JPS6119378B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a tightening device for a tightening band.

As shown in FIG. 1, the fastening band A to which the present invention is directed is made by overlapping both ends of a band-shaped metal member 1 to form an annular shape, and welding a relatively rigid stay 2 to the overlapping portion. When the stake 2 is pushed down, the annular metal member 1 is tightened by a lever action using the base 2a of the stake 2 as a fulcrum, and in order to maintain this state, the pushed-down stay 2 is attached to a part of the outer periphery of the annular metal member 1. The fastening band A has a structure including a buckle member 3 for restraint, and this fastening band A is used for tightening and fixing dust-proof covers or rubber boots that cover the joints of hoses and universal joints. It is used for fastening and fixing various similar annular objects.

Now, the dust-proof rubber boots 6, 6 attached to the connection part of the constant velocity universal shaft joint, which has the shaft joint members 4, 4 at both ends of the shaft 5 as shown in FIG.
A conventional method of fastening and fixing the fastening band A will be explained by taking as an example the case where the fastening band A is fastened and fixed.

Conventionally, as shown in FIG. 3a, first, the stake 2 of the fastening band A placed on the rubber boot 6 is pushed down to the buckle 3 side by hand or by using the forward motion of a cylinder, etc., and then, as shown in FIG. As shown in b, the buckle 3 is bent and covered on the stake 2 by hitting it with a hammer or the like, and the stake 2 is fixed.

In such a method, the collapse of the stake 2 and the bending of the buckle 3 tend to be incomplete, which requires time and effort, and in particular, it is not possible to obtain a uniform tightening force and tightening fixing state, and it is not suitable for mass production. There is a risk that the rubber boot 6, shaft 5, and shaft coupling members 4, 4 may be damaged by a hammer or the like.

Therefore, the present invention aims to provide a crimping device for automatically tightening and fixing the above-mentioned fastening band A.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the structure of the present invention shown in the drawings will be described below.

FIG. 4 is a schematic perspective view showing the overall configuration of a device for automatically tightening and fixing the dust-proof rubber boots attached to the continuation part of the constant velocity universal joint shown in FIG. In the figure, B is a stake tilting mechanism, and C is a buckle tightening mechanism, which are arranged in close relation to the positioning device for the object to be fastened, which will be described below, and after the positioning is completed, the buckle tightening mechanism is The folding mechanism B is activated, and then the buckle tightening mechanism C is activated, and related operations are performed so that the fastening band is automatically tightened and fixed without any trouble.

That is, the stake tilting mechanism B can tilt the fastened object 7, which has been positioned so as not to move, to the normal position by the positioning device, and the stake 2 of the fastening band A attached thereto, toward the buckle 3 side. For example, as shown in FIG. 4, the arms 9 and 10 can be swung in a fixed position by a driving means 8 such as a solenoid, a fluid piston, or other mechanical cam. However, other than this, various devices such as a fluid piston that presses down diagonally from above can be used.

Further, the buckle crimping mechanism C approaches the buckle 3 so as to wrap around the stay 2 that has been pushed down by the mechanism B, tightens the buckle 3, holds the stay 2 in the laid down state, and tightens the buckle 3. Any configuration may be used as long as it has the function of moving away from the buckle 3, and in FIG. A driving means 43 is provided for operating the folding tool.

Of course, both mechanisms B and C are arranged so as not to interfere with each other. That is, as shown in FIG. 4, the stake tilting mechanism B is disposed on one side of a fastening band A attached to a dustproof rubber boot of a constant velocity universal joint, which is an object to be fastened, and a buckle described later is placed on the other side. A positioning mechanism E is disposed, and a buckle tightening mechanism C is disposed approximately midway between these mechanisms B and E.

Next, the configuration of the positioning device will be explained.

The positioning device moves the object to be fastened between the two mechanisms B and C.
A support mechanism D for supporting the work position of , and correct operation of both mechanisms B and C of the stay 2 and buckle 3 of the fastening band A attached to the object 7 supported by the support mechanism D. It is composed of a positioning mechanism E for positioning and holding the position.

