JP2603607B2 - Input device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input device for inputting an arbitrary work onto a conveying means such as a belt conveyor or a roller conveyor in a furniture manufacturing line or the like.
In particular, the present invention relates to a device devised so that the position of loading a workpiece onto a transfer means in the width direction can be appropriately adjusted in consideration of the influence on another processing device installed on the secondary side of the transfer means.

[0002]

2. Description of the Related Art For example, in a furniture manufacturing line, there are various pieces (work) for assembling furniture, and these works are sometimes polished by a wide sander as a polishing apparatus. In this case, the works are loaded one by one on a belt conveyor, and the works are introduced into the wide sander by the belt conveyor. The introduced work is subjected to predetermined polishing by a wide sander and is carried out. Loading of the work onto the belt conveyor is performed by a loading device. This type of loading device sucks and holds the stacked workpieces one by one by a suction pad, and in this state, transports the workpiece onto a belt conveyor and places and loads the workpiece.

[0003]

According to the above-mentioned conventional configuration, there are the following problems. That is, the wide sander is installed with a certain width, and the work can be polished within the range of the width.
However, if the width direction position of the passing workpiece relative to the wide sander is always the same, polishing is always performed at the same position of the wide sander. for that reason,
There is a problem in that only a specific portion of the wide sander is worn out, and the other portion has to be replaced even though the polishing ability remains sufficiently.

[0004] The present invention has been made based on such a point, and an object thereof is that when a workpiece is loaded on a transfer means, for example, another processing set on a secondary side of the transfer means is performed. An object of the present invention is to provide an input device that allows the input position thereof to be freely adjusted in consideration of the influence on the device.

[0005]

In order to achieve the above-mentioned object, the present invention provides an input device comprising a belt conveyor or a roller conveyor, which is provided near a conveying means for conveying a work, and which comprises: A suction pad attached to the main body and reciprocally mounted in a direction parallel to a width direction orthogonal to the transfer direction of the transfer means and provided to lift and lower a suction pad for holding and holding a work stacked and arranged in the vicinity of the transfer means is provided. A work suction unit, a work detection unit that is installed at a predetermined position in the middle of the reciprocating movement of the work suction unit, and detects a work sucked and held by a suction pad when the work suction unit moves forward; Detecting means for detecting the uppermost work among the stacked works when the mounted work suction unit is moved back; The forward movement amount of the work suction unit is adjusted based on the detection signal from the work detection means to control the width direction position of the work to be loaded on the conveyance means, and the work is controlled based on the detection signal from the detection means. Control means for controlling the amount of return of the suction means.

At this time, the work detecting means is provided with a first detection sensor, and the first detection sensor detects the rear end of the work sucked and held by the suction pad of the work suction unit, and then sucks the work by a set amount. The unit is stopped after moving forward, and the set amount is increased by a predetermined amount each time one work is input, whereby the work is input while being shifted by a predetermined amount in the width direction of the transporting means. It is possible to do. Further, the work detecting means is provided with a second detection sensor installed at a position closer to the forward movement direction than the first detection sensor, and the second detection sensor detects the work sucked and held by the suction pad of the work suction unit. It is conceivable to detect the leading end, thereby stopping the shift of the position of the work 51 to the transport means side, and resetting the work 51 to the initial set amount.

[0007]

