WO2016002094A1 - ネジ供給器のネジ切出機構 - Google Patents
ネジ供給器のネジ切出機構 Download PDFInfo
- Publication number
- WO2016002094A1 WO2016002094A1 PCT/JP2014/071730 JP2014071730W WO2016002094A1 WO 2016002094 A1 WO2016002094 A1 WO 2016002094A1 JP 2014071730 W JP2014071730 W JP 2014071730W WO 2016002094 A1 WO2016002094 A1 WO 2016002094A1
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- WIPO (PCT)
- Prior art keywords
- screw
- rotating disk
- cutting mechanism
- slit
- disk
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/02—Arrangements for handling screws or nuts
- B25B23/04—Arrangements for handling screws or nuts for feeding screws or nuts
- B25B23/045—Arrangements for handling screws or nuts for feeding screws or nuts using disposable strips or discs carrying the screws or nuts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/001—Article feeders for assembling machines
- B23P19/003—Escapement mechanisms used therewith
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/04—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for assembling or disassembling parts
- B23P19/06—Screw or nut setting or loosening machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G47/00—Article or material-handling devices associated with conveyors; Methods employing such devices
- B65G47/74—Feeding, transfer, or discharging devices of particular kinds or types
- B65G47/84—Star-shaped wheels or devices having endless travelling belts or chains, the wheels or devices being equipped with article-engaging elements
- B65G47/846—Star-shaped wheels or wheels equipped with article-engaging elements
Definitions
- the present invention relates to a screw cutting mechanism that cuts out screws one by one from a screw feeder, and more particularly, to a cutting mechanism having a rotating disk that rotates horizontally.
- JP-A-8-155758 JP 2011-224712 A Japanese Patent Laid-Open No. 11-15667 JP 2011-208852 A
- An object of the present invention is to provide a screw cutting mechanism in which the movement of a cutting plate for cutting a screw is one-way, and the posture of the screw is made in view of the above-described conventional problems.
- An object of the present invention is to provide a screw cutting mechanism in which a screw is stably supplied, a screw is stably supplied to a driver bit, and the cutting operation is accurate and smooth.
- the invention of claim 1 is a screw cutting mechanism for cutting screws one by one from a screw feeder, the cutting mechanism being provided with a rotating disk that rotates horizontally,
- the outer periphery of the rotating disk has a recess for accommodating a screw that opens toward the rotating shaft, and fits into a circular cavity provided in the upper part on the frame body side, and the rotating shaft has the rotating disk on the upper part on the frame body side.
- a slit disk provided with a slit corresponding to the recess and a drive gear are fixed, and a detection mechanism for detecting the slit of the slit disk is provided,
- the screw feeding mechanism of the screw feeder is characterized in that a stepping motor is controlled by a detection signal of a detection mechanism to drive the driving gear and to rotate the rotating disk at a predetermined angle in one direction.
- the concave portions are provided on the outer periphery of the rotating disk at equal intervals.
- the screw cutting mechanism of the screw feeder according to the second aspect four concave portions are provided at equal intervals of 90 degrees.
- the conventional screw feeder is a rotating disk that rotates horizontally in one direction compared to the screw cutting that reciprocates, the supply interval is increased.
- the screw S can be shortened without causing the screw S to jump out due to an impact at the time of stopping, and the screws S can be reliably separated one by one, so that the screw S does not bite or overlap, and the posture of the screw S is stable, The effect
- the rotating disk can be easily fixed to the position of the fixed bearing part, and further, the adjustment bearing part that can be fixed so that the mounting position can be adjusted is attached to the lower part on the frame body side. Since it is provided, it is possible to finely adjust the position of the adjustment bearing portion and accurately align the outer periphery of the rotary disk so as not to contact the inner wall of the circular cavity at the upper part on the frame side. Furthermore, even if the discharge port of the screw feeder is in a position where the bit B is difficult to enter, the take-out position of the screw S can be positioned in front of the screw cutting mechanism 2 and the screw feeder 1 by the rotating disk.
