Electronic winder with stop pin structure and sewing machine

Abstract

The utility model provides an electronic winder with a stop pin structure and a sewing machine, and belongs to the technical field of sewing equipment. The electronic winder comprises a mounting seat, a positioning seat, a wire spool and a rotatable wrench shaft are arranged on the mounting seat, a driving part for driving the wire spool to rotate is arranged on the positioning seat, a wire cutter is arranged on the wire spool, and a wrench and a stop block are arranged at one end and the other end of the wrench shaft respectively. A stop pin which can move up and down and can be positioned on the mounting seat is arranged on the mounting seat, a positioning hole is formed in the wire spool, an ejection pin which can eject out the stop pin and enable the stop pin to be inserted into the positioning hole is arranged on the stop block, and when the stop pin is inserted into the positioning hole, the wire spool stops rotating; a sensor used for detecting magnetic field changes is arranged on the positioning seat, a magnet is arranged on the stop block, and the sensor is electrically connected with the driving piece. According to the electronic winder, the winding amount can be accurately controlled according to needs.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing equipment, and relates to an electronic wire winder and a sewing machine with a stop pin structure. Background Art

[0002] In the process of sewing and processing clothes, a wire winder is needed for winding wires. The patent document with the application number 201920252050.7 provides a wire winding device for a sewing machine, which includes a mounting base. The mounting base is provided with a placement groove for placing a bobbin. A rotatable main shaft is inserted into the placement groove. The mounting base is provided with a swingable wire winding cam and a swingable wire pressing control plate. One end of the wire pressing control plate is fixedly connected to the wire winding cam through a connecting shaft. The other end of the wire pressing control plate extends to the position of the bobbin in the placement groove. The mounting base is also provided with an eccentric adjustment pin for adjusting the wire winding cam. A wire cutting knife is arranged in the placement groove. The wire winding device further includes a sensor corresponding to the wire winding cam and a driving member capable of driving the main shaft to rotate.

[0003] In the above wire winding device, when it is necessary to adjust the wire winding amount of the bobbin 18, loosen the locking screw 19, rotate the eccentric adjustment pin 6 according to the indication of the scale disk 17 to the position where the required wire winding amount is reached, and tighten the locking screw 19. In this way, the wire winding amount of the bobbin 18 can be intuitively adjusted by the customer. The above mechanical adjustment method of the wire winding amount cannot accurately quantitatively control the wire winding amount of the bobbin. The customer needs to repeatedly try to adjust during use to determine the appropriate wire winding amount. Summary of the Invention

[0004] In view of the above problems existing in the prior art, the utility model provides an electronic wire winder with a stop pin structure. The technical problem to be solved by the utility model is: how to accurately control the wire winding amount.

[0005] The purpose of the utility model can be achieved by the following technical solutions:

[0006] An electronic wire winder with a stop pin structure includes a mounting base. A positioning seat, a rotatable wire winding disk and a rotatable wrench shaft are arranged on the mounting base. A driving member for driving the wire winding disk to rotate is arranged on the positioning seat. A wire cutting knife is arranged on the wire winding disk. It is characterized in that a wrench and a stop block are respectively arranged at one end and the other end of the wrench shaft. A stop pin that can move up and down and can be positioned on the mounting base is arranged on the mounting base. A positioning hole is arranged on the wire winding disk. A top pin that can push out the stop pin and make the stop pin inserted into the positioning hole is arranged on the stop block. When the stop pin is inserted into the positioning hole, the wire winding disk stops rotating. A sensor for detecting magnetic field change is arranged on the positioning seat. A magnet is arranged on the stop block. The sensor is electrically connected to the driving member.

[0007] Its working principle is as follows:

[0008] When winding is required, place the bobbin on the winding disc, push the wrench, rotate the wrench to the position of the bobbin, the stop block rotates with the wrench, the sensor detects the magnetic field generated by the magnet. At this time, the stop block is in the initial position, and the sensor sends a signal to the driving part. The driving part starts and drives the winding disc to rotate. The bobbin rotates with the winding disc and winding is carried out. When the winding disc rotates, the stop pin is located below the positioning hole.

[0009] As the winding amount increases, the thread on the bobbin abuts against the wrench and gradually pushes the wrench outwards. Until the required thread amount is reached, after the sensor detects that the stop block reaches the corresponding position through the change of the magnetic field of the magnet, the sensor sends a signal to the driving part, and the driving part stops driving the winding disc. At this time, the winding is completed and the bobbin can be removed.

[0010] This structure controls the driving part to drive the bobbin to rotate by detecting the change of the magnetic field by the sensor, and can accurately control the winding amount as required.

