JP2015150622A - Suction device, suction member, and method for detecting damage of suction member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suction device and the like capable of simply and surely detecting damage of a suction member without a significant change in design.SOLUTION: A suction device includes: a funnel-shaped suction member 23 which has an opening 23a to suck external air and suck a workpiece 2 and a conducting wire 27 to detect damage by being disconnected around the opening 23a; detection means 29 for detecting disconnection of the conducting wire 27; and notification means 28 for notifying the damage of the suction member 23 to the outside when detecting the disconnection of the conducting wire 27.

Description

  The present invention relates to a suction device, and more particularly to a suction member with a breakage detection device that detects breakage of a suction member used in the suction device.

  2. Description of the Related Art Conventionally, an adsorption device for adsorbing and conveying a conveyed product in various fields is known (see, for example, Patent Document 1).

  The product mounting apparatus shown in Patent Document 1 includes a suction nozzle having an opening communicating with the outside at one end, and sucks an electronic component by sucking external air from the opening.

  Since such a suction nozzle may cause a suction failure due to clogging or the like due to repeated use, it is necessary to check the suction nozzle. Therefore, this product mounting apparatus photographs the lower end surface of the suction nozzle, and the suction nozzle is determined to be defective based on the photographed image.

  In addition, a rubber suction member that can be elastically deformed is used as a general suction pad for sucking a workpiece. However, this type of suction member is repeatedly used to cause damage or the like. Early detection is indispensable because defective products are generated due to falling products caused by defective adsorption.

JP-A-10-154899

  In the apparatus shown in Patent Document 1, a camera for photographing the lower end surface of the suction nozzle and a space for installing the camera are required, and a system for matching images is necessary. Manufacturing costs will increase.

  Accordingly, the present invention has been made with the above problem as an example of an object, and it is an object of the present invention to provide a suction device and the like that can easily and reliably detect breakage of a suction member without making a significant design change.

  In order to solve the above problems, the present invention employs the following configuration.

  That is, the adsorbing member (23) according to claim 1 is a funnel-shaped adsorbing member having an opening (23a) for sucking outside air and adsorbing the work (2), and is provided around the opening. Is characterized in that a conductor (27) is provided for detecting breakage due to disconnection.

  Further, the suction device (K) according to claim 2 has an opening for sucking outside air and sucking the workpiece, and a conductor for detecting breakage due to disconnection is provided around the opening. A funnel-shaped adsorbing member, a detecting means (29) for detecting disconnection of the conducting wire, and an informing means (28) for notifying the outside of the adsorbing member when the breaking of the conducting wire is detected. It is characterized by.

  According to a third aspect of the present invention, there is provided the suction device according to the second aspect, wherein the suction member is elastically deformed.

  According to a fourth aspect of the present invention, there is provided the suction device according to the second or third aspect, wherein a plurality of the conducting wires are provided concentrically.

  According to a fifth aspect of the present invention, there is provided a method for detecting breakage of a suction member, wherein a lead wire is provided around an opening of a funnel-shaped suction member having an opening for sucking outside air and sucking a workpiece, By detecting it, the breakage of the adsorption member is detected.

  According to the present invention, it is easy to manufacture and it is possible to easily detect the breakage of the adsorption member.

It is a schematic diagram of an example of a paper feed unit provided with a suction device. FIG. 2A is a schematic diagram illustrating a front view, and FIG. 2B is a schematic diagram illustrating a bottom view. It is a schematic diagram which shows an example of a sensor circuit. FIG. 4A is a schematic diagram illustrating a damage example due to breakage, and FIG. 2B is a schematic diagram illustrating a damage example due to a crack. It is a schematic diagram which shows the structural example of the adsorption | suction apparatus provided with the several adsorption | suction member. It is a schematic diagram which shows the structural example of the adsorption | suction member of other embodiment.

  Hereinafter, a typical embodiment of the present invention will be described with reference to the drawings.

  As an example, the suction device K of the present invention is used as one component of the paper feeding unit 10 that feeds the printing book 2 in the bookbinding device. Note that the present invention is not limited to the present embodiment, and is applicable to all suction devices that suck workpieces. Further, the workpiece is not limited to paper, and may be in any form such as an electronic component.

  As shown in FIG. 1, the paper feeding unit 10 of the present embodiment is disposed below the booklet holder 11 for collecting and holding the booklet 2, and is driven to rotate clockwise. Rotating drum 13, suction device K that sucks the book 2 stored in the book storage portion 11, and delivery of the book 2 sucked by the suction device K to the peripheral surface of the rotating drum 13. A mechanism portion 15 and a gripper 17 that clamps the front end portion of the printing book 2 disposed on the peripheral surface of the rotary drum 13 between the peripheral portion of the rotary drum 13 are provided.

  The printing book container 11 includes a mounting body 12 on which a plurality of printing books 2 can be stacked. In addition, although not shown, a frame body is provided around the placement body 12 so as to be positioned so that at least the front and both sides of the printing book 2 placed on the placement body 12 are positioned. The mounting body 12 has a space part below one end of the printing book 2, and the lowermost printing book 2 can be pulled out from the space part by the suction device K.

