TW201606156A - Device for checking the consumption state of bottom line of sewing machine - Google Patents

Abstract

A device for checking the consumption state of bottom line of sewing machine, a conducting resin is predeterminedly coated on a line segment being running out, so as to form a conducting line segment for the checking device to measure the conductivity, thus warning the user the yarn is run out via the conductivity changes.

Description

Sewing machine bottom line consumption state inspection device

The present invention relates to a sewing machine, and more particularly to a device for checking the state of consumption of a thread of a sewing machine.

Pressing, the stitch of the lockstitch sewing machine is made by sewing one of the upper and lower threads on the upper and lower sides of the object to be sewn, wherein the bottom thread is set in a roll to set the inside of the sewing machine table, due to the winding bottom line The length of the line is limited by the installation space. Therefore, the frequency of the bottom line is quite high. When the replacement work is carried out, not only the sewing work needs to be interrupted, but also the bottom line needs to be re-wound on the bobbin after the bottom line is used up. It is placed in the inside of the machine table or in the bottom of one of the shuttlecocks. In order to prevent the soft bottom thread from falling, it is twisted by the rotating shuttle. The operator needs to set the bottom line according to the specific dressing method to make it smooth. The sewing thread is combined with the upper thread to form a suture mesh, so the replacement method of the bottom thread is quite cumbersome and time consuming, which is not conducive to the efficiency of the sewing operation, and it is necessary to remind the operator when the bottom line has a certain length remaining to provide Replacing the timeline of the bottom thread to avoid the time-consuming rework of the bottom line.

In order to improve the above problems, there is currently a solution to measure the remaining line length by measuring the length of the suture consumption by U.S. Patent No. 6,012,405, or U.S. Patent No. 4,635,216 and No. 4,330,094 measures the concept of the amount of movement or the amount of rotation of the object, that is, the object that the suture drives the rotation or the suture itself is measured to obtain the amount of suture consumption; however, the tension of the suture is measured. The result is very influential, and the longer the sewing thread, the less accurate the measurement result, resulting in the inaccuracy of the above method.

U.S. Patent Nos. 4,214,542 and 4,825,789 each disclose an optical measuring method in which a light beam is used to illuminate a winding bottom line inside the bobbin. When the thickness of the lower thread winding is reduced with the sewing operation, the light beam is obtained. Penetration and sensing by an optical sensor achieve the purpose of detecting the consumption state of the bottom line; however, this method not only fails to effectively solve the above-mentioned measurement accuracy problem, but needs to form a rather complicated structure on the peripheral side of the bobbin of the sewing machine. .

Therefore, U.S. Patent No. 5,211,121, by means of a specific bottom-winding method, revolves the bottom thread on the bobbin, so that the bobbin thread is detected when the bobbin is about to run out, but the method can only be detected. The above-mentioned special winding bottom line is used by an operator, and it is difficult to be used by an operator who generally rewinds the bottom thread around the bobbin.

In addition, U.S. Patent No. 5,078,331, which is hereby incorporated by reference in its entirety, is hereby incorporated herein by reference in its entirety, the entire length of the inner thread of the bottom thread 10a is wound around a small spool that is placed inside the standard bobbin 11. 12, whereby when the bottom line 10a is used for the specific length, the state in which the outer bobbin 11 stops rotating but the inner bobbin 12 is rotated is formed, for an optical sensor to detect the stop of the outer bobbin 11 A signal is output when rotating, and the purpose of detecting the consumption state of the bottom line is achieved.

Moreover, in recent years, a related manufacturer has provided a pre-boiled bottom wire 10b (pre-boiled bottom wire 10b), as shown in Fig. 2, which mainly applies a low-viscosity adhesive which does not cure the stitching to the bottom line 10b. The outer peripheral surface 101 of the roll and the hole wall of the shaft hole 102 are fixed in a roll so that the bottom line 10b is fixed. The user can be omitted from the operation of repeatedly winding the bottom thread around the bobbin; however, the aforementioned bobbin-free bottom line 10b cannot detect the bottom line consumption state by the method of the first figure, whereby the inventor of the present invention proposes another beauty. Patent No. 5,570,646, which is provided with a disk member 13 at one end of a bobbin-free bottom thread 10b, and a plurality of needle-like bodies 131 inserted into the wire roll are formed on the contact surface of the disk member 13 and the bobbin-free bottom thread 10b. To form a target for detection, when the bottom line 10b is consumed until the needle 131 is exposed and off the bottom line 10b, the disk 13 will stop rotating and output a signal for optical sensor detection. Form a warning.

