JP2008047644A - Workpiece rotating apparatus, and workpiece mounting system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a workpiece rotating apparatus and a workpiece mounting system which can quicky and accurately set a workpiece in a desired attitude with a simple arrangement. <P>SOLUTION: A workpiece rotating apparatus 70 comprises, as its main components, first and second pinch-holding mechanisms 72A and 72B, first and second rotating mechanisms 73A and 73B, first and second guide means 74A and 74B, a stopper mechanism 75, a frame block 76, and a drive mechanism 77. A workpiece mounting system comprises a transportation device, a workpice supply device, a first position adjusting device, a polarity detecting device, a defective discharging device, a workpiece rotating device 70, a visual inspection device, a second position adjusting device, and workpice storage table. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a workpiece rotating device and a workpiece mounting system used when changing the direction of various small electronic components by rotating them to a predetermined angle.

  Generally, when various small electronic components (workpieces) such as an IC chip, a resistance element, a capacitor element, a coil element, and a light emitting diode are mounted on a circuit board or the like, the work is held in a predetermined posture and supplied to a mounting apparatus. Therefore, a mounting base material such as a mounting tape for holding the work on the tape is used. On the mounting tape, the work is arranged with a desired posture and a predetermined angle in accordance with the characteristics of the work, the mounting position on the mounting device, the use, and the like.

  As this mounting tape, for example, a light-emitting diode mounting tape in which a light-emitting diode (work) covered with a cap is arranged on the surface of the mounting tape at a predetermined angle is known. This light emitting diode mounting tape, in particular, requires that the light emitting diodes be mounted with the correct polarity, so that the light emitting diodes are required to be aligned more accurately in a desired posture. .

As an apparatus for aligning such a workpiece in a predetermined posture, an apparatus is known in which after the front and back of an IC chip (work) is discriminated, the IC chips are aligned on either the front or back and arranged on a mounting tape ( Patent Document 1, Patent Document 2 and Patent Document 3). In addition to electronic components, there are cases where alignment of articles is required in various industrial fields. When aligning, not only the front and back rotation but also the packaging posture of the article such as 30 degrees and 60 degrees may be required.
JP 2001-196441 A (paragraph numbers [0102] to [0106], FIG. 10, FIG. 21, FIG. 22) JP 2000-150209 A (Claim 1) JP-A-11-255325 (Claim 1)

  However, since the conventional apparatus reverses the workpiece in either the front or back direction, it has been difficult to freely set the rotation angle of the workpiece. In addition, since the apparatus is installed along a conveyance path for conveying a small workpiece, it is difficult to perform a precise operation with a simple configuration.

  The present invention has been developed to solve the above-described problems, and an object thereof is to provide a workpiece rotating device and a workpiece mounting system capable of quickly and accurately placing a workpiece in a desired posture with a simple configuration. And

  In order to solve the above-mentioned problem, the work rotation device of the present invention is a work rotation device that rotates the work by a predetermined angle in order to place the work in a preset orientation at the mounting position of the tape-like mounting base material. A first holding mechanism and a second holding mechanism for holding the work by linearly moving the work holding means for sucking and holding the work toward and away from both sides of the work when the work is transferred to a preset setting position. A clamping mechanism and a first rotation mechanism provided in each of the first clamping mechanism and the second clamping mechanism and rotating the first clamping mechanism and the second clamping mechanism at a predetermined angle around the linear movement axis. And a second rotating mechanism, a support body that supports the first clamping mechanism and the second clamping mechanism, and the support body is moved from a preset ascending end to a descending end. A driving mechanism; and a first guide unit and a second guide unit that are installed to face the first rotating mechanism and the second rotating mechanism that are moved by the driving mechanism and guide from the rising end to the descending end. When the first rotating mechanism and the second rotating mechanism move along the first guide means and the second guide means, the ascending end to the descending end or the ascending end from the descending end. In either one of the reciprocating motions to the end, the first clamping mechanism and the second clamping mechanism are rotated to a set angle.

  In the workpiece rotating device configured as described above, when the workpiece is conveyed to a predetermined position, the first clamping mechanism and the second clamping mechanism linearly move from both sides to clamp the workpiece, and the first clamping mechanism and The second clamping mechanism is moved from the descending end to the ascending end by moving the second clamping mechanism through the support to the descending end. When the workpiece rotating device performs this reciprocating movement, the first rotating mechanism moves along the first guide means, and the second rotating mechanism moves along the second guide means, so that the first rotating mechanism And the second rotating mechanism synchronize to rotate the workpiece to a predetermined angle.

  In the work rotating apparatus according to the present invention, the first clamping mechanism and the second clamping mechanism may include a shaft portion provided via an elastic member that urges the first clamping mechanism and the second clamping mechanism toward each other, and the shaft portion moves in a linear direction. A shaft housing provided via a spline as possible, a tip holding portion provided at the tip of the shaft portion protruding from the shaft housing toward the workpiece, and abutting and holding the workpiece, and the tip holding portion A first rotation mechanism and a second rotation mechanism for holding the shaft housing and rotating in one direction and not rotating in the other direction. A direction rotating mechanism and a one-way rotating mechanism for the shaft or a toothed pulley provided in the shaft housing, and the first guide means and the second guide means are provided with one and the other rotating shafts, respectively. , To one of the pivots A guide one-way rotation mechanism that rotates in one direction and does not rotate in the other direction; a pulley provided on the other of the rotation shaft; the one-way rotation mechanism for guide; and the toothed pulley that spans the pulley; A toothed belt that meshes with each other, until the workpiece is delivered from the workpiece holding means to the first clamping mechanism and the second clamping mechanism, and after the workpiece has been delivered to the workpiece holding means. A stopper mechanism that restricts movement of the clamping mechanism and the second clamping mechanism in the linear direction is provided on the support.

