JPS6412327B2 - - Google Patents
Info
- Publication number
- JPS6412327B2 JPS6412327B2 JP7770081A JP7770081A JPS6412327B2 JP S6412327 B2 JPS6412327 B2 JP S6412327B2 JP 7770081 A JP7770081 A JP 7770081A JP 7770081 A JP7770081 A JP 7770081A JP S6412327 B2 JPS6412327 B2 JP S6412327B2
- Authority
- JP
- Japan
- Prior art keywords
- screw
- signal
- section
- side walls
- timing signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000007689 inspection Methods 0.000 claims description 28
- 238000001514 detection method Methods 0.000 claims description 26
- 238000005259 measurement Methods 0.000 claims description 17
- 238000012546 transfer Methods 0.000 claims description 14
- 239000011521 glass Substances 0.000 claims description 11
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000001678 irradiating effect Effects 0.000 claims description 2
- 108010076504 Protein Sorting Signals Proteins 0.000 claims 1
- 238000007747 plating Methods 0.000 description 5
- 230000002950 deficient Effects 0.000 description 4
- 238000003384 imaging method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000003796 beauty Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/04—Sorting according to size
- B07C5/10—Sorting according to size measured by light-responsive means
Landscapes
- Length Measuring Devices By Optical Means (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Description
【発明の詳細な説明】
本発明は、複数の検査ステージを備え所望の各
種検査を行ない得るねじ検査装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a screw inspection device that includes a plurality of inspection stages and is capable of performing various desired inspections.
最近では自動ねじ締め機が多用される傾向にあ
るが、このものは供給されるねじに不良品が混入
していると作動不能となり、一旦停止すると回復
に手間取るため関係ラインに著しい悪影響を及ぼ
し、多大の損害を生ずることにもなりかねないの
で、このような事態の発生を防止するため従来か
ら各種のねじ検査機が併用されている。 Recently, there has been a tendency for automatic screw tightening machines to be used frequently, but these machines become inoperable if the supplied screws contain defective products, and once they stop, it takes time to recover, which has a significant negative impact on related lines. Since this can cause a great deal of damage, various types of screw inspection machines have been used in combination to prevent such situations from occurring.
たとえば第１図に示すようなローラ選別器１に
おいては、軸方向に傾斜した一対の回転ローラ
２，２の上側間隔d1を下側間隔d2より小さく設定
しておき、ねじａを頭部がローラ２，２で支えら
れた状態で上側から下側へ矢印方向に移動させ、
頭部径が小さすぎるものは上側ゾーンZ1を通過中
に、標準のものは中間ゾーンZ2を通過中に、大き
すぎるものは下側ゾーンZ3でそれぞれ落下させる
ことにより選別するように構成されている。この
ローラ選別器１は構造が簡単で安価であるととも
に取扱いが容易であるが、ねじの頭部径しか検査
し得ないという難点がある。 For example, in a roller sorter 1 as shown in FIG. is supported by rollers 2, 2, and moved from the upper side to the lower side in the direction of the arrow.
The structure is such that those with a too small head diameter are sorted while passing through the upper zone Z 1 , those with a standard diameter are dropped while passing through the middle zone Z 2 , and those that are too large are dropped in the lower zone Z 3 . has been done. This roller sorter 1 has a simple structure, is inexpensive, and is easy to handle, but it has a drawback in that it can only inspect the head diameter of the screw.
また、第２図に示すねじ検査装置３において
は、上記ローラ選別器１と、このローラ選別器１
にねじを供給する第１のパーツフイーダ４と、中
間ゾーンZ2から落下したねじを収容する第２のパ
ーツフイーダ５と、この第２のパーツフイーダ５
の出側に設けられた直進フイーダ６と、この直進
フイーダ６の出側に設けられた回転テーブル７
と、この回転テーブル７の周縁部に設けられた複
数の検査ステージ（図示略）とを備え、頭部径の
他にたとえば首下長さ、ねじ部の有無、メツキの
良否等の判別を行ない得るように構成されてい
る。このものにおいては所望の各種検査を行なわ
せることができるが、直進フイーダ６から回転テ
ーブル７へのねじの転送が円滑に行なわれ難く、
そのため故障を生じ易いので稼働率が低下すると
いう欠点がある。さらに、ローラ選別器の他に２
台のパーツフイーダ４，５と直進フイーダ６およ
び回転テーブル７など多くの部分を有しているか
ら構造が複雑かつ高価であり、被検査ねじの種類
が異なるごとに調整に多くの手数を要するなどの
難点がある。 Further, the screw inspection device 3 shown in FIG. 2 includes the roller sorter 1 and the roller sorter 1.
a first parts feeder 4 that supplies screws to the intermediate zone Z2, a second parts feeder 5 that accommodates screws that have fallen from the intermediate zone Z2 , and this second parts feeder 5.
