Sewing thread supply mechanism of sewing machine
The design of the guide plate and the thread passing plate simplifies the structure of the thread supply mechanism, solves the problem of the upper decorative thread needing to pass through the inside of the machine casing, realizes the neat wiring of the upper decorative thread and avoids oil contamination, and improves the overall messy wiring of the sewing machine.
Patent Information
- Application Number
- CN202422540203.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2025-09-09
- Estimated Expiration
- 2034-10-21
AI Technical Summary
The existing thread supply mechanism is complex in design, and the upper decorative thread needs to pass through the interior of the casing, resulting in messy wiring and oil contamination.
A wire guide and thread passing plate design is adopted. The wire guide and thread passing plate are respectively arranged on the wire side and working side of the casing. The wire guide has guide holes for the upper thread and the upper decorative thread, and the thread passing plate has through holes for the upper thread and the upper decorative thread, which simplifies the structure and directly guides the upper decorative thread to the sewing needle position to avoid passing through the interior of the casing.
The design of the thread supply mechanism is simplified, which avoids thread breakage and oil contamination inside the upper decorative thread, ensures neat wiring of the upper and upper decorative threads, and reduces wiring clutter.
Smart Images
Figure CN223316892U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a suture supply mechanism of a sewing machine, in particular to a suture supply mechanism with a simple structure. Background Art
[0002] Existing suture supply mechanism 60 is as follows Figure 1 As shown, the thread supply mechanism 60 is used in a four-needle, six-thread sewing machine 600, where the four-needle, six-thread system consists of four facing threads, a bottom thread, and an upper decorative thread (a sparse thread). The thread supply mechanism 60 comprises a housing 61 and a cam mechanism 62 disposed inside the housing 61 to drive the upper decorative thread. The housing 61 has a thread outlet 611 facing the cam mechanism 62. The upper decorative thread is guided through the cam mechanism 62 and the thread outlet 611 to the position of the sewing needle, where it is sewn together with the four facing threads.
[0003] However, the cam mechanism 62 and the thread outlet 611 require the upper thread to pass through the interior of the housing 61, complicating the overall design of the thread supply mechanism 60. Furthermore, when the upper thread is disconnected within the housing 61, the housing 61 must be opened to adjust the connection between the cam mechanism 62 and the upper thread. Furthermore, the sewing machine 600 includes a lubrication system (not shown) mounted on one side of the cam mechanism 62. The oil released by this lubrication system could contaminate the upper thread as it passes through the cam mechanism 62. Utility Model Content
[0004] The main purpose of the present invention is to improve the implementation problems caused by the complexity of the existing suture supply mechanism. Another purpose is to improve the problem of messy wiring caused by the simplification of the overall design of the existing suture supply mechanism.
[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention to solve the technical problem is:
[0006] A thread supply mechanism for a sewing machine comprises a housing, a guide plate, and a thread passing plate. The housing is divided into a guide side and a work side based on a working area. The guide plate is disposed on the guide side of the housing, and the thread passing plate is disposed on the work side of the housing. The thread passing plate opposes the guide plate and has a plurality of upper thread guide holes and at least one upper decorative thread guide hole located opposite the guide plate. The thread passing plate has a plurality of upper thread through holes and at least one upper decorative thread through hole. The at least one upper decorative thread through hole and the at least one upper decorative thread guide hole on the outside of the housing are directly connected and do not intersect with the direct connections between the upper thread through holes and the upper thread guide holes on the outside of the housing.
[0007] In one embodiment, the thread supply mechanism has a balance wheel disposed on the working side of the housing and a thread beating rod connected to the balance wheel, and the thread beating rod has a plurality of surface thread through holes and at least one upper decorative thread through hole.
[0008] In one embodiment, the thread supply mechanism has a plurality of upper thread guide rods disposed on the housing and at least one upper decorative thread guide rod parallel to the upper thread guide rods.
[0009] In one embodiment, the thread supply mechanism has a plurality of upper thread guide rods disposed on the housing and at least one upper decorative thread guide rod parallel to the upper thread guide rods.
[0010] In one embodiment, the thread supply mechanism has a mounting block disposed on the housing and provided with the upper thread guide rods and the at least one upper decorative thread guide rod.
