JP4155445B2 - Waste paper packaging equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a waste paper packaging apparatus for cutting and compressing and packaging waste paper such as newspapers and magazines.
[0002]
[Prior art]
As a conventional waste paper packaging apparatus of this type, one disclosed in Japanese Patent Laid-Open No. 2000-168722 is known. The waste paper packaging apparatus disclosed in the publication includes a hopper that forms a space for waste paper stirring inside, a conveyor that supplies waste paper from above into the hopper, and a fluffer for waste paper stirring provided in the hopper. And a compression chamber for storing the waste paper agitated in the hopper, and a ram for compressing the agitated waste paper accommodated in the compression chamber.
[0003]
A fixed blade is provided at the inlet of the compression chamber, and a movable blade is provided at the upper edge of the ram. As the ram moves, the fixed blade and the movable blade cooperate with each other in the compression chamber. The waste paper accumulated at the entrance was cut.
Such a waste paper cutting mechanism using a fixed blade and a movable blade is also disclosed in Japanese Utility Model Publication No. 55-49287.
[0004]
[Problems to be solved by the invention]
In the above-described conventional waste paper packaging device, the edge of the fixed blade and the edge of the movable blade are arranged in parallel, and the waste paper is cut by so-called push cutting. Therefore, since the cutting resistance is large and an excessive resistance force acts on the ram that moves the movable blade, an actuator having a large power is provided in the drive source of the ram. Nevertheless, depending on the amount of waste paper accumulated at the entrance of the compression chamber and the quality of the paper, a phenomenon that sometimes cannot be cut in one stroke has occurred. In that case, the machine is controlled to detect an abnormality and stop, but after that, the ram must be reciprocated multiple times by manual operation to cut the waste paper, which also has the problem of poor workability. there were.
[0005]
The present invention has been made in view of the above-described circumstances, and an object of the present invention is to smoothly cut waste paper accumulated at the entrance portion of the compression chamber with a small cutting force.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, the present invention comprises a hopper that forms a space for stirring a waste paper therein, a waste paper supply means that feeds the waste paper from above into the hopper, a stirring means provided in the hopper, A compression chamber that communicates with the bottom of the hopper, a compression member that moves through the compression chamber and compresses the waste paper contained in the compression chamber, a fixed blade provided at an inlet portion of the compression chamber, and a compression member A movable blade that cuts the waste paper in cooperation with the fixed blade;
While forming the edge of the fixed blade in a shape where the center part is recessed compared to both ends,
A relative inclination angle is set between the edge of the fixed blade and the edge of the movable blade, and the edge of the movable blade crosses the edge of the fixed blade sequentially from both ends toward the center. (Claim 1).
[0007]
As described above, according to the present invention, the edge of the movable blade crosses the edge of the fixed blade sequentially from both ends toward the center portion, so that the waste paper can be cut smoothly. Moreover, the waste paper is compressed to the central portion by cutting resistance. Therefore, there is no fear that the waste paper is biased toward one end due to the cutting resistance, and a uniform compressed package can be realized.
[0008]
Here, the edge of the fixed blade can be formed in a “<” shape with a depressed central portion (claim 2). In that case, the edge of the movable blade is formed in a chevron shape with the central portion protruding, and the inclination angle from the edge central portion of the movable blade toward both ends is set to be larger than the inclination angle from the edge central portion of the fixed blade toward both ends. It is preferable to set a small value (claim 3). By comprising in this way, the effect of the said this invention can be obtained easily, without requiring a complicated design and process.
[0009]
Further, if the guide surface is continuously formed from the scooping surface of the fixed blade to a certain length, chips can be smoothly guided into the hopper by this guide surface. As a result, there is no possibility that chips are clogged in the cutting work portion by the fixed blade and the possible blade, and a stable and smooth cutting action can be maintained.
[0010]
Furthermore, by making the inner side surface of the hopper tilted outward or perpendicular to the horizontal plane or at least in a certain region continuous with the guide surface, the chips guided to the guide surface and moved into the hopper Since it can be moved smoothly along the inner surface of the hopper, clogging of chips can be prevented more reliably.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a sectional front view showing the entire configuration of a waste paper packaging apparatus according to an embodiment of the present invention, and FIG. 2 is a sectional side view of the same. With reference to these drawings, an outline of the waste paper packaging apparatus according to this embodiment will be described first.