A linear feeder 6 provided on the exit side of the linear feeder 6, and a rotary table 7 provided on the exit side of the linear feeder 6.
and a plurality of inspection stages (not shown) provided on the periphery of the rotary table 7, which determines, in addition to the head diameter, the length under the neck, the presence or absence of threads, the quality of plating, etc. It is configured to obtain. With this device, various desired inspections can be performed, but it is difficult to transfer the screws from the linear feeder 6 to the rotary table 7 smoothly.
Therefore, there is a drawback that failures are likely to occur and the operating rate is reduced. Furthermore, in addition to the roller sorter, 2
The structure is complicated and expensive because it has many parts such as the parts feeders 4 and 5 on the stand, the linear feeder 6, and the rotary table 7, and it requires a lot of effort to adjust each type of screw to be inspected. There are some difficulties.
また、特開昭55−70702号公報に見られる先行
技術のように、薄板状の一対の平行材の間に、ね
じを首吊り状態で搬送し、その搬送途中において
ねじ山の検査等を行なうものが考えられている。 Furthermore, as in the prior art disclosed in Japanese Patent Application Laid-Open No. 55-70702, a screw is transported in a hanging state between a pair of thin parallel members, and the threads of the screw are inspected during the transport. is considered.
しかしながらこの先行技術の装置は、上記平行
材が薄板状であるため搬送途中のねじの振れを拘
束することができず、このためタイミングのミス
カウントや検査精度が低下したり、甚だしい場合
には検査不能に陥ることがある。 However, in this prior art device, since the parallel material is in the form of a thin plate, it is not possible to restrain the deflection of the screw during transportation, resulting in timing miscounts and lower inspection accuracy, and in extreme cases, the inspection accuracy may be reduced. You may become incapacitated.
本発明は上記事情のもとになされたもので、そ
の目的とするところは、構造が簡単で安価である
とともに取扱いが容易であり、しかも所望の各種
検査を自動的にかつ精度良く行ない得るねじ検査
装置を提供することにある。 The present invention has been made under the above circumstances, and aims to provide a screw having a simple structure, low cost, easy handling, and capable of automatically and accurately performing various desired inspections. The purpose is to provide inspection equipment.
以下、本発明を図示の一実施例を参照して説明
する。第３図においてパーツフイーダ１０は通常
のものと同様であつてよく、ねじａを頭部が上方
に位置する状態で１個ずつ順に送出し得るように
構成されている。移送手段１１はねじａの頭部径
よりは小さくかつ首下径よりは大きい幅の溝１２
を介してほぼ平行に相対向する一対の側壁１３，
１３を備え、パーツフイーダ１０から送出された
ねじａを、頭部が上方に位置して側壁１３，１３
の各上縁により支持されるとともに首下が溝１２
内に垂下された姿勢で下手方向（第３図において
左方）に順に移送し得るように構成されている。 Hereinafter, the present invention will be explained with reference to an illustrated embodiment. In FIG. 3, the parts feeder 10 may be similar to a conventional one, and is configured so that the screws a can be fed out one by one with the heads positioned upward. The transfer means 11 has a groove 12 having a width smaller than the head diameter of the screw a and larger than the bottom diameter of the screw a.
a pair of side walls 13 facing each other in parallel with each other,
13, and the screw a fed from the parts feeder 10 is inserted into the side walls 13, 13 with the head positioned upward.
is supported by each upper edge of the neck and has a groove 12 under the neck.
It is configured so that it can be sequentially transferred downward (to the left in FIG. 3) in a suspended position.