[0011] In one embodiment, the suture supply mechanism has an auxiliary thread passing plate provided on the casing and located between the surface thread guide rods, the at least one upper decorative thread guide rod and the thread passing plate. The auxiliary thread passing plate has a plurality of surface thread auxiliary through-holes and at least one upper decorative thread auxiliary through-hole located on the relatively outer side of the auxiliary thread passing plate. The direct connection between the at least one upper decorative thread auxiliary through-hole and the at least one upper decorative thread through-hole on the outer side of the casing is not intertwined with the direct connection between the surface thread auxiliary through-holes and the surface thread through-holes on the outer side of the casing.
[0012] In one embodiment, the number of the at least one upper decorative line via hole is two, and the two upper decorative line via holes are located on the same side of the opposite outer sides of the line plate.
[0013] Compared with the prior art, the present invention has the following advantages and effects:
[0014] Compared to conventional designs, this thread supply mechanism eliminates the need for a cam mechanism and thread outlet, allowing the at least one upper decorative thread to be guided through the guide plate and thread guide plate to the sewing needle position, thereby alleviating the problem of complex sewing machine structural design. Furthermore, the guide plate and thread guide plate are designed to neatly route the at least one upper decorative thread and the upper threads without interlacing them, thereby alleviating the problem of cluttered wiring in the sewing machine caused by the simplified design of the thread supply mechanism. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a structural schematic diagram of an existing suture supply mechanism.
[0016] Figure 2 It is a structural schematic diagram of the suture supply mechanism of the present invention.
[0017] Figure 3 It is a partial schematic diagram of the suture supply mechanism of the present invention.
[0018] Figure 4This is a schematic diagram of the implementation of the suture supply mechanism of the present invention.
[0019] Figure 5 It is a top view schematic diagram of the suture supply mechanism of the present invention.
[0020] Among them, 200: sewing machine; 201: thread outlet rack; 20: thread supply mechanism; 21: casing; 211: wire side; 212: working side; 22: wire guide; 221: upper thread guide hole; 222: upper decorative thread guide hole; 23: thread passing plate; 231: upper thread through hole; 232: upper decorative thread through hole; 24: balance wheel; 25: thread punching rod; 251: upper thread perforation; 252: upper decorative thread perforation; 26: upper thread guide rod; 27: upper decorative thread guide rod; 28: mounting block; 281: fixing hole; 29: auxiliary thread passing plate; 291: upper thread auxiliary through hole; 292: upper decorative thread auxiliary through hole; 30: sewing thread; 301: upper thread; 302: upper decorative thread; 600: sewing machine; 60: thread supply mechanism; 61: casing; 611: thread outlet; 62: cam device.
[0021] The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application. DETAILED DESCRIPTION
[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.
[0023] Example
[0024] See also Figures 2 to 4The present invention provides a thread supply mechanism 20 for a sewing machine. The sewing machine 200 includes a plurality of thread outlet frames 201. The thread supply mechanism 20 has a housing 21, a thread guide 22, and a thread passing plate 23. The housing 21 is based on the outer shell of the sewing machine 200. The housing 21 is divided into a thread guide side 211 and a working side 212 based on the working area. The thread guide 22 is located on the thread guide side 211 of the housing 21, and the thread passing plate 23 is located on the working side 212 of the housing 21. The thread guide plate 23 is opposite to the guide plate 22. The thread outlet frames 201 guide the plurality of threads 30 to the guide plate 22. The guide plate 22 further guides the threads 30 guided by the thread outlet frames 201 to the working side 212. The thread guide plate 23 receives the threads 30 guided by the guide plate 22 and guides them to the position of the needle to facilitate the sewing operation of the sewing machine 200. It should be understood that although the sewing machine 200 is a four-needle six-thread sewing machine herein, the application of the thread supply mechanism 20 is not limited to four-needle six-thread sewing machines, but can be applied to any sewing machine that requires sewing decorative threads. On the other hand, the threads 30 are sewn onto the surface of the fabric. Based on their function, the threads 30 are divided into a plurality of upper threads 301 and at least one upper decorative thread 302. The upper threads 301 are used to sew the fabric, while the at least one upper decorative thread 302 is wrapped around the upper threads 301 to decorate the stitches of the upper threads 301 on the fabric and enhance the stability of the upper threads 301 on the fabric. Further explanation is provided. The thread guide 22 has a plurality of guide holes. These guide holes are divided into a plurality of upper thread guide holes 221 and at least one upper decorative thread guide hole 222 located on the opposite outer side of the thread guide 22, corresponding to the type of thread. Furthermore, the thread guide plate 23 has a plurality of through holes. These through holes are divided into a plurality of upper thread through holes 231 and at least one upper decorative thread through hole 232, corresponding to the type of thread. The guide holes of the wire guide plate 22 and the through holes of