JP2000218564A - Disassembling method for insert parts and disassembling device for the insert parts - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make easy disassembling of insert parts by engaging an engaging member with the insert parts, heating and softening a plastic compact around the insert parts through the engaging member, and pulling out and separating the insert parts when the temperature of the compact reaches a specified temperature. SOLUTION: In separating a metal cap 32 insertionwise formed in a plastic- made toner container 30, at first the container 30 is fixed, then a lower end of a positioning member 10A is positioned to the cap 32. Thereafter, after a heating body 4 is heated through a current carried to a heater in the heating body 14, an engagement member 8 is lowered together with the heating body 14 by a hydraulic cylinder 12, then while an inner periphery of an engagement part 8c is pushed wide it is engaged with a screw part of the cap 32. A slide member 10 is made abut on the container 30, and under the condition, when the plastic portion of the vessel 30 is softened to have a specified temperature, the member 8 is moved upward by the energization force of spring members 4, 6 to thereby separate the cap 32 from the container 30.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for separating an insert part from a molded product obtained by insert-molding a screw, a screw, a mouthpiece, and the like when a molded body is molded from a molding material such as a plastic material.

[0002]

2. Description of the Related Art For electric appliances such as electric equipment and office equipment, molded articles made of many plastic materials are used for cover parts, interior parts, mounting parts and the like.

[0003] These plastic molded products include screws,
Screws, socket bases, receiving members and the like are insert-molded and integrally formed with the plastic molded product of the main body.

In an image forming apparatus such as a printer or a facsimile of office equipment, an outer cover is formed of a plastic material, and a stainless or brass insert part is integrally formed with the outer part.

[0005] On the other hand, due to the recent increase in resource conservation movements and environmental protection measures, there is a demand for recycling of plastic materials and recycling of insert parts.

[0006] A plastic molded article obtained by insert-molding the above-mentioned insert part must be decomposed for each material constituting the plastic molded article and separated and sorted to conform to a reuse form.

[0007] Insert-molded screws, bases and the like have different material types from plastic materials, so it is necessary to separate the insert part from the plastic molded body, but the conventional manual method is inefficient.

[0008] As a prior art of a tool for removing an insert part from a plastic molded body, Japanese Patent Application Laid-Open No. 6-17074 has been proposed.
No. 4 gazette.

[0009] The technique disclosed in this publication is based on a technique in which an outer cylindrical body having a lock fitting for locking the insert metal fitting from the inside is fitted to the outer cylindrical body so as to be slidable, and the locking is performed by a sliding operation. An object of the present invention is to provide a tool for taking out an insert fitting provided with a heating element for opening and closing the fitting.

[0010]

In the technique disclosed in Japanese Patent Application Laid-Open No. HEI 6-170744, the worker taking out the insert fitting melts the plastic at the joint and engages the resin part with the insert fitting. It is necessary to subjectively judge the loosened state, and it takes too much time, or the plastic material melts due to too much time to generate combustion gas, and also supplies the amount of heat required for melting The required time depends on the resin material, the contact area between the locking claw and the insert, and so on. But there was a bad point.

Further, the present invention provides a technique suitable for a material recycling cycle by separating materials of a plastic molded article formed by combining a different material with the above-mentioned plastic molded article, and in particular, a technique which can save labor. .

Further, the present invention provides a method and apparatus for separating metal parts of plastic molded articles such as home appliances, information / communication equipment, and office equipment, in which metal parts are insert-molded into plastic molded articles.

[0013]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to a method for separating an insert part which is insert-molded in a plastic molding, wherein an engaging member which engages with the insert part is provided. And the plastic molded body around the insert part is heated to a softened state through the engaging member, while applying a predetermined separating pressure to the engaging member, A method for separating an insert part, wherein the insert part is separated from the plastic molded body by the engagement member when the body reaches a predetermined temperature is proposed.

