WO2014019230A1

WO2014019230A1 - Device for marking and for detecting depleted state of bobbin thread in sewing machine

Info

Publication number: WO2014019230A1
Application number: PCT/CN2012/079675
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: 2012-08-03
Filing date: 2012-08-03
Publication date: 2014-02-06

Abstract

Disclosed is a device for marking and for detecting the depleted state of bobbin thread in a sewing machine. The device principally comprises a marking device (40) and a detecting device (50), wherein the marking device coordinates with the use of a reel of thread (20), a bobbin thread winding mechanism (30) and a bobbin case (60) of the sewing machine. An optical mark is provided on a specific section of bobbin thread, providing a checking measure to warn a user to add bobbin thread in time prior to bobbin thread being used up, achieving the goal of improving industrial efficiency.

Description

Marking and consumption state inspection device for sewing machine bottom line

The present invention relates to a sewing machine, and more particularly to a device for marking and inspecting the state of consumption of a sewing thread and a method for marking the same. Background technique

The stitch of the lockstitch sewing machine is sewn by a line and a bottom line 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 bottom line of the sewing machine The length is limited by the installation space, so 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 used in a shackle inside or below the machine table, and is twisted by the rotating shackle to prevent the soft bottom line from falling. The operator needs to set the bottom line according to the specific dressing method to make it smooth. The bobbin feed 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 to provide Replacing the time margin of the bottom thread, it is too time consuming to avoid the bottom line reloading.

In order to improve the above problems, there is currently a solution for measuring the remaining line length by measuring the length of the suture consumption, as in U.S. Patent No. 6,012,405, or U.S. Patent Nos. 4,635,216 and 4,330. No. 094 uses the measurement of the amount of movement or the amount of rotation of the object, that is, the measurement of the object or the suture itself driven by the suture to obtain the suture consumption; however, the tension of the suture is measured. The effect is 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 operation is reduced, the beam is penetrated and sensed by an optical sensor to achieve the purpose of detecting the consumption state of the bottom line; but this method not only fails to effectively solve the aforementioned measurement accuracy problem, but needs to be in the sewing machine. The peripheral side of the bobbin forms a rather complicated structure.

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 is only detected. It can be used by an operator who has the above-mentioned special winding bottom line, and is difficult to be used by an operator who generally rewinds the bobbin on the bobbin. In addition, as shown in FIG. 1 of the present invention, the specific length of the inner thread of the bobbin 10a is wound around a standard bobbin 11 in the interior of the standard bobbin 11 as shown in FIG. On the small bobbin 12, when the bottom line 10 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 outer bobbin 11 When a signal is stopped, a signal is output to achieve the purpose of detecting the consumption state of the bottom line.

In addition, in recent years, a related company 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 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. The method of Fig. 1 detects the state of consumption of the bottom line, whereby the inventor of the present invention further proposes U.S. Patent No. 5,570,646, which is provided with a disk member 13 at one end of a threadless bottom thread 10b. The needle 13 is inserted into the needle-shaped body 131 of the wire roll to form a target for detection, and the wire is consumed until the needle body 131 is exposed and separated from the bottom line 10b. When the coil is wound, the disc 13 will stop rotating and output a signal for the optical sensor to form a warning.

However, the above two detection methods still have inconvenience in practical operation, and the bottom wire 10a, 10b wire coil needs to be matched with a specific device such as the bobbin 12 or the disk member 13 and the optical sensor to achieve the purpose of detecting the side. Moreover, 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, and there is room for further improvement. Summary of the invention

It is an object of the present invention to provide an indication and inspection device for a sewing thread consumption state, which is mainly provided with an optical mark on a specific line segment of a bottom line and is detected by the optical mark to reach a warning user. Instantly replenish the bottom line before the bottom line is exhausted to improve work efficiency

