KR20020084038A - A apparatus for manufacturing a paper cup - Google Patents

Abstract

PURPOSE: A device for manufacturing paper cups is provided to suppress the production of defective paper cups by detecting the deformation of the paper cups and the existence of foreign matters on the paper cups and to improve productivity by automatically detecting the defects. CONSTITUTION: A device for manufacturing paper cups comprises paper cup manufacturing units(30,40,50) for completely forming paper cups(10), an alignment unit(100) for aligning the completed paper cups, an inverting unit(200) for making the openings of the paper cups face upward, a conveyor(220) for horizontally transferring the inverted paper cups, a detecting unit for detecting defective paper cups, a collecting unit for collecting defective cups(10a), and a packing unit(421) for packing good-quality paper cups(10b). The detecting unit comprises an illuminating unit(330) for irradiating a light from the upper portion of the paper cups, a camera(320) for picking up the image of the paper cup, a monitor(310) for displaying the image picked by the camera, and a microprocessor for generating a defective cup discriminating signal.

Description

A apparatus for manufacturing a paper cup

The present invention relates to a paper cup manufacturing apparatus, and more particularly, to a paper cup manufacturing apparatus for recovering a defective paper cup by detecting the presence or absence of deformation of its appearance from paper cups produced continuously.

In general, the paper cup 10 is made of a truncated conical cylindrical side 11, as shown in Figure 1, and the base 12 is attached to the lower end of the small diameter portion of the side (11).

In the manufacturing method of the paper cup 10 as shown in FIG. 4, first, the side paper 11 cut in a trapezoidal shape as shown in FIG. 2A is supplied to the side paper forming unit 20 as shown in FIG. As shown in Fig. 11 of the truncated cone cylinder.

The side forming unit 20 is formed of a truncated cone shaped molding 22, a pair of rotating plates 23, 24 and a heater block 21 rotatably coupled to each other.

Side 11 supplied between the molding mold 22 and the rotating plate 23, 24 is in close contact with both ends to overlap the outer peripheral surface of the molding mold 22 by the rotating plate 23, 24, the overlapping portion The heater block 21 is lowered to form a truncated conical cylindrical side 11 as shown in FIG.

After the bottom support 12 (not shown) wound in the form of a roll punched cutting bottom 12 as shown in Figure 1 as shown in Figure 1 in the heat pressure bonding to the bottom of the side edge 11 of the truncated cone cylindrical, the upper curry ( The paper cup 10 is completed by curling).

The paper cup 10 manufactured as described above detects and recovers defective paper cups and stacks and ships only good quality paper cups by a predetermined amount.

An example of a defective paper cup recovery and recovery apparatus employed in such a paper cup manufacturing apparatus is disclosed in Korean Utility Model Registration No. 95-7085. The disclosed technique allows only a good paper cup with a base to be produced by having a bad cup without a base material collected in a bad cup collecting tube.

By the way, the paper cup manufacturing apparatus as described above, even if there is a base, it is impossible to separate them if there are scratches or contaminants on the side or base itself.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a paper cup manufacturing apparatus capable of detecting the presence of contaminants, scratches or deformation on the base or side.

Another object of the present invention is to provide a paper cup manufacturing apparatus capable of recovering a defective paper cup detected from the manufactured paper cup.

1 is a cross-sectional view showing a conventional paper cup,

Figure 2a is a plan view showing the side of the paper cup,

Figure 2b is a plan view showing the base of the paper cup,

3 is a schematic view showing a molding unit for molding the side of the paper cup;

4 is a perspective view showing a state in which the side of the paper cup is molded,

5 is a schematic view showing a manufacturing apparatus of the present invention;

6 is a main view of the manufacturing apparatus of the present invention,

7a and 7b is an operation of the buffer unit employed in the present invention,

8 is a schematic plan view showing a paper cup piece supply unit employed in the device of the present invention;

9 is a perspective view illustrating main parts of the paper cup single feed portion employed in the present invention device;

10 is a perspective view showing a reverse unit,

11 is a schematic cross-sectional view of the adsorption roller,

12 is a schematic cross-sectional view showing a conveying conveyor,

13 is a schematic diagram showing a detection unit for detecting a defective paper cup;

14 is a perspective view showing a defective paper cup detection unit and recovery unit;

15 is a schematic diagram illustrating a monitor in which an image of a paper cup is displayed.

