CN106436070B - Built-in sewing machine wire winding mechanism - Google Patents

Abstract

The invention discloses a built-in sewing machine winding mechanism. The sewing machine comprises a casing and a motor drive mechanism arranged in the casing. The sewing machine winding mechanism is built in the casing and can fix a bobbin and can complete the automatic winding of the bobbin. The operation includes a bracket, a swingable connecting rod, a bevel gear mechanism linked with the motor transmission mechanism, a winding shaft mechanism that can rotate with the rotation of the bevel gear mechanism, and a shifting fork mechanism. The rotating annular rubber ring and the bobbin can be rotated with the rotation of the annular rubber ring. The bobbin is clamped on the bobbin and can be rotated with the rotation of the annular rubber ring so that the bobbin can be wound. The invention utilizes the clutch state between the annular rubber ring and the bevel gear to complete the automatic winding operation of the bobbin.

Description

A built-in sewing machine winding mechanism

technical field

The invention relates to the technical field of machinery, in particular to a built-in sewing machine winding mechanism.

Background technique

The sewing machine usually completes the sewing of the fabric through the bottom thread and the top thread, and the bottom thread is provided by the bobbin with the bottom thread wound in the shuttle. During the specific sewing process, the bobbin will be temporarily short of thread. Thread operation, if the entire bobbin is replaced, it is too wasteful, but manual winding is too cumbersome, time-consuming and labor-intensive, so it is improved to use the motor drive mechanism of the sewing machine to complete the automatic winding operation. The winding mechanism of the existing sewing machine has a complex structure, a large volume, and an unreasonable design. It is placed outside the casing, which not only affects the aesthetics of the sewing machine, but also interferes with the production process, affecting the working efficiency and working stability of the sewing machine. Reliability , that is, the failure rate is high. In addition, the existing sewing machine winding mechanism requires human hands to observe the winding situation at any time during the winding process, so as to prevent the winding from being overfilled, the degree of automation is low, and the work efficiency is low.

Therefore, how to realize a built-in sewing machine winding mechanism with simple structure, reasonable design, low production cost and high degree of automation is an urgent technical problem to be solved in the industry.

SUMMARY OF THE INVENTION

The main purpose of the present invention is to provide a built-in sewing machine winding mechanism, aiming to realize a built-in sewing machine winding mechanism with simple structure, reasonable design, low production cost and high degree of automation.

The invention provides a built-in sewing machine winding mechanism. The sewing machine includes a casing and a motor transmission mechanism arranged in the casing. The motor transmission mechanism includes a motor, a main shaft that can rotate with the operation of the motor, and is arranged on the main shaft and can be The driven gear that rotates with the rotation of the main shaft, the upper end surface of the casing is provided with a accommodating groove that can accommodate the bobbin at the corresponding position of the driven gear, the upper cover of the accommodating groove is provided with a panel, and the sewing machine winding mechanism is built into the machine. The bobbin can be fixed in the shell and the automatic winding operation of the bobbin can be completed. The sewing machine winding mechanism includes a bracket, a connecting rod, a bevel gear mechanism linked with the driven gear, and a winding shaft mechanism that can rotate with the rotation of the bevel gear mechanism. , shift fork mechanism, the winding shaft mechanism includes an annular rubber ring that can abut and rotate with the bevel gear mechanism, and a winding shaft that can rotate with the rotation of the annular rubber ring. Through the middle part of the bracket and the connecting rod, and extending to the upper end of the connecting rod, the bobbin is clamped on the upper end and can be rotated with the rotation of the annular rubber ring, so that the wire can be wound; one end of the connecting rod is connected with the bracket through rivets The other end is rotatably connected with the spool through a pin, so that the connecting rod can swing along the rivet. Under the action of external force, the fork mechanism can move the connecting rod to swing along the rivet, so that the spool mechanism can swing with the connecting rod and make the ring rubber. The bobbin is linked with the bevel gear mechanism and drives the bobbin to rotate and finally winds the bobbin; there is a bobbin at the corresponding position of the bobbin that can withstand the bobbin so that the bobbin moves away from the cone as the amount of bobbin winding increases. The directional movement of the gear mechanism in turn disengages the annular rubber ring from the limit eccentric which finally stops the bobbin winding operation of the bevel gear mechanism.