  When the first rotating mechanism and the second rotating mechanism move in the downward direction as the support moves, the workpiece rotating device configured as described above is a one-way rotating mechanism for guiding the first guide means and the second guide means. Thus, the toothed belt is rotated in the idle state, and the both clamping mechanisms for clamping the workpiece with the toothed pulley not rotating by the one-way rotating mechanism for the shaft of the first clamping mechanism and the second clamping mechanism are lowered. To move. Next, when the workpiece rotating device moves in the direction of rising with the movement of the support, the toothed belt cannot be rotated by the guide one-way rotating mechanism of the first guide means and the second guide means. In addition, the unidirectional rotation mechanisms for the shafts of the first rotation mechanism and the second rotation mechanism are idled, and the shaft housings of both clamping mechanisms are rotated by a predetermined angle in accordance with the rotation of the toothed pulley. The workpiece held by the tip clamping portion is rotated by a predetermined angle. Note that the workpiece rotating device is in a state of being separated from the workpiece when the both clamping mechanisms are at the rising end by the stopper mechanism.

  Further, in the work rotating device according to the present invention, the stopper mechanism includes a contact arm that contacts the flange, a horizontal arm provided with a predetermined angle at one end of the contact arm, and the other end side of the horizontal arm. And a stopper support shaft pivotally supported on the support body, the support body supporting the first clamping mechanism and the second clamping mechanism at the same height position. And a central block provided between the first block and the second block and having a communication groove in the center. The communication groove has a large groove portion having a large groove width at a predetermined position in the communication direction. The drive mechanism includes a drive motor, a crank that converts rotation of the drive motor into a linear motion, and a center shaft that moves the support up and down by the crank. The front end of the shaft is disposed at a position where the tip end pushes the horizontal arm of the stopper mechanism at the rising end, and is communicated along the communication groove of the support body. A position having an abutting pressing portion formed so as to be fitted, and a block elastic member for always urging the central block upward, between the center shaft and the central block, and pushing the horizontal arm In addition, a configuration is provided that includes a restricting portion that restricts the rising end position of the support so that the center shaft protrudes from the center block against the block elastic member.

  In the workpiece rotating device configured as described above, the center shaft moves in the direction of descending in the large groove portion, so that the horizontal arm of the stopper mechanism that has been pushed at the tip of the center shaft is released, and the flange of the clamping portion is moved. The restriction by the contact arm that has been restricted is released. For this reason, the shaft portion of both clamping mechanisms is urged by the elastic member, so that the tip clamping portion clamps the workpiece from both sides of the workpiece. In addition, when the center shaft is moved in the lower end direction by the drive mechanism, the workpiece rotating device is attached to the block elastic member from the state of loosely fitting in the large groove portion of the central block of the support until it comes into contact with one surface of the large groove portion. The center shaft moves against this, the abutment pressing portion comes into contact with one surface of the large groove portion, and the center shaft is further lowered to move the support to the descending end. Further, the work rotating device moves the support body to the rising end by moving the center shaft in the rising direction. At this time, the positional relationship between the contact pressing portion of the center shaft and the large groove portion of the center block is maintained by the block elastic member. When the support comes into contact with the restricting portion at the rising end, the center shaft is lifted against the elastic force of the block elastic member within a range in which the contact pressing portion of the center shaft can move within the large groove portion. The front end of the holding mechanism is brought into contact with the horizontal arm of the stopper mechanism, and the contact arm is moved against the elastic member in the direction of separating the flanges of the both clamping mechanisms.

  A workpiece mounting system according to the present invention includes a workpiece rotation device according to any one of claims 1 to 3, a workpiece supply device that transports and supplies a workpiece to the workpiece rotation device, and the workpiece rotation device. And a work storage device for storing the work rotated in a predetermined posture in the mounting base material.

  In this workpiece mounting system, the workpiece rotating device of the present invention rotates the workpiece supplied by the workpiece supply device to a predetermined angle, and the rotated workpiece is supplied to the mounting substrate by the workpiece storage device. It is possible to align the workpieces quickly and accurately by arranging them in a predetermined posture at the mounting position.

  According to the workpiece rotating device of the present invention, the workpiece can be quickly and accurately rotated at a predetermined angle to have a desired posture. Therefore, it becomes possible to arrange | position a workpiece | work in the mounting position of the base material for mounting with a desired attitude | position. In addition, the workpiece rotating device can arbitrarily control the posture, orientation angle, and the like at the time of mounting the workpiece with a relatively simple configuration with few drive sources.

  In addition, according to the workpiece mounting system of the present invention, it is possible to mount the workpiece on the mounting substrate in a desired posture quickly and accurately.

  Next, a work rotation device of the present invention and a work mounting system including the work rotation device will be described in detail with reference to the drawings as appropriate. In the drawings to be referred to, FIG. 1 is a plan view schematically showing a configuration example of a work mounting system according to the present invention.

  A workpiece mounting system 1 shown in FIG. 1 includes a transfer device 20, a workpiece supply device 30, a first position adjustment device 40, a polarity detection device 50, a defective product discharge device 60, a workpiece rotation device 70, and an appearance inspection. The apparatus 80, the 2nd position adjustment apparatus 90, and the workpiece | work storage table 100 are provided. In the workpiece mounting system 1, each device is arranged on the circumference so as to surround the conveyance table 21 of the conveyance device 20 that is rotationally driven in the direction of arrow A, and conveys a workpiece mounting tape (mounting base material) T. The base 21 is arranged so as to cross the arc.

  The transport device 20 is for transporting the workpiece W (see FIG. 2) to each device of the workpiece mounting system 1, and includes a transport base 21 formed in a disk shape and a work provided on the transport base 21. And holding means 22.

The carriage 21 has a substantially disk shape, and a shaft extending from a driving device (not shown) is connected to the center portion so as to be rotatable.
Moreover, the intermittent rotation operation | movement of the conveyance stand 21 is controlled by the control apparatus which is not shown in figure.

  The workpiece holding means 22 holds the workpiece W (see FIG. 2), and is provided on the periphery of the transport table 21 with an appropriate interval along the circumferential direction thereof. The work holding means 22 has, for example, a work suction part 22A (see FIG. 2) that sucks the work W at the tip, and the work suction part 22A sucks and holds the surface of the work W. The work holding means 22 has a moving mechanism (not shown) so that the work can be moved downward when the work W is mounted on the mounting base T described later.

  Moreover, the structure which has the mechanism (not shown) which rotates the workpiece | work W in the horizontal direction may be sufficient as the workpiece | work holding means 22 in the state which adsorb | sucked the workpiece | work W. By rotating the workpiece W in the horizontal direction, it is possible to change the orientation of the workpiece W detected by the polarity detection device 50 described later as having a polarity opposite to the desired orientation.

