JPH077331Y2 - Oil leak prevention device in gearbox of spinning machine - Google Patents

Description

[Technical Field of the Invention] The present invention relates to an oil leakage prevention device for a gearbox of a spinning machine, and more particularly, to a fixed frame provided on both sides of the gearbox adjacent to a window hole of the gearbox. In a gearbox of a spinning machine, which is composed of oil seal blocks sandwiched between the oil seal blocks mounted on the shafts so that the drive shafts can rotate, and elastic packings arranged with the oil seal blocks so as to close the window holes. The present invention relates to an oil leakage prevention device.

BACKGROUND ART Generally, the machine side of a gearbox of a spinning machine is composed of a frame, a partition plate, a top cover, etc., and these are for a drive shaft extending from a drive unit in the gearbox to the machine side. A window hole is provided.

By the way, recently, with the increase in the speed of the spinning machine, the drive device in the gear box, for example, the gear group has been actively lubricated for lubrication, and the lubricated oil is fed through the window hole. There is a risk of leakage to the table side.
If the oil leaks to the machine base, the cotton dust easily adheres to the oil, and the cotton dust that adheres to the oil will affect the product. Must be prevented from leaking.

In a conventional spinning machine, as shown in FIG. 7, two rubber pieces each having a semicircular cutout for forming a circular hole through which each drive shaft 2a ′, 2b ′, 2c ′ of the draft roller passes. The plates G, G prevent oil from leaking from the gear box, and as shown in FIG.
Brushes B made of a large number of bristles are fixed to both sides of the window holes through which a ′, 2b ′, 2c ′ extend to block the entire window holes and prevent oil from leaking from the gear box. Has been.

However, in the former case, the gap between the drive shafts is deviated due to a manufacturing error, or the gap between the drive shafts is positively changed (for example, due to the difference in the fiber length of the fiber bundle used in the draft roller). It is necessary to prepare many sets of rubber plates G to adjust the roller gauge between the rollers), and in the latter case, it is difficult to completely seal around the rotating drive shaft. was there.

In order to solve these problems, the present applicant has proposed, as an oil leakage prevention device in a gear box of a spinning machine, a fixed frame provided on both sides of a window hole for a drive shaft of a gear box, and We have already proposed an oil leakage prevention device that consists of an oil seal block that is attached between fixed frames so that each drive shaft can rotate, and an elastic packing that is arranged with this oil seal block. (Japanese application No. Sho 63-132319).

DISCLOSURE OF INVENTION Problem to be Solved by the Invention As described above, in the oil leakage prevention device in the gear box of the spinning machine already proposed by the present applicant, in the oil leakage from the joint surface between the fixed frame and the oil seal block or the elastic packing, The present invention provides a device for preventing oil leakage in a gearbox of a spinning machine, which is provided with a device for preventing leakage of oil from a joint surface between a fixed frame and an oil seal block or an elastic packing, because the device for preventing leakage is insufficient. Is intended.

Means for Solving the Problems In order to achieve the above object, the present invention provides a fixed frame provided adjacent to and on both sides of a window for a drive shaft in a gear box of a spinning machine, and the fixed frame. A gear of a spinning machine, which is sandwiched between the oil seal blocks and mounted on the shafts so that the drive shafts can rotate, and an elastic packing arranged together with the oil seal blocks so as to close the window holes. In the oil leakage prevention mounting in the box, a groove is formed on at least one surface of the joint surface between the fixed frame and the oil seal block and / or the elastic packing.

Action At least one surface of the joint surface between the fixed frame and the oil seal block and / or the elastic packing, for example, the joint surface of the fixed frame is provided with a recess and a groove-shaped space is provided. The oil leaching from the joint surface to the machine base side stays in the groove-shaped space, and does not leak to the machine base side.

Embodiment Hereinafter, an oil leakage prevention device for a gear box of a spinning machine shown in the drawings will be described as an embodiment of the present invention.

In FIG. 1, reference numeral 1 denotes a gear box, which is provided on a frame F of a spinning machine and is composed of a partition plate 3 and a gear box cover 4. A drive unit for driving the draft roller 2 is housed in the gear box 1, and the drive unit is mounted on a roller stand R and has different rotation speeds of a front roller 2a, a middle roller 2b, and a back roller 2c. A gear group for driving the gears is provided, and the gear group can change the draft ratio and the roller gauge according to the fibers used for spinning.