Preferably, the bevel gear mechanism includes a bevel gear shaft fixed on the bracket, and a bevel gear that is rotatably sleeved on the bevel gear shaft through a first retaining ring and linked with the driven gear.

Preferably, the fork mechanism includes a reversing fork and a spring.

Preferably, the upper end is provided with an open groove, and a retaining spring for clamping the bobbin is embedded in the open groove.

Preferably, the bracket is fixed in the casing, the upper end passes through the casing and is arranged in the accommodating groove, and the limiting eccentric is arranged in the accommodating groove and passes through the casing and is fixedly connected to the bracket.

Preferably, the end of the rivet is provided with a second retaining ring which enables the connecting rod to be rotatably fixed on the bracket.

The built-in sewing machine winding mechanism of the present invention is built in the casing and can be linked with the motor transmission mechanism so that the bobbin fixed on the sewing machine winding mechanism can be automatically wound, including a bracket, a connecting rod, and a driven gear The linked bevel gear mechanism, the winding shaft mechanism that can rotate with the rotation of the bevel gear mechanism, and the fork mechanism have the advantages of simple structure, reasonable design, few components and low production cost. The bracket of the present invention is fixed in the casing, the upper end part passes through the casing and is arranged in the accommodating groove, and the limiting eccentric wheel is arranged in the accommodating groove and passes through the casing to be fixedly connected with the bracket, and the upper end part of the bobbin can be fixed. And the limit eccentric wheel is arranged in the accommodating groove, and the accommodating groove can be covered with a panel, so that the sewing machine winding mechanism is not exposed outside the casing, the appearance of the sewing machine is simple and beautiful, and the sewing machine winding mechanism is built in the sewing machine. , will not interfere with the normal work of the sewing machine, improve the working stability and work efficiency of the sewing machine, in addition, the fork mechanism acts on the connecting rod to make it swing along the rivet, so that the winding shaft mechanism swings with the swinging of the connecting rod, thereby making the ring The rubber ring is linked with the bevel gear mechanism and drives the winding shaft to rotate, and finally the bobbin is wound. The operation is convenient, the winding speed is fast, and the phenomenon of idling and slippage will not occur. It has high working stability, strong practicability, and is limited in Under the action of the eccentric wheel, the winding shaft will move away from the bevel gear mechanism with the increase of the winding amount of the bobbin, so that when the thread is full, the annular rubber ring will be separated from the bevel gear mechanism and stop the bobbin winding operation. It can automatically stop the winding operation, with a high degree of automation and excellent performance. The invention truly realizes a built-in sewing machine winding mechanism with simple structure, small volume, reasonable and novel design, few parts and components, low production cost, high degree of automation and superior usability.

Description of drawings

1 is one of the three-dimensional exploded schematic views of an embodiment of a built-in sewing machine winding mechanism of the present invention;

FIG. 2 is the second exploded schematic diagram of the three-dimensional structure of an embodiment of a built-in sewing machine winding mechanism of the present invention;

3 is a schematic three-dimensional structural diagram of an embodiment of a built-in sewing machine winding mechanism of the present invention;

FIG. 4 is a top-view structural schematic diagram of an embodiment of a built-in sewing machine winding mechanism of the present invention;

FIG. 5 is a bottom structural schematic diagram of an embodiment of a built-in sewing machine winding mechanism of the present invention;

6 is a schematic side view of the structure of an embodiment of a built-in sewing machine winding mechanism of the present invention.

The realization, functional characteristics and advantages of the present invention will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

1 to 6, an embodiment of a built-in sewing machine winding mechanism of the present invention is proposed. The sewing machine includes a casing and a motor transmission mechanism arranged in the casing. The main shaft rotates during work, and the driven gear is arranged on the main shaft and can rotate with the rotation of the main shaft. The upper end surface of the casing is provided with an accommodating groove that can accommodate the bobbin 100 at the corresponding position of the driven gear. The upper cover of the accommodating groove is provided with a panel. The panel prevents the accommodating groove from being exposed and affects the overall aesthetics of the sewing machine. Simple and practical, the design is reasonable and novel.