However, the foregoing various detection methods are all achieved by optical detection, and there are still inconveniences in actual operation, and not only the bottom line 10a, 10b coil needs to be matched with the bobbin 12 or the disc member 13 and the optical sensor. Only when a specific device can achieve the purpose of detecting the side, and the accuracy of the detection depends on whether the operator can accurately set the bobbin 12 or the disk member 13, so that the problem of detecting the state of consumption of the bottom line is not effectively solved. There is room for further improvement.

An object of the present invention is to provide a sewing machine bottom line consumption state inspection device which is pre-coated with a conductive resin on a line segment such as a bobbin bobbin or a bobbin-free yarn roll which is about to be used up to form a detectable device. Conductive line segments are measured for electrical conductivity, and the change in conductivity is used to alert the user to immediately replenish the yarn before use to improve work efficiency.

In order to achieve the above object, the present invention provides a sewing machine bottom line consumption state inspection device, wherein the sewing machine has a needle plate and a shuttlecock disposed at the bottom of the needle plate, the needle plate has a pinhole, and the needle plate has a pinhole. The shuttle has a perforation corresponding to the pinhole; wherein the sewing machine bottom line consumption state inspection device comprises: a winding bobbin having a bobbin and a yarn, the yarn having two a wire end, wherein one wire end is combined with the bobbin and wound on the bobbin, and the other wire end is continuously consumed for performing a sewing operation, and the yarn is adjacent to a line segment connecting the bobbin wire end via a marking device Coating the conductive resin, defining a yarn segment coated with the conductive resin as a conductive segment, the uncoated conductive resin yarn is an insulated segment; a detecting device having an insulating ring member, a conductive ring member and a An amplifier, the insulating ring member has an insertion opening, the pinhole is centered on the needle plate, and the conductive ring member has a through hole and the pinhole is disposed in the insulating ring member. In the mouth, the amplifier is electrically connected to the two electrical contacts of the conductive ring member and the shuttle, and a resistor is electrically connected between the amplifier and the electrical contact of the conductive ring. The resistor is electrically connected to a voltage source; the yarn is passed through the puncture perforation and the pinhole to be in contact with the through opening of the conductive ring member, and the amplifier of the detecting device passes through the conductive segment or the insulated segment of the yarn The conductivity measured when the conductive ring member is in contact, and the winding is judged Bobbin of yarn consumption state.

In the sewing machine bottom line consumption state inspection device of the present invention, the yarn is wound by a suture thread and wound around a bobbin to form the bobbin, and the marking device is disposed on the suture thread and the winding. Between the bobbins; wherein the marking device comprises a substrate disposed between the suture winding and the winding bobbin; a clamp having a fixed arm, a rotating arm and a power source, the power source Provided on the substrate, one end of the fixing arm is fixed on the substrate, and an impregnated carrier is disposed at the other end. One end of the rotating arm is coupled to the power source and is provided on the substrate with a rotating capability. The other end of the boom is provided with another impregnated carrier corresponding to the fixed arm, and the two impregnated carrier is impregnated with the conductive resin; the yarn is output from the suture thread and then wound to the bobbin through the clamp to perform the winding operation. Controlling, by the power source, the rotating arm is clamped or separated at a preset time point, the two impregnated carriers are sandwiched to apply a conductive resin to the yarn to form the conductive line segment, or the two impregnated carriers are separated And forming an insulated segment of the yarn.

In addition, in the sewing machine bottom line consumption state inspection device of the present invention, the yarn may also be derived from a bobbin-free yarn reel, wherein the bobbin-free yarn reel is wound by a yarn and has a shaft hole, the shaft hole The wall of the hole is coated with a conductive resin via a marking device, and the yarn segment coated with the conductive resin is defined as a conductive segment, and the segment of the uncoated conductive resin is an insulated segment, thereby being connected to the winding bobbin. Having the yarn pass through the puncture perforation and the pinhole to contact the opening of the conductive ring member, the amplifier of the detecting device being measured by the conductive segment or the insulated segment of the yarn contacting the conductive ring member Conductivity, the state of consumption of the shuttleless yarn winding yarn is judged.