That is, in the case of the loading device according to the present invention, the workpiece moves forward while sucking and holding the workpiece by the suction pad of the workpiece suction unit, transports the workpiece in the direction of the transport means, and then loads the workpiece onto the transport means. . At this time, the work being transported is detected by the work detection means, and the forward movement amount of the work suction unit is adjusted by the control means based on the detection signal. Thereby, the position in the width direction of the work on the conveying means is arbitrarily controlled. Also, when the work suction unit moves backward to suck and hold the next work after the work is input, the next work is detected by the detecting means, and the amount of movement of the work suction unit is controlled based on the detected work. It is.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. First, there is a charging device main body 1, which is assembled in a cantilever shape using a steel material as shown in FIG. 3, and is composed of a column 3 and a beam 5. ing. A work suction unit 7 is installed on the beam 5 so as to be movable in the longitudinal direction of the beam 5. The work suction unit 7 includes a moving table 9. An air cylinder mechanism 11 is provided at a center position of the moving table 9. The rod 13 of the air cylinder mechanism 11
A suction pad 19 is attached to the tip of the device via a plate 15 and four support members 17. The suction pad 19 is moved up and down by driving the air cylinder mechanism 11. A blower 21 shown in FIG. 2 is connected to the suction pad 19 through a piping group (not shown) so that a desired vacuum state required for suction can be formed.

The work suction unit 7 moves along linear guides 23 and 25 laid in a state of being extended in the longitudinal direction to the left and right of the beam 5. The driving means 27 moves this. First, a drive motor 29 is provided, and a pulley 31 is fixed to a rotation shaft of the drive motor 29. On the other hand, a ball screw 33 is laid in parallel with the drive motor 29, and a pulley 35 is fixed to the ball screw 33. A belt 37 is wound around the pulleys 31 and 35. Therefore,
When the drive motor 29 rotates in an appropriate direction, the ball screw 33 rotates in the same direction. The above ball screw 33
Is screwed with a ball nut 39. The rotation of the ball nut 39 is restricted, and the ball nut 39 is fixed to the work suction unit 7 described above. When the ball screw 33 is rotated by the rotation of the drive motor 29,
The ball nut 39 whose rotation is restricted reciprocates, whereby the work suction unit 7 reciprocates. The ball screw 33 has bearing members 41 and 4.
3, 45, and an encoder 47 for position detection is attached to the end. The encoder 47 detects the number of rotations of the ball screw 33.

As shown in FIG. 3, a roller conveyor 49 as a conveying means is provided at a position below the beam 5 of the main body 1 of the charging device. Also, the roller conveyor 49
A lifter 53 on which the workpieces 51 are stacked is installed at a position adjacent to the lifter 53. The workpieces 51 are loaded one by one onto the roller conveyor 49 by the loading device according to the present embodiment. The loaded work 51 is conveyed by a roller conveyor 49, and is sent to a wild Santa 55 as a polishing device as shown in FIG.

The beam 5 above the roller conveyor 49 has an optical sensor 57 as a first detection sensor,
An optical sensor 59 as a second detection sensor is attached. The first detection sensor and the second detection sensor constitute a work detection unit. The optical sensor 57 is of a photoelectric tube type and is of a reflection type. When there is no object below, the optical sensor 57 is turned off, and is turned on when the front end of the work 51 passes. Is turned off again by passing through. Optical sensor 59
Are of the same type, and change from the off state to the on state when the tip of the work 51 passes.

When the work 51 is sucked and held by the suction pad 19 and transported onto the roller conveyor 49, one end of the work 51 projects from the suction pad 19 by a predetermined amount as shown in FIG. The positional relationship is such that the optical paths of the optical sensors 57 and 59 can be blocked. This is realized by appropriately setting the position of the lifter 53. Then, when the work 51 is sucked and held by the suction pad 19 and loaded onto the roller conveyor 49, the optical sensor 57 is turned on from off when the tip of the work 51 blocks the optical path of the optical sensor 57.
When the work 51 is further moved to the roller conveyor 49 side and the rear end of the work 51 passes through the optical path of the optical sensor 57, the optical sensor 57 is turned off from on. In the case of this embodiment, the work suction unit 7 is moved forward and stopped by the set amount from this point. The detection of the set amount is confirmed by detecting the rotation speed of the ball screw 33 by the encoder 47. Then, the work 51 is placed and loaded on the roller conveyor 49 at that position.