As shown in FIG. 4, the support mechanism D includes a table 11 for placing an adherend supported on an intermediate shaft member 5 of a constant velocity universal joint, and an article 7 placed at both ends of the table 11.
It consists of positioning plates 12, 12 for rotatably holding and determining the axial position. The table 11 has a V-shaped groove 11 for radial positioning.
It has a. Further, the positioning plates 12, 12 are moved back and forth in the axial direction by air cylinders 13, 13, etc. That is, by placing the object 7 on the V-shaped groove 11a of the table and holding it between the positioning plates 12, 12 on both sides, the relative positional relationship between the object 7 and each mechanism described later is regulated.

The buckle positioning mechanism E consists of three links 14, 15, 16 and 1 as shown in FIGS.
Link mechanism 20, 21 consisting of 7, 18, 19
A shaft member 22 whose both ends are supported by this link mechanism and which is arranged parallel to the axis of the object to be fastened 7 on the front surface of the frame, a base fixed to the shaft member 22 and a stopper 23 at the tip. , 24, 25, 26 are fixedly attached to a plurality of lever members 27, 28, 29, 30.
It is made up of. Each of the above-mentioned lever members is fixed on the shaft member 22 at a position corresponding to each fastening band A of the object to be fastened 7, and furthermore, there are pads 23 and 24 fixed on the tip of each lever member. ,2
5 and 26 are the top surfaces of the corresponding fastening bands A and extend to a position where they come into contact with the buckle 3. A handle member 31 is provided at an intermediate portion of the shaft member 22. The shaft member 22 is moved to the fifth position by operating the handle.
The lever is in the upright position shown by the solid line in the diagram and the lever tilted position is shown by the dashed line.The upright position is 1 of links 15 and 18.
a first stopper member 38 provided on the frame;
32, and the tilted position is regulated by a portion of the links 14, 17 coming into contact with second stopper members 33, 39 provided on the frame. Springs 34 and 35 act on the left and right link mechanisms 20 and 21, and the upright and inclined positions of the lever members are set on both sides of the dead points of the springs 34 and 35,
The stopper stabilizes the lever member in each position. Reference numerals 36 and 37 are balance weights for making steering operations easier, and are provided at the other ends of the links 15 and 18.

In the above configuration, the shaft member 22 is
The tips of the pads 23a, 24a, 25a, 26 when the lever member is raised to the upper position.
At step a, the position of the corresponding buckle 3 is regulated.

The operating procedure of the buckle positioning device configured as described above will be explained. First, each fastening band A is attached to the rubber boot 6 in the previous step as a preset, and the assembled object 7 is placed on the stand 11. Then, the air cylinders 13, 13 of the mechanism D are used or required in order to slightly tilt the stay 2 to make the tightening band A into a semi-restricted state, and to align the mechanisms E, B, C and the tightening band A. Activate only one cylinder according to the
The object 7 to be fastened is clamped and fixed, and its position in the axial direction is determined. In this way, the object 7 and the mechanisms E, B,
When the alignment with C is completed, the stopper 2 of mechanism E
3, 24, 25, and 26 are placed in the positions indicated by solid lines in FIGS. 4 and 5 by operating the handle. After that, the object to be fastened 7 is rotated in the direction of arrow a, and the fastening band A is
The buckle 3 is brought into contact with the tip of the stopper as shown in FIG. Since the fastening band A is loosely attached to the fastened object 7, after the buckle 3 comes into contact with the stopper, the fastening band A is kept stationary and the fastened object 7 is held still.
only rotates. If the buckle 3 is located within the movement trajectory of the stopper, the buckle 3 contacts the buckle 3 while the stopper is moving to the regulation position, and the fastening band A
While rotating the buckle 3 over the object 7 to be fastened, the buckle 3 is positioned at the regulating position. When the buckles 3 of all the fastening bands A are aligned in a straight line as described above, move the pads back by operating the handle again, and then tighten the stakes 2.
The arms 9 and 10 of the folding mechanism B rotate to push down the stays 2 of each fastening band A. After that,
This state is maintained, and then the crimping mechanism C of the buckle 3 is operated to bend and cover the buckle 3 onto the stake 2, thereby completing the crimping process. Thereafter, the crimping mechanism C and the holding mechanism B of the stake 2 are caused to perform a return operation, and finally the mechanism D is returned to take out the crimped product.