- the slit disk is provided with a slit corresponding to the position of the concave portion of the rotating disk, and since this slit disk is coaxial with the rotating disk, a detecting mechanism for detecting the slit is provided to accurately detect the slit of the rotating disk regardless of the concave portion. Since the stop position can be controlled in response to this, even if the screw S is caught on the rotating disk and the rotation stops and the stepping motor steps out, the detection mechanism detects the slit of the slit disk and the concave It can be returned to a predetermined original position. Further, according to the invention of the screw cutting mechanism of the screw feeder according to claims 2 and 3, since the recesses are provided at equal intervals on the outer periphery of the rotating disk, the screw removal position is efficiently linked with the movement with the bit. Can be supplied to.
- FIG. 1 is an external perspective view of a screw cutting mechanism 2 of the screw feeder of FIG.
- the front view of the screw supply mechanism 2 of FIG. FIG. 2 is a plan view from above of FIG. Bottom view from below in FIG.
- the external appearance perspective view of the screw feeder 1 of Example 2 of this invention It is an external appearance perspective view of the screw cutting mechanism 2 of the screw feeder of FIG.
- the present invention is a screw cutting mechanism that cuts and separates screws one by one from a screw feeder such as a screw or eyelet so that a driver such as a robot or a worker can pick up the screw.
- the cutting mechanism is provided with a rotating disc that rotates horizontally, and since this rotating disc rotates only in one direction, the rotation speed can be increased, and the screw cutting and feeding position supply speed is also increased.
- the “screw” referred to in the present invention means a screw and a screw such as an eyelet similar to the screw.
- FIG. 1 is an overall perspective view in which the screw cutting mechanism 2 is incorporated in the screw feeder 1 of the first embodiment.
- the screw feeder 1 is operated with the switch 13 turned on, and the upper portion of the screw feeder 1 is inserted.
- the screw S is inserted from the port 14, the screw is aligned with the alignment rail 15, and is sequentially supplied from the discharge port 11 of the screw S at the tip.
- FIGS. 2 to 5 are also FIG. 1 of the first embodiment, and are referred to together.
- the screw receiving portion (FIG. 4: receiving recess 2113) of the screw cutting mechanism 2 is the screw S of the screw feeder 1 shown in FIG.
- a bit guide member 12 see FIG.
- a bit B which is a screwdriver
- the screw feeder 1 side at the upper front of the screw feeder 1 at a position in front of the screw outlet 11 (see FIG. 1). ing. Accordingly, the bit B is guided by the bit guide member 12 and guided by the screw supply portion (supply hole portion 2115) of the screw cutting mechanism 2, and the screw S is taken out.
- the structure of the screw feeder 1 may be a known one as long as the screw S is supplied by being sequentially aligned.
- the screw feeder as in Patent Document 2 may be used.
- the frame body 21 of the screw cutting mechanism 2 includes an upper upper frame body 211, an intermediate middle frame body 212, and a lower lower frame body 213, and a rotating disk 221 is rotatably accommodated in the upper frame body 211.
- a circular cavity 2111 is provided.
- the rotating disk 221 to be fitted and housed is a main member of the cutting member 22, and a rotating shaft 223 is formed by a fixed bearing portion 2121 provided in the middle frame body 212 and an adjustment bearing portion 2131 provided in the lower frame body 213. Is supported, and is configured to rotate horizontally on the same plane as the upper surface of the upper upper frame 211.
- a notch-shaped recess 222 that opens toward the rotating shaft 223 and accommodates the screw S is provided on the outer periphery of the rotating disk 221, and the recess 222 is provided on the outer periphery of the rotating disk 221 at equal intervals. Then, four are provided at equal intervals of 90 degrees.
- a receiving recess 2113 is provided that forms a receiving portion that receives a screw S that matches the shape of the recess 222, and the other side of the upper frame body 211 that faces the other side.
- the edge 2114 is also provided with a supply recess 2115 that forms a supply portion for the bit B with a screw S that matches the shape of the recess 222.
- the supply hole portion 2115 is provided with an outer opening 2116, but a stopper 214 is provided so that the supplied screw S is not detached, and the stopper 214 is centered on a rotating shaft 2141 as shown in FIG.