[0011] As the winding amount increases, the thread on the bobbin abuts against the wrench and gradually pushes the wrench outwards. During the rotation of the wrench, the stop block also rotates. When the top pin moves below the stop pin, the top pin pushes the stop pin out and makes the stop pin inserted into the positioning hole of the winding disc. The winding disc stops rotating, and the thread cutter can easily cut the top thread on the bobbin. The gap between the thread cutter and the winding disc is very small. After cutting, the thread cutter can firmly hold the top thread. During the next rotation, the winding disc can directly drive the bobbin to wind (without the need to manually pre-wind several turns of thread on the bobbin, avoiding uneven winding and the situation of knotting or loose falling), realizing the integration of thread cutting and winding.

[0012] This electronic winding device limits the winding disc through the stop pin. When the winding disc stops rotating, the thread cutter can easily cut the top thread on the bobbin. During the next rotation, the winding disc can directly drive the bobbin to wind, realizing the integration of thread cutting and winding.

[0013] In the above-mentioned electronic winding device with a stop pin structure, a cover plate is provided on the mounting seat, a limiting part is provided on the stop pin, the part of the stop pin below the limiting part is movably connected to the cover plate, and the bottom of the stop pin extends out from below the cover plate.

[0014] The stop pin is installed on the mounting seat through the cover plate and positioned on the cover plate through the limiting part. When the top pin moves below the stop pin, the top pin abuts against the bottom of the stop pin and pushes the stop pin out. The stop pin is inserted into the positioning hole of the winding disc, and the winding disc stops rotating. When the top pin is separated from the stop pin, the stop pin falls out of the positioning hole.

[0015] As an embodiment, the limiting part is a convex edge provided on the side surface of the stop pin.

[0016] In the above-mentioned electronic wire winder with a stop pin structure, an end portion of the stop block has an arc-shaped bending section. A crank pin and a tension spring pin are also mounted on the mounting base. A crank is mounted on the crank pin, a tension spring is connected to the tension spring pin, a spring piece is clamped on the crank, one end portion of the spring piece can abut against the bending section, and the other end portion of the spring piece is connected to the tension spring.

[0017] During the wire winding process, the spring piece is tangent to the arc-shaped bending section of the stop block, and the spring piece deforms without resetting.

[0018] In the above-mentioned electronic wire winder with a stop pin structure, a flat section is provided on one side of the bending section. The stop pin is located on the other end portion of the stop block. When the end portion of the spring piece abuts against the flat section, the top pin ejects the stop pin and makes the stop pin inserted into the positioning hole, and the wire winding disc stops rotating.

[0019] When the stop pin is inserted into the positioning hole of the wire winding disc, the wire winding disc stops rotating (at this time, the driving member receives a signal to stop driving the wire winding disc to rotate), and the cutting knife can conveniently cut the surface thread on the bobbin. After cutting, the cutting knife can firmly clamp the surface thread. During the next rotation, the wire winding disc can directly drive the bobbin to wind the wire.

[0020] In the above-mentioned electronic wire winder with a stop pin structure, the wrench includes a connecting block. The connecting block has a first link, the first link has a second link, the second link bends inward and is disposed opposite to the first link. Screws are threadedly connected to the first link and the second link, and nuts are passed through the screws, and the nuts abut against one side of the first link.

[0021] The first link and the second link form a U-shaped structure. By adjusting the opening degree of the wrench (i.e., rotating the screws to adjust the distance between the first link and the second link), the wrench can be ejected to complete the precise adjustment of the wire amount.

[0022] When it is necessary to adjust the wire winding amount, for example, when the wire winding amount requirement input by the electronic control is 80%, after the sensor detects that the stop block reaches the corresponding position through the magnetic field change of the magnet, the sensor sends a signal to the driving member, and the driving member stops driving the wire winding disc. At this time, the wire winding stops, but the wrench is not ejected. Only by adjusting the opening degree of the wrench through the screws and nuts to eject the wrench can the precise adjustment of the wire amount be completed. The next time the wire is wound, the wrench will eject when the wire amount reaches 80%, and at the same time, the wire winding will stop.

[0023] In the above-mentioned electronic wire winder with a stop pin structure, a wire winding shaft is installed on the wire winding disc. The driving member includes a motor, and the motor is installed on a positioning seat. The wire winding shaft is connected to the output shaft of the motor.

[0024] The wire winding shaft is used to place the bobbin. The motor drives the wire winding shaft to rotate, and the wire winding shaft drives the wire winding disc and the bobbin to rotate.