上記側壁１３，１３の高さすなわち上下方向の
寸法は、ねじａの首下部分の長さよりも大となる
ように形成されている。こうすることにより、ね
じａが側壁１３，１３の幅方向に揺れることが抑
制され、ねじの首吊り姿勢がきわめて安定なもの
となる。この場合ねじａ…を移動させるには、た
とえば側壁１３，１３を各上縁が下手側に低く傾
斜するように形成するとともに若干の振動を与え
るようにしても、あるいはその他の適宜の駆動手
段を設けるようにしてもよく、いずれにしてもね
じａは溝１２および側壁１３，１３等によつて構
成される移送路１４に沿つて順に移送される。こ
の場合には、特に前述した側壁１３，１３による
ねじａの振れ止め効果が有効に発揮される。そし
て、この移送路１４に臨んで複数（図は３つの場
合）の検査ステージ１５，１６，１７が順に配設
されている。 The height of the side walls 13, 13, that is, the dimension in the vertical direction, is formed to be larger than the length of the lower neck portion of the screw a. By doing so, the screw a is prevented from swinging in the width direction of the side walls 13, 13, and the hanging posture of the screw becomes extremely stable. In this case, in order to move the screws a..., for example, the side walls 13, 13 may be formed so that their upper edges are inclined downwardly, and some vibration may be applied, or other suitable driving means may be used. In any case, the screw a is sequentially transferred along the transfer path 14 constituted by the groove 12 and the side walls 13, 13, etc. In this case, the effect of preventing the screw a from steadying, particularly by the side walls 13, 13 described above, is effectively exhibited. A plurality of (three in the figure) inspection stages 15, 16, and 17 are sequentially arranged facing this transfer path 14.
上記各検査ステージ１５，１６，１７には、ね
じａが当該ステージに到達するごとに所定のタイ
ミング信号を発生するタイミング信号発信部１８
…がそれぞれ設けられている。このタイミング信
号発信部１８は、たとえばねじａを照射する投光
手段と、ねじａからの反射光を受けて所定の信号
を送出する受光手段とを備えている。必要があれ
ば反射光の代りに照射光の遮断を利用するように
しても、あるいはその他の適宜手段を用いるよう
にしてもよい。また、各検査ステージ１５，１
６，１７にはねじａの各被検査部に対応して後述
する各検出部がそれぞれ設けられている。 Each of the inspection stages 15, 16, and 17 has a timing signal transmitter 18 that generates a predetermined timing signal every time the screw a reaches the stage.
... are provided for each. The timing signal transmitter 18 includes, for example, a light projecting means for illuminating the screw a, and a light receiving means for receiving reflected light from the screw a and transmitting a predetermined signal. If necessary, blocking of irradiated light may be used instead of reflected light, or other appropriate means may be used. In addition, each inspection stage 15, 1
Detectors 6 and 17 are provided with respective detection sections, which will be described later, corresponding to the respective sections of the screw a to be inspected.
すなわち、第１の検査ステージ１５にはねじａ
の首下長さに対応する信号を送出する首下長さ検
出部２０が設けられている。この検出部２０は第
４図に例示するように透明ガラス製の側壁１３，
１３に対向して上記溝１２の両側に配設された投
光手段２２と、ねじａの軸方向に所定ピツチで配
設された複数のホトダイオードを有する固体式撮
像装置２３とを備え、ねじａによつて遮蔽されて
いるホトダイオードの数に対応する計測信号を発
生し得るように構成されている。したがつて、上
記側壁１３，１３の上面から測つた撮像装置２３
の位置を適宜に設定しておくことにより、ねじａ
の首下長さに対応する計測信号を送出することが
できる。また、この検出部２０によれば、遮蔽さ
れた光量を電圧に変換する従来のアナログ式検出
手段に比べて環境条件の影響が少なく、測定精度
および信頼性を向上させることができる。 That is, the first inspection stage 15 has a screw a.
An under-neck length detection section 20 is provided that sends out a signal corresponding to the under-neck length. As illustrated in FIG. 4, this detection unit 20 includes a side wall 13 made of transparent glass,
13, and a solid-state imaging device 23 having a plurality of photodiodes arranged at a predetermined pitch in the axial direction of the screw a. The sensor is configured to generate a measurement signal corresponding to the number of photodiodes that are shielded by the sensor. Therefore, the imaging device 23 measured from the top surface of the side walls 13, 13
By setting the position appropriately, screw a
A measurement signal corresponding to the length under the neck can be transmitted. Further, according to this detection unit 20, the influence of environmental conditions is smaller than that of conventional analog detection means that converts the amount of shielded light into voltage, and measurement accuracy and reliability can be improved.