* Explanation of symbols for main parts of the drawings

10 ... paper cups 31,41,51 ... supply pipe

Alignment supply unit 110 ... 1st buffer part

120 second buffer section 130 collecting section

140 Supply unit 200 Inverting unit

210 ... Suction Roller 211 ... Suction Ball

220.Conveyor conveyor 230 ... Aspirator

310 Monitor 320 Camera

330 Lighting member 410 Recovery pipe

415 Blowing nozzle 420 Discharge pipe

In the present invention to achieve the above object is a paper cup manufacturing apparatus having a detection means for detecting a defective paper cup from the paper cup to which the side and the base are bonded and conveyed,

The detecting means includes illuminating means for irradiating a light source to the paper cup; A camera for photographing the paper cup irradiated with the light source; A monitor displaying the captured image; And a microprocessor including a comparison unit for comparing an external reference coordinate value of a set paper cup with a coordinate value of the photographed image, and a signal generator for generating a signal when the comparison value is out of an error range. do.

The microprocessor may further include a contrast comparison unit for detecting a contrast difference between the paper cup and the foreign matter from the photographed image. In this case, it is possible to detect a deformation of the appearance and a defect such as foreign matter or scratches.

The lighting means is a ring-shaped lighting member formed in an annular shape and provided with a plurality of light emitting elements on an inner circumferential surface thereof.

In addition, the paper cup manufacturing apparatus of the present invention further includes a recovery means for recovering the detected paper cups according to the signal of the signal generator.

The recovery means is a hollow recovery pipe provided on one side of the conveying path of the paper cup, and blows the paper cup so that the defective paper cup is forced away from the conveying path to the recovery pipe side and provided on the other side of the conveying path. A blowing nozzle is provided.

Inside the recovery pipe is further provided with a recovery nozzle for forced air blowing in the recovery direction of the paper cup.

According to the features of the present invention, the present invention manufacturing apparatus can display a paper cup as an image to detect the quality of the paper cup by detecting the deformation of the appearance such as scratches and the presence of foreign matter such as blemishes therefrom.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Paper cup manufactured through the paper cup manufacturing unit of the paper cup manufacturing apparatus of the embodiment of the present invention, as shown in Figures 1 and 2, the side 11 and the bottom 12 is attached to each other and the curing portion on the top of the side 11 (11a) is formed.

Referring to FIG. 5 schematically showing the manufacturing apparatus of the present invention, which aligns the finished paper cups 10 and the paper cup manufacturing units 30, 40 and 50 for completing the paper cup 10 as described above. Alignment supply unit 100, the inversion unit 200 for inverting the opening portion of the paper cups 10 supplied from the alignment supply unit 100 to the upper side, the conveying conveyor for horizontally moving the inverted paper cups 10 220, detection means for detecting the defective paper cup 10, recovery means for recovering the detected defective paper cup 10a, and a packaging unit 421 for discharging and packaging the high quality paper cup 10b. .

Each paper cup manufacturing unit 30, 40, 50 supplies a cut side 11 to form a cylindrical side 11 as shown in FIG. 4, and the small diameter portion of the cylindrical side 11. Attached to the bottom 12 as shown in Figure 2b at the bottom, has a conventional paper cup manufacturing configuration to complete the paper cup 10 by forming a curling portion (11a; curling) on the upper end of the large diameter portion of the side 11 .

The paper cups 10 manufactured from the respective paper cup manufacturing units 30, 40 and 50 are supplied to the alignment supply unit 100 through the respective supply pipes 31, 41 and 51. .

Referring to FIG. 6, the alignment supply unit 100 includes a first buffer unit 110, a second buffer unit 120, a collecting unit 130, and a supply unit 140.

Referring to FIG. 7A, the first buffer unit 110 includes three through holes through which the paper cups 10 falling from the respective supply pipes 31, 41, 51 pass through the first base 111. 111a is formed, and the movement stopper 113 and the cylinder 112 which open and close each through hole 111a are provided. This is because the moving stopper 113 blocks a portion of the through hole 111a to allow the paper cups 10 to be stacked, and then, when a predetermined amount or more of the paper cups 10 are stacked, as shown in FIG. The cylinders 112 are operated by the 115 so as to selectively open the through holes 111a so that the stacked paper cups 10 fall downward.

