JPH0618694B2 - Capping separation method and apparatus for cap - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention separates a cap consisting of a metal capsiel and a synthetic resin packing attached to the capsip into a capshel and a packing. Method and device.

[Conventional technology]

In general, a container containing soft drinks or the like is provided with a cap at its mouth so that the container is hermetically sealed. FIG. 7 is a diagram showing an example of the conventional cap. In FIG. 7, reference numeral 50 is a cap,
The cap 50 is composed of a cap shell 51 formed of a metal such as aluminum which is easily processed, and a packing 54 attached to the cap shell 51 for the purpose of improving airtightness and formed of a synthetic resin such as vinyl chloride. ing. The cap 51 includes a cylindrical side wall portion 52 in which irregularities corresponding to the threads of the container mouth are formed,
It is configured by a disc-shaped top plate portion 53 that closes the upper end of the side wall portion 52. A packing 54 is attached to the inside of the top plate portion 53 of the cap 51.

By the way, generally, caps, which are metal parts, of caps that have been used are separated from the caps and recovered and reused for the purpose of reusing resources. Conventionally, in order to separate and recover the capsiels from the used caps, put the caps in an incinerator, burn the incinerator to incinerate the packing made of synthetic resin, and then remove the capsiels from the unburned residue. The method of collection is adopted.

[Problems to be solved by the invention]

The conventional capsiel recovery method described above is a method of recovering the capsiel by burning the packing made of synthetic resin, and therefore has the following drawbacks.

(1) Since the capsiels are melted at the same time as the burning of the packing, the recovery rate of the capsiels from the unburned residue does not reach 100%.

(2) Sulfurous acid gas (S
Oxide gas such as O ₂ ) is generated, and the smoke emission causes pollution problems. In addition, this smoke exhaust treatment causes the size of the equipment as a whole to increase.

(3) There are many parts that depend on human means, including the above-mentioned flue gas treatment.

This invention has a better capsier than a used cap.
The problem is how to realize a packing separation method and device for caps that can be collected at a rate of 100% and can be automated with no pollution.

[Means for solving problems]

Among the inventions, the method for separating packing of the cap is the first invention, wherein the cap is cooled by a low temperature liquefied gas, and the packing is separated from the cap as it is due to a difference in thermal contraction rate between the cap shell and the packing. ,
The above problem is solved by separating the cap into a cap shell and a packing.

In the packing separating device for a cap which is the second invention, a low-temperature liquefied gas is filled, and a cooling unit that cools the cap by the low-temperature liquefied gas and a cap supplied from the cooling unit are vibrated or shocked. The method according to the first aspect of the present invention is realized by providing the cap and the packing with a separating portion that separates the cap in its original form.

〔Example〕

An apparatus according to an embodiment of the present invention will be described below with reference to FIGS. 1 to 6.

As shown in FIGS. 1 to 6, this apparatus is provided with a hopper 1 for storing a cap, a cooling unit A filled with liquefied nitrogen and cooling the cap with the liquefied nitrogen, and a cooling unit A supplied from this cooling unit A. The cap includes a separating section B for vibrating or impacting the cap to separate the cap into a cap shell and a packing, a cooling section A, and drive sections D and E for driving the separating section B.

The cooling unit A has a cold insulation structure, and has a cooling tank 2 in which a concave portion 2a filled with liquefied nitrogen 21 is formed, and a supporting member (not shown) by a shaft 11 in the concave portion 2a of the cooling tank 2. It is composed of a cylindrical rotating body 3 supported via The inner surface of the recess 2a of the cooling tank 2 is formed into a curved surface such that the inner surface of the recess 2a and the side surface of the rotating body 3 have a constant gap. As shown in FIG. 2, the cooling tank 2 is provided with an inclined surface 2b that gradually descends and a guide portion 22 that continuously projects to the outside of the cooling tank 2 on the upper portion of the right side surface thereof. The outer peripheral rectangular plate-shaped extruding blades 13, 13, ... Are attached to the rotating body 3 at regular intervals in the circumferential direction and at a predetermined angle with respect to the radial direction of the rotating body 3. . The push-out blade 13 is formed in a so-called loose-saw shape in which a plurality of rectangular plate-shaped members are continuously arranged at regular intervals. The edge of the extrusion blade 13 is positioned so as to move along the inner surface of the recess 2a of the cooling tank 2 with a slight gap as the rotating body 3 rotates. A sprocket wheel 14 is attached to one end of a shaft 11 of the rotor 3, and a chain 18 is wound around the sprocket wheel 14. The liquefied nitrogen 21 is filled in the cooling tank recess 2a and is replenished from the supply pipe 23 so that the liquid height is kept constant in the cooling tank recess 2a.

