JPH0159221B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for coating glass containers with scratches.

Glass containers such as beer bottles that are collected and used repeatedly rub against each other during the bottling and distribution processes, causing scratches (which usually appear as whitening on beer bottles) on the top and bottom surfaces of the container bodies. As a result, the appearance of glass containers deteriorates as the number of times they are collected and used increases, reducing the commercial value of bottled beverages. In order to prevent such a decline in commercial value, the applicant first proposed an invention in which an emulsified dispersion containing dimethyl silicone as a main component is coated on the surface of a glass container to cover the scratches. (Japanese Patent Publication No. 179053/1983). However, in this method, the emulsified dispersion is applied to the scratched areas of the bottles using a spray gun or by dipping, making it difficult to quickly and efficiently apply the coating to a large number of scratched bottles. There was a drawback.

This invention was made in view of the above-mentioned conventional situation, and its purpose is to increase work efficiency by quickly and efficiently coating a large number of glass containers with scratches. To provide a coating device which is simple in structure and can be installed at low cost even in a narrow space.

In order to achieve the above object, the coating device according to the present invention coats glass containers on one side of a conveyor that stands up and transfers glass containers in a row, in the same direction as the moving direction of the conveyor and faster than the moving speed of the conveyor. A pair of upper and lower coating belts are disposed that move at a high speed and contact the upper and lower parts of the body of the container to apply the coating liquid, and on the other side of the conveyor, the glass containers are placed between the upper and lower parts of the body of the container. A pressing member is disposed to be pressed against the coating belt, and a nozzle is provided in a portion of the upper and lower coating belts that does not contact the glass container and is in sliding contact with the surface of the belt facing the direction of movement of the belt. A coating liquid supply member is provided to supply a coating liquid linearly to the surface of the coating belt when the coating belt is moved, and is pressed from the back side of the coating belt to the portions of the upper and lower coating belts that do not come into contact with the glass container. The present invention is characterized in that a rotating body that applies tension to the coating belt is provided so that its position can be adjusted in a direction intersecting the moving direction of the coating belt.

Examples of the present invention will be described below.

1 and 2 show the first embodiment, in which 1 is a slat conveyor that horizontally transports beer bottles 2, which have been washed and dried on the upper surface and stood up in a row, in the direction of the arrow; On one side, there is a coating belt 6, which is wrapped around the driving pulleys 3, 3', driven pulleys 4, 4', and tension pulleys 5, 5', and whose surface is lined with sponge.
6' are arranged above and below the body 2a of the bottle 2. Coating belts 6 and 6 are conveyor 1
It is adapted to move in contact with the surface of the body 2a of the bottle 2 in the same direction as the moving direction and at a speed faster than the moving speed of the conveyor 1. The driving pulleys 3, 3' and the driven pulleys 4, 4' can be moved up and down by keyways and set bolts on rotary shafts 10, 11 vertically arranged on the machine frame 7 via bearing members 8, 9, respectively. installed on. Drive side rotating shaft 1
A pulley 13 is attached to the lower part of 0. 1
A drive motor 5 has a pulley 17 attached to the rotating shaft of the motor 15, and a V-belt 18 is wound around the pulley 17 and the pulley 13. The tension pulleys 5, 5' are vertically movably attached to a rotating shaft 20 by means of a keyway and a set bolt. A boss portion 21 is provided at an axially intermediate portion of the rotating shaft 20.
The tension lever consists of a horizontal piece 22a and a vertical piece 22b rising from one end of the horizontal piece 22a, and one end of the horizontal piece 22a is pivotally supported on the upper surface of the machine frame 7 by a pivot pin 23. The upper ends of the vertical pieces 22b of 22 are fixed. A fixing plate 25 having an arcuate groove 24 along an arcuate locus centered on the pivot pin 23 is attached to the upper surface of the machine frame 7 at the other end of the horizontal piece 22a. A tension member 26 provided on the horizontal piece 22a is engaged in a tensionable manner. Reference numeral 28 denotes a retaining plate provided on the back of the coating belts 6, 6' that come into contact with the bottle 2, and whose surface on the coating belt side is lined with nylon to prevent the belts 6, 6' from being displaced inward due to contact with the bottle 2. It's getting old.

