JPH0248470Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a lubricating device for a weft insertion drive section of a shuttleless loom.

Prior Art The weft insertion drive device of a conventional shuttleless loom includes a loom body drive motor 2 attached to a loom frame 1, as shown in Fig. 3.
from transmitter gear 4 via pinion gear 3.
is driven, and a crank 6 and a crank arm 7 attached to one end of the shaft 5 are driven around the rotating shaft 5 fixing the transmitter gear 4, and a crank 6 and a crank arm 7 attached to the tip of the crank arm 7 are driven. A weft conveying body 12 is attached to the tip of the rack 8 and a group of gears 9 that mesh with the rack 8.
The band wheel 11 around which the steel flexible band 10 with the attached steel flexible band 10 is wound is driven, and the weft conveyor 12 is rotated by the forward and reverse rotation of the band wheel 11.
The structure was such that the weft insertion movement was performed by repeatedly inserting and withdrawing the warp threads into and out of the warp shedding.

In this case, the rack 8 attached to the tip of the crank arm 7 that slides in the vertical direction and the rack gib part 13 that supports the rack are extremely important parts that convert rotary motion into linear reciprocating motion. 8 and the rack gib portion 13 that supports it are under severe sliding friction conditions, and approximately 70% of the loom drive energy is consumed in this portion, so lubricating this portion is extremely important. Lubricating the rack 8 and the rack give part 13 is difficult because it is difficult to lubricate from the outside while the machine is in operation, and in order to ensure an appropriate amount of lubrication,
A frequent, centralized refueling system was adopted. That is, from an oil pump (not shown), water is automatically supplied to the above-mentioned rack 8 and the rack give section 13 (in the drawing, at three locations at the top, middle, and bottom of the rack give section 13) via the plumbing pipe 14 periodically and automatically using a timer for a certain period of time. Refueling was being carried out. The oil dripping down the rack give portion 13 is configured to be received by an oil pan 15 disposed at the lower part of the rack give portion.

Problems to be Solved by the Present Invention However, since the above-mentioned rack and rack give portions are constructed in an exposed open type, when weaving cotton fabrics, etc., the generated fluff adheres to the rack and rack give portions and is oiled. The oil absorbed by this fluff is absorbed by the fluff, causing oil depletion in the sliding parts of the liver and kidneys.
This may cause seizure and damage the parts.
Furthermore, there was a shortcoming in which female workers could accidentally drop small items such as hair pins they were wearing near the rack and the rack give area, leading to serious accidents. In addition, since the oil to be supplied dripped from the top to the bottom, a large amount of oil was consumed, and an oil pan was placed on the floor to catch the oil, so the work environment was easily contaminated with oil.

Means for solving the problem: The loom body drive motor is connected to a rack that slides up and down by a crank arm, and a set of gears meshing with the rack, which is connected to the loom main body drive motor through a suitable transmission means, and a correct transmission for weft insertion is carried out through a rack that slides up and down by a crank arm and a group of gears that mesh with the rack. The motion converting mechanism that converts rotational motion into linear reciprocating motion, which consists of band wheels that alternately rotate in reverse, is sealed with a cover that is divided into upper and lower halves. Among these, the upper cover is formed by a cover that is further attached and fixed to the machine frame, and a movable cover that is detachably attached to this fixed cover. Separately, the lower cover and the upper fixed cover are connected with a pipe via an oil supply pump. And with this oil pump,
Oil is sucked from the below-mentioned cover, the inside of which is an oil tank, and sent to the upper fixed cover, and the oil is dripped from the upper fixed cover to the movement conversion mechanism section.

Embodiment An example of an apparatus for carrying out the present invention will be described in detail with reference to the drawings. FIG.
Since the transmission path from the rotary shaft 5 to the rotating shaft 5 that drives the crank mechanism is exactly the same as the conventional example shown in FIG. 3, the transmission path up to this point is omitted.

Here, the rotating shaft 5 is rotatably supported by the machine frame 1, and has a crank hub 1 at its tip.
6 is installed. 17 is the crank pin,
One end of this crank pin is connected to the crank hub 16.
A crank arm 7 is attached to the central portion of the lower cover 21, and the other end thereof is fixed to a crank hub 18 rotatably supported on the inner surface of the lower cover 21.

Reference numeral 20 denotes a cover that seals the motion conversion mechanism section that converts the rotational motion of the weft insertion drive section such as the crank arm 7, rack 8, rack gib section 13, etc. into linear motion, and the cover includes a lower cover whose inside is an oil tank. 21, and an upper cover 22 detachably attached to the lower cover 21. Among these, the upper cover 22 further includes a fixed cover 22a fixed to the machine frame 1 and a movable cover 22b detachably attached to the cover 22a.

