JP2004135435A - Motor for food factory - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To obtain a motor for a food factory which can substantially completely prevent an oil from being leaked from a (geared) motor used in the factory with a simple structure. <P>SOLUTION: A V-ring (sealing mechanism) 50 is disposed in a gap S between an opposite load side cover 4 originally existing in the motor M1 and a fan 6. An oil mist floating in the air in the food factory is absorbed by the fan 6 to prevent the mist from being stored in the motor M1 from dripping. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a motor with a fan used in a food factory for processing and manufacturing, stirring, transporting, filling, packing, and inspecting food.
[0002]
[Prior art]
In a food factory, for example, a factory that manufactures bread, pasta, instant noodles, and the like, a so-called geared motor in which a motor and a speed reducer are integrated is widely used.
[0003]
It is efficient, for example, in a food factory transport system composed of a plurality of conveyors to operate only necessary parts only when necessary, and in this case, there was independence in driving each conveyor. This is because it is more advantageous. In addition, the arrangement of each conveyor is often changed in order to change the transport path. In this case, however, it is advantageous that the driving of each conveyor is independent.
[0004]
As such a geared motor, an orthogonal type geared motor has been proposed. (For example, see Patent Document 1)
[0005]
FIG. 5 shows an example of such an orthogonal geared motor. This geared motor GMo is one in which the motor M and the orthogonal gear reducer G are integrated.
[0006]
The motor Mo includes a motor shaft 2. The motor shaft 2 is rotatably supported by a pair of bearings 3A and 3B on the load side and the non-load side, and extends further to the non-load side of the non-load side cover 4 (ie, outside the motor Mo). A cooling fan 6 is provided in the extended portion.
[0007]
On the other hand, the orthogonal gear reducer Go has a hypoid gear set 12 including a hypoid pinion 8 and a hypoid gear 10.
[0008]
The output shaft 14 of the orthogonal gear reducer Go is a so-called hollow shaft, and can be attached to a conveyor (not shown) from the right side or the left side of the shaft.
[0009]
Reference numeral 16 in the figure is a terminal box of the motor Mo.
[0010]
[Patent Document 1]
Patent No. 2866247
[Problems to be solved by the invention]
Generally, in a geared motor used in a food factory, oil leakage and the like are extremely avoided due to the nature of the use site. Therefore, the inside of the speed reducer is hermetically sealed by an oil seal so that the lubricating oil in the speed reducer does not leak to the outside or the motor, and is used under strict control.
[0012]
However, in spite of strict management, there is a problem that a certain amount of oil leaks from the vicinity of the terminal box of the geared motor after a certain period of time has elapsed since the start of use.
[0013]
In view of such circumstances, the present invention has been made based on the facts found by a detailed investigation on the cause of oil leakage conducted by the inventor, and is used in a food factory with a simple structure (geared). It is an object of the present invention to provide a motor for a food factory which can almost completely prevent oil leakage of the motor.
[0014]
[Means for Solving the Problems]
The present invention relates to a motor used in a food factory, wherein the motor for a food factory further includes a cooling fan on the non-load side of the anti-load side cover, wherein the motor from outside the anti-load side cover In addition, the above problem is solved by providing a seal mechanism for preventing mist floating in the food factory from entering.
[0015]
The inventor doubted that oil leakage still occurs despite the strict sealing structure described above, and investigated the cause in detail.
[0016]
That is, when the component analysis of the oil flowing out from the vicinity of the terminal box was performed, it was found that the oil was not used for lubrication used in the speed reducer but was used in the food manufacturing process. did.
[0017]
From this fact, it can be inferred that the oil leak from the geared motor was not actually caused by poor performance of the seal part of the reduction gear, but the oil mist floating in the factory air by the motor fan. Is sucked into the motor, and gradually accumulates in the motor with the passage of a certain period of time, and as a result, it is considered that the true cause is that it leaks out from the vicinity of the terminal box.
[0018]
Even if the leaking oil is the oil used in the food factory, the fact that oil actually leaks from the geared motor is still unfavorable.
[0019]
Thus, in the present invention, the motor is provided with a seal mechanism for preventing mist floating in the food factory from entering the motor from outside the non-load side cover of the motor.
[0020]
In the present invention, what kind of configuration is adopted as the seal mechanism is not particularly limited, but as the seal mechanism, a V-ring is arranged between the non-load side cover of the motor and the fan. Adopting the configuration is preferable because the present invention can be implemented at low cost only by adding a V-ring without basically changing the conventional motor at all.
[0021]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
[0022]
FIG. 1 shows a geared motor GM1 obtained by integrating the motor M1 according to the embodiment of the present invention with the speed reducer Go shown in FIG. 5, wherein FIG. 1 (A) is a side view, and FIG. It is sectional drawing. FIG. 2 is an enlarged view of the vicinity of the non-load side cover of the motor M of FIG.
[0023]