[0012]
The waste paper packing apparatus includes a hopper 1 that forms a space for stirring the waste paper therein, a conveyor 2 (scrap paper supply means) that supplies waste paper from above into the hopper 1, and a fluffer 3 ( Stirring means), a compression chamber 4 for storing the waste paper cut by the hopper 1, a ram 5 (compression member) for compressing the stirred waste paper stored in the compression chamber 4, and the compressed waste paper are bound together. A bundling machine (not shown).
[0013]
The hopper 1 is a structure having a hollow vertical shape inside, and has an inlet 6 for supplying waste paper at the top (see FIG. 2). The leading end portion of the conveyor 2 is inserted into the carry-in port 6, and the waste paper carried by the conveyor 2 is dropped into the inside from the upper part of the hopper 1.
[0014]
The fluffer 3 is supported horizontally at a position substantially at the center height inside the hopper 1. The fluffer 3 has a function of striking the waste paper with a chain member 3a provided on the peripheral surface of the rotating shaft, and cutting and stirring the waste paper with a blade member 3b provided at the tip of the chain member 3a. In addition, as a means for stirring the waste paper in the hopper 1, various means have been conventionally proposed in addition to such a configuration, and it goes without saying that these various stirring means can be applied to the present invention.
[0015]
The compression chamber 4 communicates with the bottom of the hopper 1 and accommodates waste paper that has been cut and dropped inside the hopper 1. A ram 5 is movable in the compression chamber 4. The ram 5 is reciprocated by a drive cylinder (not shown) to compress the waste paper accommodated in the compression chamber 4 and transfer the compressed waste paper to a carry-out path 7 provided on the side of the compression chamber 4.
[0016]
A fixed blade 10 is provided at the inlet portion 4 a of the compression chamber 4 communicating with the hopper 1, while a movable blade 20 is provided at the upper front end of the ram 5. The fixed blade 10 and the movable blade 20 have a function of cooperatively cutting the waste paper that does not enter the compression chamber 4 and is deposited on the inlet portion 4a.
[0017]
A bundling machine (not shown) is installed in the middle of the carry-out path 7, and bundles the bale compressed to a set length with a wire or a string. The bound bale is unloaded from the outlet of the unloading path 7 and is transported to a papermaking raw material manufacturer or the like.
[0018]
3 to 6 are diagrams for explaining the configuration and operation of the fixed blade and the movable blade. In FIGS. 4A, 5A, and 6A, the fixed blade and the movable blade are hatched to emphasize these members.
The edge of the fixed blade 10 is formed in a “<” shape with the center portion recessed compared to both ends, while the edge of the movable blade 20 is formed in a chevron shape with the center portion protruding. Here, the inclination angle α from the edge central portion of the movable blade 20 toward both ends is set to be smaller than the inclination angle β from the edge central portion of the fixed blade 10 toward both ends (see FIG. 4A).
[0019]
The fixed blade 10 and the movable blade 20 formed in this way cooperate with each other as the ram 5 moves straight to cut the waste paper deposited on the inlet portion 4 a of the compression chamber 4. That is, when the movable blade 20 moves integrally with the ram 5 in the direction of the arrow in FIG. 4, first, the edge of the fixed blade 10 and the edge of the movable blade 20 intersect at both end portions as shown in FIG. The waste paper is cut at the intersection.
The portion where the edges of the fixed blade 10 and the movable blade 20 intersect moves to the center as the ram 5 moves straight (refer to FIGS. 4 to 6 sequentially). Since the waste paper is cut at the intersection, the waste paper can be cut smoothly like scissors without being pushed out. At this time, the cutting resistance acting on the movable blade 20 is much smaller than that of the conventional push-cut device. Therefore, the drive cylinder of the ram 5 can be of low power, which contributes to lowering the equipment cost. it can.
[0020]
Further, a guide surface 11 is formed from the scooping surface 10a of the fixed blade 10 continuously above it with a certain length. The guide surface 11 has a function of smoothly guiding waste paper chips into the hopper 1. Here, it is preferable that the inclination angle of the guide surface 11 with respect to the horizontal plane is substantially the same as the angle of the fixed blade 10. In other words, the guide surface 11 is preferably formed continuously on the same plane as the scooping surface 10 a of the fixed blade 10. By forming in this way, the chips pushed out on the scooping surface of the fixed blade 10 along with the cutting operation can be moved to the guide surface 11 without being blocked to prevent clogging, and the smooth cutting operation is continued. It becomes possible.
