JP2014233743A - Work-piece transport device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stably determine a position of a work-piece before reversing.SOLUTION: A work-piece transport device 1 comprises: a rotation drum 2 for passing a work-piece 7 stored in a storage part 2a, by inverting the top and bottom of the work-piece 7, to a conveyor 3; and an adsorption mechanism 5 for adsorbing the work-piece 7 inside the storage part 2a when the work-piece 7 is stored in the storage part 2a.

Description

  The present invention relates to a workpiece transfer device capable of turning a workpiece upside down.

  Japanese Patent Application Laid-Open No. H10-228561 discloses a workpiece transfer device including a reversing mechanism that reverses the workpiece upside down.

JP 2002-104642 A

  When reversing the workpiece upside down using the reversing mechanism, if the reversing mechanism receives the workpiece from the previous process, the workpiece is misaligned and the workpiece is caught when the reversing mechanism is activated, causing the device to stop. Or the work that was caught was damaged.

  The present invention has been made in view of such technical problems, and an object of the present invention is to stably determine the position of a workpiece before reversal.

  According to an aspect of the present invention, there is provided a work transfer device, the reversing mechanism for reversing the top and bottom of the work housed in the housing portion and delivering it to a predetermined position, and when the work is housed in the housing portion, There is provided a workpiece transfer device comprising a suction mechanism for sucking a workpiece in the housing portion.

  According to the above aspect, since the work is sucked and held by the suction mechanism when the work is housed in the housing portion of the reversing mechanism, the position of the work before reversing can be determined stably. Therefore, it is possible to prevent the work from being caught when the reversing mechanism is operated and the apparatus from being stopped, or from being caught to be damaged.

It is a side surface schematic diagram which shows the workpiece conveyance apparatus which concerns on embodiment of this invention. It is a plane schematic diagram which shows the workpiece conveyance apparatus which concerns on embodiment of this invention.

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

  FIG. 1 is a schematic side view showing a workpiece transfer apparatus according to an embodiment of the present invention. FIG. 2 is a schematic plan view showing the workpiece transfer device according to the embodiment of the present invention.

  The work transfer device 1 includes a rotating drum 2, a conveyor 3, an air blowing mechanism 4, and a suction mechanism 5.

  The rotating drum 2 is a drum in which two discs 21 are connected to both ends of a rotating shaft 22 and is driven by a motor (not shown).

  A plurality of cutouts 21a are formed at equal intervals on the outer periphery of the disc 21, and the two discs 21 are connected to the rotary shaft 22 so that the positions of the cutouts 21a formed in each are in phase. Is done. Here, the two notches 21 a facing each other arranged in the same phase constitute an accommodating portion 2 a that accommodates the workpiece 7 received from the press molding apparatus 6. The work 7 is an inner fin of a heat exchanger obtained by press-molding a metal plate.

  The conveyor 3 is provided on the downstream side of the rotating drum 2 in the conveying path of the work 7 and conveys the work 7 received from the rotating drum 2 to the next process.

  The rotary drum 2 delivers the work 7 to the conveyor 3 at a position that is substantially half-rotated in the direction of the arrow shown in FIG. Thereby, the workpiece | work 7 can be delivered to the conveyor 3 in the state upside down with respect to the state which the press molding apparatus 6 press-molded.

  In this way, by turning the work 7 upside down, for example, if the cutting part of the work 7 is oriented so as not to contact the conveyor 3, the work 7 can be prevented from being drawn into the movable part of the conveyor 3.

  On the upper side of the rotating drum 2, a first guide 8 having an inner arc shape is provided so that the work 7 accommodated in the accommodating portion 2 a does not jump out when the rotating drum 2 rotates.

  The end of the first guide 8 on the press molding apparatus 6 side is located above the accommodating portion 2a so that the workpiece 7 is not caught by the upper corner of the opening of the accommodating portion 2a when the workpiece 7 is accommodated in the accommodating portion 2a. It is formed so that it protrudes from the corners. Further, as shown in FIG. 2, the width of the first guide 8 is a width that fits inside the two discs 21, and the radius from the center of the rotating drum 2 is gradually reduced at the end on the conveyor 3 side. Formed to be. Thereby, the rattling of the work 7 in the accommodating portion 2a is restricted, and the accuracy of the position where the work 7 is transferred from the rotary drum 2 to the conveyor 3 is increased.

  Between the rotary drum 2 and the press molding apparatus 6, second guides 9 are respectively provided on both outer sides of the rotary drum 2.

