JP4729450B2 - How to remove the base of the waste fluorescent lamp - Google Patents

Description

  The present invention relates to a cap removal method for removing caps attached to both ends of a used fluorescent lamp from a bulb.

As shown in FIG. 7, the fluorescent lamp has a base 2 with pins 2 a and 2 a attached to both ends of a glass straight tube bulb 1, a phosphor 3 is applied to the inner surface of the bulb 1, and mercury is contained in the bulb 1. Gas containing steam is enclosed.
The filaments 4 are provided at both ends of the bulb 1, and the lead wires 5 extending from the filaments 4 are fixed to the pins 2 a and 2 a of the base 2.
The valve 1 and the base 2 are bonded with an adhesive 6 made of phenol resin cement or the like.

When processing used fluorescent lamps such as used ones, it is desired to increase the recovery rate in order to recover and reuse metal parts and glass materials for the purpose of saving resources.
Conventionally, when disposing of used fluorescent lamps as industrial waste, in general, crush them together without removing the base, or leave both ends of the bulb adjacent to the base. A method of cutting both ends of the valve with the base attached is employed.

  However, in the method of crushing together with the base attached, it is necessary to separate metal, plastic, etc. Also, in the method of cutting both ends of the valve with the base attached, both ends are crushed together. Therefore, the attached base is also contaminated with mercury, and after removing mercury by heating, acid washing, etc., it is necessary to separate metals, plastics, etc., and a complicated process is required.

  Therefore, by crushing the entire bulb from which the cap has been removed, it is possible to safely recover almost all of the bulb glass, and a fluorescent lamp bulb glass recovery processing method, and the fluorescent lamp cap used therefor. The present applicant has proposed a removal apparatus as Japanese Patent Application Laid-Open No. 2004-111325.

The base removing device of this application includes a clamp that grips the outer periphery of the base of the fluorescent lamp in a radial direction and a drive source that drives the clamp to open and close, and the clamp holds the base via a cushioning material. The gist.
When removing, the base is held by a clamp, and the valve is rotated around the axis to separate the base from the valve.
JP2004-111325A

  The above-mentioned technology has a problem that a strong force is required for the work of peeling off the adhesive that has bonded the base and the valve, and the valve diameter is reduced because the valve is twisted around the axis. Depending on the difference in the pressure, the adhesive strength between the bulb and the base, and the strength of the bulb glass, depending on the manufacturer, the bulb may break when fixed or rotated, so the types that can be adapted were limited.

  In addition, since the base removal is performed by gripping each valve and adding a twist, the mechanical configuration becomes complicated, and a method of removing the base without stopping feeding by continuously supplying the pipe. It was a problem in terms of efficiency.

  Therefore, the present invention can easily remove the adhesion between the valve and the base with a small force and perform the separation work, and can remove the base without stopping feeding even if the pipe is continuously supplied. The present invention is intended to provide a method for removing a base of a waste fluorescent lamp that simplifies the processing steps such as the mercury removal step of the base and enables the metal part to be recycled.

Cap removal method of waste fluorescent lamp of the present invention described in claim 1 for solving the above problems is a method for removing a die from the valve of the waste fluorescent lamp, and holding down the valve is not jumping, base part of the Is struck from above with a striking piece, and the adhesion between the valve and the base is scraped off and separated from the valve by the impact of only the tapping .

  By striking the base part, the impact of scratching is directly applied to the bonded part of the valve and the base, there is no loss of force, the adhesive layer is destroyed and the adhesion is peeled off, and the impact is caused by the impact between the pin and the filament. The inner lead line is cut, and the valve and the base are separated.

By pressing and fixing the valve, the impact of the tapping is concentrated on the base part, so that the base can be separated with a small force, and efficient removal work is possible.

Next, a method for removing the cap of the waste fluorescent lamp of the present invention according to claim 2 is characterized in that the cap portions on both sides of the bulb are beaten simultaneously.
The caps on both sides of the valve can be separated at the same time, enabling efficient removal work.

