Winding knife for winding of thread shuttle

Abstract

The utility model discloses a thread winding knife for thread shuttle thread winding, which comprises a thread winding knife, and two sides of the thread winding knife are respectively provided with a positioning area and a cutting area for cutting off a thread; the positioning area comprises an upper positioning part, a lower positioning part and a positioning protruding part located between the upper positioning part and the lower positioning part. An upper groove is formed between the positioning protruding part and the upper positioning part, and a lower groove is formed between the positioning protruding part and the lower positioning part. One side, far away from the cutting area, of the upper positioning part is an upper thread blocking flange, and one side, close to the positioning lug boss, of the upper groove is an upper positioning flange; the side, away from the cutting-off area, of the lower positioning part is a lower thread blocking flange, and the side, close to the positioning protruding part, of the lower groove is a lower positioning flange. The side, close to the upper groove, of the positioning protruding part is an upper coarse positioning flange, and the side, close to the lower groove, of the positioning protruding part is a lower coarse positioning flange. The utility model provides the thread winding knife capable of accurately positioning a sewing thread.

Description

Technical Field

[0001] This utility model relates to the field of textile equipment technology, and in particular to a winding knife for winding yarn on a shuttle. Background Technology

[0002] The thread length on a sewing machine bobbin is fixed. Therefore, the bobbin must be replaced after a set length of sewing is completed. Previously, this replacement process had to be done manually by the operator, which was inefficient. To improve work efficiency, technicians developed an automatic bobbin-changing and thread-winding machine, aiming to replace the complicated steps of manually changing the bobbin and winding the thread.

[0003] When performing bobbin thread winding, the winding machine must rely on the coordinated action of a robotic arm and a winding knife to complete the task. The robotic arm on the winding machine, which grips the bobbin (bobbin + bobbin sleeve), has a limited range of motion, therefore requiring the assistance of the winding knife to achieve precise thread positioning. Summary of the Invention

[0004] This invention provides a thread-winding knife for winding thread on a shuttle, thereby providing a thread-winding knife capable of accurately positioning the sewing thread.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A thread-winding knife for winding thread on a shuttle includes a thread-winding knife, with a positioning area and a cutting area for cutting the thread on both sides;

[0007] The positioning area includes an upper positioning part, a lower positioning part, and a positioning protrusion located between the upper positioning part and the lower positioning part;

[0008] An upper groove is formed between the positioning protrusion and the upper positioning part, and a lower groove is formed between the positioning protrusion and the lower positioning part;

[0009] The side of the upper positioning part away from the cutting area is the upper line blocking edge, and the side of the upper groove near the positioning protrusion is the upper positioning blocking edge.

[0010] The side of the lower positioning part away from the cutting area is the lower line blocking edge, and the side of the lower groove near the positioning protrusion is the lower positioning edge;

[0011] The side of the positioning protrusion closest to the upper groove and the side closest to the lower groove are respectively the upper coarse positioning stop and the lower coarse positioning stop.

[0012] Furthermore, the cutting area includes a guide port, a guide groove, and a protrusion for cooperating with the thread cutting block on the winding machine to cut the thread, wherein the protrusion is provided with a positioning port, and the guide port, guide groove, and positioning port are interconnected.

[0013] The width of the guide opening gradually converges from the side furthest from the guide groove to the side closest to the guide groove.

[0014] Furthermore, the winding knife is provided with an insertion hole, and the insertion hole has a protrusion.

[0015] Furthermore, the protrusion and the insertion hole are fixedly connected by hot melt adhesive.

[0016] Furthermore, it also includes a connecting plate, on which the winding knife is vertically mounted. The connecting plate has at least two bolt holes, and the connecting plate is fixed to the winding knife rotation drive of the winding machine by bolts provided in the bolt holes. The winding knife rotation drive is used to drive the winding knife to rotate.

[0017] Furthermore, it also includes a limiting protrusion, which is disposed on the side of the upper positioning portion away from the positioning protrusion.

[0018] Furthermore, the guide port is V-shaped.

[0019] Furthermore, the winding knife is arc-shaped.

