JPH1133790A - Volume reduction device for paper cup - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a paper cup volume reduction device in small size which can reduce the volume efficiently at a low cost. SOLUTION: This device is equipped with a pair of rollers 41 and 42. The both rollers respectively comprise roller shafts 45 and 48 rotatably mounted to a frame 40, a plural number of ring shaped short diameter parts 46 and 49 integrally formed on the outer radius of the roller shafts 45 and 48, and a plural number of wheel shaped long diameter parts 47 and 50 consisting of concave parts and convex parts alternately in a circumferential direction. The concave part is integrally formed on the outer radius of the roller shafts 45 and 48 for retracting the paper cup, and the convex part is formed for pushing the paper cup retracted in the concave part between the both rollers 41 and 42. Thus, the concave parts and the convex parts of the long diameter parts 47 and 50 work together, and the paper cup is surely led and volume-reduced between the both rollers 41 and 42.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper cup reducing machine which is installed in a used paper cup collecting device or the like, and which surely and efficiently reduces the volume of an inserted paper cup.

[0002]

2. Description of the Related Art In recent years, the number of vending machines for cans of various beverages in cans has been significantly increased, and the treatment of used empty cans resulting from these vending machines has become a social problem. That is, these empty cans are incombustible and cannot be disposed of by general consumers.
Furthermore, there is a growing demand for resource recovery and regeneration, and the development of recovery technologies including the reduction of the volume of empty cans and the like and the spread of recovery devices are remarkable.

[0003] On the other hand, the provision of various beverages using paper cups (in the specification of the present application, the concept includes plastic cups and so-called PET bottles, etc.) is not provided by vending machines as much as in cans. However, they are used heavily in so-called snack restaurants and the like that handle hamburgers and the like because of their simplicity of handling and low cost, and the treatment of used paper cups becomes a problem as in the case of empty cans.

However, since paper cups are inherently combustible and can be disposed of in the same manner as other garbage, there are not many prior arts relating to a paper cup collecting device, and detailed citations are avoided. These are listed below. That is, for example, Japanese Unexamined Patent Publication No. 8-67306 (Document 1) introduces a “paper cup and bottle can separation device” that separates paper cups from empty bottle cans by press deformation and reduces the volume. Also, Japanese Utility Model Laid-Open No. 6-86886 (Reference 2).
Discloses a "paper cup disposal box" that drives a roller that detects the insertion of a paper cup and reduces the volume of the paper cup. Furthermore, Japanese Patent Application Laid-Open No. 7-101501 (Document 3) introduces a “paper container collection device” that efficiently reduces and collects paper cups and paper packs using a belt press.

[0005] Focusing on the technology of reducing the volume of paper cups, the above-mentioned document 1 is of a manual type and is inefficient, and the documents 2 and 3 have complicated structures such as those using a belt. There are many. Only FIG. 7 of Document 2 introduces a volume reduction machine having a relatively simple structure in which a flat press plate is driven by a press motor to press and flatten a paper cup. This method is commonly used for empty can collection devices (for example, Japanese Patent Application Laid-Open No. 5-73759 (Document 4), FIG. 3).
reference).

The inventors of the present invention also prototyped a volume reducing machine of this type at first, but faced the following problems. In other words, in each of these methods, the flattened object is dropped into the collection container by its own weight by retracting the press after flattening the object. In this case, an empty metal can has a large weight and does not cause a problem, but the paper cup itself is extremely lightweight and used, so that a small amount of remaining or adhering beverage material is included. In particular, due to the effects of sweeteners, etc., as the pressing operation is repeated, these sweeteners become adhesive and adhere to the surface of the press, the flattened paper cup does not stick to this press, and the press process is stagnant. I will.

[0007] In addition, as a volume reducing machine used in an empty can collection device, for example, Japanese Patent Application Laid-Open No. 5-185294 (Document 5) discloses a method of reducing the volume by guiding an empty can between a pair of rotating rollers. Things are introduced. However, if this is diverted to a paper cup, it is difficult for the paper cup to enter between the rollers because of its light weight. If the diameter of the roller is made extremely large, the configuration becomes substantially similar to that of the belt type introduced in the above-mentioned documents 2 and 3, and the paper cup can be introduced between the rollers. Will greatly increase the external price.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a compact paper cup volume reducing machine which can surely and efficiently reduce the volume of a paper cup. .

