阅读说明：本技术 一种缝纫机的送布驱动电机 (Cloth feeding driving motor of sewing machine ) 是由 林子春 林群 李质彬 刘霖 许旭康 潘林勇 刘冰 刘华鹏 于 2021-11-03 设计创作，主要内容包括：本申请一种缝纫机的送布驱动电机,送布驱动电机以来回转的方式驱动输出轴带动主动轮和同步带使从动轮和送布轴以一定的角度进行摆动,促使安装在送布轴上的送布牙座以及送布牙架以相同的角度进行摆动,送布牙因此获得前后送布动作。利用上述送布驱动电机驱动同步带来替代摆动座进行运作；送布驱动电机在静止状态下开始来回转动是先向一个方向转动22.5°±2.5°,再往回摆动45°±5°,再以45°±5°角度循环往复进行来回转动实施5mm针距的缝制,并且可以在缝纫机非上电的情境下进行测量,取得实际测量数据,在缝纫机控制系统的控制下通过送布驱动电机的运转提高了缝纫机对针距的精准控制,从而提高了缝纫机的缝制品质。(The application provides a cloth feeding driving motor of sewing machine, and the mode that cloth feeding driving motor came round drives output shaft and drives action wheel and hold-in range and make from driving wheel and cloth feeding axle swing with certain angle, impel and install the feed dog seat and the feed dog frame that the cloth feeding epaxial and swing with the same angle, and the feed dog consequently obtains the action of front and back work feed. The cloth feeding driving motor is used for driving the synchronous belt to replace the swinging seat to operate; the cloth feeding driving motor starts to rotate back and forth in a static state, namely, the cloth feeding driving motor rotates 22.5 degrees +/-2.5 degrees in one direction, swings back by 45 degrees +/-5 degrees, and circularly rotates back and forth by 45 degrees +/-5 degrees to sew with a needle pitch of 5mm, and can measure under the situation that the sewing machine is not electrified to obtain actual measurement data, the accurate control of the sewing machine on the needle pitch is improved through the operation of the cloth feeding driving motor under the control of a sewing machine control system, so that the sewing quality of the sewing machine is improved.)

1. A cloth feeding driving motor of a sewing machine drives a cloth feeding tooth indirectly, and is characterized by comprising a driving wheel, a synchronous belt and a driven wheel, wherein the cloth feeding driving motor drives the driving wheel in a mode of rotating from the beginning, the driving wheel drives the driven wheel, and the driving wheel and the driven wheel indirectly drive the cloth feeding tooth through the synchronous belt; the cloth feeding driving motor starts to rotate in a reciprocating mode in a static state, rotates 22.5 degrees +/-2.5 degrees in one direction, swings back by 45 degrees +/-5 degrees, and reciprocates in a circulating mode at an angle of 45 degrees +/-5 degrees to sew with a needle pitch of 5 mm.

2. A cloth feeding driving motor for a sewing machine according to claim 1, wherein said cloth feeding driving motor drives the driving wheel, and the cloth feeding driving motor starts to rotate back and forth in a mechanical zero state in a stationary state by 22.5 ° ± 2.5 ° in a first direction.

3. A cloth feed driving motor for a sewing machine according to claim 1 or 2, wherein the cloth feed driving motor is rotated back and forth by an angle in a range of 45 ° ± 7 °.

4. A cloth feeding driving motor of a sewing machine according to claim 1 or 2, wherein the driving wheel has a shaft hole, the shaft hole of the driving wheel is fitted over the output shaft and the driving wheel is fastened to the output shaft; the cloth feeding driving motor drives the driving wheel in an operation mode of rotating, the driving wheel drives the driven wheel to operate through the synchronous belt, the driven wheel is fixed on the cloth feeding shaft, a cloth feeding tooth seat is installed on one side, close to the cloth feeding teeth, of the cloth feeding shaft, a cloth feeding tooth frame is arranged on the cloth feeding tooth seat in a matched mode through hinges, and the cloth feeding teeth are fixedly installed on the cloth feeding tooth frame.

5. A cloth feeding driving motor for a sewing machine according to claim 1 or 2, wherein the cloth feeding driving motor drives the output shaft to change the swing angle of the driving wheel, the larger the swing angle of the driving wheel is, the larger the needle pitch is, and the smaller the swing angle of the driving wheel is, the smaller the needle pitch is.

6. A feed driving motor for a sewing machine according to claim 1, wherein the feed driving motor drives the output shaft and the driving wheel, and the feed dog is located at an upper needle position and/or a lower needle position above an upper plane of the needle plate via the driving wheel, the feed shaft, the feed dog holder, and the feed dog.

