JP4644331B2 - Chip mounter substrate transfer device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip mounter substrate transfer device for positioning and unloading a circuit board in a chip mounter as a part of a surface mount system for mounting electronic components such as resistors, capacitors and ICs on an electric circuit board. .
[0002]
[Prior art]
Conventionally, as shown in the schematic diagram of FIG. 9, a lined printed circuit board manufacturing apparatus has a chip mounter 80 as a center, and a dispenser 82 is arranged on the upstream process side, and a reflow 84 is arranged on the downstream process side in a straight line. Yes.
[0003]
The chip mounter 80 usually has a plurality of chip mounting heads 80A, and a plurality of the chip mounters 80 may be continuously arranged.
[0004]
Then, there are gaps between the conveyance belts 88, 88A, 88B of the substrate conveyance devices 86, 86A, 86B installed corresponding to the chip mounter 80, the dispenser 82, and the reflow 84, which are each unitized devices. In general, the substrate transfer devices are installed close to each other so as to be as small as possible.
[0005]
As described above, when the substrate transfer device 86 of the chip mounter 80 is installed close to the substrate transfer device 86A, 86B, or the substrate transfer device of another chip mounter, etc. When the substrate transfer device 86 is to be removed for maintenance or the like, there is a high possibility that the end of the substrate transfer device 86 is brought into contact with another adjacent substrate transfer device or the like.
[0006]
Since the substrate transfer device is a precision machine and even a slight impact causes a failure, it is desirable to avoid such contact as much as possible.
[0007]
[Problems to be solved by the invention]
On the other hand, when the substrate transfer device is installed with a sufficient gap to avoid contact with the substrate transfer device, there is a problem that the reliability of the substrate transfer is lowered.
[0008]
In view of such problems, the present invention is capable of precisely and easily adjusting a gap between adjacent substrate transfer devices, etc., has excellent substrate transfer reliability, and is installed or removed. An object of the present invention is to provide a substrate transfer apparatus in which failure due to contact of the end portions is unlikely to occur.
[0009]
[Means for Solving the Problems]
According to the present invention, as in claim 1, a pair of left and right endless transport belts that support the substrate from below the widthwise ends, and a pair of left and right pairs that support the transport belts near the front and rear ends in the transport direction, respectively. And a pair of left and right transport rails that support the pulley in the longitudinal direction, and the substrate extends along a horizontal transport path. Each of the transport rails constitutes at least one end portion in the longitudinal direction of the chip mounter and the slide transport rail that pivotally supports the end pulley on the one end side of the pulley, A fixed conveyance rail that is a portion, and the slide conveyance rail is a base end portion on the fixed conveyance rail side, and is movable in a certain range in the conveyance direction. The end pulley is supported by a constant conveyance rail, and the end pulley is pivotally supported at least between the protruding position where the end pulley is farthest from the fixed conveyance rail and the retracted position where the pulley is closest. The above object is achieved by a substrate transfer device provided with fixing means capable of fixing the slide transfer rail to the fixed transfer rail at the protruding position.
[0010]
Further, the substrate transport device is provided with a rail guide arranged in a substantially rectangular plate-like shape so as to face each other in a pair of left and right, and the rail guide supports the fixed transport rail. You may make it arrange | position at the substantially same position as the front-end | tip of the said end part pulley in a drawing-in position.
[0011]
Furthermore, the substrate transport apparatus includes a tension adjusting mechanism that maintains the tension of the transport belt within a certain range so that the substrate can be transported by the transport belt at an arbitrary position of the slide transport rail. May be.
[0012]
Furthermore, the tension adjusting mechanism includes an auxiliary pulley that is disposed in the vicinity of the end pulley, around which the conveyor belt is wound, and a return pulley. The pulley is pivotally supported by the slide transport rail so that the upper end point thereof is positioned below and on the proximal end side with respect to the upper end point of the end pulley, and the upper end point of the return pulley is , Substantially at the same height with respect to the lower end point of the auxiliary pulley at the protruding position, and is substantially pivotally supported by the fixed transport rail so as to be positioned on the tip side, In the position, it may be configured such that the tension of the conveyor belt is kept substantially the same.