Next, according to a third aspect of the present invention, there is provided a method for removing a base of a waste fluorescent lamp according to the present invention, in which a bonding portion between a bulb and a base is heated in advance before tapping.
If the adhesive layer is softened by heating in advance and the adhesive layer is made brittle and then struck, the adhesive layer is almost destroyed, so the base can be easily separated from the valve with a small force. .

Next, according to a fourth aspect of the present invention, there is provided a method for removing a base of a waste fluorescent lamp of the present invention, wherein the pin is removed from the base in advance or the pin is cut in the vicinity of the base before tapping.
Since the lead wire to the pin connected to the filament is cut in advance, the base can be easily separated from the bulb with a small force by tapping.

Next, a method for removing a base of a waste fluorescent lamp of the present invention according to claim 5 is characterized in that a portion of the base is hit with a hitting piece protruding from a rotating body, and the adhesion between the bulb and the base is peeled off and separated. Is.
By using the rotational force for tapping, it is possible to easily adjust tapping timing and impact force.

Next, according to a sixth aspect of the present invention, there is provided a method for removing a base of a waste fluorescent lamp according to the present invention, wherein the base portions of the waste fluorescent lamps arranged side by side are continuously conveyed in front of a rotating body.
Since the removal from the tube is achieved only by striking the base part, the work can be carried out by continuously transporting the base parts of the waste fluorescent lamps arranged side by side.

Next, according to a seventh aspect of the present invention, there is provided a method of removing a base of a waste fluorescent lamp according to the present invention. It is characterized by being provided.
Timing adjustment is facilitated because it is sufficient that any of the tapping pieces projecting radially from the rotating body be struck by the cap portion to be conveyed.

Next, in the method for removing a base of a waste fluorescent lamp of the present invention according to claim 8 , the rotating body is provided over a plurality of base portions that are continuous in the transport movement line, and at the interval corresponding to each base portion, the rotating surface is provided. The hitting piece is provided so as to protrude.
More reliable removal can be expected because the base portion obtains a tapping opportunity with a plurality of tapping pieces while being transported in front of the rotating body.

Next, according to a ninth aspect of the present invention, there is provided a method for removing a base of a waste fluorescent lamp according to the present invention, wherein the hitting pieces corresponding to the respective base portions are projected at different angles on the rotation surface.
More reliable removal can be expected in order to obtain more tapping opportunities with the plurality of tapping pieces while the cap portion is transported in front of the rotating body.

  According to the cap removal method of the waste fluorescent lamp of the present invention as set forth in claim 1, in order to separate the bulb and the cap by tapping, the conventional bulb is rotated around the axis and twisted to separate the cap from the bulb. Compared to the case, the impact is easily transmitted directly to the bonded portion, there is no loss of force, a large breaking force can be obtained with a small force, and the operation is easy and the workability is good.

Further, since only the base is separated and the end portion of the valve is not cut, it is not necessary to remove mercury, and it is possible to simplify the subsequent work process and facilitate the recycling of the metal part.
Furthermore, since the bulb is not twisted as in the prior art, there is no need to distinguish between the difference in adhesive strength between the bulb and the base, the strength of the bulb glass, and the difference in tube diameter.

Further, by pressing and fixing the valve, the impact of tapping is concentrated on the base part, so that the base can be separated with a small force, and an efficient removal operation can be obtained.

Next, according to the method for removing the cap of the waste fluorescent lamp of the present invention described in claim 2, since the caps on both sides of the bulb can be separated at the same time, the workability is improved.

Next, according to the method for removing the base of the waste fluorescent lamp of the present invention described in claim 3 , since the adhesive at the adhesive portion between the bulb and the base is softened by heating and the adhesive layer is made brittle in advance, After separating the base, it has the effect of facilitating the work of removing the adhesive adhering to the valve side and the base side.

Next, according to the cap removal method of the waste fluorescent lamp of the present invention described in claim 4, since the lead-in wire is cut in advance, the cap can be reliably separated from the bulb by tapping.

Next, according to the method for removing the base of the waste fluorescent lamp of the present invention described in claim 5, by using the rotational force for tapping, the effect of easily adjusting the timing and impact force of tapping is exhibited. It is.