Moreover, when the yarn is from a bobbin-free yarn roll, the marking device is composed of a base, a shaft disposed on the base, and an impregnated carrier, wherein the impregnated carrier is formed into a cylindrical shape. Having a set of hole sleeves disposed outside the shaft, the impregnated carrier is impregnated with a conductive resin, and the core of the bobbin-free yarn reel is placed outside the impregnated carrier to apply a conductive resin to the bobbin-free yarn roll The shaft hole wall is formed, and the yarn segments constituting the shaft hole are formed into the conductive line segment.

The preferred embodiments of the present invention, as well as the accompanying drawings, are set forth in the accompanying drawings.

[study]

10a‧‧‧ bottom line

11‧‧‧

12‧‧‧ spool

10b‧‧‧ bottom line

101‧‧‧ outer perimeter

102‧‧‧Axis hole

13‧‧‧Distribution

131‧‧‧ needles

〔this invention〕

A1‧‧‧ needle board

A11‧‧‧ pinhole

A2‧‧‧ Shuttle

A21‧‧‧Perforation

A22‧‧‧ Positioning axis

B‧‧‧Sewing thread

20‧‧‧ Winding bobbin

21‧‧‧ Heart

211‧‧‧ shaft hole

22‧‧‧Yarn

30‧‧‧Detection device

31‧‧‧Insulation ring

311‧‧‧ embedded port

32‧‧‧Electrical ring parts

321‧‧‧ wearing a mouth

33‧‧‧Amplifier

331‧‧‧Information

34‧‧‧Resistors

35‧‧‧voltage source

P1, P2‧‧‧ electrical contacts

A23, 332, 351‧‧‧ Grounding

Rc‧‧‧resistance

40‧‧‧Marking device

401‧‧‧Substrate

402‧‧‧Clamp

41‧‧‧Fixed Arm

42‧‧‧Rotating arm

43‧‧‧Power source

44‧‧‧ impregnated carrier

45‧‧‧Immersion carrier

46‧‧‧ Guides

461‧‧‧Perforation

47‧‧‧Rotary decoder

50‧‧‧No spindle yarn roll

51‧‧‧Yarn

52‧‧‧Axis hole

60‧‧‧ marking device

61‧‧‧ Pedestal

62‧‧‧ shaft

63‧‧‧Immersion carrier

Figure 1 is a schematic illustration of the bottom line marking device of U.S. Patent No. 5,570,646.

Figure 2 is a schematic illustration of the bottom line marking device of U.S. Patent No. 5,078,331.

Figure 3 is a schematic view showing the structure of the bottom line consumption state inspection device of the sewing machine of the present invention.

4A and 4B are schematic views showing the use state of the marking device for marking the bobbin of the present invention.

Fig. 5 is a schematic view showing the structure of the structure of the marking device for marking the shuttleless core yarn according to the present invention.

Referring to FIG. 3 to FIG. 5, a specific embodiment of the sewing machine bottom line consumption state inspection device of the present invention will be described.

As shown in FIG. 3, the sewing machine bottom line consumption state inspection device of the present invention has a needle plate A1 and a shuttle A2 disposed at the bottom of the needle plate A1. The needle plate A1 has a pinhole A11, and the needle plate A1 has a pinhole A11. The shuttle A2 is provided with a through hole A21 corresponding to the pinhole A11; wherein the sewing machine bottom line consumption state inspection device comprises a winding bobbin 20, a detecting device 30 and a marking device 40.

As shown in FIG. 3, the winding bobbin 20 has a bobbin 21 and a yarn 22, and the yarn 22 has a two-wire end, wherein a wire end is combined with the bobbin 21 and wound around the bobbin 21. The other end of the wire is continuously consumed for the sewing operation. The yarn 22 is coated with a conductive resin on a line segment adjacent to the wire end of the bobbin 21 via a marking device 40, and the yarn 22 coated with the conductive resin is defined. The segment is a conductive segment, and the uncoated conductive yarn 22 is an insulated segment.