- the arm portion 2142 rotates, the tip portion 2143 of the arm portion 2142 is pressed with a weak force so as not to remove the screw S supplied by the spring 2144, and the bit B is fitted to the head of the screw S and moved. In this case, the tip 2143 is rotated and retracted by the moving force of the bit B, and the screw S can be taken out.
- a screw detection mechanism 24 for detecting the presence or absence of the screw S is provided across the supply recess 2115 of the upper upper frame 211, and a pair of light emitting elements 241 (diodes) and light receiving elements (phototransistors) 242 are provided on the left and right.
- the start / stop of driving of a stepping motor 234, which will be described later, is controlled by a detection signal of the screw detection mechanism 24. In other words, when the screw S is sensed, the rotation of the stepping motor 234 is stopped.
- the rotating shaft 223 of the rotating disk 221 is pivotally supported at two locations, but is pivotally supported by the fixed bearing portion 2121 of the middle frame 212 that is an intermediate portion on the frame body side, and is provided on the lower frame 213 at the lower portion on the frame body side.
- An adjustment bearing portion 2131 that can be fixed so that the attachment position can be adjusted is provided and pivotally supported.
- the adjustment bearing portion 2131 can be adjusted and fixed to the lower frame body 213 so that the mounting position can be finely adjusted in the front, rear, left and right directions, and the rotating disk 221 can rotate smoothly without being biased to the circular cavity 2111 of the upper frame body 211.
- the adjustment bearing portion 2131 is at a fixed position of the lower frame body 213, the fixed position is slightly shifted due to distortion of the frame body 21 and the rotating disk 221 is slightly shifted with respect to the circular cavity 2111. It is provided because it is necessary to adjust to an appropriate position. That is, alignment can be performed so that the outer periphery of the rotating disk 221 does not come into contact with the inner wall of the circular cavity 2111, thereby making the rotation of the rotating disk 221 smooth.
- the specific structure of the adjusting bearing portion 2131 is that the adjusting bearing portion 2131 is assembled integrally with the mounting member 2132, and bolt receiving portions 2133 are provided at two locations of the mounting member 2132, while the lower frame body 213 also has a bolt diameter.
- a pair of mounting holes 2135 that are slightly larger than the mounting holes 2135 are provided.
- Bolts 2134 are inserted into the mounting holes 2135 (see FIG. 5) from below, screwed into the mounting members 2132, and the positions of the rotating disks 221 are confirmed. Tighten and tighten firmly. 2 (FIG. 7) and FIG. 5, the bolt 2134 can be moved in all directions of the two-dimensional XY. For this reason, the two bolts 2134 are not dropped from the large mounting hole 2135. If necessary, a large washer or the like may be interposed in the bolt head.
- the predetermined position stop mechanism 23 of the rotating disk 221 will be described.
- the rotating shaft 223 between the fixed bearing portion 2121 and the adjusting bearing portion 2131 is narrower toward the axis corresponding to the recess 222 in the proper position of the rotating shaft 223 between the adjusting bearing portion 2131 and the rotating disk 221.
- a slit disk 231 provided with a slit 232 and a coaxial drive gear 233 are fixed, and the drive gear 233 is controlled and rotated by a stepping motor 234 for speed control.
- a detection mechanism 235 for detecting the slit 231 of the slit disk 231 is provided in the middle frame 212 on the frame body 21 side, and this detection mechanism 235 has a pair of light emitting elements 2351 (diodes) up and down across the slit disk 231.
- the stepping motor 234 is controlled by the detection signal of the detection mechanism 235 to drive the drive gear 233, and the rotary disk 221 is moved in one direction. Rotate to a predetermined angle.
- the detecting mechanism 235 detects the slit 232 of the slit disk 231 and returns it to the original position. Can do.
- the detection signal of the screw detection mechanism 24 detects that the screw S is not present in the supply hole 2115 of the screw S of the screw cutting mechanism 2, the stepping motor 234 is driven, and the receiving recess 2113 of the screw S is The stepping motor 234 is driven until the screw S is received from the discharge port 11 of the feeder 1 and stored in the recess 222 of the rotary disk 221 until the screw S is present in the supply hole 2115 of the screw S of the screw cutting mechanism 2.