7. A cloth feeding driving motor of a sewing machine according to claim 1, wherein the presser foot lifting mechanism of the sewing machine has a feed lifting foot assembly; the thread cutting mechanism is provided with a thread cutting assembly, the thread cutting assembly is arranged below a base plate of the sewing machine, the thread cutting assembly starts a thread cutting electromagnet to execute thread cutting action under the control of the control system, and after thread cutting is finished, a tooth lifting foot electromagnet arranged on a machine head of the sewing machine starts to execute tooth lifting foot action.

Technical Field

The application provides a work feed driving motor of sewing machine, concretely relates to sewing machine manufacturing technical field.

Background

The swing seat of the sewing machine is an important part for adjusting the needle pitch, is arranged between the connecting rod and the cloth feeding shaft crank, and the needle pitch adjustment and the backstitch are realized by adjusting the angle of the swing seat. In the early days, the needle pitch on the sewing machine is adjusted by rotating the swing seat connected to the rotating shaft, the new needle pitch is generated by adjusting the angle of the swing seat which drives the swing seat to rotate to different angles along the circumferential direction of the axis of the rotating shaft, the manual adjustment of the swing seat is inconvenient, and the adjustment efficiency is low. Many sewing machines carry out the automatically regulated of gauge needle through the motor nowadays, and its process is that the motor drives the swing of gauge needle regulation crank, and then drives the swing of gauge needle regulation connecting rod, finally changes the wobbling range of main shaft drive pay-off axle, realizes the automatically regulated of sewing gauge needle. The swing seat is used as a key part for the operation of the sewing machine, the manufacture is more complicated, the noise is higher in the use process, the fault often occurs, in addition, the stable operation of the swing seat is realized only by the cooperative operation of a lubricating system of the sewing machine, and the lubricating system is needed to be very relevant to the use of the swing seat in the working process.

Disclosure of Invention

The cloth feeding driving motor of the sewing machine is characterized by comprising a driving wheel, a synchronous belt and a driven wheel, wherein the driving wheel is driven by the cloth feeding driving motor in a rotary mode, the driving wheel drives the driven wheel, and the driving wheel and the driven wheel indirectly drive a cloth feeding tooth through the synchronous belt; the cloth feeding driving motor starts to rotate in a reciprocating mode in a static state, rotates 22.5 degrees +/-2.5 degrees in one direction, swings back by 45 degrees +/-5 degrees, and reciprocates in a circulating mode at an angle of 45 degrees +/-5 degrees to sew with a needle pitch of 5 mm.

Preferably, the cloth feeding driving motor drives the driving wheel, and the cloth feeding driving motor starts to rotate back and forth in a mechanical zero state in a static state by 22.5 degrees plus or minus 2.5 degrees in one direction.

Preferably, the feed drive motor is rotated back and forth by an angle in the range of 45 ° ± 7 °.

Preferably, the driving wheel is provided with a shaft hole, and the shaft hole of the driving wheel is sleeved on the output shaft and enables the driving wheel to be fastened on the output shaft; the cloth feeding driving motor drives the driving wheel in an operation mode of rotating, the driving wheel drives the driven wheel to operate through the synchronous belt, the driven wheel is fixed on the cloth feeding shaft, a cloth feeding tooth seat is installed on one side, close to the cloth feeding teeth, of the cloth feeding shaft, a cloth feeding tooth frame is arranged on the cloth feeding tooth seat in a matched mode through hinges, and the cloth feeding teeth are fixedly installed on the cloth feeding tooth frame.

Preferably, the cloth feeding driving motor drives the output shaft to change the swing angle of the driving wheel, the needle pitch is larger when the swing angle of the adjusted driving wheel is larger, and the needle pitch is smaller when the swing angle of the driving wheel is smaller.

Preferably, the feed driving motor drives the output shaft and the driving wheel, and the feed dog is positioned at an upper needle position or a lower needle position above the upper plane of the needle plate through the driven wheel, the feed shaft, the feed dog seat, the feed dog frame and the feed dog.

Preferably, the thread cutting and tooth lifting foot mechanism of the sewing machine comprises a thread cutting assembly and a tooth lifting foot assembly, and the presser foot lifting mechanism of the sewing machine is provided with the tooth lifting foot assembly; the thread cutting mechanism is provided with a thread cutting assembly, the thread cutting assembly is arranged below a base plate of the sewing machine, the thread cutting assembly starts a thread cutting electromagnet to execute thread cutting action under the control of the control system, and after thread cutting is finished, a tooth lifting foot electromagnet arranged on a machine head of the sewing machine starts to execute tooth lifting foot action.

