JP2008237941A - Grinding device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grinding device which prevents magnetic members such as steel-made components, which are contained in materials to be ground such as paper sheets, documents, waste materials and waste products, from interfering with the grinding of the paper sheets and so on, also prevents the magnetic members from being discharged together with the ground paper sheets and so on, and easily performs the separation and removal. <P>SOLUTION: A drum 1 equipped with a feeding hole 1a and a discharging hole 1b is installed in a lateral direction, and a rotary shaft 2, which is horizontal to the drum 1, is laterally stretched, and the rotary shaft 2 is rotated by a motor 4. Radial link chains 3 are installed in a plurality of lines in the rotary shaft 2 in the drum 1, and a movement-restricting rotary disk 5 and an air-sending blade 6 are installed on the discharging side of the rotary shaft 2. A pocket 7 is provided in the inner circumference wall of the lower part of the drum 1, and an openable and closable door 7 is provided in the pocket, and a magnet 8 is installed on the door. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention mainly relates to documents, magazines, materials bound with steel connectors, architectural waste with nails and bolts, plastic waste with steel components, glass links, and chain links that rotate concrete waste. It is a crushing device that crushes and crushes into fine pieces by hitting the chain, and relates to a technology that captures magnetic pieces such as steel connectors, nails and bolts and separates them from other pieces. .

  The present inventor puts magazines, paper, materials, building waste, glass waste such as glass bottles, plastic waste, etc. into the drum using the link chain and chain, and hits and crushes with the chain and link chain rotating in the drum. We have developed a crushing device for crushing. A known technique is disclosed in Japanese Patent Application Laid-Open No. 8-215591.

However, this device can crush and pulverize thick magazines, documents, waste wood, waste glass, waste plastic, etc. well, but steel members such as connectors for connecting documents, file connection fittings, waste wood nails and bolts, etc. Was difficult to crush and was either stored in a drum or discharged with shredded and crushed pieces. In the former case, not only the crushing / crushing force is reduced, but also the drum / chain / link chain is damaged, and in the latter case, the separation / separation process is required before the crushing / crushing material is disposed of.
Japanese Patent Laid-Open No. 8-215591

  The present invention eliminates these conventional problems, prevents a magnetic member such as a steel member contained in the object to be crushed from hindering crushing and crushing, It is an object of the present invention to provide a crushing device that can easily exclude magnetic members.

The configuration of the present invention that solves this problem is as follows.
1) Crushing by rotating a plurality of chains or links in a drum having an inlet for the object to be crushed and a discharge port for the crushed pieces, and hitting the object to be crushed with the same chain or link chain. In the device
A crushing apparatus characterized in that a permanent magnet or an electromagnet is provided on a part of the inner peripheral wall of the drum and attracts and captures a magnetic material piece contained in the object to be crushed 2) In a drum equipped with a permanent magnet or an electromagnet The crushing device according to 1), wherein the peripheral wall portion can be freely opened and closed, and the captured magnetic material pieces of the crushed object can be easily removed to the outside. 3) The drum inner peripheral wall portion to which a permanent magnet or electromagnet is attached is expanded outward. The crushing device according to 1), wherein a pocket is formed so that the magnetic pieces adsorbed in the space of the pocket can be accommodated. 4) Inner peripheral wall of the lower part of the drum on the feed direction side from the bottom to the top of the chain or link chain 3) The crushing device according to 3), wherein the pocket is provided with a pocket 5) The crushing device according to 3) or 4), wherein a part of the wall surface of the pocket can be freely opened and closed 6) A cylindrical body made of a magnetic material is provided in the pocket space. Multiple rows and tubes The crushing device according to 3) or 4), wherein a permanent magnet or an electromagnet can be inserted and removed, and a part of the wall surface of the pocket wall can be freely opened and closed. The crushing apparatus according to any one of 1) to 6), which is attached to a position on a nearby side surface, 8) the crushing device provided on a side surface near a discharge port of a crushing strip of a drum in which a permanent magnet or an electromagnet is installed sideways. It exists in the crushing apparatus in any one of 1) -7).

In the present invention, by providing a permanent magnet or electromagnet on a part of the inner peripheral wall of the drum, the steel member crushed by the chain / link chain and separated / exposed is adsorbed to the permanent magnet or electromagnet, and is captured and drum. Fixed to the inner wall. As a result, it is possible to reduce damage with the chain / link chain and avoid damage.
In particular, in the case where a pocket is formed by inflating the inner peripheral wall to which a permanent magnet or electromagnet is attached to the outside, magnetic pieces such as staples, nails, and file fittings are accommodated in the pocket to further reduce the collision with the chain and link chain. And can reduce damage further.
Further, if the part of the inner peripheral wall where the permanent magnet / electromagnet is provided can be opened and closed, the adsorbed magnetic body piece can be removed easily and quickly.

