JPH0540997Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a device for flipping over the outer cylindrical portion of a seal member, particularly a rubber steering seal, for flipping over and inverting the outer cylindrical portion of the seal member.

(Prior Art) Conventionally, the work of flipping up and inverting the outer cylinder portion of a steering seal has been done manually.

The steering seal 100 is shown in FIG. The steering seal 100 includes a seal lip portion 10
1, and an annular outer cylinder portion 103 protruding from the seal member main body 102 toward one end in the axial direction.

The outer cylindrical portion 103 has a tip 104 having a diameter slightly smaller than the diameter of the seal member main body 102.

Such a steering seal 100 is made by bending the outer cylindrical portion 103 outward in the final step and flipping it outward so that the outer cylindrical portion 103 and the seal member main body 102 are doubled.

(Problems to be Solved by the Invention) However, according to the manufacturing method of the steering seal 100 of the prior art, the outer cylinder portion 103 having a small diameter is replaced with the seal member main body 102 having a larger diameter.
When the opening is bent outward, a large tensile force is applied to the outer cylindrical portion 103, so that the opening cannot be easily reversed, making the reversing operation difficult.

Also, according to manual steering seal 100
This causes variations in the reversal width of the outer cylinder part 103, making it difficult to maintain a constant reversal width, and the outer cylinder part 10
There was a problem in that the number 3 sometimes returned, resulting in variations in product quality.

The present invention has been made in view of the above-mentioned problems, and its purpose is to provide a device for reversing the outer cylinder part of a sealing member, which can automatically reverse the outer cylinder part of the sealing member. be.

(Means for Solving the Problems) The present invention having the above object is a seal member having an annular outer cylindrical portion protruding from the seal member main body in one axial direction at the outer diameter end of the seal member main body. A device for inverting an outer cylindrical portion of a device, comprising: a base on which the sealing member is placed; and a base provided on the base to hold the sealing member with the tip of the outer cylindrical portion facing in a direction protruding from the base. a guide jig for moving the device; and a device main body comprising a hollow guide chamber that faces the base and is open toward the base and is disposed so as to be movable in a direction toward and away from the base. , a center part inserted into the guide chamber of the device main body from the base side so as to be freely protrusive and retractable; a biasing means provided in the guide chamber for biasing the center part in a direction to protrude from the guide chamber; an inclined surface that is provided on the outer periphery of the part and has a maximum diameter that gradually increases in diameter as it moves away from the base and is larger than the tip of the outer cylindrical part of the sealing member; The seal member includes an annular reversing guide surface that comes into contact with the tip of the outer cylindrical portion of the seal member whose diameter is expanded by the inclined surface.

(Function) According to the present invention, the tip of the outer cylindrical portion of the seal member is held in the direction of protruding from the base by a guide jig provided on the base, and the held seal member is Move the main body of the device toward the outer cylinder.

Then, the center portion inserted into the device main body so as to be freely retractable is inserted into the outer cylindrical portion of the seal member main body.

At this time, the outer cylinder part of the seal member is pushed outward in the radial direction by the inclined surface whose maximum diameter is larger than the tip of the outer cylinder part of the seal member and whose diameter gradually increases as it moves away from the base. go.

After the center portion hits the bottom of the sealing member held by the guide jig, the main body of the apparatus moves toward the outer cylinder portion of the sealing member against the urging force of the urging means.

Then, the annular reversing guide surface at the open end of the device body comes into contact with the tip of the outer cylindrical portion of the sealing member whose diameter has been expanded by the inclined surface, and then the annular reversing guide surface reverses the outer cylindrical portion of the sealing member. Bend the outer cylindrical part while guiding it.

In this way, the outer cylindrical portion of the sealing member is automatically inverted.

(Example) The present invention will be explained below based on the illustrated example.

FIG. 1 shows a device 1 for inverting the end of a sealing member according to an embodiment of the present invention.

The device 1 includes an outer cylindrical portion 103 of a seal member 100 such as a steering seal, which has an annular outer cylindrical portion 103 protruding from the seal member main body 102 in one axial direction at the outer diameter end of the seal member main body 102.
This is a device that reverses the

The device 1 includes a base 2 on which a sealing member 100 is placed, and a sealing member main body 102 provided on the base 2.
The seal member 100 has a protrusion 3 for positioning the outer diameter of the seal member 100, and a guide jig 4 for holding the seal member 100 with its outer cylindrical portion distal end 104 directed in a direction protruding from the base 2.

Note that the guide jig 4 is fixed in a positioned state in which the protruding portion 6a is fitted into the recess 2a of the base 2.

The device 1 also includes a device main body that is provided with a hollow guide chamber 10 that faces the base 2 and is movable in directions toward and away from the base 2 and that opens toward the base 2. 20 and the guide chamber 1 of the device main body 20
a center part 5 which is inserted into and out of the base 2 from the base 2 side, and a spring 11 which is provided in the guide chamber 10 and serves as a biasing means for biasing the center part 5 in a direction to protrude from the guide chamber 10. ,have.

One end of the spring 11 is attached to the inner surface of the plate portion 12. Further, the plate portion 12 is provided with a hand press portion 13, which is connected to a manual moving means (not shown).

On the outer periphery of the center part 5, there is a seal member 100 with a maximum diameter that gradually increases as the distance from the base 2 increases.
An inclined surface 7 having a larger diameter than the outer cylindrical portion tip 104 and a sliding surface 8 that slides on the device main body 20 are provided, and a convex portion 6 is provided at the center of the end surface of the center portion 5 on the base 2 side. The center of the convex portion 6 coincides with the center of the guide jig 4.

