JPS5932532Y2 - Elastic tube fitting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an elastic tube fitting device for expanding and fitting an end of an elastic tube into a cylindrical portion of a component.

When fitting the end of an elastic tube into a cylindrical part, the inner diameter of the elastic tube is smaller than the outer diameter of the cylindrical part to ensure a tight fit, or when an engaging part such as an engaging flange or an engaging groove is provided. It is necessary to widen the end of the elastic tube to increase the inner diameter before fitting it.

Conventionally, in such cases, the ends of the elastic tube were manually widened to fit the elastic tube, or a widening tool was inserted into the inside of the elastic tube to widen the tube, but this was inefficient.

The present invention has been developed by focusing on the above-mentioned conventional problems, and aims to provide an efficient and automated elastic tube fitting device. an elastic tube fitting device that widens and fits an end of an elastic tube into a section, the widening mechanism that widens the end of the elastic tube;
and a feeding mechanism that positions the component and inserts the cylindrical part inside the end of the elastic tube. A first stroke that faces the center, has a hook claw that can be engaged with the inner side of the end of the elastic tube, and widens to a width that can be inserted into the cylindrical part of the end part of the elastic tube; The hooking claw is driven to widen in two stages of the second stroke in which it comes off from the end of the elastic tube, and widening members are radially arranged and held movably in the direction of the center of the action space. The mechanism is an elastic tube fitting device characterized in that a holding part that holds the component is supported so as to position and insert the component into an insertion position at an end of the elastic tube from the axial direction of the elastic tube. Exists.

The present invention will be described below based on embodiments shown in the drawings.

As shown in FIG. 1, an engaging groove A is formed inside the lower end of the elastic tube A.
1 is formed, and the annular flange-shaped cylindrical portion B1 of the component B is fitted into this engagement groove A1.

A board 11vC widening mechanism 2 is provided on the upper part of the base 1.

A vertically cylindrical working space 21 is formed passing through the center of the width expanding mechanism 2 and the substrate 11 .

Three widening members 3, 3, . . . are arranged radially with their tips facing the center of the working space 21.

The number of expansion members 3 may be greater, and at least two are required.

The widening member 3 has a hook 31 formed at its tip that projects upward and can be held inside the lower end of the elastic tube A.
Between the upper holding plate 41 and the lower holding plate 42 &? : Holding grooves 44 formed radially in a disk 43 that is movably held
It is held so that it can move forward and backward in the direction of the center of the working space 21, and the upper and lower rear portions (ra-ra 32, 32, . . . ) are pivotally connected.

The rollers 32, 32, . . . are engaged with guide elongated holes 45, 45, .

One side of the disc-shaped upper holding plate 41 and lower holding plate 42 is cut out in the tangential direction to form an opening 46, from which a part of the circular groove 43 protrudes, and the outer Rvc tooth 5 near the protruding portion
1 is provided.

A rack 53 is engaged with the teeth 51 and is driven by a driving sill 52 fixed to the base IIL.

A rack 53 (D tip 54 tlc) and a receiving portion 56 of the piston rond end of the auxiliary sill 55 are provided to face each other.

From the state shown in FIG. 1, the rack 53 is driven forward by the driving sill 52 until the tip 54 abuts the receiving part 56, when the cylindrical part B1 of the component B is inserted into the lower end of the elastic tube A. The first stroke is to widen the width with the widening member 3 to the maximum possible width, and then the receiving part 56 of the auxiliary sill 55 moves back, the rack 53 moves further, and the width is expanded until the receiving part 56 completely retreats. The hooking claw 31 of the width member makes a second stroke in which it comes off from the lower end of the elastic tube A, and here the hooking claw 31 widens beyond the maximum outer diameter of the elastic tube A.

The supply mechanism 6 is provided below the width expanding mechanism 2, and has a base 61 fixed to a support 13 fixed to the support legs 12vC of the base 1, and a guide bar 63 that slides through sleeves 62 and 62. .63 supports a holding part 64 that holds part B, and the holding part 64 is provided with a part positioning piece 65 fixed therein and an escape hole 66 for the protruding part of part B. The tip of the piston rondro 8 of the supply drive sill 6T fixed to the base 61 is connected, and the elastic tube A is attached to the width expanding mechanism 2 from below in the axial direction.
When the piston rod 8 of the supply drive sill 61 is fully protruded, it is supported so that the component can be positioned and inserted into the insertion position at the end of the elastic tube A.