As shown in FIG. 3, the detecting device 30 uses the conductivity to achieve the purpose of detection. The detecting device 30 has an insulating ring member 31, a conductive ring member 32 and an amplifier 33. The insulating ring member 31 has a mounting. The port 311 is disposed on the needle plate A1 centering on the pinhole A11. The conductive ring member 32 has a through opening 321 disposed in the insertion opening 311 of the insulating ring member 31 in correspondence with the pinhole A11. The amplifier 33 is electrically connected to the two electrical contacts P1 and P2 disposed on the conductive ring member 32 and the shuttle A2, and the electrical connection between the amplifier 33 and the electrical contact P1 of the conductive ring member 32 is further charged. Is connected to a resistor 34, the resistor 34 is electrically connected to a voltage source 35; Thereby, the yarn 22 is placed in the hole A2 of the shuttle A2 and the pinhole A11 to be in contact with the opening 321 of the conductive ring member 32. The amplifier 33 of the detecting device 30 passes through the conductive segment of the yarn 22 or The conductivity measured when the insulated wire segment is in contact with the conductive ring member 32 determines the state of consumption of the yarn 22 of the winding bobbin 20.

The above is the main components of the embodiment of the present invention and the configuration description thereof. As for the operation mode and the function of the preferred embodiment of the present invention, please refer to FIG. 4A and FIG. 4B in conjunction with FIG. 3 for the following description.

As shown in FIG. 3, the shuttle cymbal A2 and the conductive ring member 32 of the present invention are members made of a conductive metal, and the conductive ring member 32 is disposed between the insulating ring member 31 and the needle plate A1. Forming an insulating relationship, and the shuttle A2, the amplifier 33, and the voltage source 35 are respectively provided with groundings A23, 332, and 351; thereby, by providing electrical contacts P1, P2 in the shuttle A2 and the conductive ring member 32, The amplifier 33 is in electrical communication with the amplifier 33 to detect the magnitude of the current flowing through the resistor 34. When the current occurs, the input voltage of the amplifier 33 decreases, which indicates that the coated resin yarn has been reached. segment.

As shown in FIG. 3, when the insulated wire segment passes through the conductive ring member 32, since the insulated wire segment has no conductivity, the measured conductivity is 0, and since no current flows through the resistor 34, the input voltage of the amplifier 33 comes from The power supply unit 35. Once the conductive segments of the yarn 22 pass through the conductive ring member 32 and are in contact therewith, the electrical contacts P1, P2 will be electrically conductive, so that the yarn 22, the conductive ring member 32 and the shuttle cymbal A2 form a closed conductive The circuit, which produces the conductivity and the resistance Rc, causes the input voltage of the amplifier 33 to drop below the power supply 35, and is detected by the amplifier 33 to form the output of the signal 331 as a warning that the yarn 22 is about to be used up. The message is to facilitate the user to instantly replace the winding bobbin 20, so as to increase the smoothness and efficiency of the operation. As shown in Figure 4A, Figure 4B When the winding bobbin 20 is used as the source of the bobbin thread, the yarn 22 is outputted by a suture coil B and wound around the bobbin 21 to form the bobbin 20, and the marking device 40 is disposed on the bobbin. The stitching wire B is interposed between the winding bobbin 20; the marking device 40 includes a substrate 401 and a clamp 402. The substrate 401 is disposed between the suture coil B and the winding bobbin 20; the fixture 402 has a fixed arm 41, a rotating arm 42 and a power source 43. The power source 43 is disposed on the On the substrate 401, one end of the fixing arm 41 is fixed on the substrate 401, and an impregnated carrier 44 is disposed at the other end. The rotating arm 422 is connected to the power source 43 and has a rotating capability on the substrate 401. And the other end of the rotating arm 42 is provided with another impregnated carrier 45, the impregnated carrier 44, 45 is impregnated with a conductive resin; in the embodiment, the power source 43 is a solenoid valve or a Pneumatic valve.

It should be noted that, in the manner in which the present invention applies the conductive resin to the specific position and length of the yarn, the control fixture 402 can be clamped by the power source 43 at a preset time point, and after a predetermined clamping time. Thereafter, the power source 43 electrically controls the jig 402 to loosen the yarn to achieve the purpose of coating the conductive resin on a portion of the specific yarn segment. Alternatively, the starting point and the end point of the coating line segment may be preset on the yarn. After the starting point reaches the position of the clamp 402, the control jig 402 clamps the yarn, starts coating the conductive resin onto the yarn, and arrives at the end point. After the position of the clamp 402, the control fixture 402 loosens the yarn to apply a conductive resin over a particular yarn segment.

