JP2588173Y2 - Ear thread bobbin holder device for loom - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ear thread bobbin holder device for a planetary gear type ear assembly device of a loom, and more particularly to a technique for improving the durability of the device.

[0002]

2. Description of the Related Art In a conventional planetary gear type ear assembly device of a loom, for example, as shown in FIG. 10, a pair of planetary gear shafts 102 are rotatably mounted on a rotating body 101. Each of the planetary gear shafts 102 revolves as the planetary gear rotates integrally with the rotating body 101, and rotates around when the planetary gear itself is driven by the sun gear and rotates. An ear thread bobbin holder device 103 is attached to each planetary gear shaft 102.

An ear thread bobbin holder device 103 has a substantially U-shaped bobbin holder 104 fixed to a planetary gear shaft 102, and is mounted on the bobbin holder 104 with an axis arranged in a plane orthogonal to the axis of the planetary gear shaft 102. A bobbin shaft 105, an ear thread bobbin rotatably supported by the bobbin shaft 105, and an ear thread tension adjusting mechanism (a thread tension adjusting mechanism for adjusting the tension of the ear thread while restricting the feeding of the ear thread from the ear thread bobbin 106) (Not shown) and a yarn guide 107 that is fixed to the bobbin holder 104 and guides the ear thread Y drawn out from the ear thread bobbin 106 via the ear thread tension adjusting mechanism to the cloth fell F side.

In such an ear thread bobbin holder device 103, when the ear thread bobbin 106 is mounted on the bobbin holder 104, as shown in FIGS. 11 and 12, for example, the ear thread bobbin is held between a pair of side plates of the bobbin holder 104. With the bobbin shaft 105 inserted, the bobbin shaft 105 is
Bush 11 as a bearing attached to the side plate 04
1, the head hole of the bobbin shaft 5 is pressed using a stopper 112 so that the shaft hole of the ear thread bobbin 106 penetrates and the bobbin shaft 105 does not come out of the bobbin holder 104. Here, the stopper 112
Is made of a spring material, a base end portion of which is rotatably attached to a pin 104a fixed to the bobbin holder 104, an intermediate portion is guided by a guide 104b, and a cross portion 105a of a head portion of the bobbin shaft 105 is formed at a distal end portion. (See Japanese Utility Model Laid-Open No. 63-30364).

[0005]

In the above-described ear thread bobbin holder device, the bush 111 for supporting the bobbin shaft 105 has a high durability as disclosed in Japanese Patent Publication No. 60-24211. Therefore, the bobbin holder 104 is fixedly mounted by being press-fitted into mounting holes formed in each of a pair of side plates of the bobbin holder 104.

Incidentally, in the ear thread bobbin holder device 103, as described above, each planetary gear shaft 102
Is such that the planetary gears revolve integrally with the rotating body 101 and revolve, while the planetary gears themselves rotate by being driven and rotated by the sun gear, so that when the driving speed of the loom is increased, Is an ear thread bobbin holder device 103
Swing at high speed.

For this reason, a strong impact is applied to the bearing portion between the bobbin shaft 105 and the bush 111, and the bearing portion is worn. When the bearing portion progresses, the vibration of the ear thread bobbin 106 increases, and the ear thread breaks or the like. It is easy to occur. As a result, in the conventional configuration, it is impossible to replace only the bush 111, so that the entire bobbin holder 104 must be replaced with a new one, and this replacement needs to be performed frequently, which is disadvantageous in cost. Met.

The present invention has been made in view of the above, and has as its object to improve the durability of the device as much as possible by improving the structure of bushes provided on a pair of side plates of a bobbin holder. .

[0009]

For this reason, the ear thread bobbin holder device of the loom of the present invention is provided with a bobbin holder integrally mounted on a planetary gear that revolves while rotating and a bush provided on a pair of side plates of the bobbin holder. And a bobbin shaft that is removably inserted into and fixed to one end of these bushes from one end, rotatably supports the ear thread bobbin, and has a head at the other end. The bush provided on the side plate includes a resin forming portion and a wear-resistant member forming portion provided on the inner peripheral surface of the bobbin shaft bearing hole of the resin forming portion.