The separation part B is attached to a separation tank 6 and a shaft 12 supported on the upper portion of the separation tank 6, and has a truncated conical external appearance and a hollow inside. When,
It is composed of a belt conveyor 9 located below the separating rotary body 7. As shown in FIG. 5, the separation tank 6 has inclined surfaces 6a and 6b on its inner left and right side surfaces so that the distance between both side surfaces gradually decreases as it goes downward, and an opening is formed on the left side surface thereof. 6b. As shown in FIG. 4, the separation tank 6 has an inclined portion 6c on the inner surface of its central portion,
A concavity 6d is provided below the position where the take-out rotating body 8 is attached, following the inclined portion 6c. The inner surface of the recess 6d of the separation tank 6 is formed into a curved surface such that the inner surface and the side surface of the take-out rotating body 8 have a constant gap. Also,
As shown in FIG. 6, the separation tank 6 has an inclined surface 6e that gradually descends and a guide portion 25 that continuously projects to the outside of the separation tank 6 on the upper left side surface thereof. As shown in FIG. 4, the shaft 12 is rotatably supported by shaft supporting portions 20 attached to the upper surfaces of the left and right sides of the separation tank 6. The separating rotary body 7 is attached to the shaft 12 by its attaching portion 7a, and the take-out rotary body 8 is attached by an attaching member (not shown). A sprocket wheel 15 is attached to one end of the shaft 12, and a chain 19 is wound around the sprocket wheel 15. The separated rotary body 7 is composed of a mounting portion 7a for mounting the rotary body 7 on the shaft 12 and a side wall portion 7b. The side wall portion 7b of the separating rotary member 7 has a so-called loose-saw structure in which substantially rectangular plate-shaped members are continuously arranged at regular intervals in the circumferential direction. The take-out rotating body 8 has a structure similar to that of the rotating body 3 in the cooling tank 2, is attached at regular intervals in the circumferential direction thereof, and is attached at a predetermined angle with respect to the radial direction of the rotating body 8. Extruding blades 13 ', 1 having a rectangular plate shape
3 ', ... This extruding blade 13 ′ is a cooling tank 2
Like the push-out blades 13 attached to the rotating body 3, it is formed in a so-called loose-saw shape. The end edge of the extrusion blade 13 ′ is positioned so as to move on the inner surface of the recess 6 d of the separation tank 6 with a slight gap as the rotating body 8 rotates. As shown in FIG. 5, the belt conveyor 9 has rollers 24, 24 at its left and right ends, and a part of the belt conveyor 9 passes through the opening 6 b of the separation tank 6.

The drive unit D is composed of a motor 4 fixed to a base 5 and a sprocket wheel 16 attached to one end of a drive shaft of the motor 4. A chain 18 is wound around the sprocket wheel 16.
The drive unit D can drive the cooling unit A via the.

Like the drive unit D, the drive unit E includes a motor 10 fixed to the base 5 and a sprocket wheel 17 attached to one end of the drive shaft of the motor 10. A chain 19 is wound around the sprocket wheel 17, and the drive unit E can drive the separation unit B via the chain 19.

Next, a method of separating the cap into the cap shell and the packing by this device will be described with reference to FIGS. 1 to 6.