As shown in FIGS. 2 and 3, the gearbox 1
Each drive shaft 2 of the draft roller extending from the drive part inside
For a ', 2b', 2c ', the window holes 5 which are inclined according to the draft roller arrangement angle of the roller stand R are formed by notching a part of the partition plate 3 and the gear box cover 4, respectively. It is provided at the eye. Adjacent to the window hole 5, the fixed frame 6 is attached to the gear box cover 4, and the fixed frame 7 is attached to the partition plate 3.
Is stuck. These fixed frames 6 and 7 are both L
The pressing portion 6a has a letter shape and is bent at a right angle from the fixed portion of the fixed frame 6 and a support portion 7a is bent at a right angle from the fixed portion of the fixed frame 7, and the pressing portion 6a and the support portion 7a are formed on each drive shaft. 2
An oil seal block 8 is mounted between the shafts 2a ', 2b', 2c 'via bearings 9 so that the a', 2b ', 2c' can rotate. The pressing portion 6a of the fixed frame 6 and the support portion 7a of the fixed frame 7 are provided on both sides of the window hole 5 in parallel with the inclination of the window hole 5, that is, inclined according to the draft roller arrangement angle of the roller stand R. And each is also parallel.

As shown in FIG. 2, each oil seal block 8,8
Elastic packings 11 and 11 are arranged between the oil seal blocks 8 and 8 to tightly seal the oil seal blocks 8 and 8 by their elasticity.
The elastic packings 11, 11 are also sandwiched between the pressing portion 6a of the fixed frame 6 and the support portion 7a of the fixed frame 7.

In this way, since the oil seal blocks 8 and 8 form independent oil seal parts for each draft roller drive shaft, when it is necessary to change the roller gauge,
Just replace the elastic packing 11 with one with a different thickness,
Further, the elastic packing is made of oil-resistant synthetic rubber, so that even slight changes in the roller gauge can be followed by its elasticity.

As shown in FIGS. 3, 4, and 5, a concave portion 15 is formed around the oil seal block 8, and the surface of the pressing portion 6 a of the fixed frame 6 faces the concave portion 15. In this case, two strips of rubber 12, 12 are pasted at intervals, and a recess 14 is formed on the surface thereof. Further, two pieces of rubber pieces 13, 13 are also affixed to the surface of the supporting portion 7a of the fixed frame 7 at intervals, and a concave portion 14 is formed on the surface thereof. These recesses
14, 14 cooperate with the concave portion 15 formed on the surface of the oil seal block 8 to prepare the groove-shaped space, so that the oil that tries to seep out from the inside of the gear box 1 to the machine side (roller stand side) is formed in the groove-shaped space. It prevents the bleeding further and prevents further exudation.

An O-ring or a lip seal is provided at the inner end of the oil seal block 8 in order to prevent the oil from leaking to the machine base side around the drive shaft of the draft roller.
10 is installed.

When forming the concave portion 14 on the surface of the support portion 7a of the fixed frame 7 in a communicating state, the oil stagnated in the groove-shaped space is caused to flow downward through the concave portion 14 and is collected from the lower end to an oil pan or other oil receiver. Is possible.

Further, as shown in FIG. 5, in the case where the oil seal block 8 is provided with a recess 15 for forming a groove-like space in the joint surface between the oil seal block 8 and the elastic packing 11, the oil seal block 8 The oil does not leak from the joint surface between the elastic packing 11 and the elastic packing 11, and the groove-shaped space has a function of guiding the oil stagnated in the groove-shaped space in the upper part to the lower part. As shown in FIG. 6, even if the recess 16 is formed in the elastic packing 11 to form the groove-shaped space, the same action and effect can be obtained.

EFFECTS OF THE INVENTION According to the present invention, since the groove-shaped space is provided on the joint surface between the fixed frame and the oil seal block and / or the elastic packing, the oil that tries to seep out between them is stagnated in the groove-shaped space. However, oil does not seep out of the gearbox.

[Brief description of drawings]

FIG. 1 is a partial schematic front view of a spinning machine showing an embodiment of the present invention, FIG. 2 is a side view showing a partial cross section of an apparatus showing the embodiment of the present invention, and FIG. FIG. 4 is a perspective view of an essential part, FIG. 5 is a plan view of the same, FIG. 6 is a plan view showing another embodiment, and FIGS. 7 and 8 are sectional views of an essential part of a conventional device. . F ... Frame, R ... Roller stand, 1 ... Gear box, 2 ... Draft roller, 2 '... Draft roller drive shaft, 3 ... Partition plate, 4 ... Gear box cover, 5 ... Window hole,
6,7 ... Fixing plate, 6a ... Pressing part, 7a ... Supporting part, 8 ... Oil seal block, 9 ... Bearing, 10 ... Oil seal, 11 ... Elastic packing, 12,13 ... Rubber piece, 14,15,16 ... Recess.

Claims (1)

[Scope of utility model registration request] 1. A fixed frame provided adjacent to a window for a drive shaft in a gear box of a spinning machine and provided on both sides of the window, and sandwiched between the fixed frames so that each drive shaft can rotate. In a gearbox of a spinning machine, which comprises an oil seal block mounted on those shafts and an elastic packing arranged together with the oil seal block so as to close the window hole, a fixed frame and an oil seal block are mounted. And / or on the joint surface with the elastic packing,
A device for preventing oil leakage in a gear box of a spinning machine, wherein a recess is formed on at least one surface and a groove-shaped space is provided.