TWM643471U - Sewing thread supplying device with automatic cleaning function - Google Patents

Abstract

A suture supply device with an automatic cleaning function, comprising an outer kettle, an inner kettle, a bobbin, a detection unit, and a cleaning piece. The outer kettle is driven to rotate, and includes an outer kettle base wall and an outer kettle peripheral wall. The inner kettle is arranged in the outer kettle. The spool is arranged in the inner kettle and is used for supplying the lower thread. The detection unit is used to detect whether the lower thread is exhausted, and includes a transmitter located outside the peripheral wall of the outer kettle and capable of emitting a light wave, and a receiver located outside the peripheral wall of the outer kettle and capable of receiving the light wave passing through the outer kettle and the inner kettle. The cleaning element is arranged on the peripheral wall of the outer kettle and rotates with the outer kettle. When the cleaning member rotates with the outer kettle, the dander and lint attached to the transmitter and the receiver can be removed, so as to avoid the failure of the function of detecting whether the lower thread is exhausted.

Description

Suture supply device with automatic cleaning function

The present invention relates to a sewing device, in particular to a suture supply device with automatic cleaning function.

An existing lower thread supply device for a sewing machine comprises a needle bar that drives an upper thread through the cloth and can move up and down, an outer kettle that moves synchronously with the movement of the needle bar, an inner kettle that is arranged in the outer kettle and does not rotate with the outer kettle, a bobbin that is arranged in the inner kettle and is used to supply lower thread, a transmitter that is arranged outside the outer kettle and can emit a light wave, and a receiver that is arranged on the outer side of the outer kettle opposite to the transmitter and can receive the light wave. The light wave emitted by the emitter penetrates the outer kettle and the inner kettle, and is next to the bobbin. The transmitter and the receiver are used to detect whether the bobbin supplied by the bobbin is exhausted. Wherein, when the bobbin supply is sufficient, because the bobbin is wound around the bobbin, the light wave emitted by the transmitter is blocked by the bobbin, so that the receiver fails to receive the light wave, and can know that the current bobbin supply is sufficient; and when the bobbin is exhausted, the light wave emitted by the transmitter penetrates the outer kettle, the inner kettle and the bobbin, and is received by the receiver to receive the light The receiver of the wave can send a warning through a warning unit to remind the user that the offline line is exhausted.

However, this existing sewing machine tends to produce lint and lint after sewing and embroidery for a long time. These lint and lint may accumulate on the inner and outer sides of the outer kettle and the inner kettle, and attach to the transmitter and the receiver, thereby hindering the emission and reception of the light waves of the transmitter and the receiver.

Generally speaking, the user manual of the product will teach the user to regularly use a cleaning brush to clean the inner side of the outer kettle and the inner kettle, but will not clean the outer side of the outer kettle. This is because the internal structure of the existing sewing machine is compact, which makes it difficult for the user to clean the outside of the outer kettle directly with a cleaning brush, and the user may accidentally bump the transmitter or the receiver when cleaning, resulting in a malfunction of the detection function. In summary, it can be understood that although the existing lower thread supply device for sewing machines can detect whether the lower thread is exhausted, the detection function may be hindered by dander and lint and fail. To clean it, not only is it difficult to disassemble and assemble, but the user is also likely to collide with the transmitter and the receiver, which will cause the detection function to fail.

Therefore, the object of the present invention is to provide a suture supplying device with an automatic cleaning function which can effectively clean the transmitter and the receiver to avoid malfunction of the detection function.

Therefore, the novel suture supply device with automatic cleaning function is suitable for a sewing machine and includes an outer kettle, an inner kettle, a bobbin, a detection unit, and a cleaning element. The outer kettle can be driven by the sewing machine to rotate around an axis, and includes an outer kettle base wall and an outer kettle peripheral wall surrounding the outer kettle base wall. The base wall of the outer kettle and the peripheral wall of the outer kettle define an upwardly open first chamber. The inner kettle is arranged in the first chamber, and includes an inner kettle base wall, and an inner kettle peripheral wall surrounding the inner kettle base wall. The base wall of the inner kettle and the peripheral wall of the inner kettle define an upwardly open second chamber. The bobbin is arranged in the second chamber and is used for supplying the lower thread. The detection unit is used to detect the offline, and includes a transmitter located outside the peripheral wall of the outer kettle and capable of emitting a light wave toward the bobbin, and a receiver located outside the peripheral wall of the outer kettle and spaced from the transmitter. The receiver is capable of receiving the light waves passing through the outer kettle, the inner kettle and the bobbin. The cleaning element is arranged on the peripheral wall of the outer kettle and rotates with the outer kettle around the axis for cleaning the transmitter and the receiver.