Further, the present invention relates to a method for separating an insert part insert-molded in a plastic molded body,
A heating element is housed in a cylindrical member provided with an engagement portion that engages with the inner periphery of the insert component, the engagement portion is inserted into the inner periphery of the insert component, and the heating member contacts the engagement portion. By causing the insert component to engage with the engagement portion, the heating operation of the plastic molded body around the insert component through the engagement portion and the application of a predetermined separation pressure to the cylindrical member, A method of separating an insert part is proposed, wherein the separating operation of the insert part is performed when the temperature of the plastic molded body reaches a predetermined temperature.

Further, as an embodiment of the above-mentioned separation method, there is a method for separating an insert part from the plastic molded body, wherein the separation pressure of the insert part uses a spring pressure.

Further, the present invention proposes an aspect of a method for separating an insert part, wherein the action of separating the insert part is determined by the relationship between the softening time of the plastic molded body by the heating element and the spring pressure.

According to the present invention, there is provided an apparatus for separating an insert part insert-molded into a molded body made of a molding material to solve the above-mentioned problems, comprising: means for heating and softening the molded body around the insert part; A device for separating an insert part, comprising means for separating the insert part from the molded body according to a softened state is proposed.

An aspect of the device for separating insert parts, wherein the separating means has a spring member utilizing spring pressure, is proposed.

An embodiment of an apparatus for separating insert parts, wherein the molding material of the molded body is a plastic material, is proposed.

Further, the present invention relates to an apparatus for separating an insert part insert-molded in a plastic molded body, comprising: an engagement member having an engagement portion for engaging with the insert part, the engagement member being capable of expanding and contracting. A means for heating a plastic molded body around the insert part; and a means for generating a force for separating the insert part from the engagement member. We solved the problem.

In the above-mentioned apparatus, there is an embodiment of an apparatus for separating insert parts, wherein the separating force generating means utilizes a spring force.

As one of the aspects of the separating device, there is proposed a separating device for an insert part, comprising means for determining the position of the engaging member.

Further, in the separating device, when the engaging portion of the engaging member engages with the insert part,
A separation device for an insert component, comprising a heat transfer member that performs a heat transfer operation by filling an engagement gap is proposed.

Further, the present invention provides an apparatus for separating an insert part insert-molded in a plastic molded body, comprising: an apparatus main body; A member, a member that expands the diameter of the engagement portion of the engagement member, a means (lock) that holds the diameter expansion member in a state where the engagement portion is engaged with the insert component, and the engagement. Means for transferring heat to the plastic molded body while the member is engaged with the insert part, and means for generating a separating force for separating the insert part from the plastic molded body. We propose a device for separating insert parts.

Further, in the separating device, the engaging member has a cylindrical shape with a shave at its tip, and the expanding member also serves as a heater member, and interlocks with the expanding operation by the heater member. An aspect of an apparatus for separating an insert part, wherein the plastic molded body is heated through the engagement part and the insert part is proposed.

The insert part further comprises means for releasing the connection of the insert part with the plastic molded body by softening the plastic molded body by heating and releasing the holding of the expanded member by the generation of the separating force. Is proposed. Further, the present invention proposes an insert part separating apparatus, characterized in that the separating apparatus includes means for detecting separation of the insert part from the plastic molded body.

[0027] The present invention proposes an aspect of the separating device for an insert part, characterized in that the separating device is provided with positioning means for determining a position at which the enlarged diameter member is inserted into the insert part.

[0028]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention, in order to solve the above-mentioned problems, relates to a method for separating an insert part which is insert-molded in a plastic molded body, wherein an engaging member which engages with the insert part is related to the insert part. In combination, the plastic molded body around the insert component is heated to a softened state through the engaging member, while a predetermined separating pressure is applied to the engaging member, and the plastic molded body is When the predetermined temperature is reached, the insert member is separated from the plastic molded body by the engagement member. The developed device configuration was developed.

The present invention will be described below with reference to the drawings.

(Explanation of Apparatus Configuration) FIG. 1 is a sectional view of a main part of the apparatus.