As explained above, the present invention provides an annular shape in which both ends of a band-shaped metal member are overlapped in the shape of palms together on a substantially cylindrical dust-proof rubber boot mounted on a connecting portion of a constant velocity universal joint. A stick for diameter reduction operation is welded to the part, a fastening band equipped with a tightenable buckle for restraining the stake is attached to the folded position of the stay, and the stick is turned to the buckle and attached to the outer circumferential surface of the fastening band. A tightening device for a tightening band for restraining a stay in a laid down state by tightening a buckle to reduce the diameter of the tightening band by causing the stay to lie down tightly, and to hold the buckle in this state. The constant velocity universal joints mounted on the connecting part are arranged facing each other so as to be able to approach and separate from each other on the joint axis by reciprocating means such as cylinders, and are provided with positioning plates that are rotatable and serve as joint clamping means at mutually opposing ends. A support mechanism is provided on the side of the fastening band on the joint connection part supported by the support mechanism, so that it can be swung toward and away from the direction perpendicular to the joint axis, and a a positioning mechanism comprising a link mechanism having a positioning stopper and positioning the buckle in the direction of the buckle by rotation of the joint about the joint axis; It is arranged to be able to approach and separate from the direction perpendicular to the joint axis on the side, and has an arm at the tip for lowering the stake, and the stay of the fastening band, which is positioned by the circumferential positioning mechanism of the buckle, is directed toward the buckle. disposed approximately in the middle of a stake tilting mechanism for lowering the stake, and the positioning mechanism and the stake tilting mechanism, and arranged so as to be able to approach and separate from the buckle from the side of the fastening band;
It has a buckle tightening tool at the tip and a buckle tightening mechanism that tightens the buckle to restrain the fallen stake from the folded state, so that tightening work of this type of tightening band is easy. It becomes possible to automate the process, improve work efficiency, and standardize and simplify assembly work. In particular, since the axial positioning of the fastening band attached to multiple locations and the circumferential positioning of the buckle were performed,
The stake tilting mechanism and buckle tightening mechanism can be simplified, and the tightening force and tightening condition can be standardized and uniformized, reliability can be improved, and the boots can be prevented from being damaged. There are advantages such as no problems.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a fastening band, Fig. 2 is a front view of an embodiment showing how the fastening band is used, and Figs. FIG. 4 is a perspective view showing the main parts of the entire fastening band crimping device according to the present invention, and FIG. 5 is a side view of the buckle positioning mechanism. A...Tightening band, B...Stick tilting mechanism, C...Buckling mechanism, D...Supporting mechanism that supports the object to be fastened, E...Buckle positioning mechanism, 2
...Status, 3...Batch, 7...Status to be fastened.

Claims (1)

[Claims] 1. On the approximately cylindrical dust-proof rubber boot attached to the connection part of the constant velocity universal joint, both ends of a band-shaped metal member are overlapped in a palm-like manner to form a ring, and a diameter reduction operation stay is welded to the overlapped part. Then, a fastening band equipped with a buckle that can be tightened for restraining the stake is attached to the lodging position of the stake, and the above-mentioned stay is brought down tightly against the outer circumferential surface of the fastening band toward the buckle to contract the fastening band. This is a fastening band tightening device for restraining the stay in a laid down state by tightening the buckle to maintain this state. A support mechanism that is arranged facing each other on the joint axis of the shaft joint so as to be able to approach and separate from each other by reciprocating means such as cylinders, and has positioning plates rotatable at mutually opposing ends that also serve as joint holding means, and the above-mentioned support. A link that is arranged to be able to swing toward and away from the direction perpendicular to the joint axis on the side of the fastening band on the joint connection part supported by the mechanism, and has a stopper at the tip for positioning the buckle in the circumferential direction. a positioning mechanism that positions the buckle in the circumferential direction by rotating the joint around the joint axis; and a positioning mechanism that is perpendicular to the joint axis on the side of the fastening band of the support mechanism so as to face the positioning mechanism. a stake tilting mechanism that is arranged so as to be able to approach and separate from each other from a direction in which the buckle is moved, has an arm for folding down the stakes at its tip, and folds down the stakes of the fastening band positioned by the circumferential positioning mechanism of the buckle toward the buckle; , which is disposed approximately in the middle of the positioning mechanism and the stake tilting mechanism, and is arranged so as to be able to approach and separate from the buckle from the side of the fastening band, and has a buckle tightening tool at its tip; 1. A tightening device for a fastening band, comprising a buckle tightening mechanism for tightening a buckle to restrain a stake in a laid down state.