  The workpiece supply device 30 aligns the workpieces W one by one and supplies the workpieces W to the transport table 21, and randomly aligns the workpieces W that are overlapped one by one and supplies them to the workpiece holding means 22.

The first position adjusting device 40 corrects the displacement of the position of the workpiece W in order to use the workpiece W for the polarity detection device 50 described later. For example, each position is adjusted so that the workpiece W can be positioned with respect to the center of the workpiece W by sandwiching the end surface of the workpiece W from the front, rear, left and right directions and applying the same pressing force.

  The polarity detection device 50 supplies current to the workpiece W to detect the polarity and the operation state, and controls the operation timing of the defective product discharge device 60 and the workpiece rotation device 70 described later based on the detection result. Thus, it has a current supply device and a control device (not shown).

  When the polarity detection device 50 determines in the control device (not shown) that the workpiece W needs to be rotated based on the detection result of the current direction or the like, information on the target workpiece W is sent to the workpiece rotation device 70 described later. When it is determined that there is a malfunction in the workpiece W, information on the workpiece W as a target is transmitted to a defective product discharge device 60 described later.

The defective product discharge device 60 discharges a work W (defective product) having an operation failure to the outside of the work mounting system 1. This defective product discharge device, for example, collects unillustrated by sucking the workpiece W released from the holding of the workpiece holding means 22 when it is determined that there is a malfunction based on the signal from the polarity detection device 50. Recover to mechanism.

The appearance inspection device 80 inspects whether or not the workpiece W rotated to a desired posture by the workpiece rotation device 70 described later has a predetermined appearance. The appearance inspection apparatus 80, for example, captures the workpiece W, compares the captured image with a preliminarily stored outline of the reference workpiece W, and determines whether the workpiece is within an allowable range. W inspection is performed.
In addition, the workpiece | work W judged that the external appearance inspection apparatus 80 does not satisfy | fill a predetermined standard is discharged | emitted from the discharge mechanism which is not shown in figure.

The mounting base T is for supplying the workpiece W to a mounting device (not shown). For example, a long strip-like tape is wound around a reel and used.

The mounting base T is formed with a plurality of storage holes T1 for storing the workpiece W on the surface, and sequentially stores the workpieces W satisfying a predetermined standard in the storage hole while proceeding in the longitudinal direction.
The mounting substrate T is sent out by a fixed amount from a delivery reel (not shown), and the delivery timing is controlled by a control device (not shown).

The workpiece storage table 100 is used when the workpiece W is stored in the mounting substrate T. This work storage table 100 has positioning means (not shown) when the work holding means 22A is moved by the moving means (not shown) toward the storage hole T1 of the mounting base T in the direction in which the work is stored. is doing.

  Next, the workpiece | work rotation apparatus 70 which concerns on this invention is demonstrated with reference to FIG. 2 and FIG. 2 is a front view showing a part of the workpiece rotating device in a cutaway state, FIG. 3 is a side view of the workpiece rotating device, and FIG. 4A is a partial cross-sectional view of a configuration of a workpiece holding position in the workpiece rotating device. FIG.

  As shown in FIGS. 2 and 3, the work rotation device 70 is supported by a frame casing 71, and includes a first clamping mechanism 72A and a second clamping mechanism 72B, and a first rotation mechanism 73A and a second rotation mechanism 73B. The first guide means 74A and the second guide means 74B, a stopper mechanism 75, a frame block 76, and a drive mechanism 77 are mainly provided.

  As shown in FIG. 2 and FIG. 3, the frame casing 71 supports each component such as the first clamping mechanism 72A and the second clamping mechanism 72B, and the frame pillar 71a is arranged in parallel at predetermined intervals on the left and right. 71a, an upper frame 71b formed by bending in the horizontal direction on the upper side of the frame pillars 71a, 71a, and a regulating portion 77k to be described later, and a first guide means at a middle position of the frame pillars 71a, 71a Connection frames 71c and 71c connected to provide 74A and second guide means 74B are provided. The frame casing 71 is formed in a predetermined shape by being bent by a metal frame, or by welding or screwing. The connection frames 71c and 71c are formed in an L shape so that the first guide means 74A is disposed at a position facing the first toothed pulley 73a of the first clamping mechanism 72A, and the second guide The means 74B is formed in an L shape so as to be disposed at a position facing the second toothed pulley 73c of the second clamping mechanism 72B. Here, the toothed belts 74e and 74e are provided with teeth on the surface side of the belt.

As shown in FIG. 4, the first clamping mechanism 72A and the second clamping mechanism 72B are for clamping the workpiece W, and include a shaft portion 72a, an elastic member 72b, a shaft housing 72c, and a spline 72d. The front end holding portion 72e and the flange 72f are provided.
Shaft portion 72a is arranged in a state of being divided into the front shaft portion 72a ₁ and the rear shaft section 72a ₂ via the elastic member 72b in the axial groove in the Jikukatamitai 72c. The shaft portion 72a is provided such that the rear shaft portion is fixed to the shaft housing 72c, and the front shaft portion is slidable in the linear direction by the groove in the shaft housing 72c and the spline 72d.

The shaft portion 72a, as the front shaft portion 72a ₁ is always biased toward the workpiece W side, is provided via a coil spring which is an elastic member 72b. The coil spring as an elastic member 72b is engaged with both end portions to the rear end of the tip and the front shaft portion 72a ₁ of the side shaft portion 72a ₂ after the shaft portion 72a, the front shaft portion 72a ₁ in advance It is installed so as not to protrude from the shaft housing 72c beyond the setting. Further, the front shaft portion 72a ₁ of the shaft portion 72a is provided slidably in a linear direction inside the Jikukatamitai 72c via a spline 72d. The splines 72d, for example, a ball spline is used using the ball as long as the front shaft portion 72a ₁ of the shaft portion 72a can be moved slidably in a linear direction.