In FIG. 1, reference numeral 1 denotes a main body of the insert part separating apparatus, which has a hollow cylindrical shape, and has openings formed in upper and lower ceilings 1a and bottoms 1b, respectively.

Reference numeral 2 denotes an inner cylinder member which is fitted into the inner periphery of the main body 1 and is movable up and down on the inner periphery of the main body. The inner cylinder member 2 accommodates spring members 4 and 6 which will be described later. The spring members 4, 6 are compressed to generate a separation pressure for separating the insert part from the plastic molded body by the spring members.

The inner cylindrical member 2 is formed at its lower end with an abutting portion 2a which abuts against the inner surface of the bottom of the main body 1 and a contact portion 2b for lowering an engaging member 8 described later.

The engaging member 8 has a cylindrical shape, and its upper part 8
a is set to have a large inner diameter, the lower portion 8b is set to a small diameter, the lowermost end portion forms a slit 8c, and the tip portion 8d of the slit portion 8c corresponds to the shape of the engaging portion engaging with the insert part. It is formed in a shape.

The engaging member 8 is held in a fixed relationship with the main body such that the large diameter portion abuts the projection 1a on the bottom of the main body.

Reference numeral 10 denotes a slide member housed in the main body, and the slide member 10
Is connected to the piston 12a of the other cylinder.

Numeral 14 denotes a heating element attached to the slide member 10, which has a built-in heater inside a heat conductive member exterior member.

10A is a cylindrical positioning member fixed to the lower part of the slide member 10.

The outer diameter of the distal end portion 14a of the heating element 14 is set to be larger than the inner diameter of the constricted portion of the engaging portion 8c of the engaging member, and when the heating element distal end portion 14a passes through the engaging portion. The diameter of the engaging portion 8c is expanded.

That is, as shown in FIG. 1, the inner diameter of the engaging member 8d is reduced at normal temperature.

Reference numeral 16 denotes a slide rack formed on the outer peripheral surface of the upper portion of the slide member 10, and reference numeral 18 denotes the inner cylindrical member 2.
The racks 16 and 18 are provided with pinions 20 a and 20 a attached to the inner cylinder member 2.
b.

Reference numerals 22a and 22b denote the pinions 20a and 2b.
0b is formed on each of the flange portions,
a and 24b are D-cut surfaces configured to engage with each other.

Reference numerals 24a and 24b denote the slide member 1 respectively.
0 is attached.

(Lock Mechanism (FIG. 2)) FIG. 2 shows a slide lock mechanism of the slide member 10. As shown in FIG.

The lock mechanism operates to hold the slide member at the slide position.

In FIG. 2, reference numerals 10a and 10b denote protrusions formed on the outer peripheral surface of the slide member 10, the end surfaces of which are formed as engaging surfaces.

Reference numeral 26 denotes a lock claw, which is attached to the inner peripheral side of the outer cylinder member 1 and has a hook portion 26a whose leading end engages with the engaging surface of the projection, and a bent portion 26b
Is formed.

Reference numeral 26c denotes a fixed end portion to the outer cylindrical member 1 attached to the other end of the lock claw 26.

(Explanation of Molded Product with Insert Parts (FIG. 3)) FIG. 3 shows a plastic molded product with insert parts to which the present invention is applied. The molded article will be described as a toner container for storing toner of an image forming apparatus such as a copying machine, a laser beam printer, or the like.

The molded product is a toner container in which the main body 30 is molded of a plastic material, and has a configuration in which a metal cap 32 is insert-molded in a base portion of the container.

(Explanation of Control Device (FIG. 4)) FIG. 4 is a control block diagram of the present device.

Numeral 34 denotes a means for energizing the heater in the heating element 14, numeral 36 denotes a hydraulic pressure control means for the cylinder 12, and numeral 38 denotes an overall device control means.

Reference numeral 38A denotes an input means for switching a signal to the energizing means in accordance with the melting temperature of each plastic material.

