JPH0192509A - Method of assembling protector fastening band onto pipe member - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for automatically assembling a tightening band for attaching a protector to a pipe member.

(Prior art) For example, as shown in FIGS. 4 and 5, when attaching a protector 2 to an exhaust pipe l of an automobile, etc., a metal protector tightening band 3 is used to tighten the protector 2. It is attached to the exhaust pipe l. The protector tightening band 3 is fixed by tightening a bolt 5 to a nut 4 with both ends aligned.

To explain the conventional method of assembling the protector tightening band 3 to the exhaust pipe 1, as shown in FIG. Seat surfaces 7, 7 with through holes 6° 6 formed therein, and a curved band body 8 having the same diameter as the outer diameter of the exhaust pipe 1 when the seat surfaces 7, 7 abut are formed. This is done in the following manner using the protector tightening band 3.

First, since the opening of the protector tightening band (hereinafter referred to as tightening hand) 3 is set narrower than the outer diameter of the exhaust pipe 1, the exhaust pipe 1 with the protector 2 along it is pressed against the opening and the end is pressed. Insert while expanding.

Next, as for the receiver holding the nut 4, one of the bearing surfaces 7.7 at both ends of the tightening band 3 is fixed to a jig (not shown), and the bolt 5 is inserted into the through hole 6 of the other bearing surface 7. After the threaded portion 5a is manually fitted by the operator, the band body 8 is wrapped around the outer circumference of the exhaust pipe 1 using a manual nut runner (not shown), and the bolts are tightened.

In this way, as shown in FIG.
Then, a protector 2 is attached to the exhaust pipe 1.

(Problems to be Solved by the Invention) However, the conventional assembly method described above has the following problems.

First, since the band body 8 of the tightening band 3 must firmly hold the protector 2, it has a certain degree of rigidity, so when tightening bolts,
The operator has to press the band main body 8 against its rigidity against the outer periphery of the exhaust pipe l, which puts a heavy burden on the operator.

Therefore, when attempting to automate the process, there is an operation of pressing the exhaust pipe 1 against the opening of the tightening band 3 and fitting it while expanding the end.
Since detailed adjustments are not made like the work done by a worker, when fitting the exhaust pipe l to the tightening pan) C3 seat surfaces 7, 7
Alternatively, there is a risk that the band body 8 may be deformed.

Therefore, a problem arose that automation could not be achieved.

The present invention has been made in view of the above problems, and an object thereof is to automate the assembly of a tightening band to improve work efficiency.

(Means for solving the problems) Means for solving the above problems will be explained based on FIGS. 1 to 3.

First, as shown in FIG. 3, the tightening band 9 used in the method of the present invention has a semicircular part 10 shaped along the outer circumference of the exhaust pipe l on one side from the center, and a straight line on the other side. The nut 4 is welded to the seat surface 12 formed at the end.

Then, this tightening band 9 is assembled to the exhaust pipe 1 with the protector 2 along it by the following method.

For the receiver, the exhaust pipe 1 and the protector 2 attached to the outer periphery of the exhaust pipe 1 are fitted into the semicircular part 10 of the tightening band 9 set on the top surface of the jig 16, and the wrapping part 11 is formed on the arm 20. A semicircular recess 21 having a diameter that is approximately the same as the outer diameter of the exhaust pipe 1 is pressed against the outer periphery of the exhaust pipe 1, deformed and wrapped along the outer periphery, and then a nut is welded to the seat surface 12. 4, the bolt 5 is tightened by the bolt tightening unit 27 to fasten both ends.

(Function) Since the tightening band 9 has the shape of the semicircular 1f (l) and the linear wrapping portion 11, when inserting the exhaust pipe 1 with the protector 2 along the tightening band 9, the tightening band 9 There is no need to push and spread the bunt 9, and there is no need to deform it.

Therefore, it becomes possible to automate the fitting of the exhaust pipe l into the tightening band 9.

Furthermore, by automatically operating the arm 20 and tightening the nut 4 and bolt 5, the assembly of the tightening band 9 can be automated.

(Example) Next, an example of the present invention will be described based on the drawings. In this embodiment, a case will be described in which the protector 2 is attached to the exhaust pipe l using a tightening band.

First, the shape of the tightening band 9 of the present invention before being attached to the exhaust pipe 1 is shown in FIG. 3, and will be described.

On one side from the center is a semicircular part 1 along the outer periphery of the exhaust pipe 1.
0 is formed, and a linear winding part 1 is formed on the other side.
1 is formed. And, at both ends, there are seat surfaces 12,1
3 are formed, and each seat surface 12.13 is provided with a through hole 14.15 into which the threaded portion 5a of the bolt 5 is inserted. Further, a nut 4 is fixed by welding to the seat surface 12 on the side where the semicircular portion 10 is formed.

