CN112430920A - Button sewing machine and lifting, pressing and wire shearing mechanism thereof - Google Patents
Button sewing machine and lifting, pressing and wire shearing mechanism thereof Download PDFInfo
- Publication number
- CN112430920A CN112430920A CN202011314678.9A CN202011314678A CN112430920A CN 112430920 A CN112430920 A CN 112430920A CN 202011314678 A CN202011314678 A CN 202011314678A CN 112430920 A CN112430920 A CN 112430920A
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- driving
- lifting
- crank
- hinged
- wire shearing
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/10—Electrical or electromagnetic drives
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a button sewing machine and a lifting and pressing thread trimming mechanism thereof, comprising: the wire cutting machine comprises a motor, a driving cam, a driving crank, a crank supporting shaft, a resetting piece, a lifting and pressing transmission assembly, a twisting clamp holding device, a wire cutting transmission assembly and a wire cutting assembly, wherein an output shaft of the motor is connected with the driving cam, the driving crank is installed on the crank supporting shaft, a transmission end and a driving end are arranged on the driving crank, the resetting piece is used for pressing the transmission end on a cam surface of the driving cam, the lifting and pressing transmission assembly is hinged to the driving end of the driving crank, and the wire cutting transmission assembly is hinged to the driving end of the driving crank. Compared with the linear driving mode of the traditional electromagnet, the rotary driving mode of the motor can reduce the impact on the subsequent connecting part, reduce the noise and the loss of the part, and therefore the stable operation and the service life of the lifting and pressing wire shearing mechanism can be guaranteed.
Description
Technical Field
The invention relates to the field of sewing, in particular to a lifting and pressing thread trimming mechanism and a button sewing machine comprising the lifting and pressing thread trimming mechanism.
Background
The existing button sewing machine lifting and pressing thread trimming mechanism generally adopts an electromagnet to drive a connecting rod mechanism to drive lifting and pressing and thread trimming, and the lifting and pressing thread trimming mechanism mainly has the following defects:
1. the electromagnet has large and quick attraction force and large impact on related connecting pieces, so that gaps are easy to occur, the movement precision is influenced, and noise is also generated.
2. From the electromagnet to the pressure lifting and wire shearing end, the number of transmission parts is large, and the transmission precision and the power loss are influenced greatly.
3. The link mechanism has a large requirement on the attraction force of the electromagnet, so that the electromagnet body has a large volume and is difficult to place in the machine shell, and the electromagnet body is usually externally arranged outside the machine shell, so that the integration level is low.
Therefore, how to improve the motion stability and the service life of the lifting and pressing wire shearing mechanism is a technical problem which needs to be solved urgently by the technical personnel in the field.
Disclosure of Invention
One object of the present invention is to provide a pressure-lifting thread trimming mechanism which can effectively improve the motion stability and the service life thereof, and another object is to provide a button sewing machine including the pressure-lifting thread trimming mechanism.
In order to solve the technical problems, the invention provides the following technical scheme:
a lift-press wire shearing mechanism comprising:
the driving mechanism comprises a motor, a driving cam, a driving crank, a crank supporting shaft and a resetting piece, wherein an output shaft of the motor is connected with the driving cam, the driving crank is installed on the crank supporting shaft, a driving end and a driving end are arranged on the driving crank, and the resetting piece is used for pressing the driving end on a cam surface of the driving cam;
the lifting and pressing transmission assembly is hinged with the driving end of the driving crank; the thread cutting transmission assembly is hinged with the driving end of the driving crank; the motor is used for controlling the driving cam to rotate, so that the driving crank is driven to rotate, the pressure lifting transmission assembly lifts the twisting clamp holding device, and the thread cutting transmission assembly drives the thread cutting assembly to cut a thread.
Preferably, the piece that resets includes torsional spring and carrier, the torsional spring cover is established on the crank support axle, the one end of torsional spring with the drive end is connected, the other end with carrier connects.
Preferably, the bearing member includes a bearing plate and a fixing member, the bearing plate is provided with an elongated slot, and the fixing member is used for adjusting the position of the bearing plate through the elongated slot to adjust the torsion of the torsion spring.
Preferably, the driving crank is a V-crank, the driving end is a branch end of the V-crank, and the transmission end is another branch end of the V-crank.
