JP2007268683A - Erroneous assembling preventive method for component - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for preventing defluxion of products after setting when an inspection for assembling of a component and an erroneous assembling is determined. <P>SOLUTION: In the erroneous assembling preventive method, after a read operation with a bar code label for the specification of a cover lower for a right handle is performed by a bar code reader 16, it is set on an inspection base 11, an inspection start button 27 is pressed. When only a right handle product detection sensor 26 detects, a personal computer 14 for specification inspection operates a locking mechanism 23 for the right handle to lock it. Afterwards, a CCD camera 32 images a color distinguishing part and a switch unit of the cover lower for the right handle. The personal computer 14 for specification inspection allows an image processing controller to perform a matching of a specification master of the cover lower for the right handle with the image to be imaged by making the bar code to be read as a key. When it is rejected, a QR code for releasing is read out with a QR code reader of a manager to be able to release the locking state. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a method for preventing erroneous assembly of components when the components are attached to a product.

As a method for preventing erroneous assembly of components, for example, in Patent Document 1, when the detection device detects an incorrect assembly order, control is performed so that the work line is stopped, or the operator is notified of this. Although the technology is disclosed, it is general that after attaching the part to the product, the worker confirms whether the product produced is misassembled by comparing with the specification.
JP 2002-331427 A

  However, it is necessary for the operator to check whether or not there is an improper assembly. As described above, there is a problem that a product that is incorrectly assembled is a defective product, and that a defective product is produced when the misassembled product is assembled to another product.

  Therefore, the present invention can inspect whether or not there is an incorrect assembly when an operator assembles a part into a product, and prevents such an erroneous assembly from flowing out when such an erroneous assembly is determined. For the purpose.

For this reason, the first invention is a method for preventing erroneous assembly of components when the components are attached to a product.
An operator reads an identification table indicating the specifications of the product attached to the product to which the part is attached with a reader,
When the product is set on the inspection table and the inspection start switch is operated to detect only the product detection device corresponding to the product, the corresponding lock mechanism is activated to lock and hold the product,
A detection switch detects the presence or absence of the part attached to the product after the lock;
When the detection switch detects that the part is attached, the lock by the lock mechanism is released,
When the detection switch detects that the component is not attached, the lock is maintained, and the lock is released by the lock mechanism by a special operation performed by an administrator of an operator. .

The second invention is a method for preventing erroneous assembly of parts when attaching the parts to a product.
An operator reads an identification table indicating the specifications of the product attached to the product to which the part is attached with a reader,
When the product is set on the inspection table and the inspection start switch is operated to detect only the product detection device corresponding to the product, the corresponding lock mechanism is activated to lock and hold the product,
After the lock, the camera images the product,
Matching the captured image with the product specification master obtained using the content read by the reader as a key,
If it passes, the lock by the lock mechanism is released, and if it fails, the lock is maintained and the lock by the lock mechanism is released by a special operation performed by an administrator of an operator. And

The third invention is a method for preventing erroneous assembly of parts when attaching the parts to a product.
An operator reads an identification table indicating the specifications of the product attached to the product to which the part is attached with a reader,
When the product is set on the inspection table and the inspection start switch is operated to detect only the product detection device corresponding to the product, the corresponding lock mechanism is activated to lock and hold the product,
After the lock, the camera images the parts attached to the product,
The computer transmits an image registration number for image determination corresponding to the product obtained from the specification master of the product obtained using the content read by the reader as a key and a trigger signal for starting image determination to the image processing controller. ,
The received image processing controller makes a determination by comparing the image based on the image registration number for image determination with the captured image,
If the determination result is acceptable, send a message to the computer that it is acceptable and release the lock by the lock mechanism,
If not accepted, the lock by the lock mechanism is released by reading the release code with a reader operated only by the manager of the worker.

  According to the present invention, when an operator assembles a part into a product, it is possible to inspect for incorrect assembly, and when such an incorrect assembly is determined, prevention of outflow of the erroneously assembled product is prevented. can do.

  Embodiments of the present invention will be described below with reference to the drawings. First, FIG. 1 is a perspective view of a left handle cover lower 1, which is a product subject to specification inspection, FIG. 2 is a perspective view of a right handle cover lower 2, and FIG. 3 is an inspection in which an assembly part misassembly prevention device is mounted. A perspective view of the desk 10 is shown.

  First, in FIG. 1 and FIG. 2, the left handle cover 1 and the right handle cover 2 as the products to be inspected have a symmetrical shape, which includes parts such as the switch unit 3 and the coin changer. A coin box 4 or the like is assembled by an operator, and a barcode label 5 which is an identification table in which specification information of a product to be inspected is displayed as a barcode is attached. A certain color identification unit 6 is provided.