[0010]

When the driving speed of the loom is increased, the ear thread bobbin holder swings at a high speed, and a strong impact is applied to the bearing portion between the bobbin shaft and the bush. However, the holder formed of resin is attached to the side plate of the bobbin holder. Since the resin is applied to the bearing portion between the bobbin shaft and the bush to reduce the impact due to being attached, the contact portion with the bobbin shaft is a wear-resistant member forming portion. This can be suppressed as much as possible, and the frequency of replacing the bobbin holder with a new one can be reduced, which is advantageous in cost.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded view of one embodiment of an ear thread bobbin holder device according to the present invention, FIG. 2 is a side view of an assembled state of the device (excluding a bobbin), and FIG. 4 is a view as viewed from the direction of the arrow B in FIG. 2, FIG. 5 is a view as viewed from the direction of the arrow C in FIG.
FIG. 4 is a schematic view of an ear thread tension adjusting mechanism.

1 to 6, a bobbin holder 1 forming a main body of an ear thread bobbin holder device has a bottom plate 1a.
Is aligned with the end (flange) of the planetary gear shaft S and fixed with screws 3. The bobbin holder 1 is made of a plate material having a thickness of about 0.8 mm and is integrally formed in a box shape by drawing.
A pair of side plates 1b, 1b connected to the bottom plate 1a and a back plate 1c connected to the bottom plate 1a and the side plates 1b, 1b are integrally formed. The opposite side of the back plate 1c is also integrally formed by drawing. However, since it is on the side where the ear thread bobbin 9 is put in and taken out, the opening 4 is largely cut out by post-processing, and the rib 1d is left in a U-shape. It is.

Mounting holes 5 are formed in the pair of side plates 1b of the bobbin holder 1, and bushings 6A and 6B are mounted in these mounting holes 5 respectively. A bobbin shaft 7 is inserted into the bush 6A, 6B from the end of the bush 6A from the bush 6A side.
When the tip of the head reaches the bush 6B, the base head 8
Is locked to the bush 6A.

The bobbin shaft 7 rotatably supports the ear thread bobbin 9 previously inserted into the bobbin holder 1 through the opening 4. On one side of the ear thread bobbin 9, a ratchet wheel 10 is formed integrally therewith. The head 8 of the bobbin shaft 7 is held down by a stopper 12 that is rotatable around a pin 11 fixed to one side plate 1b of the bobbin holder 1 and is prevented from falling off.

Next, the detailed structure of the bushes 6A, 6B, the bobbin shaft 7, and the stopper 12 will be described with reference to FIGS. The bushes 6A, 6B include holders 6a, 6b as resin forming portions, respectively. Each of the holders 6a and 6b protrudes from the center of a mounting surface (outer surface) of the bobbin holder 1 on the inner surface of the side plate 1b.
And a boss portion 13 fitted into the mounting hole 5 of the boss portion 13.
A plurality of screws 14 protruding from the mounting surface around the
Is inserted. Therefore, each holder 6a, 6b
Into the side plate 1b of the bobbin holder 1, and
3 is fitted into the mounting hole 5 of the side plate 1b, the screw 14 is inserted into the insertion hole 15 of the side plate 1b, and a nut 16 is screwed into the end of the screw 14 from the outside, so that each of the holders 6a,
6b is detachably fixed to the bobbin holder 1.

A bearing hole into which the bobbin shaft 7 is inserted is formed at the center of the boss portion 13 of each of the holders 6a and 6b. The bearing hole is formed with a wear-resistant member (for example, stainless steel, ceramic or the like). Bearing 17 is inserted. Also, on the inner surface of each holder 6a, 6b,
A guide piece 18 for guiding the ear thread bobbin 9 when the ear thread bobbin 9 is mounted is formed to project in a substantially U-shape.

A projection 19 surrounding the bearing 17 is formed at the center of the boss 13 on the outer surface of the holder 6a of the one bush 6A, and a hexagonal hole is located at the center of the projection 19 at the entrance side of the bearing 17. 20 are formed (see FIGS. 3 and 7). Further, a flat portion 21 is formed on a part of the outer periphery of the protruding portion 19 (see FIGS. 2 and 7).

The bobbin shaft 7 is made of resin, and its head 8 is formed in a hexagonal shape. The hexagonal head 8 fits into a hexagonal hole 20 of the bush 6A, thereby preventing the bobbin shaft 7 from rotating. A hemispherical concave groove 22 is formed at the center of the end face of the head 8 of the bobbin shaft 7.