(Description of Separation Method and Operation of Apparatus) Next, the operation will be described with reference to FIG.

FIG. 5 shows a state where the present apparatus is set on an insert molded product 30.

First, the insert molded product 30 is fixed to the fixing table 40.
Then, the lower end of the positioning member 10A is positioned so that the insert member 32 of the insert molded product 30 is located at the center position.

This alignment is performed by adjusting the tip 8 of the engaging member 8.
Positioning is performed so that d engages with the screw portion 32a of the insert member 32.

In this alignment, the position of the positioning member 10A is adjusted in accordance with the fixed position of the workpiece (plastic molded product 30) fixed to the fixed base 40. In the alignment state of the positioning member 10A, the slide member 10 is held at the raised initial position, the heating member 14 is also at the raised position, and the engaging portion 8d is not engaged with the screw portion 32a of the insert part 32. State.

In accordance with the positioning operation, the heating element 14 is heated to a predetermined temperature by energizing the heater in the heating element 14 by energizing the heating means.

An operation signal of the hydraulic cylinder 12 is output in accordance with the energization of the heating element 14, and the lowering of the piston 12a is started.

By the lowering operation of the heating member 14, the tip portion 14a of the heating member 14 pushes the inner peripheral portion of the engaging portion 8c to engage the engaging portion 8d with the threaded portion 32a of the insert part. Heat-resistant silicone rubber layer attached to slot 8c
A fills a gap between the engaging member 8 and the screw portion 32a.

The slide member 10 is lowered by the action of the cylinder to disengage the rotation stoppers 24a and 24b from the D-cut surfaces 22a and 22b of the flange portion of the pinion, and the slide rack 16 and the pinions 20a and 20b rotate. The moving force is transmitted to the urging rack 18 and the inner cylindrical member 2 moves in the direction of arrow A, whereby the urging springs 4 and 6 are compressed and the engaging member 8 is moved in the direction opposite to the direction of arrow A (insertion direction). (The direction in which the component 32 is taken out).

The lowering operation of the slide member 10 causes the hook portions 26a of the lock claws 26 to move as shown in FIG.
Engages with the protrusions 10a and 10b of the slide member 10, thereby restricting the return operation of the slide member 10 in the direction opposite to the arrow A direction.

From this state, as the heating operation on the heating element 14 proceeds, the heating element 14
c, the engaging portion 8c and the silicone rubber portion A transmit heat to the insert part 32, and further, the insert part 3
The second heat is transferred to the plastic around the part 32 to heat the plastic part 32B.

When the temperature of the plastic portion 32B is supplied with a sufficient amount of heat to melt the plastic material, the joining portion softens, and the fitting force connecting the insert component 32 is loosened.

When the fitting force between the insert part 32 and the surrounding plastic part is loosened, the compressive force of the spring members 4 and 6 exceeds the fitting force, whereby the engaging member 8 urged in the direction of arrow A becomes The spring member moves upward in the direction opposite to the arrow A while maintaining engagement with the insert part 32 by the urging force of the spring member. (See Fig. 7)

Thus, the insert part 32 is separated from the plastic part.

As shown in FIG. 8, when the engaging member 8 is lifted, the engaging member 8 moves until it comes into contact with the stopper member 42. During this movement, the engaging member 8 is bent by the bent portion 26b of the lock claw 26. , Thereby releasing the engagement between the hook portion and the slide member 10.

Further, when the lock of the lock claw is released, the abutting portion 8e (see FIG. 1) of the engaging member 8 abuts against the step portion 10c of the slide member 10 as the engaging member 8 is lifted, and is kept as it is. The slide member 10 is moved upward.