The sewing machine winding mechanism of the present invention is built in the casing, and the sewing machine winding mechanism can fix the bobbin 100 and complete the automatic winding operation of the bobbin 100 .

The sewing machine winding mechanism includes a bracket 200, a connecting rod 300 fixed on the bracket 200, a bevel gear mechanism that is linked with the driven gear to rotate with the rotation of the driven gear, and a bobbin mechanism that can rotate with the rotation of the bevel gear mechanism. , The fork mechanism that can swing the connecting rod 300, the bracket 200 can fix the sewing machine winding mechanism in the casing, the structure is simple, and the combination and installation are convenient.

The bevel gear mechanism includes a bevel gear shaft 401 fixed on the bracket 200 and a bevel gear 402 rotatably sleeved on the bevel gear shaft 401 through a first retaining ring 403 and linked with the driven gear.

The bobbin mechanism includes an annular rubber ring 501 that can abut against the bevel gear mechanism and rotate with the rotation of the bevel gear 402 , and a bobbin 502 that can rotate with the rotation of the annular rubber ring 501 . The bobbin 502 includes a lower end portion fixedly connected with the annular rubber ring 501, an upper end portion that passes through the middle portion of the bracket 200 and the connecting rod 300 in turn, and extends to the outside of the connecting rod 300, and the lower end portion, the middle portion and the upper end portion are integrally formed. structure. The upper end of the bobbin 502 is provided with an open groove 503 , and a retaining spring 504 for securing the bobbin 100 is embedded in the open groove 503 . The bobbin 100 is fixed on the upper end by the retaining spring 504 , and the bobbin 100 can rotate with the rotation of the winding shaft 502 (ie the bobbin 100 can rotate with the rotation of the annular rubber ring 501 ) so that the bobbin can be wound. One end of the connecting rod 300 is rotatably connected to the bracket 200 through a rivet 301 , and the other end is rotatably connected to the bobbin 502 through a plug 505 , and the connecting rod 300 can swing along the rivet 301 . The end of the rivet 301 is provided with a second retaining ring 302 that enables the connecting rod 300 to be rotatably fixed on the bracket 200 . The external force acts on the fork mechanism, and the fork mechanism moves the connecting rod 300 to swing along the rivet 301, so that the winding shaft mechanism swings with the connecting rod 300, so that the annular rubber ring 501 is linked with the bevel gear mechanism and drives the winding shaft 502 to rotate. Wind the bobbin 100. A limit eccentric wheel 700 is provided at a position corresponding to the bobbin 100. The limit eccentric wheel 700 can withstand the bobbin 100 so that the winding shaft 502 moves away from the bevel gear mechanism with the increase of the winding amount of the bobbin 100. The direction movement thereby disengaging the annular rubber ring 501 from the bevel gear mechanism finally stops the bobbin 100 winding operation.

In this embodiment, the fork mechanism includes a reversing fork 601 and a spring 602.

The built-in sewing machine winding mechanism of the present invention is built in the casing and can be linked with the motor transmission mechanism so that the bobbin 100 fixed on the sewing machine winding mechanism can be automatically wound. The sewing machine winding mechanism includes a bracket 200, a connecting rod 300, a bevel gear mechanism linked with the driven gear, a winding shaft mechanism that can rotate with the rotation of the bevel gear mechanism, and a fork mechanism. The structure is simple, the design is reasonable, and the number of parts and components is small. Low production cost. The bracket 200 is fixed in the casing by means of screw connection, so that the components fixed on the bracket 200 are embedded in the casing, and the upper end passes through the casing and is set in the accommodating groove, and the limit of the fixed connection with the bracket 200 is limited. The position eccentric wheel 700 passes through the casing and is arranged in the accommodating groove. The upper end of the fixing bobbin 100 and the limit eccentric wheel 700 are both arranged in the accommodating groove. At the same time, a panel can be covered on the accommodating groove. When there is no need for winding operation, the panel cover is placed on the accommodating groove, and the sewing machine winding mechanism is not exposed outside the casing, which effectively avoids the interference of the independent and externally arranged sewing machine winding mechanism on the production process, and ensures the working efficiency of the sewing machine. The work is stable and reliable, and the overall appearance of the sewing machine is smooth, simple and beautiful. When the winding operation is performed, the panel is opened, the bobbin 100 is clamped on the upper end, then the panel is closed, and the fork mechanism is toggled, so that the connecting rod 300 swings along the rivet 301. Since the bobbin 502 passes through the connecting rod 300 Therefore, when the connecting rod 300 swings, the winding shaft mechanism is driven to swing and the winding shaft mechanism and the bevel gear mechanism are in conflict, and the annular rubber ring 501 of the winding shaft mechanism can rotate with the rotation of the bevel gear 402. The bobbin 100 rotates with the rotation of the winding shaft mechanism and performs the winding operation. The bobbin 100 is hidden in the accommodating groove, does not occupy any space at all, and does not affect the normal sewing work of the sewing machine, thereby improving the working efficiency of the sewing machine. Simple, reasonable and novel in design, the sewing machine winding mechanism hidden in the casing and the accommodating groove does not affect the overall structure of the sewing machine, making the appearance of the sewing machine simple and beautiful.