Further, on the surfaces of the coating belts 6, 6' on the driven pulleys 4, 4', there are injection needles 30, 30' with hole diameters of about 1.2 to 0.65 mm (two on the upper coating belt 6, two on the lower coating belt 6). ’),
The nozzle is disposed facing the direction of movement of the belts 6, 6', with the tip nozzle in sliding contact with the surface of the belt.
At the proximal ends of the injection needles 30, 30', there is a liquid feeding pipe 3 attached to a support plate 31 by U-bolts or the like.
2, 32' are connected at one end, and the pipes 32, 3
The other end of 2' is the cradle 3 of the support column 33 erected on the machine frame 7.
Coating liquid tank 35, 3 placed on 4
5'. The liquid sending pipes 32, 32' are respectively provided with electromagnetic valves 37, 37' which operate in conjunction with the drive of the conveyor 1 from the tank side, and needle valves 38, 38' for adjusting the liquid amount. tank 35,
The coating liquid in 35' is preferably an emulsified dispersion containing dimethyl silicone as a main dispersion component, such as fatty acid esters of sorbitan or monoesters of glycerin. 39 is a scraper for scraping off the remaining amount of coating liquid adhering to the surface of the coating belts 6, 6', and the scraped liquid is stored in a saucer (not shown). .

On the other hand, on the other side of the conveyor 1 facing the coating belts 6, 6', there are pressing plates 40, 4 for pressing the bottles 2 against the coating belts 6, 6'.
0' is placed. The surfaces of the pressing plates 40, 40' are lined with sponge and felt adhered to the bottle 2 side in this order. A pair of screw rods 43, 43' are provided horizontally protruding from the rear surfaces of the press plates 40, 40', and these rods 43, 43' are inserted into elongated holes in the upright plate 46 provided on the underframe 45. , and can be moved up and down by nuts 48, 48', 49, 49',
and is tensioned so that it can be moved back and forth. Underframe 4
A leg stand 50 is attached to the rear surface of the leg stand 5.
The underframe 45 is fixed to the machine frame 7 via 0.

Next, the operation of the above embodiment will be explained.

When the motor 15 is driven, the rotating shaft 10 is rotated, and along with this, the driving pulleys 3, 3', and 3' on the shaft are rotated.
Coating belts 6, 6' wound around driven pulleys 4, 4' and tension pulleys 5, 5' on rotating shaft 11 rotate in the direction of the arrow at a faster speed than conveyor 1.

In the above, the bottles 2, which are washed with water on the conveyor 1, dried, and sent standing up in one line, are sequentially passed through the coating belts 6, 6', the pressing plate 40,
The belts 6, 6' and the pressing plates 40, 40' are conveyed by the coating belts 6, 6', which are faster than the conveyor 1, while conveying the belts 6, 6' and the pressing plates 40, 40'. At this time, the surfaces of the coating belts 6, 6' are covered with the injection needles 30,
Since the coating liquid is supplied linearly from the tip nozzle 30' by natural dripping, the coating liquid supplied linearly is instantly poured into the bottle by contact with the surface of the coating belts 6, 6'. 2
It is diffused and applied to the surface of the body 2a. During this application, the bottle 2 rotates several times, so its body 2a
The surface evenly contacts the coating belts 6, 6' over the entire circumference, and the belts 6, 6'
6' is always secured to the body 2a of the bottle 2 by the holding plate 28.
A pressing plate 4 that is held so as to be in contact with the surface and that is
0,40' coats the bottle 2 with the belt 6,
6', the application is carried out reliably and smoothly. Furthermore, since the pressing plates 40, 40' are disposed at positions facing the coating belts 6, 6', the coated surface of the body 2a of the bottle 2 supplied by the coating belts 6, 6' is , excess liquid is wiped off to form a uniform and smooth coated film.

Then, the bottle 2 coated with the coating liquid and covered with scratches is further transported by the conveyor 1, while the coating belt 6,
The remaining amount of the coating liquid supplied to the surface of the injection needle 6' is scraped off by the scraper 39, and the coating belts 6, 6' whose surfaces have been scraped off and cleaned in this way are further moved and are again attached to the injection needle. 30,
The coating liquid is supplied from 30'. While repeating the above-described operations, a coating liquid is continuously applied to the surfaces of the bodies 2a of a large number of bottles 2 being conveyed on the conveyor 1, thereby shielding scratches.

In the above embodiment, the upper coating belt 6
Although two injection needles 30 are shown in the figure, the number of needles can be arbitrarily determined in consideration of the hole diameter, the width of the belt 6, and the like. Also, instead of the needle valves 38, 38', a needle 3 having a plurality of hole diameters is used.
The detailed design can be changed as appropriate, such as using 0.0, 30', using only one tank 35, 35', or arbitrarily changing the concentration of the coating liquid in the tanks 35, 35'.