Since the second buffer part 120 has the same structure as the first buffer part 110, a detailed description thereof will be omitted, and the second buffer part 120 may be formed together with the first buffer part 110. The paper cup manufacturing unit 30, 40, 50 serves to buffer the paper cups 10 to be continuously supplied in large quantities in succession. Reference numeral 125 is a second sensor for detecting the height of the laminated paper cup 10, reference numeral 121 is a second base.

Further, reference numerals 114 and 124 are guide rods for guiding the paper cups falling through the respective through holes 111a.

The collection unit 130 is composed of a conical guide rod 131 and the collection tube 132 so that the paper cups 10 falling from the second buffer unit 120 can be gathered in one place. When the height of the paper cup 10 stacked on the collection pipe 132 is more than a certain height, by stopping the fall of the paper cup 10 from the second buffer unit 120 by the detection of the third sensor 133.

The supply unit 140 may be supplied downward from the paper cups 10 stacked on the collection pipe 132 one by one. 6, 8, and 9, the supply unit 140 may drop the paper cups 10 one by one through the through holes 149a of the third base 149 to the inversion unit 200. Supply.

Four spiral rollers 141-144 are rotatably provided at the edge of the through hole 149a of the third base 149, and these spiral rollers are connected to the driving pulley 146 by the timing belt 145. It is designed to rotate together in one direction. On the outer circumference of the spiral rollers 141-144, spiral portions 141a are formed to which the curling portion 11a of the paper cup 10 is coupled to drop downward from each of the stacked paper cups 10. Reference numerals 147 and 148 denote tension tension rollers for the timing belt 145.

6, 10, and 11, the inversion unit 200 sequentially positions the paper cups 10 falling backward from the supply part 140 in the forward direction. The inversion unit 200 is composed of a suction roller 210 and the inhaler 230.

The adsorption roller 210 is rotatably bearing is located directly under the guide tube 150 for guiding the paper cup 10 to be supplied individually from the supply unit 140. Reference numeral 240 is a drive belt for driving the adsorption roller 210. Intake holes 211 are formed on the outer circumferential surface of the adsorption roller 210 at predetermined intervals, and a space is formed inside. The inner space is connected to the intake passage 231 and the inhaler 230 through the rotation center of the adsorption roller 210. In addition, as shown in Figure 11, the inner space is provided with a blocking plate 234 so that the suction force acts on only a portion. The blocking plate 234 allows the suction force to work only from the top of the suction roller 210 to the bottom of the suction roller 210.

Therefore, after the paper cup 10 dropped from the guide tube 150 is adsorbed on the uppermost end of the adsorption roller 210, when the adsorption roller 210 is rotated, the paper cup 10 is rotated together with the paper cup 10 adsorbed on the outer circumferential surface and then blocked. At the lower end position deviating from the plate 234, the paper cup 10 is separated from the adsorption roller 210 and is adsorbed to the conveying conveyor 220 by the suction force from the conveying conveyor 220 which will be described later together with the free fall. At this time, the paper cup 10 is reversed from the inverted position to the normal position. Reference numeral 151 denotes an escape port through which the paper cup 10 is separated from the guide tube 150.

On the other hand, the transfer conveyor 220, as shown in Figures 6 and 10 to 12, the suction hole 221 is formed at a predetermined interval, the blocking duct 235 is provided inside the suction force only on the upper side Is supposed to work. The blocking duct 235 has a suction force of the inhaler 230 through the intake passage 232, the inhaler 230 is the suction roller 210 and the conveying conveyor through the intake passage (231, 232) The inside of the vacuum chamber 220 is vacuumed and the sucked air is exhausted through the exhaust passage 233.

The conveying conveyor 220 is provided with a guide bar 222 for guiding the paper cup 10 in the conveying direction so that the paper cup 10 is conveyed in a stable state.

On the other hand, the detection means for detecting the defective paper cup from the paper cup 10 to be conveyed along the conveying conveyor 220 is configured as follows.

5, 13 and 14, the lighting means 330 for irradiating a light source from the top of the paper cup 10, the camera 320 for shooting the paper cup 10 irradiated with the light source, and the shooting And a monitor 310 for displaying the captured image, and a microprocessor for generating a signal to sort out the defective paper cup from the image.