- the rotating disk 221 is rotated and stops at the supply hole 2115 that coincides with the recess 222 in which the screw S is accommodated.
- an operator operates an automatic driver to guide the bit B to the bit guide member 12 (see FIG. 1) and take out the screw S.
- the rotary disk 221 is arranged at a position where the screw cutting mechanism 2 and the bit B on the front surface of the screw supplier 1 can easily enter. It becomes possible.
- the screw S is taken out, and it is detected by the detection signal of the screw detection mechanism 24 that there is no screw S in the supply hole 2115 of the screw S of the screw cutting mechanism 2, and the slit 232 (see FIG. 2 and 3) is detected, and the rotating disk 221 rotates and stops at a position where the concave portion 222 coincides with the receiving concave portion 2113 and the supply hole portion 2115.
- the stepping motor 234 is driven, the screw S is received in the receiving recess 2113 of the screw S from the discharge port 11 of the screw feeder 1, is stored in the recess 222 of the rotating disk 221, and the screw S of the screw cutting mechanism 2 is The stepping motor 234 is driven until the screw S is present in the supply hole 2115, the rotating disk 221 is rotated, and stops at the supply hole 2115 that coincides with the recess 222 in which the screw S is accommodated. Thereafter, this is repeated, and the rotating disk 221 is rotated by 90 degrees and continued until the operation switch 13 is turned off.
- the operation and effect of the screw cutting mechanism of the screw feeder according to the first embodiment is configured as described above, since the cutting mechanism 2 is a rotating disk 221 that rotates horizontally, the posture of the screw S can be stabilized. Since the screw S is stably supplied to the driver bit, the vertical movement of the screw S is accurate, and the concave portions 222 are provided at 90 degrees at equal intervals on the outer periphery of the rotary disk 221, so that the screws S are surely one by one. Since they can be separated, the screws do not bite or overlap, the screw posture is stable, the screw can be supplied stably to the driver bit, and the screw S is taken out efficiently in conjunction with the movement with the bit B. Can be supplied to the location.
- the rotating disk 221 positions the screw S to be taken out in front of the screw cutting mechanism 2 and the screw feeder 1, and the bit B It becomes possible to arrange
- the screw supply part supply hole part 2115
- the screw supply hole part 2115 can be disposed at an arbitrary position away from the discharge port 11 as long as it is the outer periphery of the rotary disk 221. .
- the rotating shaft 223 can be easily fixed at the position of the fixed bearing portion 121, and the lower lower portion on the frame body 21 side.
- the frame 213 is provided with an adjustment bearing portion 2131 that can be fixed so that the mounting position can be adjusted, the upper rotating disk 221 on the frame 21 side is finely adjusted so that the outer periphery of the rotating disk 221 contacts the inner wall of the circular cavity 2111. It can be accurately aligned and fixed so that it does not.
- the detection mechanism 235 for detecting the slit 232 is provided so as to be fixed to the slit disk 231 provided with the slit 232 corresponding to the concave portion 222 of the rotary disk 221 so as to be coaxial with the rotary shaft 223 of the rotary disk 221. Even in such a case, it can be controlled from the signal of the detection mechanism 235 so that the concave portion 222 of the rotating disk 221 stops at a predetermined stop position accurately.
- the second embodiment is different from the first embodiment in the configuration in which the supply hole portion 2115, the stopper 214, and the bit guide member 12 in the first embodiment are not provided, and the other configurations are the same as those in the first embodiment.
- the description of Example 1 is incorporated.
- the screw S is accommodated in the concave portion 222 of the rotary disk 221 and rotated so that the screw supply portion 2117 is separated from the receiving concave portion 2113 and stops at a predetermined position, that is, at a predetermined position of the side edge portion 2114 in the second embodiment.
- the screw S housed in the recess 222 is fitted to the bit B of the driver by a robot (not shown) or the like, moved to a predetermined assembly position, and screwed into the screw hole of the target screw part of the target assembly. can do.