  The second guide 9 is formed with an inclined surface 9a facing downward toward the housing portion 2a, and the workpiece 7 is cut from the material by the cutting blade 6a of the press molding device 6 above the second guide 9. The width of the work 7 is equal to or greater than W1 shown in FIG. 2, and the work 7 cut from the material falls to the inclined surface 9a so that both ends are hooked on the two second guides 9, and slides down the inclined surface 9a as it is. And accommodated in the accommodating portion 2a. In addition, the position of the accommodating part 2a at this time is a reference position for receiving the workpiece 7 from the press molding apparatus 6.

  The air blowing mechanism 4 is provided above the position where the workpiece 7 is cut from the material.

  The air blowing mechanism 4 receives an operation signal from the press molding device 6 and blows air downward on the work 7 at a timing when the work 7 is cut from the material.

  As described above, the workpiece 7 is a metal press-formed product. Therefore, when the workpiece 7 is cut from the material, distortion may occur in the cut portion, and the workpiece 7 may be tilted and dropped. In such a case, since the workpiece 7 cannot be accommodated in the accommodating portion 2a or is accommodated while being tilted in the accommodating portion 2a, the worker corrects each time, and the production efficiency decreases. End up.

  On the other hand, in this embodiment, the work 7 can be forcibly dropped onto the inclined surface 9a by blowing air downward on the work 7 at the timing when the work 7 is cut from the material. It can be moved toward the housing portion 2a with the force of blowing air. Thereby, since the workpiece | work 7 can be stably accommodated in the accommodating part 2a, production efficiency can be improved.

  The suction mechanism 5 is a negative pressure generating mechanism including a plurality of suction nozzles 5a. When the storage portion 2a is at the reference position, the workpiece 7 stored in the storage portion 2a and the suction nozzle 5a are located close to each other. Provided.

  The suction mechanism 5 sucks the workpiece 7 that has moved to the housing portion 2a with the suction nozzle 5a and holds it in the housing portion 2a.

  Since the workpiece 7 cut from the material slides down the inclined surface 9a of the second guide 9 and moves to the accommodating portion 2a, the workpiece 7 bounces off from the accommodating portion 2a with a momentum of dropping or stops in a misaligned state. It is possible to do. However, as described above, the work 7 is sucked by the sucking mechanism 5 to prevent the work 7 from being rebounded or displaced due to the momentum of dropping, and the work 7 can be held at a stable position. it can.

  The suction nozzle 5 a is provided between the two disks 21 and on both outer sides of the two disks 21. For example, as shown in FIG. 2, when the width of the workpiece 7 is W1, the workpiece 7 is stably held by sucking the workpiece with the two suction nozzles 5a provided between the two disks 21. it can. When the width of the workpiece 7 is W2 larger than W1, the workpiece 7 is sucked by the four suction nozzles 5a including the suction nozzles 5a provided on both outer sides of the two disks. It can be held stably.

  Also, enrollment sensors 10 that output detection signals when the work 7 is housed in the housing portion 2a when the housing portion 2a is at the reference position are provided on both outer sides of the two disks 21, respectively. The enrollment sensor 10 is, for example, a proximity sensor.

  When the workpiece 7 is accommodated in the accommodating portion 2a and the two enrollment sensors 10 output detection signals, the rotary drum 2 rotates so that the accommodating portion 2a that accommodates the next workpiece 7 is at the reference position. Here, when only one enrollment sensor 10 outputs a detection signal, it is considered that the workpiece 7 is housed in an inclined state, so the rotating drum 2 does not operate.

  At this time, even if the two enrollment sensors 10 output detection signals, if the workpiece 7 is bounced back with the momentum of dropping thereafter, the rotating drum 2 rotates to cause the workpiece 7 to fall from the accommodating portion 2a. Or may be sandwiched between the first guide 8 and the rotating drum 2.

  In such a case, even if the two enrollment sensors 10 output detection signals, the rotating drum 2 is not immediately rotated. For example, if the detection signal output from the enrollment sensor 10 continues for a certain period of time, the rotating drum 2 is turned off. Processing such as rotation is required, and production efficiency is reduced.

  On the other hand, in the present embodiment, by providing the suction mechanism 5, it is possible to prevent the workpiece 7 from bouncing back and slipping due to the momentum of dropping, so that the workpiece 7 rotates with the first guide 8. It is not pinched between the drum 2. Therefore, after the enrollment sensor 10 detects the workpiece 7, the rotating drum 2 can be immediately rotated, so that the production efficiency can be improved.

