JPS603570Y2 - Transformer for water jet trom heat cutter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a transformer for obtaining electric power to be supplied to heat a heat cutter used in a water jet loom.

The heat cutter used in the water jet loom is used to cut the weft thread carried by the water jet into the warp shed into an appropriate length from the edge of the cloth after the weft thread has been beaten.

Moreover, since it is a water jet loom, the weft yarn to be cut is naturally grooved, and the heat cutter is used in an atmosphere where the water jetted is suspended in the form of mist.

For this reason, the heat cutter needs to be made larger and have a larger heat capacity in order to prevent a drop in temperature when cutting wet weft yarns.

Naturally, with this increase in size, the power to be supplied to it must also be large.

There are various types of high power, but low voltage and high current are used in consideration of human safety and leakage due to water exposure.

In order to effectively supply such power to the heat cutter without loss, it is necessary to minimize the contact resistance at the terminal portion and the internal resistance of the lead wire itself.

Conventionally, as a solution to these problems, it has been considered to place the transformer as close as possible to the heat cutter.

However, if the heat cutter is brought close to the heat cutter, it will be exposed to the above-mentioned splashing water, so complete waterproofing is required, so a waterproof transformer has been used.

However, since this transformer is a waterproof transformer that waterproofs both the negative and secondary windings, not only can the transformer not have connection terminals, but the transformation rate is also constant, so a single I could only do something functional.

However, since various types of yarn are used in the textile industry, it is necessary to select a cutting temperature that is appropriate for each yarn.

However, in the conventional case, since the transformation ratio is constant as described above, it is difficult to appropriately select the necessary output.

As a solution to this problem, it would be possible to create transformers with different transformer ratios by changing the number of turns of the winding, but this was not a perfect solution as the loom manufacturers still had the problem of having many types of transformers.

In this invention, only the primary winding with a large number of turns is wound around the transformer core, and only this part is sealed and waterproof together with the core to create a transformer.When installing this transformer in a water jet room, a heat cutter is used. The number of connection terminals can be reduced by installing the heat cutter nearby, determining the secondary winding each time according to the yarn type, and winding it on site.In addition, the lead wire to the heat cutter itself can also be used as the secondary winding. This is because the length of the lead wire itself can be shortened.

An embodiment of the present invention will be described below with reference to the drawings.

A primary winding 2 is dividedly wound a predetermined number of times around a cut core type iron core 1, and a leader wire 3 is brought out.

This lead wire 3 is connected to a power source (not shown).

- Both the iron core 1 around which the secondary winding 2 is wound and the primary winding 2 are sealed with a waterproof and insulating synthetic resin filler 5 filled in a case 4.

The case 4 is installed at an appropriate position on the loom frame or the like using a hole made in the case.

- After winding the cutter lead wire 8 with the crimp terminal 7 having mounting holes on both ends crimped and fixed around the core part exposed from the filling material of the case 4 a predetermined number of times, the heat cutter 9 is attached to the terminal 7.
Fix it with screw 10.

As an example of the number of windings of the -next and secondary windings, the number of turns of the -next winding is 754, while the number of turns of the cutter lead wire, which is the secondary winding, is about 3 to 7 depending on the yarn type.

With the above transformer, the negative winding is completely waterproof, so it can be installed near the heat cutter where there is splashing water, the length of the cutter lead wire can be shortened, and the secondary winding can be installed near the cutter. Since it also serves as a lead wire, the connection terminal can now be used only for the connection to the heat cutter.

As a result, the internal resistance of the lead wire can be reduced, contact resistance at the terminal, oxidation and electrical corrosion of the terminal due to splashed water are eliminated, and power can be supplied without loss, allowing the heat cutter to disconnect. The temperature became stable and the problem of poor weft cutting was solved.

Furthermore, since the cutter lead wire can be easily wound a predetermined number of times each time, a heat cutter that can obtain a cutting temperature suitable for the yarn can be obtained at a low cost.

[Brief explanation of the drawing]

The drawing is a perspective view showing an embodiment of the present invention, and a partially transparent view. 1...Iron core, 2...-Next winding, 4...
·····Case. 8...Cutter lead wire, 9...Heat cutter.

Claims (1)

[Scope of utility model registration request] In the water jet loom, the primary winding of a heat cutter transformer is wound around an iron core, and this secondary winding is sealed with a waterproof and insulating filler, while the winding is exposed from the filler. A transformer for a heat cutter in a water jet loom, in which a heat cutter lead wire is wound around the iron core a predetermined number of times, and a heat cutter is connected to both ends of the lead wire.