- the supply hole portion 2115, the stopper 214, and the bit guide member 12 are not necessary.
- the operation and effect of the screw cutting mechanism of the screw feeder according to the second embodiment are the same as those of the first embodiment, the description thereof is omitted.
- the present invention is not limited to the first and second embodiments as long as the characteristics of the present invention are not impaired.
- the screw receiving recess and the supply hole or supply portion are provided at the opposite positions of 180 degrees, but the recess of the rotating disk is coincident with the receiving recess of the screw S, the preceding screw is not required.
- four concave portions on the outer periphery of the rotating disk are provided at equal intervals of 90 degrees, but eight may be provided at equal intervals of 45 degrees, or more, or conversely two. .
- Screw (type) B ... Bit 1 ... Screw feeder 11 ... Discharge port 12 ... Bit guide member 13 .... (operation) switch, 14 .... slot, 15 .... alignment rail, 2.
- Screw cutting mechanism 21..Frame body, 211..Upper frame body, 2111..Circular cavity, 2112 .. (one) side edge, 2113 .. receiving recess, 2114 .. (the other) side edge portion, 2115... Supply hole (screw supply portion), 2116 .. Opening outside, 2117 .. Screw supply part (Example 2), 212 .. Middle frame body, 2121 .. Fixed bearing part, 213 .. Lower frame body, 2131 .. Adjusting bearing portion, 2132 ..
- Mounting member 2133 ⁇ Bolt receiving portion, 2134 ⁇ ⁇ Bolt, 2135 ⁇ ⁇ Mounting hole 214 ⁇ ⁇ Stopper, 2141 ⁇ ⁇ Rotary shaft, 2142 ⁇ ⁇ Arm portion, 2143 .. Tip portion, 2144... Spring, 22 .. Cut-out member, 221 .. Rotating disk, 222 .. Recess, 223 .. Rotating shaft, 23 .. Predetermined position stop mechanism, 231 .. slit disk, 232 .. slit 233 .. drive gear, 234 .. stepping motor, 235 .. (Positioning) detection mechanism, 2351... Light emitting element, 2352. 24 .. Screw detection mechanism, 241... Light emitting element, 242 .. Light receiving element,
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Abstract
Description