the thread passing plate 23 are capable of guiding the upper threads 301 and the at least one upper decorative thread 302 outside the housing 21 to the position where the sewing needle is located. It is further explained that the upper thread holes 231 of the thread passing plate 23 and the upper thread guide holes 221 of the lead wire plate 22 are the original configuration of the conventional thread supply mechanism 20 on the sewing machine 200. The present invention simplifies the configuration of the conventional thread supply mechanism by adding the at least one upper decorative thread guide hole 222 to the lead wire plate 22 and adding the at least one upper decorative thread hole 232 to the position of the thread passing plate 23, so that the at least one upper decorative thread 302 does not need to pass through the interior of the casing 21, but is guided to the sewing needle position through the outside of the casing 21, thereby improving the problem of complex design of the thread supply mechanism 20 in the conventional thread supply mechanism, and also solving the problem of the conventional upper decorative thread being broken inside the casing 21 and being difficult to reconnect, and the problem that the conventional upper decorative thread may be contaminated by oil inside the casing 21.Furthermore, the direct connection between the at least one upper decorative line via hole 232 and the at least one upper decorative line guide hole 222 on the outside of the housing 21 does not overlap with the direct connection between the surface line via holes 231 and the surface line guide holes 221 on the outside of the housing 21 , eg. Figure 4 As shown, and since the at least one upper decorative thread guide hole 222 of the guide plate 22 is located on the relatively outer side of the guide plate 22, the wiring of the upper threads 301 and the at least one upper decorative thread 302 is arranged neatly, while simplifying the sewing thread supply mechanism 20. At the same time, it is possible to improve the situation in which the overall wiring position of the sewing machine 200 is messy due to the shortening of the wiring distance of the upper threads 301 relative to the at least one upper decorative thread 302.
[0025] See also Figure 3 as well as Figure 4 To provide the sewing threads 30 to the sewing needle position, the sewing thread supply mechanism 20 further includes a balance wheel 24 disposed on the working side 212 of the housing 21 and a thread beating lever 25 connected to the balance wheel 24. The balance wheel 24 reciprocates about the axis during sewing, driving the thread beating lever 25 to swing back and forth. In this embodiment, the thread beating lever 25 has a plurality of upper thread through-holes 251 and at least one upper decorative thread through-hole 252. The upper thread through-holes 251 correspond to the upper thread through-holes 231 of the thread passing plate 23, allowing the upper threads 301 to pass through. The at least one upper decorative thread through-hole 252 corresponds to the at least one upper decorative thread through-hole 232 of the thread passing plate 23, allowing the at least one upper decorative thread 302 to pass through. As the thread beating lever 25 swings back and forth, the sewing threads 30 required for the sewing operation are provided to the sewing needle position. Furthermore, the at least one upper decorative thread through hole 252 is located on the relatively outer side of the thread punching rod 25 to correspond to the position of the at least one upper decorative thread through hole 232, thereby preventing the at least one upper decorative thread 302 from interlacing with the surface threads 301 and reducing the messy wiring of the sewing machine 200.
[0026] Please refer to Figure 3 as well as Figure 4The thread supply mechanism 20 includes a plurality of upper thread guide rods 26 disposed within the housing 21 and at least one upper decorative thread guide rod 27 arranged parallel to the upper thread guide rods 26. The upper thread guide rods 26 and the at least one upper decorative thread guide rod 27 are disposed between the thread punching rod 25 and the thread passing plate 23. These upper thread guide rods 26 and the at least one upper decorative thread guide rod 27 are used to adjust the thread tension of the threads 30 between the upper thread guide rods 26, the at least one upper decorative thread guide rod 27, and the thread punching rod 25, so that the thread supply amount during each reciprocating swing of the thread punching rod 25 corresponds to the thread supply required for different functions of the threads 30. The at least one upper decorative thread guide rod 27 is disposed on the outer sides of the upper thread guide rods 26 to correspond to the thread routing positions of the upper thread holes 231 and the at least one upper decorative thread hole 232 of the thread passing plate 23. In this embodiment, the thread supply mechanism 20 has a mounting block 28 provided on the housing 21 and provided with the upper thread guide rods 26 and the at least one upper decorative thread guide rod 27. The mounting block 28 has a plurality of fixing holes 281, and the fixing holes 281 can be inserted with a plurality of fixing parts (not shown in the figure). The mounting block 28 limits the displacement of the upper thread guide rods 26 and the at least one upper decorative thread guide rod 27 in the vertical direction, and fixes the adjusted positions of the upper thread guide rods 26 and the at least one upper decorative thread guide rod 27 with the fixing holes 281 and the fixing parts (not shown in the figure). The relative heights of the upper thread guide rods 26 and the at least one upper decorative thread guide rod 27 are not Figure 2 as well as Figure 3 For illustrative purposes only.