[0013]
The tension adjusting mechanism is disposed at an intermediate position of pulleys that support the vicinity of front and rear ends of the conveyor belt, and a tension pulley around which the conveyor belt is wound and a tension pulley that pivotally supports the tension pulley. A slider and an elastic member, and the slider is movable to the fixed conveyance rail via the elastic member in a direction in which the length of the conveyance belt is changed by the movement of the tension pulley. The elastic member may be arranged in a direction in which tension is applied by absorbing the looseness of the conveyor belt.
[0014]
Furthermore, a stopper is provided for limiting the movement range of the slide conveyance rail in the conveyance direction, and the stopper is substantially supported by the fixed conveyance rail so as to be movable and fixed in the conveyance direction. The moving range of the rail may be adjustable.
[0015]
In the present invention, when the substrate transport apparatus is attached or detached, the end pulley is moved together with the slide transport rail and pulled toward the base end side, thereby sufficiently increasing the gap between the adjacent apparatuses. Is possible.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.
[0017]
As shown in FIG. 1, a substrate transport apparatus 10 according to an example of an embodiment of the present invention is in a chip mounter 11, and a pair of left and right endless transport belts 14 that support a substrate 12 from below at both ends in the width direction. And a unit 17 consisting of a pair of left and right end pulleys 16 for supporting the transport belt 14 in the vicinity of the front and rear ends in the transport direction, and the end in the vicinity of both ends in the longitudinal direction. A pair of left and right conveying rails 18 that pivotally support the pulley 16 and a tension adjusting mechanism 40 described later are configured.
[0018]
The substrate transfer device 10 in the chip mounter 11 is usually configured by supporting a plurality of the units 17 on a pair of transfer rails in a straight line as shown in FIG. In an example of an embodiment of the invention, for the convenience of explanation, the contents of the present invention will be described first with respect to the substrate transfer apparatus 10 configured to have one unit 17.
[0019]
The chip mounter 11 is disposed between a dispenser 19A located on the upstream process side and a reflow 19B located on the downstream process side, 14A represents a conveyance belt of a substrate conveyance device in the dispenser 19A, and 14B represents the reflow 19B. 2 shows a transport belt of the substrate transport apparatus in FIG.
[0020]
As shown in FIG. 2, the transport rail 18 is composed of a slide transport rail 20 that is one end in the longitudinal direction and a fixed transport rail 22 that is another portion.
[0021]
The slide conveyance rail 20 is supported by the fixed conveyance rail 22 so as to be movable within a certain range in the conveyance direction at a base end portion 20A on the fixed conveyance rail 22 side, and the end pulley 16 is supported by a distal end portion 20B on the opposite side. The structure is such that the end pulley 16 can be fixed to the fixed transport rail 22 by the fixing means 24 between the protruding position where the end pulley 16 is farthest from the fixed transport rail 22 and the retracted position where the end pulley 16 is closest. Yes.
[0022]
The fixing means 24 includes a bolt and a nut that pass through the long hole 24 </ b> A and are screwed into the fixed conveyance rail 22.
[0023]
The long hole 24 </ b> A is formed in the vicinity of the base end portion 20 </ b> A of the slide conveyance rail 20.
[0024]
The fixed conveyance rail 22 is a substantially rectangular plate-like body, and is supported by a rail guide 26 arranged to face each other in a pair of left and right, and a tip 26A of the rail guide 26 is, as shown in FIG. It arrange | positions so that it may become substantially the same position as the front-end | tip 16A of the said edge part pulley 16 in the said drawing-in position.
