JP2003172457A - Bearing sealing device of seaming spindle of seaming machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent degradation of a seal member, and to improve the wear resistance in a bearing of a seaming spindle of a can seaming machine. <P>SOLUTION: In a sealing device of the bearing (6) of the seaming spindle, a ring-shaped protective member (30) formed of a chemical-resistant, heat- resistant and wear-resistant resin is disposed on the atmosphere side of an oil seal (8), and a ceramic thermal-sprayed film (31) using a ceramic mainly consisting of metal oxide is generated on a sliding surface which slides with the seal member in a slidable contact manner. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bearing sealing device for a seaming spindle of a can winding machine for canning beer, juice and the like into aluminum cans, steel cans and the like. . In a can winding machine, a seaming head 1 revolving around a left axis (not shown) as shown in FIG. 2 has a plurality of seaming spindles 3, 3,.・
Are supported by bearings 6 at equal intervals on the circumference so as to rotate (rotate), and a lubricating oil tank 2 is provided above the lubricating oil tank 2. The body 11 of the can 10 to be fastened is placed on a lower lifter 13, and the can lid 14 wound on the body 11 of the can 10 is provided with a seaming chuck 15 of the seaming spindle 3 and a seam chuck 15. The knockout rod 17 which moves up and down in the guide ring 16 in the ming spindle 3 is pressed against the body 11 of the can 10 with the pad 18 at the lower end, and the first,
The second seaming rolls 19, 19 are supported by seaming levers 21, 21 supported at the lower end of a seaming shank shaft (not shown) so as to approach the body 11 of the can 10 and revolve and rotate freely. . In the drawing, reference numeral 22 denotes a clamp nut, 23 denotes a spacer, and 24 denotes a driving gear of the seaming spindle 3. A can 10 on which a can lid 14 placed on a lifter 13 is placed at the time of winding rotation.
Rises while being sandwiched between the lifter 13 and the pad 18, is chucked by the seaming chuck 15, and
4 and the body 11 of the can 10 are pressed against each other. Next, the first and second seaming rolls 19, 19 are sequentially pressed and fastened. Since these configurations and operations are not related to the gist of the present invention, detailed description will be omitted. In the conventional sealing device for the bearing 6 of the seaming spindle 3, as shown in FIG. 2, a wear ring 4 is fitted to the outer periphery of the sliding portion of each seaming spindle 3 fitted to the inner ring of the bearing 6. A wear-resistant chrome-plated film 5 is formed on the outer peripheral sliding surface, and the oil seal 8 in the lower ring 7 fixed to the fixed outer ring of the bearing 6 comes into contact with the surface, and the lower ring 7 A labyrinth seal 9 is formed. [0005] However, in such a sealing device, foreign matter, abrasion powder and the like in the lubricating oil, which cannot be removed by a filter of an oil supply device (not shown), enter the sliding portion and are sealed. The chrome-plated film 5 on the sliding surface of the wear ring 4 that slides into the member and damages the chrome plated film 5 to cause abnormal wear. From the side, that is, the air side, into the seal lip, infiltrating the seal member and prematurely deteriorating, thereby significantly reducing the seal function, causing leakage of lubricating oil in the bearing 6 and contaminating the tightened products and machines. , Is a hygiene problem. The present invention solves such a drawback, and prevents the seal member from deteriorating early due to infiltration from the atmosphere side, and improves the wear resistance of the sliding surface of a shaft that slides with the seal member, thereby achieving a sealing function. Is to be prevented from decreasing. [0006] A first aspect of the present invention is a sealing device for a bearing (6) of a seaming spindle (3) of a can winding machine. A ring-shaped protective member (30) made of a resin having chemical resistance, heat resistance, and abrasion resistance is provided, and a ceramic mainly composed of a metal oxide is formed on a sliding surface that slides with the seal member. It is characterized in that the ceramic sprayed coating (31) used is formed and brought into sliding contact. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to FIG. Seaming spindle 3,3
In the sealing device that seals the oil that lubricates the bearing 6 that supports..., The seal member of the oil seal 8 in the lower ring 7 fixed to the outer ring on the fixed side of the bearing 6 has a lower position, that is, the atmosphere side. For example, a ring-shaped protective member 30 made of a resin having chemical resistance, heat resistance, and abrasion resistance represented by, for example, tetrafluoroethylene resin, is disposed integrally with the seal member,
The wear ring 4 fitted to the outer periphery of the sliding portion of each of the seaming spindles 3, 3,... Then, a ceramic sprayed coating 31 using a ceramic mainly containing a metal oxide such as titanium oxide is formed and brought into sliding contact. Even if the protection member 30 is provided separately from the seal member and is disposed adjacent to the atmosphere side of the oil seal 8,
The same effect can be obtained, but it is desirable to dispose the sealing device integrally with the sealing member in order to reduce the size of the sealing device so that the mating shaft does not need to be extended. Next, the operation of this device will be described. The lubricating oil is supplied to the upper part of the bearing 6 from the tank 2, and after lubricating the bearing 6, accumulates on the oil seal 8 from the lower part. on the other hand,
Washing and sterilization is performed below the lower ring 7.
At this time, by disposing the protection member 30 for protecting the seal member integrally with the seal member on the atmosphere side of the oil seal 8 that seals the lubricating oil, a chemical solution or steam used for cleaning and sterilizing the machine is provided. Does not penetrate into the seal lip portion, prevents early deterioration caused by infiltration into the seal member, greatly improves the durability life thereof,
That is, since the wear resistance of the sliding surface of the shaft that slides with the seal member is improved by the ceramic sprayed coating 31, foreign matter, abrasion powder, etc. in the lubricating oil that could not be removed by the filter of the oil supply device (not shown). Does not abnormally wear the sliding surface because it has sufficient wear resistance even if it slides into the sliding part and rotates and slides into the seal member.
Similarly, the durable life is dramatically improved, and the two are brought into sliding contact with each other, whereby the oil leakage preventing function can be maintained for a long time. As described above, according to the first aspect of the present invention, the ring-shaped protection member 30 made of a resin having chemical resistance, heat resistance and abrasion resistance is provided on the air side of the oil seal 8. The ceramic sprayed coating 31 made of ceramics containing metal oxide as a main component is formed on the sliding surface that slides with the seal member and is brought into sliding contact with the sliding surface. Prevents premature deterioration caused by chemicals or steam used to infiltrate the seal member, dramatically improves its durability, and removes foreign matter and abrasion powder in the lubricating oil that have not been removed by the filter of the lubrication system. Even if it slides in rotation while biting into the seal member, it does not abnormally wear the sliding surface,
Similarly, the durable life is dramatically improved, and the two are brought into sliding contact with each other, whereby the oil leakage preventing function can be maintained for a long time.

[Brief description of the drawings] FIG. 1 is a longitudinal sectional view of an embodiment of the present invention. FIG. 2 is a longitudinal sectional view of a conventional device. [Explanation of symbols] 3 Seaming spindle 6 Bearing 8 Oil seal 30 Protective member 31 Ceramic spray coating

Claims (1)

Claims: 1. Seaming spindle (3) of a can winding machine
In the sealing device for the bearing (6), the oil seal (8)
A ring-shaped protective member (30) made of a resin having chemical resistance, heat resistance and abrasion resistance is disposed on the atmosphere side, and a metal oxide is a main component on a sliding surface that slides with the seal member. A bearing sealing device for a seaming spindle of a can winding machine, characterized in that a ceramic sprayed film (31) using a ceramic to be used is formed and brought into sliding contact.