The cap stored in the hopper 1 is put into the concave portion 2a of the cooling tank 2 in the direction of arrow a by an appropriate transfer means. The rotor 3 is rotated in the direction of arrow c by driving the chain 18 in the direction of arrow b by the motor 4, and the cap inserted in the direction of arrow a is pushed out in the direction of arrow c by the extrusion blade 13. Cap is cooling tank 2
While being extruded in the direction of arrow c by the extrusion blade 13 inside, it is immersed in the liquefied nitrogen 21 and cooled. At this time,
Due to the difference in heat shrinkage between the capsule and the packing,
The packing comes off from the cap. When the cap is peeled off, that is, the cap shell and the packing are extruded by the extrusion blade 13 and reach the upper end of the inclined surface 2b of the cooling tank 2, the cap rolls down on the inclined surface 2b and the inclined surface of the guide portion 22 and the arrow a Falling in the direction
Falls inside the side wall 7b. The separation rotary body 7 and the take-out rotary body 8 are rotated in the arrow a direction by driving the chain 19 in the arrow k direction by the motor 10.
When the separation rotor 7 is rotated, vibration or impact is applied to the capsiel and the packing, and the caps are moved in the direction of the arrow f, while the packing is provided on the side wall portion 7b of the separation rotor 7. Since it passes through the gap and falls in the direction of arrow g, it is separated into a cap shell and a packing. The separated capsiel is moved in the direction of arrow f inside the side wall portion 7b of the separating rotary body 7 to reach the side edge of the separating rotary body 7, and then falls in the direction of arrow j, so that the inclined portion 6c of the separating tank 6 is separated. Rolling down, the recess 6 of the separation tank 6
Moved to d. The separated packings dropped in the direction of arrow g are collected on the belt conveyor 9 and transferred in the direction of arrow h. The packing is transferred to the open end of the opening 6b of the separation tank 6 by the belt conveyor 9 and dropped outside the separation tank 6 by dropping in the direction of arrow i. The cap shell moved to the recess 6d of the separation tank 6 is pushed out in the direction of arrow e by the take-out rotor 8 and the pushing blade 13 'which are rotating in the direction of arrow e. The cap shell is pushed out by the extruding blades 13 ', and the inclined surface 6 of the separation tank 6
e When it reaches the upper end, it rolls down on the inclined surface 6e and the inclined surface of the guide portion 25 and falls in the direction of arrow l, and the separation tank 6
Taken out.

In the above method, the cap is cooled by liquefied nitrogen, and during this cooling, the packing is separated from the cap due to the difference in heat shrinkage between the cap shell and the packing, and the cap is left to return to room temperature, so that the cap shell It is possible to recover 100% of the capsiel without causing any material change. In addition, since liquefied nitrogen is harmless even when evaporated, a process for treating harmful substances is unnecessary. Further, the above-mentioned apparatus can perform processing from the introduction of the cap to the separation and collection of the cap shell and packing without depending on human means.

Since this apparatus does not use the so-called floating separation method using water in the separation process between the capsule and the packing, a post-drying treatment is not required after the capsiel and the packing are collected.

〔The invention's effect〕

According to the first aspect of the present invention, according to the first aspect of the present invention, the capping is separated from the cap in its original form by cooling the cap with a low temperature liquefied gas, and by the difference in the heat shrinkage ratio between the capsiel and the packing. Since the cap is separated and the cap is separated into the cap and packing, it is possible to recover 100% of the cap and to separate the cap without producing harmful substances.

According to the second aspect of the present invention, the packing separation device for a cap is filled with a low temperature liquefied gas, and a cooling unit for cooling the cap with the low temperature liquefied gas and a cap supplied from the cooling unit are vibrated or impacted. In addition to this, in addition to the above effects, the cap is automatically separated from the capsiel and the packing by separating the caps from the capsiel and the packing, without depending on human means. It can be separated into and recovered.

[Brief description of drawings]

FIG. 1 is a front view showing an outline of a packing separating device for a cap which is an embodiment of the present invention, FIG. 2 is a front view showing a cooling part of the device, FIG. 3 is a right side view thereof, and FIG. FIG. 5 is a front view showing a separating part of the apparatus, FIG. 5 is a left side view of the same, FIG. 6 is a right side view of the same, and FIG. Is. A ... Cooling unit, B ... Separation unit, 26 ... Liquefied nitrogen (low-temperature liquefied gas), 50 ... Cap, 51 ... Cap shell, 54 ... Packing.

Claims (2)

[Claims] 1. A method for separating a cap consisting of a metal cap shell and a synthetic resin packing attached to the cap shell into a cap shell and a packing, wherein the cap is cooled by a low temperature liquefied gas. Then, the packing is separated from the cap as it is due to the difference in heat shrinkage between the cap shell and the packing, and the cap shell and the packing are separated. 2. A device for separating a cap consisting of a metal cap shell and a synthetic resin packing attached to the cap shell into a cap shell and a packing, which is filled with a low temperature liquefied gas, By vibrating or impacting the cooling part that cools the cap with the low temperature liquefied gas and the cap supplied from this cooling part,
A cap packing separating device comprising a cap shell and a separating part for separating the cap into a packing as they are.