference pin of the positioning lever into the reference hole of the plate-like workpiece. Can be attached and positioned, so that the work of detaching the plate-like workpiece can be performed efficiently in a short time.
[0016]
In order to achieve the above object, the invention according to claim 3 is characterized in that the X-axis driving means and the Y-axis driving means are screwed into the ball screw rotated forward and backward by a driving source comprising a pulse motor, and the ball screw. The electric slider is composed of a slider that moves while being guided by a guide rail as the ball screw rotates.
[0017]
With the above configuration, the plate-like workpiece can be moved in the XY direction at high speed, so the mounting time of the electronic component can be shortened and the plate-like workpiece can be positioned at the electronic component mounting position with high accuracy. Therefore, problems such as mounting defects do not occur.
[0018]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings shown in FIGS.
[0019]
FIG. 1 is a partially cutaway perspective view of an XY table device provided in an electronic component mounting machine as a processing device for processing a printed circuit board which is one of plate-like workpieces, FIG. 2 is a front view thereof, and FIG. Is a partially cutaway perspective view of the electric slider, FIG. 4 is a side view of the work gripping means, and FIG.
[0020]
1 and 2, reference numeral 1 denotes a base constituting the upper surface of the electronic component mounting machine. A pair of X-axis bases 2 spaced apart in the Y-axis direction on the base 1 are in the X-axis direction orthogonal to the Y-axis. The X-axis LM guide 3 is installed on the X-axis base 2 in the X-axis direction.
[0021]
A slide base 5 is supported on each X-axis LM guide 3 via a first slider 4 so as to be movable in the X-axis direction, and a work width adjusting rail 6 installed on the slide base 5. A guide plate 8 is supported on the second slider 7 so as to be movable in the X-axis direction via the second slider 7.
[0022]
Stoppers 9 are provided at both ends of the work width adjusting rail 6 so that the guide plate 8 cannot be removed from the work width adjusting rail 6. Clamping means 10 for fixing the guide plate 8 is provided at an arbitrary position of the adjustment rail 6 and can be fixed and released by operating the clamp lever 10a.
[0023]
A support member 8a formed in an approximately inverted L shape is fixed on each guide plate 8, and a work guide means 12 is horizontally mounted between these support members 8a so as to be parallel to the Y axis. Has been.
[0024]
The work guide means 12 is composed of a hook-like member 12a whose both ends are fixed to the support member 8a, and a large number of bearings 12b supported at equal intervals in the longitudinal direction of the hook-like member 12a. The other end side of the printed circuit board 13 rolls between the bearings 12b.
[0025]
Further, on the side facing the bearing 12a, a Y-axis drive means 17 comprising an electric slider 16 for driving a work gripping means 15 for gripping one end side of the printed circuit board 13 in the Y-axis direction is installed.
[0026]
As shown in FIG. 3, the electric slider 16 has an elongated rectangular box-like case 16a, a ball screw 16c provided in the case 16a along the longitudinal direction, and both ends supported on the case 16a by bearings 16b. And a slider 16e screwed to the ball screw 16c and supported by a pair of guide rails 16d provided in the case 16a, and connected to one end of the ball screw 16c, such as a pulse motor. The slider 16e can be moved along the guide rail 16d by rotating the ball screw 16c forward and backward by a Y-axis drive source (not shown).
[0027]
The Y-axis driving means 17 composed of the electric slider 16 has both ends of the case 16a fixed to the slide base 5 by brackets 18, and the ball screw 16c is rotated forward and backward by a Y-axis driving source to thereby move the slider 16e. Can be moved in the Y-axis direction, and an intermediate portion of the slider plate 19 is fixed to the slider 16e.
[0028]
A pair of support brackets 19a are provided on both ends of the slider plate 19 so as to protrude in the Y-axis direction, and the gripping means 15 is provided between the support brackets 19a.
[0029]
The workpiece gripping means 15 includes a printed circuit board support member 15b which is a plate base material support member having an insertion groove 15a into which one end side of the printed circuit board 13 can be inserted, and the printed circuit board 13 having one end side supported by the printed circuit board support member 15b. It comprises a pair of positioning means 15c for positioning and holding.