When the slide member 10 moves upward, the leading end 1 of the heating element is moved from the engaging portion 8d at the leading end of the engaging member.
4a comes out, and the insert part 32 is separated from the engagement part by the diameter of the slit part 8d being reduced. (FIG. 9)

The stopper 24a is locked to the D-cut surface 22a of the pinion by the rotation of the slide rack 16 and the pinions 20a and 20b by the upward movement of the engagement member 8 and the slide member 10, and the inner cylindrical member 2 is fixed at a predetermined position. You.
(Fig. 1)

(Description of Specific Embodiment) As a specific example of the present embodiment, the Vicat softening point of the resin material is 100 ° C. using ABS resin as the type of plastic in the plastic part of the molded article.

The material of the insert part is brass, and its thermal conductivity is 123 (W / mK).

The spring constant of the spring members 4 and 6 is 0.046k.
f / mm 2.

The load pressure of the cylinder 12 is 1.2 kgf.

The heating temperature of the heating body was set at 230 ° C.

The type of the silicone rubber A is RUN3 silicone (manufactured by Miwa Tec).

Hardness (JIS-A) 23 Tensile strength (kg / cm ² ) 74 Compression set 11 Heat resistance 300 ° C.

(Explanation of Another Embodiment) In the above embodiment, as shown in FIG. 1, a heating member 14 is attached to a lower portion of a sliding member 10 which slides inside an engaging member 8. However, a heating source that heats and melts the plastic member around the insert part 32 may be configured to be attached to the positioning member 10A.

[0080]

As described above, the present invention relates to a method for separating an insert part which is insert-molded in a plastic molded article, wherein an engaging member engaging the insert part is engaged with the insert part. The plastic molded body around the insert part is heated to a softened state through the engaging member, while a predetermined separating pressure is applied to the engaging member, and the plastic molded body reaches a predetermined temperature. When the insert member is separated from the plastic molded body by the engagement member, the insert member is separated by a method for separating the insert component, by reaching the melting temperature of the surrounding plastic molded product that fits the insert component. The insert parts could be automatically separated.

A method for separating an insert part insert-molded into a plastic molded body, wherein a heating element is housed in a cylindrical member provided with an engaging portion that engages with the inner periphery of the insert part, The engagement between the insert part and the engagement part is performed by inserting the engagement part into the inner periphery and the heating element is brought into contact with the engagement part, and plastic molding around the insert part via the engagement part is performed. Causing a heating action of the body and an action of applying a predetermined separation pressure to the cylindrical member,
When the temperature of the plastic molded body reaches a predetermined temperature, the operation of separating the insert part is performed by providing a method of separating the insert part, wherein the operation is performed without confirming the separation of the insert part. I was able to recommend. .

Further, according to the method of the present invention, the separation pressure of the insert part from the plastic molded body is determined by utilizing a spring pressure. Separation could be performed reliably.

The present invention also relates to an apparatus for separating an insert part which is insert-molded into a molded body made of a molding material, comprising: means for heating and softening the molded body around the insert part; Accordingly, productivity was improved by proposing a device for separating insert parts, characterized by comprising means for separating the insert part from the molded body.

Further, there is provided an apparatus for separating an insert part insert-molded in a plastic molded body, comprising: an engaging member having an engaging portion for engaging with the insert part, the expandable and contractible engaging member; To improve productivity by proposing a device for separating insert parts, comprising: means for heating the plastic molded body around the part; and means for generating a force for separating the insert part from the engagement member. Was completed.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view for explaining a main part of a device configuration of the present invention.

FIG. 2 is an explanatory view of a lock mechanism of a slide member.

FIG. 3 is an explanatory view of a molded article provided with an insert part to which the present invention is applied.

FIG. 4 is a control block diagram.

FIG. 5 is a diagram illustrating the operation of the apparatus of the present invention.

FIG. 6 is an explanatory view of a lock operation of a lock mechanism.

FIG. 7 is an explanatory view in which an insert part has been disengaged from a plastic member.

FIG. 8 is an explanatory diagram of unlocking.