The stopper 12 is made of a metal leaf spring, and has a hole 23 at the base end side into which the pin 11 is inserted. The head 8 of the bobbin shaft 7 is provided on one end side.
A rising portion 24 is formed by bending outward to form the handle portion and a handle portion, and the side plate 1 of the bobbin holder 1 on the outer side of the protruding portion 19 of the bush 6A is formed on the other side.
(b) A falling portion 25 is formed as an engaging portion which is bent inward to be engaged with the flat portion 21 as a side surface of the bush 6A located on the outer surface side. Further, a hemispherical projection 26 corresponding to the concave portion 22 is formed on a plate surface for holding the end surface of the head 8 of the bobbin shaft 7 (see FIG. 9).

Next, an ear thread tension adjusting mechanism provided in the ear thread bobbin holder device will be described. A mounting shaft 27 is fixed between the side plates 1b, 1b of the bobbin holder 1 so as to be parallel to the bobbin shaft 7. A cylinder 28 formed by rolling a plate material is rotatably mounted on the mounting shaft 27 via bushes 29 press-fitted at both ends thereof.
On this cylinder 28, a pawl 30 facing the ratchet wheel 10 of the ear thread bobbin 9 and a passive arm 31 are integrally formed.

The passive arm 31 has an ear thread bobbin 1
An ear thread guide 32 made of ceramic for guiding the ear thread Y drawn from 0 is fixedly attached. Here, the passive arm 31 is urged in the clockwise direction in FIG. 6 by the tension of the ear thread Y passed through the ear thread guide 32, whereby the pawl 30 that rotates integrally with the passive arm 31 is moved to the ratchet wheel 10. And restricts the rotation of the ear thread bobbin 9 in the ear thread payout direction.

A tension sensing arm 33 is rotatably mounted on the mounting shaft 27. The tension sensing arm 33 is fixed to the mounting shaft 27 via bushes 34, 34 so as to be rotatably fitted to the mounting shaft 27, a projection 36 projecting from the boss 35, and the projection 36. A pin 37 and a rod 38 attached via the pin 37. A ceramic ear thread guide 39 is integrally formed at the tip of the rod 38.

Then, the coil spring 40 is acted on the pin 37 of the tension sensing arm 33 to move the tension sensing arm 33 to the position shown in FIG.
Is biased clockwise. When the tension sensing arm 33 rotates counterclockwise in FIG. 6 against the urging force of the coil spring 40, at this time, a part of the projection 36
1, the pawl 30 which rotates integrally with the passive arm 31 is disengaged from the ratchet wheel 10 and the ear thread bobbin 9
Can be rotated in the ear thread feeding direction.

The mounting structure of the coil spring 40 will be described.
Is attached, and the hook 41 is hooked on the pin 37 of the tension sensing arm 33. The other end of the coil spring 40 is attached to a locking portion 43 of a spring retainer 42 fixed to the outside of the back plate 1c of the bobbin holder 1 so as to be adjustable.

The fixing structure of the spring retainer 42 in which the position of the spring retainer 42 can be adjusted will be described.
Two rows of slits 44 and 45 are formed in c. still,
Continuous irregularities are formed on the edge of the slit 45, and can be used as a scale. The spring retainer 42 has a ridge 46 fitted to one slit 44 and a rectangular projection 4 fitted to the other slit 45.
7 are formed, and the positions thereof can be adjusted along the slits 44 and 45. And the spring retainer 42
The screw 49 is inserted into the insertion hole 48 of the above, the end of the screw 49 is passed through the slit 45, and screwed into the screw hole 51 of the nut 50 applied to the inside of the back plate 1c, thereby fixing the spring retainer 42. I do. The nut 50 is formed by embossing a screw hole 51 in a rectangular plate, and a notch 52 is formed on one side thereof.
The engagement of the projection 47 of the spring retainer 42 with 2 prevents rotation of the nut 50.

The ear thread bobbin holder device is also fixedly provided with a yarn guide 53 for leading the ear thread to the cloth fell side. That is, the yarn guide 5 having a substantially L-shape
3 is provided, one end of which is fixed to the side plate 1 b of the bobbin holder 1 by a screw 54 and a nut 55. A ceramic ear thread guide 56 is fixedly attached to the other end of the yarn guide 53.