[0030]
The positioning means 15c has a positioning lever 15e having a base end portion fixed to a rotating shaft 15d that is horizontally supported by the support bracket 19a, and a printed circuit board 13 at the tip of the positioning lever 15e. A reference pin 15f that fits from above is projected into a reference hole (not shown) formed in the shaft, and the positioning lever 15e is provided on one end side of the rotation shaft 15d via the rotation shaft 15d. Is attached to a reference pin up / down lever 15g that moves up and down from the solid line position shown in FIG.
[0031]
On the other hand, on the base 1, X-axis driving means 20 is installed in the X-axis direction along one X-axis base 2.
[0032]
Similarly to the Y-axis drive means 17, the X-axis drive means 20 is also composed of the electric slider 16 shown in FIG. 3, and the bottom surface of the case 16a is fixed on the base 1 and is not shown by an X-axis drive source (not shown). A slider 16e is movable in the X-axis direction by a ball screw 16c rotated forward and backward, and a connection bracket 21a of the connection means 21 is fixed on the slider 16e.
[0033]
The connecting means 21 includes a connecting bracket 21a fixed to the slider 16e and a connecting plate 21b fixed to the bottom surface of the case 16a of the Y-axis driving means 17, and a cam follower 21c protruding from one end of the connecting bracket 21a. Is inserted from below into an elongated hole 21d elongated in the X-axis direction opened in the connecting plate 21b, and connects the case 16a of the Y-axis driving means 17 and the slider 16e of the X-axis driving means 20 thereby. The X-axis drive means 20 can drive the Y-axis drive means 17 in the X-axis direction.
[0034]
A turret mechanism 22 for mounting electronic components (not shown) is installed on the upper and lower surfaces of the printed circuit board 13 on the base 1.
[0035]
The turret mechanism 22 includes an upper turret 23 in which a plurality of upper tools 23a are arranged on the same circumference, and a lower turret 24 in which a plurality of lower tools 24a are arranged, and between the upper and lower tools 23a, 24a, A gap L slightly larger than the height H of the work guide means 12 is provided so that the work guide means 12 can freely pass between the upper and lower tools 23a and 24a.
[0036]
Then, by rotating the upper and lower turrets 23 and 24 synchronously by the turret mechanism 22, electronic components can be mounted on the upper and lower surfaces of the printed circuit board 13 by the upper tool 23a and the lower tool 24a provided on the upper and lower turrets 23 and 24. It has become.
[0037]
Next, the operation of the XY table apparatus configured as described above will be described.
[0038]
In mounting electronic components on both sides of the printed circuit board 13, first, the Y-axis drive means 17 is stopped at the origin position shown in FIG. 15 is inserted into a printed board support member 15b, and a reference pin 15f is inserted from above into a reference hole previously opened in the printed board 13 to position and hold the printed board 13, and the other end side of the printed board 13 Is inserted between the upper and lower bearings 12b of the work guide member 12 adjusted to move according to the width of the printed circuit board 13 and supports the other end of the printed circuit board 13, and then the clamp lever 10a is rotated to clamp the clamping means 10 The guide plate 8 is fixed to the adjustment position by
[0039]
Next, in this state, while the slider 16e is moved in the Y axis direction by the electric slider 16 of the Y axis driving means 17, the Y axis driving means 17 is driven in the X axis direction by the electric slider 16 of the X axis driving means 20 at the same time. First, the printed circuit board 13 is moved as shown in FIG. 5 (b) so that the electronic component mounting position is the electronic component mounting position of the upper turret 23 or the lower turret 24 of the turret mechanism 22, and the upper and lower tools 23a, Electronic components are mounted on the upper and lower surfaces of the printed circuit board 13 by 24a.
[0040]
Hereinafter, while the upper and lower turrets 23 and 24 are intermittently rotated by the turret mechanism 22, the printed circuit board 13 is moved in the X and Y directions, and electronic components are successively mounted on the upper and lower surfaces of the printed circuit board 13 by the upper and lower tools 23a and 24a. Since the work guide means 12 that supports the other end of the printed circuit board 13 passes only between the upper and lower tools 23a and 24a, the printed circuit board 13 can be moved in the XY direction. Even if it is not housed, the XY table and the turret mechanism 22 do not interfere with each other, thereby reducing the size of the XY table and reducing the gap L between the upper and lower tools 23a and 24a provided on the upper and lower turrets 23 and 24. Therefore, the vertical stroke of the lower tool 24a can be reduced, and thereby the lower tool 24a It is possible to shorten the operation time, the productivity is improved.