In the present invention, a permanent magnet or an electromagnet is exposed to the inner peripheral wall of the drum and directly adsorbs the magnetic piece, and a magnetic layer made of steel or the like is attached to the surface of the magnet (such as magnetic force adsorption). It is preferable to adsorb the magnetic material pieces that are crushed on the surface because damage to permanent magnets and electromagnets can be reduced. The magnetic layer is preferably formed by inserting a rod-like or plate-like permanent magnet or an electromagnet into a steel cylinder having a hollow circular or rectangular cross section.
Further, in the present invention, in order to easily remove the magnetic piece that has been attracted, the permanent magnet or the electromagnet has no magnetic force, the permanent magnet can be removed or retracted, and the electromagnet power supply can be turned on / off. It is preferable to be able to do this.
Further, it is preferable to provide a pocket for storing the magnetic material piece attracted by the permanent magnet / electromagnet outside the inner peripheral wall of the drum so that the attracted magnetic material piece does not contact the chain / link chain.
Also, the mounting position on the drum inner wall placed sideways of the permanent magnet / electromagnet is preferably a slightly higher side on the feed side of the chain / link chain than the bottom surface of the drum, and close to the inlet and outlet It is preferable to provide them respectively.
The drum is installed in a horizontal direction, a vertical direction, and an intermediate oblique direction, but the horizontal direction is preferable because the chain can be easily rotated and inserted.

Embodiments of the present invention will be described below with reference to the drawings.
This embodiment is an apparatus mainly for crushing and crushing confidential documents bound with a connector. The drum is installed sideways, the drum has an inner radius of about 40 cm, and the link chain on the inner circumference of the drum is from below. This is an example in which a pocket is provided in the lower inner peripheral wall on the side sent upward, and an electromagnet is attached to the inner surface of the door.

FIG. 1 is a plan view of the embodiment.
FIG. 2 is a side view of the embodiment.
FIG. 3 is an explanatory view showing an electromagnet mounting structure of the embodiment.
FIG. 4 is a front view showing the open / close door of the embodiment.
FIG. 5 is an explanatory diagram of the internal structure of the embodiment.

  In the figure, A is a crushing apparatus of the embodiment, 1 is a drum installed sideways with an inner radius of about 40 cm, 1a is an inlet, 1b is an outlet, 1c is an inner peripheral surface of the drum, and 1d is an inner periphery of the drum. Non-slip ridges for the object to be crushed on the surface, 2 is a rotating shaft that is horizontally mounted on the inner center of the drum 1, 3 is a link chain that is radially and double-row mounted on the rotating shaft, and 4 is a rotating shaft 2 A moving motor, 5 is a movement restricting rotating disk attached to the rotating shaft 2, and 6 is a flat fan blade attached to the discharge port side of the rotating disk, and is pivotally attached to the rotating shaft by a link. Yes. 7 is a pocket formed on the inner peripheral surface of the drum, 7a is a door that can be opened and closed by a hinge 7b constituting the peripheral wall of the pocket, 7b is a hinge, 8 is an electromagnet fixed to the inner surface of the door 7a, and 8a is a power source of the electromagnet. Code, 9 is an inspection door, 10 is a rotary valve attached to the insertion port 1a, S is a document, and R is a connecting bracket of the document.

In this embodiment, the motor 4 is operated and the link chain 3 is rotated together with the rotating shaft 2. Next, when the document S bound by the stapler or the document S bound by the connecting fitting R is introduced into the drum 1 from the insertion port 1a through the rotary valve 10, the document S is hit by the rotating link chain 3. Then, the link chain 3 and the ridges 1d of the drum inner peripheral surface 1c and the drum inner peripheral surface 1c are repeatedly collided and hit to break into pieces of about several mm. At this time, the stapler and the connecting fitting R are separated from the paper and separated or crushed and come into contact with the drum inner peripheral surface 1 c, but a part thereof is electromagnetically attracted and captured by the electromagnet 8 in the pocket 7. Since the pocket 7 bulges outward, it is unlikely to come off the electromagnet 8 in contact with the link chain 3. Moreover, since the rotation direction of the link chain 3 is a direction in which the crushed pieces of the connecting metal fitting R are sent to the pocket 7, the crushed pieces easily enter the pocket 7 and are easily captured.
On the other hand, the finely crushed piece of paper moves to the left side of the rotating disk 5 through a small gap between the outer peripheral edge of the rotating disk 5 and the drum inner peripheral surface 1c. A piece of paper larger than the gap is repeatedly crushed by the link chain 3 in the right chamber until it is smaller than the gap and can pass through.
A plurality of flat fan blades 6 are attached to the left rotating shaft 2 of the rotating disk, and the blades 6 rotate and blown along with the rotation of the rotating shaft 2 to blow the strips of paper that are moved by the air flow. It discharges from the discharge port 1b. The discharged strip is collected in a bag (not shown) or the like.