Preferably, the device further comprises a driving connecting rod, a lifting and pressing trimming swing arm and a swing arm support, wherein the lifting and pressing trimming swing arm comprises a lifting and pressing trimming input end, a lifting and pressing output end and a trimming output end, the lifting and pressing trimming swing arm is hinged to the swing arm support, one end of the driving connecting rod is hinged to the driving end, the other end of the driving connecting rod is hinged to the lifting and pressing trimming input end, the lifting and pressing output end is hinged to the lifting and pressing transmission assembly, and the trimming output end is hinged to the trimming transmission assembly.
Preferably, the thread trimming transmission assembly comprises a thread trimming pull rod assembly and a driving rod, the thread trimming assembly comprises a fixed cutter and a movable cutter, the fixed cutter is hinged to the movable cutter, one end of the thread trimming pull rod assembly is hinged to the thread trimming output end, the other end of the thread trimming pull rod assembly is hinged to one end of the driving rod, and the other end of the driving rod is hinged to the movable cutter.
Preferably, the pressure lifting transmission assembly comprises a pressure lifting transmission connecting rod, a pressure lifting lever, a lever rotating shaft and a pressure lifting bent rod, a pressure lifting buckle rod is arranged on the pressure twisting clamp holding device, one end of the pressure lifting transmission connecting rod is hinged to the pressure lifting output end, the other end of the pressure lifting transmission connecting rod is hinged to one end of the pressure lifting lever, the pressure lifting lever is hinged to the lever rotating shaft, the other end of the pressure lifting lever is connected with the pressure lifting bent rod, and the pressure lifting bent rod is used for being connected with the pressure lifting buckle rod.
Preferably, the clamping device further comprises a compression spring connected with the clamping device, and the compression spring is used for pressing down the clamping device.
Preferably, the device further comprises a hand wheel connected with the driving cam, and the hand wheel is used for rotating the driving cam.
A button sewing machine comprising the pressure-lifting thread trimming mechanism.
Compared with the prior art, the technical scheme has the following advantages:
the invention provides a button sewing machine and a lifting and pressing thread trimming mechanism thereof, comprising: the wire cutting machine comprises a motor, a driving cam, a driving crank, a crank supporting shaft, a resetting piece, a lifting and pressing transmission assembly, a twisting clamp holding device, a wire cutting transmission assembly and a wire cutting assembly, wherein an output shaft of the motor is connected with the driving cam, the driving crank is installed on the crank supporting shaft, a transmission end and a driving end are arranged on the driving crank, the resetting piece is used for pressing the transmission end on a cam surface of the driving cam, the lifting and pressing transmission assembly is hinged to the driving end of the driving crank, and the wire cutting transmission assembly is hinged to the driving end of the driving crank. Compared with the linear driving mode of the traditional electromagnet, the rotary driving mode of the motor can reduce the impact on the subsequent connecting part, reduce the noise and the loss of the part, and therefore the stable operation and the service life of the lifting and pressing wire shearing mechanism can be guaranteed.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a lifting and pressing wire shearing mechanism according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram illustrating another view direction of a pressure wire cutting mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a button attaching machine according to an embodiment of the present invention;
fig. 4 is a right side view of fig. 3.
The reference numbers are as follows:
the device comprises a motor 1, a driving crank 2, a torsion spring 3, a crank supporting shaft 4, a bearing part 5, a driving cam 6, a hand wheel 7, a roller 8, a driving connecting rod 9, a pressure-raising and shearing line swinging arm 10, a swinging arm support 11, a swinging arm rotating shaft 12, a pressure-raising and transmission connecting rod 13, a pressure-raising lever 14, a lever rotating shaft 15, a pressure spring 16, a pressure-raising and bending rod 17, a twisting clamp holding device 18, a pressure-raising and buckling rod 19, a central shaft 20, a line-shearing pull rod assembly 21, a driving rod 22, a connecting pin 23, a moving blade 24, a line-shearing rotating shaft 25 and a fixed blade 26.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, specific details are set forth in order to provide a thorough understanding of the present invention. The invention can be implemented in a number of ways different from those described herein and similar generalizations can be made by those skilled in the art without departing from the spirit of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a lifting and pressing wire shearing mechanism according to an embodiment of the present invention in one view direction; FIG. 2 is a schematic structural diagram illustrating another view direction of a pressure wire cutting mechanism according to an embodiment of the present invention; FIG. 3 is a schematic cross-sectional view of a button attaching machine according to an embodiment of the present invention; fig. 4 is a right side view of fig. 3.
