JP2007155108A

JP2007155108A - Toothed belt joint

Info

Publication number: JP2007155108A
Application number: JP2005355236A
Authority: JP
Inventors: Eiki Tamura; 栄樹田村
Original assignee: Mitsuboshi Belting Ltd
Current assignee: Mitsuboshi Belting Ltd
Priority date: 2005-12-08
Filing date: 2005-12-08
Publication date: 2007-06-21

Abstract

<P>PROBLEM TO BE SOLVED: To provide a toothed belt joint with a clamp part shortened without lowering its strength. <P>SOLUTION: The toothed belt joint 1 is provided for connecting a linear toothed belt 2 at both ends in the state of being in a looped shape so that its connection portions have reciprocating motion between toothed pulleys. It comprises a first toothed belt joint 4 having the same toothed shape as the toothed belt 2 and engaging with one end of the toothed belt 2, and a second toothed belt joint 6 having the same toothed shape as the toothed belt 2 and engaging with the other end of the toothed belt 2. The first toothed belt joint 4 and the second toothed belt joint 6 are layered on the toothed belt 2 in the state of engaging therewith. A clamping means clamps the toothed belt 2 and the toothed belt joint 1 layered thereon at its back face side and at its tooth side, respectively. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は歯付ベルト用継手に係り、特に直線状の歯付ベルトの両端を連結して、ループ状の歯付ベルトとする歯付ベルト用継手に関する。 The present invention relates to a toothed belt joint, and more particularly to a toothed belt joint in which both ends of a linear toothed belt are connected to form a looped toothed belt.

従来、工作機械等においては、テーブルを水平方向に往復運動させるために、歯付プーリと歯付ベルトからなる動力伝達機構が用いられている。このような動力伝達機構は、例えば一対の歯付プーリ間に歯付ベルトが巻き掛けられ、歯付プーリを交互に逆方向へ回転させることによって歯付ベルトに往復運動を与え、これによりテーブルを水平方向に往復移動させるようになっている。
上記歯付ベルトはループ状をなしているが、一般には直線状の歯付ベルトの両端を互いに連結することによって形成される。そして、その連結部はクランプ部材で挟持され、クランプ部材の一部を歯付ベルトに食い込ませて連結強度の向上が図られている。 Conventionally, in a machine tool or the like, a power transmission mechanism including a toothed pulley and a toothed belt is used to reciprocate the table in the horizontal direction. In such a power transmission mechanism, for example, a toothed belt is wound around a pair of toothed pulleys, and the toothed belts are alternately rotated in the opposite direction to give a reciprocating motion to the toothed belts. It is designed to reciprocate horizontally.
The toothed belt has a loop shape, but is generally formed by connecting both ends of a linear toothed belt. And the connection part is clamped by the clamp member, and the improvement of connection strength is aimed at by making a part of clamp member bite into a toothed belt.

しかしながら、上記従来技術では、ベルト連結部に引張荷重が加わったとき、クランプ部材の歯付ベルトに食い込んだ部分にだけ大きな力が作用するため、クランプ部材が変形する恐れがある。
又、クランプ部材の一部を歯付ベルトに食い込ませたときに、ベルトに孔が生じてしまうので、この孔から亀裂が発生して、歯付ベルトが弛んだり、歯付ベルトが破断したりする恐れもある。 However, in the above prior art, when a tensile load is applied to the belt connecting portion, a large force acts only on the portion of the clamp member that bites into the toothed belt, so that the clamp member may be deformed.
In addition, when a part of the clamp member is bitten into the toothed belt, a hole is formed in the belt, so that a crack is generated from the hole and the toothed belt is loosened or the toothed belt is broken. There is also a risk of doing.

そこで、特許文献１に記載されているように、直線上の歯付ベルトをループ状にしたとき該歯付ベルトの両端を連結し、その連結部が歯付プーリ間で往復運動する歯付ベルト用継手において、前記歯付ベルトと同一な歯形を有し歯付ベルトの両端にかみ合った歯付ベルトと歯付ベルト片を背面側から挟持する挟持手段と、を備えた歯付ベルト用継手が提案された。（図４） Therefore, as described in Patent Document 1, when a linear toothed belt is formed into a loop shape, both ends of the toothed belt are connected, and the connecting portion reciprocates between the toothed pulleys. A toothed belt joint comprising: a toothed belt having the same tooth shape as the toothed belt and meshing with both ends of the toothed belt; and a clamping means for holding the toothed belt piece from the back side. was suggested. (Fig. 4)

特開平４‐６９４３３号Japanese Patent Laid-Open No. 4-69433

しかし、この歯付ベルト用継手を使用した場合に、継手部分のベルト長手方向の強度を確保するために、クランプ歯数を片側で、６歯から８歯クランプする必要があり、そのために、継手部分の長さを長くなってしまい、搬送部分がクランプ部分の長さだけ短くなっていた。 However, when this toothed belt joint is used, in order to secure the strength of the joint in the longitudinal direction of the belt, it is necessary to clamp the number of clamping teeth on one side from 6 to 8 teeth. The length of the part was increased, and the conveying part was shortened by the length of the clamp part.