Therefore, the yarn 22 is output from the suture coil B and then wound by the clamp 402 to the bobbin 21, and the clamp 402 controls the rotary arm 42 at the preset time point by the power source 43. Clipping or separating, the two impregnated carriers 44, 45 are sandwiched to apply a conductive resin to the yarn 22 to form the conductive segment, or the two impregnated carriers 44, 45 are separated to form the insulation of the yarn 22. Line segment.

Preferably, a guiding member 46 is disposed on each of the opposite sides of the clamp 402. Each of the guiding members 46 is formed with a through hole 461 corresponding to the impregnated carrier 44, 45, so that the yarn 22 passes through the two through holes 461. The impregnation carrier 44, 45 is clamped; further, the marking device 40 is disposed on the substrate 401, and a rotary decoder 47 is disposed between the clamp 402 and the winding bobbin 20 for guiding the yarn. 22 is output to the bobbin 21 for winding work.

Further, as shown in Fig. 5, the sewing machine bottom thread consumption state inspection device of the present invention can perform the sewing operation without the bobbin yarn roll 50 as the bottom line source. The bobbin-free yarn roll 50 is wound and formed by a yarn 51 and has a shaft hole 52. The hole of the shaft hole 52 is coated with a conductive resin via a marking device 60 to define a yarn coated with a conductive resin. The 51 segment is a conductive segment, and the segment 51 of the uncoated conductive resin yarn is an insulated segment.

As shown in FIG. 5, the marking device 60 has a base 61, a shaft 62 disposed on the base 61, and an impregnated carrier 63 formed into a cylindrical shape and having a set of holes 631. Placed outside the shaft 62, the impregnated carrier 63 is impregnated with a conductive resin, and the shaft-free bobbin 50 shaft hole 52 is placed outside the impregnated carrier 63 to apply a conductive resin to the shuttle-free yarn. The shaft hole 52 of the roll 50 is on the wall of the hole, and the segment of the yarn 51 constituting the shaft hole 52 is formed into the conductive line segment.

As shown in FIG. 3, the inside of the shuttle A2 has a positioning axis A22 for inserting one of the shaft holes 211 of the bobbin 21 of the winding bobbin 20 or the shaft hole 52 of the bobbinless winding 50. In order to stabilize the winding bobbin 20 or the bobbinless yarn reel 50, the output yarns 22, 51 are rotated inside the pong barch A2.

In addition, in various embodiments of the present invention, the conductive resin is composed of a conductive chemical material dissolved in a liquid resin; and the impregnated carrier 44, 45, 63 is a sponge. It is composed of a material such as cloth that easily absorbs the impregnated liquid resin.

In summary, the present invention can achieve the above-mentioned various effects through the above-mentioned sewing machine bottom line consumption state inspection device, and has already met the patent application requirements, and has filed a patent application according to law, praying for review and early granting of patents, and real feelings. Will.

A1‧‧‧ needle board

A11‧‧‧ pinhole

A2‧‧‧ Shuttle

A21‧‧‧Perforation

A22‧‧‧ Positioning axis

A23‧‧‧ Grounding

21‧‧‧ Heart

211‧‧‧ shaft hole

22‧‧‧Yarn

30‧‧‧Detection device

31‧‧‧Insulation ring

311‧‧‧ embedded port

32‧‧‧Electrical ring parts

321‧‧‧ wearing a mouth

33‧‧‧Amplifier

331‧‧‧Information

332‧‧‧ Grounding

34‧‧‧Resistors

35‧‧‧voltage source

351‧‧‧ Grounding

P1, P2‧‧‧ electrical contacts

Rc‧‧‧resistance

Claims (9)