[0009]

According to a first aspect of the present invention, there is provided a paper cup volume reducing machine, comprising: a frame; a pair of first and second rollers rotatably mounted on the frame in parallel with each other;
And a drive unit that drives the two rollers to rotate in opposite directions, wherein the paper cup is reduced in volume by passing between the two rotating rollers.
The first and second rollers are respectively a roller shaft rotatably mounted on the frame, and a plurality of ring-shaped rollers integrally formed on the outer periphery of the roller shaft and arranged at predetermined intervals in the axial direction. A short diameter portion of the sheet, and integrally formed on the outer periphery of the roller shaft, thinner than the thickness of the short diameter portion, disposed between the respective short diameter portions, and a concave portion for drawing the paper cup into the outer periphery thereof. A plurality of gear-shaped long-diameter portions in which a paper cup drawn into the concave portion and a convex portion for pushing the paper cup between the rollers are alternately formed in the circumferential direction;
The two rollers are arranged such that the axial center position of the minor diameter portion of the roller coincides with the axial center position of the major diameter portion of the second roller.

Further, the paper cup volume reducing machine according to claim 2 is
In claim 1, the diameters of the short-diameter portion and the long-diameter portion are the same between both rollers, the center-to-center distance between the two rollers is D, the diameter of the short-diameter portion is S, and the maximum diameter of the long-diameter portion is L. Then, the relationship of S <D <L is established.

The paper cup volume reducing machine according to claim 3 is
In claim 2, the axial gap between the long diameter portion of the first roller and the long diameter portion of the second roller is set to 1 to 5 mm.

The paper cup volume reducing machine according to claim 4 is
In any one of the first to third aspects, the circumferential position of the concave portion of each major diameter portion is sequentially shifted by a predetermined angle in a direction opposite to each other by both rollers as the axial direction advances.

Further, the paper cup volume reducing machine according to claim 5 is
5. The roller according to claim 4, wherein the roller is rotatably mounted on a shaft parallel to the rollers and swings between a position near an intersection of the rollers and a position away from the roller to press a paper cup between the rollers. With a pressing plate that leads to the

Further, the paper cup volume reducing machine according to claim 6 is
According to a fifth aspect of the present invention, a drive source for swinging the pressing plate is shared by a drive unit for rotating both rollers.

According to a seventh aspect of the present invention, there is provided a paper cup volume reducing machine, comprising: a frame; a pair of first and second rollers rotatably mounted on the frame so as to be parallel to each other; A paper cup volume reduction device that includes a driving unit that reduces the volume of a paper cup by passing the paper cup between the two rotating rollers, wherein the first roller is a first roller rotatably attached to the frame. A plurality of ring-shaped first short diameter portions and a first long diameter portion which are integrally formed on the outer periphery of the first roller shaft and are alternately arranged in the axial direction. The second roller is a second roller shaft rotatably mounted on the frame. The second roller is integrally formed on the outer periphery of the second roller shaft, and the axial center position of the second roller shaft is the axis of the first long diameter portion. Coincide with the direction center position Are formed integrally on the outer periphery of the plurality of ring-shaped second short diameter portions and the second roller shaft, and the axial center position thereof is in the axial direction of the first short diameter portion. A plurality of second major diameters which are disposed between the respective second minor diameter portions so as to coincide with the center position, and which have a substantially semicircular concave portion for fitting the paper cup on the outer periphery thereof. It is provided with a part.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1 FIG. FIG. 1 is a front view of a paper cup collecting apparatus using a paper cup volume reducing machine according to Embodiment 1 of the present invention. FIG. 1 (1) is an external view, and FIG. 2 (2) is a front view. FIG. 3 is a view showing a structure of a built-in device by removing a panel. The present apparatus is installed, for example, in a corner of a snack restaurant that provides a hamburger with a drink.