[0025] As another embodiment, the motor can be replaced by a rotary cylinder.

[0026] In the above-mentioned electronic wire winder with a stop pin structure, the sensor is a Hall detection sensor.

[0027] The present utility model also provides a sewing machine, which includes any one of the above-mentioned electronic wire winders with a stop pin structure.

[0028] Compared with the prior art, the advantages of the present utility model are as follows:

[0029] 1. The electronic wire winder limits the wire winding disc through the stop pin. When the wire winding disc stops rotating, the cutting knife can conveniently cut the surface thread on the bobbin. When rotating next time, the wire winding disc can directly drive the bobbin to wind the wire, realizing the integration of wire cutting and winding.

[0030] 2. The electronic wire winder detects the change of the magnetic field through the sensor to control the driving member to drive the bobbin to rotate, and can accurately control the wire winding amount according to needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of the electronic wire winder;

[0032] Figure 2 is a schematic structural diagram of the electronic wire winder from another perspective;

[0033] Figure 3 is a schematic structural diagram of the wire winding disc;

[0034] Figure 4 is a schematic structural diagram of the stop pin connected to the cover plate;

[0035] Figure 5 is a schematic structural diagram of the wrench installed on the mounting seat;

[0036] Figure 6 is a schematic structural diagram of a spring piece installed on the crank;

[0037] Figure 7 is a schematic structural diagram of the stop block;

[0038] Figure 8 is a schematic diagram of the electronic wire winder with a bobbin installed.

[0039] In the figure: 1 is the mounting base, 2 is the positioning base, 3 is the winding disc, 4 is the wrench shaft, 5 is the wire cutting knife, 6 is the wrench, 7 is the stop block, 8 is the stop pin, 9 is the positioning hole, 10 is the ejector pin, 11 is the cover plate, 12 is the limiting part, 13 is the sensor, 14 is the magnet, 15 is the bending section, 16 is the crank pin, 17 is the tension spring pin, 18 is the crank, 19 is the tension spring, 20 is the spring piece, 21 is the flat section, 22 is the connecting block, 23 is the first connecting rod, 24 is the second connecting rod, 25 is the screw, 26 is the nut, 27 is the winding shaft, 28 is the motor, 29 is the bobbin. Specific implementation mode

[0040] The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described in conjunction with the accompanying drawings, but the present invention is not limited to these embodiments.

[0041] As Figure 1 、 2 Shown in FIGS. 3 and 5, this electronic winding device includes a mounting base 1, on which a positioning base 2, a rotatable winding disc 3 and a rotatable wrench shaft 4 are provided. A driving member for driving the winding disc 3 to rotate is provided on the positioning base 2. A wire cutting knife 5 is provided on the winding disc 3. One end and the other end of the wrench shaft 4 are respectively provided with a wrench 6 and a stop block 7. A stop pin 8 that can move up and down and can be positioned on the mounting base 1 is provided on the mounting base 1. A positioning hole 9 is provided on the winding disc 3. An ejector pin 10 that can eject the stop pin 8 and make the stop pin 8 inserted into the positioning hole 9 is provided on the stop block 7. When the stop pin 8 is inserted into the positioning hole 9, the winding disc 3 stops rotating. A sensor 13 for detecting magnetic field changes is provided on the positioning base 2. A magnet 14 is provided on the stop block 7. The sensor 13 is electrically connected to the driving member.

[0042] As Figure 8 Shown in the figure, when winding is required, place the bobbin 29 on the winding disc 3, push the wrench 6, make the wrench 6 rotate to the position of the bobbin 29, the stop block 7 rotates with the wrench 6, the sensor 13 detects the magnetic field generated by the magnet 14. At this time, the stop block 7 is in the initial position, the sensor 13 sends a signal to the driving member, the driving member starts and drives the winding disc 3 to rotate, and the bobbin 29 rotates with the winding disc 3 and winds the wire. When the winding disc 3 rotates, the stop pin 8 is located below the positioning hole 9.

[0043] As the winding amount increases, the wire on the bobbin 29 abuts against the wrench 6 and gradually pushes the wrench 6 outwards. Until the wire amount is satisfied, after the sensor 13 detects that the stop block 7 reaches the corresponding position through the magnetic field change of the magnet 14, the sensor 13 sends a signal to the driving member, and the driving member stops driving the winding disc 3. At this time, the winding is completed, and the bobbin 29 can be taken down.

[0044] This structure detects the change in the magnetic field through the sensor 13 to control the driving member to drive the bobbin 29 to rotate, and can accurately control the winding amount as needed. As an embodiment, the sensor 13 is a Hall detection sensor.