Therefore, by appropriately changing the set amount, the work 51 can be placed and loaded at an arbitrary position in the width direction on the roller conveyor 49. In the case of the present embodiment, the workpieces 51 are placed one by one on the roller conveyor 49.
Each time the workpiece 51 is placed and loaded on the roller conveyor 49, the set amount is increased by a predetermined amount, and the workpiece 51 is placed on the roller conveyor 49 while being shifted in the width direction by a predetermined amount.
throw into. Thereby, the wild sander 5 shown in FIG.
5, the work 51 is introduced uniformly in the width direction, so that the wild sander 55 can be used uniformly in the width direction to prevent local wear.

As described above, the loading / loading position of the work 51 on the roller conveyor 49 gradually shifts to the right in the figure as shown in FIG. It is detected by the optical sensor 59. That is, when the mounting / loading position of the work 51 gradually shifts to the right side in FIG. 3, the tip of the work 51 eventually blocks the optical path of the optical sensor 59, and at that time, the optical sensor 59 Turns off to on. In the case of the present embodiment, one cycle is terminated at that time, and the set amount described above is reset to restart from the beginning.

A work 51 is provided on the side of the roller conveyor 49.
An optical sensor 61 for detecting the stacking height of is provided. The optical sensor 61 is also of a photoelectric type and a reflection type, and detects the height of the work 51 stacked on the lifter 53. When the work 51 at the uppermost position is placed and loaded on the roller conveyor 49, and the stacking height becomes low, the work is sent to the optical sensor 6 as described above.
1, the lifter 53 is driven to raise the stacked work 51. Thus, the height of the stacked works 51 is always maintained at a constant level.

The work suction unit 7 is provided with detection means 63 for controlling the return amount of the work suction unit 7. This detecting means 63 is provided with an air cylinder mechanism 65.
, A limit switch section 67, an action rod body 69 and the like. Work 5 by work suction unit 7
1 is sucked and held, and is conveyed to the roller conveyor 49 side;
After the work 51 is placed and loaded on the roller conveyor 49 at a predetermined position, the work suction unit 7 returns to the original position. At this time, the air cylinder 65 is driven to lower the limit switch 67 and the action rod 69. As a result, when the work suction unit 7 returns, the working rod 69 hits the side of the stacked work 51. As a result, the limit switch 67 is turned on. In the case of this embodiment, the work suction unit 7 is moved back by a predetermined amount (actually, the timer is arbitrarily set to operate for a predetermined time) from that point. In FIG. 4, reference numeral 71 denotes a control panel, which corresponds to control means.

The operation will be described based on the above configuration. First, a plurality of works 51 are set on a lifter 53 at a predetermined position in a state of being stacked. On the other hand, the work suction unit 7 is at the initial position (the position shown in FIG. 3), from which the air cylinder mechanism 11 is driven to lower the suction pad 19, and the work at the uppermost position among the stacked works 51. Is absorbed and held. After the work 51 is sucked and held, the air cylinder mechanism 11 is driven to drive the suction pad 1
9 is raised.

Next, the driving means 27 is driven to move the work suction unit 7 to the roller conveyor 49 side. The movement of the work suction unit 7 toward the roller conveyor 49 causes the tip of the work 51 sucked and held to approach the optical path of the optical sensor 57. Thereby, the optical sensor 57 is turned on from off. When the work suction unit 7 is further moved to the roller conveyor 49 side, the rear end of the work 51 passes through the optical path of the optical sensor 57,
Thereby, the optical sensor 57 is turned off from on. After moving by a predetermined amount from this point, the driving means 2
Then, the movement of the work suction unit 7 toward the roller conveyor 49 by the operation 7 is stopped. Then, at that position, the air cylinder mechanism 11 is driven to lower the suction pad 19, and the work 51 sucked and held is moved to the belt conveyor 4.
9 and is placed at a predetermined width direction position. The position where the work is first placed and loaded is determined by the roller conveyor 49.
This is a position closer to the left side in FIG.