In FIG. 1, reference numeral 1 denotes a front panel of the apparatus.
Reference numeral 2 denotes an opening / closing lid pivotally attached to the front panel 1 at a lower end thereof to open and close the front surface of a paper cup input port 20 formed by providing an opening in a part of the front panel 1, and 3 is provided at an upper portion of the front panel 1. A CRT display installed so that its display screen can be seen from the outside through the opening displays contents of a game machine activated when a paper cup useful as a collected product is inserted and other information. The reason for providing such a game function is to stimulate the user's sense of eagerness and to increase the sense of paper cup collection. Reference numeral 4 denotes a volume reducing machine for reducing the volume of the paper cup determined based on the weight and size of the input material and storing the reduced volume in the collection container 5, which will be described in detail later. Reference numeral 6 denotes a trash container for storing other input materials such as empty cans.

Reference numeral 7 denotes a printer for printing a prize exchange ticket or the like in the event of a hit in a game, and reference numeral 8 denotes a ticket outlet. Reference numeral 9 denotes a control device for operating a power supply, discriminating the weight of an input material, controlling the volume reducing machine 4, and the like. 10 denotes a personal computer for storing and operating game software, and further, for grasping the collection status and transmitting information. It is a computer. Numeral 11 denotes a straw shooter for feeding a straw or the like accompanying the paper cup when the paper cup is used. As shown in FIG. 1 (1), on the front panel 1, only the paper cup is fed into the paper cup inlet, and a plastic straw or lid, and the remaining ice is fed into the straw shooter 11. The precautionary statement to do so is displayed in the form of an illustration.

FIG. 2 is a partial cross-sectional view showing the path leading to the paper cup input port 20 and the containers 5 and 6 for the input material. For easy understanding, the path is simplified and illustrated as appropriate. . FIG. 1A shows a state in which the opening / closing lid 2 is pulled out to the front (to the left in FIG. 2) and the paper cup 12 is inserted, and FIG. Lid 2
Is a view showing a state in which the paper cups 12 put in by closing the paper cups are sequentially processed.

First, the opening shape of the paper cup inlet 20 will be described. Here, since the opening / closing lid 2 that opens and closes the paper cup insertion port 20 is provided, the substantial opening shape is the opening shape when the opening / closing lid 2 is fully opened toward the user, as shown in FIG. As described above, the vertical dimension is A, and although not shown, its horizontal direction (the direction perpendicular to the plane of the drawing) is B (B> B).
A).

In each of the above-described known paper cup collecting machines, as well as the vending machine for drinks using paper cups, the user usually handles the paper cup 12 in a vertical position with its opening upward. It is. On the other hand, the reason why the opening shape of the paper cup inlet is made to be horizontally long in the present invention is that when the user inserts the paper cup 12, contrary to the common sense and customs, the paper cup 12 must be turned over. This is in order to regulate the situation. This will smoothly and naturally guide and regulate the user to discharge the often-occurring beverage liquid remnants from the paper cup 12 before entering the collection device. Of course, it goes without saying that a container for disposing of these residues is installed adjacent to the present collecting device so that the user can easily understand it.

Next, the operation after the paper cup 12 is inserted will be described with reference to FIG. When the opening / closing lid 2 is closed after the paper cup 12 is inserted from the paper cup input port 20, the paper cup 12 rolls on the bottom plate portion of the opening / closing lid 2 and falls, and
Up to the top. The cradle 13 is swingably supported by a shaft 14, and a weight 15 provided at the right end abuts a stopper 16 at a position to be rotated clockwise in the drawing, and is moved to the lower left from the horizontal. It is designed to maintain a slightly leaning posture.

It is assumed that the input material is an empty paper cup 12 as desired.
If so, the cradle 13 maintains its slightly inclined posture, the paper cup 12 falls between the guides 17 and 19, and proceeds to a pressing step by the volume reducing machine 4 described later. Even if the input material is an empty one, such as a can, or a paper cup, the contents remain in a state where the lid is covered, and if the weight is larger than the empty paper cup, Cradle 13 due to its weight
Rotates counterclockwise, the input material immediately drops and guide 1
It is guided by 7 and stored in the trash container 6.