A sewing machine bottom line consumption state inspection device, wherein the sewing machine has a needle plate and a shuttlecock disposed at the bottom of the needle plate, the needle plate has a pinhole, and the shuttle has a perforation corresponding to the pinhole; The sewing machine bottom line consumption state inspection device comprises: a winding bobbin having a bobbin and a yarn, the yarn having a two-wire end, wherein a wire end is combined with the bobbin and wound on the bobbin, and The wire end is continuously consumed for the sewing operation, and the yarn is coated with a conductive resin on a line segment adjacent to the wire end of the bobbin via a marking device, and the yarn segment coated with the conductive resin is defined as a conductive segment. The uncoated conductive resin yarn is an insulated wire segment; a detecting device having an insulating ring member, a conductive ring member and an amplifier, the insulating ring member having an insertion opening centered on the pinhole The conductive ring member has a through hole disposed in the insertion opening of the insulating ring member opposite to the pinhole, and the amplifier is electrically connected to the conductive ring member and the shuttle Electrical connection, and the amplifier and the A resistor is electrically connected between the electrical contacts of the electrical ring member, and the resistor is electrically connected to a voltage source; the yarn is inserted through the puncture hole and the pinhole to penetrate the conductive ring member In the contact contact, the amplifier of the detecting device determines the consumption state of the bobbin bobbin yarn by the conductivity measured when the conductive segment or the insulated segment of the yarn contacts the conductive ring member. The sewing machine bottom line consumption state inspection device according to claim 1, wherein the yarn is wound by a suture thread and wound around a bobbin to form the bobbin, and the marking device is disposed on the suture. Between the coil and the winding bobbin; wherein the marking device comprises: a substrate disposed between the suture thread and the winding bobbin; a fixture having a fixed arm, a rotating arm and a power source, the power source being disposed on the substrate, the fixing arm being fixed on the substrate at one end and an impregnated carrier at the other end, the rotating arm having one end The power source is arranged to be rotatably disposed on the substrate, and the other end of the rotating arm is provided with another impregnated carrier corresponding to the fixed arm, and the second impregnated carrier is impregnated with a conductive resin; After the suture thread is output, the winding is performed by the clamp to the bobbin, and the clamp controls the rotating arm to be clamped or separated at a preset time point by the power source, so that the two impregnated carriers are sandwiched to form the conductive resin. Coating to the yarn forms the conductive segment, or separating the two impregnated carriers to form an insulated segment of the yarn. The sewing machine bottom line consumption state inspection device according to the second aspect of the invention, wherein the indicator device is provided with a guiding member on opposite sides of the clamp, and each of the guiding members is formed with a perforation corresponding to the position of the impregnated carrier. The yarn is passed through the two perforations to sandwich the two impregnated carriers. The sewing machine bottom line consumption state inspection device according to claim 2, wherein the marking device has a rotary decoder disposed on the substrate and located between the clamp and the winding bobbin for guiding The yarn is output to the bobbin for winding work. The sewing machine bottom line consumption state inspection device according to the second aspect of the invention, wherein the power source of the marking device is a solenoid valve or a pneumatic valve. A sewing machine bottom line consumption state inspection device, wherein the sewing machine has a needle plate and a shuttlecock disposed at the bottom of the needle plate, the needle plate has a pinhole, and the shuttle has a perforation corresponding to the pinhole; The sewing machine bottom line consumption state inspection device comprises: a shuttleless core yarn roll formed by winding a yarn and having a shaft hole, the shaft hole wall is coated with a conductive resin via a marking device, and the coating is coated with a conductive resin. The yarn segment is a conductive segment, and the uncoated conductive yarn segment is an insulated segment; a detecting device has an insulating ring member, a conductive ring member and an amplifier, and the insulating ring member has an embedded portion The pinhole is centered on the pin plate, and the conductive ring member has a through hole disposed in the embedding port of the insulating ring member, and the amplifier is disposed on the conductive ring. The electrical connection is electrically connected to the electrical contact of the peg, and a resistor is electrically connected between the amplifier and the electrical contact of the conductive ring, and the resistor is electrically connected to a voltage source; The yarn passes through the punctuation perforation and the pinhole Penetration and ring opening contact member, by means of the detection amplifier measured when the conductive segments insulated wire or yarn in contact with the conductive ring member conductivity, determines the status of the shuttle consumed yarn core yarn. The sewing machine bottom line consumption state inspection device according to claim 6, wherein the marking device has a base, a shaft disposed on the base, and an impregnated carrier, the impregnated carrier being formed into a cylindrical shape Having a set of hole sleeves disposed outside the shaft, the impregnated carrier is impregnated with a conductive resin, and the core of the bobbin-free yarn reel is placed outside the impregnated carrier to apply a conductive resin to the bobbin-free yarn roll The shaft hole wall is formed, and the yarn segments constituting the shaft hole are formed into the conductive line segment. The sewing machine bottom line consumption state inspection device according to claim 1 or 6, wherein the conductive resin is composed of a conductive chemical material dissolved in a liquid resin. The sewing machine bottom line consumption state inspection device according to claim 2, wherein the impregnation carrier is sponge or cloth.