[0025]
A protrusion 20 </ b> C is provided at the lower part of the slide conveyance rail 20, and the protrusion 20 </ b> C can be brought into contact with the stopper 30. The stopper 30 is supported by the rail guide 26 so as to be movable within a certain range in the transport direction, and can be fixed by a fixing means 28 within the certain range. Thereby, the slide position of the slide conveyance rail 20 can be adjusted by adjusting the fixing position of the stopper 30.
[0026]
Next, the operation of the substrate transfer apparatus 10 at the time of installation and removal from the transfer line will be described.
[0027]
When the substrate transfer device 10 is installed in the transfer line, the lock by the fixing means 24 is released, and the slide transfer rail 20 is slid to the retracted position as shown in FIG.
[0028]
Since the end pulley tip 16A is substantially at the same position as the rail guide tip 26A, it is possible to increase the gap between adjacent substrate transfer devices and the like, and thus work can be performed without contacting them. is there.
[0029]
After the lower base member 10A of the substrate transfer apparatus 10 shown in FIG. 1 is fixed to the transfer line by a fixing means such as a bolt, the slide transfer rail 20 is slid in the protruding direction, and the transfer adjacent to the transfer belt 14 is performed. The slide conveying rail 20 is fixed to the fixed conveying rail 22 by the fixing means 24 by adjusting so that an appropriate gap is obtained between the belts 14A and 14B.
[0030]
Since the adjustment of the gap between the conveyance belt 14 and the adjacent conveyance belts 14A and 14B is performed by sliding the slide conveyance rail 20, precise adjustment can be easily performed.
[0031]
After the slide conveyance rail 20 is fixed, the stopper 30 is brought into contact with the protrusion 20C for positioning, and the stopper 30 is fixed by the fixing means 28.
[0032]
When the substrate transport apparatus 10 is replaced or removed from the transport line for the purpose of maintenance, the lock by the fixing means 24 is released, the slide transport rail 20 is slid, and the operation is performed as the retracted position.
[0033]
As in the installation operation, the substrate transfer device 10 can be easily removed without bringing it into contact with an adjacent substrate transfer device or the like.
[0034]
When the substrate transfer device 10 is installed on the transfer line again after maintenance, the stopper 30 is positioned in the installation operation. Therefore, the slide transfer rail 20 is in contact with the stopper 30 until it comes into contact with the stopper 30. By sliding the, the adjustment state before removal can be easily reproduced.
[0035]
In the example of the present embodiment, the slide transport rail 20 is fixed to the fixed transport rail 22 by the fixing means 24 having a bolt and a nut, and is slid manually. As shown in FIG. 4, an actuator 32 and an electromagnetic valve 34 are provided, and one end side of the actuator is supported by the rail guide 26 and the other end side is supported by the slide transport rail. By opening and closing a contact switch 38 disposed between the valve 34 and the power source 36, the slide transport rail 20 slides, and the slide transport rail 20 is sandwiched between the stopper 30 and the actuator 32. You may comprise so that it may be fixed.
[0036]
Next, the tension adjusting mechanism 40 according to the example of the embodiment of the present invention will be described.
[0037]
As shown in FIG. 5, the tension adjustment mechanism 40 includes an auxiliary pulley 42 and a return pulley 44, and the auxiliary pulley 42 has an upper end point 42 </ b> A positioned at a lower end point 16 </ b> B of the end pulley 16. On the other hand, the return pulley 44 is pivotally supported on the slide transport rail 20 so as to be positioned at the base end 20A side at substantially the same height, and the upper end point 44A of the return pulley 44 is the lower end of the auxiliary pulley 42 at the protruding position. In this configuration, the rail guide 26 is pivotally supported so as to be positioned at the tip end 20B side at substantially the same height with respect to the position of the point 42B.
[0038]
Next, the operation of the tension adjusting mechanism 40 will be described.
