CN106436070A - A built-in sewing machine winding mechanism - Google Patents

Abstract

The invention discloses a built-in winding mechanism of a sewing machine, which comprises a machine shell and a motor transmission mechanism arranged in the machine shell, wherein the sewing machine winding mechanism is arranged in the machine shell and can fix a shuttle peg and finish automatic winding operation of the shuttle peg. The invention utilizes the clutch state between the annular rubber ring and the bevel gear to complete the automatic bobbin winding operation, and the winding mechanism of the sewing machine is arranged in the shell and has the advantages of reasonable structural design, high automation degree, good working stability and the like.

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

Sewing machines usually use the bobbin thread and upper thread to complete the fabric sewing, and the bobbin thread is provided by the bobbin with the bobbin thread wound in the shuttle. During the specific sewing process, the bobbin will have a temporary lack of thread. Thread operation, if the whole bobbin is replaced, it is too wasteful, but winding by hand is too cumbersome, time-consuming and labor-intensive, so it is improved to complete the automatic winding operation by means of the motor transmission mechanism of the sewing machine. The winding mechanism of the existing sewing machine has a complex structure, large volume, and 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 stability of the sewing machine. , that is, the failure rate is high. In addition, the existing sewing machine winding mechanism requires manual observation of the winding situation at any time during the winding process to prevent the winding from being too full, resulting in low automation and low work efficiency.

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 a technical problem to be solved urgently in the industry.

Contents 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 proposes a built-in sewing machine winding mechanism. The sewing machine includes a casing and a motor transmission mechanism arranged in the casing. The driven gear that rotates 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 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 sewing machine. Inside the case, the bobbin can be fixed 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 bobbin winding shaft mechanism that can rotate with the rotation of the bevel gear mechanism. , shift fork mechanism, the bobbin mechanism includes an annular rubber ring that can counteract and rotate with the bevel gear mechanism, and a bobbin that can rotate with the rotation of the annular rubber ring. Through the middle part of the bracket and the connecting rod, extending to the upper end of the connecting rod, the bobbin is fixed on the upper end and can rotate with the rotation of the annular rubber ring so that it can be wound; one end of the connecting rod is connected to the bracket through a rivet rotation The other end is rotatably connected to the winding shaft through a bolt 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 winding shaft mechanism swings along with the connecting rod and then the ring rubber The ring is linked with the bevel gear mechanism and drives the winding shaft to rotate to finally wind the bobbin; at the corresponding position of the bobbin, there is a cone that can withstand the bobbin so that the winding shaft moves away from the cone as the winding amount of the bobbin increases. The direction of the gear mechanism moves and then the annular rubber ring breaks away from the limiting eccentric wheel of the bevel gear mechanism and finally stops the winding operation of the bobbin.

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 the first retaining ring and linked with the driven gear.

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

Preferably, an open slot is provided at the upper end, and a clip spring capable of securing the bobbin is embedded in the open slot.

Preferably, the bracket is fixed in the casing, the upper end passes through the casing and is arranged in the accommodation groove, and the limit eccentric wheel is arranged in the accommodation groove and fixedly connected with the bracket through the casing.

Preferably, the end of the rivet is provided with a second retaining ring that 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 interlocking bevel gear mechanism, the winding shaft mechanism that can rotate with the rotation of the bevel gear mechanism, and the fork mechanism have simple structure, reasonable design, few parts and low production cost. The bracket of the present invention is fixed in the casing, the upper end passes through the casing and is arranged in the accommodation groove, the limit eccentric wheel is arranged in the accommodation groove and is fixedly connected with the bracket through the casing, and the upper end of the bobbin can be fixed and the limit eccentric wheel are set in the storage tank, and a panel can be covered on the storage tank, so that the winding mechanism of the sewing machine is not exposed outside the casing, the appearance of the sewing machine is simple and beautiful, and the winding mechanism of the sewing machine is built in the sewing machine , will not interfere with the normal operation of the sewing machine, and improve the working stability and 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 swing 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 to finally wind the bobbin. The operation is convenient, the winding speed is fast, and there will be no idling or slipping. Under the action of the bit eccentric wheel, the winding shaft will move away from the bevel gear mechanism with the increase of the bobbin winding amount, 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. The winding operation can be automatically stopped, with a high degree of automation and superior performance. The present invention truly realizes a built-in sewing machine winding mechanism with simple structure, small volume, reasonable and novel design, few parts, low production cost, high degree of automation and superior usability.

Description of drawings

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

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

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

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

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

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

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

detailed description

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

Referring to Fig. 1 to Fig. 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 when working, 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 a storage slot that can accommodate the bobbin 100 at the position corresponding to the position of the driven gear. Simple and practical, reasonable and innovative design.