Next, according to the method for removing the base of the waste fluorescent lamp of the present invention described in claim 6 , since the removal from the tube is achieved only by striking the base, the base portions of the waste fluorescent lamps arranged side by side are continuously provided. Thus, the work can be carried and transported, so that the work efficiency is improved.

Next, according to the method for removing the base of the waste fluorescent lamp of the present invention described in claim 7 , it is sufficient that the base part to be transported is hit by any one of the hitting pieces protruding radially from the rotating shaft. As a result, adjustment of the timing of the conveyance speed and the rotation speed is facilitated, and the conveyance speed is also increased.

Next, according to the method for removing the base of the waste fluorescent lamp of the present invention as set forth in claim 8 , more reliable removal is achieved because the base portion obtains a hitting opportunity with a plurality of hitting pieces while the base is being transported in front of the rotating body. The effect which can be obtained is exhibited.

Next, according to the method for removing a base of a waste fluorescent lamp of the present invention as set forth in claim 9 , since the base part obtains more tapping opportunities with a plurality of tapping pieces while being transported in front of the rotating body, it is more reliable. Can be expected to have a good removal effect.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
Throughout the drawings, the same reference numerals indicate the same or corresponding parts.
The method for removing the cap of the waste fluorescent lamp of the present invention is to separate the cap 2 from the bulb 1 of the waste fluorescent lamp and remove it.
The waste fluorescent lamp includes not only a used fluorescent lamp but also a defective fluorescent lamp generated during the manufacturing process.

  The method of the present invention is to tap the cap 2 of the bulb 1 to peel off the adhesion between the bulb 1 and the cap 2 and separate the bulb 1 and the cap 2. FIG. 1 shows one of the cap removal methods of the waste fluorescent lamp of the present invention. It is process drawing which shows embodiment.

The valve 1 is placed on the work table 7, the end of the valve 1 including the base 2 protrudes laterally from the work table 7, and the tapping member 8 is disposed on the upper portion of the base 2.
The tapping member 8 is composed of a rotating shaft 9 and a tapping piece 10 protruding from the rotating shaft 9, and the tapping piece 10 strikes the base 2 by the rotation of the rotating shaft 9 to give an impact, and the adhesive layer is destroyed and bonded. Is peeled off, and the lead wire in the bulb 1 is cut in the middle of the pin and filament due to impact, and the bulb 1 and the base 2 are separated.

The core of the rotary shaft 9 is preferably positioned above the upper surfaces of the valve 1 and the base 2, and the striking piece 10 is adjusted in length so that it strikes and strikes only the base 2.
Therefore, the impact of the hitting on the base 2 by the hitting piece 10 has the effect of scratching and peeling off from the upper part to the lower outer side at the same time. The impact is easily transmitted directly to the bonded portion, and there is no loss of force. Thus, a large destructive force can be obtained and the valve 1 and the base 2 can be separated.

Although only one side is shown in FIG. 1, the same tapping member 8 may be arranged on the other side and tapped synchronously, and the holding member 11 (FIG. 2) prevents the valve 1 from jumping due to impact. May be installed (or installed so as to be movable up and down) if necessary.
Further, the hitting piece 10 of the hitting member 8 may be a hitting rod that reciprocates linearly from the upper part of the base 2 to the lower outer side, and may be operated using, for example, a cylinder or a cam mechanism.

  FIG. 3 shows another embodiment, in which a plurality of hitting pieces 10 are provided on the rotating shaft 9 of the hitting member 8 so as to project radially from the rotating shaft 9, while the valve 1 is placed on the transport line. The mechanism is such that the valve 1 is continuously transported and moved on the front surface of the tapping member 8 by the chain drive 13 mounted side by side and provided with the carrier 12.

  Since a plurality of striking pieces 10A, 10B,... Project radially from the rotating shaft 9, the timing of the conveying speed of the valve 1 that passes continuously and the rotational speed (striking impact) of the striking piece 10 are adjusted. It is also possible to set a plurality of hitting opportunities on the base 2.

  FIG. 4 shows another embodiment, and tapping pieces 10, 10,... Corresponding to a plurality of valves 1, 1,. Is a mechanism in which a plurality of hitting pieces 10A, 10B,... Are radially arranged on the rotation surface corresponding to each valve 1.