[0020] Beneficial Effects: This utility model discloses a thread-winding knife for bobbin winding, which can be used for two types of bobbin cases. When applied to bobbin cases without a thread guide spring, the thread-winding knife uses the upper positioning part, the positioning protrusion, and the upper groove between them in the positioning area to achieve precise positioning of the thread to complete the thread-leading operation, and the cutting area is responsible for completing the thread-cutting operation. When applied to bobbin cases equipped with a thread guide spring, the thread-winding knife also uses the upper positioning part, the positioning protrusion, and the upper groove between them in the positioning area to achieve precise positioning of the thread to complete the thread-leading operation. In addition, the thread-winding knife pulls the thread onto the thread guide spring through the lower positioning part, the positioning protrusion, and the lower groove between them in the positioning area, and the cutting area is used to complete the thread-cutting operation. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the structure of a winding knife for winding thread on a shuttle disclosed in this utility model;

[0023] Figure 2 This is a top view of a wire-winding knife for winding thread using a shuttle, as disclosed in this utility model;

[0024] Figure 3 This is a front view of a wire winding knife for winding thread using a shuttle disclosed in this utility model;

[0025] Figure 4 This is a schematic diagram of the cooperation between a winding knife for winding thread, a winding knife rotation drive, and a thread cutting block disclosed in this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of a shuttle disclosed in this utility model;

[0027] Figure 6 This is a schematic diagram of the bobbin sleeve of a shuttle equipped with a thread guide spring, as disclosed in this utility model.

[0028] In the picture:

[0029] 121. Thread winding knife;

[0030] 122. Rotary drive for winding knife;

[0031] 123. Positioning area; 1231. Upper positioning part; 1232. Lower positioning part; 1233. Positioning protrusion; 1234. Upper guard line; 1235. Upper positioning guard line; 1236. Lower guard line; 1237. Lower positioning guard line; 1238. Upper coarse positioning guard line; 1239. Lower coarse positioning guard line;

[0032] 124. Cutting area; 1241. Guide port; 1242. Guide groove; 1243. Protrusion; 1244. Positioning port;

[0033] 125. Connecting plate;

[0034] 126. Limiting protrusion;

[0035] 127. Cut the wire block;

[0036] 71. Shuttle sleeve; 711. Shuttle case; 716. Thread guide groove; 720. Thread guide spring. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] This embodiment provides a winding knife for winding thread on a shuttle, such as... Figure 1 and Figure 3 As shown, it includes a thread winding knife 121, with a positioning area 123 and a cutting area 124 for cutting the sewing thread on both sides;

[0039] The positioning area 123 includes an upper positioning part 1231, a lower positioning part 1232, and a positioning protrusion 1233 located between the upper positioning part 1231 and the lower positioning part 1232;

[0040] An upper groove is formed between the positioning protrusion 1233 and the upper positioning part 1231, and a lower groove is formed between the positioning protrusion 1233 and the lower positioning part 1232;

[0041] The side of the upper positioning part 1231 away from the cutting area 124 is the upper line blocking edge 1234, and the side of the upper groove near the positioning protrusion 1233 is the upper positioning edge 1235.

[0042] The side of the lower positioning part 1232 away from the cutting area 124 is the lower line blocking edge 1236, and the side of the lower groove near the positioning protrusion 1233 is the lower positioning edge 1237.

[0043] The positioning protrusion 1233 has an upper coarse positioning stop 1238 and a lower coarse positioning stop 1239 on the side near the upper groove and the side near the lower groove, respectively.

[0044] This embodiment discloses a thread-winding knife for bobbin winding, which can be used for two types of bobbin cases. When applied to a bobbin case without a thread guide spring 720, the thread-winding knife 121 uses the upper positioning part 1231, the positioning protrusion 1233, and the upper groove between them in the positioning area 123 to achieve precise positioning of the thread and complete the thread-leading operation. At the same time, the cutting area 124 is responsible for completing the thread-cutting operation. When applied to a bobbin case equipped with a thread guide spring 720, the thread-winding knife 121 also uses the upper positioning part 1231, the positioning protrusion 1233, and the upper groove between them in the positioning area 123 to achieve precise positioning of the thread and complete the thread-leading operation. In addition, the thread-winding knife 121 also pulls the thread onto the thread guide spring 720 through the lower positioning part 1232, the positioning protrusion 1233, and the lower groove between them in the positioning area 123, and the cutting area 124 is used to complete the thread-cutting operation.