In order to operate the elastic tube fitting device, first, FIG. 1 shows a state in which the elastic tube A and the component B are inserted, and the holding part 64 is lowered and the component B is placed over the component positioning piece 65. The position is fixed.

The width expanding member 3 is in the most advanced position, the roller 32 is located at the inner end of the elongated hole 45, the hook 31 is inside the inner diameter of the elastic cylinder A, and the lower end of the elastic cylinder A is not expanded. Even nails 3
1.31... external fitting device is installed.

Next, the drive sill 51 is actuated, and a little later the supply drive sill 61 is actuated, resulting in the state shown in FIG. 2.

That is, when the drive cylinder 51 is operated, the rack 5
3 moves forward and rotates the disk 43.

When the tip 54 of the rack 53 comes into contact with the receiving portion 56 of the auxiliary cylinder 55, the driving force of the auxiliary cylinder 55 is set to be larger than the driving force of the driving cylinder 52 and stops there.

The operation so far is the first stroke, and when the disk 43 rotates, the roller 32 of the widening member 3 is guided by the elongated hole 45 and moves outward, so the widening member 3 retreats and the hooking claw 31 continues to hook the lower end of the elastic tube A, this lower end widens to a size into which the cylindrical portion B1 of the component B can be inserted.

Therefore, when the supply drive ring 61 is operated, the component B held by the holding portion 64 is inserted into the lower end of the elastic tube A from the lower axial direction, and is stopped at a predetermined position.

Next, when the fluid pressure in the auxiliary cylinder 55 is removed, the rack 53 can move forward, and while rotating the disc 43, it moves forward until the receiving portion 56 of the auxiliary cylinder 55 is completely retracted, resulting in the state shown in FIG. 3.

This is the second stroke.

That is, the width expanding member 3 is further retreated from this point and the hooking claw 3
1 also tries to retreat while hooking the lower end of the elastic member A, but since this lower end is fully extended, the hooking claw 31v
C becomes unable to follow and comes off.

By giving an appropriate angle to the inside of the hook 31, it can be removed without tearing off the lower end.

Therefore, the lower end of the elastic tube A returns to its original shape due to elasticity, and the engagement groove A1 of the elastic tube A is fitted into the cylindrical portion B1 of the component B.

In this embodiment, the hooking pawl 31 widens outward by the maximum outer diameter of the elastic tube A, so when the supply drive/ring 61 is operated in the direction of lowering the part B, the elastic tube A 31..., passes through the working space 21, descends while being fitted with the part B, and after the holding part 64 returns to the state shown in FIG. 1, the fitted elastic tube A and the part Can you take out B?

Next, after returning the driving cylinder 52 and the auxiliary cylinder 55, the elastic tube A and the part B are inserted, and the state shown in FIG. 1 is obtained.

It should be noted that other means may be used to drive the widening member 3 forward and backward; for example, a fluid cylinder or a solenoid that operates in two stages may be directly connected to the widening member 3.

According to the elastic tube fitting device according to the present invention, the operation of widening the end of the elastic tube and inserting and fitting the cylindrical part of the component can be automatically and smoothly performed. The assembly work is automated extremely efficiently, reducing work costs and improving productivity.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, Fig. 1 shows the elastic tube and parts in a centered state, Fig. 1 is a longitudinal sectional view of the atX fitting device, Fig. 1 is a plan view of the main part, Fig. 2 similarly shows the first stroke end state, and FIG. 3 similarly shows the second stroke end state. A... Elastic tube, B... Parts, 2... Width expansion mechanism, 2
DESCRIPTION OF SYMBOLS 1... Working space, 3... Width expansion member, 31... Hook claw, 6... Supply mechanism, 64... Holding part.

Claims (1)

[Scope of utility model registration request] An elastic tube fitting device that widens and fits an end of an elastic tube into a cylindrical portion of a component, the device comprising: a widening mechanism that widens the end of the elastic tube; and a widening mechanism that widens the end of the elastic tube; and a supply mechanism inserted into the end of the elastic tube, and the width expanding mechanism has a working space formed in the center, a tip facing the center of the working space, and a feeding mechanism inserted into the end of the elastic tube. A retainable hook is formed inside the end of the elastic tube, and the first stroke widens the end of the elastic tube to a width that allows insertion of the cylindrical part of the component, and the hook is attached to the end of the elastic tube. The supply mechanism includes widening members that are driven to widen in two stages of the second stroke and are held movable in the direction of the center of the working space and are arranged radially. 1. An elastic tube fitting device, characterized in that a holding portion is supported so as to position and insert a component into an insertion position of an end of the elastic tube from the axial direction of the elastic tube.