A device for automatically tightening the protector 2 on the exhaust pipe 1 using the tightening band 9 with this configuration is shown in FIGS. 1 and 2.
This will be explained using figures.

Reference numeral 16 denotes a jig with a semicircular groove 17 in which the semicircular portion 10 of the tightening band 9 fits, and a tightening hand 9 on the top surface.
A hole 18 is formed into which the nut 4 fixed to one seat surface 12 of the seat is fitted.

Further, an arm 20 is attached to the upper end of the jig 16 so as to be rotatable by a hinge pin 19. A shaped recess 21 is formed. The semicircular recess 21 of the arm 20 and the groove 17 on the side of the jig 16 sandwich the exhaust pipe l.

Next, reference numeral 22 denotes a cylinder device for rotating the arm 20. The cylinder device 22 has a main body 23 rotatably attached to a jig via a pin 24, and a rod 25 attached to the arm 20 through a pin 24. It is rotatably mounted through the

Further, the receiver is a nut 4 formed on the upper surface of the jig 16.
An automatic bolt tightening unit 27 for automatically tightening the bolt 5 to the nut 4 is provided above the hole 18 in which the bolt 5 is fitted.

The method of the present invention will be specifically explained using the above components and devices.

First, with the arm 20 open, fit the semicircular portion 10 into the groove 17 of the jig 16, and at the same time fit the nut 4 into the hole 18 of the jig 16 to set the tightening band 9. .

Next, the exhaust pipe l with the protector 2 along its outer periphery is automatically fitted into the semicircular part IO of the tightening band 9 (the state shown in FIG. 1). At this time, there is no need to push and spread the tightening band 9, so there is no deformation.

Next, the arm 20 is rotated by activating the cylinder device 22 to extend the rod 25 and rotate the arm 20.
Wrapping portion 11 of tightening band 9 in semicircular recess 21 of
is pressed against the outer periphery of the exhaust pipe l and deformed along the outer periphery. At this time, the tightening band 9 shifts laterally (to the left in the figure) because the semicircular part 10 and the nut 4 are held by the semicircular recess 17 and hole 18 of the jig 16. You won't end up doing it.

Then, the automatic bolt tightening unit 27 to which the bolt 5 is attached is lowered from above the nut 4, and the bolt 5 is tightened into the nut 4 and fastened at the seat surface 12.13.

In the manner described above, the protector 2 can be automatically attached to the exhaust pipe 1 using the tightening band 9.

In this embodiment, the protector 2 is fastened to the exhaust pipe 1, but the present invention is not limited to this, and any structure can be used as long as the fastening belt is attached to the pipe member. It may be of the form.

(Effects of the Invention) As described above in detail, the present invention provides a tightening band having a semicircular part shaped along the outer periphery of the pipe member on one side from the central part, and a linear wrapping part on the other side. After inserting the pipe member into the semicircular part, the arm deforms the wrapped part along the outer circumference of the pipe member, and then fastens both ends of the tightening band with bolts and nuts. Accordingly, the tightening of the tube member and the protector by the tightening band can be automated.

Therefore, the burden on the operator can be significantly reduced, and the cycle time of the process of assembling the tightening band can be shortened, thereby improving work efficiency.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view showing a state before a tightening band is wrapped around an exhaust pipe according to an embodiment of the present invention by an arm, and FIG. FIG. 3 is a front view with a partial cross section showing a state in which the tightening band is wrapped; FIG. 3 is a front view with a partial cross section showing the state of the tightening band according to the embodiment of the present invention before use; , a perspective view showing a state in which a protector is attached to an exhaust pipe with a tightening band, FIG. 5 is a sectional view taken along the line V-V in FIG. 4, and FIG. 6 is a state of a conventional tightening band before use. FIG. 1... Exhaust pipe (pipe member) 2... Protector 4... Nut 5... Bolt 9... Protector tightening band 10... Semicircular part 11... Wrap part 20 ports/arm 21...Four semicircular parts

Claims (1)

[Claims] (1) The semicircular part of the protector tightening band has a semicircular part shaped along the outer circumference of the pipe member on one side from the central part and a linear wrapping part on the other side, and the semicircular part is attached to the semicircular part along the outer circumference of the pipe member. A protector attached to the outer periphery of the tube member is fitted, and the wrapped portion is pressed against the tube member with a semicircular recess formed in an arm and having a diameter approximately the same as the outer diameter of the tube member, and is deformed along the outer periphery. 1. A method of assembling a protector tightening band onto a pipe member, the method comprising: tightening one end and the other end of the protector tightening band with bolts and nuts after wrapping the protector tightening band.