The effect of the present invention is: the cleaning part is arranged on the peripheral wall of the outer pot and rotates around the axis with the outer pot, so when the cleaning part rotates with the outer pot, it can remove the dander and lint attached to the transmitter and the receiver, so as to ensure that the light wave can be normally emitted and received, and avoid the failure of the function of detecting whether the downline is exhausted.

Referring to Fig. 1 to Fig. 3, an embodiment of the suture supply device 1 with automatic cleaning function of the present invention is suitable for a sewing machine 10, and includes a mount 2, an outer kettle 3, an inner kettle 4, a bobbin 5, a detection unit 6, and a cleaning part 7.

The installation seat 2 is fixed on the sewing machine 10 and is provided for the outer kettle 3 . The installation seat 2 includes an installation base wall 21, an installation stop wall 22 connected to the installation base wall 21 and extending around the outer kettle 3, and two positioning frames 23 arranged on the installation stop wall 22 and extending along a vertical direction Z. The positioning frames 23 are spaced apart along a left-right direction X perpendicular to the up-down direction Z. Each positioning frame 23 has a positioning hole 231 penetrating along the left-right direction X.

The outer kettle 3 is arranged on the mounting base 2, and can rotate around an axis L driven by a linkage mechanism (not shown) of the sewing machine 10 in conjunction with a needle bar 101 of the sewing machine 10 moving up and down. Wherein, the outer kettle 3 rotates around the axis L relative to the mounting base 2 and the inner kettle 4 . The outer kettle 3 includes an outer kettle base wall 31, an outer kettle peripheral wall 32 surrounding the outer kettle base wall 31, a wire groove 33 formed on the outer kettle peripheral wall 32, a groove 34 formed on the outer kettle peripheral wall 32 around the axis L and spaced from the wire groove 33, and a hook tip 35 extending from the outer kettle peripheral wall 32 toward the wire groove 33 and used for pulling an upper wire (not shown). The outer kettle base wall 31 and the outer kettle peripheral wall 32 define a first chamber 36 open upward.

Referring to FIG. 2 to FIG. 4 , the inner kettle 4 is disposed in the first chamber 36 but does not rotate with the outer kettle 3 . The inner kettle 4 includes an inner kettle base wall 41, an inner kettle peripheral wall 42 surrounding the inner kettle base wall 41, a first window 43 formed on the inner kettle peripheral wall 42, and a second window 44 formed on the inner kettle peripheral wall 42 spaced from the first window 43. The base wall 41 of the inner kettle and the peripheral wall 42 of the inner kettle define a second chamber 45 that is open upward. The first window 43 and the second window 44 respectively communicate with the respective positioning holes 231 of the positioning frames 23 . When the outer pot 3 rotates around the axis L, the first window 43 can correspond to one of the wire slot 33 or the groove 34 , and the second window 44 can correspond to the other one of the wire slot 33 or the groove 34 .

Referring to FIG. 3 , FIG. 5 and FIG. 6 , the bobbin 5 is disposed in the second chamber 45 for supplying a thread 50 . The bobbin 5 includes a shaft 51 for winding the lower wire 50 , and two shaft disks 52 respectively connected to two opposite ends of the shaft 51 along the vertical direction Z. The shaft post 51 and the equiaxed disc 52 define a winding space 53 capable of accommodating the lower wire 50 .

The detection unit 6 is used to detect whether the lower thread 50 is exhausted, and includes a transmitter 61 arranged on one of the positioning frames 23 and corresponding to the first window 43, a receiver 62 arranged on the other of the positioning frames 23 and corresponding to the second window 44, and a controller (not shown) electrically connected to the receiver 62. The launcher 61 has a launcher head 611 disposed in the corresponding positioning hole 231 of the positioning frame 23 and protruding toward the outer kettle 3 . The receiver 62 has a receiving head 621 disposed in the corresponding positioning hole 231 of the positioning frame 23 and protruding toward the outer tank 3 . The emitting head 611 can emit a light wave toward the bobbin 5 . The receiving head 621 can receive the light wave passing through the outer pot 3 , the inner pot 4 and the bobbin 5 . When the suture supply device 1 with automatic cleaning function of the present invention is used, the emitting head 611 emits the light wave constantly.