側壁１３，１３は透明ガラス製であるので上記
投光手段２２と対向する位置に透孔を設ける必要
はない。なお、透孔を設けた場合には透孔の機械
加工が必要となるため、コストが高くなるととも
に、側壁１３の強度が低下するため設計上の制約
を受ける。更に、側壁１３に振動を加えてねじａ
を移送する方式を採用した場合には、側壁１３に
おける透孔の部分の剛性が他の部分に比べて低下
するため、透孔の付近で振動モードが変化し、異
常な振動を起してねじａの姿勢が不安定になる可
能性があり、かつこの部位の疲労強度も問題であ
る。しかしながら前述した本実施例のように側壁
１３，１３を透明ガラスで形成して光を透過でき
るようにすれば、透孔を設ける必要がなくなるの
で上述の問題点は生じない。 Since the side walls 13, 13 are made of transparent glass, there is no need to provide a through hole at a position facing the light projecting means 22. Note that when a through hole is provided, the through hole requires machining, which increases the cost and reduces the strength of the side wall 13, which imposes design restrictions. Furthermore, by applying vibration to the side wall 13, the screw a
If a method is adopted in which the side wall 13 has a through-hole, the rigidity of the through-hole part will be lower than other parts, so the vibration mode will change near the through-hole, causing abnormal vibrations and damaging the screw. The posture of a may become unstable, and the fatigue strength of this part is also a problem. However, if the side walls 13, 13 are made of transparent glass to allow light to pass through, as in the present embodiment described above, there is no need to provide a through hole, so the above-mentioned problem does not occur.
第２の検査ステージ１６にはねじａの頭径に対
応する信号を送出する頭径検出部２４が設けられ
ている。この検出部２４は第５図Ａに例示するよ
うに上記側壁１３，１３を透明ガラスから形成す
るとともに、相互に対向して側壁１３，１３の
上、下両側に配設された投光手段（図示略）と、
所定ピツチで面的に配設された複数のホトダイオ
ードを有する固体式撮像装置２５とを備え、ねじ
ａの頭部によつて遮蔽された映像を走査して直径
方向におけるホトダイオードの数の最大値に対応
する計測信号を発生し得るように構成されてい
る。あるいは、第５図Ｂに例示するように、ねじ
ａを両側方から照射する投光手段（図示略）を設
け、頭部からの反射光を撮像装置２５に入射させ
るようにしてもよく、また、ねじａの頭部形状に
よつては上記首下長さ検出部２０とほぼ同様なも
のを横方向にして用いるようにしてもよい。 The second inspection stage 16 is provided with a head diameter detection section 24 that sends out a signal corresponding to the head diameter of the screw a. As illustrated in FIG. 5A, this detection unit 24 has the side walls 13, 13 made of transparent glass, and light projecting means ( (not shown) and
It is equipped with a solid-state imaging device 25 having a plurality of photodiodes arranged planarly at a predetermined pitch, and scans the image shielded by the head of the screw a to reach the maximum number of photodiodes in the diametrical direction. The arrangement is such that a corresponding measurement signal can be generated. Alternatively, as illustrated in FIG. 5B, a light projecting means (not shown) may be provided to illuminate the screw a from both sides, and the reflected light from the head may be incident on the imaging device 25. Depending on the shape of the head of the screw a, it is also possible to use a device substantially similar to the neck length detection section 20 in the horizontal direction.
第３の検査ステージ１７にはねじａにおけるね
じ部の有無に対応する計測信号を送出するねじ検
出部２６が設けられている。この検出部２６は第
６図に例示するように、ねじａのねじ部ｂにほぼ
外接するようにしてレーザビーム２７を投射する
レーザ発振器（図示略）と、ねじ部ｂによつて生
ずる回折レーザ光を受信する受光素子２８…とを
備えている。すなわち、仮想のスクリーン２９に
回折レーザ光を投射すると、ねじ部ｂが形成され
ている場合にはそのねじ山角度に対応する傾斜角
の斜線状回折パターン３０を生ずるのに対し、ね
じ部ｂが形成されていない場合には横線状の回折
パターン３１を生ずる。したがつて、図示例のよ
うに横線状回折パターン３１の領域外で斜線状回
折パターン３０の領域内に受光素子２８…を配設
しておけば、受光素子２８…の出力信号の有無に
よりねじ部ｂの有無を検知することができる。こ
のため、単なる反射光量に対応する電圧出力を得
るようにした従来のアナログ式検出手段の場合に
見られるようなねじ部の状態に応じて調整を行な
うといつた操作が不要であり、確実に検出するこ
とができる。 The third inspection stage 17 is provided with a thread detection section 26 that sends out a measurement signal corresponding to the presence or absence of a threaded portion in the thread a. As illustrated in FIG. 6, this detection unit 26 includes a laser oscillator (not shown) that projects a laser beam 27 so as to be substantially circumscribed on the threaded part b of the screw a, and a diffraction laser beam generated by the threaded part b. It includes a light receiving element 28 that receives light. That is, when a diffracted laser beam is projected onto the virtual screen 29, a diagonal diffraction pattern 30 having an inclination angle corresponding to the thread angle is generated when a threaded portion b is formed, whereas a diagonal diffraction pattern 30 is generated when a threaded portion b is formed. If it is not formed, a horizontal line-shaped diffraction pattern 31 is produced. Therefore, if the light receiving elements 28 are arranged outside the area of the horizontal line diffraction pattern 31 and within the area of the oblique line diffraction pattern 30 as shown in the illustrated example, the screw The presence or absence of part b can be detected. Therefore, there is no need to perform operations such as making adjustments according to the condition of the threaded part, which is required in the case of conventional analog detection means that simply obtain a voltage output corresponding to the amount of reflected light. can be detected.
