JPH0530060Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention is a bobbin that is used for spinning, twisting, and other yarn products, and is designed to easily balance rotation so that it can withstand high-speed rotation. It is related to the device.

[Conventional technology]

Metal flange bobbins, which are used in general spinning such as spinning, twisting, diameter adjustment, fiber preparation, and other processes for winding thin wire, are manufactured into desired shapes by die-casting, casting, forging, press assembly, etc. A synthetic resin bushing is fitted into the hole into which the spindle of the bobbin is inserted and fixed with adhesive.

Further, the rotation of the bobbin is balanced so that it rotates smoothly without vibration even during high-speed rotation, and this is achieved by providing a recess or hole in the collar.

[Problem to be solved by the invention] It is simple to balance the rotation by making a recess or hole in the flange of the bobbin. However, the dents and holes formed in the flange may reduce the strength of the flange,
Alternatively, during high-speed rotation, these depressions or holes create air resistance, resulting in energy loss and noise. Furthermore, there is a drawback that the hole becomes clogged with lint and the like, causing an imbalance.

In view of this, it is an object of the present invention to form a perforation for balance without impairing the strength of the bobbin and without opening the outer surface of the bobbin.

[Means to solve the problem]

The present invention was made to achieve the above-mentioned object, and is inserted from both ends of the bobbin into a hole drilled along the bobbin axis in the thick boss part of a synthetic resin bushing with thick ends. The gist is that a weight balanced with the balance of the bobbin is fitted, and a seal plug is fitted on the open end side of the hole so as to be flush with the button.

〔Example〕

The bobbin of the present invention will be explained below based on the illustrated embodiments.

In the figure, reference numeral 1 denotes a bobbin body made of aluminum, aluminum alloy, other desired metals, or synthetic resin. Flanges 2 and 3 are integrally formed at both ends of the bobbin body 1. A hole 4 is bored therein into which a spindle (not shown) is inserted. And this bobbin body 1 hole 4
Cylindrical bushes 5 and 6 made of synthetic resin are inserted into the bobbin from both ends of the bobbin body and adhered to the inner peripheral surface of the hole, and the inner ends of the bushes are fitted into each other, and this fitted part is are also glued together to integrate both the bushes 5, 6 and the bobbin body 1.

Next, rotate this bobbin and check the rotational balance with a balancer. If the rotational balance is not uniform, place the thick boss part of the bush 5 or 6 on the less balanced side in the bobbin circumferential direction parallel to the bobbin axis. Drill the hole 51 or 61 with a drill etc.
A weight 7 is inserted into this hole 51, and a synthetic resin seal plug 8 is stuffed into the opening of the hole 51 so that the rotational balance of the bobbin is made uniform.

Therefore, if the balancer detects that the rotational balance is out of balance due to manufacturing errors in the bobbin, one or more holes 51 or 61 are drilled in the thick boss part of the bush 5 or 6 based on the detected value. perforate. Then, a weight 7 corresponding to this value is inserted, and this weight 7 is made of a metal with a heavy specific gravity, such as lead, and is shaped like a sphere, a pellet, or a rod, and is used according to the value of the imbalance.

Note that the hole 51 is sealed with a plug 8, which prevents the weight 7 from coming off while the bobbin is in use, and
The hole 51 is completely closed, thereby preventing wind damage due to air resistance and suppressing noise generation.

After balancing the bobbin in this way,
As shown in the figure, a pin engagement hole 52 is bored at a different position from the hole 51 for transmitting the rotational torque that rotates the bobbin fitted to the spindle at a required number of rotations. Note that the seal plug 8 is of a strong fit type and its outer surface is flush with the end surface of the bush 5, but in this case it is also possible to bond it for a stronger fit.

[Effect of idea]

The balance device in the bobbin of this invention is inserted from both ends of the bobbin, and a weight that balances the bobbin is inserted into a hole drilled along the bobbin axis in the thick boss part of a synthetic resin bushing with thick ends. However, since the seal plug is fitted flush to the open end of the hole, it is possible to maintain balance without compromising the strength of the bobbin flange, and there is no open surface on the outside. Therefore, it has the advantage of not generating windage energy or noise during high-speed rotation.

[Brief explanation of the drawing]

FIG. 1 is a sectional view, and FIG. 2 is a side view. 1 is the bobbin body, 2 and 3 are the tsuba, 4 is the hole, 5 and 6
is a bush, 51 is a hole, 7 is a weight, and 8 is a seal.

Claims (1)

[Scope of utility model registration request] A weight that balances the balance of the bobbin is inserted into a hole drilled along the bobbin axis in the thick boss part of the synthetic resin bushing, which is inserted from both ends of the bobbin and has a thick end. A balance device for a bobbin in which a seal plug is fitted flush against the bobbin.