  There are a plurality of types of the switch unit 3, for example, for the right handle cover 2 or the left handle cover 1, and further, there are switches having different arrangements of the four switches 3 A, 3 B, 3 C, and 3 D. . In addition, depending on the product to be inspected for specification, there may be a case where the coin box 4 is attached by being fitted to an opening penetrating the front and back, and a case where it is not attached.

  Next, the inspection desk 10 will be described with reference to FIG. The inspection desk 10 includes an inspection table 11, a lower shelf 12 on the lower stage, and an upper shelf 13 on the upper stage of the inspection table 11. A specification inspection personal computer (hereinafter referred to as a “specification inspection personal computer”) 14 and a specification inspection personal computer 14 are connected to the lower shelf board 12 as an overall control device of an erroneous assembly prevention device for assembly parts. A keyboard 15 as an input device is placed. The specification inspection personal computer 14 includes an internal microcomputer, and a hard disk as a storage device includes specification information including an image for each model of a specification inspection target product and a representative point of the specification. The specification master is stored. Reference numeral 16 denotes a bar code reader connected to the specification inspection personal computer 14, and the bar code on the bar code label 5 is read by an operator.

  When the left handle cover 1 or the right handle cover 2 is set on the inspection table 11, the front section of the left handle cover 1 or the right handle cover 2 is controlled to have an L-shaped cross section. A stopper 20, a pair of lateral stoppers 21 having a L-shaped cross section for regulating the left and right sides of the left handle cover 1 or the right handle cover 2, and the left and right sides of the left handle cover 1 or the right handle cover 2 The left handle lock mechanism 22 and the right handle for locking by pressing and holding the notch 1A or 2A of the left handle cover 1 or the right handle cover 2 to the front stopper 20 while being restricted by the stopper 21. A lock mechanism 23 is provided. The left handle lock mechanism 22 and the right handle lock mechanism 23 have an L-shaped cross section and are moved by an air cylinder (not shown).

  The inspection table 11 includes a left handle product detection sensor 25 for detecting the presence or absence of a left handle cover 1 and a right handle product detection sensor for detecting the presence or absence of a right handle cover 2 which are proximity sensors. 26, and when the left handle cover 1 or the right handle cover 2 is set on the inspection table 11, the iron film adhered to or embedded in the left handle cover 1 or the right handle cover 2. The left handle product detection sensor 25 or the right handle product detection sensor 26 disposed at a position corresponding to (not shown) detects the presence of the left handle cover 1 or the right handle cover 2.

  Further, the inspection table 11 is provided with coin box presence / absence detection switches 28A and 28B, and detects the presence / absence of the coin box 4 attached to the left handle cover 1 or the right handle cover 2. That is, the coin box presence / absence detection switches 28A and 28B are configured by a microswitch or the like that is closed by a portion protruding downward from the back surface of the left handle cover 1 or the right handle cover 2 of the coin box 4, and the left handle cover 18 The presence or absence of the 1 or right handle cover 2 is detected.

  Reference numeral 27 denotes an inspection start button. When pressed by an operator, the inspection start switch 27A is activated to start an inspection as to whether or not a component has been misassembled.

  A first monitor 29 and a second monitor 30 connected to the specification inspection personal computer 14 are provided on the upper shelf 13 of the upper stage of the inspection table 11. Also, 31 is a speaker for voice notification, 32 is a CCD camera for imaging the switch unit 3 and the color identification unit 6, 34 is a red indicator lamp such as an LED that is lit when there is an abnormality, and 35 is normal. It is a green indicator lamp such as an LED that is lit on.

  When the specification inspection PC 14 performs matching between the specification master of the specification inspection product and the image captured by the CCD camera 32, the image registration for image determination corresponding to the specification inspection product obtained from the specification master is performed. The number is transmitted to the image processing controller 36 and a trigger signal for starting image determination is transmitted to the image processing controller 36. The image processing controller 36 is configured to compare the image based on the image registration number for image determination and the captured image by pattern matching and transmit the result to the specification inspection personal computer 14.

  With the above configuration, an inspection as to whether or not a component has been correctly attached to the right handle cover 2, in other words, an inspection as to whether or not the component has been misassembled will be described below. First, the operator reads the specification of the right handle cover 2 using the barcode reader 16 with the barcode written on the barcode label 5. When the bar code reader 16 reads the specifications of the right handle coverer 2 for the right handle, which is the product subject to the specification inspection, the specification inspection personal computer 14 registers a reservation for the inspection to be inspected. The

  Here, after the operator has read the specification, the right handle cover 2 is placed and set on the front stopper 20 and the lateral stopper 21 provided on the inspection table 11 of the inspection desk 10 for inspection. Press the start button 27. Then, the inspection start switch 27A is activated, and the specification inspection personal computer 14 starts the inspection operation. In this case, if the above-described inspection reservation registration has not been made, the specification inspection personal computer 14 notifies the right first monitor 29, the speaker 31 and the red indicator lamp 34 that “reservation registration has not been made”. Let That is, the first monitor 29 displays that “reservation registration has not been made”, the speaker 31 informs by voice that “reservation registration has not been made”, and turns on the red indicator lamp 34.