上記第３の検査ステージ１７にはねじａに対す
るメツキの良否に対応する計測信号を送出するメ
ツキ良否検出部３２が設けられている。この検出
部３２はねじａからの反射光量に対応する計測信
号を送出するように構成されており、通常のもの
と同様のものであつてよい。 The third inspection stage 17 is provided with a plating quality detection section 32 that sends out a measurement signal corresponding to the quality of plating on the screw a. This detection section 32 is configured to send out a measurement signal corresponding to the amount of light reflected from the screw a, and may be similar to a normal one.
上述した光学的検出部２０，２４，２６，３２
は第７図に示すようにそれぞれに対応する各タイ
ミング信号発信部１８…とともに比較部３３，３
４，３５にそれぞれ接続されている。これら比較
部３３，３４，３５の各出力端は判定部３６を介
して選別部３７に導かれている。 The above-mentioned optical detection units 20, 24, 26, 32
As shown in FIG.
4 and 35, respectively. Each output terminal of these comparison sections 33, 34, and 35 is guided to a selection section 37 via a determination section 36.
第１の比較部３３はねじａの首下長さにつきそ
の基準値および許容限界が予め設定されており、
関連する発信部１８からのタイミング信号に応じ
て動作を開始し、首下長さ検出部２０からの計測
信号と上記設定値とを比較する。そして、入力さ
れた計測信号と基準値との差異が許容限界を越え
た場合に所定の出力信号を送出する。 The first comparison part 33 has a reference value and an allowable limit set in advance for the length under the neck of the screw a,
The operation is started in response to a timing signal from the related transmitter 18, and the measurement signal from the under-neck length detector 20 is compared with the set value. Then, when the difference between the input measurement signal and the reference value exceeds a permissible limit, a predetermined output signal is sent out.
第２の比較部３４はねじａの頭径についてその
基準値および許容限界が予め設定されており、関
連する発信部１８からのタイミング信号に応じて
動作を開始し、頭径検出部２４からの計測信号と
上記設定値とを比較する。そして、入力された計
測信号と基準値との差異が許容限界を越えた場合
に所定の出力信号を送出する。 The second comparator 34 has a reference value and an allowable limit set in advance for the head diameter of the screw a, starts operation in response to a timing signal from the related transmitter 18, and receives a signal from the head diameter detector 24. Compare the measurement signal and the above set value. Then, when the difference between the input measurement signal and the reference value exceeds a permissible limit, a predetermined output signal is sent out.
第３の比較部３５はねじａのメツキの良否につ
いてその基準値および許容限界が予め設定されて
おり、関連する発信部１８からのタイミング信号
に応じて動作を開始し、メツキ良否検出部３２か
らの計測信号と上記設定値とを比較する。そし
て、メツキ良否検出部３２からの計測信号と基準
値との差が許容限界を越えた場合、またはねじ検
出部２６からの計測信号が入力された場合に所定
の出力信号を発生する。 The third comparison unit 35 has a reference value and an allowable limit set in advance regarding the quality of the plating of the screw a, and starts its operation in response to a timing signal from the related transmitting unit 18. Compare the measured signal with the above set value. Then, a predetermined output signal is generated when the difference between the measurement signal from the plating quality detection section 32 and the reference value exceeds an allowable limit, or when the measurement signal from the screw detection section 26 is input.
判定部３６は各比較部３３，３４，３５からの
出力信号に応じて上記移送路１４における当該ね
じの位置を記憶し、このねじが移送路１４の出口
に到達したときに所定の選別信号を送出する。 The determination unit 36 stores the position of the screw in the transfer path 14 according to the output signals from each of the comparison units 33, 34, and 35, and outputs a predetermined selection signal when the screw reaches the exit of the transfer path 14. Send.