In addition, the sewing machine winding mechanism of the present invention is changed from the traditional structure. In the traditional structure, the annular rubber ring 501 is directly connected to the side wall of the main gear on the main shaft, so that the annular rubber ring 501 rotates with the rotation of the main gear. The rubber ring 501 and the main gear rotate mutually through friction. Such a structure is prone to slippage and idling, which affects the winding efficiency, and the annular rubber ring 501 is easy to wear and has a short service life. In the sewing machine winding mechanism of the present invention, a bevel gear mechanism is rotated and fixed on the bracket 200. The bevel gear 402 of the bevel gear mechanism meshes with the driven gear on the main shaft, so that the bevel gear 402 rotates with the rotation of the main shaft, and the bevel gear 402 It is closely meshed with the driven gear, and there will be no poor contact, idling, slippage, etc., with high working stability and long service life. The annular rubber ring 501 provided on the bobbin 502 can abut on the bevel gear 402 and rotate with the rotation of the bevel gear 402 , and the annular rubber ring 501 can also be separated from the bevel gear 402 to realize the gap between the annular rubber ring 501 and the bevel gear 402 . clutch effect. The bracket 200 is also provided with a connecting rod 300. One end of the connecting rod 300 is rotatably connected to the bracket 200 through a rivet 301, and the other end is rotatably connected to the bobbin 502 through a latch 505. The limit notch 201 for the spool 502 to swing with the connecting rod 300, when the connecting rod 300 swings along the rivet 301, the spool 502 swings with the connecting rod 300 in the limit notch 201, and can be toggled by the fork mechanism The connecting rod 300 swings to realize the clutch effect between the annular rubber ring 501 and the bevel gear 402 , the structure is simple, and the design is reasonable and novel.

When the external force acts on the fork mechanism, and the connecting rod 300 swings through the reversing fork 601, the spool 502 swings within the limit notch 201 along with the swing of the connecting rod 300, and at the same time, the annular rubber fixed on the lower end The ring 501 abuts on the outer side wall of the bevel gear 402 to realize the engagement effect between the annular rubber ring 501 and the bevel gear 402 . The bobbin 100 fixed on the upper end by the retaining spring 504 rotates with the rotation of the winding shaft 502, and finally the winding operation of the bobbin 100 is completed. When the winding amount of the bobbin 100 reaches a certain amount, the bobbin 100 collides with the limit eccentric wheel 700. With the continuous increase of the winding amount of the bobbin 100, the interaction between the bobbin 100 and the limit eccentric wheel 700 The greater the force, the limiter eccentric wheel 700 is fixed on the bracket 200 and is fixed, so as the interaction force increases, the bobbin 100 moves in the direction away from the limiter eccentric wheel 700, that is, the bobbin 502 moves with the As the winding amount of the bobbin 100 increases, it moves in the direction away from the bevel gear mechanism, so that the annular rubber ring 501 is separated from the bevel gear mechanism to achieve the separation effect between the annular rubber ring 501 and the bevel gear 402, and finally the bobbin is stopped. 100 winding operations to realize automatic stop work. The operation is convenient, the winding speed is fast, the bobbin 100 is clamped on the upper end by the retaining spring 504, the idling and slippage will not occur between the winding shaft 502 and the bobbin 100, the work is stable and reliable, the practicability is strong, and the limit is limited. Under the action of the eccentric wheel 700, the winding shaft 502 will move away from the bevel gear mechanism with the increase of the winding amount of the bobbin 100, so that when the thread is full, the annular rubber ring 501 will automatically move away from the bevel gear mechanism and stop the shuttle. The core 100 winding operation can automatically stop the winding operation, with a high degree of automation, superior performance and high work efficiency.