  The suction device K is supported by the delivery mechanism unit 15. The delivery mechanism unit 15 includes a support 16 that supports the suction device K, and the support 16 is rotatably attached to a frame (not shown) as indicated by a two-dot chain line in the drawing. Then, after adsorbing the back side of the lowermost book body 2 of the bundle of the book bodies 2 accommodated in the book body accommodating body 11 by the adsorbing device K, the support body 16 is displaced (rotated) downward and printed. The back side of the book 2 is moved to the peripheral surface of the rotary drum 13.

  The printing book 2 sucked by the suction device K is gripped by the gripper 17. The gripper 17 is rotatably attached to the rotary drum 13, and can hold or release the printing book 2 with the peripheral surface of the rotary drum 13 by rotating forward or backward. The gripper 17 grips the end of the back side of the book 2 and rotates the rotary drum 13 as indicated by the arrow in the drawing, thereby pulling out the book 2 from the book holder 11 and feeding it.

  As described above, in the paper supply unit 10 of the present embodiment, the printing book 2 stored in the printing book container 11 is sucked by the suction device K and transferred to the rotating drum 13 by the transfer mechanism unit 15. The printing book 2 delivered to the rotary drum 13 is gripped by the gripper 17 and is fed about half a turn from the upper position of the rotary drum 13 by the rotation of the rotary drum 13. Thereafter, the printing book 2 is released from the gripper 17 and transferred to a conveyance path (not shown) disposed below the rotary drum 13. In this way, in the paper supply unit 10, the printing book 2 stored in the printing book container 11 is supplied.

  As shown in FIG. 2, the suction device K includes a base 21 having a suction nozzle 21 a that sucks air, and an opening 23 a that is attached to the distal end side of the base 21, takes in external air, and sucks a workpiece. And a notifying device 25 that detects the damage of the suction member 23 and notifies the outside that the damage has occurred. The suction nozzle 21a is connected to, for example, a vacuum pump (not shown), and external air is sucked from the opening 23a of the suction member 23 through the suction nozzle 21a as shown by an arrow in FIG. 2 by driving the vacuum pump. The

  In addition, the opening part of this application shall mean the peripheral part of the adsorption | suction member 23 containing the opening 23a of this embodiment.

  The adsorbing member 23 has a distal end so that the diameter of the adsorbing member 23 is larger than the outer diameter of the base body 21 through a tapered portion 24 that is expanded in a tapered shape (conical shape) from a base end portion substantially equal to the outer diameter of the base body 21. It is formed in a funnel shape whose diameter is gradually increased toward the part. The inner cylinder part 31 functions as a suction hole part communicating with the suction nozzle 21a, and external air is sucked from the opening 23a of the suction member 23 through the inner cylinder part 31 and the suction nozzle 21a by driving the vacuum pump. . The printing book 2 is adsorbed to the opening 23a of the adsorbing member 23 by the suction force.

  The adsorbing member 23 is formed of, for example, a rubber elastic member, and is elastically deformed. The material of the suction member 23 can be appropriately changed depending on the nature of the workpiece to be sucked, and may be formed of, for example, a metal or resin member that does not elastically deform.

  The notification device 25 includes a conducting wire 27 for detecting breakage such as breakage and cracking of the adsorption member 23, a notification body 28 (notification means of the present application) such as a buzzer and a lamp for notifying that damage has occurred outside, And a sensor circuit 29 that operates the notification body 28 when the disconnection of the conductor 27 is detected. The sensor circuit 29 includes a power supply X for notifying the notification body 28. The conducting wire 27 is electrically connected to a notification body 28 including a sensor circuit 29 via the connector 20.

  As shown in FIG. 3, the conducting wire 27 and the notification body 28 used for disconnection detection are electrically connected by a sensor circuit 29 as detection means of the present application. The sensor circuit 29 manages whether or not the conducting wire 27 is disconnected. For example, when the conducting wire 27 is not disconnected (when a constant current flows) using the B contact photorelay, When the power source X is electrically disconnected and the conductive wire 27 is disconnected (when the current value is below a certain level), the notification body 28 and the power source X are energized to operate the notification body 28.

  As shown in FIG. 4, the adsorbing member 23 is torn 51 and cracks 52 due to wear due to repeated use. The tear 51 and the crack 52 cause poor adsorption due to air leakage. The tear 51 and the crack 52 are particularly likely to occur at the tip of the suction member 23 that comes into contact with the workpiece. Moreover, the conducting wire 27 is easily cut and disconnected by an external force such as the break 51 or the crack 52. Therefore, in the present embodiment, as shown in FIG. 2B, the conducting wire 27 is provided around the distal end portion (around the opening) of the adsorption member 23. Further, since the attracting member 23 is liable to be broken 51 or crack 52 by rubbing the back side due to contact with the workpiece, the conductive wire 27 is preferably along the back surface (inner surface) of the attracting member 23 in contact with the workpiece. Arranged.