5 to 8, the light wave emitted by the emitting head 611 enters the first chamber 36 through the wire groove 33 or one of the grooves 34, enters the second chamber 45 through the first window 43, passes through the winding space 53, leaves the second chamber 45 through the second window 44, and leaves the first chamber 36 through the wire groove 33 or the groove 34. The inner tank peripheral wall 42 receives the light wave by the receiving head 621 . Wherein the traveling path of the light wave (as shown by the dotted line drawn between the transmitting head 611 and the receiving head 621 in FIG. 5 and FIG. 6 ) is adjacent to the surface of the shaft 51 in the winding space 53 .

It should be noted that, in other embodiments, the inner kettle 4 may only have a window (not shown), and the window extends radially on the inner kettle peripheral wall 42 and can communicate with the wire groove 33 and the groove 34 at the same time, so that the light wave emitted by the emitting head 611 passes through one of the wire groove 33 or the groove 34, enters the second chamber 45 from one end of the window, and leaves the second chamber 45 through the other end of the window, and passes through the groove 34. The wire groove 33 or the other of the groove 34 leaves the first chamber 36 and is received by the receiving head 621 .

The receiving head 621 calculates the received luminous flux after receiving the light wave, and outputs a light wave signal indicating the received luminous flux to the controller. The controller further determines whether the received luminous flux is greater than a preset critical value P, and when it is determined that the received luminous flux is greater than the critical value P, an alarm is issued to remind the user.

Referring to FIG. 3 , in this embodiment, when the outer kettle 3 is driven to rotate around the axis L, the number of times the light wave emitted by the emitting head 611 is blocked by the outer kettle peripheral wall 32 is twice, and the number of times it can pass through the outer kettle peripheral wall 32 and the inner kettle peripheral wall 42 and is received by the receiving head 621 is also twice.

Referring to Fig. 3 and Fig. 9, when the light wave emitted by the transmitting head 611 is blocked by the outer wall 32, the receiving head 621 does not receive the light wave, so as shown in Fig. 9 in a time interval T2 and T4, the received luminous flux approaches zero and remains constant.

Referring to Fig. 3, Fig. 6 and Fig. 9, in the state where the lower thread 50 is wound around the shaft 51 to fill up the winding space 53, when the light wave emitted by the emitting head 611 enters the first chamber 36 through one of the wire groove 33 or the groove 34, and enters the second chamber 45 through the first window 43, most of the light wave will be blocked by the lower thread 50, and only a small part of the light wave can leave the second chamber through the second window 44. The chamber 45 leaves the first chamber 36 through the wire groove 33 or the groove 34 , and is received by the receiving head 621 . Therefore, as shown in a time interval T1 and T3 in FIG. 9 , the received luminous flux in the time interval T1 and T3 is greater than the received luminous flux in the time interval T2 and T4 and smaller than the critical value P.

Referring to FIGS. 6 to 9 , when the lower thread 50 has been completely used up, when the light wave emitted by the emitting head 611 enters the first chamber 36 through one of the wire groove 33 or the groove 34 , and enters the second chamber 45 through the first window 43 , it can pass through the winding space 53 without hindrance, and leave the second chamber 45 through the second window 44 , and then leave the first chamber through the wire groove 33 or the other of the groove 34 36, and is received by the receiving header 621. Therefore, as shown in the time interval T5 of FIG. 9 , the luminous flux received in the time interval T5 is greater than the luminous flux received in the time intervals T1 and T3, and is greater than the critical value P, so the controller judges that the downline 50 has been used up, and issues a warning to remind the user.

In this embodiment, the transmitter 61 is an infrared transmitter, and the receiver 62 is an infrared receiver, but not limited thereto, the transmitter 61 can also be a laser light transmitter, or other types of transmitters, and the receiver 62 is a corresponding receiver type.