Reference numeral 18 denotes an optical sensor provided at an upper end of a guide 19, and a plurality of optical sensors are provided at predetermined intervals in a direction perpendicular to the paper surface. Then, the presence or absence and size (length) of the paper cup 12 are determined from the detection output. Under the condition that the paper cup 12 is inserted, the volume reducing machine 4 is driven, and a pair of rollers 41
42 is rotated in the direction of the arrow to pass the paper cup 12 between these rollers 41 and 42, so that the paper cup 12
To reduce the volume. Reference numeral 43 denotes both rollers 41, as shown by a reciprocating arrow.
Swinging between a position near the intersection of 42 and a separation position,
This is a pressing plate that presses the paper cup 12 and guides the paper cup 12 between the rollers 41 and 42. In FIG. 2, the volume reducer 4 is simplified, and only the rollers 41 and 42 and the pressing plate 43 are illustrated. However, this is an essential part of the present invention, and the configuration is described in detail in FIG. I do.

The flattened paper cup 12 which has been reduced in volume by passing between the rollers 41 and 42 falls directly below and is accommodated in the collection container 5. As a result, a high-quality reduced-volume paper cup having no residue can be obtained while being separated from the others.

The information on the size of the paper cup 12 by the optical sensor 18 is once sent to the personal computer 10 and thereafter used as information for changing the setting of the winning probability of the game to be executed. For example, when the size of the paper cup 12 is large, the hit probability is increased as compared with when the size of the paper cup 12 is small, so that further improvement of the user's awareness of ejaculation is expected.

Hereinafter, the details of the volume reducing machine 4 will be described.
FIG. 3 shows the volume reducing machine 4 seen from above where the paper cup 12 is inserted.
FIG. In the figure, reference numeral 40 denotes a frame, which is attached to a position above the collection container 5 inside the main body of the collection device. A first roller 41 is a first roller shaft 45 rotatably attached to the frame 40 via a bearing 44.
And are formed integrally on the outer periphery of the first roller shaft 45,
A plurality of ring-shaped first minor diameter portions 46 disposed at predetermined intervals in the axial direction, and also integrally formed on the outer periphery of the first roller shaft 45, are formed integrally with each other. And a plurality of first long diameter portions 47 in the form of gears disposed therebetween. The thickness of the first major diameter portion 47 is the same as that of the first minor diameter portion 46.
The thickness of the gear is set to be smaller than the thickness of the gear.

Reference numeral 42 denotes a second roller, a second roller shaft 48 rotatably mounted on the frame 40 in parallel with the first roller shaft 45 via a bearing 44, and a second roller shaft 48. A plurality of ring-shaped second sheets are formed integrally on the outer periphery and are arranged at predetermined intervals in the axial direction such that the axial center position thereof coincides with the axial center position of the first major diameter portion 47. And a plurality of gear-like second long diameter portions 50 which are also integrally formed on the outer periphery of the second roller shaft 48 and are disposed between the second bearings 49. Have been. As for the second major diameter portion 50, the first major diameter portion 47
4, the details are described in detail in FIG. 4. However, the tooth forms are formed in the circumferential direction so as to be opposite to each other.

Reference numeral 51 denotes an electric motor as a drive unit for rotating the rollers 41 and 42, and reference numeral 52 denotes an intermediate bearing. In addition,
Although the gears are not shown, the motor 5
One rotation is reduced via the intermediate bearing 52 and transmitted to the first and second roller shafts 45 and 48. Then, both rollers 41 and 42 are driven to rotate in opposite directions as indicated by arrows in the figure. It is appropriate to set the rotation speed of both rollers 41 and 42 to about 10 to 40 rpm from various experimental results.