[0027] See also Figures 3 to 5 In one embodiment, the thread supply mechanism 20 has an auxiliary thread-passing plate 29 provided on the casing 21 and located between the surface thread guide rods 26, the at least one upper decorative thread guide rod 27 and the thread-passing plate 23. The auxiliary thread-passing plate 29 has a plurality of surface thread auxiliary through-holes 291 and at least one upper decorative thread auxiliary through-hole 292 located on the relatively outer side of the auxiliary thread-passing plate 29. The direct connection between the at least one upper decorative thread auxiliary through-hole 292 and the at least one upper decorative thread through-hole 232 on the outer side of the casing 21 is not staggered with the direct connection between the surface thread auxiliary through-holes 291 and the surface thread through-holes 231 on the outer side of the casing 21, so as to assist the wiring of the at least one upper decorative thread 302 and the surface threads 301 to be arranged neatly on the outer side of the casing 21.
[0028] On the other hand, based on the sewing requirements of the at least one upper decorative thread 302, the thread supply mechanism 20 can be used in a four-needle, seven-thread (four upper threads, one lower thread, and two upper decorative threads) sewing machine. Therefore, when there are two at least one upper decorative thread through-holes 232, the two upper decorative thread through-holes 232 are located on the same side of the thread guide plate 23, i.e., the two upper decorative thread through-holes 232 are not located on opposite sides of the thread guide plate 23, thereby avoiding a cluttered wiring arrangement of the sewing machine 200.
[0029] The above contents described in this specification are merely examples of the present invention. Those skilled in the art of the present invention may make various modifications, additions, or substitute similar methods to the specific embodiments described, as long as they do not deviate from the contents of this specification or exceed the scope defined by the claims, and shall fall within the scope of protection of the present invention.
Claims
1. A thread supply mechanism for a sewing machine, characterized in that: Include: A housing, divided into a conductor side and a working side based on a working area; a wire guide plate disposed on the wire side of the housing, the wire guide plate having a plurality of surface wire guide holes and at least one upper decorative wire guide hole located on an opposite outer side of the wire guide plate; as well as A wire passing plate is provided on the working side of the housing. The wire passing plate is opposite to the wire guide plate. The wire passing plate has a plurality of surface wire through holes and at least one upper decorative wire through hole. The direct connection between the upper decorative wire through hole and the upper decorative wire guide hole on the outside of the housing does not intersect with the direct connection between the surface wire through holes and the surface wire guide holes on the outside of the housing.
2. The thread supply mechanism for a sewing machine according to claim 1, characterized in that: The sewing thread supply mechanism comprises a balance wheel arranged on the working side of the housing and a thread beating rod connected to the balance wheel. The thread beating rod has a plurality of surface thread through holes and at least one upper decorative thread through hole.
3. The thread supply mechanism for a sewing machine according to claim 2, characterized in that: The sewing thread supply mechanism comprises a plurality of upper thread guide rods arranged on the housing and at least one upper decorative thread guide rod arranged in parallel with the upper thread guide rods.
4. The thread supply mechanism for a sewing machine according to claim 3, characterized in that: The thread supply mechanism comprises a mounting block which is arranged on the housing and on which the upper thread guide rods and the at least one upper decorative thread guide rod are arranged.
5. The thread supply mechanism for a sewing machine according to claim 4, characterized in that: The thread supply mechanism has an auxiliary thread passing plate arranged on the casing and located between the surface thread guide rods, the at least one upper decorative thread guide rod and the thread passing plate. The auxiliary thread passing plate has a plurality of surface thread auxiliary through holes and at least one upper decorative thread auxiliary through hole located on the relatively outer side of the auxiliary thread passing plate. The direct connection between the upper decorative thread auxiliary through hole and the upper decorative thread through hole on the outer side of the casing is not staggered with the direct connection between the surface thread auxiliary through holes and the surface thread through holes on the outer side of the casing.
6. The thread supply mechanism for a sewing machine according to claim 5, characterized in that: The number of the upper decorative line through holes is two, and the two upper decorative line through holes are located on the same side of the relatively outer sides of the line passing plate.