[0045] In a specific embodiment, such as Figure 3 As shown, the cutting area 124 includes a guide port 1241, a guide groove 1242 and a protrusion 1243 for cooperating with the thread cutting block 127 on the winding machine to cut the sewing thread. The protrusion 1243 is provided with a positioning port 1244. The guide port 1241, the guide groove 1242 and the positioning port 1244 are interconnected.

[0046] From the side away from the guide groove 1242 to the side closer to the guide groove 1242, the width of the guide opening 1241 gradually narrows. The suture enters the positioning opening 1244 from the guide opening 1241 through the guide groove 1242. The protrusion 1243 rotates with the winding knife 121 and contacts the cutting block 127 fixed on the winding machine, thereby cutting the suture by squeezing. In this embodiment, the guide opening 1241 is V-shaped.

[0047] In a specific embodiment, such as Figure 2 As shown, the winding knife 121 is provided with an insertion hole, and a protrusion 1243 is provided inside the insertion hole;

[0048] Because the protrusion 1243 needs to cooperate with the thread cutting block 127, it is prone to wear. Wear can affect the cutting effect of the thread. Therefore, in actual use, the protrusion 1243 can be fixedly connected to the socket with hot melt adhesive. When the protrusion 1243 is worn and needs to be replaced, the protrusion 1243 can be removed by melting the hot melt adhesive. Alternatively, the protrusion 1243 can be connected to the socket by interference fit.

[0049] In a specific embodiment, such as Figure 2 and Figure 3As shown, it also includes a connecting plate 125, on which the winding knife 121 is welded and fixed. The connecting plate 125 has at least two bolt holes, and the connecting plate 125 is fixed to the object by bolts provided in the bolt holes. Figure 4 The winding knife rotation drive 122 of the winding machine shown is positioned at two or more points to prevent the connecting plate 125 from rotating relative to the winding knife rotation drive 122, thus ensuring positioning accuracy. The winding knife rotation drive 122 is used to drive the winding knife 121 to rotate.

[0050] In this embodiment, the winding knife 121 is arc-shaped to ensure that the winding knife 121 does not interfere with the bobbin sleeve 71 when rotating. The winding knife rotation drive 122 includes at least a winding knife mounting base for fixing the winding knife 121 and a motor for driving the winding knife mounting base to rotate. The motor can directly drive the winding knife mounting base to rotate, or a synchronous belt drive can be used to drive the winding knife mounting base to rotate (the motor output shaft is connected to the driving pulley, and the winding knife mounting base is connected to the driven pulley) to facilitate the layout of the components on the winding machine.

[0051] When it is necessary to wind the thread, the robotic arm grabs the bobbin, one end of the thread is located in the thread blowing module responsible for providing the thread, and the other end is blown onto the bobbin by the thread blowing module (the bobbin is equipped with an adsorption component, which can be made of materials such as Velcro, coarse fiber or sanding belt, so as to increase the friction and make the thread end stick to the adsorption component when the bobbin rotates).

[0052] When the thread is wound onto the bobbin and needs to be guided, the thread needs to be positioned so that it can be wound into the bobbin. The winding knife 121 rotates clockwise under the drive of the winding knife rotation drive 122. The thread first contacts the upper thread stop 1234. The mechanical arm that grasps the bobbin moves along the axis of the winding knife rotation drive 122. The thread contacts the upper coarse positioning stop 1238. Then the winding knife 121 continues to rotate clockwise under the drive of the winding knife rotation drive 122. The thread contacts the bottom of the upper groove, completing the initial positioning of the thread. At this time, the mechanical arm that grasps the bobbin moves along the axis of the winding knife rotation drive 122 until the thread contacts the upper positioning stop 1235. At this time, the thread is precisely positioned relative to the plane opening of the bobbin (the opening at the bottom of the bobbin case 711 for inserting the bobbin), so that the thread can be wound into the bobbin from the thread pull groove 716.

[0053] When applied to, for example Figure 6When the bobbin case 71 shown has a bobbin sleeve 71 with a thread guide spring 720, the thread needs to be pulled onto the thread guide spring 720. Similarly, the thread needs to be positioned. The winding knife 121 rotates clockwise under the drive of the winding knife rotation drive 122. The thread first contacts the lower thread stop 1236. The mechanical arm that picks up the bobbin moves along the axis of the winding knife rotation drive 122. The thread contacts the lower coarse positioning stop 1239. Then, the winding knife 121 continues to rotate clockwise under the drive of the winding knife rotation drive 122 until the thread contacts the bottom of the lower groove, completing the initial positioning of the thread. At this time, the mechanical arm that picks up the bobbin moves along the axis of the winding knife rotation drive 122 until the thread contacts the lower positioning stop 1237. At this time, the thread completes the precise positioning relative to the thread guide spring 720 (positioned to the gap between the bobbin case 711 and the thread guide spring 720).

