JP2009295942A - Marking unit structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To suppress a human-induced mistake such as miscounting of the number of inspection places by saving the labor of a checker who counts the number of the already confirmed inspection places when the checker performs the inspection by marking each of already inspected inspection places on an substrate with a writing tool such as a marking pen and then determining whether the number of markings reaches a predetermined reference number. <P>SOLUTION: When the checker presses a pen tip 22a of the writing tool 22 onto the substrate for marking on the substrate, the writing tool 22 is supported by a writing tool storage case body 24 and is slid as shown by an arrow A and then a plunger 28a slides as shown by the arrow A, so that a mechanical switch 28 is operated through the plunger 28a. Through the switch operation, the mechanical switch 28 outputs an increment command to a counter 12, which receives the increment command to increment its count value. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, a plurality of inspection points are determined in advance so as to correspond to the mounting object on a substrate on which a mounting object such as a circuit or an element is mounted, and the mounting object is mounted at each inspection point. The present invention relates to a marking unit structure for marking an inspected mark indicating that an inspection has been performed on each inspection location after inspecting the state.

  Various mounting state inspection methods have been proposed in order to inspect whether a mounting object such as an element or a circuit is appropriately mounted on a substrate. For example, an inspector confirms that a predetermined inspection location on the substrate, for example, an object to be mounted such as an element or a circuit mounted on the substrate is correctly soldered to a predetermined soldering location, and all If there is no problem in the inspection location, inspection may be performed by determining that all the mounting objects such as elements or circuits are correctly mounted on the substrate.

  In this way, in the case where the inspector confirms a predetermined inspection location on the substrate, the inspector must check the location on the substrate in order to prevent human error such as forgetting to confirm some inspection locations. In some cases, an inspection is performed by marking each of the inspected portions with a writing tool such as a marking pen and judging whether the number of markings has reached a predetermined reference number.

  However, it takes time for the inspector to count the number of confirmed inspection points during or after the inspection by the inspector marking with a marking pen on the substrate as described above, There is a possibility that a human error such as miscounting the number may occur, and it is not necessarily sufficient as a measure for preventing forgetting to inspect.

Patent Document 1 discloses a touch pen that is not a pen used in an inspection apparatus, but includes a switch that sends a signal when turned on by a pressing force of a pen tip and a spring that returns the switch to an off state. Yes.
JP-A-7-160397.

  However, the touch pen disclosed in Patent Document 1 is an information input pen used for inputting characters, diagrams, and the like in a computer, a word processor, and the like, and cannot be used as a pen for marking a board.

  It is also conceivable to acquire an image of the substrate after the inspection and count the number of marks by image processing. However, the image processing software development cost is not limited, but an imaging device is required and a large-scale device is required. It is not necessarily an appropriate measure.

  In the present invention, an inspector marks each inspected portion on the substrate by marking with a writing tool such as a general-purpose marking pen, and determines whether or not the number of markings reaches a predetermined reference number. When performing inspections, a simple marking unit structure is provided in order to reduce the labor of counting by the inspector for the number of confirmed inspection points and to suppress the occurrence of human error such as erroneous counting of the number. For the purpose.

  In the marking unit structure according to the present invention, a plurality of inspection points are determined in advance so as to correspond to the mounting object on a substrate on which a mounting object such as a circuit or an element is mounted, A marking unit structure for marking an inspected mark indicating that each inspection location has been inspected after inspecting the mounting state of the mounting object, and a writing instrument having a writing unit for marking the inspected mark on a substrate; And a capping means fitted with a writing shaft holding the writing part in the writing instrument in a state where the writing part is exposed, and an inspected mark is applied to the inspection location by the writing part attached to the cap means. Increment command is output to the counter that counts the count value of the inspected inspection place by switching operation each time Switch means that, characterized by comprising a.

  According to the marking unit structure of the present invention, a switching operation is performed each time an inspected mark is applied to an inspection location by the writing unit attached to the cap means, and the counter for counting the count value of the inspected inspection location is used. Increment command is output, so that the inspector can automatically increment the counter value by marking with a writing instrument, and a very simple board mounting inspection device that can use a general-purpose writing instrument It can be used against.