  Subsequently, the operation of the workpiece transfer apparatus 1 will be described in order from the upstream side of the workpiece transfer path.

  First, the workpiece 7 formed by the press forming apparatus 6 is cut from the material at the upper part of the second guide 9.

  At this time, the air blowing mechanism 4 blows air downward toward the work 7. The work 7 sprayed with air falls on the inclined surface 9 a of the second guide 9.

  The workpiece 7 that has fallen on the inclined surface 9 a slides down the inclined surface 9 a as it is with the force of air blown, and moves to the accommodating portion 2 a of the rotating drum 2.

  When the workpiece 7 moves to the housing portion 2a, the suction mechanism 5 sucks and holds the workpiece 7.

  In this state, the two enrollment sensors 10 detect the workpiece 7 and the rotating drum 2 rotates. The work 7 is pulled away from the suction mechanism 5 when the rotary drum 2 rotates. Although the suction mechanism 5 always generates a negative pressure, the strength of the negative pressure is set so that the workpiece 7 is not damaged when it is separated from the suction mechanism 5.

  The work 7 is transferred to the conveyor 3 in a state in which the upper and lower sides are reversed from the state in which the press molding device 6 is press-molded when the rotary drum 2 is substantially half-rotated, and is conveyed to the next process by the conveyor 3.

  According to the above aspect, when the workpiece 7 is accommodated in the accommodating portion 2a of the rotary drum 2, the workpiece 7 is attracted and held by the adsorption mechanism 5, so that the workpiece 7 rebounds or slips due to the falling moment. It is possible to stably determine the position of the work 7 before the rotary drum 2 rotates. Therefore, it is possible to prevent the workpiece 7 from being caught when the rotating drum 2 is rotated and the apparatus from being stopped, or the caught workpiece 7 from being damaged.

  Moreover, since the rotary drum 2 can be rotated immediately after the enrollment sensor 10 detects the workpiece 7, the production efficiency can be improved.

  Further, by blowing air downward onto the workpiece 7 at the timing when the workpiece 7 is cut from the material by the air blowing mechanism 4, the workpiece 7 can be forcibly dropped onto the inclined surface 9a. It can be moved toward the accommodating portion 2a with the sprayed momentum. Thereby, since the workpiece | work 7 can be stably accommodated in the accommodating part 2a, production efficiency can be improved.

  As mentioned above, although embodiment of this invention was described, the said embodiment showed only a part of application example of this invention, and is not the meaning which limits the technical scope of this invention to the specific example of said embodiment. .

  For example, in the above embodiment, the workpiece 7 is an inner fin of a heat exchanger, but it may be an outer fin.

  Further, although the suction mechanism 5 constantly generates a negative pressure, the generation of the negative pressure may be stopped in accordance with the timing at which the rotary drum 2 rotates.

1 Work transfer device 2 Rotating drum (reversing mechanism)
2a Housing 3 Conveyor 4 Air blowing mechanism 5 Suction mechanism 7 Workpiece (metal plate, inner fin, outer fin)
9 Second guide (guide member)
9a Inclined surface 10 Enrollment sensor (detection means)

Claims (7)

A workpiece transfer device,
A reversing mechanism for reversing the top and bottom of the work housed in the housing part and delivering it to a predetermined position;
An adsorbing mechanism for adsorbing the work in the accommodating part when the work is accommodated in the accommodating part;
A workpiece transfer device comprising: It is a workpiece conveyance apparatus of Claim 1, Comprising:
The reversing mechanism is a rotating drum.
A workpiece transfer device. It is the workpiece conveyance apparatus of Claim 1 or 2, Comprising:
The predetermined position is a conveyor disposed on the downstream side of the reversing mechanism in the transport path of the workpiece.
A workpiece transfer device. It is the workpiece conveyance apparatus in any one of Claim 1 to 3,
An air blowing mechanism is provided on the upstream side of the reversing mechanism in the transport path of the work to blow air onto the work so that the work moves toward the housing portion.
A workpiece transfer device. It is a workpiece conveyance apparatus in any one of Claim 1 to 4,
Comprising a detecting means for detecting that the workpiece is accommodated in the accommodating portion;
A workpiece transfer device. It is a workpiece conveyance apparatus in any one of Claim 1 to 5,
Provided with a guide member formed with an inclined surface that guides the movement of the workpiece to the accommodating portion on the upstream side of the reversing mechanism in the workpiece conveyance path,
A workpiece transfer device. It is a workpiece conveyance apparatus of Claim 6, Comprising:
The workpiece is a metal plate cut above the guide member.
A workpiece transfer device.

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