As is clear from the comparison between FIGS. 1, 2 and 5, this geared motor GM1 is based on the same motor as the motor Mo used in the geared motor GMo shown in FIG. The V-ring 50 is disposed here by utilizing the gap S between the anti-load side cover 4 and the fan 6 which originally exists in FIG.
[0024]
Since the position of the V-ring 50 in the axial direction is regulated by the fan-side end face 4A of the non-load-side cover 4 and the end face 6A of the fan 6 on the non-load-side cover side, a separate position regulating means such as a retaining ring is also required. Not provided.
[0025]
The only difference between the geared motor GM1 shown in FIG. 1 and the geared motor GMo shown in FIG. 5 is the presence of the V-ring 50 provided between the non-load-side cover 4 and the fan 6 of the motor M1. Accordingly, in each of the drawings, substantially the same portions are denoted by the same reference numerals (both in the related art and the present invention), and the repeated description will be omitted.
[0026]
In food factories, especially factories that produce foods using oils such as bread, pasta, instant noodles, potato chips, there are unexpectedly many oil mist in the air. In the case of the conventional motor Mo, due to the function of the fan 6, oil mist floating in the air in the food factory has entered the motor M1 along a route indicated by a broken line A in FIG.
[0027]
However, in the above embodiment, the function of the V-ring 50 prevents the intrusion, so that the situation where the oil mist that has entered the motor accumulates as “liquid” is prevented from occurring, and the geared motor GM1 (motor M1 ) Can be prevented from occurring.
[0028]
As a result, with very little improvement, it is possible to obtain a product which is free from oil leaks, that is, which is very reliable as a (geared) motor used in food factories.
[0029]
3 and 4 show another embodiment of the present invention.
[0030]
In the embodiment shown in FIG. 3, a non-load-side bearing that supports the motor shaft 2 is replaced with a bearing 60 having a sealing function (instead of the conventional bearing 3 </ b> A) as a sealing mechanism that prevents oil mist from entering. It has been changed.
[0031]
In this embodiment, since only the bearing is changed, the number of parts does not increase. Therefore, the burden of inventory management does not increase, and the number of assembling steps does not increase. That is, it is possible to obtain a high-quality (geared) motor in which oil leakage is prevented while having a structure which is not particularly different from the conventional one in appearance and manufacturing.
[0032]
On the other hand, in the embodiment shown in FIG. 4, the shaft hole 70A of the anti-load side cover 70 is formed slightly larger than that of the conventional anti-load side cover 4, and the oil hole is formed between the shaft hole 70A and the motor shaft 2. The seal 72 is interposed.
[0033]
In this embodiment, the anti-load side cover 70 having a slightly different shape from the conventional anti-load side cover 4 is prepared as the anti-load side cover. It is also possible to use the side cover 4 as it is. In this embodiment, a normal (low-cost) oil seal 72 can be used as the oil seal, so that a low-cost (geared) motor can be obtained.
[0034]
As described above, in the present invention, there is no particular limitation on what kind of configuration is specifically adopted as the seal mechanism for preventing the mist floating in the food factory from entering the motor.
[0035]
Further, as is clear from the above description, the present invention does not necessarily need to be applied to a geared motor, and can be applied to a motor alone, and can be applied to a food factory, particularly a factory that manufactures food using oil. In the motor used, the original effect of the present invention of "prevention of oil leakage" can be obtained.
[0036]
Further, even when the geared motor is applied in combination with the reduction gear, the configuration of the connected reduction gear is not particularly limited.
[0037]
【The invention's effect】
As described above, according to the present invention, it is possible to provide a motor for a food factory which can almost completely prevent oil leakage of a (geared) motor used in the food factory at a low cost with a simple structure. The excellent effect that can be obtained is obtained.
[Brief description of the drawings]
FIG. 1A is a side view and FIG. 2B is a front sectional view showing an example of a geared motor in which a motor for a food factory to which the present invention is applied is combined with an orthogonal gear reducer. FIG. 2 is a sectional view of the geared motor shown in FIG. Enlarged view near the non-load side cover (and further enlarged view)
FIG. 3 is an enlarged view corresponding to FIG. 2 showing an example of another embodiment of the present invention. FIG. 4 is an enlarged view equivalent to FIG. 2 showing an example of still another embodiment of the present invention. FIG. 5 is a patent No. 2866247. (A) Side view and (B) Front sectional view corresponding to FIG. 1 showing a geared motor disclosed in the specification of Japanese Patent No.
Mo, M1 ... Motor Go ... Reducers GMo, GM1 ... Geared motor 2 ... Motor shafts 3A, 3B ... Bearing 4, 70 ... Anti-load side cover 6 ... Fan 8 ... Hypoid pinion 10 ... Hypoid gear 12 ... Hypoid gear set 50 ... V ring 60 ... Bearing 72A with seal function ... Oil seal

Claims (2)

A motor for use in a food factory, the motor for a food factory further provided with a cooling fan on the anti-load side of the anti-load side cover,
A motor for a food factory, comprising a seal mechanism for preventing mist floating in the food factory from entering the motor from outside the non-load side cover. In claim 1,
A motor for a food factory, wherein a V-ring is arranged as the seal mechanism between the non-load side cover and the fan.

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