Then, the front shaft portion 72a ₁ of the shaft portion 72a has a tip clamping portion 72e is provided via the flange 72f. The tip clamping portion 72e is made of a material such as resin, metal, or rubber in order to contact the workpiece W and clamp the workpiece W. Further, the flange 72f that supports the tip clamping portion 72e is attached to the shaft portion 72a, and is installed so as to be in contact with and separated from the tip of the shaft housing 72c. The flange 72f is installed so that a contact arm 75a of a stopper mechanism 75 described later contacts the flange portion. A shaft housing 72c of the first clamping mechanism 72A is rotatably provided on a first block 76a of a frame block 76 described later via a first rotation mechanism 73A, and the shaft housing of the second clamping mechanism 72B. 72c is rotatably provided on the second block 76b via the second rotation mechanism 73B.

  As shown in FIGS. 2 and 4, the first rotating mechanism 73A and the second rotating mechanism 73B are provided on the frame block 76 to support the first holding mechanism 72A and the second holding mechanism 72B, respectively. This is for rotating the workpiece W held by the holding mechanism 72A and the second holding mechanism 72B to a predetermined angle. The first rotation mechanism 73A includes a first toothed pulley 73a and a one-way clutch 73b that is a one-way rotation mechanism for a shaft. The second rotation mechanism 73B includes a second toothed pulley 73c and a one-way clutch 73d that is a one-way rotation mechanism for shafts.

The first toothed pulley 73a of the first rotation mechanism 73A is provided on the rear side of the shaft housing 72c of the first clamping mechanism 72A, and rotates to rotate the shaft housing 72c and the shaft portion 72a. Is provided. The one-way clutch 73b of the first rotation mechanism 73A is provided in the shaft housing 72c at a position adjacent to the first toothed pulley 73a. The one-way clutch 73b is supported by the first block 76a.
The second toothed pulley 73c of the second rotating mechanism 73B is provided on the rear side of the shaft housing 72c of the second clamping mechanism 72B, and the shaft housing 72c and the second toothed pulley 73c are rotated by the rotation. The shaft portion 72a is provided to rotate. The one-way clutch 73d of the second rotation mechanism 73B is provided on the shaft housing 72c at a position adjacent to the second toothed pulley 73c. The one-way clutch 73d is supported by the second block 76b.

  The one-way clutches 73b and 73d are configured so as to rotate the shaft housing 72c supported by the clutch being disengaged when rotating in one direction, and to prevent the shaft housing 72c supported by the clutch being engaged when rotating in the other direction. To work. These one-way clutches 73b and 73d have a general configuration. For example, the outer ring and the inner ring, balls (rollers) and springs arranged between the outer ring and the inner ring, and the ball locked to the outer ring or the inner ring ( A clutch portion for clutching) and an unlocking portion for releasing the lock. Then, the rotation of the outer ring or the inner ring is stopped by engaging the ball with the clutch part of the outer ring or the inner ring, and the outer ring or the inner ring can be rotated by releasing the engagement of the ball from the clutch part.

As shown in FIGS. 2 to 3, first guide means 74A and second guide means 74B are installed at positions facing the first toothed pulley 73a and the second toothed pulley 73c. The first guide means 74A and the second guide means 74B include guide turning shafts (turning shafts) 74a and 74b that are spaced apart from each other, and one and the other of the guide turning shafts 74a and 74b. The guide one-way clutch 74c and the pulley 74d, and the toothed belt 74e, which is an endless belt, is provided around the guide one-way clutch 74c and the pulley 74d. The first guide means 74A is positioned so that the first toothed pulley 73a and the second toothed pulley 73c can be engaged with the respective toothed belts 74e and 74e of the first guide means 74A and the second guide means 74B. And the 2nd guide means 74B is installed.
The guide one-way clutches 74c and 74c are installed such that the direction of clutching is opposite to the one-way clutches 73b and 73d of the first rotation mechanism 73A and the second rotation mechanism 73B.

  As shown in FIG. 4, the stopper mechanism 75 contacts the flanges 72f and 72f of the first clamping mechanism 72A and the second clamping mechanism 72B and resists the elastic members 72b and 72b, so that the tip clamping parts 72e and 72e are separated from each other. It regulates to do. The stopper mechanism 75 includes contact arms 75a and 75a that contact the flanges 72f and 72f of the first holding mechanism 72A and the second holding mechanism 72B, and a horizontal arm that continues from the contact arms 75a and 75a at a predetermined angle. 75b, 75b and stopper support shafts 75c, 75c for supporting the horizontal arms 75b, 75b. The stopper support shafts 75 c and 75 c of the stopper mechanism 75 are attached to positions that are located on the left and right sides of the center block 76 c of the frame block 76.

The abutting arm 75a is formed in a U shape or a V shape having a bifurcated tip, and is formed so as to abut on the flange portion across the protruding portion at the center of the flange 72f. The abutting arm 75a is formed such that a portion that abuts on the flange 72f protrudes in an arc shape from the arm portion toward the flange 72f.
Here, the horizontal arm 75b is formed integrally with the contact arm 75a so as to be perpendicular to the contact arm 75a. The horizontal arms 75b and 75b are disposed at positions to be pushed by a tip 77e of a center shaft 77c described later.

  When the horizontal arm 75b, 75b is pressed from below by the tip 77e of the center shaft 77c, the stopper mechanism 75 rotates at a predetermined angle with the stopper support shafts 75c, 75c as fulcrums, and comes into contact with the stopper mechanism 75. The arms 75a and 75a come into contact with the flanges 72f and 72f of the first clamping mechanism 72A and the second clamping mechanism 72B, and the tip clamping parts 72e and 72e are separated from the workpiece W.

Further, the stopper mechanism 75 rotates at a predetermined angle with the stopper support shafts 75c and 75c as fulcrums when the horizontal arms 75b and 75b are not pressed from below by the tip 77e of the center shaft 77c. The arms 75a and 75a are positioned away from the flanges 72f and 72f of the first clamping mechanism 72A and the second clamping mechanism 72B. Therefore, when the stopper mechanism 75 is released, the first clamping mechanism 72A and the second clamping mechanism 72B have the front shaft portions 72a ₁ and 72a ₁ of the shaft portions 72a and 72a by the elastic force of the elastic members 72b and 72b. Projecting from the shaft housings 72c and 72c to the workpiece W side via the splines 72d and 72d, and leading end holding portions 72e provided on the front end portions of the front side shaft portions 72a ₁ and 72a ₁ via flanges 72f and 72f, The workpiece W is clamped from both sides by 72e.

