JPH06170744A - Take out tool for insert metal fitting - Google Patents

Abstract

PURPOSE:To provide a takeout tool for an insert metal fitting which easily separates the insert metal fitting from a plastic part into which the insert metal fitting is pressed. CONSTITUTION:A slidable heater member 32 is arranged to the inside of unfoldable lock claws 21. In a state that the lock claws 21 are folded, the lock claw 21 is inserted in an insert fitment on the inside of which a female screw is formed. When a heater member 32 is slid from this state to unfold the lock claws 21, a lock tooth 22 formed on the outer periphery of the lock claw is engaged with the female screw. The heater member 32 is electrically heated through a source cord 33, the insert metal fitting and the joining part of a sheathing member are fused through the lock claws 21 to loosen an engaged state. Thus, by lifting the lock claws 21 from the state, the insert metal fitting is easily pulled out from the sheath member and separated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is for removing insert metal fittings, such as female screws and nuts, which are inserted by press fitting or the like from the inside of an exterior member made of synthetic resin (hereinafter referred to as plastic) separately from the exterior member. The present invention relates to a tool for taking out an insert fitting used for.

[0002]

2. Description of the Related Art In recent years, insert metal fittings of this kind have been frequently used in various fields. This is because the insert metal fitting is convenient for joining the parts to each other and improving workability.

[0003]

By the way, recently,
Reusing plastic parts is being promoted from the viewpoint of resource saving and cost reduction, so-called recycling is being promoted. To that end, unnecessary plastic parts are crushed into pellets and then reused as molding materials. A process is needed.

However, it is difficult to crush the plastic parts having the insert fittings into pellets because the insert fittings are hard. For this reason, the plastic parts to which the insert fittings are attached cannot be effectively recycled.

On the other hand, in the disposal of such plastic parts, it is necessary to separate the insert fitting and the plastic and dispose of them in view of environmental problems.

Under these circumstances, there is an urgent demand for development of a tool for taking out an insert fitting that can remove the insert fitting from a plastic part and separate the two.

The present invention responds to such a demand, and the insert fitting can be easily taken out from the plastic part, and as a result, the plastic part can be recycled and used, and at the same time, it can contribute to the solution of environmental problems. An object is to provide a tool for taking out an insert fitting.

[0008]

A tool for taking out an insert fitting of the present invention is an insert fitting taking-out tool for taking out an insert fitting inserted in a synthetic resin exterior member from the exterior member. An outer cylinder body having a locking metal fitting for stopping is provided, and a heating body which is slidably fitted to the outer cylinder body and which opens and closes the locking metal fitting by a sliding operation.
The above object is achieved.

[0009]

[Function] The locking metal fitting in the closed state is inserted into the insert metal fitting, and the heating element is slid from this state to open the locking metal fitting. As a result, the locking fitting is locked to the insert fitting from the inside. Here, for example, a plug is connected to the heating body, and when the plug is inserted into an outlet, the heating body is heated.

Therefore, when the heating body is heated with the locking metal fitting locked to the insert metal fitting, heat is transferred to the joint portion between the insert metal fitting and the exterior member through the heating body and the locking metal fitting, so that the bonding portion is melted. can do.

When the insert fitting is pulled out from this state, it is separated from the exterior member and taken out while the insert fitting is locked to the locking fitting.

Subsequently, when the heating element is slid in the opposite direction to the above to close the locking metal fitting, the locking condition between the locking metal fitting and the insert metal fitting is released, and the insert metal fitting is disengaged from the locking metal fitting. . The insert fitting is removed from the exterior member by the above procedure.

[0013]

EXAMPLES Examples of the present invention will be described below.

FIG. 1A shows a tool for taking out the insert fitting of the present invention. This tool has a cylindrical handle 10 and a handle 10
A metal sleeve (20) fixed to the inner peripheral edge of the lower end of the through hole (11) and a slide member (30) slidable in the through hole (11). Further, a lever 31 that projects from the handle 10 and has a large upper end is connected to the upper end side of the slide member 30, and a columnar heater member 32 is connected to the lower end side. The heater member 32 includes a slide member 30 and a lever 31.
An electric cord 33 is connected through the inside of the heater, and when a plug 33a provided at the tip of the electric cord 33 is inserted into an outlet, the heater member 32 is heated.

Further, as shown in FIG. 1 (b), the sleeve
The lower end of 20 has a locking claw that is circumferentially divided into, for example, four parts.
21 ... is formed. Each locking claw 21 has an upper end continuous with the sleeve 20, an intermediate part having a small diameter, and a lower end bent so as to expand radially outward. Locking teeth 22 are formed on the outer peripheral surface of the lower end portion of each locking claw 21.
When the insert fitting is taken out, is locked to the tooth surface of the insert fitting. Due to such a structure, the locking claw 21 has elasticity and can be radially expanded and contracted in diameter with the upper end portion as a fulcrum. Hereinafter, the diameter expansion operation of the locking claw 21 will be referred to as an opening operation, and the diameter reduction operation will be referred to as a closing operation.

