JPH0676819B2 - Round belt holding tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a holding tool used when, for example, a round belt is directly wound around both pulleys of a machine with a desired tension. It is a thing.

(Prior Art) Conventionally, when winding a round belt directly between both pulleys of a machine, there is no special auxiliary tool, so one round belt whose length is determined according to the required tension is used for both pulleys. After wrapping it in between, with the operator pulling both ends of the round belt,
The work of connecting both ends was performed. Therefore, at least two workers were needed.

(Problems to be solved by the invention) Therefore, if both ends of the round belt are clamped by a conventionally well-known clamp member and the clamp members are held at appropriate positions of the machine, if both ends are connected, However, due to the fact that the round belt has a circular cross section and tension in one direction is applied to the round belt, the There is a possibility that the round belt cannot be securely held and the round belt may come off from the clamp member during the winding operation. Therefore, there has been a demand for the development of a holding tool capable of reliably and easily holding a round belt.

Configuration of the Invention (Means for Solving Problems) The present invention has been made in view of this problem, and as shown in the drawings of the embodiments described later, the rotating claws 7 are mounted on the mounting table 1. The rotation center shaft 8 is rotatably supported, and a holding surface 6 is formed on the mounting table 1 so as to face the holding surface 10 formed on the rotation claw 7, and the rotation center shaft 8 is rotated. The longest distance L1 between the center P and the holding surface 10 of the turning claw 7 is made smaller than the shortest distance L2 between the same turning center P and the holding surface 6 of the mounting table 1, so that the turning claw 7 When the rotation claw 7 is rotated toward the mounting table 1 from the open position A in which the holding surface 10 is separated from the holding surface 6 of the mounting table 1, the rotation center P of the rotation center shaft 8 is rotated. When the line M1 that connects the holding surface 10 of the claw 7 with the longest distance exceeds the line M2 that connects the rotation center P and the holding surface 6 of the mounting table 1 with the shortest distance, it abuts the mounting table 1. The topper portion 11a is characterized in that formed on the pivot pawls 7.

(Operation) Then, as shown in FIG. 1, when the turning claw 7 is turned to the open position A in which the holding surface 10 of the turning claw 7 is separated from the holding surface 6 of the mounting table 1, the rubber claw 7 made of rubber is used. The round belt 21 is mounted on the mounting table 1 from the rear side of the mounting table 1 so as to be along the holding surface 6, and is projected forward by an appropriate length.

When the rotating claw 7 is rotated toward the holding plate 4 from this round belt mounted state, the holding surface 10 of the rotating claw 7 gradually bites against the round belt 21 against its elastic force. Then, as shown in FIG. 3, when the rotating claw 7 is rotated to the position B where the line M1 coincides with the line M2, the biting dimension of the holding surface 10 of the rotating claw 7 with respect to the round belt 21 is measured. N2 is the maximum. When the rotating claw 7 is further rotated, the line M1 exceeds the line M2 and the biting dimension with respect to the round belt 21 is gradually reduced. As shown in FIG. 4, the stopper portion 11a of the rotating claw 7 is placed on the mounting table. At the C position where it abuts against 1, the biting dimension N3 of the holding surface 10 of the rotary claw 7 with respect to the round belt 21 becomes smaller than the maximum biting dimension N2. In this completed holding state, the holding surface 10 of the rotating claw 7 is held.
Due to the elastic restoring force of the round belt 21 against the
The turning force F in the direction of the arrow is received, and this turning force F is supported by the contact between the stopper portion 11a of the turning claw 7 and the mounting table 1.

When the rotating claw 7 is artificially rotated in the direction opposite to the arrow Q in FIG. 4, the rotating claw 7 returns to the open position A in FIG. 1 and the holding tool of the present invention is separated from the round belt 21. Can be made.