選別部３７は上記移送路１４から送出されたね
じａ…を受容可能な受入口３８と、この受入口と
切換手段（図示略）を介して選択的に連通される
良品送出口３９および不良品排出口４０とを備え
ている。そして、上記判定部３６からの選別信号
が入力されたとき上記切換手段が動作し、受入口
３８を不良品排出口４０と連通させるとともに良
品送出口３９との連通を遮断するように構成され
ている。 The sorting section 37 includes a receiving port 38 capable of receiving the screws a delivered from the transfer path 14, a good product delivery port 39 selectively communicating with the receiving port via a switching means (not shown), and a defective product receiving port 38. A discharge port 40 is provided. When the sorting signal from the determining section 36 is input, the switching means is configured to operate, to communicate the receiving port 38 with the defective product outlet 40 and to cut off the communication with the non-defective product outlet 39. There is.
上記構成によれば、溝１２および平行に設けら
れた一対の側壁１３，１３からなる移送路１４に
沿つてねじａ…を順に移送しながら各検査ステー
ジ１５，１６，１７において所望の各検査を行な
うようにしたので、前記従来装置３に比べて構造
が著しく簡単であり、パーツフイーダ１０が１つ
ですむとともにローラ選別器１および回転テーブ
ル７等を要しないので原価が大幅に低減されると
ともに、取扱いが容易である。そしてねじａの姿
勢を安定なものして搬送することができ、かつ検
査精度の低下をきたさない。 According to the above configuration, each desired inspection is performed on each inspection stage 15, 16, 17 while sequentially transferring the screws a along the transfer path 14 consisting of the groove 12 and a pair of parallel side walls 13, 13. As a result, the structure is significantly simpler than that of the conventional device 3, and only one parts feeder 10 is required, and the roller sorter 1, rotary table 7, etc. are not required, resulting in a significant reduction in cost and ease of handling. is easy. Further, the screw a can be transported with its posture stabilized, and the inspection accuracy does not deteriorate.
なお、本発明は上記実施例のみに限定されるも
のではなく、たとえば検査ステージの数、これら
各ステージにおける検査種目およびその配列順等
は任意に設定可能である。また、各検出部２０，
２４，２６，３２等は他の適宜手段と置換えるよ
うにしてもよい。必要があれば移送路１４を湾曲
させて設けるなどしてもよいが、いずれにしても
側壁１３，１３は透明ガラス製とする。 It should be noted that the present invention is not limited to the above-mentioned embodiments, and for example, the number of inspection stages, the types of inspection in each stage, their arrangement order, etc. can be set arbitrarily. In addition, each detection unit 20,
24, 26, 32, etc. may be replaced with other appropriate means. If necessary, the transfer path 14 may be provided in a curved manner, but in any case, the side walls 13, 13 are made of transparent glass.
第４図と第５図Ａ，Ｂに示されるように一対の
側壁１３，１３を構成する透明ガラスは互いに独
立しており、それぞれ断面が縦長矩形状をなして
いる。 As shown in FIGS. 4 and 5A and 5B, the transparent glasses forming the pair of side walls 13 and 13 are independent from each other, and each has a vertically long rectangular cross section.
パーツフイーダ１０および選別部３７の構成お
よび有無等も任意に設定可能である。その他、本
発明の要旨とするところの範囲内において種々の
変更ないし応用が可能である。 The configuration and presence/absence of the parts feeder 10 and the sorting section 37 can also be set arbitrarily. In addition, various modifications and applications are possible within the scope of the gist of the present invention.
本発明は、上述したように、互いに平行な一対
の側壁を有するとともにこの側壁間の溝の幅をね
じの頭部径よりも狭くしかつ首下径よりも広くし
て上記ねじをその頭部を上にした首吊り姿勢で上
記溝に沿つて搬送下流側に移送する移送手段と、
上記側壁に臨んで設けられ上記ねじに光を照射す
る投光手段を備えかつ当該ねじの各被検査部を光
学的に検出して被検査部の状態に対応する計測信
号をそれぞれ送出可能な複数の検出部と、上記ね
じが上記各検出部に到達するごとにそれぞれ所定
のタイミング信号を送出するタイミング信号発信
部と、上記タイミング信号が入力されるごとに上
記計測信号と予め設定された基準値とを比較して
所定の信号を送出する比較部と、この所定の信号
に応じて選別信号を送出する判別部と、上記選別
信号にもとづき上記移送手段の搬送終端側でねじ
を振分ける選別部とを有するねじ検査装置である
から、従来装置に比較して装置全体の構造が簡単
となりかつコンパクトに構成できるので、低コス
トであるとともに取扱いが容易であつて、故障の
発生頻度も大幅に低減させることができる。 As described above, the present invention has a pair of side walls that are parallel to each other, and the width of the groove between the side walls is narrower than the diameter of the head of the screw and wider than the diameter of the lower neck of the screw. a transport means for transporting the container to the downstream side along the groove in a hanging position with the container facing upward;
A plurality of light emitting means provided facing the side wall and capable of irradiating light onto the screw, and capable of optically detecting each portion to be inspected of the screw and transmitting a measurement signal corresponding to the state of the portion to be inspected. a detection section, a timing signal transmission section that sends out a predetermined timing signal each time the screw reaches each of the detection sections, and a timing signal transmission section that sends out a predetermined timing signal each time the screw reaches each of the detection sections, and a reference value that is set in advance as the measurement signal each time the timing signal is input. a comparison section that sends out a predetermined signal based on the comparison, a discrimination section that sends out a sorting signal in response to the predetermined signal, and a sorting section that sorts the screws at the conveyance end side of the transfer means based on the sorting signal. This screw inspection device has a simpler and more compact structure than conventional devices, making it low cost and easy to handle, and the frequency of failures is greatly reduced. can be done.
