JPH0638121Y2 - Lubricator for tappet cam shaft of loom - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to an oil supply device for a tappet cam shaft drive mechanism of a loom shedding device.

(Prior Art) The conventional tappet cam shaft drive mechanism has been refueled by using the actual open sho 58-1.
As shown in the figure of Japanese Patent No. 92980, the bearing portion of the drive mechanism is oil-lubricated in a tappet box having a warp shedding device drive mechanism installed on the side of the loom base. The tappet box provided in contains a specified amount of oil for lubrication, and multiple tappet cams are rotatably supported and some of the cams and cam followers are in an oil bath. Lubrication was performed by the rotation of the bearing, but the bearing could not be sufficiently lubricated.

Also, an oil pan as shown in FIG. 4 is provided above the tappet cam shaft, and a drip hole is provided at the bottom of the tappet cam shaft to pump oil in the tappet box with an oil pump to circulate the oil for lubrication by the oil drip. I was trying to let it.

(Problems to be solved by the invention) As described above, in the oil supply device in which the oil in the tappet box is pumped to the oil pan by the oil pump and drip into the oil supply section, the cotton swabs and cams that have entered the box, Metal powder generated by abrasion on the friction surface such as a cam follower damages the oil pump, not only lowering pump performance but also replacing expensive pumps and the number of parts such as related parts and piping parts. A refueling device that does not need to use this oil pump has been desired.

(Means for Solving Problems) Therefore, in the present invention, an oil bath roller arranged in an oil bath state inside the tappet box and a roller arranged near the oil sump higher than the bearing portion of the tappet cam shaft are provided. A belt is stretched between and a scraper for collecting the oil adhering to the revolving belt is provided close to the oil sump, and the oil collected in the oil sump by the scraper passes through the oil passage and the tappet cam shaft bearing. The parts were distributed and refueled.

Further, the oil sump is an oil pan arranged at a position higher than the tappet cam shaft, and oil is allowed to drip into the bearing portion through a hole formed at the bottom thereof.

(Operation) Since the present invention is configured as described above, oil adheres to the surface of the belt that circulates in the oil bath portion in the tappet box, and the oil adhered to this belt is near the oil sump, and sometimes near the oil pan. The scraper is scraped off at the upper part of the roller to collect the oil in an oil sump such as an oil pan.The collected oil is dripped onto the bearing part of the tappet cam shaft through a hole made in the bottom of the oil sump. It has become so.

As described above, in the present invention, since the scraper removes the oil, and the wear metal powder contained in the oil is adhered to the scraper to be removed, only the oil is dropped onto the tappet cam shaft or the like. Oil can be lubricated without using an oil pump.

(Example 1) The example of FIG. 1 and FIG. 2 which implemented this plan is demonstrated. The first embodiment is an example in which oil is dripped from the hole at the bottom of the oil pan to the bearing portion of the tappet cam shaft drive mechanism provided on the side of the loom base.

Reference numeral 1 is a heald frame, which is connected to a cam lever 4 of an opening device drive mechanism by a wire rope 2 connected on the left and right lower sides thereof, and a cam follower 5 at one end thereof is driven by a tappet cam 6. The tappet cam 6 is borne on the shaft of the cam drive shaft 7, and by this rotation, the cam lever 4 swings around the support shaft 8 to make the heald frame 1 move up and down, and the opening motion is performed.

That is, the tappet cam 6 is driven via an idle shaft (not shown), but the tappet cam 6 is fitted to the fixed tappet shaft 7 via the bearing portion 6a, and the tappet cam 6 is formed by the fabric structure. The rotation of 6 is determined, and the movement thereof is converted into the swing of the cam lever 4, and is converted into the vertical movement of the heald frame 1 via the wire rope 2. As shown in FIG. 4, in the conventional opening device, the oil in the tappet box 3 is pumped up by the oil pump 21 and stored in the oil pan 17, and the bearings of the tappet cam shaft 7 are inserted through the holes 22 and 23 formed at the bottom of the oil pan 17. Oil is dropped onto the bush 19 inserted into the contact portion between the portion 6a and the cam lever 4 and the connecting member 20. However, in such a case, the metal powder mixed in the fly cotton or oil is pumped up by the oil pump 21, so that the pump 21 is easily damaged.