このため、特許文献1の特開平8-155758号公報に示すように、ネジが供給される取り出し部にビットの先端を案内するガイド部材を設けて、直接ビットで取り出すものであった。この機構では、ストパーにより順次ネジが繰り出されるが、ネジの頭が広い場合や特殊な形状の場合には、整列状態が崩れたりする不都合があった。
このため、特許文献2の特開2011-224712号公報に示すように、上下左右に往復回動するネジ切出円盤を用いてネジを切り出すネジ切出機構も提案されている。
本発明の目的は、上記の従来の問題点に鑑みてなされたもので、ネジを切り出す切出板の移動が一方向であるネジ切出機構を提供するものであり、また、ネジの姿勢を安定させてドライバビットにネジを安定して供給し、切り出す動作が正確でスムーズなネジ切出機構を提供しようとするものである。
前記調整軸受部と前記回転円盤の間の回転軸の適所には前記凹部に対応したスリットを設けたスリット円盤と駆動歯車とを固着し、該スリット円盤のスリットを検知する検知機構を設け、該検知機構の検知信号によりステッピングモーターを制御して前記駆動歯車を駆動し、前記回転円盤を一方向に所定の角度に回転することを特徴とするネジ供給器のネジ切出機構である。
請求項2の発明は、請求項1に記載のネジ供給器のネジ切出機構において、前記凹部は回転円盤の外周に等間隔で設けられていることを特徴とする。
請求項3の発明は、請求項2に記載のネジ供給器のネジ切出機構において、前記凹部は4個で角度90度の等間隔で設けられていることを特徴とする。
また、枠体側の中間部に固定軸受部を設けたので、回転円盤を固定軸受部の位置に容易に固定でき、更に、枠体側の下部には取付け位置が調整可能に固定できる調整軸受部を設けたので、この調整軸受部の位置を微調整して、枠体側の上部に回転円盤の外周が円形空洞の内壁に接触しないように正確に調芯することができる。
更に、ネジ供給器の排出口がビットBが入りづらい位置にあっても、回転円盤によって、ネジSの取り出し位置をネジ切出機構2及びネジ供給器1の前面に位置させることができ、ビットBが入易い位置に配置することが可能となる。
また、スリット円盤に回転円盤の凹部の位置に対応するスリットを設け、このスリット円盤が回転円盤と同軸であることから、スリットを検知する検知機構を設けて凹部に関わりなく正確に回転円盤のスリットに対応して停止位置を制御できるので、ネジSが回転円盤に引っ掛かるなどして回転が止まり、ステッピングモーターが脱調した場合でも、スリット円盤のスリットを検知機構がそれを検知して、凹が所定の元の位置に復帰させることができる。
また、請求項2、3のネジ供給器のネジ切出機構の発明によれば、回転円盤の外周に等間隔に凹部を設けたので、ビットとの動きに効率よく連動してネジを取出位置に供給することができる。
なお、本発明で言う「ネジ」とは、ネジ及びネジに類似するハトメ等のネジ類を意味する。
図1は実施例1のネジ供給器1にネジ切出機構2を組み込んだ全体の斜視図であるが、ネジ供給器1はスイッチ13をONにして稼働させ、ネジ供給器1の上部の投入口14からネジSを投入し、ネジを整列レール15に整列させ、その先端のネジSの排出口11から順次供給する。
図2から図5も実施例1の図1であるので併せて参照すると、ネジ切出機構2のネジ受取部(図4:受取凹部2113)は、図2に示すネジ供給器1のネジSを排出する排出口11(図1参照)に位置に接続し、ネジ供給器1の前方上方にはドライバーであるビットBのビットガイド部材12(図1参照)がネジ供給器1側に取り付けられている。これにより、ビットBはビットガイド部材12に案内されネジ切出機構2のネジ供給部(供給孔部2115)に案内され、ネジSを取り出す。
ネジ供給器1の構造は、順次整列してネジSが供給されるものであれば、公知のものでよく、例えば、前記特許文献2のようなネジ供給器でもよい。
ネジ切出機構2の枠体21は、上部の上段枠体211、中間部の中段枠体212、下部の下段枠体213から構成され、上段枠体211には回転円盤221が回転可能に収納される円形空洞2111が設けられている。
この嵌合収納される回転円盤221は切出部材22の主要部材で、中段枠体212に設けられた固定軸受部2121と、下段枠体213に設けられた調整軸受部2131とによって回転軸223が支持され、上部の上段枠体211の上面と同じ平面で水平に回転するように構成されている。
この回転円盤221の外周には回転軸223に向かって開口しネジSを収納する切り欠き状の凹部222が設けられ、この凹部222は回転円盤221の外周に等間隔で設けられ、本実施例では、角度90度の等間隔で4個設けられている。
この供給孔部2115には外側開口2116が設けられるが、供給状態のネジSが離脱しないようにストッパー214が設けられ、このストッパー214は、図4に示されるように、回動軸2141を中心に腕部2142が回動し、腕部2142の先端部2143がバネ2144によって供給されるネジSを離脱しないように弱い力で押さえ、ビットBがネジSの頭部に嵌合して移動した場合には、ビットBの移動する力により先端部2143が回動退避して、ネジSが取り出せる。