FIG. 4 is an enlarged view of one of the long diameter portions 50 viewed from the axial direction (more precisely, viewed from the lower side to the upper side of FIG. 3). The following describes the tooth shape to be used. Since the tooth shape repeats the same shape every 120 degrees, which divides the entire circumference into three equal parts, one section unit of 120 degrees will be described. First, reference numeral 53 denotes a concave portion for pulling in the inserted paper cup 12, which is formed at an angle of 40 ° with respect to the center in this example. Numerals 54 to 57 denote convex portions formed following the concave portion 53, each of which is formed at an angle of 20 ° with respect to the center, and has a function of pushing the paper cup 12 drawn into the concave portion 53 between the rollers 41 and 42. I do. Reference numeral 58 denotes a key groove formed on the inner peripheral portion of the long diameter portion 50, which regulates the position in the rotation direction with respect to the roller shaft 48 fitted at the center.

The arrow in the figure is the direction of rotation. When viewed from the direction shown in FIG. 4, the first long diameter portion 47 is located to the left of the second long diameter portion 50 in FIG.
4 to 57 are formed in the circumferential direction so as to be opposite to each other as shown in FIG. Further, the concave portion 53 and the convex portion 54-
Although only the position of the boundary H (FIG. 4) with 57 is illustrated,
As shown in FIG. 3, the first and second long diameter portions 47, 50
The circumferential position of the concave portion is sequentially shifted by a predetermined angle (for example, 20 °) in a direction opposite to each other by both rollers 41 and 42 as the roller advances in the axial direction.

By shifting the tooth mold position in the opposite direction, the paper cup 12 inserted at the intersection of the rollers 41 and 42 swings its position appropriately with the rotation of both rollers, and the tooth mold position is shifted. Compared to the case where the rollers are not shifted, the chance of being drawn between the rollers is more frequently and reliably arrived, and the efficiency of the volume reduction process is improved.

Although the relative positional relationship between the rollers 41 and 42 in the axial direction has been described above, the relative position in the radial direction (separation direction) is set as follows. That is, when the distance between the centers of both rollers is D, the diameter of the short diameter portion is S, and the maximum diameter of the long diameter portion is L, the relationship of S <D <L is established. Further, the axial gap between the first major diameter portion 47 and the second major diameter portion 50 is set to a value between 1 and 5 mm. That is, by securing a gap of 1 mm or more, both rollers 4
1 and 42 are always in a non-contact configuration, so that the dimensional accuracy in the manufacture of each part is relaxed and the cost is reduced. Also, make the gap 5
When the thickness is not more than mm, the required volume reduction rate can be secured, and the increase in the dimensions of each part can be suppressed within an appropriate range.

In the long diameter portion 50 illustrated in FIG. 4, one key groove 58 is provided.
All 50 have different shapes. For example, in the case of manufacturing by punching out a press, there is a problem that maintenance of the mold is expensive. As a countermeasure against this, the shift angle of the tooth mold (in this example, 20 °) is set to an integral fraction (in this example, 1/6) of the repeating unit angle of the tooth mold (in this example, 120 °). A method of reducing the number of types of punches for the long diameter portion by forming a plurality of key grooves as much as possible is effective for cost reduction.

Next, the structure of the pressing plate 43 and its driving mechanism will be described with reference to FIG. In FIG.
Is a pin mounted on the frame 40 in parallel with the rollers 41 and 42, 60 is a rocking piece whose one end is rotatably mounted on a pin 59, and the pressing plate 43 is a rocking piece 6
0 is attached to one end. In addition, the swinging piece 6
A long hole 61 is formed along the longitudinal direction of 0. 62
One end is a rotating piece attached to the roller shaft 45 of the roller 41, and the other end is integrally formed with a stud pin 63 that passes through the long hole 61 of the swinging piece 60.