[0039]
In FIG. 5, when the slide conveying rail 20 slides, the upper end point 16C of the end pulley 16 moves together, and the upper surface length of the conveying belt 14 changes by this amount of movement, but the lower end point of the auxiliary pulley. Since 42B moves with respect to the upper end point 44A of the return pulley and absorbs the change in the length of the upper surface of the conveyor belt 14, the tension of the conveyor belt 14 is kept substantially the same.
[0040]
In the example of the embodiment shown in FIG. 5, the position of the upper end point 42A of the auxiliary pulley 42 is substantially the same height as the lower end point 16B of the pulley, but the present invention is not limited to this. The upper end point 42A of the auxiliary pulley may be lower than the upper end point 16C of the pulley.
[0041]
The tension adjusting mechanism 40 includes a tension pulley 46, a slider 48, an elastic member 50, a bend pulley 52, and a snap pulley 54 as in the example of the other embodiment shown in FIG. The slider 48 may support the tension pulley 46 and be supported by the fixed conveyance rail 22 via the elastic member 50 so as to be movable along the guide groove 56.
[0042]
In this configuration, when the slide conveyance rail 20 slides, the elastic member 50 contracts or expands so as to absorb the slack of the conveyance belt 14, so that the tension of the conveyance belt 14 can be kept above a certain level. It is.
[0043]
Furthermore, the tension adjusting mechanism 40 is arranged with a tension pulley 46, a slider 48, and a bend pulley 52 as in the example of the other embodiment shown in FIG. Tension may be applied to the conveyor belt 14 by gravity due to its own weight.
[0044]
In the case of the gravity type, the tension of the conveyor belt 14 is always kept constant.
[0045]
In the example of the present embodiment, the slide conveyance rail 20 constitutes both ends of the conveyance rail 18, but the present invention is not limited to this, and the conveyance rail 18 Only one end thereof may be the slide conveyance rail 20.
[0046]
Furthermore, in the example of the present embodiment, the substrate transfer device 10 in the chip mounter 11 is configured to have one unit 17, but as described above, normally, as shown in FIG. A plurality of units 17A, 17B, 17C,... Are integrally and continuously arranged, and the present invention is naturally applied to such a substrate transfer apparatus 60.
[0047]
In this case, by separately using a unit that transports the substrate and mounts electronic components and a unit that transports only the substrate, the substrate transport efficiency and chip mounting efficiency are improved, and the end on the substrate carry-in side is improved. A pair of pulleys 62A located in the vicinity of the portion and a pair of pulleys 62B located in the vicinity of the end portion on the substrate carry-out side constitute an end pulley, and at least one of these end pulleys 62A and 62B is the slide transporter. It is supported by the rail 20 so as to be movable between the protruding position and the retracted position, and can be fixed by the fixing means 24.
[0048]
【The invention's effect】
According to the present invention, when the substrate transfer device is installed or removed from the transfer line, the operation is easily performed without contacting the adjacent substrate transfer device or the like, the work efficiency is improved, and the adjacent substrates are The precision and easy adjustment of the gap with the transfer device and the like are possible, and the excellent effect of improving the reliability of substrate transfer is brought about.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an outline of a substrate transfer apparatus according to an example of an embodiment of the present invention. FIG. 2 is a side view showing a main part of a transfer rail in the substrate transfer apparatus. FIG. 4 is a side view including a partial circuit diagram illustrating a driving method of the transport rail by an actuator. FIG. 5 is a side view illustrating a main portion of the transport rail including the tension adjusting mechanism. FIG. 7 is a side view showing the main part of the transport rail including the tension adjusting mechanism. FIG. 8 is a side view showing the main part of the transport rail including the tension adjusting mechanism. FIG. 9 is a perspective view showing the outline of a conventional substrate transfer apparatus.