  After crushing and discharging into small pieces, the motor 4 is stopped, the bolt that has fixed the door 7a is removed, and it is opened around the hinge 7b. After that, a metal recovery box (illustrated) is placed below and the electromagnet 8 is turned off so that the magnetic force is lost, and the crushed pieces of the magnetic metal fitting R lose their attracting force and fall downward due to their own weight, or the magnetic force remains. Even if it is, it can be peeled off from the electromagnet 8 with a light force, and the fragments can be removed out of the pocket 7.

  As described above, in this embodiment, the magnetic piece such as the stapler and the coupling metal can be easily taken out of the drum 1.

The example shown in FIG. 6 is an example in which the electromagnet 20 is attached to the lowermost end of the drum 1. In this example, the magnetic pieces are attracted and fixed to the bottom of the drum 1 so that they can be removed from the inspection door 21 after the motor 4 stops.
In the figure, 20 is an electromagnet, 21 is an inspection door, and the others are the same as the structure of the embodiment.

  In another example shown in FIGS. 7 and 8, four magnetic steel cylinders 31 are vertically fixed in the space of the pocket 30, and a bar-shaped electromagnet 32 can be inserted into the cylinder 31. The bottom wall 30a of the pocket 30 can be opened and closed with a hinge 30b. Other structures are the same as in the embodiment.

In this embodiment, the staples of the magnetic material and the fragments of the connecting metal fittings enter the pocket 30 and are attracted and captured by the surfaces of the four cylindrical bodies 31 magnetized by the inserted rod-shaped electromagnets.
After crushing is completed and the motor 4 is stopped, the bottom wall 30a is opened, the rod-shaped electromagnet 32 is turned off and pulled up from the cylindrical body 31, and the magnetic force of the cylindrical body 31 is lost and the crushed pieces magnetically adsorbed on the surface are It falls with its own weight. Those adsorbed by the residual magnetic force can be easily removed by being peeled off manually with a light force.
In this example, since the electromagnet 32 is covered with the cylindrical body 31, the electromagnet 32 is not directly attracted to the electromagnet 32. Therefore, damage due to impact / collision at the time of attracting the electromagnet can be greatly reduced.

  The present invention is mainly intended for magnetic material (steel material) parts to be crushed. In addition to documents using staples, connecting brackets, and file brackets, nails and bolts are included. It can also be used for crushing plastic products containing waste building materials and steel / iron parts.

It is a top view of an Example. It is a side view of an Example. It is explanatory drawing which shows the attachment structure of the electromagnet of an Example. It is a front view which shows the opening / closing door of an Example. It is explanatory drawing of the internal structure of an Example. This is an example in which an electromagnet is attached to the lowermost end of the drum. It is explanatory drawing which shows the other example of this invention. It is explanatory drawing which shows insertion and removal of the electromagnet of the other example of FIG.

Explanation of symbols

A crushing device S document R connecting bracket 1 drum 1a inlet 1b outlet 1c drum inner peripheral surface 1d ridge 2 rotating shaft 3 link chain 4 motor 5 rotating disk 6 blade 7 pocket 7a door 7b hinge 8 electromagnet 8a power cord 9 inspection Door 10 Rotary valve 20 Electromagnet 21 Inspection window 30 Pocket 30a Bottom wall 30b Hinge 31 Cylindrical body 32 Bar-shaped electromagnet

Claims (8)

In a crushing device that rotates a plurality of chains or links in a drum having an inlet for a material to be crushed and a discharge port for a crushed piece, and hits the material to be crushed with the same chain or link chain to crush it into pieces. ,
A crushing apparatus, wherein a permanent magnet or an electromagnet is provided on a part of an inner peripheral wall of a drum, and a magnetic piece contained in an object to be crushed is adsorbed and captured.   The crushing apparatus according to claim 1, wherein a drum inner peripheral wall portion to which a permanent magnet or an electromagnet is attached is made openable and closable so that the magnetic substance pieces of the object to be crushed can be easily removed to the outside.   The crushing apparatus according to claim 1, wherein a drum inner peripheral wall portion to which a permanent magnet or an electromagnet is attached is expanded outward to form a pocket so that a magnetic piece adsorbed in the space of the pocket can be accommodated.   The crushing apparatus according to claim 3, wherein a pocket is provided on an inner peripheral wall of the lower part of the drum on the side in the feed direction from the bottom of the chain or the link chain.   The crushing device according to claim 3 or 4, wherein a part of the wall surface of the pocket is openable and closable.   5. A plurality of rows of magnetic cylinders are provided in the pocket space, a permanent magnet or an electromagnet can be inserted into and removed from the cylinder, and a part of the wall of the pocket can be opened and closed. Crushing equipment.   The crushing apparatus according to any one of claims 1 to 6, wherein the drum is installed sideways, and a permanent magnet or an electromagnet is attached to a position on a side surface near the inlet.   The crushing apparatus in any one of Claims 1-7 provided in the side surface near the discharge port of the crushing strip of the drum in which the permanent magnet or the electromagnet was installed sideways.

Images