[0054] When it is necessary to cut the thread, the winding knife 121 reverses under the drive of the winding knife rotation drive 122. The thread enters the positioning port 1244 from the guide port 1241 through the guide groove 1242. The protrusion 1243 rotates with the winding knife 121 and contacts the thread cutting block 127 fixed on the winding machine, and cuts the thread by squeezing.

[0055] In a specific embodiment, such as Figure 3 As shown, it also includes a limiting protrusion 126, which is disposed on the side of the upper positioning part 1231 away from the positioning protrusion 1233, to prevent the sewing thread from sliding out of the winding knife 121 from the upper guard edge 1234.

[0056] This application discloses a winding knife for winding thread onto a shuttle, applicable to two types of shuttle core sleeves 71 (one type such as...). Figure 6 As shown, it is equipped with a wire-passing spring 720, another type such as Figure 5 As shown, the following types of bobbin sleeves are not equipped with a thread guide spring (720): C28-high-speed small oblique bobbin sleeve, C29-Sunstar 380 bobbin sleeve, C30-flat-speed bobbin sleeve, C32-large embroidery bobbin sleeve, C34-2010 bobbin sleeve, C40-3 times large bobbin sleeve, C07-761 buttonhole bobbin sleeve, C03-DY bobbin sleeve, C04-246 bobbin sleeve, etc.

[0057] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A threader for winding a thread around a thread shuttle, characterized in that It includes a thread-winding knife (121), with a positioning area (123) on one side and a cutting area (124) for cutting the suture thread on the other side; The positioning area (123) includes an upper positioning part (1231), a lower positioning part (1232), and a positioning protrusion (1233) located between the upper positioning part (1231) and the lower positioning part (1232); An upper groove is formed between the positioning protrusion (1233) and the upper positioning part (1231), and a lower groove is formed between the positioning protrusion (1233) and the lower positioning part (1232); The side of the upper positioning part (1231) away from the cutting area (124) is the upper line blocking edge (1234), and the side of the upper groove close to the positioning protrusion (1233) is the upper positioning edge (1235). The side of the lower positioning part (1232) away from the cutting area (124) is the lower line blocking edge (1236), and the side of the lower groove close to the positioning protrusion (1233) is the lower positioning edge (1237). The positioning protrusion (1233) has an upper coarse positioning stop (1238) on the side near the upper groove and a lower coarse positioning stop (1239) on the side near the lower groove.

2. A threader according to claim 1, wherein, The cutting area (124) includes a guide port (1241), a guide groove (1242) and a protrusion (1243) for cooperating with the thread cutting block (127) on the winding knife (121) to cut the sewing thread. The protrusion (1243) is provided with a positioning port (1244), and the guide port (1241), guide groove (1242) and positioning port (1244) are interconnected. The width of the guide opening (1241) gradually narrows from the side furthest from the guide groove (1242) to the side closest to the guide groove (1242).

3. A threader according to claim 1, wherein, The winding knife (121) is provided with an insertion hole, and a protrusion (1243) is provided inside the insertion hole.

4. A threader according to claim 3, wherein, The protrusion (1243) and the socket are fixedly connected by hot melt adhesive.

5. A threader according to claim 1, wherein, It also includes a connecting plate (125), on which the winding knife (121) is vertically mounted. The connecting plate (125) has at least two bolt holes. The connecting plate (125) is fixed to the winding knife rotation drive (122) of the winding machine by bolts provided in the bolt holes. The winding knife rotation drive (122) is used to drive the winding knife (121) to rotate.

6. A thread spooling knife for spooling thread from a thread spool according to claim 5, wherein, It also includes a limiting protrusion (126), which is disposed on the side of the upper positioning part (1231) away from the positioning protrusion (1233).

7. A thread spooling knife for spooling thread from a thread spool according to claim 2, wherein, The guide port (1241) is V-shaped.

8. A thread spooling knife for spooling thread from a thread spool according to claim 1, wherein, The winding knife (121) is arc-shaped.

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