One embodiment of the present invention provides a pressure-lifting wire cutting mechanism, as shown in fig. 1, including: motor 1, the drive cam, drive crank 2, crank back shaft 4, reset piece, lift and press the drive assembly, turn round the tong clamping device, the trimming drive assembly, the trimming assembly, wherein motor 1 can set up in the casing, the output shaft and the drive cam of motor 1 are connected, drive crank 2 is installed on crank back shaft 4, be equipped with drive end and drive end on the drive crank 2, it is used for compressing tightly the drive end on the cam surface of drive cam to reset the piece, the drive end is preferred the roller, the roller can roll on the cam surface, it is articulated with the drive end of drive crank 2 to lift and press the drive assembly, the trimming drive assembly is articulated with the drive end of drive crank 2. During specific work, the motor 1 is started, the output shaft rotates for a certain angle along the direction a in the figure 1, at the moment, the driving crank 2 rotates clockwise, and therefore the driving end of the driving crank 2 controls the lifting and pressing transmission assembly to move along the direction b, so that the torque clamp holding device is lifted along the direction c; in addition, the driving end of the driving crank 2 pushes the thread cutting assembly to act along the direction d so as to cut a thread; after the above operation is completed, the motor 1 drives the output shaft to rotate in the direction e of fig. 1 by a certain angle, so that each of the moving parts is reset. For the linear driving mode of traditional electro-magnet, this embodiment passes through the rotary driving mode of motor 1, can reduce the impact to follow-up adapting unit, not only can the noise reduction, still can reduce the loss of part, consequently can guarantee to lift stable operation and the life of pressing thread trimming mechanism.
In addition, the transmission end of the driving crank 2 is preferably arranged right above the driving cam, the highest point of the driving cam is in contact with the transmission end, the acting force of the transmission end and the driving cam is consistent with the gravity direction of the driving cam, and an interlocking effect can be achieved, so that the holding torque of the phase on the motor 1 is reduced, the power output requirement is reduced, and the purposes of reducing the scalding probability of the motor 1 and prolonging the service life of the motor 1 are finally achieved.
Specifically, the piece that resets includes torsional spring 3 and holds carrier, and 3 covers of torsional spring are established on crank support shaft 4, and the one end and the drive end of torsional spring 3 are connected, and the other end is connected with holding carrier, as shown in fig. 1, holds carrier setting in the left lower part of drive cam, and the both ends of torsional spring 3 support the lateral part at holding carrier upper portion and drive end respectively tightly. The main function of the torsion spring 3 is to ensure that the driving end of the driving crank 2 is in close contact with the cam surface of the driving cam, so as to ensure the driving accuracy of the motor 1.
The bearing piece comprises a bearing plate and a fixing piece, wherein the bearing plate is provided with an elongated slot, the fixing piece is used for adjusting the position of the bearing plate through the elongated slot so as to adjust the torsion of the torsion spring 3, namely the bearing plate is fixed at different heights in the elongated slot through the fixing piece, the height position of the bearing plate can be controlled, the torsion of the torsion spring 3 can be improved when the bearing plate is at a higher position, and the torsion of the torsion spring 3 can be reduced when the bearing plate is at a lower position.
In particular, the driving crank 2 is preferably a V-crank, the driving end being one branch end of the V-crank and the driving end being the other branch end of the V-crank, wherein the middle part of the V-crank is hinged on the crank supporting shaft 4.
In an embodiment of the invention, the device further comprises a driving connecting rod, a pressure-raising trimming line swing arm and a swing arm support, wherein the pressure-raising trimming line swing arm comprises three branch ends, specifically a pressure-raising trimming line input end, a pressure-raising trimming line output end and a trimming line output end, and is hinged to the swing arm support, wherein the pressure-raising trimming line swing arm can be hinged to the swing arm support through a swing arm rotating shaft, one end of the driving connecting rod is hinged to the driving end, the other end of the driving connecting rod is hinged to the pressure-raising trimming line input end, the pressure-raising output end is hinged to a pressure-raising transmission assembly, and the trimming line output end is hinged to the trimming line. The lifting and pressing transmission assembly and the trimming transmission assembly can be powered simultaneously by driving the connecting rod and the lifting and pressing trimming swing arm.