[0041]
In the present embodiment, a printed circuit board has been described as an example of a workpiece. However, this may be a plate-like workpiece (workpiece), and the processing apparatus is also limited to an electronic component mounting machine. is not.
[0042]
【The invention's effect】
As described in detail above, the present invention performs predetermined processing on both sides of the plate-like workpiece by gripping one end side of the plate-like workpiece and moving the plate-like workpiece in the XY direction. Therefore, it is possible to reduce the size of the XY table that moves the plate-shaped workpiece in the XY direction, and also to reduce the size of the processing device itself by reducing the size of the XY table, thereby reducing the price of the processing device and reducing the installation space. Etc. can be planned.
[0043]
In addition, since it is only necessary to provide a gap between the upper and lower tools of the turret mechanism so that the work guide means supporting the other end of the plate-like workpiece can pass, the vertical stroke of the lower tool can be reduced. Since the operation time of the lower tool can be shortened, productivity can be improved, and the workpiece gripping means includes a base material supporting member that sandwiches one end side of the plate-like workpiece, and a plate-like workpiece. Since the reference pin for positioning is provided and the positioning lever is rotatable in the vertical direction, the plate-like workpiece is inserted into the base material support member, and the reference hole of the plate-like workpiece is inserted. The plate-like workpiece can be attached and positioned with respect to the XY table simply by inserting the reference pin of the positioning lever, so that the plate-like workpiece can be attached and detached efficiently in a short time.
[0044]
Furthermore, since the X-axis driving means and the Y-axis driving means are constituted by electric sliders, the plate-like workpiece can be moved in the XY direction at high speed, so that the machining time for the plate-like workpiece can be shortened. In addition, since the plate-like workpiece can be positioned with high accuracy on the machining apparatus, problems such as machining defects do not occur.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view showing an XY table device according to an embodiment of the present invention.
FIG. 2 is a front view showing an XY table device according to an embodiment of the present invention.
FIG. 3 is a partially cutaway perspective view of an electric slider used in an XY table device according to an embodiment of the present invention.
FIG. 4 is a side view of workpiece gripping means used in the XY table device according to the embodiment of the present invention.
FIGS. 5A and 5B are explanatory views of the operation of the XY table device according to the embodiment of the present invention.
FIG. 6 is a perspective view showing a conventional XY table device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Base 2 X-axis base 3 X-axis LM guide 4 1st slider 5 Slide base 6 Work width adjustment rail 7 2nd slider 8 Guide plate 8a Support member 9 Stopper 10 Clamp means 10a Clamp lever 12 Work guide means 12a Bowl shape Member 13 Printed circuit board (plate-like workpiece)
15 Work gripping means 15a Inserting groove 15b Printed circuit board support member (plate base material support member)
15c Positioning means 15d Rotating shaft 15e Positioning lever 15f Reference pin 15g Reference pin up / down lever 16 Electric slider 16a Case 16b Bearing 16c Ball screw 16d Guide rail 16e Slider 17 Y-axis drive means 18 Bracket 19 Slider plate 19a Support bracket 20 X-axis drive Means 21 Connecting means 21a Connecting bracket 21b Connecting plate 21c Cam follower 21d Long hole 22 Turret mechanism 23 Upper turret 23a Upper tool 24 Lower turret 24a Lower tool

Claims (3)

In an XY table device for moving a plate-like workpiece in the XY-axis direction by an XY table, Y-axis drive for driving the workpiece holding means for holding one end side of the plate-like workpiece in the Y-axis direction. And an X-axis drive means for driving the Y-axis drive means in the X-axis direction orthogonal to the Y-axis, and the other end side of the plate-like workpiece follows the Y-axis drive means. An XY table device for an electronic component mounting machine, characterized in that it is supported by a work guide means that moves in the X-axis direction and supports the other end of the plate-like workpiece so as to be movable in the Y-axis direction. Positioning lever that is provided with a plate base material supporting member for sandwiching one end of the plate-like workpiece printed circuit board as a workpiece gripping means, and a reference pin for positioning the plate-like workpiece, and is rotatable in the vertical direction The XY table device according to claim 1, comprising: The X-axis driving means and the Y-axis driving means are engaged with a ball screw that is rotated in the forward and reverse directions by a drive source composed of a pulse motor, and is moved by being guided by the guide rail as the ball screw rotates. 2. The XY table device according to claim 1, wherein the XY table device is constituted by an electric slider comprising a slider.

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