The sewing machine winding mechanism of the present invention is built in the casing, the sewing machine winding mechanism can fix the bobbin 100 and can 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 so that it can rotate with the rotation of the driven gear, and a bobbin mechanism that can rotate with the rotation of the bevel gear mechanism. 1. The shift fork mechanism that can swing the connecting rod 300, and the bracket 200 can fix the winding mechanism of the sewing machine in the casing, the structure is simple, and the assembly 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 resist 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 that is fixedly connected with the annular rubber ring 501, passes through the middle part of the bracket 200 and the connecting rod 300 in turn, and extends to the upper end of the connecting rod 300, and the lower end, the middle part and the upper end are integrally formed. structure. The upper end of the bobbin 502 is provided with an open slot 503 , and a snap spring 504 is embedded in the open slot 503 to fix the bobbin 100 . The bobbin 100 is fastened on the upper end by the jumper 504, and the bobbin 100 can rotate with the rotation of the winding shaft 502 (that is, the bobbin 100 can rotate with the rotation of the annular rubber ring 501) so that it 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 latch 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 allows 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 bobbin mechanism swings with the connecting rod 300, and then the annular rubber ring 501 is linked with the bevel gear mechanism and drives the bobbin 502 to rotate. Wind the bobbin 100. A limit eccentric wheel 700 is provided at the corresponding position of the bobbin core 100, and the limit eccentric wheel 700 can withstand the bobbin core 100 so that the bobbin 502 moves away from the bevel gear mechanism as the winding amount of the bobbin core 100 increases. Direction movement further makes the annular rubber ring 501 disengage from the bevel gear mechanism and finally stops the winding operation of the bobbin core 100 .

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 bobbin 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 there are few parts. Low production cost. The bracket 200 is fixed in the casing by 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 arranged in the accommodating groove, and the limit fixedly connected with the bracket 200 The position eccentric wheel 700 passes through the casing and is arranged in the accommodating groove, and the upper end of the fixed bobbin 100 and the limit eccentric wheel 700 are all arranged in the accommodating groove, and a panel can be covered on the accommodating groove simultaneously. When there is no need for winding operation, the panel cover is set on the accommodating slot, and the sewing machine winding mechanism is not exposed outside the casing, effectively preventing the independent and external sewing machine winding mechanism from interfering with the production process, ensuring the sewing machine's working efficiency and The work is stable and reliable, and the overall appearance of the sewing machine is smooth and smooth, simple and beautiful. When performing the winding operation, open the panel, fix the bobbin 100 on the upper end, then cover the panel, and turn the shift fork mechanism to make the connecting rod 300 swing along the rivet 301, because the winding shaft 502 passes through the connecting rod 300 so when the connecting rod 300 swings, it drives the bobbin mechanism to swing and makes the bobbin mechanism conflict with the bevel gear mechanism. The annular rubber ring 501 of the bobbin 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 a place at all, does not affect the normal sewing work of the sewing machine, and improves the working efficiency of the sewing machine. Simple, reasonable and novel in design, the winding mechanism of the sewing machine hidden in the casing and the storage tank does not affect the overall structure of the sewing machine, making the sewing machine simple and beautiful in appearance.

In addition, the sewing machine winding mechanism of the present invention changes the traditional structural style. 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 slipping and idling, which affects the winding efficiency, and the annular rubber ring 501 is easy to wear and has a short service life. The sewing machine winding mechanism of the present invention rotates and fixes a bevel gear mechanism 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. The bevel gear 402 It is tightly meshed with the driven gear, so there will be no poor contact, idling, slipping, etc., high working stability and long service life. The annular rubber ring 501 arranged on the winding shaft 502 can abut against the bevel gear 402 and rotate with the rotation of the bevel gear 402. 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 support 200 is also provided with a connecting rod 300, one end of the connecting rod 300 is rotatably connected with the support 200 through a rivet 301, and the other end is rotatably connected with the bobbin 502 through a latch 505. The limit gap 201 for the bobbin 502 to swing along with the connecting rod 300. When the connecting rod 300 swings along the rivet 301, the bobbin 502 swings in the limit gap 201 along with the connecting rod 300, and can be moved 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, the design is reasonable and novel.