After the work 51 is placed and fixed on the roller conveyor 49, the air cylinder mechanism 11 is driven to raise the suction pad 19, and the driving means 27 is driven to move the work suction unit 7 to the side opposite to the roller conveyor 49. Move and return to. At that time, the air cylinder mechanism 65 of the detecting means 63 is driven to lower the limit switch 67 and the action rod 69. Therefore, the work suction unit 7
Return to the roller conveyor 49 side, the action rod 69
On the side of the stacked work 51, and the limit switch 67 is turned on. After counting for a predetermined time from that point, the movement of the work suction unit 7 to the side opposite to the roller conveyor 49 by the driving means 27 is stopped. In the case of this embodiment,
Since the works 51 are stacked in a line, the work 51 always returns to the same position (initial position). On the contrary,
For example, when works of half the size are stacked in two rows, the return positions are alternately shifted.

Next, the same operation as described above is repeated to suck and hold the next work 51, and
Conveyed to the 9th side. At this time, the work 5 sucked and held
The front end of the optical sensor 57 approaches the optical path of the optical sensor 57. Thereby, the optical sensor 57 is turned on from off. When the work suction unit 7 is further moved toward the roller conveyor 49, the rear end of the work 51 passes through the optical path of the optical sensor 57, whereby the optical sensor 57 is turned off from on. After moving by the set amount from this point, the movement of the work suction unit 7 toward the roller conveyor 49 by the driving means 27 is stopped. The set amount is obtained by adding a predetermined amount to the initial set amount. Then, at this position, the air cylinder mechanism 11 is driven to lower the suction pad 19, and the work 51 sucked and held is placed and thrown at a predetermined width direction position on the roller conveyor 49. In this case, the work is placed and loaded at a position shifted rightward in FIG. 3 by a predetermined amount in the width direction of the roller conveyor 49 from the position at which the work is placed and loaded first.

Hereinafter, by repeating the same operation,
The work 51 is placed and loaded while moving to the right in FIG. 3 by a predetermined amount in the width direction of the roller conveyor 49. Then, the work suction unit 7 is moved to the roller conveyor 4.
When the tip of the work 51 reaches the optical path of the optical sensor 59 by moving to the 9 side, the optical sensor 59 is turned on from off. At that point, the movement of the work placement / loading position is completed, the set amount is reset, and the process returns to the first step. Hereinafter, the same operation is repeated.

FIG. 5 shows an example of the input pattern. In the case of the above embodiment, it corresponds to a kind of the C pattern in FIG. In the case of the C pattern shown in the figure, three workpieces 51 are simultaneously transported, but in the above embodiment, one workpiece 51 is provided at a time. In addition, the pattern A and the pattern B are not shifted in position, and are a conventional input example. The D pattern shows the case where the work 51 is frame-shaped.

According to this embodiment, the following effects can be obtained. First, when the workpiece 51 is placed and loaded on the roller conveyor 49, the loading and loading position can be shifted by a predetermined amount to the right in the width direction of the roller conveyor 49 in FIG. Therefore, even when a work is introduced into the wild sander 55, the work is introduced with a predetermined amount of displacement in the width direction. Therefore, only the local portion in the width direction of the wild sander 55 does not function intensively, and the polishing function is exerted uniformly in the width direction. Can be eliminated.

Further, it is possible to arbitrarily set how much the work 51 is placed and loaded in the width direction of the roller conveyor 49, so that it can be appropriately adjusted according to the size of the wild sander 55 and the like. do it. Also, the secondary side processing device other than the wide sander 55 may be used.

