WO2016019571A1

WO2016019571A1 - Apparatus for checking consumption state of bobbin thread of sewing machine

Info

Publication number: WO2016019571A1
Application number: PCT/CN2014/083979
Authority: WO
Inventors: 马柯佛·杰可福; 马尔斯巴·可恰哇; 沙德亚可福
Original assignee: 欧利速精密工业股份有限公司
Priority date: 2014-08-08
Filing date: 2014-08-08
Publication date: 2016-02-11

Abstract

An apparatus for checking the consumption state of a bobbin thread (10a, 10b) of a sewing machine. Conducting resin is coated in advance on a thread section that indicates that a yarn coil such as a winding bobbin (20) or a bobbinless yarn coil (50) is to be used up, so as to form a conducting thread section whose electric conductivity is measured by a detection apparatus (30); and the change of the electric conductivity warns a user to supplement a yarn in real time before a yarn (22, 51) is used up, so as to achieve the objective of improving the operation efficiency.

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. Background technique

The stitch of the lockst itch sewing machine is sewn by a line and a bottom line which are positioned on the upper and lower sides of the object to be sewn, wherein the bottom line 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 a shuttlecock installed in the lower or lower side of the machine, and is twisted by the rotating shuttle to prevent the soft bottom thread from falling. 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 rather 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. Provides a time margin for replacing the bottom thread, avoiding the time-consuming swapping of the bottom thread.

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 in U.S. Patent No. 6, 012, 405, or U.S. Patents 4, 635, 216 and 4, 330, 094 The concept of measuring the amount of movement or the amount of rotation of the object, that is, measuring the object or the stitch itself driven by the suture to obtain the amount of suture consumption; however, the tension of the suture affects the measurement result. Very large, and the longer the sewing thread, the less accurate the measurement result, resulting in the above method showing the problem of inaccurate measurement.

U.S. Patent Nos. 4,214,542 and 4,825,789, the disclosure of each of each of each of each of each of each of each of each of each of When the reduction is made, the beam is penetrated and sensed by an optical sensor to achieve the purpose of detecting the consumption state of the bottom line; however, this method not only fails to effectively solve the aforementioned measurement accuracy problem, but needs to be in the bobbin circumference of the sewing machine. The sides form a rather complicated structure.

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

In addition, as in the prior art, U.S. Patent No. 5,078,331, the disclosure of which is incorporated herein by reference. It is shown that it winds a specific length of the inner thread of the bobbin 10a around a small bobbin 12 that is placed inside the standard bobbin 11, whereby when the bobbin 10a is used for the specific length, the outer bobbin 11 is formed. When the rotation of the internal bobbin 12 is stopped, the optical sensor outputs a signal when detecting that the external bobbin 11 stops rotating, so as to detect the consumption state of the bottom line.

In recent years, a related manufacturer has provided a pre-bending bobbin 10b, which is mainly shown in Fig. 2, which mainly applies a low-viscosity adhesive which does not cure the suture to the bottom thread 10b. The outer peripheral surface 101 and the hole wall of the shaft hole 102 are fixed in a roll so that the bottom line 10b is fixed in a roll, which is welcomed by the user because the operation of repeatedly winding the bottom line around the bobbin can be omitted; however, the aforementioned bobbin-free bottom line 10b cannot be used in FIG. The method detects the state of consumption of the bottom line, and the inventor of the present invention further proposes a US Patent No. 5, 570, 646, which is provided with a disk member 13 at one end of a threadless bottom thread 10b coil, which is transmitted through the disk member 13 The needle-shaped body 131 inserted into the wire roll is formed on the contact surface of the shuttleless bottom line 10b to form a target for detection. When the thread of the bottom line 10b is consumed until the needle body 131 is exposed and is separated from the bottom line 10b. The disk member 13 will stop rotating and output a signal for the optical sensor detection to form an alert.

Many of the above detection methods are achieved by optical detection, and there are still inconveniences in actual operation, and not only the bottom line 10a, 10b coils need to be matched with a specific device such as the bobbin 12 or the disc member 13 and the optical sensor. 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 consumption state of the bottom line is not effectively solved, and the improvement is actually improved. Space. Summary of the invention

The technical problem to be solved by 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 that is about to be used up, forming a The conductive line segment for measuring the conductivity of the detecting device is used to alert the user to replenish the yarn in real time before the yarn is used to improve the working efficiency.

In order to solve the above technical problem, the present invention provides a sewing machine bottom line consumption state inspection device, the sewing machine having a needle plate and a shuttlecock disposed at the bottom of the needle plate, the needle plate having a pinhole, and the shuttlecock The needle hole is provided with a perforation; wherein 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 the one end of the thread is combined with the bobbin Winding on the bobbin, the other end of the wire is continuously consumed for the sewing operation, and the yarn is coated with a conductive resin on a line segment adjacent to the bobbin wire end via a marking device, and is defined to be coated with a conductive resin. The yarn segment is a conductive segment, uncoated conductive resin The 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 on the needle plate centered on the pinhole, The conductive ring member has a through hole and is disposed in the insertion opening of the insulating ring member, and the amplifier is electrically connected to the two electrical contacts disposed on the conductive ring member and the shuttle. An electric resistor is electrically connected between the amplifier and the electrical contact of the conductive ring member, and the resistor is electrically connected to a voltage source; the yarn is inserted through the puncture hole and the pinhole and the conductive ring member The insertion opening of the detecting device determines the consumption state of the winding bobbin yarn by the conductivity measured when the conductive segment or the insulated segment of the yarn contacts the conductive ring member.