  In this way, the continuously transported valves 1, 1,... Have multiple occasions of being struck by the struck pieces 10, 10,. It is possible to obtain an opportunity to strike 10A, 10B,..., And even when the base 2 is not separated by a single impact, it is easy to reliably perform separation by giving a plurality of impacts.

  Furthermore, if the angle disposed radially is changed between the rotation surfaces corresponding to the respective valves 1, the probability of adjusting the timing for hitting the base 1 itself is unnecessary, It will be able to be struck.

Next, FIG. 5 is a diagram in which the bonded portion between the bulb 1 and the base 2 of the waste fluorescent lamp is heated in advance prior to tapping.
For example, it can be heated by a heater 15 such as a gas burner or an electric heater, or heated by a hot air such as a hot air generator comprising an electric heater and a fan.
As a result, the bonded portion where the valve 1 and the base 2 are bonded is heated, the adhesive 6 softens and the adhesive layer becomes brittle. From this state, the base 2 can be easily separated from the valve 1 by the base removal method. Become.

In FIG. 6, the pin 2a is pulled out from the base 2 of the waste fluorescent lamp in advance, or is cut near the base of the pin, and the connection between the pin and the lead-in wire is cut off.
Before hitting, pin 2a is pinched with a tool 16 such as pliers or pliers, and it is pulled out by applying force up and down, left and right (in the direction of the arrow in FIG. 6), or the pin is cut near the base of the cap with a rotary cutter, air nipper, etc. Easy to remove.
As a result, the lead-in wire 5 is cut, and then the base 2 is easily separated from the valve 1 by the base removal method.

  Although the method of the present invention has been described based on the embodiments, the present invention is not limited to the above-described embodiments, and various modifications and improvements can be made without departing from the spirit of the present invention.

It is a front view which shows the process example of this invention method. It is a front view of one process example of the method of the present invention. It is a front view which shows the other process example of this invention method. It is a top view of another example of 1 process of the present invention method. It is principal part sectional drawing which shows the heating method of the adhesion part of a waste fluorescent lamp and a nozzle | cap | die. It is principal part sectional drawing which shows the removal method of the pin of a nozzle | cap | die from a waste fluorescent lamp. It is a fragmentary sectional view of a fluorescent lamp.

1 Valve 2 Cap 2a Pin 8 Tapping member 9 Rotating shaft 10, 10A, 10B Tapping piece 11 Pressing member 15 Heater 16 Tool

Claims (9)

This is a method of removing the base from the bulb of the waste fluorescent lamp , holding the bulb so that it does not jump , hitting the part of the base from above with a striking piece, and scratching and peeling off the adhesion between the bulb and the base only by the impact A method of removing a base of a waste fluorescent lamp, characterized by separating from a bulb .   2. The method of removing a cap of a waste fluorescent lamp according to claim 1, wherein the cap portions on both sides of the bulb are hit simultaneously. The method of removing a base of a waste fluorescent lamp according to claim 1 or 2, wherein an adhesive portion of the bulb and the base is heated in advance before the tap. The method of removing a base of a waste fluorescent lamp according to any one of claims 1 to 3 , wherein the pin is removed from the base in advance or the pin is cut in the vicinity of the root of the base before hitting. The method of removing a cap of a waste fluorescent lamp according to any one of claims 1 to 4 , wherein the cap portion is hit with a hitting piece protruding from the rotating body. 6. The method of removing a base of a waste fluorescent lamp according to claim 5, wherein the base of the waste fluorescent lamp arranged side by side is continuously conveyed in front of the rotating body. 7. The waste fluorescent lamp according to claim 6 , wherein a plurality of striking pieces project radially from the rotating body on the rotating surface of the rotating body at the same position with respect to the transfer movement line of the base portion. Method of removing the base. Provided with a rotary body over a plurality of the base portions continuous conveyance transfer line, at intervals corresponding to the respective base part, claim 7, wherein the tapping piece rotating surface, characterized in that the is provided with projecting To remove the base of the waste fluorescent lamp. 9. The method for removing a base of a waste fluorescent lamp according to claim 8 , wherein the hitting pieces corresponding to the respective base portions are projected at different angles on the rotation surface.

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