In order to achieve the above object, a marking and consumption state inspection device for a sewing machine bottom line according to the present invention includes a marking device and an inspection device for cooperating with a sewing thread and a bottom thread winding mechanism. And a shuttle device; wherein: the marking device is disposed between the suture thread of the sewing machine and the bottom thread winding mechanism, the marking device has a clamp, the clamp has a spiral arm and a fixed arm, The spiral arm has opposite ends, one end is connected with a power source, and the other end is opposite to the fixed arm, and two carriers impregnated with photoexcited chemical materials are disposed, from the suture line a line segment outputted to the bottom wire winding mechanism is interposed between the two carriers, and the carrier of the clamp arm is the power source control and the fixed arm carrier is clamped to the line segment, and the photoexcited chemical material is transferred to the line segment The line segment forms an optical mark, and the stitch line segment provided with the optical mark is defined as a bottom line; the inspection device has a light wave output unit and an optical sensor, and the test device is disposed corresponding to the shuttle of the sewing machine, The bottom line is disposed in the shuttle, and an outlet hole of the shuttle is located within the illumination and sensing range of the inspection device, and the stitch line segment provided with the optical mark passes through the shuttle to enter the range, The optical mark is configured to illuminate the light wave output unit to form the light excitation light, and according to the present invention, the marking and consumption state inspection device of the sewing machine bottom line includes a marking device and an inspection device. For use with a sewing machine and a shuttleless bottom thread; wherein: the shuttleless bottom thread is formed into a coil structure and has a shaft hole, the shaft hole is the shuttleless bottom The first line segment is formed by winding; the marking device has a carrier formed into a cylindrical shape, and the carrier is impregnated with a photoexcited chemical material, so that the shuttleless core bottom hole is sleeved outside the carrier, and the photoexcited chemical material is transferred to The wire-breaking bottom line is formed as an optical mark of the line segment of the shaft hole; the inspection device has a light wave output unit and an optical sensor, and the inspection device is disposed corresponding to the shuttle of the sewing machine, and the The shuttleless bottom line of the optical mark is disposed inside the shuttle, and an outlet hole of the shuttle is located within the illumination and sensing range of the inspection device, and the shuttleless bottom line segment of the optical mark is provided from the shuttle When the cymbal penetrates into the range, the optical mark is illuminated by the light wave output unit to form photoexcited light for detection by the optical sensor.

The present invention has been described in detail with reference to the accompanying drawings in which the preferred embodiments thereof DRAWINGS

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 view of the bottom line marking device of U.S. Patent No. 5,078,331.

Figure 3 Schematic diagram of the overall structure of the sewing machine and its bottom line detection device.

4A, 4B are schematic views showing the use state of the marking device structure including the bobbin thread winding.

Fig. 5 is a schematic view showing the detecting device of the bottom thread of the present invention.

Figure 6 is a schematic illustration of another marking device for marking a bobbin-free bottom thread. detailed description First, with reference to FIG. 3 in conjunction with FIG. 4A, FIG. 4B, FIG. 3, the present invention provides a preferred embodiment of the marking and consumption state inspection device for the bottom line of the sewing machine. As shown in FIG. 3, the sewing machine mainly has a sewing machine head A. The sewing machine head A is provided with a sewing thread reel 20, a bottom thread winding mechanism 30 and a bur A1, and a marking device 40 is disposed on the suture thread winding 20 to output to the bottom thread winding. The position between the mechanisms 30, the machine B is provided with an inspection device 50 and a shuttle 60 corresponding to the position of the needle A1, wherein:

As shown in FIG. 4A and FIG. 4B, the marking device 40 is disposed between the suture thread reel 20 and the bottom thread winding mechanism 30. The marking device 40 has a clamp 41 having a spiral arm 41 1 and a The fixed arm 412 has two opposite ends, one end is coupled to a power source 43. The power source 43 is a stepping motor, and the other end is opposite to the fixed arm 412 and is provided with a light-exciting chemical material. The carrier 42 is disposed between the two carriers 42 for outputting from the suture coil 20 to the bottom wire winding mechanism 30, and the carrier 42 of the clamp 41 of the clamp 41 is controlled by the power source 43. The optical fiber symmetry is transferred to the line segment 21 to form an optical mark, and the stitch line segment 21 having the optical mark is defined as a bottom line 210;

In the present embodiment, the marking device 40 is provided with two guiding members 46 on opposite sides of the clamp 41, and each of the guiding members 46 is formed as a through hole 461 corresponding to one end of the carrier 42 to make the suture coil 20 The line segment 21 is disposed through the two through holes 461 to sandwich the two carriers 42, and the marking device 40 is provided with a wire unit 47 for guiding the output of the thread of the suture thread roll 20 to the bottom wire winding mechanism 30;