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 bobbin. The marking device includes a substrate disposed between the stitching wire and the winding bobbin; a clamp having a fixed arm, a rotating arm and a power source, the power source is provided On the substrate, one end of the fixed arm is fixed on the substrate, and the other end is provided with an impregnated carrier. One end of the rotating arm is connected to the power source and is provided on the substrate with a rotating capability. The other end of the arm 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, and the clamp passes The power source controls the rotating arm to be clamped or separated at a preset time point, so that 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 Forming the insulation of the yarn Section.

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, so that the shuttle-free yarn rolling strip hole is sleeved outside the impregnated carrier, and the conductive resin is applied to the shuttleless yarn The shaft hole of the roll is walled, and the yarn segments constituting the shaft hole are formed into the conductive line segments.

Regarding the techniques, means, and other effects employed by the present invention to achieve the above objectives, The preferred embodiments are described in detail with reference to the accompanying drawings. DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described in detail with reference to the accompanying drawings and specific embodiments. Fig. 1 is a schematic diagram of a 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 state of use of the marking device for marking the bobbin of the present invention.

Figure 5 is a schematic view showing the structure of the structure of the marking device for marking a bobbin-free yarn roll. detailed description

Referring to Figures 3 to 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 having a pinhole Al1, and The shuttle cymbal A2 is provided with a through hole A21 corresponding to the pinhole A11. 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 defines a segment of the yarn coated with the conductive resin. For a conductive segment, 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 A1. The conductive ring member 32 has a through opening 321 and a pinch hole Al1 disposed in the insertion port of the insulating ring member 31. 311, the amplifier 33 is electrically connected to the two electrical contacts P1, P2 of 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 perforation A2 and the pinhole A1 to be in contact with the insertion opening 321 of the conductive ring member 32. The amplifier 33 of the detecting device 30 is electrically conductive through the yarn 22. The conductivity measured when the line segment or the insulated 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 Peg 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, and The amplifier 33 is electrically connected, and the amplifier 33 detects the magnitude of the current flowing through the resistor 34. When the current occurs, the input voltage value of the amplifier 33 decreases, which means that the yarn segment of the coating resin has been reached. .

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 are electrically conductive, so that the yarn 22, the conductive ring member 32 and the shuttle 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, in order to facilitate the user to replace the winding bobbin 20 in real time, to achieve the purpose of increasing the smoothness and efficiency of the operation. As shown in FIG. 4A and FIG. 4B, when the winding bobbin 20 is used as the bottom line source, the yarn 22 is outputted by a suture thread winding B and wound around the bobbin 21 to constitute the winding bobbin 20. The marking device 40 is disposed between the suture thread winding B and 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 clamp 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 is provided with the rotating capability on the substrate 401. And the other end of the swivel 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. After the time, the power source 43 electrically controls the clamp 402 to loosen the yarn to reach a partial The purpose of coating the conductive resin on the fixed yarn segment. Alternatively, the starting point and the end point of the coating line segment may be preset on the yarn line. After the starting point reaches the position of the clamp 402, the control jig 402 clamps the yarn, starts coating the conductive resin to the yarn, and arrives at the end point. After the position of the clamp 402, the control jig 402 releases the yarn to apply a conductive resin on 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, the guide member 402 is provided with a guiding member 46 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. The wire 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. Section 51 is a conductive segment, and the segment 51 of the uncoated conductive resin 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 a immersion carrier 63 formed in a cylindrical shape and having a set of holes 631. Outside the shaft 62, the impregnated carrier 63 is impregnated with a conductive resin, and the shaft-free bobbin 50 shaft 52 is placed outside the impregnated carrier 63 to apply a conductive resin to the bobbin-free yarn roll. The shaft hole 52 of the hole 52 is 50, and the yarn 51 segment 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 shaft A22 for inserting a shaft hole 211 of the bobbin 21 of the winding bobbin 20, or for inserting the shaft hole of the bobbin-free yarn roll 50. 52, in which the winding bobbin 20 or the bobbinless yarn reel 50 is stabilized to rotate the output yarns 22, 51 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 or cloth which is easy to absorb and impregnate the liquid resin. Made up of materials.

The present invention has been described in detail by way of specific embodiments and examples, but these are not intended to limit the invention. Technology in the field without departing from the principles of the invention A number of variations and modifications can also be made by personnel, and these should also be considered as a list of reference numerals for the scope of protection of the present invention.