  Further, when the operator accidentally presses the inspection start button 27 in a state where the right handle cover 2 is not set on the inspection table 10, the left handle product detection sensor 25 and the right handle product which are proximity sensors. Since neither of the detection sensors 26 detects, the specification inspection personal computer 14 notifies the first monitor 29, the speaker 31, and the red indicator lamp 32 that “not set”. That is, “not set” is displayed on the first monitor 29, “not set” is notified by voice through the speaker 31, and the red indicator lamp 34 is turned on.

  On the other hand, if the right handle product detection sensor 26 and the left handle product detection sensor 25 detect both of them even though the cover handle 2 is for the right handle, it is assumed that the set abnormality of the inspection target product or the foreign object is detected. The specification inspection personal computer 14 informs that by the first monitor 29, the speaker 31 and the red indicator lamp 34. The same applies when both the right handle product detection sensor 26 and the left handle product detection sensor 25 detect both the left handle cover 1 and the cover handle 1.

  As described above, when the operator sets the right handle cover 2 on the inspection table 11, presses the inspection start button 27, and only the right handle product detection sensor 26 detects, the specification inspection personal computer 14 Then, the air handle is operated to operate the right handle locking mechanism 23 corresponding thereto, and the right handle cover 2 is pressed and held on the front stopper 20 to be locked. At this time, if the product to be actually inspected is the left handle cover 1, the left handle product even when the bar code label 5 that means the right handle cover 1 is read and the inspection reservation is made. Locking is performed by operating the left handle lock mechanism 22 corresponding to the actually set product detected by the detection sensor 25, that is, the left handle cover 1. This is to prevent the product actually set from being damaged and to prevent other troubles from occurring.

  Next, when a sufficient time has passed for the specification inspection personal computer 14 to lock the right handle cover 2 after the inspection start button 27 is pressed, the right handle lock mechanism 23 is actuated. The CCD camera 32 images the right handle cover 2, that is, the color identification unit 6 and the switch unit 3 representing the product specifications.

  The specification inspection personal computer 14 uses the specification master of the right handle cover 2 stored in its own storage device (hard disk or the like) obtained using the identification barcode read by the barcode reader 16 as a key. The image processing controller 36 is caused to perform matching with the captured image. At this time, if the specification master cannot be obtained by using the read identification barcode as a key, that is, if it is found that the specification master has not been registered, the specification inspection personal computer 14 uses the first monitor 29, the speaker 31 and the That is indicated by the red indicator lamp 34.

  The specification inspection personal computer 14 controls the first monitor 29 to display the characteristics of the right handle cover 2 on the basis of the obtained specification master, and the specification inspection personal computer 14 has the specifications of the right handle cover 2. Although the confirmation is made, the specification content is detected by the left-hand drive product detection sensor 25 in the right-hand handle cover 2, and the specification content is also detected by the right-hand product detection sensor 26 in the left-hand handle cover 1. In this case, the specification inspection personal computer 14 notifies the fact by the first monitor 29, the speaker 31 and the red indicator lamp 34.

  Further, when the specification is confirmed, the specification inspection personal computer 14 also performs additional inspection on other physical characteristics. For example, the presence / absence of the coin box 4 is inspected, and the first monitor 29, the speaker 31 and the red indicator light are detected when the coin box presence / absence detection switch 28B detects “none” despite the specification content being the right handle cover 2. At 34, this is notified.

  When the specification master of the right handle cover 2 is matched with the captured image, the specification inspection personal computer 14 registers an image for image determination corresponding to the right handle cover 2 obtained from the acquired specification master. The number is transmitted to the image processing controller 36. The specification inspection personal computer 14 transmits a trigger signal for starting image determination to the image processing controller 36. Therefore, the image processing controller 36 determines by comparing the image based on the image registration number for image determination and the captured image by pattern matching. If the determination results are the same, the image processing controller 36 indicates that the specification inspection is passed. 14 to send.

  Then, the specification inspection personal computer 14 that has received the notification of success passes the first monitor 29, the speaker 31, and the green display lamp 35 to notify that it has passed. Then, the right handle lock mechanism 23 is operated to release the lock, and the acceptance number counter 37 is incremented by “1” to display the cumulative number on the second monitor 30. To do. In the case of this pass, a stamp indicating that the test result has passed may be stamped at a predetermined position of the right handle cover 2 by a printing device (not shown).

