JPS6233829A - Draft device in spinning machine - Google Patents

Abstract

PURPOSE:To prevent admixture of fly waste and dusts into a driving force transmission part and to simplify a lubricating operation, by putting a driving force transmission part for bottom rollers with 1-2 spindles independent from a drive shaft in a casing and providing the casing with an oil feed hole. CONSTITUTION:Driving force is transmitted from each of the driving shafts 14, 15 and 16 through each drive force transmission part to each of bottom rollers 1b, 2b and 3b and the bottom rollers are rotated. Each drive force transmission part is all put in the casing 5 in an approximately closed state and admixture of fly waste, etc., scattered from the sliver S is prevented. The oil feed hole 72 is set in the casing 5 and a grease oil is fed a hollow part.

Description

[Detailed description of the invention] Industrial applications The present invention relates to the structure of a draft device in a spinning machine.

Conventional technology The draft device of a spinning machine usually consists of three pairs of roller groups: a back roller, a middle roller, and a front roller.
An endless rubber belt called an apron is often wound around the middle roller. For each pair of rollers mentioned above, the upper roller is called the top roller and the lower roller is called the bottom roller. In conventional drafting devices, the top roller is independent for every two spindles, and the bottom roller is driven by one drive common to all spindles. It was generally made up of axes. However, a small number of proposals have been made in which the bottom rollers are made independent in units of one or two spindles, thereby improving the functionality of the draft device, and these are attracting attention. The common structure of these improved draft devices is that the bottom rollers are made independent in units of one or two spindles, and a single drive shaft that is common to all spindles is provided separately, and the drive shaft is connected to the bottom roller through a transmission means such as a gear. and transmits driving force to the bottom roller.

For example, Japanese Patent Publication No. 57-35574 discloses a device in which bottom rollers are made independent for each spindle and the rollers can be driven or stopped for each spindle.

Further, US Pat. No. 2,132,299 discloses a device in which middle bottom rollers are made independent every two spindles so that the apron can be easily replaced.

Problems to be Solved by the Invention As described above, when the bottom rollers of the drafting device are made independent for each spindle or every two spindles, the following problems occur.

First, a large amount of fluff generated during draft operation adheres to the gears of the transmission means and causes malfunctions.

Furthermore, it is necessary to apply lubricating oil such as grease to the gear, but as the gear rotates, this oil scatters around and stains various parts of the spinning machine and the threads. In particular, the front roller rotates at the highest speed compared to other rollers, so when driving the front roller with the above gear,
It also has the disadvantage that oil scatters significantly and requires frequent oil supply. The present invention aims to solve these problems.

Means for Solving the Problems The draft device of the present invention houses the above-mentioned transmission means, that is, a driving force transmission section from a common drive shaft for all the spindles to independent bottom rollers for every one or two spindles, in a casing, and
The casing is characterized in that an oil supply hole is provided in the casing for supplying oil to the transmission section from the outside.

Function: The casing prevents fluff generated in the draft device from adhering to the transmission section, and also prevents oil from scattering from the transmission section to the outside of the casing. Furthermore, lubricating oil can be easily supplied to the transmission section through an oil supply hole provided in the casing.

Embodiment FIG. 1 shows the entire draft device according to the present invention.

This draft device consists of a back roller (1), a middle roller (
It mainly consists of three pairs of draft rollers: 2) and a front roller (3), and a mechanism that supports or drives each of these rollers. The above draft roller (1) (21
(3) are the upper top rollers (1a) and (2a), respectively.
(3a) and lower bottom roller (lb) (2b) (3b
), each top roller is supported by a top roller support (4) and each bottom roller is supported by a casing (5). Top roller support 4) is the first
The casing (5) is rotatably supported by a rod (6) extending in a direction perpendicular to the plane of the drawing.
) and is fixed on the frame (8) of the spinning machine main body by a screw (71).In the top roller support (4), an operating lever ( 9) is rotatably supported by a shaft (11), and a hook (
12) is engaged with the roller (13) provided on the casing (5), thereby fixing the position of the top roller support (4), and at this time each top roller (Ia) (2a)
(3a) and each bottom roller (lb), (2b), and (3b) are vertically pressed against each other.

Each top roller (La) (23) (3a) is composed of two spindles, and each bottom roller (IJ (zb) (3b) is composed of one spindle.
It is formed in units of weights, and two weights each are supported by one casing (5). (14) (15X16
) are drive shafts that extend in the direction perpendicular to the plane of the paper and are connected to drive sources not shown, and rotate the bottom rollers (lb) (2b) (3b) of all weights via transmission parts such as gears, which will be described later. drive (17) is a first sliver guide fixed to the rod (6) via a bracket (18);
19) connects the casing (5) via the bracket (21)
(22) is the apron wound around each of the middle rollers (2a) and (2b), and (23) is the both side edges of the apron (22) on the middle bottom roller (2b) side. a traverse guide (24
) is a lower apron guide that supports the apron (22) and is fixed to the casing (5) via a bracket (25).