When the external force acts on the shift fork mechanism, and the connecting rod 300 is swung by the reversing shift fork 601, the bobbin 502 swings in the limit gap 201 with the swing of the connecting rod 300, and the ring rubber fixed on the lower end The ring 501 is against the outer wall of the bevel gear 402 to realize the joint effect between the annular rubber ring 501 and the bevel gear 402. The annular rubber ring 501 can rotate with the rotation of the bevel gear 402, and the winding shaft 502 is rotated with the annular rubber ring 501. The bobbin 100 fixed on the upper end by the snap spring 504 rotates with the rotation of the bobbin shaft 502, and finally completes the winding operation of the bobbin 100. When the winding amount of the bobbin 100 reaches a certain amount, the bobbin 100 conflicts with the limit eccentric wheel 700, and as the winding amount of the bobbin 100 continues to increase, the interaction between the bobbin 100 and the limit eccentric wheel 700 The greater the force, the limiting eccentric wheel 700 is fixed on the bracket 200 and remains stationary. Therefore, as the interaction force increases, the bobbin 100 moves away from the limiting eccentric wheel 700, that is, the bobbin 502 moves with the As the winding amount of the bobbin 100 increases, it moves away from the bevel gear mechanism so that the annular rubber ring 501 is separated from the bevel gear mechanism to realize the separation effect between the annular rubber ring 501 and the bevel gear 402, and finally stops the bobbin 100 winding operations to realize automatic stop work. The operation is convenient, the winding speed is fast, the bobbin 100 is fixed on the upper end by the circlip 504, there will be no idling or slipping between the bobbin 502 and the bobbin 100, the work is stable and reliable, the practicability is strong, and it is limited Under the action of the bit eccentric wheel 700, the winding shaft 502 will move away from the bevel gear mechanism as the winding amount of the bobbin core 100 increases, so that when the thread is full, the annular rubber ring 501 will automatically move away from the bevel gear mechanism and then stop the shuttle. 100-core winding operation, the winding operation can be automatically stopped, with a high degree of automation, superior performance and high work efficiency.

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

The above is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structural transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technical fields, shall be The same reasoning is included in the patent protection scope of the present invention.

Claims (6)

1. A kind of built-in sewing machine winding mechanism, described sewing machine comprises casing, is located at the motor transmission mechanism in described casing, and described motor transmission mechanism comprises motor, the main shaft that can rotate with the work of described motor 1. A driven gear that 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 a receiving groove that can accommodate the bobbin at the position corresponding to the position of the driven gear. The upper cover of the accommodating tank is provided with a panel, which is characterized in that the sewing machine winding mechanism is built in the casing and can fix the bobbin and complete the automatic winding operation of the bobbin. The wire mechanism includes a bracket, a connecting rod, 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 bevel gear mechanism resists and rotates the annular rubber ring, the winding shaft that can rotate with the rotation of the annular rubber ring, the winding shaft includes a lower end fixedly connected with the annular rubber ring, passes through the bracket and The middle part of the connecting rod extends to the upper end of the connecting rod, the bobbin is fixed on the upper end and can rotate with the rotation of the annular rubber ring so as to be able to wind; One end of the connecting rod is rotatably connected to the bracket through a rivet, and the other end is rotatably connected to the winding shaft through a bolt so that the connecting rod can swing along the rivet, and the fork mechanism can move the The connecting rod swings along the rivet so that the winding shaft mechanism swings with the swinging of the connecting rod, and then the annular rubber ring is linked with the bevel gear mechanism and drives the winding shaft to rotate, finally making the winding shaft mechanism The bobbin is wound; at the position corresponding to the bobbin, there is a device that can withstand the bobbin so that the bobbin shaft moves away from the bevel gear mechanism as the winding amount of the bobbin increases. The direction of movement and then make the annular rubber ring break away from the limiting eccentric wheel of the bevel gear mechanism and finally stop the winding operation of the bobbin. 2. A built-in sewing machine winding mechanism according to claim 1, wherein the bevel gear mechanism includes a bevel gear shaft fixed on the bracket, which is sleeved on the The bevel gear on the bevel gear shaft and linked with the driven gear. 3. A built-in sewing machine winding mechanism according to claim 1 or 2, characterized in that the fork mechanism includes a reversing fork and a spring. 4. A built-in sewing machine winding mechanism according to claim 3, characterized in that, said upper end is provided with an open slot, and said open slot is embedded with a retaining spring capable of clamping said bobbin . 5. A built-in sewing machine winding mechanism according to claim 4, characterized in that, the bracket is fixed in the casing, and the upper end passes through the casing and is arranged in the container The limiting eccentric wheel is arranged in the accommodating groove and passes through the casing and is fixedly connected with the bracket. 6 . The built-in thread winding mechanism of sewing machine according to claim 5 , characterized in that, the end of the rivet is provided with a second stop ring which can make the connecting rod rotatably fixed on the bracket. 6 .