本発明はこのような問題点を改善するものであり、クランプ部分の強度を下げること無しに、クランプ部分を短くする歯付ベルト用継手を提供することを目的としている。 The present invention is intended to improve such problems, and an object of the present invention is to provide a toothed belt joint that shortens the clamp portion without reducing the strength of the clamp portion.

即ち、本願請求項１記載の発明は、直線状の歯付ベルトをループ状にしたとき該歯付ベルトの両端部を連結し、その連結部が歯付プーリ間で往復運動する歯付ベルト用継手において、前記歯付ベルトと同一な歯形を有し歯付ベルトの一端にかみ合った第一歯付ベルト用継手と、さらに歯付ベルトの他端においても前記歯付ベルトと同一な歯形を有し、歯付ベルトにかみ合う第二歯付ベルト用継手を備え、前記第一歯付ベルト用継手と第二歯付ベルト用継手がそれぞれ歯付ベルトとかみ合った状態で積層し、該積層した歯付ベルトと歯付ベルト用継手を背面側及び歯側から挟持する挟持手段と、を備えたことを特徴とする歯付ベルト用継手である。 That is, the invention according to claim 1 is for a toothed belt in which both ends of a toothed belt are connected when a linear toothed belt is formed into a loop shape, and the connecting part reciprocates between toothed pulleys. In the joint, the first toothed belt joint has the same tooth profile as the toothed belt and meshes with one end of the toothed belt, and the other toothed belt also has the same tooth form as the toothed belt. And a second toothed belt joint that meshes with the toothed belt, the first toothed belt joint and the second toothed belt joint laminated in a state of meshing with each toothed belt, and the laminated teeth A toothed belt joint, comprising: a toothed belt and a toothed belt joint from a back side and a tooth side.

請求項２に記載の発明は、前記歯付ベルトと歯付ベルト片は複数の歯で互いにかみ合っている請求項１に記載の歯付ベルト用継ぎ手にある。 The invention according to claim 2 is the toothed belt joint according to claim 1, wherein the toothed belt and the toothed belt piece are engaged with each other by a plurality of teeth.

本願請求項１記載の発明では、直線状の歯付ベルトをループ状にしたとき該歯付ベルトの両端部を連結し、その連結部が歯付プーリ間で往復運動する歯付ベルト用継手において、前記歯付ベルトと同一な歯形を有し歯付ベルトの一端にかみ合った第一歯付ベルト用継手と、さらに歯付ベルトの他端においても前記歯付ベルトと同一な歯形を有し、歯付ベルトにかみ合う第二歯付ベルト用継手を備え、前記第一歯付ベルト用継手と第二歯付ベルト用継手がそれぞれ歯付ベルトとかみ合った状態で積層し、該積層した歯付ベルトと歯付ベルト用継手を背面側及び歯側から挟持する挟持手段と、を備えたことを特徴とする歯付ベルト用継手であることから、継手部分の強度を低下させることなく、継手部分の長さを短くできる効果がある。 In the invention according to claim 1 of the present invention, in a joint for a toothed belt in which both ends of the toothed belt are connected when a linear toothed belt is formed in a loop shape, and the connecting part reciprocates between toothed pulleys. The first toothed belt joint having the same tooth profile as the toothed belt and meshing with one end of the toothed belt, and also having the same tooth form as the toothed belt at the other end of the toothed belt, A second toothed belt joint that meshes with the toothed belt, wherein the first toothed belt joint and the second toothed belt joint are stacked in mesh with the toothed belt, and the stacked toothed belts And a clamping means for clamping the toothed belt joint from the back side and the tooth side, so that the joint part is reduced without reducing the strength of the joint part. There is an effect of shortening the length.