Specifically, the trimming transmission assembly comprises a trimming pull rod assembly and a driving rod, the trimming assembly comprises a fixed knife and a movable knife, the fixed knife is hinged to the movable knife, for example, the fixed knife and the movable knife can be hinged through a trimming rotating shaft, one end of the trimming pull rod assembly is hinged to the trimming output end, the other end of the trimming pull rod assembly is hinged to one end of the driving rod, the other end of the driving rod is hinged to the movable knife, and for example, the driving rod and the movable knife can be hinged through a connecting pin.
And the lifting and pressing transmission assembly comprises a lifting and pressing transmission connecting rod, a lifting and pressing lever, a lever rotating shaft and a lifting and pressing buckling rod, a lifting and pressing buckling rod is arranged on the twisting and clamping device, one end of the lifting and pressing transmission connecting rod is hinged with the lifting and pressing output end, the other end of the lifting and pressing transmission connecting rod is hinged with one end of the lifting and pressing lever, the lifting and pressing lever is hinged with the lever rotating shaft, the other end of the lifting and pressing lever is connected with the lifting and pressing buckling rod, and the lifting and pressing buckling rod is used for being connected with the lifting and pressing buckling rod. When the pressure-lifting shearing line swing arm swings, the pressure-lifting output end drives the pressure-lifting transmission connecting rod to act, so that the pressure-lifting lever rotates, and the twisting clamp holding device is pulled to rotate around the central shaft through the pressure-lifting bending rod.
And further, the sewing machine further comprises a pressure spring connected with the twisting clamp holding device, and after the bending lifting rod and the pressing lifting buckle rod are tripped, the twisting clamp holding device can drive the twisting clamp to descend to press the sewing material under the action of the pressure spring.
Furthermore, the wire cutting device also comprises a hand wheel connected with the driving cam, when the button sewing machine is powered off and the machine is debugged and maintained, the hand wheel can be rotated to drive the driving cam to rotate, and through the transmission assembly, the lifting of the twisting pliers and the wire cutting action of the wire cutting assembly can be realized, so that whether the actions of all mechanisms are in place or not is ensured.
The embodiment of the invention also provides a button sewing machine which comprises the pressure-lifting thread shearing mechanism provided by any one of the embodiments, and the beneficial effects of the pressure-lifting thread shearing mechanism can be achieved by referring to the pressure-lifting thread shearing mechanism, which is not described herein again.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A lift-press wire shearing mechanism is characterized by comprising:
the driving mechanism comprises a motor, a driving cam, a driving crank, a crank supporting shaft and a resetting piece, wherein an output shaft of the motor is connected with the driving cam, the driving crank is installed on the crank supporting shaft, a driving end and a driving end are arranged on the driving crank, and the resetting piece is used for pressing the driving end on a cam surface of the driving cam;
the lifting and pressing transmission assembly is hinged with the driving end of the driving crank; the thread cutting transmission assembly is hinged with the driving end of the driving crank; the motor is used for controlling the driving cam to rotate, so that the driving crank is driven to rotate, the pressure lifting transmission assembly lifts the twisting clamp holding device, and the thread cutting transmission assembly drives the thread cutting assembly to cut a thread.
2. The lift-press wire shearing mechanism according to claim 1, wherein the resetting member comprises a torsion spring and a bearing member, the torsion spring is sleeved on the crank support shaft, one end of the torsion spring is connected with the driving end, and the other end of the torsion spring is connected with the bearing member.
3. The lift-press wire shearing mechanism according to claim 2, wherein said bearing member comprises a bearing plate and a fixing member, said bearing plate is provided with an elongated slot, and said fixing member is used for adjusting the position of said bearing plate through said elongated slot to adjust the torsion of said torsion spring.