In addition, the power source 43 of the indicator device 40 is also a solenoid valve or a pneumatic valve, and the power source 43 is electrically connected to the arm 41 1 of the clamp 41, and electromagnetically or pneumatically controls the rotation of the clamp 41. The arm 41 1 is clamped to the fixed arm 412 at a preset time point, so that the two carriers 42 are brought into contact with the line segment 21 of the thread suture coil 20;

As shown in FIGS. 3 and 5, the inspection device 50 mainly has a light wave output unit 51 and an optical sensor 52. The inspection device 50 can be a transceiver, and the inspection device 50 corresponds to a sewing machine. The shuttle 60 is disposed. The shuttle 60 has a housing 61 and an inner casing 62. The housing 61 is integrally formed with a bobbin 61 1 for inserting a shaft hole 31 1 of the bobbin 31. The bobbin 31 is rotatably disposed in the shuttle 60, and the inner casing 62 is formed with a wire hole 621; thereby, as shown in FIG. 3, the bottom thread 210 is disposed in the shuttle 60, and the shuttle 60 is located In the illumination and sensing range of the marking device 40, when the bottom line 210 passes through the shuttle 60 to enter the range, the optical mark emits the light excitation light to the light output unit 51.

In the present embodiment, the photoexcited chemical material is impregnated in the liquid resin In the carrier 42, when the two carriers 42 are sandwiched, the optical mark is formed on the line segment 21 by dip dyeing or coating, and the carrier 42 is an object such as sponge or cloth to which the liquid resin is adsorbed.

The above description 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, the following description will be made.

The present invention is mainly for repeatedly winding the suture thread winding 20 line segment 21 onto the bobbin 31 for use in the winding operation for the bottom thread 210, and exciting the impregnated light through the carrier 42 of the marking device 40. The chemical material is transferred to the bottom line 210 to form an optical mark that is invisible to the naked eye. After the light wave output unit 51 of the testing device 50 is irradiated with light of a specific wavelength, the optical mark is emitted and can be detected by the optical sensor 52. The light illuminates the light, so that as soon as the optical mark on the bottom line 210 enters the illumination and sensing range of the inspection device 50, the warning signal that the bottom line is about to be exhausted can be detected and the operator is alerted to The signal takes the next step to achieve the purpose of reducing the operation time of the bottom winding operation.

In addition, since the bobbin-free bottom line 70 is in operation and use, it is more convenient than the bottom line 210 that can be used after the winding bobbin 31 is required. Therefore, the present invention is used to refer to the optical mark as shown in FIG. An embodiment of the marking device 40 is indicated in a shuttleless heartline 70; wherein: the shuttleless heartline 70 is formed as a coiled structure and has a shaft hole 71 which is defined by the shuttleless bottom thread 70 One of the line segments is formed by winding; the marking device 40 has a carrier 45 formed in a cylindrical shape, and the carrier 45 is impregnated with a photoexcited chemical material, and the shaft hole 71 of the shuttleless bottom line 70 is sleeved outside the carrier 45. The light-exciting chemical material is transferred to the wire-free bottom line 70 to form an optical mark for the line segment of the shaft hole 71. In the embodiment, the carrier 45 of the marking device 40 is formed with a set of holes 451 for the sleeve. The shaft 44 of the base 44 is used; the inspection device 50 has the light wave output unit 51 and the optical sensor 52 in the same manner as the foregoing embodiment, and is disposed at the outlet hole 621 of the shuttle 60 for detecting The Bobbin bottom line on the optical record number of 70, to be detected and outputs the bottom line expiring warning signal to remind the purpose of operating personnel.

In summary, the present invention has indeed met the requirements of the invention patent, and has filed a patent application according to law. However, the above description is only a preferred embodiment of the present invention, and the scope of the patent application of the present invention cannot be limited thereto. Equivalent modifications or variations made by those skilled in the art in light of the spirit of the invention are intended to be included within the scope of the appended claims. List of reference numerals Bottom line 10a bobbin 11 bobbin 12 bottom line 10b outer peripheral surface 101 shaft hole 102 disk member 13 needle body 131

Sewing machine head A bur machine A1 machine table B

Suture thread roll 20 line segment 21 bottom line 210

Bottom thread winding mechanism 30 bobbin 31 shaft hole 311

Marking device 40 Fixture 41 Arm 411 Fixing arm 412 Carrier 42 Power source 43 Base 44 Shaft 441 Carrier 45 Hole 451 Guide 46 Perforation 461 Conductor unit 47