The present invention is not limited to the above embodiment. In the case of the one embodiment, the work 51 is described assuming a single plate-shaped work. However, as shown in FIG. 5, the work 51 can be similarly applied even if it is assembled in a frame shape. . In this case, as the operation of the optical sensor 57, from off to on, from on to off, from off to on again,
This means that the set amount is switched from on to off, and the set amount is counted from the second off point.
Further, in the above-described embodiment, the optical sensors are used as the various sensors, and as an example, the photoelectric tube type and the reflection type are used. However, the present invention is not limited thereto. An optical type or a type in which a light emitting unit and a light receiving unit are arranged to face each other may be used. Further, the detection may be performed by a mechanical switch such as various limit switches instead of the optical type. Further, in the above-described embodiment, the input target is a piece of furniture, but it is needless to say that the present invention is not limited to this.

[0026]

As described in detail above, according to the input device of the present invention, the work being transported is detected by the work detection means, and the forward movement amount of the work suction unit is regulated to the set amount by the control means based on the work detection means. This controls the position of the work on the carrying means in the width direction, so that the work can be placed at any position in the width direction of the carrying means. Therefore, for example, it is also possible to set so that the work is conveyed while being shifted by a predetermined amount in the width direction, and when a wide sander or the like is installed on the secondary side of the conveyance means, the work is uniform in the width direction of the wide sander. The work can be supplied to the head, and the wasteful replacement due to the local wear of the wide sumb can be eliminated. In addition, even when the work suction means moves backward after the work is input, the work suction means is controlled based on the detection signal from the detection means, so that it is necessary to return to an appropriate place for works of various sizes. The next suction operation can be started.

[Brief description of the drawings]

FIG. 1 is a plan view of a charging device according to an embodiment of the present invention.

FIG. 2 shows an embodiment of the present invention and is a front view of a charging device.

FIG. 3 is a view showing one embodiment of the present invention, and is a side view of a charging device.

FIG. 4 is a view showing one embodiment of the present invention, and is a perspective view of a charging device.

FIG. 5 is a plan view showing an injection pattern in the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 input device main body 7 work suction unit 49 roller conveyor (conveying means) 51 work 57 optical sensor (first detection sensor) 59 optical sensor (second detection sensor) 71 control panel (control means)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical display location B65G 47/91 B65G 47/91 A B65H 29/24 B65H 29/24 D 29/58 29/58 C

Claims (3)

(57) [Claims] 1. A loading device main body which is constituted by a belt conveyor or a roller conveyor and is installed in the vicinity of a transporting device for transporting a work, and which is attached to the loading device main body and is parallel to a width direction orthogonal to a transport direction of the transporting device. A work suction unit provided so as to be able to ascend and descend a suction pad which is installed so as to be able to reciprocate in a desired direction and adsorbs and holds the work stacked and arranged in the vicinity of the transfer means; A work detecting means for detecting a work sucked and held by a suction pad when the work suction unit is moved forward, and a work detecting means mounted on the work suction unit for detecting the work sucked and held when the work suction unit returns. Detecting means for detecting the uppermost workpiece in the work, and the work suction unit based on a detection signal from the work detecting means. Control means for controlling the forward movement amount of the work and controlling the widthwise position of the work to be loaded on the transfer means and controlling the return movement amount of the work suction means based on a detection signal from the detection means. An input device characterized by comprising: 2. The loading device according to claim 1, wherein the work detection means includes a first detection sensor, and the work detection means is provided after the work sucked and held by the suction pad of the work suction unit by the first detection sensor. After the end is detected, the work suction unit is moved forward by a set amount and then stopped, and the work is loaded at the position, and the set amount is increased by a predetermined amount each time one work is loaded. Wherein the workpieces are loaded while being shifted by a predetermined amount in the width direction of the transfer means. 3. The loading device according to claim 2, wherein the work detection means includes a second detection sensor installed at a position closer to the forward movement direction of the work suction unit than the first detection sensor. The detection sensor detects the tip of the work sucked and held by the suction pad of the work suction unit, thereby stopping the shift of the position of the work 51 to the transfer means side further, and reducing the work amount to the first set amount. A dosing device characterized by being reset to return.