Here, the ear thread Y pulled out from the ear thread bobbin 9 passes through the peripheral face of the cylinder 28, passes through the ear thread guide 32 of the passive arm 31, and then tensions, as shown in FIG. It is guided and reversed by the ear thread guide 39 of the sensing arm 33 and is led out to the cloth fell through the ear thread guide 56 of the yarn guide 53. Therefore, the tension sensing arm 33 receives the tension of the ear thread Y guided by the ear thread guide 39, and this tension increases,
6 counterclockwise in FIG. 6 against the urging force of the coil spring 40. At this time, a part of the protruding piece 36 abuts the passive arm 31 and is entrained therewith, and is integrated with the passive arm 31. Is released from the ratchet wheel 10 to enable the rotation of the ear thread bobbin 9 in the ear thread feeding direction.

Next, the operation will be described. The method of attaching the ear thread bobbin 9 to the bobbin holder 1 will be described. The ear thread bobbin 9 is inserted through the opening 4 between the pair of side plates 1b, 1b of the bobbin holder 1. At this time, both ends of the ear thread bobbin 9 are guided by the guide pieces 18 on the inner surface of the bushes 6A, 6B, and the shaft hole of the ear thread bobbin 9 is inserted into the bush 6A, 6B.
It is easy to match with the bearings 17 of 6B.

Next, the bobbin shaft 7 is inserted into the bearing 17 of one bush 6A, and the bobbin shaft 7 is inserted through the shaft hole of the ear thread bobbin 9 to the bearing 17 of the other bush 6B. At this time, the hexagonal head 8 of the bobbin shaft 7 is engaged with the hexagonal hole 20 of the bush 6A to prevent rotation. Such rotation of the bobbin shaft 7 prevents wear of the bobbin shaft 7 due to sliding contact with the bushes 6A and 6B, and improves durability.

Next, the rising portion (handle) of the stopper 12
The stopper 12 is rotated around the pin 11 with the hand 24. Then, the stopper 12 rides on the end face of the head 8 of the bobbin shaft 7 by the rising portion 24. Then, the falling portion 54 is locked to the flat portion 21 on the outer periphery of the projecting portion 19 of the bush 6A, and further rotation is restricted, and at this time, the convex portion 26 of the stopper 12 is And the stopper 12 is prevented from coming off. In this state, the stopper 12 presses the end face of the head 8 of the bobbin shaft 7 by the restoring force caused by the elastic deformation of the stopper 12 to prevent the bobbin shaft 7 from coming off, and the fitting between the protrusion 26 and the concave groove 22. (Click action)
Thus, the stopper 12 is prevented from coming off.

Since the ear thread bobbin 9 is mounted as described above, the ear thread Y from the ear thread bobbin 9 may be passed as shown in FIG. The operation of the ear thread tension adjusting mechanism will be described. If the ear thread Y is pulled from the yarn guide 53 side as the weaving progresses and the tension of the ear thread Y increases, the tension sensing arm 33 that receives the tension of the ear thread Y becomes 6 rotates counterclockwise in FIG. 6 against the coil spring 40, and when the tension exceeds a predetermined value, a part of the protruding piece 36 of the tension sensing arm 33 becomes a passive arm 31.
It is brought in contact with Then, due to the rotation of the passive arm 31, the pawl 30 which rotates integrally with the passive arm 31 is detached from the ratchet wheel 10, and the restriction on the ear thread bobbin 9 is released. As a result, the ear thread bobbin 9 rotates to feed out the ear thread Y,
Relax the tension of the ear thread Y. When the tension of the ear thread Y is reduced in this manner, the tension sensing arm 33 is moved by the coil spring 40
As a result, the passive arm 31 returns, the pawl 30 engages with the ratchet wheel 10, and regulates the rotation of the ear thread bobbin 9 again. By repeating such an operation, the tension of the ear thread Y is maintained in a certain range.

According to the ear thread bobbin holder device having such a configuration, the bushes 6A and 6B are formed on the resin forming portions (holders 6a and 6b) attached to the side plate 1b of the bobbin holder 1 and on the inner peripheral surface of the bearing hole formed in the resin forming portion. Since it is configured with the wear-resistant member forming portion (bearing 17) to be mounted, there are the following advantages. That is, when the driving speed of the loom is increased, the ear thread bobbin holder device also oscillates at a high speed,
A strong impact is applied to the bearing portion between the bobbin shaft 7 and the bushes 6A, 6B.
a, 6b is attached to the side plate 1b of the bobbin holder 1 so that the resin is applied to the bobbin shaft 7 and the bush 6A,
Since the impact applied to the bearing portion with the bearing 6B is reduced, the wear of the bearing portion can be suppressed as much as possible, and the frequency of replacing the entire bobbin holder 1 with a new one can be reduced, which is advantageous in cost.