  In one aspect of the marking unit according to the present invention, the cap means is attached to a bottomed writing shaft mounting cap body detachably fitted to one end side of the writing shaft, and a bottom outer wall of the cap body. A switching operation plate, a cylindrical case body in which the switching operation plate is placed on one end side and the writing instrument is loosely accommodated in a state where the writing unit is exposed to the outside, and the switching of the case body A switch mounting cap body that is fitted to one end side on which the operation plate is placed and connects the plunger of the switch means to the switching operation plate, and the writing portion of the writing instrument has an inspected mark at the inspection location. Each time the switching operation plate is moved relative to the case body together with the writing portion, the plunger is caused to respond to the sliding operation plate. Tsu was Chi means perform the switching operation, characterized in that the count value of the inspected inspection point was configured to output an increment command to the counter.

  According to one aspect of the marking unit according to the present invention, even when the writing unit is a consumable item, the writing shaft that holds the writing unit can be attached to and detached from the switch means, so that the writing shaft can be easily replaced. be able to.

  According to the present invention, the mechanical switch performs a switching operation in response to the marking performed by the writing instrument, and an increment command is output to the counter. Therefore, the count value of the counter can be automatically incremented by marking with the writing instrument by the inspector, and the inspection by the inspector can be performed more than when the inspector confirms the number of inspected inspection points by himself / herself. While being able to improve accuracy, it can utilize for the very simple board | substrate mounting inspection apparatus which can use a general purpose writing instrument.

  The best mode for carrying out the present invention (hereinafter referred to as “embodiment”) will be described below with reference to the drawings.

  The marking unit 20 according to the present embodiment has a writing instrument for marking an inspected mark indicating that each inspection location has been inspected, and a switch unit, for example, a mechanical switch, and an inspector performs marking using the writing instrument. Thus, the mechanical switch performs a switching operation in response to the pen tip of the writing instrument being brought into contact with each inspection location.

  The marking unit 20 is connected to a mounting state inspection apparatus having a count described later, and the counter value of the counter is incremented according to the switching operation of the mechanical switch. The inspector can grasp the number of inspected inspection locations by checking the counter value displayed on the mounting state inspection apparatus.

  Here, the configuration of the marking unit 20 will be further described with reference to the drawings.

  FIG. 1A shows a schematic external view of the marking unit 20, and FIG. 1B shows a schematic cross-sectional view of the marking unit 20.

  As shown in FIGS. 1A and 1B, the marking unit 20 includes a writing tool 22 as a general-purpose writing tool for marking on a substrate, and a mechanical switch 28 that constitutes a switch unit that performs a switching operation for each marking operation of the writing tool 22. And a switch operating mechanism 27 that connects the writing instrument 22 to the mechanical switch 28 and transmits the marking operation of the writing instrument 22 to the mechanical switch 28.

  The writing instrument 22 has a pen tip 22a which is a writing portion for marking on one end side, and a writing shaft mounting cap 22b is fitted on the other end side. The mechanical switch 28 has a plunger 28a that performs a switching operation, and the mechanical switch 28 performs a switching operation when the plunger 28a slides in the direction of arrow A (the axial direction of the writing instrument 22).

  The switch operation mechanism 27 includes a fixing screw 27a that contacts the plunger 28a, a switching operation plate 27b that is screwed to the tip of the writing shaft mounting cap 22b by the fixing screw 27a, and a cylindrical body, and accommodates the writing instrument 22. At the same time, the writing instrument housing case body 24 on which the switching operation plate 27b is placed, and the one end side outer peripheral wall of the writing instrument housing case body 24 are fitted, and the plunger 28a is disposed through the opening 26b of the ceiling portion 26a. And a switch mounting cap 26. Accordingly, the plunger 28a is always urged toward the switching operation plate 27b by the spring means (not shown) via the fixing screw 25a.

  In the marking unit 20 configured in this way, the pen shaft 22c is used together with the switching operation plate 27b by the pressing force of the pen tip 22a against the substrate when the inspector presses the pen tip 22a onto the substrate and marks the substrate. It moves relative to the writing instrument storage case body 24 in the direction of arrow A. The plunger 28a performs the switching operation of the mechanical switch 28 according to the relative movement of the switching operation plate 27b.

  By performing the switch operation, the mechanical switch 28 outputs an increment command to the counter 12, and the counter 12 receives the increment command and increments the counter value. That is, the counter value of the counter 12 is incremented each time the inspector marks the board-like inspection portion using the writing tool 22 of the marking unit 20.

  The writing shaft 22c of the writing tool 22 is detachably fixed to the writing tool housing case body 24 via a writing shaft mounting cap 22b. Therefore, even if the ink of the writing tool 22 is consumed, it is only necessary to replace the writing tool 22.