Referring to FIG. 2 , FIG. 3 and FIG. 5 , the cleaning member 7 is disposed on the peripheral wall 32 of the outer kettle, and rotates around the axis L along with the outer kettle 3 . And the cleaning part 7 is fixed on the outer surface of the peripheral wall 32 of the outer kettle at the position corresponding to the positioning holes 231 along the vertical direction Z. When the outer kettle 3 rotates, the cleaning part 7 can clean the emitting head 611 and the receiving head 621 protruding from the positioning holes 231. In this embodiment, the cleaning member 7 is a soft brush, so when the cleaning member 7 rotates around the axis L with the outer kettle 3, it can directly touch the emitting head 611 and the receiving head 621 to brush off the dander and lint attached to the emitting head 611 and the receiving head 621, so as to ensure that the light waves are normally emitted and received.

It should be noted that, because the cleaning part 7 is a soft brush in this embodiment, it can directly touch the emitting head 611 and the receiving head 621. In other embodiments, if the cleaning part 7 adopts a hard brush or a hook-like member, it is necessary to keep a distance between the cleaning part 7 and the emitting head 611 and the receiving head 621, so as to prevent the cleaning part 7 from directly colliding with the emitting head 611 and the receiving head 621 to cause its detection function to fail. And in the embodiment where the cleaning part 7 adopts a hard brush or a hook-shaped member, the way to remove the dander and lint on the emitting head 611 and the receiving head 621 is to grab the larger dander and lint on the emitting head 611 and the receiving head 621 when the cleaning member 7 rotates with the outer kettle 3 . Wherein, when the cleaning part 7 cleans the emitting head 611 and the receiving head 621, dander and lint are attached to the cleaning part 7 instead, by the centrifugal force generated by the cleaning part 7 rotating with the outer kettle 3, the dandruff and lint attached to the cleaning part 7 can be separated outwards, so as to avoid excessive dander and lint being attached to the cleaning part 7, which will affect its cleaning function. Therefore, in this embodiment, there is no need to manually clean the outside of the outer kettle 3, and the detection function will not be disabled, that is, it has the function of automatic cleaning.

To sum up, the new suture supply device 1 with automatic cleaning function, with the cleaning part 7 arranged on the outer surface of the peripheral wall 32 of the outer pot, the cleaning part 7 can clean the emitter 61 and the receiver 62 located outside the outer pot 3 when it rotates with the outer pot 3, and because the cleaning part 7 uses a soft brush, it can directly touch the emitting head 611 and the receiving head 621, so as to remove dander and lint attached to the emitting head 611 and the receiving head 621 The lint is effectively removed to ensure that the transmitter 61 can normally emit the light wave, and the receiver 62 can normally receive the light wave, and avoid the function failure of detecting whether the offline 50 is exhausted, so the purpose of the present invention can indeed be achieved.

But the above-mentioned person is only the embodiment of the present invention, should not limit the range of implementation of the present invention with this, all the simple equivalent changes and modifications done according to the patent scope of the present application and the contents of the patent description, all still belong to the scope covered by the present patent.

1: Suture supply device with automatic cleaning function 10: Sewing machine 101: needle bar 2: Mounting seat 21: Install the base wall 22: Install the retaining wall 23: positioning frame 231: positioning hole 3: Outer kettle 31: The base wall of the outer kettle 32: Peripheral wall of the outer kettle 33: trunking 34: Groove 35: hook tip 36: The first chamber 4: Inner kettle 41: Inner kettle base wall 42: Peripheral wall of inner kettle 43: First window 44:Second window 45: The second chamber 5: Spool 50: offline 51: shaft column 52: axle disk 53: Winding space 6: Detection unit 61: Launcher 611: launch head 62: Receiver 621: Receive header 7: Cleaning parts L: axis Z: up and down direction X: left and right directions P: critical value T1: time interval T2: time interval T3: time interval T4: time interval T5: time interval

Other features and effects of the present invention will be clearly presented in the implementation manner with reference to the drawings, wherein: Fig. 1 is a three-dimensional exploded view illustrating an embodiment of a new sewing thread supply device with automatic cleaning function installed on a sewing machine; Fig. 2 is a perspective view of this embodiment; Fig. 3 is a three-dimensional exploded view of this embodiment; Fig. 4 is a perspective view of an inner kettle of this embodiment; Fig. 5 is a top view of this embodiment; Fig. 6 is a three-dimensional sectional view of this embodiment; Fig. 7 is a sectional view along line VII-VII of Fig. 5; Figure 8 is a sectional view along line VIII-VIII of Figure 5; and FIG. 9 is a schematic diagram of the variation of the luminous flux of a light wave emitted by a transmitter received by a receiver according to the embodiment as time goes by.

