Electromagnetic driving apparatus for controlling weft-guide in loom

An electromagnetic drive, loom technology, applied in looms, current controllers, auxiliary equipment for weaving, etc., can solve problems such as cost increase, and achieve the effect of improving motion response

Inactive Publication Date: 2003-08-27
TOYOTA IND CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the former configuration where there are multiple attractors fixed firmly to the plunger, this former configuration involves an increase in the number of new pieces and a complex structure which can lead to increased costs
In the latter configuration, a more expensive permanent magnet is firmly fixed to the shaft, which will inevitably increase the cost

Method used

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  • Electromagnetic driving apparatus for controlling weft-guide in loom
  • Electromagnetic driving apparatus for controlling weft-guide in loom
  • Electromagnetic driving apparatus for controlling weft-guide in loom

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0034] will now refer to figure 1 A first embodiment of the present invention will be described.

[0035] Such as figure 1 As shown, the electromagnetic driving device (hereinafter referred to as "electromagnetic driving device") 11 for controlling weft insertion includes a housing 12, and the electromagnetic driving device includes a stop electromagnetic coil 13, a release electromagnetic coil 14, and a movable element 15. The housing 12 is composed of a main housing 12A formed substantially as a bottomed cylinder and a disc-shaped cover portion 12B fixed to an opening on the upper side of the main housing 12A, as as seen in the picture. The bottom 12C of the main housing 12A forms a substantially hemispherical structure.

[0036] At the center of the bottom 12C, a hole 12D is formed which vertically penetrates the bottom 12C as seen in the drawing. The hole 12D is composed of a small inner diameter portion 12E formed at the lower portion of the hole and a large inner ...

no. 2 example

[0062] The second embodiment is mainly realized by changing the configuration of the release electromagnetic coil 14 in the first embodiment. In other words, it has the same configuration as the first embodiment. Therefore, the same elements as those of the first embodiment are denoted by the same reference numerals, and descriptions of these elements are omitted.

[0063] As in the first embodiment, in Figure 2A In the shown electromagnetic drive device 11 , the number of turns of the release electromagnetic coil 14 is set to be less than the number of turns of the stop electromagnetic coil 13 . In this embodiment, the axial length of the coil frame 14A of the release electromagnetic coil 14 is set to be smaller than the axial length of the coil frame 13A of the stop electromagnetic coil 13 . That is, in this embodiment, the axial length of the release coil winding area A2 is smaller than the axial length of the blocking coil winding area A1.

[0064] In this embodiment, ...

no. 3 example

[0068] The third embodiment is achieved by changing the configuration of the release electromagnetic coil 14 in the second embodiment. In other words, it has the same configuration as the first embodiment. Therefore, the same elements as those in the second embodiment are denoted by the same reference numerals, and descriptions of these elements will be omitted.

[0069] exist Figure 2B In the electromagnetic driving device 11 shown, the number of turns of the release electromagnetic coil 14 is set to be less than that of the second embodiment. That is, in this embodiment, the releasing coil width R2 is smaller than the blocking coil width R1, and the releasing coil height L2 is smaller than the blocking coil height L1. The coil wire diameter d2 is set equal to the coil wire diameter d1.

[0070] This embodiment provides the same advantages as the above-mentioned advantages (1), (2), and (3).

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PUM

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Abstract

The electro-magnetic driving apparatus 11 for controlling wefting in weaving machine comprises a releasing solenoid 14 for driving a moving workpiece 15 to a position for allowing releasing, and a stopping solenoid 13 for driving the moving work piece 15 to a position for stopping releasing. The number of winding coils of the releasing solenoid 14 is less than that of the stopping solenoid 13. Thus, comparing the releasing solenoid 14 with the stopping solenoid 13, the elimination of remaining current in the releasing solenoid 14 can be achieved faster. Therefore, for example, it is possible to accelerate a rise-up speed of a magnetizing current in the stopping solenoid 13 and further possible to increase the rise-up speed of the magnetizing current by means of a decrease of a mutual inductance.

Description

technical field [0001] The invention relates to an electromagnetic drive for controlling weft insertion in a weaving machine, which has a movable element comprising as its part a retainer which can be in a position allowing release Switch between a blocking release position, allowing the release of the length-measured and stored weft yarn at the above-mentioned release-allowing position, and preventing the weft yarn from being released at the blocking release position. Background technique [0002] Electromagnetic drives of this type are used, for example, in Figure 3A Used in the winding type weft yarn measuring / storage device 92 shown in , the device 92 can measure the length of the weft yarn y drawn from the cheese 91 and store it. [0003] The weft yarn y wound around the yarn winding surface 93 of the weft yarn measuring / storage device 92 is pulled away from the yarn winding surface 93 by the air jet action of the weft insertion main nozzle 94 and subjected to weft ins...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D03D47/36
CPCD03D47/36D03D49/50D03J1/04D03J2700/06H02P6/28
Inventor 伊东大辅石川洋彦白木雅雄
Owner TOYOTA IND CORP
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