なお、上部の上段枠体211の供給凹部2115を挟んで、ネジSの存否を検出するネジ検知機構24が設けられ、左右に一対の発光素子241(ダイオード)と受光素子(フォトトランジスタ)242が設けられており、ネジ検知機構24の検知信号により、後述するステッピングモーター234の駆動の開始・停止を制御する。言い換えれば、ネジSを感知するとステッピングモーター234の回転が停止する。
調整軸受部2131の具体的構成は、調整軸受部2131は取付部材2132に一体に組み立てられ、この取付部材2132の2箇所にボルト受け部2133が設けられ、一方、下段枠体213にもボルト径よりも多少大きな一対の取付孔2135が設けられ、ボルト2134を下から取付孔2135(図5参照)に挿入し、取付部材2132に螺合し、回転円盤221の位置を確認しながら取付部材2132を強固に螺合して締め付け固着する。なお、図2(図7)、図5において、ボルト2134は2次元X-Yの全ての方向に移動可能であるが、そのために大きめな取付孔2135から2個のボルト2134が脱落しないように、ボルト頭部に必要に応じて大きめのワッシャー等を介在させておけばよい。
調整軸受部2131と回転円盤221の間の回転軸223の適所、本実施例では、固定軸受部2121と調整軸受部2131の間の回転軸223には、凹部222に対応した軸に向かって細いスリット232を設けたスリット円盤231と同軸の駆動歯車233とを固着し、駆動歯車233をステッピングモーター234で速度制御して制御回転する。
一方、枠体21側の中段枠体212にはスリット円盤231のスリット231を検知する検知機構235が設けられ、この検知機構235はスリット円盤231を挟んで上下に一対の発光素子2351(ダイオード)と受光素子(フォトトランジスタ)2352を設けて、ネジ供給器1の駆動に際しては、この検知機構235の検知信号によりステッピングモーター234を制御して駆動歯車233を駆動し、回転円盤221を一方向に所定の角度に回転する。
したがって、ネジSが回転円盤221に引っ掛かるなどして回転が止まり、ステッピングモーター234が脱調した場合でも、スリット円盤231のスリット232を検知機構235がそれを検知し、元の位置に復帰させることができる。
ここで、ネジSのネジ受取部(受取凹部2113)からネジ供給部(供給孔部2115)の移動について、主に図4及び図5に沿って説明する。
まず、稼働スイッチ13(図1参照)をONにすると、所定位置停止機構23(図2,3参照)のスリット232を検出して回転円盤221を凹部222が受取凹部2113及び供給孔部2115と一致する位置に回転し停止する。
次に、ネジ検知機構24の検知信号により、ネジ切出機構2のネジSの供給孔部2115にネジSが無いことを感知し、ステッピングモーター234が駆動され、ネジSの受取凹部2113にネジ供給器1の排出口11からネジSを受け取り、回転円盤221の凹部222に収納し、ネジ切出機構2のネジSの供給孔部2115にネジSが在るまで、ステッピングモーター234が駆動され、回転円盤221は回転され、ネジSを収納した凹部222と一致した供給孔部2115で停止する。
供給孔部2115では、作業員等により自動ドライバーを操作してビットBがビットガイド部材12(図1参照)に案内されネジSを取り出す。この際、ネジ供給器1の排出口11がビットBが入りづらい位置にあっても、回転円盤221によって、ネジ切出機構2及びネジ供給器1の前面のビットBが入易い位置に配置することが可能となる。
以降は、ステッピングモーター234が駆動され、ネジSの受取凹部2113にネジ供給器1の排出口11からネジSを受け取り、回転円盤221の凹部222に収納し、ネジ切出機構2のネジSの供給孔部2115にネジSが在るまで、ステッピングモーター234が駆動され、回転円盤221は回転され、ネジSを収納した凹部222と一致した供給孔部2115で停止する。以後はこれを繰り返し、回転円盤221を90度ずつ回転させ、稼働スイッチ13をOFFにするまで続行する。
また、ネジ供給器1の排出口11がビットBが入りづらい位置あるが、回転円盤221によって、ネジSの取り出し位置が、ネジ切出機構2及びネジ供給器1の前面に位置し、ビットBが入易い位置に配置することが可能となる。なお、回転円盤221の上面が水平であることから、回転円盤221の外周であれば、排出口11から離れた任意の位置にネジ供給部(供給孔部2115)を配置することが可能である。
更に、枠体21側の中間部の中段枠体212に固定軸受部121を設けたので、回転軸223を固定軸受部121の位置に容易に固定でき、更に、枠体21側の下部の下段枠体213には取付け位置を調整可能に固定できる調整軸受部2131を設けので、枠体21側の上部の回転円盤221を微調整して、回転円盤221の外周が円形空洞2111の内壁に接触しないように正確に調芯して、正確に固定することができる。