請求項２に記載の発明では、前記歯付ベルトと歯付ベルト片は複数の歯で互いにかみ合っている請求項１に記載の歯付ベルト用継ぎ手であることから、継手部においてベルトの離脱やズレが起こりにくいという効果がある。 In the invention according to claim 2, since the toothed belt and the toothed belt piece are the joints for the toothed belt according to claim 1, wherein the toothed belt and the toothed belt piece are engaged with each other by a plurality of teeth, There is an effect that the deviation hardly occurs.

図１は本発明の歯付ベルト用継手１を用いてベルトを嵌合した状態の一実施形態を示した図である。図１においてベルト用継手１は、嵌合する歯付ベルトと同じ大きさの歯溝を歯付ベルトの歯ピッチと同じピッチで設けている。端部でベルト歯とベルト用継手１の歯溝３とを嵌合させたものをそれぞれ上下に積層する。積層した後、ベルト背部５側から歯付ベルトと歯付ベルト継手とを挟持手段として第一固定治具１１にて固定する。さらに、歯付ベルト歯部７側からも歯付ベルト２と歯付ベルト用継手１とを挟持手段として第二固定治具１３にて固定する。そして、第一固定治具１１と第二固定治具１３は、交互に配列する。そうすることによって、歯付ベルト２が歯付ベルト用継手１間で強固に挟持される。本実施形態では、該歯付ベルト用継手１を上下に積層して固定しているが、歯付ベルト用継手１をベルト幅方向に並べて固定しても良い。 FIG. 1 is a view showing an embodiment in which a belt is fitted using a toothed belt joint 1 of the present invention. In FIG. 1, the belt joint 1 is provided with a tooth groove having the same size as the toothed belt to be fitted at the same pitch as the tooth pitch of the toothed belt. The belt teeth and the tooth grooves 3 of the belt joint 1 fitted at the end are stacked vertically. After stacking, the first fixing jig 11 fixes the toothed belt and the toothed belt joint as clamping means from the belt back portion 5 side. Further, the toothed belt 2 and the toothed belt joint 1 are fixed by the second fixing jig 13 from the toothed belt toothed portion 7 side as clamping means. The first fixing jig 11 and the second fixing jig 13 are alternately arranged. By doing so, the toothed belt 2 is firmly clamped between the toothed belt joints 1. In the present embodiment, the toothed belt joint 1 is stacked and fixed vertically, but the toothed belt joint 1 may be fixed side by side in the belt width direction.

又、歯付ベルト用継手１の総厚は、２０ｍｍ〜５０ｍｍが好ましい。又、第一固定治具１１と第二固定治具１３は、ボルトとナットを使用し、その締め付け力は０．１ｋｇｆ・ｍ〜５．０ｋｇｆ・ｍが好ましい。 The total thickness of the toothed belt joint 1 is preferably 20 mm to 50 mm. The first fixing jig 11 and the second fixing jig 13 use bolts and nuts, and the tightening force is preferably 0.1 kgf · m to 5.0 kgf · m.

歯付ベルト２は、第３図に示すように、駆動プーリ１５とテンションプーリ１７に巻きかけられている。駆動プーリ１５とテンションプーリ１７の外周面には歯が形成されており、歯付ベルト２の歯は両プーリ１５、１７の歯とかみ合っている。駆動プーリ１５は動力源（図示せず）に接続され、交互に逆方向に回転することにより歯付ベルト２を往復運動させ、テーブル１９を矢印Ａ方向に往復移動させる。又テンションプーリ１７は歯付ベルト２に所定の張力を与えるものである。 The toothed belt 2 is wound around a drive pulley 15 and a tension pulley 17 as shown in FIG. Teeth are formed on the outer peripheral surfaces of the drive pulley 15 and the tension pulley 17, and the teeth of the toothed belt 2 mesh with the teeth of both pulleys 15 and 17. The drive pulley 15 is connected to a power source (not shown), and alternately rotates in the reverse direction to reciprocate the toothed belt 2 and reciprocate the table 19 in the direction of arrow A. The tension pulley 17 gives a predetermined tension to the toothed belt 2.

尚、歯付ベルト２及び歯付ベルト用継手１の歯形としては、平歯、はす歯、山歯、台形は、丸歯等が適用可能であり、特に限定されない。 In addition, as a tooth profile of the toothed belt 2 and the toothed belt joint 1, round teeth or the like can be applied to the flat teeth, the helical teeth, the mountain teeth, and the trapezoid, and there is no particular limitation.