In particular, according to the above embodiment, the bush 6
Since A and 6B are configured to be detachable from the bobbin holder 1, if the bearing 17 wears, only the bushes 6A and 6B need to be replaced, and the entire bobbin holder 1 needs to be replaced with a new one. There is no. In the above embodiment, a plurality of screws 14 are inserted into the holders 6a, 6b of the bushes 6A, 6B, the screws 14 are inserted into the through holes 15 of the side plate 1b, and a nut 16 is attached to the end of the screw 14 from the outside. The holders 6a and 6b are detachably fixed to the bobbin holder 1 by screwing. However, a plurality of shafts are protruded from the holders 6a and 6b, and the shafts are connected to the side plate 1b.
The holders 6a and 6b may be fixed to the bobbin holder 1 by inserting the shaft portion from the outside by ultrasonic welding. In this case, if the ultrasonic welding portion is cut off, the holders 6a and 6b can be removed from the bobbin holder 1, and the bushes 6A and 6B can be replaced.

As described above, the present invention has been described with reference to the specific embodiment. However, the present invention is not limited to this, and is attached to the present invention by a person skilled in the art. It should be noted that various changes and modifications can be made without departing from the scope of the utility model registration claims.

[0035]

As described above, in the present invention, in the ear thread bobbin holder device of the loom, the bush provided on the pair of side plates of the bobbin holder and into which the bobbin shaft for rotatably supporting the ear thread bobbin is inserted is inserted into the bobbin holder. And a wear-resistant member forming portion attached to the inner peripheral surface of the bobbin shaft bearing hole formed in the resin forming portion. The part that contacts the bobbin shaft is a wear-resistant member forming part in addition to alleviating the impact applied to the bearing part, so wear of the bearing part can be suppressed as much as possible and the durability of the bobbin shaft is maximized. The practical effect is large, which is advantageous in terms of cost.

[Brief description of the drawings]

FIG. 1 is an exploded view of one embodiment of an ear thread bobbin holder device according to the present invention.

FIG. 2 is a side view of an assembled state of the embodiment device (excluding a bobbin).

FIG. 3 is a view taken in the direction of arrow A in FIG. 2;

FIG. 4 is a view taken in the direction of arrow B in FIG. 2;

FIG. 5 is a view taken in the direction of arrow C in FIG. 2;

FIG. 6 is a schematic diagram of an ear thread tension adjusting mechanism.

FIG. 7 is a view showing one bush in the embodiment, (A) is a left side view, (B) is a front sectional view, and (C) is a right side view.

FIG. 8 is a view showing the other bush in the embodiment, (A) is a left side view, (B) is a front sectional view, and (C) is a right side view.

FIG. 9 is a view showing a stopper in the embodiment.
(A) is a top view, (B) is a plan view, (C) is a bottom view

FIG. 10 is an overall view of an ear assembly device showing a conventional example.

FIG. 11 is a side view of an ear thread bobbin holder device showing a conventional example.

12 is a view taken in the direction of arrow A in FIG.

[Explanation of symbols]

 Reference Signs List 1 bobbin holder 1b side plate 6A, 6B bush 6a, 6b holder (resin forming part) 7 bobbin shaft 9 ear thread bobbin 17 bearing (wear resistant member forming part)

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-321082 (JP, A) JP-B-60-24211 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) D03C 7/08 D03D 47/40

Claims (1)

(57) [Scope of request for utility model registration] 1. A bobbin holder integrally mounted on a planetary gear that revolves while revolving, a bush provided on a pair of side plates of the bobbin holder, and an ear thread bobbin removably inserted and fixed from one end to the bush. A rotatable bobbin shaft having a head at the other end, the bush provided on the side plate being formed by a resin forming portion and a bobbin shaft bearing of the resin forming portion. An ear thread bobbin holder device for a loom, comprising: a wear-resistant member forming portion provided on an inner peripheral surface of the hole.