4. The pressure-lifting wire shearing mechanism as recited in claim 1, wherein the driving crank is a V-crank, the driving end is one branch end of the V-crank, and the transmission end is the other branch end of the V-crank.
5. The lift-press wire shearing mechanism according to claim 1, further comprising a driving connecting rod, a lift-press wire shearing swing arm and a swing arm support, wherein the lift-press wire shearing swing arm comprises a lift-press wire shearing input end, a lift-press output end and a wire shearing output end, the lift-press wire shearing swing arm is hinged to the swing arm support, one end of the driving connecting rod is hinged to the driving end, the other end of the driving connecting rod is hinged to the lift-press wire shearing input end, the lift-press output end is hinged to the lift-press transmission assembly, and the wire shearing output end is hinged to the wire shearing transmission assembly.
6. The lift-press wire shearing mechanism according to claim 5, wherein the wire shearing transmission assembly comprises a wire shearing pull rod assembly and a driving rod, the wire shearing assembly comprises a fixed cutter and a movable cutter, the fixed cutter is hinged to the movable cutter, one end of the wire shearing pull rod assembly is hinged to the wire shearing output end, the other end of the wire shearing pull rod assembly is hinged to one end of the driving rod, and the other end of the driving rod is hinged to the movable cutter.
7. The wire shearing mechanism with the lifting function according to claim 5, wherein the lifting transmission assembly comprises a lifting transmission connecting rod, a lifting lever, a lever rotating shaft and a lifting bending rod, a lifting buckling rod is arranged on the twisting clamp holding device, one end of the lifting transmission connecting rod is hinged to the lifting output end, the other end of the lifting transmission connecting rod is hinged to one end of the lifting lever, the lifting lever is hinged to the lever rotating shaft, the other end of the lifting lever is connected with the lifting bending rod, and the lifting bending rod is used for being connected with the lifting buckling rod.
8. The lift-press wire shearing mechanism according to claim 1, further comprising a compression spring coupled to said torque clamping device for depressing said torque clamping device.
9. The lift-press wire shearing mechanism according to any one of claims 1 to 8, further comprising a hand wheel connected to the drive cam, the hand wheel being configured to rotate the drive cam.
10. A button attaching machine comprising the pressure-lifting wire cutting mechanism according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011314678.9A CN112430920A (en) | 2020-11-20 | 2020-11-20 | Button sewing machine and lifting, pressing and wire shearing mechanism thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011314678.9A CN112430920A (en) | 2020-11-20 | 2020-11-20 | Button sewing machine and lifting, pressing and wire shearing mechanism thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112430920A true CN112430920A (en) | 2021-03-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011314678.9A Pending CN112430920A (en) | 2020-11-20 | 2020-11-20 | Button sewing machine and lifting, pressing and wire shearing mechanism thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112430920A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273291A (en) * | 1999-05-06 | 2000-11-15 | 重机公司 | Chain-type stitch button-sewing machine |
| CN1458326A (en) * | 2002-05-13 | 2003-11-26 | 重机公司 | Sewing machine |
| JP2005278858A (en) * | 2004-03-29 | 2005-10-13 | Brother Ind Ltd | Sewing machine |
| CN101265639A (en) * | 2007-03-15 | 2008-09-17 | Juki株式会社 | Button sewing machine |
| CN201386194Y (en) * | 2009-03-16 | 2010-01-20 | 中捷缝纫机股份有限公司 | Driving mechanism for trimming, pressure lifting and thread wiping in sewing machine |
-
2020
- 2020-11-20 CN CN202011314678.9A patent/CN112430920A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1273291A (en) * | 1999-05-06 | 2000-11-15 | 重机公司 | Chain-type stitch button-sewing machine |
| CN1458326A (en) * | 2002-05-13 | 2003-11-26 | 重机公司 | Sewing machine |
| JP2005278858A (en) * | 2004-03-29 | 2005-10-13 | Brother Ind Ltd | Sewing machine |
| CN101265639A (en) * | 2007-03-15 | 2008-09-17 | Juki株式会社 | Button sewing machine |
| CN201386194Y (en) * | 2009-03-16 | 2010-01-20 | 中捷缝纫机股份有限公司 | Driving mechanism for trimming, pressure lifting and thread wiping in sewing machine |
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Application publication date: 20210302 |