Inspection device 50 Light wave output unit 51 Optical sensor 52

Shuttle 60

Bobbin spindle 611 inner shell 62 outlet hole 621

Shuttleless bottom line 70 shaft hole 71

Claims

Rights request

A marking and consumption state inspection device for a sewing machine bottom line, comprising: a marking device and an inspection device for cooperating with a sewing thread of a sewing machine, a bottom winding mechanism and a shuttle; wherein:

The marking device is disposed between the suture thread of the sewing machine and the bottom thread winding mechanism, the marking device has a clamp, the clamp has a spiral arm and a fixed arm, the spiral arm has opposite ends, one end Connected to a power source, and the other end is opposite to the fixed arm, and the two carriers impregnated with the photoexcited chemical material are disposed, so that a line segment from the stitching wire to the bottom wire winding mechanism is interposed between the two carriers. And the carrier of the clamp arm is the power source control and the fixed arm carrier is clamped to the line segment, and the photoexcited chemical material is transferred to the line segment to form an optical mark, and the stitch line segment with the optical mark is defined as one Bottom line

The inspection device has a light wave output unit and an optical sensor, the inspection device is disposed corresponding to the shuttle of the sewing machine, the bottom line is disposed in the shuttle, and an outlet hole of the shuttle is located in the inspection device In the illumination and sensing range, when the bottom line passes through the outlet hole and enters the range, the optical mark emits light excitation light for the optical wave output unit to be detected by the optical sensor.

2. The marking and consumption state inspection device for a sewing machine bottom thread according to claim 1, wherein the marking device is provided with two guiding members on opposite sides of the clamp, and each of the guiding members corresponds to one end of the carrier. The perforation is such that the suture line winding section passes through the two perforations to sandwich the two carriers.

The marking and consumption state inspection device for a sewing machine bottom thread according to claim 1, wherein the marking device is provided with a wire unit for guiding the output of the suture wire winding segment to the bottom wire winding mechanism.

4. The marking and consumption state inspection device of the sewing machine bottom line according to claim 1, wherein the power source of the marking device is a solenoid valve, and the electromagnetic valve is electrically connected to the clamp and electromagnetically controls the fixture to be preset. The line point of the line stitching is clamped at the time point.

5. The marking and consumption state inspection device for a sewing machine bottom thread according to claim 1, wherein the power source of the marking device is a pneumatic valve, the pneumatic valve is electrically connected to the clamp and the clamp is pneumatically controlled at a preset. The line point of the line stitching is clamped at the time point.

6. The marking and consumption state inspection device for a sewing machine bottom thread according to claim 1, wherein the photoexcited chemical material is impregnated or coated on the bottom line by being dissolved in a liquid resin.

7. The marking and consumption state inspection device for a sewing machine bottom thread according to claim 1, wherein the carrier is sponge or cloth.

8. A marking and consumption state inspection device for a sewing machine bottom line, comprising a marking device and an inspection device for use with a shuttle and a shuttleless bottom thread of a sewing machine; wherein: the shuttleless bottom thread is formed as a coil structure and having a shaft hole, the shaft hole is formed by winding a line segment of the shuttleless bottom line;

The marking device has a carrier formed into a cylindrical shape, the carrier is impregnated with a photoexcited chemical material, and the bobbinous core bottom hole is sleeved outside the carrier, and the photoexcited chemical material is transferred to the shuttleless bottom line to form The line segment of the shaft hole forms an optical mark;

The inspection device has a light wave output unit and an optical sensor, and the inspection device is disposed corresponding to the shuttle of the sewing machine, so that the shuttleless bottom line provided with the optical mark is disposed inside the shuttle, and the shuttle An outlet hole of the cymbal is located within the illumination and sensing range of the inspection device, and the optical symbol is provided by the optical wave output unit when the bobbin-free bottom line segment provided with the optical mark passes through the shuttle. The light is excited to be detected by the optical sensor.

9. The marking and consumption state inspection device for a sewing machine bottom thread according to claim 8, wherein the carrier of the marking device is used on a base, the base is formed with a shaft, and the carrier is formed with a set of holes. The sleeve is placed outside the base shaft.

10. The marking and consumption state inspection device for a sewing machine bottom thread according to claim 8, wherein the photoexcited chemical material is impregnated or coated on the bottom line by being dissolved in a liquid resin.

11. The marking and consumption state inspection device for a sewing machine bottom thread according to claim 8, wherein the carrier is sponge or cloth.