The inclined surface 7 preferably has a small diameter at the tip 1 of the outer cylinder part.
In order to minimize the frictional force caused by the tension force of 04, it is made of resin, more preferably annular Teflon.

A center portion 5 is provided at the open end portion 9 of the device main body 20.
A cutout surface 16 forming a gap between the sliding surface 8 and the sliding surface 8 of the
, an annular reversing guide surface 14 that comes into contact with the tip of the outer cylindrical portion 103 of the seal member whose diameter is expanded by the inclined surface 7, and an auxiliary guide surface 18 having a small curvature.

The device main body 20 is made of metal so that the sliding resistance between it and the sliding surface 8 made of resin is small.

According to the apparatus 1 for inverting the outer cylinder part 103 of the seal member 100 configured as described above, the guide jig is provided on the base 2 such that the tip of the outer cylinder part 103 of the seal member 100 is directed in the direction of protruding from the base 2. 4, and the outer cylinder part 1 of the held seal member 100
03, the device main body 20 is moved by applying pressure with the hand press section 13 toward the base 2 side.

Then, the center portion 5 inserted into the device main body 20 so as to be freely retractable is inserted into the outer cylinder portion 103 of the seal member main body 102.

At this time, the seal member 10
The outer cylindrical portion 103 of No. 0 is pushed outward in the radial direction.

Then, the seal member 10 has the convex portion 6 of the center portion 5 inserted into the inner periphery of the lip portion 101 of the seal member 100, and the center portion 5 is held by the guide jig 4.
After hitting the bottom of 0, the device main body 20 moves toward the outer cylindrical portion 103 of the sealing member 100 against the biasing force of the spring 11.

Then, the annular reversing guide surface 14 of the open end 9 of the device main body 20 comes into contact with the outer cylindrical portion 103 of the seal member 100 whose diameter has been expanded by the inclined surface 7, and then the annular reversing guide surface 14 contacts the seal member 100. 10
The outer cylinder part 103 of No. 0 is bent while being guided so as to be reversed.

In this way, the outer cylinder part 1 of the seal member 100
03 is automatically reversed (see Figure 6 A, B, and C).

Thereafter, the hand lever is moved in a direction away from the base 2, and after confirming that the device main body 20 is separated from the seal member, the seal member 100 is taken out.

In this way, since the outer cylinder portion 103 of the seal member 100 can be automatically reversed, costs can be significantly reduced.

(Effect of the invention) As explained above, according to the invention, the tip of the outer cylindrical part of the seal member is held in the direction of protruding from the base by the guide jig provided on the base, and Move the main body of the device toward the outer cylindrical portion of the seal member.

Then, the center portion inserted into the device main body so as to be freely retractable is inserted into the outer cylindrical portion of the seal member main body.

Then, the center portion inserted into the device main body so as to be freely retractable is inserted into the outer cylindrical portion of the seal member main body.

At this time, the outer cylinder part of the seal member is pushed outward in the radial direction by the inclined surface whose maximum diameter is larger than the tip of the outer cylinder part of the seal member and whose diameter gradually increases as it moves away from the base. go.

After the center portion hits the bottom of the sealing member held by the guide jig, the main body of the apparatus moves toward the outer cylinder portion of the sealing member against the urging force of the urging means.

Then, the annular reversing guide surface at the open end of the device body comes into contact with the outer cylindrical portion of the sealing member whose diameter has been expanded by the inclined surface, and then the annular reversing guide surface reverses the outer cylindrical portion of the sealing member. Bend the outer tube while guiding it as follows.

In this way, the outer cylindrical portion of the sealing member is automatically inverted.

[Brief explanation of the drawing]

Fig. 1 is a longitudinal cross-sectional view of a device for inverting the outer cylinder portion of a sealing member according to the present invention, Fig. 2 is an enlarged view of the main part of Fig. 1, and Fig. 3 is a view of the device with the sealing member attached. 4A, 4B, and 3C are longitudinal sectional views of the device, FIG. 5 is a vertical sectional view of the seal member to which the device is applied, after inversion, and FIG. 6 is the inversion of the same seal member. It is a front longitudinal cross-sectional view. Explanation of symbols, 100... Sealing member, 102...
... Seal member main body, 103 ... Outer cylinder part, 104 ...
... Tip of outer cylinder part, 2 ... Base, 4 ... Guide jig,
DESCRIPTION OF SYMBOLS 10... Guide chamber, 20... Device main body, 5... Center portion, 11... Spring (biasing means), 7... Inclined surface, 9... Open end, 14... Reversing guide surface.

Claims (1)

[Claims for Utility Model Registration] A device for inverting the outer cylindrical part of a sealing member, which has an annular outer cylindrical part protruding from the sealing member main body in one axial direction at the outer diameter end of the sealing member main body. a base on which the sealing member is placed; a guide jig provided on the base to hold the sealing member with the tip of its outer cylindrical portion protruding from the base; and the base. a device main body that is provided with a hollow guide chamber that opens toward the base side and is disposed so as to be movable in a direction toward and away from the base; a base in the guide chamber of the device main body; a center part that is inserted so as to be freely protrusive and retractable from the side; a biasing means that is provided in the guide chamber and biases the center part in a direction to protrude from the guide chamber; and a biasing means that is provided on the outer periphery of the center part and is inserted from the base an inclined surface whose maximum diameter is larger than the tip of the outer cylindrical portion of the sealing member, the diameter of which gradually increases as the distance increases; and a seal provided at the open end of the device main body and whose diameter is expanded by the inclined surface. A device for inverting the outer cylinder of a sealing member, comprising: an annular reversing guide surface that comes into contact with the tip of the outer cylinder of the member;