  The frame block 76 on which the stopper mechanism 75 is supported includes a first block 76a and a second block 76b that support the outer peripheral portions of the one-way clutch 73b of the first rotation mechanism 73A and the one-way clutch 73d of the second rotation mechanism 73B. A central block 76c provided between the first block 76a and the second block 76b. The frame housing 71 is provided with a block slide mechanism 76f so that it can be moved up and down within a range set by a drive mechanism described later. Is provided. The center block 76c has a communication groove 76d in which a center shaft 77c, which will be described later, communicates in the vertical direction, and a groove large portion 76e that is formed at a predetermined position of the communication groove 76d and that accommodates the contact pressing portion 77d of the center shaft 77c. And form.

As shown in FIG. 3, the drive mechanism 77 includes a drive motor 77a, a crank 77b, a center shaft 77c, a shaft elastic member 77f, a slide mechanism 77g, a cam 77h, and a pin 77i.
The drive motor 77a is a servo motor capable of controlling the rotation speed. The drive motor 77 a is installed between both frame pillars of the frame casing 71.
The crank 77b, the cam 77h, and the pin 77i are for converting the rotation of the drive motor 77a into a linear motion. Here, the center shaft 77c is configured to move up and down (up and down) within a preset range. ing.

  Here, as shown in FIG. 2, the crank 77b is provided at a position eccentric with respect to the drive shaft of the drive motor 77a in the cam 77h having a long hole in the center as an engagement portion with the center shaft 77c. It is installed in a state of being engaged with the center shaft 77c via the pin 77i. The regulation control plate is rotated 90 degrees by the drive motor 77a, and the center shaft 77c can be moved within the range of the long hole in which the pin 77i can be moved by moving the center shaft 77c in the upward or downward direction. It is configured.

  As shown in FIG. 4, the center shaft 77c has a tip end portion 77e (upper end) formed flat, has a contact pressing portion 77d having a shape corresponding to the large groove portion 76e of the center block, and a pin 77i on the cam 77h. And is slidably supported on the frame casing 71 by a slide mechanism 77g such as a linear guide. The center shaft 77c is formed in such a size that the contact pressing portion 77d can be loosely fitted in the large groove portion 76e of the central block 76c. A restricting portion 77k is provided in the center of the upper frame 71b (see FIG. 3) to restrict the movement by contacting the upper surface of the center block 76c when it reaches the rising end of the center shaft 77c. In the drawing, the restricting portion 77k is virtually indicated by a dotted line at a position shifted from the center of the center shaft 77c, but is preferably a position that contacts the center in the width direction of the center block 76c.

When the center shaft 77c is at the rising end, the tip 77e abuts against the horizontal arms 75b and 75b of the stopper mechanism 75, and the stopper mechanism 75 holds the workpiece W by the first holding mechanism 72A and the second holding mechanism 72B. To regulate. At this time, the contact pressing portion 77d, the lower surface 77d ₁ is a non-contact state relative to the lower top surface 77e ₁ of the groove most 76e. Further, in the case of moving the center shaft 77c from rising edge to falling edge to release the restriction of the stopper mechanism 75, the contact pressing portion 77d, the lower surface 77d ₁ is the lower top surface 77e ₁ of the groove most 76e It will be in the contact state.

Therefore, when the center shaft 77c moves downward, as shown in FIG. 6, the frame block 76 is lowered by pressing the center block 76c downward by the contact pressing portion 77d. Further, when the raising movement of the center shaft 77c from falling end, the positional relationship between the groove voluminous 76e and the abutment pressing portion 77d of the central block 76c may have a lower surface 77d ₁ of the abutting pressing portion 77d, groove majority 76e and it has a contact state of the lower top surface 77e _1. That is, when the center block 76c is separated from the restricting portion 77k, the center block 76c is always pulled downward by the biasing force of the shaft elastic member 77f provided between the center shaft 77c and the center block 76c. Is in a state. Therefore, the rising end of the central block 76c is a position where it comes into contact with the restricting portion 77k, and the rising end of the center shaft 77c is attached to the shaft elastic member 77f from the position of the central block 76c that comes into contact with the restricting portion 77k. The tip 77e protrudes from the upper surface of the central block 76c against the force and is in contact with the horizontal arm 75b of the stopper mechanism 75.

  Furthermore, when the frame block 76 moves due to the movement of the center shaft 77c, the first rotation mechanism 73A and the second rotation mechanism 73B also move simultaneously. When the first rotating mechanism 73A and the second rotating mechanism 73B move in the direction of descending from the rising end, the first toothed pulley 73a meshes with the toothed belts 74e and 74e of the first guide means 74A, and In a state where the two-tooth pulley 73c is engaged with the toothed belt 74e of the second guide means 74B, the pulley moves to the lower end (see FIG. 7).

  When moving to the lower end, the first rotating mechanism 73A and the second rotating mechanism 73B are rotated by the one-way clutches 73b and 73d to rotate the shaft housings 72c and 72c of the first holding mechanism 72A and the second holding mechanism 72B. There will be no situation. At this time, the guide one-way clutches 74c and 74c of the first guide means 74A and the second guide means 74B idle without being clutched, so that the toothed belts 74e and 74e idle. Therefore, the first toothed pulley 73a and the second toothed pulley 73c rotate the toothed belts 74e and 74e idle without rotating in a state of being engaged with the toothed belts 74e and 74e.

  Further, when moving so as to rise from the descending end, the one-way clutches 73b and 73d of the first rotation mechanism 73A and the second rotation mechanism 73B are idled, so that the first toothed pulley 73a and the second toothed pulley 73c are the first ones. The shaft housings 72c and 72c of the first clamping mechanism 72A and the second clamping mechanism 72B are rotated at a predetermined angle. At this time, the toothed belts 74e and 74e of the first guide means 74A and the second guide means 74B meshing with the first toothed pulley 73a and the second toothed pulley 73c are the guide one-way clutches 74c and 74c. Therefore, it is in a fixed state.