Assuming that the swinging piece 60 and the rotating piece 62 are at the positions shown by solid lines (shown by 60 (1) and 62 (1)), the pressing plate 43 is moved to the position shown by 43 (1). That is, it is located at a position separated from the intersection of the rollers 41 and 42. When the roller 41 rotates in the direction of the arrow from this position, the stud pin 63 of the rotating piece 62 moves on the circumference indicated by C, whereby the swing guided by the stud pin 63 by engagement with the elongated hole 61. The moving piece 60 rotates clockwise about the pin 59, and reaches a maximum angle at a position indicated by a dotted line (60 (2)). At this time, the pressing plate 43
It is at the position indicated by (2), that is, the position near the intersection of the two rollers 41 and 42. Further, as the rotation of the roller 41 advances, the swinging piece 60 returns to the position shown by the solid line (60 (1)) again, and the pressing plate 43 returns to the position shown by 43 (1). That is, while the roller 41 makes one rotation, the pressing plate 43
The position indicated by (1) and 43 (2) is reciprocated one time.

As described above, since the pressing plate 43 which repeats swinging by using the same driving source as that for the roller is provided, in addition to the above-described respective measures for guiding the paper cup between the two rollers, furthermore, The pressing plate 43 forcibly presses the paper cup in the direction of the intersection between the two rollers, thereby further improving the volume reduction efficiency.

As described above, in the paper cup volume reducing machine according to the first embodiment of the present invention, the roller diameter is kept relatively small, and even if the paper cup which has been put into the adhesive is adhered to the inserted paper cup. However, since measures are taken to ensure that the paper cup is quickly and surely engaged, a small, inexpensive, and efficient volume reduction process can be performed.

Embodiment 2 FIG. 6 is a simplified view of a main part of a paper cup volume reducing machine according to Embodiment 2 of the present invention. FIG. 6 (1) is a plan view seen from above where a paper cup is inserted, and FIG. ) Is a side view seen from the axial direction. In the drawing, 70 is a frame, 71 is a first roller, a first roller shaft 72 rotatably attached to the frame 70, and a first short diameter portion integrally formed on the outer periphery of the roller shaft 72. 73 and a long diameter portion 74. A second roller 75 includes a second roller shaft 76 rotatably attached to the frame 70 and a second short diameter portion 77 and a long diameter portion 78 integrally formed on the outer periphery of the roller shaft 76. It is configured. On the outer periphery of the second major diameter portion 78, substantially semicircular concave portions 79 for fitting the inserted paper cup 12 are formed at intervals of 120 °.

As shown by arrows in FIG. 6B, the rollers 71 and 75 are driven by an electric motor (not shown) as a driving unit.
They are driven to rotate in opposite directions. Reference numeral 80 denotes a leaf spring-shaped pressing plate that presses the paper cup 12 so that the paper cup 12 once fitted into the concave portion 79 of the long diameter portion 78 does not pop out.
Reference numeral 81 denotes a guide plate for pulling the paper cup 12 off the roller and dropping the paper cup 12 into a collecting container below so that the reduced paper cup 12 adheres to the roller and does not move upward again.

The work procedure of the volume reduction process is almost the same as that of the first embodiment, and the description is omitted. However, in the paper cup volume reduction device of the second embodiment, the second long diameter portion is used. Since the concave portion 79 is formed large in 78, the inserted paper cup 12 securely fits into the concave portion 79, and then passes between both rollers 71 and 75 as the rollers 71 and 75 rotate, thereby securely reducing the volume. Is done. However, in order to secure the large-diameter concave portion 79, the roller diameter becomes larger than that of the first embodiment, and therefore, the outer shape as a volume reducing machine also becomes large.

Although the case where the paper cup volume reducing machine is incorporated in the paper cup collecting apparatus has been described above, the paper cup volume reducing machine according to the present invention can be used alone or when the paper cup volume reducing machine is used alone. It is needless to say that the same effect can be obtained even when it is not used.