[0021]
Furthermore, the inner side surface 1a of the hopper 1 that is in contact with the upper end edge of the guide surface 11 is preferably formed so as to incline outward in a certain region perpendicular to or upward from the horizontal plane. With this configuration, the chips guided to the guide surface 11 and moved into the hopper 1 can be smoothly moved along the inner surface of the hopper 1, so that the clogging of chips can be prevented more reliably. It becomes possible.
[0022]
In addition, this invention is not limited to embodiment mentioned above.
The edge shape of the fixed blade 10 only needs to be a shape in which the central portion is recessed compared to both ends, and may be, for example, a curved shape as shown in FIG.
Further, the edge shape of the movable blade 20 has a relative inclination angle with the edge of the fixed blade 10, and is configured to sequentially cross the edge of the fixed blade 10 from both ends toward the center portion. I just need it. For example, the edge of the movable blade 20 can be formed in a linear shape as shown in FIG. 7B or an inverted “<” shape as shown in FIG.
[0023]
【The invention's effect】
As described above, according to the waste paper packaging device of the present invention, the edge of the movable blade crosses the edge of the fixed blade sequentially from both ends toward the center portion, so that the waste paper can be cut smoothly. it can. Moreover, the waste paper is compressed to the central portion by cutting resistance. Therefore, there is no fear that the waste paper is biased toward one end due to the cutting resistance, and a uniform compressed package can be realized.
[Brief description of the drawings]
FIG. 1 is a cross-sectional front view showing an overall configuration of a waste paper packaging apparatus according to an embodiment of the present invention.
FIG. 2 is a cross-sectional side view showing the overall configuration of the apparatus.
FIG. 3 is a perspective view showing a configuration of a fixed blade and a movable blade.
4A and 4B are diagrams for explaining the configuration and operation of a fixed blade and a movable blade, in which FIG. 4A is a plan view and FIG. 4B is a cross-sectional front view.
5A and 5B are diagrams for explaining the operation of the fixed blade 10 and the movable blade 20 following FIG. 4, wherein FIG. 5A is a plan view and FIG. 5B is a cross-sectional front view.
6A and 6B are diagrams for explaining the operation of the fixed blade and the movable blade following FIG. 5, in which FIG. 6A is a plan view and FIG. 6B is a sectional front view.
FIG. 7 is a plan view showing a modification of the present invention.
[Explanation of symbols]
1: Hopper 2: Conveyor 3: Fluffer 4: Compression chamber 5: Ram 7: Unloading path 10: Fixed blade 10a: Scooping surface 11: Guide surface 20: Movable blade

Claims (4)

A hopper that forms a space for stirring the waste paper inside, a waste paper supply means that feeds the waste paper into the hopper from above, a stirring means provided in the hopper, and a compression chamber communicating with the bottom of the hopper A compression member that moves through the compression chamber and compresses the waste paper stored in the compression chamber; a fixed blade provided at an inlet portion of the compression chamber; and a cooperation with the fixed blade provided in the compression member. And a movable blade for cutting the waste paper,
While forming the edge of the fixed blade in a shape where the central portion is recessed compared to both ends,
A configuration in which a relative inclination angle is set between the edge of the fixed blade and the edge of the movable blade, and the edge of the movable blade sequentially crosses the edge of the fixed blade from both ends toward the center. and,
Further, a waste paper packaging apparatus comprising a guide surface that is continuously formed from the scooping surface of the fixed blade to have a fixed length and guides chips into the hopper .   2. The waste paper packaging apparatus according to claim 1, wherein the edge of the fixed blade is formed in a "<" shape having a depressed central portion.   The edge of the movable blade is formed in a chevron shape with a central portion protruding, and the inclination angle from the edge central portion of the movable blade toward both ends is set smaller than the inclination angle from the edge central portion of the fixed blade toward both ends. The waste paper packaging apparatus according to claim 2, wherein An inner surface of the hopper, the constant region continuous with at least the guide surface in any one of claims 1 to 3, characterized in that is formed to be inclined outwardly towards the vertical or upward relative to the horizontal plane Waste paper packaging device as described.

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