3 and 4 show a second embodiment, in which push belts 60, 6 are replaced with push plates 40, 40'.
The second embodiment differs from the first embodiment in that 0' is provided, and the other parts are almost the same as the first embodiment. Therefore, the same parts will be given the same reference numerals and the explanation will be omitted, and the different parts will be mainly explained.

The pressing belts 60, 60' are wound around driving pulleys 61, 61' and driven pulleys 62, 62' provided on the other side of the conveyor 1 at positions facing the driving pulleys 3, 3' and driven pulleys 4, 4'. The surface is lined with sponge. This belt 60,
60' moves the bottles 2 in the same direction as the moving direction of the conveyor 1 and at a speed slower than the moving speed of the conveyor 1.
It is adapted to move in contact with the body portion 2a of the body. Note that the moving direction of the belts 60, 60' does not necessarily have to be the same direction as the conveyor 1, but may be the opposite direction. Drive pulleys 61, 61' and driven pulley 6
2 and 62' are bearing members 64 and 64, respectively, attached to the underframe 45.
A rotation shaft 65 disposed vertically via 64',
66 by a keyway and a set bolt so that it can move up and down. A pulley 67 is attached to the lower part of the rotating shaft 65 on the drive side, and a V-belt 70 is wound around this pulley 67 and a small diameter pulley 69 that is integrally provided at the upper part of the pulley 17 of the drive motor 15. Therefore, when the motor 15 is driven, the coating belts 6, 6' and the pressing belt 6
0 and 60' can be moved simultaneously at different speeds. 72 is the pressing belt 6
This is a holding plate for 0.0, 60', and its structure is similar to the holding plate 28 of the first embodiment.

Since the present invention has the above-described structure, it is possible to quickly and efficiently apply coating liquid to a large number of glass containers with scratches, and it is possible to reliably remove scratches from glass containers. Since it can be shielded and does not require any manpower for the coating work, work efficiency can be significantly improved compared to conventional methods. In addition, the coating belt that applies the coating liquid is placed on the body of the glass container.
Since it is composed of a pair of upper and lower coating belts that contact the lower part, for example, a relatively hydrophilic coating liquid is applied from the upper coating belt to the upper part of the body of the glass container to prevent the glass container from slipping. In order to reduce the risk, it is also possible to apply a relatively hydrophobic coating liquid to the lower part of the torso from the lower coating belt so that the coating is evenly applied to the lower part. Further, in the portions of the upper and lower coating belts that do not come into contact with the glass container, a rotating body that presses against the back surface of the coating belt to apply tension to the coating belt can be positioned in a direction perpendicular to the moving direction of the coating belt. Since the upper and lower coating belts are provided with a constant tension so that the parts that come into contact with the glass container do not bend, it is possible to maintain high-precision coating work even after long-term use. It has excellent effects.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view showing a first embodiment of the present invention, Fig. 2 is a schematic longitudinal sectional side view of the same as above, Fig. 3 is a schematic plan view showing a second embodiment of the invention, and Fig. 4 is a schematic longitudinal sectional view of the same as above. FIG. 1...Slat conveyor, 2...Beer bottle,
2a... body, 3, 3'... drive pulley, 4,
4'... Driven pulley, 6, 6'... Coating belt, 7... Machine frame, 10, 11 rotating shaft, 13, 1
7... Pulley, 15... Drive motor, 30,3
0'...Syringe needle, 32,32'...Liquid sending pipe, 3
3...Strut, 35,35'...Tank, 37,3
7'... Solenoid valve, 38, 38'... Needle valve, 3
9...Scraper, 40, 40'...Press plate, 6
2,62'...Press belt.

Claims (1)

[Claims] 1. To one side of a conveyor that transports glass containers standing up in a line, moving in the same direction as the moving direction of this conveyor and at a speed faster than the moving speed of the conveyor, the upper and lower parts of the bodies of the containers are A pair of upper and lower coating belts are disposed in contact with the conveyor to apply the coating liquid, and a pressing member is disposed on the other side of the conveyor to press the glass container against the upper and lower coating belts, The portions of the upper and lower coating belts that do not come into contact with the glass container are provided with nozzles that face the direction of movement of the belt and slide into contact with the surface of the belt, and from these nozzles, coating liquid is applied linearly onto the surface of the coating belt as it moves. A coating liquid supplying member is provided for supplying a coating liquid, and a rotating body that applies pressure to the coating belt from the back side of the coating belt to apply tension to the portions of the upper and lower coating belts that do not come into contact with the glass container is installed in the direction of movement of the coating belt. A device for coating scratches on a glass container, characterized in that the device is provided so that its position can be adjusted in a direction that intersects with that of the glass container.