そして、前記側壁の高さをねじの首下部分より
も大となるように形成したので、ねじの移送が円
滑に行なわれかつねじの搬送姿勢が安定化するこ
とから、この種のねじ検査装置における検査精度
を大幅に向上させることができる。 Since the height of the side wall is formed to be larger than the lower part of the screw neck, the screw can be transferred smoothly and the conveying posture of the screw can be stabilized. The inspection accuracy can be significantly improved.
前記側壁は透明ガラスによつて作られており、
この側壁間における移送路を通過するねじの様子
を外部から容易に目視することができるから、ね
じが正規の姿勢で整然と移送されているかどうか
を確認することが容易であり、かつ表面処理等の
異なる異品の混入を排除する上でも有効である。 The side wall is made of transparent glass,
Since the state of the screws passing through the transfer path between the side walls can be easily observed from the outside, it is easy to check whether the screws are being transferred in an orderly manner in the correct posture, and it is also possible to check whether the screws are being transferred in an orderly manner in the correct posture. It is also effective in eliminating the contamination of different foreign products.
また本発明における一対の側壁は互いに独立し
ている２枚の断面縦長矩形状の透明ガラスを用い
ているので、被検査物としてのねじのねじ径サイ
ズに応じて側壁間の溝幅を変化させることが可能
であり、従つて様々なねじ径サイズのねじを検査
することができる。また、ガラス製の側壁を用い
ているから、ねじとの接触面の摩耗が少なく滑り
も良好であり、しかも透明ガラス製側壁の内側を
整然と一列に並んで搬送されてゆく検査中のねじ
群を側壁外部から目視できるため、いわゆる機能
美にあふれた美的効果もある。 Furthermore, since the pair of side walls in the present invention are made of two mutually independent transparent glasses each having a vertically elongated rectangular cross section, the width of the groove between the side walls can be changed depending on the thread diameter size of the screw to be inspected. It is therefore possible to inspect screws of various thread diameter sizes. In addition, since the glass side wall is used, there is less wear on the contact surface with the screws, and the sliding is good.Furthermore, the screws being inspected are transported in an orderly line inside the transparent glass side wall. Since it is visible from the outside of the side wall, it also has an aesthetic effect that is full of so-called functional beauty.
第１図ＡおよびＢは従来装置を示す側面図およ
び正面図、第２図は他の従来装置を示す斜視図、
第３図は本発明の一実施例を示す斜視図、第４図
は同実施例における首下長さ検出部の略断面図、
第５図Ａ，Ｂは同実施例における頭径検出部の略
断面図、第６図は同実施例におけるねじ検出部の
略側面図、第７図は同実施例のブロツク図であ
る。
１１……移送手段、１３……側壁、１４……移
送路、１５，１６，１７……検査ステージ、１８
……タイミング信号発信部、２０，２４，２６，
３２……検出部、３３，３４，３５……比較部、
３６……判定部。
FIGS. 1A and B are side and front views of a conventional device, FIG. 2 is a perspective view of another conventional device,
FIG. 3 is a perspective view showing one embodiment of the present invention, and FIG. 4 is a schematic cross-sectional view of the under-neck length detection section in the same embodiment.
5A and 5B are schematic sectional views of the head diameter detection section in the same embodiment, FIG. 6 is a schematic side view of the screw detection section in the same embodiment, and FIG. 7 is a block diagram of the same embodiment. 11... Transfer means, 13... Side wall, 14... Transfer path, 15, 16, 17... Inspection stage, 18
...timing signal transmitter, 20, 24, 26,
32... detection section, 33, 34, 35... comparison section,
36... Judgment section.