A series of operations of the workpiece rotating device 70 configured as described above will be described with reference to FIGS. In addition, about a structure, refer FIG. 2 thru | or FIG. 4 suitably.
FIGS. 5A and 5B are operation explanatory views in the workpiece rotating device, and FIG. 5A is a side view showing a state where the first clamping mechanism and the second clamping mechanism are located at the rising end. b) is a side view showing a state in which the first clamping mechanism and the second clamping mechanism are positioned at the descending end. FIGS. 6A to 6C are operation explanatory views showing, in partial cross section, the operation of clamping the workpiece by the first clamping mechanism and the second clamping mechanism in the workpiece rotating device, and FIG. 6A is a stopper mechanism. , A schematic diagram showing a state where the first clamping mechanism and the second clamping mechanism are separated from each other, (b) is a schematic diagram showing a state where the stopper mechanism is released, and (c) is a state where it is lowered by the center shaft. It is a schematic diagram shown. Further, FIG. 7 is an operation explanatory view schematically showing a state in which the first rotating mechanism and the second rotating mechanism move along the first guide means and the second guide means in the work rotating device, The side view and perspective view showing the state of both rotation mechanisms and both guide means at the workpiece clamping position, (b) is a side view and perspective view showing the state of moving to the lowering end, (c) is the rising end from the lowering end It is the side view and perspective view which show the state which moves toward

  As shown in FIGS. 5 (a) and 6 (a), when the workpiece holding means 22 moves and holds and sends the workpiece W to the workpiece rotating device 70, the presence of the workpiece W is detected by a sensor or the like (not shown). Is detected by the work rotation device 70. Then, the workpiece rotating device 70 converts the rotational motion of the drive motor 77a into a reciprocating motion by the crank 77b, the cam 77h, etc., and moves the center shaft 77c in the descending direction. This reciprocating motion can be replaced with an actuator such as an air cylinder.

At this time, as shown in FIGS. 6A and 6B, when the center shaft 77c starts to move in the descending direction, the large groove portion 76e of the center block 76c resists the elastic force of the shaft elastic member 77f. By descending in the space, the tip 77e of the center shaft 77c is separated from the horizontal arms 75b and 75b of the stopper mechanism 75. Therefore, in the first clamping mechanism 72A and the second clamping mechanism 72B, the shaft portions 72a, 72a are urged toward the workpiece W by the elastic members 72b, 72b. In the first clamping mechanism 72A and the second clamping mechanism 72B, the front shaft portions 72a ₁ and 72a _{1 of the} shaft portions 72a and 72a move in the linear direction via the splines 72d and 72d, and the tip clamping portions 72e and 72e. The workpiece W is clamped by

As shown in FIG. 6 (c), further, the center shaft 77c is moved in the lowering direction, the lower surface 77d ₁ of the contact pressing portion 77d of the center shaft 77c, pushes the lower top surface 76e ₁ of the groove most 76e As a result, the frame block 76 is moved together with the center shaft 77c in the downward direction.

  As the frame block 76 moves, the first clamping mechanism 72A and the first rotation mechanism 73A, and the second clamping mechanism 72B and the second rotation mechanism 73B move together with the frame block 76 in the downward direction. The first toothed pulley 73a of the first rotating mechanism 73A and the second toothed pulley 73c of the second rotating mechanism 73B are, as shown in FIG. 7B, the first guide means 74A and the second guide means 74B. Descends along the toothed belts 74e, 74e.

  At this time, the one-way clutches 73b and 73d of the first rotation mechanism 73A and the second rotation mechanism 73B are in a state in which the clutch is engaged, and the first guide means 74A and the second guide means 74B are the respective guides. The one-way clutches 74c and 74c make the toothed belts 74e and 74e idle. Therefore, when the first toothed pulley 73a and the second toothed pulley 73c mesh with the toothed belts 74e and 74e and move toward the descending end, the first toothed pulley 73a and the second toothed pulley 73c are not rotated. Only the toothed belts 74e and 74e of the guide means 74B are rotated so as to run idle.

  Therefore, the first clamping mechanism 72A and the second clamping mechanism 72B move from the rising end to the falling end without changing the posture of the workpiece W held by the first rotating mechanism 73A and the second rotating mechanism 73B not rotating. To do. When the center shaft 77c reaches the descending end, the drive mechanism 77 moves the center shaft 77c toward the ascending end by the crank 77b.

  As shown in FIG. 7C, when the center shaft 77c moves from the descending end toward the ascending end, the frame block 76 similarly moves as the center shaft 77c moves. At this time, the first toothed pulley 73a of the first rotating mechanism 73A and the second toothed pulley 73c of the second rotating mechanism 73B are respectively connected to the toothed belts 74e and 74e of the first guide means 74A and the second guide means 74B. When a force is applied in the rotational direction in the engaged state, the one-way clutches 74c and 74c for guiding are clutched to prevent the toothed belts 74e and 74e from rotating and the first rotating mechanism 73A and the second rotating mechanism. The clutches of the 73B one-way clutches 73b and 73d are released.

  For this reason, the first clamping mechanism 72A and the second clamping mechanism 72B rotate the shaft W 72c, 72c to a predetermined angle (here, 180 degrees) in accordance with the moving distance in the upward direction. It is reversed every time. The movement of the frame block 76 is restricted by the restricting portion 77k so that the work block W becomes the rising end of the first clamping mechanism 72A and the second clamping mechanism 72B at a position where the workpiece W is inverted by 180 degrees. Therefore, the upward movement is stopped before the center shaft 77c.

  When the frame block 76 is regulated and stopped by the regulating portion 77k, the center shaft 77c has a contact pressing portion 77d that resists the elastic force of the shaft elastic member within a range in which the center shaft 77c is loosely fitted in the large groove portion 76e of the central block 76c. And move further in the upward direction. Therefore, the tip 77e of the center shaft 77c protrudes from the upper end surface of the center block 76c and pushes the horizontal arms 75b and 75b of the stopper mechanism 75.

