JP3027416U - Detecting member for needle detector - Google Patents

Abstract

(57) Abstract: [PROBLEMS] To provide a detection member for a needle-reading machine in which an iron core can be fixed in a search coil that can be wound around and retain its shape without using a frame. SOLUTION: A single search coil 1 is wound in a plurality of layers and a plurality of stages without using a frame body to form an elongated body 2 having a space 3 at a central portion in the longitudinal direction, and the entire elongated body 2 is formed. Is solidified and an iron core 5 is fitted and fixed in the space 3.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention relates to a detection member used in a needle detector.

[0002]

[Prior art]

 Sewing machine needles, hand-stitched needles, needles, dress pins (insect pins), etc. are used for various sewing products such as clothes, kimonos, futons, etc. May have been forgotten, and the broken needle may have slipped in. Wearing such clothes or sleeping on a futon could be very dangerous because needles and pins could pierce the body.

Conventionally, a sewing manufacturer inspects a finished sewn product for iron pieces such as needles and pins before adhering to the sewn product, and when the sewn product is mixed, the sewn product is in the product. I had to remove the iron pieces from the sewn products by examining them. Conventionally, an iron piece detector using a magnetic induction method has been used to detect an iron piece such as a needle or a pin, which is abbreviated as a needle detector.

The magnetic induction method for detecting an iron piece utilizes a static magnetic field by a permanent magnet and strongly reacts with an iron piece having a property of adsorbing to a magnet, which passes through a magnetic field formed by magnetic lines of force. It detects the iron core, amplifies the induced electromotive force obtained by the search coil to a certain level, and extracts it as a signal to confirm the presence of iron pieces such as needles and pins.

The iron piece detectors as described above are roughly classified into a handy type that is convenient for carrying and a large stationary type. In addition, the stationary type uses a circulatory belt conveyor to send the sewn product, which is the object to be inspected, in a certain direction, and detects the presence or absence of iron pieces through the detection section installed in the middle of the conveyor. In some cases, the sewn product is slid down along the slanted guide plate, and the presence or absence of iron pieces is detected by the detection unit installed below the guide plate.

FIG. 5 shows an example of a stationary iron piece detector that transfers a sewn product by a conventionally used belt conveyor, and is placed on an end portion of a belt conveyor A that can circulate in a certain direction. The sewn product, which is not shown in the figure, is sent in the direction of the arrow. A detection section B is provided during the transfer of the sewn product. The detection section B inspects the presence or absence of iron pieces, and when the presence of the iron pieces is detected in the sewn product, the detection display section C connected to the detection section B is displayed. The warning is given by flashing a lamp or a buzzer sound.

The detection unit B is mainly composed of a detection member and a permanent magnet, and the detection member and the magnet are installed to face each other with the conveyor A in between. The detection member has a structure in which a plurality of copper search coils that can be energized around an iron core are wound, and the search coil is connected to the detection display section C to form a detection circuit. A magnetic flux space is formed by the magnetic force lines generated between the N and S poles of the permanent magnet, and the iron core detects the change that occurs in the magnetic flux space when an iron piece enters the magnetic flux space, and extracts this as a signal from the search coil. It is a thing. Therefore, when the sewn product passes through the magnetic field formed by the magnetic lines of force, and iron pieces are mixed in the sewn product, this is detected and the display portion C notifies.

FIG. 4 and FIG. 5 show a detection member used in a conventional stationary type needle-reading machine. This detection member is a long frame a made of non-ferrous metal or synthetic resin. Are using. In this frame a, a collar piece c is symmetrically projected around both sides of an elongated body part b, and an iron core d is fitted and fixed in the center part along the length direction of the body part b. It has a shape in which a space e is formed, and the search coil f is wound in a plurality of layers and in a plurality of layers around the body b between the collar pieces c.

[0009]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The detection member used in the conventional stationary type iron piece detector described above is installed in the detection portion B in a state orthogonal to the flow direction of the sewn product. Usually, the detection width, that is, the width interval in the installation direction of the detection member is 60 cm, and the total length of the detection member has a length of 66 cm to cover this detection width. As described above, in the conventional detection member, the frame a is used to mount the iron core d and to wind the search coil f. By using the frame a, the detection member can be manufactured. Was costly and economically burdensome.

The present invention provides an inexpensive detection member in which a search coil is wound in a plurality of layers and a plurality of steps without using a frame to keep its shape constant, and an iron core can be fixed inside. That is the purpose.

[0011]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention has an elongated body 2 in which one search coil 1 is wound in a plurality of layers and a plurality of stages without using a frame body, and has a space 3 at a central portion in the longitudinal direction. The entire elongated body 2 is solidified and the iron core 5 is fitted and fixed in the space 3.

[0012]

[Embodiment of device]

 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 and 2 show the main body of the detecting member according to the present invention, which is an elongated body in which one search coil 1 is wound in a plurality of layers and a plurality of stages (the length is the same as that of a conventional detecting member). (About 66 cm) 2 and has a space 3 in which the iron core can be fitted and fixed in the central portion along the length direction. The search coil 1 includes a known hardener (for example, varnish). The heat-curable impregnating agent) is used for curing, and it is possible to maintain the desired shape as a whole.

To wind the search coil 1 in a plurality of layers and a plurality of stages, for example, as shown in FIG. 1, a basic mold 4 having the same size and shape as the iron core fitted in the space 3 is used. After the search coil 1 is wound around the basic mold 4 in a predetermined plurality of layers and a plurality of stages, the basic mold 4 is removed and a curing agent may be applied to the entire search coil 1 so that the hardener penetrates the inside. Then, after the search coil 1 is solidified and can maintain a predetermined shape, the iron core 5 is fitted into the space 3 of the elongated body 2 as shown in FIG. Use it and fix it.

[0014]

[Effect of device]

 As described above, the detection member of the present invention is the elongated body 2 having the space 3 at the center in the longitudinal direction by winding one search coil 1 in a plurality of layers and a plurality of stages without using a frame body. By forming it and solidifying the entire elongated body 3 to maintain a constant shape, and allowing the iron core 5 to be fixed in the space 3, it is possible to manufacture without requiring any extra material. Therefore, it can be provided at a low price as a whole.

[Brief description of drawings]

FIG. 1 is a perspective view of a search coil forming a detection member of the present invention.

FIG. 2 is a sectional view of a search coil in which an iron core is fitted.

FIG. 3 is a perspective view of a conventional detection member.

FIG. 4 is a sectional view of a conventional detection member.

FIG. 5 is a perspective view of a conventional stationary type meter reading machine.

[Explanation of symbols] 1 search coil 2 long body 3 space 4 basic type 5 iron core A belt conveyor B detection unit C detection display unit a frame body b body portion c collar piece d iron core e space f search coil

Claims (1)

[Scope of utility model registration request] 1. A single search coil 1 is wound into a plurality of layers and a plurality of stages without using a frame body to form a long body 2 having a space 3 at a central portion in the length direction. A detection member for a meter-reading machine, wherein the whole is solidified and an iron core 5 is fitted and fixed in the space 3.