The opening operation of the locking claw 21 is performed by sliding the slide member 30 downward. That is, the diameter of the heater member 32 connected to the lower end of the slide member 30 has
It is larger than the middle small diameter part of 21, and the heater member 32
When the lower end portion of the slide member is slid to this position, the heater member 32 pushes the locking claw 21 and spreads it, whereby the opening operation is performed. Conversely, when the slide member 30 and the heater member 32 are slid upward from this state, the locking claw 21 is closed.

Next, the operation of taking out the insert fitting 42 from the plastic part 41 into which the insert fitting 42 is press-fitted using such a tool will be described with reference to FIGS. 2 and 3.

First, as shown in FIG. 2 (a), a plastic part 40 targeted by the present invention comprises a plastic outer casing member 41 having a bottomed cylindrical shape and an insert metal fitting 42 press-fitted inside thereof. It is configured. The insert metal fitting 42 also has a tubular shape, and a female screw 43 is formed on the inner surface thereof.

When separating the insert fitting 42 from the plastic part 40, the heater member 32 is heated by inserting the plug 33a into an outlet in advance, as shown in FIG.
As shown in (a), the locking claw 21 of the sleeve 20 is inserted into the female screw 43 of the insert fitting 42. At this time, the locking claw 21
Is in a closed state.

Subsequently, as shown in FIG. 2 (b), the slide member 30 and the heater member 32 are lowered to cause each locking claw 21 to open. As a result, the locking teeth of each locking claw 21
22 meshes with (locks) the female screw 43 of the insert fitting 42. At this time, since the heater member 32 is sufficiently heated, the insert fitting 42 and the exterior member 41 are inserted through the heater member 32, the sleeve 20, each locking claw 21, and the insert fitting 42.
A sufficient amount of heat to melt the plastic of this portion is transmitted to the joint portion of.

Therefore, it is preferable that the sleeve 20 and the locking claw 21 are made of a metal material having a large thermal conductivity. When the joint portion is melted, the fitting between the exterior member 41 and the insert fitting 42 becomes loose.

In this state, as shown in FIG. 3A, when the handle 10 is gripped and the sleeve 20 and the locking claw 21 are pulled up, the insert fitting 42 is pulled out from the exterior member 41 and the insert fitting 42 is made of plastic. Separated from component 40.

Thereafter, as shown in FIG. 3 (b), when the slide member 30 and the heater member 32 are slid upward with respect to the sleeve 20, the locking claws 21 are closed, and the separated insert fittings 42 are inserted. Is released from each locking claw 21.

Therefore, since the exterior member 41 (= plastic part 40) from which the insert fitting 42 is separated is made of only a plastic material, it can be crushed into pellets and recycled. Also, insert metal fittings 42
Can be pressed into a new plastic part 40 again, or can be recycled as discarded metal.

In the above embodiment, as the heating mechanism,
Although the heater member 32 composed of an electric heater is used, a heater member utilizing another heating principle such as electromagnetic heating may be used.

[0026]

As described above, the tool for taking out insert metal fittings of the present invention is provided with the metal fittings made of metal integrated with the exterior member made of synthetic resin, and the metal fittings for engaging from the inside. The joint part between the insert fitting and the exterior member is melted by the heat conducted from the heating element that heats the insert, and the insert fitting is pulled out from the exterior member while the fitting force between the two is weakened. The insert fitting integrated with this can be taken out and separated from the manufactured exterior member.

Therefore, by using the tool for taking out the insert fitting of the present invention, it becomes possible to recycle the synthetic resin parts to which the insert fitting is attached, which has been difficult in the past, and it is possible to greatly contribute to resource saving and cost reduction. It can also contribute greatly to solving environmental problems.

[Brief description of drawings]

FIG. 1A is a vertical cross-sectional view showing the entire structure of a tool for taking out an insert fitting of the present invention, and FIG. 1B is a partially enlarged front view of a locking claw.

FIG. 2A is a vertical cross-sectional view showing a state in which a locking claw is inserted into an insert metal fitting, and FIG. 2B is a vertical cross-sectional view showing a state in which the locking claw is opened and locked to a female screw of the insert metal fitting. Fig.

FIG. 3 (a) is a longitudinal sectional view showing a state in which an insert fitting is pulled out from a plastic part by a locking claw, (b).
FIG. 6 is a vertical cross-sectional view showing a state in which the insert fitting is removed from the locking claw after separation.

[Explanation of symbols]

 10 Handle 20 Sleeve 21 Locking claw 22 Locking tooth 30 Slide member 31 Lever 32 Heater member 33 Power cord

Claims (1)

[Claims] 1. An insert metal fitting removing tool for taking out an insert metal fitting inserted in a synthetic resin outer material from the outer material, and an outer cylindrical body having a locking metal fitting for locking the insert metal fitting from the inside, A tool for taking out an insert fitting, which is slidably fitted to the outer tubular body and has a heating body that opens and closes the locking fitting by a sliding operation.