Therefore, in the present invention, as shown in FIG. 2, on the end side of the tappet cam shaft 7 supported in the tappet box 3,
The tappet gear 9 and the change gear 10 are provided, and the rotation of the tappet cam 6 is determined by the fractional combination of these two gears. The shaft 11 is supported. And this change gear
A pulley 10a coaxially fixed to 10 and an oil bath roller loosely fitted to a shaft 13 fixed to the tappet box 3 below the pulley 10a.
12, above the tappet box 3 and in the oil pan 17
The belt 14 is stretched between the roller 15 and the roller 15 which is loosely fitted to the support shaft 16 provided close to the belt 14, and the belt 14 is rotated by the rotation of the gear 10.
After passing through the oil bath roller 12, the roller can reach the upper roller 15 and re-circulate to the pulley 10a.

At this time, the belt 14 may be stretched directly from the pulley 10a having the driving portion to the roller 15 close to the oil pan 17, and the meshing with the tappet gear 9 and the change gear 10 may be a transmission mechanism other than a gear. May be.

In this way, the belt 14 is brought into the oil bath state in the oil in the tappet box 3 and then conveyed to the roller 15 near the upper oil pan 17, where the oil attached to the belt 14 is conveyed to the rollers. The scraper 18 in contact with 15 scrapes off the oil, and the oil filtered by the scraper 18 is collected and stored in an oil pan 17.

Then, the bearing portion of the tappet cam shaft 7 and the portion of the cam lever bush 19 are supplied with oil dropped from the holes 22 and 23.

(Embodiment 2) A second embodiment shown in FIG. 3 will be described. The same parts as those of the first embodiment are designated by the same reference numerals. Tappet cam 6 supported on tappet cam shaft 7 in tappet box 3
Rotates, and the cam follower 5 following this rotates the cam lever 4 to change its direction, and the heald frame 1 reciprocates up and down.

In this case, as shown in FIG. 3, the bushing to which rotation is transmitted by using the bearing portion 6a on the fixed tappet cam shaft 7 as a bearing.
A pulley 6c having a groove for the belt 14 is fixed to 6b, and the pulley 6c and the box 3 support an oil bath roller supported by a shaft 13 of a shaft.
A belt 14 is stretched between 12 and. The lower side of the oil bath roller 12 is in an oil bath state with the oil in the box 3. Therefore, the stretched belt 14 circulates between the pulley 6c and the oil bath roller 12 by the driving rotation of the pulley 6c,
The oil adheres to the belt 14 and is carried upward.

At this time, a scraper 18 is provided on the bush 6b near the pulley 6c in a hook shape, and a cut is made in the fixed hoop 7a at the end, and the oil adhering to the belt 14 scraped by the scraper 18 is guided to this cut. The bearing 6a is supplied with oil.

Therefore, in the oil carried by the belt 14, the cut portion serves as an oil sump 17a and each bearing portion 6 of the tappet cam 6
Refuel to a.

(Effects of the Invention) According to the present invention, since the oil pump is not used in this manner, there is no trouble due to fly dust or worn metal powder when the oil is supplied to the tappet cam bearing portion. Since no piping parts are used, the cost is low, and if the oil bath roller is placed close to the bottom surface of the tappet box, reliable oil supply can be achieved even if the oil decreases.
Improves reliability.

[Brief description of drawings]

FIG. 1 is a schematic front view of an opening device provided with an oil supply device according to a first embodiment of the present invention, and FIG. 2 is a front view showing a partial cross-section of an eleventh embodiment oil supply device using an oil pan. . Next, FIG. 3 shows a second embodiment and is a side view showing a part of the tappet cam shaft in a cross section. Further, FIG. 4 is a schematic front view of an oil supply device using a conventional oil pan. 3: Tappet box 6: Tappet cam, 6a: Bearing part 6b: Bushing 6c: Pulley 7: Tappet cam shaft 7a: Fixed hoop 9: Tappet gear 10: Change gear 10a: Drive pulley 12: Oil bath roller 14: Belt 15: Roller 17: Oil pan, 17a: Oil sump 18: Scraper 22, 23: Oil drip hole

Claims (2)

[Scope of utility model registration request] 1. An oil supply device in which a tappet box bearing in a tappet box having a warp shedding device drive mechanism provided on the side of a loom base is oil-lubricated, and an oil bath arranged in an oil bath state in the tappet box. A belt is stretched between the roller and a roller arranged near the oil reservoir at a position higher than the bearing portion, and a scraper for collecting oil attached to the revolving belt is provided near the oil reservoir, and the scraper is used to remove the oil. An oil supply device for a tappet cam shaft of a loom, wherein the oil collected in the sump can be distributed to a bearing portion of the tappet cam shaft through an oil passage. 2. A utility model registration in which the oil sump is an oil pan arranged at a position higher than the tappet cam shaft, and the recovered oil can be dripped into a bearing portion of the tappet cam shaft through a hole formed in the bottom of the oil pan. The refueling device according to claim 1.