Compared with the prior art, the beneficial effects of this application are: the cloth feeding driving motor drives the output shaft to drive the driving wheel and the synchronous belt in a rotary mode to enable the driven wheel and the cloth feeding shaft to swing at a certain angle, so that the cloth feeding tooth holder and the cloth feeding tooth frame which are arranged on the cloth feeding shaft swing at the same angle, and the cloth feeding teeth obtain front and back cloth feeding actions. The sewing machine of the cloth feeding driving motor does not have the swinging seat at first, the cloth feeding driving motor is used for driving the synchronous belt to replace the swinging seat to operate, the structure is simplified, parts do not need to be lubricated in the later period, and the working efficiency is improved; importantly, the cloth feeding driving motor starts to rotate back and forth in a static state, namely, the cloth feeding driving motor rotates 22.5 degrees +/-2.5 degrees in one direction, swings back by 45 degrees +/-5 degrees, and circularly rotates back and forth by 45 degrees +/-5 degrees to sew with a needle pitch of 5mm, and can measure under the situation that the sewing machine is not electrified to obtain actual measurement data, the accurate control of the sewing machine on the needle pitch is improved through the operation of the cloth feeding driving motor under the control of a sewing machine control system, so that the sewing quality of the sewing machine is improved.

Drawings

FIG. 1 is a front view of a cloth feed driving motor of a sewing machine;

FIG. 2 is a rear view of a cloth feed drive motor of the sewing machine;

FIG. 3 is a schematic view of a cloth feed driving motor of the sewing machine;

FIG. 4 is a connecting structure view of a driving wheel, a timing belt and a driven wheel of a cloth feeding driving motor of a sewing machine.

Reference numerals: the cloth feeding device comprises a cloth feeding driving motor 10, an output shaft 11, a synchronous belt 12, a shaft hole 13, a cloth feeding shaft 15, a cloth feeding tooth 16, a needle plate upper plane 17, a cloth feeding tooth rack 18, a cloth feeding tooth seat 19, a tooth lifting foot electromagnet 20, a thread cutting electromagnet 21, a driving wheel 30 and a driven wheel 31.

Detailed Description

Preferred embodiments of the present application will be described in detail below with reference to fig. 1-4, so that the advantages and features of the present application can be more easily understood by those skilled in the art, and the scope of protection of the present application will be clearly and clearly defined, and these embodiments are only for illustrating the present invention and are not limited thereto.

The sewing machine of this application has work feed actuating mechanism, gauge needle adjustment mechanism, thread trimming mechanism, lifts tooth foot mechanism, location machinery zero-bit mechanism and control system etc. except not having the swing seat that traditional gauge needle adjusted the needs, has all functions that can realize normally making work.

Referring to the drawings, the sewing machine comprises a cloth feeding driving motor 10, an output shaft 11, a driving wheel 30, a synchronous belt 12, a driven wheel 31, a cloth feeding shaft 15, a cloth feeding tooth rack 18, a cloth feeding tooth seat 19, a cloth feeding tooth 16 and a needle plate upper plane 17. The cloth feeding driving motor 10 is provided with an output shaft 11, a shaft hole 13 of the driving wheel 30 is sleeved on the output shaft 11, the driving wheel 30 is fastened on the output shaft 11, a synchronous belt 12 is installed between the driving wheel 30 and the driven wheel 31, the driving wheel 30 drives the driven wheel 31 to operate through the synchronous belt 12, and indirectly enables the driven wheel 31 fixed on the cloth feeding shaft 15 to drive the cloth feeding shaft 15 to operate. The feed driving motor 10 drives the output shaft 11 in a rotary manner to drive the driving wheel 30 and the synchronous belt 12 to make the driven wheel 31 and the feed shaft 15 swing at a certain angle, so that the feed dog seat 19 fixed on one side of the feed shaft 15 close to the feed dog and the feed dog holder 18 fixed and matched with the feed dog seat 19 swing at the same angle, and the feed dog 16 fixed on the feed dog holder 18 obtains a front and back feed action. Under the drive of a main shaft motor of the sewing machine, the feed dog 16 is indirectly driven to generate the up-and-down feed motion through the feed dog connecting rod and the feed dog shaft, the front-and-back feed motion and the up-and-down feed motion of the feed dog 16 are combined together, namely the two motions are fused on the feed dog 16, the generation of the required feed motion during sewing of the sewing machine is realized, and the feed dog 16 can normally feed and sew.

The sewing machine of this application does not have the swing seat, drives through action wheel 30 and hold-in range 12 and moves from driving wheel 31, plays the effect that reduces the sewing machine cost in making, has reduced the high dependence to lubricating system by a wide margin in the use is maintained, reaches the non-maintaining technological effect that need not lubricate. The stitch length adjusting mechanism can be adjusted by the stitch length adjusting mechanism under the driving of the cloth feeding driving motor 10 in a back and forth rotation mode; but also to perform a mechanical zero positioning action on the feed dog 16.