Therefore, the stopper mechanism 75 moves the flanges 72f and 72f of the first clamping mechanism 72A and the second clamping mechanism 72B in a direction to separate them against the elastic force of the elastic members 72b and 72b. Release the workpiece W. Since the workpiece suction portion 22A of the workpiece holding means 22 is already waiting at the rising end position of the workpiece W, the first clamping is performed before the tip portion 77e of the center shaft 77c pushes the stopper mechanism 75. The workpiece W clamped by the mechanism 72A and the second clamping mechanism 72B is sucked, and the workpiece is received at the same time when the clamping of the workpiece W by the first clamping mechanism 72A and the second clamping mechanism 72B is released by the stopper mechanism 75.
The first clamping mechanism 72A and the second clamping mechanism 72B stand by in a state of being separated by the stopper mechanism 75 until the next workpiece W flows.

  It should be noted that by controlling the number of rotations of the drive motor 77a and the like, the range of ascending and descending of the first rotating mechanism 73A and the second rotating mechanism 73B (see FIG. 3A) is controlled, and the first clamping mechanism 72A. It is also possible to rotate the rotation angle of the second clamping mechanism 72B (see FIG. 3A) to an arbitrary angle such as 30 degrees, 60 degrees, and 90 degrees.

  Next, operation | movement of the workpiece | work mounting system 1 provided with the workpiece | work rotation apparatus 70 comprised in this way is demonstrated. Since the operation of the work rotation device 70 of the work mounting system 1 is as described above, the description thereof is omitted here.

  The workpieces W are aligned in a line by the workpiece supply device 30, then sent to the conveyance table 21 of the conveyance device 20 and sucked and held by the workpiece holding means 22. The conveyance device 20 moves the workpiece W to the first position adjustment device 40. Then, while the work W is attracted and held by the work holding means 22, the first position adjusting device 40 adjusts the position by sandwiching the work W from the front, rear, left and right directions and applying the same pressing force.

Next, the conveyance device 20 moves the workpiece W whose position has been adjusted to the polarity detection device 50. Then, an electrode is brought into contact with the workpiece W from the polarity detection device 50 to pass a current, and the polarity and operating state of the workpiece W are detected. If it is determined that the workpiece W needs to be rotated based on the detection result, the control device (not shown) of the polarity detection device 50 transmits information on the workpiece W to be rotated to the workpiece rotation device 70, and the workpiece When there is a defect in the operating state of W, information regarding the workpiece W to be discharged to the defective article discharge device 60 is transmitted.

When the workpiece W stops at the position of the defective product discharge device 60, the suction of the workpiece W by the workpiece holding means 22 is stopped, the workpiece W is dropped, and the dropped workpiece W is caught by the defective product discharge device 60, Discharge out of the lane of the work mounting system 1.
When the workpiece W stops at the position of the workpiece rotating device 70, the workpiece rotating device 70 rotates the workpiece W by, for example, 180 degrees and then delivers it to the workpiece holding means 22.

Next, the transport device 20 moves the workpiece W to the position of the appearance inspection device 80. Then, the appearance inspection device 80 inspects whether the workpiece W has a predetermined appearance.
At this time, when it is determined that the appearance inspection apparatus 80 does not have a predetermined appearance, a signal is transmitted to a discharge device (not shown), and the work W that does not have a predetermined appearance is discharged out of the lane of the work mounting system 1.

Next, the transport device 20 moves the workpiece W to the mounting substrate T. Then, when the workpiece W arrives by the workpiece holding means 22 on the storage hole T1 of the mounting substrate T in the workpiece storage table 100, the workpiece W is moved downward by a vertical movement mechanism (not shown) to mount the mounting substrate. The workpiece W is stored in the storage hole T1 of the mounting base T so that the workpiece W is fitted in the storage hole T1 of T.
When the workpiece W is stored in the storage hole T1, the mounting base T is moved by a delivery reel (not shown), and the mounting base T is sequentially advanced so that the storage hole T1 comes to a preset position. Sending in the direction. Then, the workpiece W is stored in the mounting substrate T by repeating the same operation described above. This series of operations is repeated to obtain a mounting base material T on which the workpiece W is stored, and then it is sequentially wound around a tape reel (not shown). The wound mounting substrate T is collected as a product.

  As described above, the workpiece rotating device 70 rotates the first clamping mechanism 72A and the second clamping mechanism 72B by a predetermined angle via the first rotating mechanism 73A and the second rotating mechanism 73B, and the workpiece is rotated along with the rotating operation. Since W is rotated, it is possible to rotate the workpiece W in a desired posture quickly and accurately and place it in the storage hole T1 of the mounting base T. In addition, the posture, orientation angle, and the like when the workpiece W is mounted can be arbitrarily controlled.

As described above, the present invention is not limited to the above-described embodiment, and can be implemented in various forms.
In the present embodiment, the rectangular workpiece W has been described. However, the present invention is not limited to this, and the workpiece W having a square or polyhedral shape can also be rotated. Further, in the workpiece rotating device 70, the posture of the workpiece is not changed when moving to the lower end, but the posture of the workpiece W is changed when moving to the lower end, and further, the workpiece is moved from the lower end to the upper end. In some cases, the posture of the workpiece W may not be changed.

  The one-way clutches 73a and 73a and the guide one-way clutches 74b and 74d rotate in one direction around the clamping shaft C while holding the workpiece W between the first clamping mechanism 72A and the second clamping mechanism 72B. As long as the apparatus has a mechanism capable of performing the above-described operation, the apparatus is not particularly limited, and any apparatus having such a mechanism may be adopted.