Bottom line 10a bobbin 11

Spool 12 bottom line 10b

Outer peripheral surface 101 shaft hole 102

Plate 13 needle body 131

Needle plate A1 pinhole Al l

Pillow A2 perforation A21

Positioning axis A22 winding bobbin 20 bobbin 21

Shaft hole 211 yarn 22

Testing device 30 Insulation ring 31

Insert port 311 conductive ring member 32

Through the mouth 321 amplifier 33

Message 331 Resistor 34

Voltage source 35 Electrical contacts Pl, P2

Grounding A23, 332, 351 Resistance Rc

Marking device 40

401

Fixture 402: Arm 41

Rotating arm 42 power source 43

Impregnated carrier 44 impregnated carrier 45

Guide member 46 perforated 461

Rotary decoder 47

Shuttleless yarn roll 50 yarn 51

Shaft hole 52

Marking device 60 base 61

Shaft 62 impregnated carrier 63

Claims

Rights request

A sewing machine bottom line consumption state inspection device, the sewing machine having a needle plate and a shuttlecock disposed at a bottom of the needle plate, the needle plate having a pinhole, and the shuttle hole is provided with a perforation corresponding to the pinhole; The utility model is characterized in that: 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 one end of the thread is combined with the bobbin and wound on the bobbin, and the other end is used for sewing work Consuming, 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, and the yarn not coated with the conductive resin is Insulated line segment;

a detecting device having an insulating ring member, a conductive ring member and an amplifier, the insulating ring member having an insertion opening disposed on the needle plate centered on the pinhole, the conductive ring member having a through opening And the pinhole is disposed in the insertion opening of the insulating ring member, the amplifier is electrically connected to the two electrical contacts disposed on the conductive ring member and the shuttle, and the amplifier and the conductive ring member are electrically connected A resistor is electrically connected between the contact points P, and the resistor is electrically connected to a voltage source;

The yarn passes 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 conducts electricity when the conductive segment or the insulated segment of the yarn contacts the conductive ring member. Rate, judge the consumption state of the bobbin yarn.

The sewing machine bottom line consumption state inspection device according to claim 1, wherein the conductive resin is composed of a conductive chemical material dissolved in a liquid resin.

3 . The sewing machine bottom line consumption state inspection device according to claim 1 , wherein the yarn is outputted by a suture thread and wound around a bobbin to form the winding bobbin, and the marking device is disposed on the suture thread and the thread. The winding bobbin; characterized in that the marking device comprises:

a substrate disposed between the thread of the suture and the bobbin of the winding;

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 slidably disposed on the substrate, and the other end of the rotating arm is provided with another impregnated carrier, and the two impregnated carriers are impregnated with a conductive resin;

The yarn is output from the suture thread and then wound to the bobbin through the clamp, and the clamp controls the rotary arm to be clamped or separated at a preset time by the power source, so that the two impregnated carrier clips The conductive resin is applied to the yarn to form the conductive segment, or the two impregnated carriers are separated to form an insulated segment of the yarn.

The sewing machine bottom line consumption state inspection device according to claim 3, wherein the impregnated carrier is sponge or cloth.

The apparatus for inspecting the bottom line consumption state of the sewing machine according to claim 3, wherein a guiding member is disposed on each of opposite sides of the clamp of the marking device, 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.

6 . The sewing machine bottom line consumption state inspection device according to claim 3 , wherein: the marking device has a rotary decoder disposed on the substrate and located between the clamp and the winding bobbin; The yarn is guided to the bobbin for winding work.

The sewing machine bottom line consumption state inspection device according to claim 3, wherein the power source of the marking device is a solenoid valve or a pneumatic valve.

8. A sewing machine bottom line consumption state inspection device, the sewing machine having a needle plate and a shuttlecock disposed at a bottom of the needle plate, the needle plate having a pinhole, and the shuttle hole is provided with a perforation corresponding to the pinhole; The utility model is characterized in that: the sewing machine bottom line consumption state inspection device comprises:

a bobbin-free yarn roll, which is wound and formed by a yarn and has a shaft hole, the shaft hole wall is coated with a conductive resin via a marking device, and the yarn segment coated with the conductive resin is defined as a conductive line segment. The yarn segment not coated with the conductive resin is an insulated line segment;

The yarn passes 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 conducts electricity when the conductive segment or the insulated segment of the yarn contacts the conductive ring member. Rate, the consumption state of the yarn without the bobbin yarn is judged.

The sewing machine bottom line consumption state inspection device according to claim 8, 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 And a set of hole sleeves is disposed outside the shaft, the impregnated carrier is impregnated with a conductive resin, so that the shuttle-free yarn rolling strip hole is sleeved outside the impregnated carrier, and the conductive resin is applied to the shuttleless yarn. The shaft hole wall of the coil is formed, and the yarn segments constituting the shaft hole are formed into the conductive line segment.

10. The sewing machine bottom line consumption state inspection device according to claim 8, 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 9, wherein the impregnation carrier is sponge or cloth.