Claims (1)
の側壁間の溝の幅をねじの頭部径よりも狭くしか
つ首下径よりも広くして上記ねじをその頭部を上
にした首吊り姿勢で上記溝に沿つて搬送下流側に
移送する移送手段と、上記側壁に臨んで設けられ
上記ねじに光を照射する投光手段を備えかつ当該
ねじの各被検査部を光学的に検出して被検査部の
状態に対応する計測信号をそれぞれ送出可能な複
数の検出部と、上記ねじが上記各検出部に到達す
るごとにそれぞれ所定のタイミング信号を送出す
るタイミング信号発信部と、上記タイミング信号
が入力されるごとに上記計測信号と予め設定され
た基準値とを比較して所定の信号を送出する比較
部と、この所定の信号に応じて選別信号を送出す
る判別部と、上記選別信号にもとづき上記移送手
段の搬送終端側でねじを振分ける選別部とを有す
るねじ検査装置において、 前記一対の側壁を互いに独立している２枚の断
面縦長矩形状の透明ガラスで形成するとともに、
前記側壁の高さを、ねじの首下部分の長さよりも
大となるように形成したことを特徴とするねじ検
査装置。[Claims] 1. The screw has a pair of side walls parallel to each other, and the width of the groove between the side walls is narrower than the diameter of the head of the screw and wider than the diameter of the lower neck, so that the screw has its head upward. It is equipped with a transport means for transporting the screw to the downstream side along the groove in a hanging posture, and a light projection means provided facing the side wall for irradiating light onto the screw. a plurality of detection sections each capable of detecting and sending out measurement signals corresponding to the state of the inspected part; and a timing signal transmission section each sending out a predetermined timing signal each time the screw reaches each of the detection sections. , a comparison section that compares the measurement signal with a preset reference value and sends out a predetermined signal each time the timing signal is input; and a discrimination section that sends out a selection signal in response to the predetermined signal. , a screw inspection device having a sorting section that sorts out screws at the conveyance end side of the transfer means based on the sorting signal, wherein the pair of side walls are formed from two mutually independent transparent glasses each having a vertically elongated rectangular cross section. At the same time,
A screw inspection device characterized in that the height of the side wall is formed to be greater than the length of the lower neck portion of the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7770081A JPS57192813A (en) | 1981-05-22 | 1981-05-22 | Screw checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7770081A JPS57192813A (en) | 1981-05-22 | 1981-05-22 | Screw checking device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57192813A JPS57192813A (en) | 1982-11-27 |
| JPS6412327B2 true JPS6412327B2 (en) | 1989-02-28 |
Family
ID=13641164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7770081A Granted JPS57192813A (en) | 1981-05-22 | 1981-05-22 | Screw checking device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57192813A (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0612251B2 (en) * | 1985-08-06 | 1994-02-16 | 日本発条株式会社 | Screw inspection device and inspection method using the device |
| JPS62239008A (en) * | 1986-04-11 | 1987-10-19 | Chiyuushiyou Kigyo Jigyodan | Conveying device for inspecting machine for component with head |
| JPS62266408A (en) * | 1986-05-15 | 1987-11-19 | Chiyuushiyou Kigyo Jigyodan | Converyer for screw inspecting machine |
| JPS62273407A (en) * | 1986-05-21 | 1987-11-27 | Chiyuushiyou Kigyo Jigyodan | Screw inspection apparatus |
| JPS639809A (en) * | 1986-06-30 | 1988-01-16 | Nitto Seiko Co Ltd | Conforming and nonconforming component deciding device |
| JPH0758173B2 (en) * | 1989-12-26 | 1995-06-21 | 日東精工株式会社 | Part shape recognition method and part quality judgment method |
| JP4534080B2 (en) * | 2000-10-17 | 2010-09-01 | 株式会社ユタカ | Work inspection device |
| TWM404739U (en) * | 2010-11-22 | 2011-06-01 | Ching Chan Optical Technology Co Ltd | Screw detection device |
| JP5308498B2 (en) * | 2011-11-10 | 2013-10-09 | 落合 行雄 | Screw dimension measuring device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5570702A (en) * | 1978-11-22 | 1980-05-28 | Yoshida Tsunehiro | Detector for screw pitch |
-
1981
- 1981-05-22 JP JP7770081A patent/JPS57192813A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57192813A (en) | 1982-11-27 |
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