FIG. 9 is an explanatory diagram of a return of an initial position of the slide member and the engagement member.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Outer cylinder member 2 Inner cylinder member 4, 6 Spring member 8 Engaging member 8c Split part at the tip of an engaging member 8d Engaging part of an engaging member 10 Slide member 12 Cylinder 14 Heating body 16 Slide rack 18 Energizing rack 20a , 20b Pinion 22 D-cut surface 24 Stopper 26 Lock claw

Claims (16)

[Claims] 1. A method of separating an insert part insert-molded in a plastic molded body, comprising: engaging an engaging member engaging with the insert part with the insert part; The plastic molded body around the part is heated to be in a softened state, while a predetermined separating pressure is applied to the engaging member, and when the plastic molded body reaches a predetermined temperature, the engaging member A method for separating an insert part, wherein the insert part is separated from a plastic molded body. 2. A method for separating an insert part which is insert-molded into a plastic molded body, wherein a heating element is housed in a cylindrical member having an engagement portion which engages with an inner periphery of the insert part, and The engagement between the insert part and the engagement part is performed by inserting the engagement part into the inner periphery and the heating element is brought into contact with the engagement part, and plastic molding around the insert part via the engagement part is performed. The heating action of the body and the action of applying a predetermined separating pressure to the cylindrical member are performed, and when the temperature of the plastic molded body reaches a predetermined temperature, the separating action of the insert part is performed. How to separate insert parts. 3. The method for separating an insert part according to claim 1, wherein the separation pressure of the insert part from the plastic molded body uses a spring pressure. 4. The method according to claim 1, wherein the separating action of the insert part is determined by a relationship between a softening time of the plastic molded body by the heating element and the spring pressure.
The method for separating an insert part according to the above. 5. An apparatus for separating an insert part which is insert-molded into a molded body made of a molding material, comprising: means for heating and softening the molded body around the insert part; An apparatus for separating insert parts, comprising: means for separating parts from the molded body. 6. An apparatus according to claim 5, wherein said separating means has a spring member utilizing a spring pressure. 7. An apparatus according to claim 5, wherein a molding material of said molded body is a plastic material. 8. An apparatus for separating an insert part insert-molded in a plastic molded body, comprising: an engagement member having an engagement portion engaged with the insert part and capable of expanding and contracting diameter; and the insert part. A means for heating a plastic molded body around the insert member, and means for generating a force for separating the insert component from the engagement member. 9. An apparatus according to claim 8, wherein said separating force generating means utilizes a spring force. 10. The separating apparatus according to claim 9, further comprising means for determining a position of the engaging member.
4. The separation device for insert parts according to claim 1. 11. The separation device according to claim 1, further comprising a heat transfer member that fills an engagement gap to perform a heat transfer operation when the engagement portion of the engagement member engages with the insert part. The apparatus for separating insert parts according to claim 8, wherein 12. An apparatus for separating an insert part insert-molded in a plastic molded body, comprising: an apparatus main body; and an engaging member having an engaging portion capable of expanding and contracting in diameter to engage with the insert part. A member for increasing the diameter of the engagement portion of the engagement member, a means for holding the diameter expansion member in a state where the engagement portion is engaged with the insert component, and a method for attaching the engagement member to the insert component. A means for transferring heat to the plastic molded body in the engaged state; and a means for generating a separating force for separating the insert part from the plastic molded body. Separation device. 13. The separating device, wherein the engaging member has a cylindrical shape with a shave at the tip, and the expanding member also serves as a heater member, and interlocks with the expanding operation by the heater member. 13. The apparatus for separating insert parts according to claim 12, wherein the plastic molded body is heated through the engagement part and the insert parts. 14. The apparatus according to claim 1, further comprising means for releasing the connection of the insert part with the plastic molded body by softening the plastic molded body by heating and releasing the holding of the diameter expanding member by the generation of the separating force. 14. An apparatus for separating insert parts according to claim 13. 15. The apparatus according to claim 14, further comprising means for detecting separation of the insert part from the plastic molded body. 16. The separation device according to claim 15, wherein the separation device includes a positioning unit that determines a position at which the enlarged diameter member is inserted into the insert component.