  Next, the mounting state inspection apparatus to which the marking unit 20 is connected will be described with reference to the drawings.

  The mounting state inspection apparatus is an apparatus that inspects whether a mounting object such as a circuit or an element on a substrate is mounted as designed. More specifically, an inspector inspects a predetermined inspection location such as a soldering location on the board, and the inspection location determined to be acceptable is marked by the marking unit 20 described above. The mounting state inspection apparatus has a counter 12 and increments the counter value in response to the pen tip 22a of the writing instrument 22 being in contact with pressure when the inspector performs marking using the marking unit 20. In the mounting state inspection device, the total number of inspection points corresponding to the board to be inspected is set as a reference counter value in advance, and it is determined that all inspection points are marked when the counter value reaches the reference counter value. Then, this is notified to the user.

  FIG. 2 is a diagram showing functional blocks of the mounting state inspection apparatus according to the present embodiment.

  In FIG. 2, the control unit 10 is a unit that controls each unit constituting the mounting state inspection apparatus, and includes, for example, a central processing unit (CPU), a ROM, and a RAM. The control unit 10 refers to the counter value of the counter 12 and, when the counter value reaches the reference counter value stored in the reference counter value storage unit 14, for example, with a sound such as a buzzer sound via the notification unit 60. Notify the user that all inspection locations have been marked. In this embodiment, an example of notifying by voice as the notification means will be described. However, the notification means is not limited to voice, and for example, it is marked by an inspector by vibrating a marking unit 20 described later. May be notified.

  The counter 12 is a mechanical counter or a digital counter, and increments the counter value in response to the pen tip 22a of the marking unit 20 being contacted.

  Here, when the counter 12 increments the counter value in response to the contact with the pen tip 22a, depending on the method of marking by the inspector, the counter 12 may be penned several times while marking the same inspection location. There is a case where the tip 22a is contacted and the counter value is incremented each time, and the total number of inspection points cannot be counted correctly.

  Therefore, the counter 12 is used when the pen tip 22a of the marking unit 20 is in contact with pressure until the predetermined period elapses after the count value is once incremented (that is, the mechanical unit of the marking unit 20 shown below). Even when the switch 28 is switched), the counter value is not incremented for the switch operation. By prohibiting the increment of the counter value until the predetermined period elapses in this way, it is possible to prevent the counter value from being incremented a plurality of times while marking the same inspection location.

  The reference counter value storage unit 14 stores a reference counter value corresponding to the total number of inspection points corresponding to the substrate to be inspected.

  As described above, the marking unit 20 includes the writing instrument 22 and the mechanical switch 28 that increments the counter in response to the contact of the pen tip 22a of the writing instrument 22.

  The operation unit 30 is a user interface used when an operator issues an instruction to the mounting state inspection device. For example, the operation unit 30 receives operations such as setting a reference counter value, resetting a counter value, and decrementing a counter value from the operator. .

  The display unit 50 is a liquid crystal display that displays the current counter value of the counter 12. In this embodiment, an example of displaying on a display as a means for notifying a counter value will be described. However, means for notifying a counter value is not limited to a display unit, and for example, a counter value may be notified by voice. I do not care.

  The notification unit 60 is a general-purpose buzzer such as an electronic buzzer that outputs sound, and outputs sound corresponding to a control command from the control unit 10 every time the counter value is incremented. Further, the notification unit 60 outputs a sound when the counter value reaches the reference counter value. In this embodiment, an example of notifying by voice as the notification means will be described. However, the notification means is not limited to voice. For example, the counter value is set to the reference counter value for the inspector by vibrating the marking unit 20. You may be notified that you have reached.

  FIG. 3 shows a schematic front view of the mounting state inspection apparatus. As shown in FIG. 3, the mounting state inspection apparatus includes, as the operation unit 30, a dial switch 32 for setting a reference counter value, a decrement switch 34 for decrementing the counter value of the counter 12 every time the switch is operated, And a reset switch 36 for resetting the count value of the counter 12.

  The dial switch 32 has, for example, a five-stage changeover switch so as to constitute a reference count value selection setting means. A reference counter value is set in advance corresponding to each stage, and the dial switch 32 is set. Each time the position is switched, the control unit 10 updates the value of the reference counter value storage unit 14 to a reference counter value corresponding to the set position.

  The decrement switch 34 is operated by the operator when, for example, the count value of the counter 12 is erroneously incremented due to an erroneous operation of the marking unit 20 by the operator or the like, and the count value is corrected to a correct value. It is a switch to do. When the control unit 10 detects that the decrement switch 34 is switched, the control unit 10 decrements the counter value of the counter 12.