DESCRIPTION OF SYMBOLS 10 ... Substrate conveyance apparatus 10A ... Lower base member 12 ... Substrate 14, 14A, 14B, 60A, 60B, 60C ... Conveyor belt 16, 62A, 62B ... End pulley 16A ... End pulley tip 16B ... Lower end point 16C ... Upper end point 17, 17A, 17B, 17C ... unit 18 ... transport rail 20 ... slide transport rail 20A ... base end 20B ... tip 20C ... projection 22 ... fixed transport rail 24 ... fixing means 26 ... rail guide 26A ... rail guide tip 28 ... Fixing means 30 ... Stopper 32 ... Actuator 34 ... Solenoid valve 36 ... Power supply 38 ... Contact switch 40 ... Tension adjusting mechanism 42 ... Auxiliary pulley 42A ... Upper point 42B ... Lower point 44 ... Return pulley 44A ... Upper point 46 ... Tension pulley 48 ... Slider 50 ... elastic member 52 ... bend pulley 54 ... snap pulley 56 ... guide groove

Claims (4)

At least one unit including a pair of left and right endless transport belts that support the substrate from below both ends in the width direction and a pair of left and right pulleys that support these transport belts in the vicinity of the front and rear ends in the transport direction. When, the transport direction is the longitudinal direction, a pair of left and right conveyance rails for supporting the pulley, and the rail guide is disposed to face the one lateral Taitaira rows rectangle plate-like body for supporting the carrier rails, In a substrate transfer device of a chip mounter that is configured to transfer the substrate along a horizontal transfer path,
The transport rail is composed of a slide transport rail that constitutes at least one end portion in the longitudinal direction and pivotally supports an end pulley on the one end side of the pulley, and a fixed transport rail that is another part, The fixed conveyance rail is supported by the rail guide, and the slide conveyance rail is supported by the fixed conveyance rail at a base end portion on the fixed conveyance rail side so as to be movable within a certain range in the conveyance direction. The end pulley is pivotally supported at the tip,
A fixing means capable of fixing the slide transport rail to the fixed transport rail at least at the projecting position between a projecting position where the end pulley is furthest away from the fixed transport rail and a retracting position which is closest to the fixed pulley; A stopper for restricting a movement range of the slide conveyance rail in the conveyance direction, and the stopper is movable in the conveyance direction and fixedly supported by the rail guide so that the movement of the slide conveyance rail is performed. The range is adjustable,
Than said tip protrudes to the side away from the fixed conveying rails, the tip of the rail guides the tip and the same position of the end pulleys in the retracted position the tip of the slide transporting rails of the end portion pulley A substrate transfer device for a chip mounter, wherein   The tension adjusting mechanism according to claim 1, further comprising a tension adjusting mechanism that maintains a tension of the transport belt in a certain range so that the substrate can be transported by the transport belt at an arbitrary position of the slide transport rail. A substrate transfer device for chip mounters. In Claim 2, the tension adjusting mechanism is disposed in the vicinity of the end pulley, and includes an auxiliary pulley around which the conveyor belt is wound continuously with the end pulley, and a return pulley. The auxiliary pulley is pivotally supported by the slide transport rail so that its upper end point is located below and on the proximal end side with respect to the upper end point of the end pulley, and the return pulley is endpoints, against the lower end point of the auxiliary pulley in the projected position, the same height, and, to be located in the distal end side, is supported on the rail guide, in any position of the slide carrier rails the substrate transport apparatus of the chip mounter, characterized in that tension of the conveyor belt is configured to be kept at the same. 3. The tension adjusting mechanism according to claim 2, wherein the tension adjusting mechanism is disposed at an intermediate position of pulleys supporting the vicinity of front and rear ends of the transport belt, and the tension pulley around which the transport belt is wound and the tension pulley. The rail guide includes a slider that supports the shaft, and an elastic member, and the slider is movably moved through the elastic member in a direction in which the length of the conveyor belt is changed by the movement of the tension pulley. A substrate transfer device for a chip mounter, wherein the elastic member is arranged in a direction to apply tension by absorbing looseness of the transfer belt.

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