JPH04272037A - Article take-up device - Google Patents

Abstract

PURPOSE:To improve accuracy of detecting a position of lowering a taken-up member in an article take-up device. CONSTITUTION:Many sheets 1 are stored in a laminated condition in a container 5, and a take up device 6 is provided above the container 5. A vacuum sucker pad 17 is provided in a point end of a lift part 15A in a lift means 15 of the device 6 and also vertically arranging an actuator 21, having a straight advancing shaft 20, in the lift part 15A to provide a contact sensor 22 in a point end of the shaft 20 and a control means 26. When the lift means 15 is lowered by the control means 26 to place the sucker pad 17 to reach the sheet 1 in the uppermost part, simultaneously the sheet 1 is detected by the contact sensor 22 to stop the lift means 15 lowered simultaneously retracting the shaft 20 instantaneously. The sucker pad 17 is prevented from strongly pressing the sheet 1, and detecting accuracy in a lowering position of a taken-up member is improved.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to an article picking device,
In particular, the present invention relates to a position detection device for an article picking device.

0002

[Prior Art] In general, article pick-up devices are used for a variety of purposes, such as for feeding out sheet films such as X-ray imaging devices and automatic processing machines, or for feeding out cloth and boards. For example, they are used for punching out information storage cards. It is used for sheet feeding in equipment. Information storage cards such as telephone cards and orange cards are made of insulating material such as plastic or paper, and one side of the card is coated with a magnetic material that serves as the information storage section, and various information is stored on this coated surface. At the same time, the other side is surface-treated and has color printed areas with various designs, landscapes, or solid colors to increase its commercial value. In order to manufacture this type of card, color printing areas and information storage areas are formed at equal intervals on a single insulating sheet, corresponding to multiple parts that are to become a card, and the sheet that is this article is formed. are stored in a storage part in a stacked state, and a lifting means for raising and lowering a vacuum suction pad as a pick-up member is provided above the storage part, and a horizontal moving device for horizontally moving the lifting means is provided, and the suction pad is By lowering the suction pad, the sheet is attracted to the suction pad, and by raising the suction pad, the sheet is picked up from the storage section to a predetermined delivery position, and horizontally moved to feed it into the conveying device.At the same time, the vacuum is released, and the sheet is picked up by the conveying device. The cards are transferred to the processing position of a punch press machine, and are moved intermittently at regular intervals to punch out cards one after another.

0003

[Problems to be Solved by the Invention] In the above-mentioned conventional device, when the lifting means is lowered, the suction pad is controlled to stop its lowering when it reaches the uppermost sheet position that changes sequentially as the number of sheets decreases. Since this was done by controlling the fluid cylinder that constitutes the means, the fluid control device became complicated and the accuracy of stopping the suction pad from descending was low, causing the problem that the suction pad pressed too strongly against the sheet and the sheet was easily damaged. there were.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an article pick-up device that can solve the above-mentioned problems and improve the accuracy of detecting the lowered position of the pick-up member.

[0005]

[Means for Solving the Problems] In order to achieve the above object, the article picking up device of the present invention has a storage section and a lifting means provided above the storage section for lifting and lowering the picking up member, In the article picking up device, the picking up member is lowered to come into contact with the articles stored in a stacked state in the storage section, and the picking up member is raised to pick up the articles from the storage section,
The elevating part of the elevating means is provided with an actuator having a shaft that moves forward and backward in the vertical direction, and a contact sensor is provided at the tip of the shaft, and this contact sensor is approximately the same as the pick-up member when the shaft is in the extended state. The control means is located at a height, and is configured to include a control means for stopping the lowering of the elevating means and retracting the shaft based on the output of the contact sensor.