Therefore, the built-in sewing machine winding mechanism of the present invention solves the problems of complex structure, large volume, low work efficiency, low degree of automation and poor work stability of the existing sewing machine winding mechanism, and realizes simple structure and small volume. , Reasonable and novel design, built-in type, less parts, low production cost, high degree of automation, superior performance and other beneficial effects.

The above descriptions are only the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. Any equivalent structural transformation made by using the contents of the description and drawings of the present invention, or directly or indirectly applied to other related technical fields, will not limit the scope of the present invention. Similarly, it is included in the scope of patent protection of the present invention.

Claims (6)

1. A built-in type sewing machine winding mechanism comprises a machine shell and a motor transmission mechanism arranged in the machine shell, wherein the motor transmission mechanism comprises a motor, a main shaft capable of rotating along with the work of the motor and a driven gear arranged on the main shaft and capable of rotating along with the rotation of the main shaft, a containing groove capable of containing a shuttle peg is arranged on the upper end surface of the machine shell at the position corresponding to the position of the driven gear, and a panel is arranged on the containing groove The bobbin comprises a bobbin core, a bobbin winding shaft, a connecting rod and a bobbin, wherein the bobbin winding shaft can rotate along with the rotation of the annular rubber ring, the bracket is provided with a limiting notch through which the bobbin winding shaft can pass and can swing along with the connecting rod, the bobbin winding shaft comprises a lower end part fixedly connected with the annular rubber ring, an upper end part sequentially passing through the middle parts of the bracket and the connecting rod and extending out of the connecting rod, and the bobbin core is clamped on the upper end part and can rotate along with the rotation of the annular rubber ring so as to be wound; one end of the connecting rod is rotationally connected with the support through a rivet, the other end of the connecting rod is rotationally connected with the winding shaft through a bolt, so that the connecting rod can swing along the rivet, the shifting fork mechanism can shift the connecting rod to swing along the rivet under the action of external force, so that the winding shaft mechanism swings along with the swinging of the connecting rod, the annular rubber ring is linked with the bevel gear mechanism, the winding shaft is driven to rotate, and finally the shuttle peg is wound; and a position-limiting eccentric wheel which can be abutted against the shuttle peg so that the winding shaft moves towards the direction far away from the bevel gear mechanism along with the increase of the winding quantity of the shuttle peg is arranged at the corresponding position of the shuttle peg, so that the annular rubber ring is separated from the bevel gear mechanism, and the winding operation of the shuttle peg is finally stopped.

2. The built-in winding mechanism of a sewing machine according to claim 1, wherein the bevel gear mechanism comprises a bevel gear shaft fixedly arranged on the bracket, and a bevel gear rotatably sleeved on the bevel gear shaft through a first check ring and linked with the driven gear.

3. A built-in sewing machine thread winding mechanism according to claim 1 or 2, wherein the fork mechanism comprises a reversing fork, a spring.

4. The built-in winding mechanism of sewing machine according to claim 3, wherein the upper end portion is provided with an open slot, and a clamp spring for clamping the bobbin is embedded in the open slot.

5. The built-in winding mechanism of sewing machine according to claim 4, wherein the bracket is fixed in the housing, the upper end portion passes through the housing and is disposed in the accommodating groove, and the limiting eccentric wheel is disposed in the accommodating groove and passes through the housing and is fixedly connected with the bracket.

6. The built-in sewing machine thread winding mechanism according to claim 5, wherein the end of the rivet is provided with a second retainer ring for rotatably fixing the connecting rod to the bracket.

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