23 is an oil supply pump consisting of a trochoid pump whose internal gear is formed by a trochoid curve;
The pump is a lower pipe 24, which is connected to the lower cover 2.
1, while the upper pipe 25
and is connected to the ceiling surface of the fixed cover 22a. The drive source for this oil supply pump 23 is taken from a crankshaft 19 that is integrally attached to the rotary shaft 5, and the oil supply pump 23 is operated while this rotary shaft 5 is rotating.

An example of a weft insertion driving unit oil supply device implementing the present invention is configured as described above, and when the rotating shaft 5 is driven from the loom main body drive motor via the transmission means during machine operation, Since the crank hub 16 fixed to the rotating shaft rotates around the rotating shaft 5, the lower end of the crank arm 7 performs rotational movement via the crank pin 17 attached to the crank hub 16, while the crank arm 7 rotates through the crank pin 17 attached to the crank hub 16. The upper end of 7 performs a sliding movement up and down. Here, since a rack 8 is fixed to the upper end of this crank arm 7, as this rack 8 slides up and down, the gear 9 that meshes with this rack 8 is adjusted to the correct position as shown in FIG. A band wheel 11 is integrally mounted on the shaft which rotates in the opposite direction and thus fixes this gear 9.
rotates in forward and reverse directions alternately, so that the weft insertion conveyor 12 is inserted into the warp shedding via the flexible band 10 whose one end is attached to the outer circumferential surface of the band wheel, and repeatedly escapes and performs the weft insertion movement.

By the way, when the rotating shaft 5 rotates, the rotating shaft 19 rotates via the crank hub 18 attached to the crank pin 17, so that the trochoid pump 2
3 is driven, and as a result, via the lower pipe 24,
The oil stored in the internal oil tank of the lower cover 21 is sucked, passes through the upper pipe 25, and is sequentially dripped from the ceiling surface of the upper fixed cover 22a. An oil pan 26 is disposed inside the upper cover 22a, and since the oil pan 26 has a number of holes, it is easy to access the oil pan 26 from the holes.
As a result, the sliding portion of the rack give portion 13 is constantly supplied with oil. Since the lower cover serves as an oil tank, the oil dripping down the rack 8 and the rack give part 13 is stored in the oil tank, and thereafter this oil is sucked up again by the oil supply pump and used for circulation.

Effects As mentioned above, the present invention seals the motion conversion mechanism for crank arms, racks, etc., which converts rotational motion into linear motion, with a cover that is divided into two parts, and a refueling pump is connected to the lower cover, the inside of which is an oil tank. Since the oil is sucked up and sent to the ceiling surface of the upper cover, and oil is constantly dripped from this ceiling surface to the motion conversion mechanism section, compared to the conventional method, fluff adheres to the motion conversion mechanism section. As a result, there is no need to run out of oil due to fluff, and the work environment is also free from oil contamination.Also, part of the cover is removable, making maintenance extremely easy. In addition, the cover significantly reduces noise, providing extremely practical effects.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of the main parts showing an example of a device implementing the present invention, Fig. 2 is a perspective view of the main parts taken from arrow A in Fig. 1, and Fig. 3 is the main parts of a conventional weft insertion drive section. It is an explanatory diagram. 2... Machine main body drive motor, 5... Rotating shaft, 7
... Crank arm, 8 ... Rack, 13 ... Rack give, 20 ... Cover, 21 ... Lower cover, 22 ... Upper cover, 22a ... Fixed cover, 22b ... Movable cover, 23 ... Oil supply pump, 24, 25...pipe.

Claims (1)

[Scope of utility model registration request] The weaving machine main body driving motor is connected to a rack that is moved vertically by a crank arm through an appropriate electric means, and a band wheel that rotates alternately in forward and reverse directions for weft insertion through a group of gears meshing with the rack. In a lubricating device for a weft insertion drive part of a shuttleless loom, which is equipped with a mechanism that converts a rotary motion into a linear reciprocating motion,
The motion conversion mechanism from rotational motion to linear motion of the crank arm, rack, etc. is sealed with a cover divided into upper and lower parts, and the upper cover is further attached to a fixed cover and to this fixed cover in a detachable manner. Separately, the lower cover and the upper fixed cover are connected by a pipe through an oil supply pump, and the oil pump sucks oil from the lower cover, the interior of which serves as an oil tank, to form the upper fixed cover. 1. An oil supply device for a weft insertion drive section of a shuttleless loom, characterized in that the oil supply device is configured to supply oil dropwise from the upper fixed cover to the motion conversion mechanism section.