[0043]

As described above, in the paper cup volume reducing machine according to the first aspect, the frame, the pair of first and second rollers rotatably mounted on the frame in parallel with each other, and the two rollers In a paper cup volume reducing machine that includes a drive unit that rotationally drives rollers in opposite directions, and reduces the volume by passing a paper cup between the two rotating rollers, the first and second rollers include: A roller shaft rotatably attached to the frame, a plurality of ring-shaped short-diameter portions integrally formed on the outer periphery of the roller shaft and arranged at predetermined intervals in the axial direction, and the roller shaft, respectively. A concave portion formed to be integral with the outer periphery of the short diameter portion and disposed between the short diameter portions, the concave portion for drawing the paper cup into the outer periphery, and the paper cup pulled into the concave portion. Low Comprising a plurality of long diameter portion and a convex portion circumferentially toothed obtained by forming alternating for pushing between,
The axial center position of the minor diameter portion of the first roller and the second roller
The two rollers are arranged so that the axial center positions of the long diameter portions of the rollers coincide with each other, so that the concave and convex portions formed on the outer circumference of the long diameter portions of both rollers cooperate to move the paper cup between the two rollers. And a small and efficient volume reduction machine can be realized.

Further, in the paper cup volume reducing machine according to the second aspect, the diameters of the short diameter portion and the long diameter portion are the same between the two rollers, and the center distance between the two rollers is D,
When the diameter of the short diameter part is S and the maximum diameter of the long diameter part is L,
Since the relationship of S <D <L is established, a reliable volume reduction effect can be obtained.

In the paper cup volume reducing machine according to the third aspect, the axial gap between the major axis of the first roller and the major axis of the second roller is set to 1 to 5 mm. The required dimensional accuracy of each part is reduced,
External dimensions are kept within a certain range, and a compact and inexpensive volume reducer is realized.

Further, in the paper cup volume reducing machine according to the fourth aspect, the circumferential position of the concave portion of each long diameter portion is sequentially set by a predetermined angle in a direction in which the two rollers become opposite to each other as they advance in the axial direction. Since the paper cup is shifted, the paper cup is more reliably and quickly drawn into between the two rollers, and the volume reduction processing efficiency is improved.

In the paper cup volume reducing machine according to the fifth aspect, the paper cup is rotatably mounted on a shaft parallel to the two rollers, and swings between a position near the intersection of the two rollers and a separation position. Since the paper cup is moved and presses the paper cup to guide the paper cup between the rollers, the paper cup is securely pushed between the rollers, so that the volume reduction processing efficiency is further improved.

Further, in the paper cup volume reducing machine according to the sixth aspect, the drive source for swinging the pressing plate is shared by the drive unit for rotating and driving both rollers. The swing driving of the pressing plate can be realized at low cost without providing a simple driving source.

According to a seventh aspect of the present invention, there is provided a paper cup volume reducing machine, wherein a frame, a pair of first and second rollers rotatably mounted on the frame in parallel with each other, and the two rollers are rotated in opposite directions. In a paper cup volume reducing device that includes a driving unit that drives the paper cup and reduces the volume by passing the paper cup between the rotating rollers, the first roller is rotatably attached to the frame. A first roller shaft, and a plurality of ring-shaped first short diameter portions and a first long diameter portion which are integrally formed on the outer periphery of the first roller shaft and are alternately arranged in the axial direction. ,
The second roller is a second roller shaft rotatably mounted on the frame. The second roller is integrally formed on the outer periphery of the second roller shaft, and the axial center position of the second roller shaft is the axis of the first long diameter portion. A plurality of ring-shaped second short diameter portions disposed so as to coincide with the center position in the direction and the outer periphery of the second roller shaft, and the center position in the axial direction is the first position. A plurality of semi-circular recesses are provided between the second minor diameter portions so as to coincide with the axial center positions of the minor diameter portions, and have substantially semicircular recesses for fitting the paper cups around the second minor diameter portions. Since the sheet has the second long diameter portion, the concave portion of the second roller surely catches the paper cup and draws the paper cup between both rollers, so that the volume reduction processing can be surely performed.

[Brief description of the drawings]

FIG. 1 is a diagram showing a paper cup collection device accommodating a paper cup volume reducing machine according to Embodiment 1 of the present invention.

FIG. 2 is a diagram for explaining a flow of a paper cup inserted from a paper cup input port of the paper cup collecting device.

FIG. 3 is a plan view showing the structure of the volume reducer 4;

FIG. 4 is an enlarged view showing a single body of a long diameter portion 50 of the volume reduction device 4;

FIG. 5 is a view showing a structure of a pressing plate 43 and a driving mechanism thereof.