次に、上述した歯付ベルト用継手の歯付ベルトへの取付け方について説明する。
まず、歯付ベルト２の端部に第一歯付ベルト用継手をかみ合わせ、第一歯付ベルト用継手４の歯溝３内に歯付ベルト歯部７を嵌合させてから、さらに、同様にして歯付ベルト２の他端の歯付ベルト歯部７に第二歯付ベルト用継手６の歯溝３をかみ合わせる。そして、歯付ベルト２が嵌合した第一歯付ベルト用継手４と第二歯付ベルト用継手６を上下に積層してクランプボルトである第一固定治具１１及び第二固定治具１３にて仮の締め付けを行う。このとき、クランプボルトは、上から締め付けるものと、下から締め付けるものとを交互に配して締め付けると良い。次にテンションプーリ１７で歯付ベルト２に張力を与える。そうすると、第１図に示すように、歯付ベルト２の一方端（図の上側のベルト用継手の右側端部）は右側へ寄って各々の歯の右側面が第一歯付ベルト用継手４の歯溝３の左側面に接触するとともに、歯付ベルト２の他方端（図の下側のベルト用継手の左側端部）は左側へ寄って各々の歯の左側面が第二歯付ベルト用継手６の歯溝３の右側面に接触する。そして、最後にクランプボルトである第一固定治具１１及び第二固定治具１３を本締付する。 Next, how to attach the above-described toothed belt joint to the toothed belt will be described.
First, the first toothed belt joint is engaged with the end portion of the toothed belt 2, and the toothed belt tooth portion 7 is fitted in the tooth groove 3 of the first toothed belt joint 4. Then, the tooth groove 3 of the second toothed belt joint 6 is engaged with the toothed belt tooth portion 7 at the other end of the toothed belt 2. The first toothed belt joint 4 and the second toothed belt joint 6 with which the toothed belt 2 is fitted are stacked one above the other so that the first fixing jig 11 and the second fixing jig 13 are clamp bolts. Tighten temporarily with. At this time, the clamp bolts may be tightened by alternately arranging the clamp bolts from above and the clamp bolts from below. Next, tension is applied to the toothed belt 2 by the tension pulley 17. Then, as shown in FIG. 1, one end of the toothed belt 2 (the right end of the upper belt joint in the figure) is moved to the right side, and the right side surface of each tooth is the first toothed belt joint 4. The other end of the toothed belt 2 (the left end of the belt joint on the lower side of the figure) is moved to the left side, and the left side of each tooth is the second toothed belt. It contacts the right side surface of the tooth groove 3 of the joint 6 for use. Finally, the first fixing jig 11 and the second fixing jig 13 which are clamp bolts are finally tightened.

本発明の歯付ベルト用継手の構成図を示した側面概略図である。It is the side schematic diagram which showed the block diagram of the coupling for toothed belts of this invention. 図１のＡ‐Ａ線に沿った断面図である。It is sectional drawing along the AA line of FIG. 本発明の歯付ベルト用継手で連結された歯付ベルトとその歯付ベルトが巻きかけられたプーリの全体構成図である。It is a whole block diagram of the toothed belt connected with the joint for toothed belts of this invention, and the pulley around which the toothed belt was wound. 従来の歯付ベルト用継手の構成図を示した側面概略図である。It is the side schematic diagram which showed the block diagram of the conventional coupling for toothed belts.

Explanation of symbols

１歯付ベルト用継手
２歯付ベルト
３歯溝
４第一歯付ベルト用継手
５歯付ベルト背部
６第二歯付ベルト用継手
７歯付ベルト歯部
９Ｖリブ
１１第一固定治具
１３第二固定治具
１５駆動プーリ
１７テンションプーリ
1 Toothed Belt Joint 2 Toothed Belt 3 Tooth Groove 4 First Toothed Belt Joint 5 Toothed Belt Back 6 Second Toothed Belt Joint 7 Toothed Belt Tooth 9 V Rib 11 First Fixing Tool 13 Second fixing jig 15 Driving pulley 17 Tension pulley

Claims

In a toothed belt joint in which both ends of a toothed belt are connected when a linear toothed belt is looped, and the connecting part reciprocates between toothed pulleys, the same tooth profile as the toothed belt A first toothed belt joint that meshes with one end of the toothed belt, and a second toothed tooth that has the same tooth profile as the toothed belt at the other end of the toothed belt and meshes with the toothed belt. A belt joint, wherein the first toothed belt joint and the second toothed belt joint are laminated in mesh with the toothed belt, and the laminated toothed belt and toothed belt joint are stacked on the back side. And a clamping means for clamping from the tooth side.

The toothed belt joint according to claim 1, wherein the toothed belt and the toothed belt piece are engaged with each other by a plurality of teeth.