It is a top view showing typically the example of composition of the work mounting system concerning the present invention. It is a front view which notches and shows a part of workpiece rotating apparatus which concerns on this invention. It is a side view of the workpiece | work rotation apparatus which concerns on this invention. It is a partial enlarged front view which expands and shows the structure of the position which clamps a workpiece | work in the workpiece | work rotation apparatus which concerns on this invention in a partial cross section. It is operation | movement explanatory drawing in the workpiece | work rotating apparatus which concerns on this invention, (a) is a side view which shows the state which the 1st clamping mechanism and the 2nd clamping mechanism are located in an raising end, (b) is 1st clamping It is a side view which shows the state in which a mechanism and a 2nd clamping mechanism are located in a falling end. FIG. 6 is an operation explanatory view showing a partial cross-section of an operation of clamping a workpiece by the first clamping mechanism and the second clamping mechanism in the workpiece rotating device according to the present invention, and (a) shows the first clamping mechanism and the second clamping mechanism by the stopper mechanism. FIG. 6 is a schematic diagram showing a state where the clamping mechanism is separated, FIG. 5B is a schematic diagram showing a state where the stopper mechanism is released, and FIG. 5C is a schematic diagram showing a state where the clamping mechanism is lowered by the center shaft. FIG. 5 is an operation explanatory view schematically showing a state in which the first rotation mechanism and the second rotation mechanism move along the first guide means and the second guide means in the workpiece rotation device according to the present invention, and (a) is a diagram of the workpiece. The side view and perspective view showing the state of both rotation mechanisms and both guide means in the clamping position, (b) is the side view and perspective view showing the state of moving to the descending end, (c) is from the descending end to the rising end It is the side view and perspective view which show the state which moves.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Work mounting system 20 Conveyance apparatus 22 Work holding means 22A Work adsorption | suction part 30 Work supply apparatus 40 1st position adjustment apparatus 50 Polarity detection apparatus 60 Defective product discharge apparatus 70 Work rotation apparatus 71 Frame housing 71a Frame pillar 71b Upper frame 71c Connection Frame 72A First clamping mechanism 72B Second clamping mechanism 72a Shaft portion 72b Elastic member 72c Shaft housing 72d Spline 72e Tip clamping portion 72f Flange 73A First rotating mechanism 73B Second rotating mechanism 73a First toothed pulley 73b One-way clutch (shaft) Unidirectional rotating mechanism)
73c Pulley with second teeth 73d One-way clutch (unidirectional rotation mechanism for shaft)
74A First guide means 74B Second guide means 74a Guide rotation shaft 74b Guide rotation shaft 74c Guide one-way clutch (one-way rotation mechanism for guide)
74d Pulley 74e Toothed belt 75 Stopper mechanism 75a Contact arm 75b Horizontal arm 75c Stopper support shaft 76 Frame block (support)
76a 1st block 76b 2nd block 76c Central block 76d Communication groove 76e Groove large part 76e ₁ Lower upper surface 76f Block slide mechanism 77 Drive mechanism 77a Drive motor 77b Crank 77c Center shaft 77d Contact push part 77d ₁ Lower surface 77e Tip part 77f Elastic member for shaft 77g Slide mechanism 77h Cam 77i Pin 77k Restriction part 80 Appearance inspection device 90 Second position adjustment device 100 Work storage table W Work T Mounting base material

Claims (4)

In order to place the work in a preset orientation at the mounting position of the tape-like mounting base material, in the work rotation device that rotates the work to a predetermined angle,
A first holding mechanism and a second holding mechanism for holding the workpiece by linearly moving the workpiece holding means for adsorbing and holding the workpiece to a preset set position so as to be able to approach and separate from both sides of the workpiece. When,
A first rotation mechanism and a second rotation that are provided in the first clamping mechanism and the second clamping mechanism, respectively, and rotate the first clamping mechanism and the second clamping mechanism at a predetermined angle around the linear movement axis. Mechanism,
A support that supports the first clamping mechanism and the second clamping mechanism;
A drive mechanism for moving the support from a preset ascending end to a descending end;
First guide means and second guide means installed facing the first rotation mechanism and the second rotation mechanism that are moved by the drive mechanism and guiding from the rising end to the lowering end;
When the first rotating mechanism and the second rotating mechanism move along the first guide means and the second guide means, the rising end to the descending end or the descending end to the rising end In any one of the reciprocating motions up to the above, the workpiece rotating device is configured to rotate the first clamping mechanism and the second clamping mechanism to a set angle. The first clamping mechanism and the second clamping mechanism include a shaft portion provided via an elastic member that urges them in directions close to each other, and a shaft housing provided via a spline that can move the shaft portion in a linear direction. A body, a distal end clamping portion provided at the distal end of the shaft portion protruding from the shaft housing toward the workpiece, and abutting and sandwiching the workpiece, and a flange provided on the shaft portion for supporting the distal end clamping portion And
The first rotation mechanism and the second rotation mechanism hold the shaft casing, rotate in one direction and do not rotate in the other direction, and the one-way rotation mechanism for the shaft or the shaft casing. Each provided with a toothed pulley provided on the body,
The first guide means and the second guide means are provided with one and the other rotation shafts, and one of the rotation shafts provided with a one-way rotation mechanism for guiding that is rotated in one direction and is not rotated in the other direction. A pulley provided on the other of the rotation shafts, a one-way rotation mechanism for the guide, and a toothed belt that spans the pulley and meshes with the toothed pulley,
The straight lines of the first clamping mechanism and the second clamping mechanism until the workpiece is delivered from the workpiece holding means to the first clamping mechanism and the second clamping mechanism and after the workpiece is delivered to the workpiece holding means. The work rotating apparatus according to claim 1, wherein a stopper mechanism that restricts movement in a direction is provided on the support. The stopper mechanism includes a contact arm that contacts the flange, a horizontal arm provided with a predetermined angle at one end of the contact arm, and the other end of the horizontal arm pivoted to the support. Each has a stopper spindle to support,
The support body is provided between a first block and a second block that support the first clamping mechanism and the second clamping mechanism at the same height position, and a communication groove in the center. And the communication groove has a large groove portion with a large groove width at a predetermined position in the communication direction.
The drive mechanism includes a drive motor, a crank that converts rotation of the drive motor into linear motion, and a center shaft that moves the support up and down by the crank.
The center shaft is disposed at a position where the tip of the center shaft pushes the horizontal arm of the stopper mechanism at the rising end, and is disposed in communication along the communication groove of the support, and the large groove portion. And having a contact pressing portion formed so as to be loosely fitted to the center shaft, and a block elastic member for always urging the center block upward, between the center shaft and the center block,
A restriction portion for restricting a rising end position of the support body is provided at a position to push the horizontal arm so that the center shaft protrudes from the center block against the elastic member for block. The work rotation device according to claim 2. A workpiece rotating device according to any one of claims 1 to 3, a workpiece supply device that transports and supplies a workpiece to the workpiece rotating device, and a workpiece rotated at a predetermined angle by the workpiece rotating device in a tape shape. And a workpiece storage device for storing the workpiece on a mounting substrate.

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