FIG. 6 is a diagram showing a structure of a volume reducer according to Embodiment 2 of the present invention.

[Explanation of symbols]

4 volume reduction machine, 12 paper cups, 40, 70 frames,
41, 71 first roller, 42, 75 second roller, 43 pressing plate, 45, 72 first roller shaft, 4
6,73 1st minor diameter portion, 47,74 1st major diameter portion,
48, 76 second roller shaft, 49, 77 second short diameter portion, 50, 78 second long diameter portion, 51 electric motor, 53,
79 recess, 54-57 protrusion.

Continued on the front page (51) Int.Cl. ⁶ Identification code FI B09B 3/00 B09B 3/00 301Q

Claims (7)

[Claims] 1. A paper cup comprising: a frame; a pair of first and second rollers rotatably mounted on the frame so as to be parallel to each other; and a drive unit for rotating the two rollers in opposite directions. In the paper cup volume reducing machine in which the volume is reduced by passing between the rotating rollers, the first and second rollers are respectively a roller shaft rotatably mounted on the frame, and a roller shaft of the roller shaft. A plurality of ring-shaped short-diameter portions formed integrally with the outer periphery and disposed at predetermined intervals in the axial direction, and formed integrally with the outer circumference of the roller shaft, and each of the above-described thinner portions having a thickness smaller than the thickness of the short-diameter portion. A concave portion is provided between the short diameter portions, and a concave portion for drawing the paper cup into the outer periphery thereof and a convex portion for pressing the paper cup drawn into the concave portion between the rollers are alternately formed in the circumferential direction. Become Comprising a plurality of long diameter portion of the car-shaped, the axial direction of the short diameter portion of the first roller center position and the second
A paper cup volume reducing machine characterized in that the two rollers are arranged so that the axial center position of the major diameter portion of the roller is aligned. 2. The diameters of the short diameter portion and the long diameter portion are the same between both rollers, the distance between the centers of the two rollers is D, the diameter of the short diameter portion is S, and the maximum diameter of the long diameter portion is L. 2. The paper cup volume reducing machine according to claim 1, wherein a relationship of S <D <L is satisfied. 3. The paper cup volume reducing machine according to claim 2, wherein an axial gap between the major axis of the first roller and the major axis of the second roller is set to 1 to 5 mm. 4. The method according to claim 1, wherein the circumferential position of the concave portion of each major diameter portion is sequentially shifted by a predetermined angle in a direction opposite to each other by both rollers as the axial direction advances. Paper cup volume reduction machine described in Crab. 5. A roller which is rotatably mounted on a shaft parallel to the two rollers, swings between a position near a crossing portion of the two rollers and a separated position, and presses a paper cup to move between the two rollers. 5. The paper cup volume reducing device according to claim 4, further comprising a guiding pressing plate. 6. The paper cup volume reducing machine according to claim 5, wherein a drive source for swinging the pressing plate is shared by a drive unit for rotating and driving both rollers. 7. A paper cup, comprising: a frame; a pair of first and second rollers rotatably mounted on the frame so as to be parallel to each other; and a drive unit for rotating the two rollers in opposite directions. In a paper cup volume reducing machine in which a volume is reduced by passing between two rotating rollers, the first roller includes a first roller shaft rotatably mounted on the frame, and the first roller. A plurality of ring-shaped first short diameter portions and a first long diameter portion each formed integrally with the outer periphery of the shaft and alternately arranged in the axial direction, and the second roller is mounted on the frame. A second roller shaft rotatably mounted, integrally formed on the outer periphery of the second roller shaft, and disposed so that its axial center position coincides with the axial center position of the first major diameter portion. Multiple pieces of phosphorus The second minor diameter portion and the second roller shaft are formed integrally with the outer periphery of the second roller shaft, and each of the first minor diameter portions is aligned with the axial central position of the first minor diameter portion. A plurality of second long diameter portions provided between the two short diameter portions and having a substantially semicircular concave portion for fitting the paper cup on the outer periphery thereof; Cup volume reduction machine.