Further, (26) is a spinning nozzle provided in front of the front roller (3), and has two air jetting nozzles inside which jet compressed air flows swirling in opposite directions.

The sliver (S) drawn out from the dance (not shown) passes through the first sliver guide (17) as shown by the dashed line, and then passes through the nip points of each draft roller (11 (2) (3)) in order. Then, it passes through the spinning nozzle to the delivery roller (
27) and wound onto a bobbin (not shown).

The peripheral speeds of the draft rollers (11 (2) (3) are set so that the back roller (1) is the slowest and the front roller (3) is the fastest.
(21(3)), the sliver is drafted to a predetermined thickness.The sliver that has left the front roller (3) is swirled by the compressed air flow in the spinning nozzle (26). , one spun yarn is produced by heating.0 Figure 2 is a plan view of the casing (5), in which two mutually symmetrical parts (5aXsb) are separated by a suitable sealing material. It is connected with screws, and two bottom rollers (1bX2bX3
b) is supported in a protruding form O Figure 3 is a view of one of the casings (5) (5b) seen from the inside, and the shaded area shows the joint surface with the other casing (5a). . The casing (5b) has holes and protrusions (31X3) for positioning with the other casing (5a).
2), and holes (33) to (39) for inserting screws for connecting and fixing both casings (5a) and (5b) to each other,
A hole (41) for inserting the rod (6) and a hole (4) for passing the screw (42) for fixing the roller (13).
3) are provided respectively. Furthermore, the casing has holes (4) through which each bottom roller (lb) (2b) (3b) passes.
4 bars 45) (46) and each drive shaft (14) (15X16
) are provided with holes (47), (48), and (49), respectively, and a hole (51) for housing a clutch, which will be described later.
is provided. Holes (4) for drive shafts (15) (16)
8) There is a recess (52) around the drive shaft (119).
A recess (53) is formed around A4 and the clutch hole (4υ (51)), and both recesses (5285
3) is the hollow part (54x55) of the casing (5) when the casing parts (5aX5b) are joined together.
) to form. The rain hollow parts (54) and (55) are shielded so as not to communicate with each other, and the first hollow part (54) has holes (45) and (4) for the middle roller and front roller.
6), and the second hollow portion (55) partially communicates with the back roller hole (44).

Next, each bottom from each drive shaft (14X15X16). - The mechanism of the driving force transmission section to the (lb) (2bX3b) will be explained with reference to Figs. 4 to 6.

FIG. 4 shows the transmission section of the front bottom roller (3b), and the transmission section actually has a structure that is symmetrical with respect to the dashed line (A1).

The front bottom roller (3b) has a gear (61) at the end and a bearing (62863) in the hole (46).
It is rotatably supported by. Both bearings (6
2 x 63), there is a cylindrical body (
65) is attached, and the screw (67) screwed into the hole (66) formed at the upper end of the casing is fitted into the groove (64), so that the front bottom roller (3b)
axial movement is restricted. Drive shaft for front bottom roller (bearing (6) in bore (49)
A gear (69) fixed to the drive shaft (16) is rotatably supported by the drive shaft (16) and meshes with the gear (61) described above in the hollow part (54), thereby directing the rotation of the drive shaft (16) to the front. It is transmitted to the bottom roller (3b). The support and drive mechanism for such a front bottom roller (3b) is constructed symmetrically about the dashed line (Al) as described above, so in reality, one spindle of the front bottom roller (3b) is one spindle. Two front bottom rollers (3b) are supported by the casing (5), and one drive shaft (16) drives the two front bottom rollers (3b) at the same time. (71)
is a sealing member that closes the hole (49), (72) is an oil supply hole formed in one casing (5a), (
73) is a grease nipple provided in the supply hole (72). The supply hole (72) is provided at a position that allows communication between the hollow part (54) of the casing (5) and the outside, and the grease nipple (73) supplies oil such as grease from the outside into the hollow part (54). A well-known structure is used that can be injected and prevent backflow of oil from the hollow portion to the outside.

FIG. 5 shows a driving force transmission section to the middle bottom roller (2b). The structure of the transmission section is symmetrical about the dashed line (A2), and is almost the same structure as the transmission section of the front bottom roller (3b) described above, so a detailed explanation will be omitted. In the figure, (74) is a screw for assembling the casing (5) together, and (75) is a traverse rod that supports the traverse guide (23) described above. ) extends through a groove (76) formed at the lower end of the apron, and by traversing the apron (22) of all weights from side to side in unison, the apron prevents wear due to contact with the sliver. do.