The needle pitch adjustment is performed in the needle pitch adjusting mechanism under the control of a control system, the cloth feeding driving motor 10 drives the output shaft 11 to change the rotation angles of the driving wheel 30 and the synchronous belt 12, the larger the rotation angle of the driving wheel 30 after adjustment is, the larger the needle pitch is, and the smaller the rotation angle of the driving wheel 30 is, the smaller the needle pitch is, so that the needle pitch is realized by the cloth feeding driving motor 10 under the control of the control system. The needle pitch adjusting mechanism can realize that one sewing machine has the function of adjusting various needle pitches, and overcomes the technical defect that the original sewing machine only has one type of sewing needle pitch.

In the zero position mechanism of the positioning machine, a cloth feeding driving motor 10 under the control of a control system drives an output shaft 11, a driving wheel 30 drives a driven wheel 31 through a synchronous belt 12, and then a cloth feeding shaft 15, a cloth feeding tooth seat 19, a cloth feeding tooth rack 18 and a cloth feeding tooth 16 are used for enabling the cloth feeding tooth 16 to stop staying at an upper needle position above a plane 17 on a needle plate or to be basically level with the plane 17 on the needle plate or at a lower needle position below the plane 17 on the needle plate (the cloth feeding tooth 16 is higher than the plane 17 on the needle plate to be the upper needle position, the cloth feeding tooth 16 is lower than the plane 17 on the needle plate to be the lower needle position), and the staying position of the cloth feeding tooth 16 is the zero position of the positioning machine. The mechanical zero position is determined by the control system when the cloth feeding driving motor 10 stays, namely, each stay position of the cloth feeding driving motor 10 is defined as a positioning mechanical zero position which is convenient for the sewing machine to identify the position of a sewing starting point.

The cloth feeding driving motor 10 drives the driving wheel 30 in a back-and-forth transferring and rotating manner, and the back-and-forth rotating angle of the cloth feeding driving motor 10 is the back-and-forth rotating angle of the driving wheel 30. Based on the sewing machine, under the sewing working condition that the stitch length is 5mm, the cloth feeding driving motor 10 drives the driving wheel 30 to rotate back and forth within the range of 45 degrees +/-5 degrees, and due to different sizes of parts of various sewing machine manufacturers, most sewing machines can operate within the range of the rotating angle, and the range of 45 degrees +/-5 degrees is for a plurality of machine types. When the cloth feeding driving motor 10 starts to rotate back and forth in a static mechanical zero state, the cloth feeding driving motor rotates 22.5 degrees plus or minus 2.5 degrees in one direction, then swings back by 45 degrees plus or minus 5 degrees, and then circularly rotates back and forth in an angle of 45 degrees plus or minus 5 degrees in a reciprocating manner, wherein the one direction is anticlockwise or clockwise. Here, the cloth feed driving motor 10 to be measured at a stitch length of 5mm is rotated back and forth at an angle of 45 ° ± 5 °, and the measurement may be performed in a case where the sewing machine is not powered on, so as to obtain actual data. In addition, the present application also proposes that the above-mentioned angle of the back and forth rotation of the cloth feeding driving motor 10 is in the range of 45 ° ± 7 ° to achieve the same technical effect as the above-mentioned angle of 45 ° ± 5 °.

In addition, the control system can determine the stop position of the feed dog 16 of the mechanical zero-position mechanism according to different sewing requirements. The cloth feeding teeth 16 can be selected to stay at the lower needle position for the safety of sewing, and the cloth feeding teeth 16 staying at the lower needle position can effectively avoid the condition that the tooth tips of the cloth feeding teeth 16 hurt cloth when sewing; or can be stopped at the lower needle position according to the sewing process. The mechanical zero position positioning is set by the control system according to the specific sewing process requirement of the sewing machine, and the sewing machine has a stable and reliable sewing process after the mechanical zero position mechanism is established.

In addition, the presser foot lifting mechanism of the sewing machine is provided with a feed lifting assembly; the thread trimming mechanism is provided with a thread trimming component. The thread cutting assembly is arranged below a sewing machine base plate, the thread cutting assembly starts the thread cutting electromagnet 21 to execute thread cutting action under the control of the control system, after thread cutting is finished, the tooth lifting foot electromagnet 20 arranged on a sewing machine head starts to execute tooth lifting foot action, and the thread cutting assembly and the tooth lifting foot assembly guarantee that the sewing machine finishes sewing smoothly.

The above description is only one of the preferred embodiments of the present application, and not intended to limit the scope of the present application, and all modifications that can be made to the equivalent structure or equivalent flow path by using the shape, structure and principle of the present application and the accompanying drawings, or applied to other related fields directly or indirectly are included in the scope of the present application.