[0006]

[Operation] According to the above structure, when the pick-up member is lowered by the elevating means and comes into contact with the article in the advanced state of the shaft, the contact sensor detects the article and stops the descent of the pick-up member, and at the same time, the shaft having the contact sensor moves back. do.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 7, a sheet 1, which is an article, is made of an insulating material such as plastic or paper, and color printing parts are arranged in an arrangement pattern of 3 pieces x 8 pieces vertically and horizontally, corresponding to the parts that are to become cards. 2 are formed on the front surface at equal intervals, and an information storage section 3 is formed on the back surface. As shown in FIGS. 5 and 6, the uppermost sheet 1 of the sheet stack stored in a stacked state in a large number in a container 5, which is a storage section of the sheet feeding device 4, is picked up by the pick-up device 6, and the sheet conveying device 7, and during this conveyance route, a thickness sensor (not shown) detects erroneous feeding of two sheets, and at the time of this detection, the press is controlled to stop, and the sheet is positioned by a positioning device (not shown). The sheet 1 conveyed by the sheet conveying device 7 is intermittently transported to a punching position at equal intervals by a front roller 10 and a rear roller 11 arranged before and after the punching die 9, and is punched one after another. , the punched cards are stored in a product storage container (not shown),
The residue portion is stored in a scrap storage section 12. In the sheet feeding device 4, as shown in FIGS. 1 to 4, a large number of sheets 1 are stored in a stacked state in a container 5, and this sheet stack is lifted by a lift 13 made of a cylinder or the like as necessary. It looks like this. In this case, the number of sheets 1 in the container 5 is shown decreasing. A sheet delivery detection sensor 14 is provided on the transfer start end side of the conveyor belt 8, and an elevating means 15 consisting of a pneumatic or hydraulic cylinder or the like is provided vertically above the container 5. A vacuum suction pad 17 is provided at the tip of the elevating section 15A through a mounting member 16, and a vacuum pump (not shown) is connected to this suction pad 17. Further, the elevating means 15 is horizontally moved toward the conveyor belt 8 via a rail (not shown) by a horizontal moving device 18 such as a cylinder. The position detection device 19 includes an actuator 21 having a linear shaft 20 such as a pneumatic cylinder, a hydraulic cylinder, or an electromagnetic solenoid, and a contact sensor 2 at the tip of the shaft 20.
2 is provided. The actuator 21 is installed vertically and integrally with the elevating section 15A of the elevating means 15, and is configured such that the contact sensor 22 is at approximately the same height as the suction pad 17 when the shaft 20 is in the advanced state, that is, in the descending state. are doing. The contact sensor 22 turns on a limit switch 25 in a plastic cylindrical body 24 when a plastic ball 23 contacts the sheet 1, for example.
It is configured to operate and output a detection signal to the control means 26. The control means 26 outputs an output from the contact sensor 21 when the contact sensor 21 comes into contact with the sheet 1 when the suction pad 17 reaches a position suitable for suctioning the uppermost sheet 1 due to the lowering of the elevating means 15. In response to the signal, the lifting means 15 is stopped, and at the same time, the shaft 20 is instantaneously retreated via a switching means 27 such as a switching valve or a relay, and the lifting section 15A is further raised to operate the horizontal moving means 18. . Further, the control means 26 releases the vacuum when the sheet delivery detection sensor 14 detects that the sheet 1 has been fed onto the conveyor belt 8, and when the completion of the feeding is detected, lowers the elevating section 15A to release the vacuum. Control to supply.

Next, the operation of the above structure will be explained.

When the start switch is turned on, the suction pad 17 is lowered together with the contact sensor 22 in the axis-extended state due to the lowering operation of the lifting means 15, and the suction pad 17 is properly attached to the uppermost sheet 1 in the container 5. When the ball 23 of the contact sensor 22 contacts the seat 1 at the same time, the limit switch 25 turns on and outputs a detection signal, the lifting means 15 stops, and the shaft 20 of the actuator 21 also contacts the seat 1 via the switching means 27. Instantly retreats or rises. Next, the sheet 1 attracted to the suction pad 17 is lifted by the elevating means 15 and horizontally moved by the horizontal movement device 18, and the sheet 1 is fed onto the conveyor belt 8.
When the sheet feeding detection sensor 14 detects that the sheet conveying device 7 has started feeding the sheet 1, the vacuum of the suction pad 17 is released, the horizontal feeding device 18 returns, and it is detected that feeding has been completed. and lifting means 15
descends and repeats the same action. In this manner, the sheets 1 are conveyed one after another to the processing position, where they are intermittently conveyed by the front and rear rollers 10 and 11, and cards are punched out one after another by the punching die 9 in units of three.