Embodiment An embodiment of the present invention will be described below with reference to the drawings. The mounting table 1 has a circular retaining plate 2 in which the belt insertion groove 2a is cut out from the upper end portion to the center portion, and the front portion (downward in FIG. 1) of the retaining plate 2 protrudes from the center portion of the front surface thereof. It consists of a fixed base plate 3 and a holding plate 4 fixed to the right side on the mounting surface 3a of the base plate 3 by a bolt 5 so as to be movable in the lateral direction within the range of the long hole 4a. Mounting surface 3a of plate 3
The center portion in the left-right direction corresponds to the bottom end bottom portion of the belt insertion groove 2a of the latch plate 2, and the left side surface 6 of the holding plate 4 is formed so as to linearly extend forward from the bottom end bottom portion of the belt insertion groove 2a. The left side surface 6 is used as a holding surface.

On the left side of the mounting surface 3a of the base plate 3, a rotating claw 7 is supported at its central portion by a bolt 8 and a nut 9 as a rotation center axis so as to be rotatable in the front-back direction along the mounting surface 3a. Has been done.
A holding surface 10 is formed at the inner end of the rotating claw 7 so as to face the holding surface 6 of the holding plate 4, and the holding surface 10 also projects from the upper end of the holding surface 10 at the inner end. A cover plate portion 11 is provided so as to cover the space facing from above from above. And
The maximum distance L1 between the rotation center P of the rotation center shaft 8 and the holding surface 10 of the rotation claw 7 is smaller than the shortest distance L2 between the rotation center P and the holding surface 6 of the mounting table 1. Is also getting smaller. Further, as shown in FIG. 1, on the outer end portion of the rotating claw 7, the rotating claw 7 is rotated to an open position A where the holding surface 10 of the rotating claw 7 is separated from the holding surface 6 of the mounting table 1. A stopper portion 12 that abuts on the left side of the retaining plate 2 of the mounting table 1 is formed. Rotating claw 7
When this is in the open position A, the rubber round belt 21 is mounted on the base plate 3 from the rear side of the retaining plate 2 of the mounting base 1 through the belt insertion groove 2a and along the holding surface 6 of the holding plate 4. It is placed on the surface 3a and is projected to the front of the base plate 3 by an appropriate length.

When the rotary claw 7 is rotated toward the holding plate 4 from this round belt mounting state, the holding surface 10 of the rotary claw 7 gradually bites against the round belt 21 against its elastic force. As shown in FIG. 3, a line M1 connecting the rotation center P of the rotation center shaft 8 and the holding surface 10 of the rotation claw 7 at the longest distance is a line M1 between the rotation center P and the mounting table 1. When the rotating claw 7 is rotated to the position B which coincides with the line M2 connecting the holding surface 6 with the shortest distance, the biting dimension N2 of the holding surface 10 of the rotating claw 7 with respect to the round belt 21 becomes maximum.

When the rotating claw 7 is further rotated, the line M1 exceeds the line M2 and the biting dimension with respect to the round belt 21 is gradually reduced, and as shown in FIG. 4, it is formed on the cover plate portion 11 of the rotating claw 7. At the position C where the stopper portion 11a thus abutted contacts the belt insertion groove 2a of the latch plate 2, the holding surface of the rotating claw 7 with respect to the round belt 21 is held.
The biting dimension N3 of 10 is slightly smaller than the maximum biting dimension N2. In this completed holding state, the holding surface 10 of the rotating claw 7 is held.
Due to the elastic restoring force of the round belt 21 against the
The turning force F in the direction of the arrow is received, and the turning force F is applied to the turning claw 7.
The stopper portion 11a and the belt insertion groove 2a of the latch plate 2 are supported by the contact. In this way, since the elastic restoring force of the round belt 21 is effectively used, the rotating claw 7 does not easily return from the complete state of holding the round belt to the open position A shown in FIG.

In addition, the cover plate portion of the rotating claw 7 is accompanied by the rotation of the rotating claw 7 described above.
Since 11 passes over the left edge of the holding plate 4 and covers the upper side of the round belt 21, the holding surface 10 of the rotating claw 7 is pressed against the round belt 21 and deformed so that the round belt 21 extends in the vertical direction. However, there is no possibility that the round belt 21 will come out upward.