  However, when the specification inspection personal computer 14 receives a failure from the image processing controller 36, the specification inspection personal computer 14 informs the first monitor 29, the speaker 31 and the red indicator lamp 34 of the failure. .

  That is, the inspection results are displayed on the first monitor 29 with, for example, ◯ ×, for the color identification unit 6, the arrangement of the switches in the switch unit 3, and the coin box 4.

  As described above, when an abnormality is inspected during various inspections, that is, when the inspection reservation registration is not made, or when the inspection start button 27 is pressed without the right handle cover 2 being set ( The right handle product detection sensor 26 and the left handle product detection sensor 25, which are proximity sensors, do not detect the right handle cover 2 or the right handle cover 2 or the left handle cover 1 is set. When both the product detection sensor 26 and the left-hand drive product detection sensor 25 detect it, when it is not registered in the specification master, when the right and left of the product do not match, or when the product does not conform to the specification The specification inspection personal computer 14 is indicated by the first monitor 29, the speaker 31 and the red indicator light 34. Causing notification to, in this case, rather than the operator, can be released in this state by reading the QR code for releasing in QR code reader (not shown) to which the administrator has. That is, the specification inspection personal computer 14 is controlled so as to cancel the error display of the first monitor 29, turn off the red indicator lamp 34, or unlock the lock mechanism.

  Therefore, it is possible to prevent an operator from leaking a product that has been misassembled, and to prevent the misassembled product from being used as it is. When the notification state is canceled by the administrator when the abnormality is inspected at the time of the various inspections, the specification inspection personal computer 14 increments the reject number counter 38 by “1” and sets the cumulative number to the first. 1 Display on the monitor 29.

  Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the present invention is not limited to the various alternatives described above without departing from the spirit of the present invention. It includes modifications or variations.

It is a perspective view of the cover lower for left handles. It is a perspective view of the cover lower for right handles. It is a perspective view of an inspection desk. It is a control block diagram which concerns on the incorrect assembly | attachment prevention apparatus of an assembly part. It is a figure which shows a flowchart.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cover handle for left handle 2 Cover cover for right handle 3 Switch unit 5 Bar code label 6 Color identification part 11 Inspection table 14 PC for specification inspection 16 Bar code reader 22 Lock mechanism for left handle 23 Lock mechanism for right handle 25 Detection of left handle product Sensor 26 Right handle product detection sensor 27 Inspection start button 28A, 28B Coin box presence / absence detection switch 32 CCD camera 36 Image processing controller

Claims (3)

In the method of preventing wrong assembly of parts when attaching parts to products,
An operator reads an identification table indicating the specifications of the product attached to the product to which the part is attached with a reader,
When the product is set on the inspection table and the inspection start switch is operated to detect only the product detection device corresponding to the product, the corresponding lock mechanism is activated to lock and hold the product,
A detection switch detects the presence or absence of the part attached to the product after the lock;
When the detection switch detects that the part is attached, the lock by the lock mechanism is released,
When the detection switch detects that the component is not attached, the lock is maintained, and the lock is released by the lock mechanism by a special operation performed by an administrator of an operator. How to prevent wrong assembly of parts. In the method of preventing wrong assembly of parts when attaching parts to products,
An operator reads an identification table indicating the specifications of the product attached to the product to which the part is attached with a reader,
When the product is set on the inspection table and the inspection start switch is operated to detect only the product detection device corresponding to the product, the corresponding lock mechanism is activated to lock and hold the product,
After the lock, the camera images the product,
Matching the captured image with the product specification master obtained using the content read by the reader as a key,
If it passes, the lock by the lock mechanism is released, and if it fails, the lock is maintained and the lock by the lock mechanism is released by a special operation performed by an administrator of an operator. How to prevent wrong assembly of parts. In the method of preventing wrong assembly of parts when attaching parts to products,
An operator reads an identification table indicating the specifications of the product attached to the product to which the part is attached with a reader,
When the product is set on the inspection table and the inspection start switch is operated to detect only the product detection device corresponding to the product, the corresponding lock mechanism is activated to lock and hold the product,
After the lock, the camera images the parts attached to the product,
The computer transmits an image registration number for image determination corresponding to the product obtained from the specification master of the product obtained using the content read by the reader as a key and a trigger signal for starting image determination to the image processing controller. ,
The received image processing controller makes a determination by comparing the image based on the image registration number for image determination with the captured image,
If the determination result is acceptable, send a message to the computer that it is acceptable and release the lock by the lock mechanism,
A method for preventing erroneous assembly of parts, wherein if the test is not successful, the lock by the lock mechanism is released by reading the release code with a reader operated only by the manager of the worker.

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