FIG. 6 shows the driving force transmission section of the back bottom roller (lb). In the same figure, the back bottom roller (1b)
The structure and support mechanism of the drive shaft (14) and the drive shaft (14) are almost the same as those of the front bottom roller (3b) and middle bottom roller (2b) described above.
4) has only one gear (81) in the middle of the hollow part (55). (82) is an electromagnetic clutch installed in the hole (51), and the gear (83) attached to the shaft of each clutch (82) is the gear (83) of the back bottom roller (1b).
4) are interlocked with each other. Further, another gear (85) is provided between the gears (83883) of the clutch, and this gear (85) is the gear (83883) of the drive shaft (14).
It meshes with 1). When both clutches (82) are turned on, the rotational driving force of the drive shaft (14) is transferred to the gear (82).
1) to the gear (85), and further to the gears (85) on both sides.
3) and the two back bottom rollers (1bBl
b) rotate together.

In Figure 6, when the right clutch (82) is turned off, the gear (
85) to the right gear (83) is cut off,
Only the right back bottom roller (1b) stops.

According to the present draft device described above, each bottom roller (1b) (2bX3b) is connected to each drive shaft (14) (15X1
6), the driving force is transmitted through the driving force transmitting section, respectively, and the driving force is rotated. Since the transmission part of the back bottom roller (1b) includes an electromagnetic clutch (82), in an emergency, the rotation of the back roller (1) of the desired weight is stopped by turning off the clutch (82) of the desired weight. The sliver can be cut between the back roller (1) and the middle roller (2), and spinning of the yarn can be stopped. Also, each driving force transmission section is approximately located within the casing (5). Since the sliver (S) is housed in a sealed state, fluff scattered from the sliver (S) during draft operation does not enter the transmission section, reducing the possibility of failure. Further, oil scattered from the gears of each transmission section does not leak to the outside of the casing (5), so there is no risk of contaminating the yarn being spun or other devices.

Lubrication oil is supplied to the transmission part through the oil supply hole (72
). In other words, connect a suitable grease gun to the grease nipple (73) and apply grease oil to the hollow part (5
4), and the injected oil spreads over the entire transmission part in the hollow part (54) as the draft device is driven. Therefore, there is no need to disassemble the casing (5) when supplying oil, and new oil can be easily supplied as the oil deteriorates. In addition, in this embodiment, the oil supply hole (72) is provided only for the first hollow part (54).
), but since the back roller (1) rotates at a low speed, it is not necessary to supply oil very frequently to the transmission part of the roller (1), and the casing (5)
This is because if oil is applied during assembly, stable operating conditions can be maintained for a long period of time. Therefore, an oil supply hole may also be provided in the second hollow part (55),
Also, attach the casing (5) to each bottom roller (lb) (2t
)) (3b) Each block may be divided into a plurality of blocks, and each block may be provided with an oil supply hole.

Furthermore, in this draft device, each bottom roller (1b) (2
Since b and bar 3b) are each made independent in units of one spindle,
This has the advantage that the inclination or vibration of the axis of one bottom roller does not affect other bottom rollers, and precise adjustment can be made for each weight. In addition, if the outer periphery of the bottom roller (1b) (2bX3b) is damaged or worn due to contact with the sliver (S), loosen the screw (67) of the weight and remove the bottom roller from the bearing (62) ( 63), cylinder (65)
and can be removed from the casing (5) together with the gear (61). Therefore, remove the bottom roller with the problem from
Since each spindle can be easily replaced, maintenance is very easy.In this embodiment, each spindle is made independent, and the bottom rollers for two spindles are supported by one casing. However, the bottom rollers of the weights may be individually supported by one casing, and it is also easy to make the bottom rollers independent for every two spindles instead of for each spindle. .

Effects of the Invention According to the present invention, since each bottom roller is made independent in units of one or two spindles, it is possible to easily replace the rollers and aprons due to damage or wear. In addition, since the part that transmits the driving force from the drive shaft to the bottom roller is covered by the casing, no fluff or dust can enter the transmission part from the outside, thereby keeping the failure rate of the draft device low. Since the casing can prevent the lubricating oil from scattering or flowing out from the transmission part when the opening surface is formed, the yarn to be manufactured will not be contaminated.
The area around the draft device can always be kept beautiful. Further, since oil can be supplied to the transmission section from the outside through an oil supply hole provided in the casing, it does not take much time to supply oil, and good operation of the draft device can always be achieved.

[Brief explanation of drawings]

FIG. 1 is a side view of a draft device according to the present invention, FIG. 2 is a plan view of a casing equipped with a bottom roller, FIG. 3 is a side view of the parts constituting the casing viewed from the inside, and FIGS. 4 to 6 The figure is a cross-sectional view showing each driving force transmission section of the front bottom roller, middle bottom roller, and back bottom roller. (1b)...Back bottom roller (2b)...Middle bottom roller (3b)...Front bottom roller (5)...Casing (14X15) (16)...Drive shaft (72)...・Oil supply hole

Claims (1)

[Claims] The bottom rollers of the draft device are made independent in units of one or two spindles, and the bottom rollers are driven by a common drive shaft for all spindles, and the driving force transmission part between the drive shaft and the bottom rollers is housed in the casing. A draft device for a spinning machine, wherein the casing is provided with an oil supply hole for supplying lubricating oil from the outside to the driving force transmission section.