A case will be described in which the round belt holding tool according to the present embodiment configured as described above is used to directly wind the round belt 21 between both pulleys of the machine. First, prepare one round belt 21 whose length is determined according to the required tension.
Both ends of 21 are held by the holding tool according to the present embodiment. At this time, both ends of the round belt 21 are placed on the placing surface 3a of the base plate 3 from the rear side of the latch plate 2 through the belt insertion groove 2a and along the holding surface 6 of the holding plate 4. Protrude an appropriate length forward. Next, wrap this round belt 21 between both pulleys of the machine, pull both ends of the round belt 21 against each other, and
When both ends 21a of 21 abut on each other as shown in FIG. 4, the latching plate 2 of the mounting table 1 is hooked to an appropriate place on the machine or clamped by a clamp to position it immovably. In this positioning state, as shown in FIG.
Tension T is applied to 21. This tension T also causes the rotating claw 7
Receives rotational force in the direction of the arrow Q, and therefore does not return to the open position A in FIG.

Then, both ends 21a of the round belt 21 are connected to each other. After the connection, when the rotating claw 7 is artificially rotated in the direction opposite to the arrow Q in FIG. 4, the rotating claw 7 returns to the open position A in FIG. 1 and rotates with the holding surface 6 of the holding plate 4. The holding tool of the present embodiment can be detached from the round belt 21 through the gap between the claw 7 and the cover plate portion 11 and the upper end opening of the belt insertion groove 2a of the latch plate 2. By this separation, the round belt 21 is wound around both pulleys with a constant tension.

When it is desired to change the holding force of the round belt 21 or when holding the round belt 21 having a different cross-sectional diameter, the bolt 5 is loosened and the holding plate 4 is moved and adjusted in the horizontal direction within the long hole 4a. .

EFFECTS OF THE INVENTION In short, according to the present invention, the circular belt 21 is formed by the rotating claw 7.
Since the elastic restoring force of is effectively used, the round belt 21 can be reliably and easily held.

[Brief description of drawings]

FIG. 1 is a plan view showing a state in which a rotating claw is in an open position in a round belt holding device according to this embodiment, FIG. 2 is a front view of the same, and FIG. 3 is a round belt with a holding surface of the rotating claw. FIG. 4 is a plan view showing a state in which the round belt is fully held, and FIG. Mounting table …… 1, Latch plate …… 2, Belt insertion groove …… 2a, Base plate …… 3, Mounting surface …… 3a, Holding plate …… 4, Holding surface ……
6, rotation claw …… 7, rotation center axis …… 8, gripping surface …… 10,
Cover plate …… 11, stopper …… 11a, stopper…
… 12, round belt… 21.

Claims (1)

[Claims] 1. A rotary claw (7) is rotatably supported on a mounting table (1) by a rotary center shaft (8), and a holding surface (10) formed on the rotary claw (7). ), A holding surface (6) is formed on the mounting table (1), and the holding surface (10) of the turning center (P) of the turning center shaft (8) and the turning claw (7) is formed.
The maximum distance (L1) between the rotation claw (7) and the rotation center (P) is smaller than the shortest distance (L2) between the holding surface (6) of the mounting table (1). When the rotation claw (7) is rotated toward the mounting table (1) from the open position (A) in which the holding surface (10) of the mounting table (1) is separated from the holding surface (6) of the mounting table (1), A line (M1) connecting the rotation center (P) of the rotation center shaft (8) and the holding surface (10) of the rotation claw (7) at the longest distance is the rotation center (P) and the mounting table ( The turning claw (7) is characterized in that a stopper portion (11a) that comes into contact with the mounting table (1) is formed at a position beyond a line (M2) connecting the holding surface (6) of 1) at the shortest distance. Round belt holding tool.