また、回転円盤221の回転軸223に同軸に、回転円盤221の凹部222に対応したスリット232を設けたスリット円盤231と固着し、このスリット232を検知する検知機構235を設けたので、どのような場合でも検知機構235の信号から、正確に回転円盤221の凹部222が所定の停止位置に停止するように制御できる。
実施例2が実施例1と異なるのは、実施例1の供給孔部2115やストッパー214やビットガイド部材12を設けない構成で、他の構成は実施例1と同じであるので、説明は実施例1の説明を援用する。
実施例2では、回転円盤221の凹部222にネジSを収納して回転しネジ供給部2117は受取凹部2113から離して、所定の位置、実施例2では側縁部2114の所定位置で停止し、凹部222に収納されたネジSをロボット(図示せず)等によりドライバーのビットBに嵌合して、所定の組立位置に移動させ、対象組立物の螺合対象部位のネジ孔に螺合することができる。
このように、実施例2は自動プログラミングさせたビットBの位置や動作は決まった動作をするので、供給孔部2115やストッパー214やビットガイド部材12が必要ない。
また、実施例2のネジ供給器のネジ切出機構の作用・効果も、実施例1と同じであるので説明は省略する。
1・・ネジ供給器、11・・排出口、12・・ビットガイド部材、
13・・(稼働)スイッチ、14・・投入口、15・・整列レール、
2・・ネジ切出機構、
21・・枠体、211・・上段枠体、2111・・円形空洞、
2112・・(一方の)側縁部、2113・・受取凹部、
2114・・(他方の)側縁部、2115・・供給孔部(ネジ供給部)、
2116・・外側開口、2117・・ネジ供給部(実施例2)、
212・・中段枠体、2121・・固定軸受部、
213・・下段枠体、2131・・調整軸受部、2132・・取付部材、
2133・・ボルト受け部、2134・・ボルト、2135・・取付孔
214・・ストッパー、2141・・回動軸、2142・・腕部、
2143・・先端部、2144・・バネ、
22・・切出部材、221・・回転円盤、222・・凹部、
223・・回転軸、
23・・所定位置停止機構、231・・スリット円盤、232・・スリット
233・・駆動歯車、234・・ステッピングモーター、
235・・(位置決め)検知機構、2351・・発光素子、2352・・受光素子、
24・・ネジ検知機構、241・・発光素子、242・・受光素子、
Claims (3)
- ネジ供給器からネジを1本ずつ切り出すネジ切出機構であって、
該切出機構は水平に回転する回転円盤が設けられ、
該回転円盤の外周には回転軸に向かって開口するネジを収納する凹部を有するとともに、枠体側の上部に設けた円形空洞に嵌合し、
前記回転軸は、枠体側の上部に前記回転円盤を取り付け、枠体側の中間部に固定軸受部を設け、枠体側の下部には取付け位置が調整可能に固定できる調整軸受部を設け、
前記調整軸受部と前記回転円盤の間の回転軸の適所には前記凹部に対応したスリットを設けたスリット円盤と駆動歯車とを固着し、
該スリット円盤のスリットを検知する検知機構を設け、
該検知機構の検知信号によりステッピングモーターを制御して前記駆動歯車を駆動し、前記回転円盤を一方向に所定の角度に回転することを特徴とするネジ供給器のネジ切出機構。 - 前記凹部は回転円盤の外周に等間隔で設けられていることを特徴とする請求項1に記載のネジ供給器のネジ切出機構。
- 前記凹部は4個で角度90度の等間隔で設けられていることを特徴とする請求項2に記載のネジ供給器のネジ切出機構。
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US20170129079A1 (en) | 2017-05-11 |
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KR20160031020A (ko) | 2016-03-21 |
JP2016013596A (ja) | 2016-01-28 |
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EP3165325B1 (en) | 2018-11-28 |
HK1225690B (zh) | 2017-09-15 |
CN105992672B (zh) | 2017-12-26 |
KR101797634B1 (ko) | 2017-11-15 |
TW201601870A (zh) | 2016-01-16 |
CN105992672A (zh) | 2016-10-05 |
TWI549772B (zh) | 2016-09-21 |
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