As described above, in the above embodiment, the position detection device 19 is constructed using an actuator 21 having a linear shaft 20, and a contact sensor 22 is provided at the tip of the shaft 20, and the position detection device 19 is configured using an actuator 21 having a linear shaft 20. , the actuator 21 is moved to the elevating section 15 of the elevating means 15 so that the contact sensor 22 is at approximately the same height as the suction pad 17.
A, and the control means 26 controls the contact sensor 2 at the same time that the suction pad 17 contacts the sheet 1 in an appropriate state when the elevating means 15 is lowered.
2 detects the sheet 1 and uses this signal to control the shaft 20 to instantaneously retreat at the same time as the elevating means 15 is stopped. Because the configuration accurately detects and stops the descent of the suction pad 17 appropriately, there is no need for a complicated fluid control device as in the past, and moreover, it prevents the suction pad 17 from pressing strongly against the sheet 1 and damaging the sheet 1. It can be prevented. Furthermore, when the sheet 1 is picked up, the contact sensor 22 is moved backward or raised, which solves the problem of the sensor being rubbed against the sheet 1 and being damaged when the sheet 1 is fed out. The contact sensor 22 can also be placed in correspondence with a portion that cannot be damaged, such as the portion 3, and the restriction on the installation space of the position detection device is also eliminated.

It should be noted that the present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the present invention. For example, the article described is a sheet for punching out information storage cards, but the invention is not limited to this, and examples include items that cannot be scratched, such as X-ray film, various sheets with printed parts, cloth, boards, etc. The present invention can be applied to various types of take-out devices such as not only punching devices but also packaging machines.

[0013]

Effects of the Invention The present invention has a storage section and an elevating means provided above the storage section for lifting and lowering the pick-up members, and the pick-up members are lowered and stored in the storage section in a stacked state. In the article picking device, the article is brought into contact with the loaded article and picked up from the storage section by raising a picking member,
The elevating part of the elevating means is provided with an actuator having a shaft that moves forward and backward in the vertical direction, and a contact sensor is provided at the tip of the shaft, and this contact sensor is located approximately at a height of approximately the same height as the pick-up member when the shaft is in the advanced state. The device is configured to be provided with a control means that is located at the top and stops the lowering of the elevating means and moves the shaft back based on the output of the contact sensor, and the simple structure improves the detection accuracy of the lowered position of the pick-up member. can be improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic explanatory diagram of an article retrieval device showing an embodiment of the present invention.

FIG. 2 is a schematic explanatory diagram showing the operating state of the position detection device.

FIG. 3 is a schematic explanatory diagram showing the operating state of the position detection device.

FIG. 4 is a schematic explanatory diagram showing the operating state of the position detection device.

FIG. 5 is an overall plan view of the punch press device.

FIG. 6 is an overall front view of the punch press device.

FIG. 7 is a plan view of the sheet.

[Explanation of symbols]

1 Sheet (article) 5 Container (storage section) 6 Pick up device 15 Lifting means 15A Lifting section 17 Suction pad (pickup member) 20 axis 21 Actuator 22 Contact sensor 26 Control means

Claims (1)

[Claims] 1. A storage section, and an elevating means provided above the storage section for raising and lowering a pick-up member, wherein the pick-up member is lowered and the articles stored in the storage section are stacked. In the article pick-up device, in which the article is picked up from the storage section by bringing the article into contact and raising the pick-up member, an actuator having a shaft that advances and retreats in the vertical direction is provided in the elevating section of the elevating means, and the tip of the shaft is provided with a contact sensor, which is located at approximately the same height as the pick-up member when the shaft is in the advanced state, and uses the output of the contact sensor to stop the lowering of the elevating means and to move the shaft back. An article pick-up device characterized in that it is configured to include a control means for controlling the object.