2: Mounting seat

21: Install the base wall

22: Install the retaining wall

23: positioning frame

231: positioning hole

3: Outer kettle

31: The base wall of the outer kettle

32: Peripheral wall of the outer kettle

33: trunking

34: Groove

35: hook tip

36: The first chamber

4: Inner kettle

41: Inner kettle base wall

42: Peripheral wall of inner kettle

43: First window

45: The second chamber

5: Spool

50: offline

52: axle disk

6: Detection unit

61: Launcher

611: launch head

62: Receiver

621: Receive header

7: Cleaning parts

L: axis

Z: up and down direction

X: left and right directions

Claims (6)

A suture supply device with automatic cleaning function, suitable for a sewing machine, comprising: An outer kettle, which can be driven by the sewing machine to rotate around an axis, and includes an outer kettle base wall, and an outer kettle peripheral wall surrounding the outer kettle base wall, the outer kettle base wall and the outer kettle peripheral wall define a first chamber open upward; An inner kettle, set in the first chamber, and including an inner kettle base wall, and an inner kettle peripheral wall surrounding the inner kettle base wall, the inner kettle base wall and the inner kettle peripheral wall define an upwardly open second chamber; A spool is set in the second chamber and used to supply the lower thread; A detection unit is used to detect the off-line, and includes a transmitter located outside the peripheral wall of the outer kettle and capable of emitting a light wave toward the bobbin, and a receiver located outside the peripheral wall of the outer kettle and spaced from the transmitter, and the receiver can receive the light wave passing through the outer kettle, the inner kettle and the bobbin; and A cleaning element is arranged on the peripheral wall of the outer kettle and rotates with the outer kettle around the axis, so as to clean the transmitter and the receiver. The suture supply device with automatic cleaning function as described in Claim 1, wherein the outer kettle further includes a wire groove formed on the peripheral wall of the outer kettle, and a groove formed on the peripheral wall of the outer kettle and spaced from the wire groove, the inner kettle also includes a first window formed on the peripheral wall of the inner kettle, and a second window formed on the peripheral wall of the inner kettle and spaced from the first window. communicate with the wire groove or the other of the groove. The suture supply device with automatic cleaning function as described in claim 1, further comprising a mounting seat fixed on the sewing machine and provided for the outer kettle, the mounting seat includes a mounting base wall, a mounting wall connected to the mounting base wall and extending around the peripheral wall of the outer kettle, and two positioning frames arranged on the mounting blocking wall and opposite to each other, and the positioning frames are respectively used for mounting and fixing the transmitter and the receiver. The suture supply device with automatic cleaning function as described in claim item 3, wherein each positioning frame has a positioning hole, the transmitter has a transmitting head which is arranged in the positioning hole corresponding to the positioning frame and protrudes toward the direction of the outer kettle, and the receiver has a receiving head which is arranged in the positioning hole of the corresponding positioning frame and protrudes toward the direction of the outer kettle, and the cleaning part is arranged on the outer surface of the peripheral wall of the outer kettle at a position corresponding to the positioning holes, so that the cleaning part can clean the emitting head and the receiving part when the outer kettle rotates head. The suture supply device with automatic cleaning function as described in Claim 1, wherein the cleaning member is a soft brush, which can touch the transmitter and the receiver when the outer kettle rotates around the axis, so as to clean the transmitter and the receiver. The suture supply device with automatic cleaning function as described in Claim 1, wherein the bobbin includes a shaft for winding the lower thread, and two shaft discs respectively connected to two opposite ends of the shaft, the shaft and the equiaxed discs define a winding space capable of accommodating the lower thread, the light wave emitted by the transmitter can pass through the outer wall of the kettle, the inner wall of the kettle and the winding space to be received by the receiver, and the traveling path of the light wave is adjacent to the surface of the shaft.

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