The lighting means is a ring-shaped lighting member 330 is formed in an annular shape, the light emitting element 331 is provided on the inner peripheral surface.

The microprocessor includes a first comparison unit which compares a set external reference coordinate value of the paper cup 10 with a coordinate value of the photographed image, and a signal generator that generates a signal when the comparison value is out of an error range. The microprocessor further includes a second comparison unit for detecting a contrast difference between the paper cup 10 and the foreign matter from the captured image. In this case, it is possible to detect a deformation of the appearance and a defect such as foreign matter or scratches.

Referring to FIG. 15, this is taken as an image on the monitor 310 by photographing the paper cup 10 from above, and on the monitor 310 the circumferential line b of the small diameter portion of the paper cup 10 and the curling portion 11a. The outline reference coordinates of the paper cup 10, such as the line thickness a, are set. A signal is generated from the microprocessor for the paper cup which is out of the error range compared with the reference coordinate value from the photographed image. For example, when an excessive deformation of the curling portion 11a occurs, a defect signal is generated from the signal generator by moving out of the error range, so that the defective paper cup 10a is subjected to the wind pressure generated from the blowing nozzle 415 described later. Is recovered.

In addition, by comparing the measured brightness of the photographed image and the standard brightness of the paper cup 10, a signal is generated to recover when it is out of the tolerance range. For example, when the absorption or foreign matter is present in the paper cup 10, the shadow is generated in the paper cup image reflected by the light source 331 to be irradiated. In this case, if it is out of the tolerance range compared to the standard brightness of the paper cup 10, it will be treated bad.

As shown in FIG. 14, the paper cup that is poorly processed is wind pressure generated from the blowing nozzle 415, and is turned to the recovery pipe 410. The defective paper cup 10a entering the recovery pipe 410 is transferred to the recovery unit 411 by the high pressure air discharged through the recovery nozzle 416.

On the other hand, the paper cup 10b determined to be of good quality is transferred to the packaging unit 421 along the discharge pipe 420 at the end of the conveying conveyor 220. The discharge pipe 420 is provided with a nozzle 422 for discharging high-pressure air, similar to the recovery pipe 410.

The same configuration as the first and second buffer units 110 and 120 shown in FIG. 7 may be employed at the recovery unit 411 and the packaging unit 421.

The manufacturing apparatus of the present invention can display a paper cup as an image to detect the quality of the paper cup by detecting the deformation of the appearance such as scratches and the presence of foreign matter such as blemishes therefrom.

It goes without saying that the present invention as described above is not limited to the above embodiments and can be practiced with many modifications without departing from the spirit and scope of the present application.

As described above, the present invention detects the deformation of the appearance or the presence of foreign matters from the continuously produced paper cups and recovers the defective paper cups, thereby improving the quality of the product.

In particular, it is advantageous to improve productivity by automatically detecting the captured image by comparing the set reference value.

Claims (6)

A paper cup manufacturing apparatus comprising: a detecting means for detecting a defective paper cup from a paper cup to which a side paper and a bottom paper are bonded and conveyed; The detecting means includes illuminating means for irradiating a light source to the paper cup; A camera for photographing the paper cup irradiated with the light source; A monitor displaying the captured image; And a microprocessor including a comparison unit for comparing an external reference coordinate value of a set paper cup with a coordinate value of the photographed image, and a signal generator for generating a signal when the comparison value is out of an error range. Paper cup making machine. The apparatus of claim 1, wherein the microprocessor further comprises a contrast comparison unit for detecting a contrast difference between the paper cup and the foreign matter from the photographed image. The paper cup manufacturing apparatus according to claim 1 or 2, wherein the lighting means is an illumination member formed in an annular shape and provided with a plurality of light emitting elements on an inner circumferential surface thereof. The paper cup manufacturing apparatus according to claim 1 or 2, further comprising recovery means for recovering the detected defective paper cup according to a signal of the signal generator. The method of claim 4, wherein the recovery means is a hollow recovery pipe provided on one side of the conveying path of the paper cup; And a blow nozzle provided on the other side of the conveying path to blow the paper cup so that the defective paper cup is separated from the conveying path and forcedly moved to the recovery pipe side. The paper cup manufacturing apparatus according to claim 5, further comprising a recovery nozzle for forcibly blowing in the recovery direction of the paper cup inside the recovery pipe.