  The reset switch 36 is, for example, a switch that is switched by the operator when the count value is temporarily returned to zero when the substrate to be inspected is switched and the next substrate is inspected. When detecting that the reset switch 36 is switched, the control unit 10 resets the counter value of the counter 12, that is, returns the counter value to zero.

  In the mounting state inspection apparatus configured as described above, if the writing tool 22 is formed with a general size configuration in which the writing shaft 22c can be fitted to the writing shaft mounting cap 22b, a general-purpose tool may be used. From this point, it can be expected to simplify the apparatus and reduce the cost.

  Further, every time the inspector marks the board-like inspection portion using the writing tool 22 of the marking unit 20, the counter value of the counter 12 is incremented, and when the counter value reaches a preset reference counter value, The inspector is notified through the notification unit 60 that the marking of all the inspection points has been completed. Therefore, according to the mounting state inspection apparatus according to the present embodiment, the number of markings automatically performed every time the inspector marks the inspection points is automatically counted when all the inspection points have been marked. Therefore, the inspector is notified of this fact, so that leakage at the inspection location can be reduced and the accuracy of the inspection can be improved.

  In addition, the counter value is incremented a plurality of times while marking the same inspection location by prohibiting the counter 12 from incrementing the counter value until a predetermined period elapses after the count value is once incremented. Can be prevented.

  Further, every time the count value is incremented, the inspector is notified by voice via the notification unit 60 that the count value has been incremented, so that the inspector reliably increments the count value every time the inspection location is marked. It is possible to save the trouble of visually confirming whether or not it has been done. In addition, since it is notified by voice even when it is mistakenly incremented, the inspector can easily grasp the occurrence of malfunction of the counter.

  In addition, by providing the mounting state inspection device with the decrement switch 34, even if it is incremented due to a malfunction of the counter, it can be easily returned to the correct value.

  The present invention performs a switching operation each time an inspected mark is applied to the inspection location by the writing unit attached to the cap means, and outputs an increment command to the counter that counts the count value of the inspected inspection location. The inspector can automatically increment the counter value by marking with a writing instrument, and because it is a very simple marking unit structure that can use a general-purpose writing instrument, The present invention can be used for a substrate mounting state inspection apparatus using a marking unit for marking an inspected mark indicating that each inspection location has been inspected after inspecting the mounting state.

It is a schematic external view of a marking unit. It is a schematic sectional drawing of a marking unit. It is a figure which shows the functional block of the mounting state inspection apparatus which concerns on this embodiment. It is a schematic front view of a mounting state inspection apparatus.

Explanation of symbols

12 counter 20 marking unit 22 writing tool 22b writing shaft mounting cap body 22c writing shaft 24 writing tool housing case body 26 switch mounting cap body 27 switch operation mechanism 27b switch operation plate 28 mechanical switch (switch means)

Claims (2)

A plurality of inspection points are determined in advance so as to correspond to the mounting object on a substrate on which the mounting object such as a circuit or an element is mounted, and the mounting state of the mounting object is inspected at each inspection point. It is a marking unit structure for marking an inspected mark indicating that the inspection has been inspected at each inspection point later,
A writing instrument having a writing part for marking an inspected mark on a substrate;
A capping means fitted with a writing shaft holding the writing part in the writing instrument in a state where the writing part is exposed;
Switch means for outputting an increment command to a counter that performs a switching operation and counts the count value of the inspected inspection location each time the inspection location is marked by the writing unit attached to the cap means; ,
A marking unit structure used for substrate inspection, comprising: In the marking unit structure according to claim 1,
The cap means includes a bottomed writing shaft mounting cap body detachably fitted to one end side of the writing shaft, a switching operation plate mounted on a bottom outer wall of the writing shaft mounting cap body, and the switching A cylindrical writing instrument housing case body in which the operation plate is placed on one end side and the writing instrument is loosely accommodated in a state where the writing section is exposed to the outside, and the switching operation plate of the writing instrument housing case body is placed. A switch mounting cap body that is fitted to one end side and connects the plunger of the switch means to the switching operation plate,
Each time the writing part of the writing instrument places an inspected mark on the inspection location, the switching operation plate moves relative to the case body together with the writing part to cause the plunger to respond to the switching means. The marking unit structure used for the substrate inspection is configured to output the increment command to the counter with respect to the count value of the inspected inspection portion.