  In addition, when the adsorption | suction member 23 does not elastically deform, it is preferable that the conducting wire 27 is arrange | positioned around the front-end | tip of the opening 23a. On the other hand, when the adsorbing member 23 is elastically deformed, as shown in FIG. 2, it is not always necessary to dispose the conducting wire 27 at the tip of the opening 23a, and it may be disposed slightly inside depending on the amount of deformation. Absent. Further, in the process of manufacturing the suction member 23, the lead wire 27 may be provided inside the suction member 23 so as not to be exposed to the outside.

  Here, the damage detection operation of the suction member 23 using the sensor circuit 29 will be described.

  As shown in FIG. 1, the suction device K sucks the printing book 2 and repeats the operation of delivering the printing book 2 to the rotary drum 13 by the operation of the delivery mechanism unit 15. In the initial operation, when the attracting member 23 is not worn, the conducting wire 27 is not disconnected, and a constant current flows through the conducting wire 27, so that the notification body 28 and the power source X are electrically connected by the sensor circuit 29. It is cut | disconnected and the alerting | reporting body 28 does not operate | move.

  On the other hand, as shown in FIG. 4, when the tip of the suction member 23 is broken due to wear or the like and a crack 52 is generated due to the use of the suction device K, a part of the conducting wire 27 is cut and disconnected. In this case, since the current value is below a certain value (current value is 0), the sensor body 29 energizes the notification body 28 and the power source X to operate the notification body 28, and the suction member 23 is externally exposed by sound or light. Announces that is damaged.

  As described above, in the suction device K of the present embodiment, when the tearing member 51 or the crack 52 is generated in the suction member 23 and the conducting wire 27 is disconnected, the sensor circuit 29 can easily detect the breakage of the suction member 23. Furthermore, the notification body 28 is operated to notify the outside that it has been damaged.

  Normally, the suction device K includes a plurality of suction members 23A to 23C. For example, as shown in FIG. 5, a buzzer B that functions as a notification body 28, and a lamp L1 corresponding to each suction member 23A to 23C. -The housing | casing 50 to which L3 was attached is provided. A substrate having a sensor circuit 29 is provided inside the housing 50 and is electrically connected to the conductive wires 27 of the suction members 23A to 23C.

  And when the conducting wire 27 of each adsorption | suction member 23A-23C is cut | disconnected, the lamp | ramp L1-L3 corresponding to the adsorption | suction member 23A-23C in which the said conducting wire 27 is arrange | positioned is turned on, respectively, and the buzzer B is sounded.

  If it does in this way, each breakage of a plurality of adsorption members 23A-23C can be detected easily and can be grasped.

  Next, other embodiment of the conducting wire arrange | positioned at an adsorption | suction apparatus is described. In addition, the conducting wire 27 arranged in the above-described adsorption device K is in the form in which one conducting wire 27 is arranged around the inside of the opening of the adsorption member 23, whereas it is arranged in the adsorption device of the present embodiment. As shown in FIG. 6, a plurality of conductors 27 (for example, three 27a to 27c) are provided concentrically so as to indicate the degree of breakage at each stage. That is, for example, three conductors 27a to 27c are provided concentrically to represent the degree of breakage in three stages, and when the outermost conductor (outer) conductor 27a closest to the tip is cut, When the light is turned on and the central conducting wire 27b is cut, yellow light is turned on by the lamp, and when the innermost (inner) conducting wire 27c is cut, the lamp blinks red light. The lighting mode of light may be changed according to the degree of damage.

  In general, if it is elastically deformed, even if some wear of the tip portion occurs, air leakage does not occur when the work is adsorbed, and there is no problem in use. This is convenient because the damage management of the suction member 23 can be easily performed.

  As described above, the suction device K according to the present embodiment is provided with the conducting wire 27 around the tip (opening 23a) of the attracting member 23, and operates the notification body 28 when the breaking of the conducting wire 27 is detected. Thus, it is possible to reliably detect the damage of the suction member 23 and notify the outside.

  In addition, this invention is not limited to the said embodiment, A various change is possible within the range of the summary of this invention. For example, in the suction device K, the base 21 and the suction member 23 are formed as separate bodies, but may be formed integrally. In addition, the notification body 28 is an example, and it is not an essential constituent requirement, and it may be displayed on the display body separately.

K Suction Device 2 Book 23a Opening 27 Conductor 28 Notification Body 29 Sensor Circuit

Claims (5)

A funnel-shaped adsorbing member having an opening for sucking outside air and adsorbing a workpiece,
A suction member characterized in that a conductor for detecting breakage due to disconnection is provided around the opening. A funnel-shaped adsorbing member having an opening for sucking outside air and adsorbing a work, and a conductor for detecting breakage due to disconnection around the opening,
Detecting means for detecting disconnection of the conducting wire;
Informing means for informing the outside of damage of the adsorption member when the disconnection of the conducting wire is detected,
An adsorption apparatus comprising:   The suction device according to claim 2, wherein the suction member is elastically deformed.   The suction device according to claim 2, wherein a plurality of the conductive wires are provided concentrically.   It is possible to detect breakage of the suction member by providing a lead wire around the opening of the funnel-like suction member having an opening for sucking outside air and sucking the workpiece, and detecting disconnection of the lead. A method for detecting breakage of a suction member.

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