[0045] As the winding amount increases, the wire on the bobbin 29 abuts against the wrench 6 and gradually pushes the wrench 6 outwards. During the rotation of the wrench 6, the stop block 7 also rotates. When the top pin 10 moves below the stop pin 8, the top pin 10 pushes out the stop pin 8 and makes the stop pin 8 inserted into the positioning hole 9 of the winding disc 3. The winding disc 3 stops rotating, and the thread cutter 5 can easily cut the surface thread on the bobbin 29. The gap between the thread cutter 5 and the winding disc 3 is very small. After cutting, the thread cutter 5 can firmly hold the surface thread. During the next rotation, the winding disc 3 can directly drive the bobbin 29 to wind the wire (without the need for manual pre-winding several turns of wire on the bobbin 29, avoiding uneven winding and the occurrence of knotting or loose falling), realizing the integration of thread cutting and winding.

[0046] As Figure 2 and 4 shown, in this embodiment, a cover plate 11 is provided on the mounting base 1, a limiting portion 12 is provided on the stop pin 8, and the portion of the stop pin 8 below the limiting portion 12 is movably connected to the cover plate 11. The bottom of the stop pin 8 extends from below the cover plate 11.

[0047] The stop pin 8 is installed on the mounting base 1 through the cover plate 11 and positioned on the cover plate 11 through the limiting portion 12. When the top pin 10 moves below the stop pin 8, the top pin 10 abuts against the bottom of the stop pin 8 and pushes out the stop pin 8. The stop pin 8 is inserted into the positioning hole 9 of the winding disc 3, and the winding disc 3 stops rotating. When the top pin 10 disengages from the stop pin 8, the stop pin 8 falls out of the positioning hole 9.

[0048] As an embodiment, the limiting portion 12 is a convex edge provided on the side surface of the stop pin 8.

[0049] As Figure 5 、 6 and 7 shown, in this embodiment, one end of the stop block 7 has an arc-shaped bending section 15. A crank pin 16 and a tension spring pin 17 are also installed on the mounting base 1. A crank 18 is installed on the crank pin 16, a tension spring 19 is connected to the tension spring pin 17, a spring piece 20 is clamped on the crank 18, and one end of the spring piece 20 can abut against the bending section 15, and the other end of the spring piece 20 is connected to the tension spring 19.

[0050] During the winding process, the spring piece 20 is tangent to the arc-shaped bending section 15 of the stop block 7, and the spring piece 20 deforms and does not reset.

[0051] As Figure 7As shown, in this embodiment, one side of the bending section 15 has a flat section 21. The stop pin 8 is located on the other end of the stop block 7. When the end of the spring piece 20 abuts against the flat section 21, the top pin 10 pushes out the stop pin 8 and makes the stop pin 8 inserted into the positioning hole 9, and the winding disc 3 stops rotating.

[0052] When the stop pin 8 is inserted into the positioning hole 9 of the winding disc 3, the winding disc 3 stops rotating (at this time, the driving member receives a signal to stop driving the winding disc 3 to rotate), and the cutting knife 5 can conveniently cut the surface thread on the bobbin 29. After cutting, the cutting knife 5 can firmly hold the surface thread. During the next rotation, the winding disc 3 can directly drive the bobbin 29 to wind the thread.

[0053] As Figure 6 shown, in this embodiment, the wrench 6 includes a connecting block 22. The connecting block 22 has a first connecting rod 23. The first connecting rod 23 has a second connecting rod 24. The second connecting rod 24 bends inward and is arranged opposite to the first connecting rod 23. A screw 25 is threadedly connected to the first connecting rod 23 and the second connecting rod 24. A nut 26 is penetrated through the screw 25, and the nut 26 abuts against one side of the first connecting rod 23.

[0054] The first connecting rod 23 and the second connecting rod 24 form a U-shaped structure. By adjusting the opening degree of the wrench 6 through the screw 25 and the nut 26 (that is, rotating the screw 25 to adjust the distance between the first connecting rod 23 and the second connecting rod 24), and making the wrench 6 pop out, the precise adjustment of the wire quantity can be completed.

[0055] When the winding quantity needs to be adjusted, for example, if the winding quantity requirement input by the electronic control is 80%, after the sensor 13 detects that the stop block 7 reaches the corresponding position through the magnetic field change of the magnet 14, the sensor 13 sends a signal to the driving member, and the driving member stops driving the winding disc 3. At this time, the winding stops, but the wrench 6 does not pop out. Only by adjusting the opening degree of the wrench 6 through the screw 25 and the nut 26 to make the wrench 6 pop out can the precise adjustment of the wire quantity be completed. The next time when winding, the wrench 6 will pop out when the wire quantity reaches 80%, and at the same time, the winding stops.

[0056] As Figure 2 shown, in this embodiment, a winding shaft 27 is installed on the winding disc 3. The driving member includes a motor 28. The motor 28 is installed on the positioning seat 2, and the winding shaft 27 is connected to the output shaft of the motor 28.

[0057] The winding shaft 27 is used to place the bobbin 29. The motor 28 drives the winding shaft 27 to rotate, and the winding shaft 27 drives the winding disc 3 and the bobbin 29 to rotate.

[0058] As another embodiment, the motor 28 can be replaced by a rotary cylinder.

[0059] The present utility model also provides a sewing machine, which includes any one of the above-mentioned electronic wire winders with a stop pin structure. The specific embodiments described herein are merely illustrative of the spirit of the present utility model. Those skilled in the art to which the present utility model pertains can make various modifications or supplements to the described specific embodiments or use similar means for substitution, but will not deviate from the spirit of the present utility model or exceed the scope defined by the appended claims.

Claims

1. An electronic wire winder with a stop pin structure, comprising a mounting seat (1), the mounting seat (1) being provided with a positioning seat (2), a rotatable wire winding disk (3) and a rotatable spanner shaft (4), the positioning seat (2) being provided with a driving member for driving the wire winding disk (3) to rotate, the wire winding disk (3) being provided with a wire cutting knife (5), characterized in that: A wrench (6) and a stop block (7) are respectively provided at one end and the other end of the wrench shaft (4); a stop pin (8) which can move up and down and can be positioned on the mounting seat (1) is provided on the mounting seat (1); a positioning hole (9) is provided on the winding drum (3); a push pin (10) which can push out the stop pin (8) and insert the stop pin (8) into the positioning hole (9) is provided on the stop block (7); when the stop pin (8) is inserted into the positioning hole (9), the winding drum (3) stops rotating; a sensor (13) for detecting a change in a magnetic field is provided on the positioning seat (2); a magnet (14) is provided on the stop block (7); and the sensor (13) is electrically connected to a driving member.

2. The electronic wire winder with a stop pin structure according to claim 1, characterized in that: A cover plate (11) is provided on the mounting seat (1), a limit portion (12) is provided on the stop pin (8), a portion of the stop pin (8) below the upper limit portion (12) is movably connected to the cover plate (11), and a bottom portion of the stop pin (8) extends from below the cover plate (11).

3. An electronic wire winder with a stop pin structure according to claim 1 or 2, characterized in that: The stop block (7) has an arc-shaped curved section (15) at one end, and a crank pin (16) and a tension spring pin (17) are also mounted on the mounting seat (1). A crank (18) is mounted on the crank pin (16), and a tension spring (19) is connected to the tension spring pin (17). A spring sheet (20) is clamped on the crank (18), and one end of the spring sheet (20) can abut against the curved section (15), and the other end of the spring sheet (20) is connected to the tension spring (19).

4. The electronic wire winder with a stop pin structure according to claim 3, characterized in that: One side of the curved section (15) has a flat section (21), and the stop pin (8) is located on the other end of the stop block (7). When the end of the spring sheet (20) abuts against the flat section (21), the ejector pin (10) ejects the stop pin (8) and inserts the stop pin (8) into the positioning hole (9), and the winding drum (3) stops rotating.

5. An electronic wire winder with a stop pin structure according to claim 1 or 2, characterized in that: The wrench (6) comprises a connecting block (22), the connecting block (22) is provided with a connecting rod 1 (23), the connecting rod 1 (23) is provided with a connecting rod 2 (24), the connecting rod 2 (24) is bent inwardly and arranged opposite to the connecting rod 1 (23), the connecting rod 1 (23) and the connecting rod 2 (24) are threadedly connected with a screw (25), the screw (25) is passed through with a nut (26), and the nut (26) is pressed against one side of the connecting rod 1 (23).

6. An electronic wire winder with a stop pin structure according to claim 1 or 2, characterized in that: The winding reel (3) is provided with a winding shaft (27), the driving member comprises a motor (28), the motor (28) is installed on the positioning seat (2), and the winding shaft (27) is connected to the output shaft of the motor (28).

7. The electronic wire winder with a stop pin structure according to claim 1, characterized in that: The sensor (13) is a Hall detection sensor (13).

8. A sewing machine, characterized in that: The sewing machine comprises an electronic wire winder with a stop pin structure as described in any one of claims 1-7.

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