Full thread springboard with thread cutting function for sewing machine

Abstract

The utility model relates to the technical field of sewing machine accessories, in particular to a full thread springboard for a sewing machine with a thread cutting function, which comprises a springboard body, a stop plate is integrally formed at one end of the springboard body, a tool apron is integrally formed at the other end of the springboard body, and a tool bit is clamped on the other side of the tool apron. A mounting hole is formed in the middle of the springboard body; inserting grooves are formed in the two sides of the interior of the tool apron correspondingly, and elastic pieces are arranged at the top end and the bottom end of the tool apron correspondingly. The tool apron, the tool bit, the elastic piece, the clamping head, the penetrating groove and the inserting groove are used in cooperation, the elastic piece is pressed towards the inner side of the tool apron, the end of the elastic piece is pushed forwards towards the inner side of the penetrating groove after the elastic piece is pressed, the end of the elastic piece penetrates into the penetrating groove, and then the protruding block at the end of the clamping head retreats from the penetrating groove. When the springboard is replaced, the whole springboard body does not need to be replaced, and therefore waste is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machine accessories, in particular to a full-thread springboard for a sewing machine with a thread cutting function. Background Art

[0002] At present, a bobbin winder is provided on a sewing machine, and a full-thread springboard is provided on the bobbin pressure arm handle of the bobbin winder. The full-thread springboard includes a main body for fixing the bobbin pressure arm handle and a stop plate forged integrally with the main body. The stop plate controls the winding amount of the bobbin. When the winding amount reaches the requirement, the stop plate drives the bobbin pressure arm handle to move and stop winding.

[0003] For example, a full-thread springboard for a sewing machine with a thread cutting function disclosed in the authorization announcement number CN201809607U includes a body and a stop plate, and its special feature is that the end of the body opposite to the extension direction of the stop plate is extended, the extended section is tilted relative to the plane of the body, and a blade edge is provided on the side of the body away from the stop plate. The beneficial effects of adopting the above technical solution are: having dual functions, saving costs, improving work efficiency, effectively improving the use effect of the sewing machine, and being safe and reliable.

[0004] The above device has a simple structure and reasonable design, can meet the needs of users, and has great promotion value;

[0005] Although the above patent has the dual functions of stopping and cutting, the cutting blade is integrally formed with the strip, and the blade will wear during cutting. The stopping structure at the other end of the springboard does not wear much. When replacing the blade of the full-line springboard in the above patent, the springboard needs to be replaced as a whole, which will cause waste. Utility Model Content

[0006] The utility model aims to provide a full-thread springboard for a sewing machine with a thread cutting function, so as to solve the problems raised in the above-mentioned background technology.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A full-thread springboard for a sewing machine with a thread cutting function comprises a springboard body, one end of which is integrally formed with a stop plate, the other end of which is integrally formed with a knife seat, the other side of which is clamped with a knife head, a mounting hole is provided in the middle of the springboard body, and the knife head and the knife seat are connected by a plug-in mechanism.

[0009] Preferably, the plug-in mechanism comprises slots provided on both sides of the knife seat, the top and bottom ends of the knife seat are provided with elastic members, a through groove is provided through the slot on one side close to the end of the elastic member, and clamps are provided on both ends of the knife head on one side close to the knife seat;

[0010] Preferably, a pressure plate is movably mounted on the bottom end of the stop plate, and a plurality of connecting rods are arranged side by side on the top end of the stop plate, and the bottom ends of the plurality of connecting rods pass through the stop plate and are fixedly connected to the top upper surface of the pressure plate;

[0011] Preferably, a spring is provided below the top end of the connecting rod, and the bottom end of the spring is fixedly connected to the upper end surface of the stop plate;

[0012] Preferably, a guide groove is provided at the bottom end of one side of the stop plate close to the pressure plate, and the left side of the stop plate is slidably connected to the inner wall of the guide groove;

[0013] Preferably, the lower end surface of the pressing plate on the side away from the guide groove is an arc-shaped structure.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. A full-line springboard for a sewing machine with a thread cutting function is used in conjunction with a knife seat, a knife head, an elastic member, a clamping head, a through groove and a slot. The elastic member is pressed toward the inner side of the knife seat. After the elastic member is pressed, its end is pushed forward toward the inner side of the through groove. After the end of the elastic member penetrates into the through groove, the protrusion at the end of the clamping head is withdrawn from the through groove. Then the knife head can be pulled out from the side away from the knife seat. In this way, when replacing, there is no need to replace the entire springboard body, thereby avoiding waste.

[0016] 2. The full-thread springboard for a sewing machine with a thread cutting function is used in conjunction with a stop plate, a pressure plate, a connecting rod and a spring. When the springboard body needs to be disassembled as a whole, the pressure plate can be lifted. When the pressure plate is raised, the connecting rod compresses the spring, so that the distance between the pressure plate and the stop plate is shortened, making it easy to take the springboard body out of the designated installation slot as a whole, making disassembly more labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the cutaway structure of the tool holder of the utility model;

[0019] Figure 3 This is a schematic diagram of the installation structure of the pressing plate of the utility model;

[0020] Figure 4 For the utility model Figure 1 Enlarged schematic diagram at point A in the middle.

[0021] In the figure: 1. springboard body; 2. stop plate; 3. knife seat; 4. knife head; 5. mounting hole; 6. slot; 7. elastic member; 8. through slot; 9. clamp; 10. pressure plate; 11. connecting rod; 12. spring; 13. guide groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] like Figure 1 and Figure 2 As shown, a technical solution provided by the utility model:

[0024] A full-thread springboard for a sewing machine with a thread cutting function comprises a springboard body 1, a stopper plate 2 is integrally formed at one end of the springboard body 1, a knife seat 3 is integrally formed at the other end of the springboard body 1, a knife head 4 is clamped at the other side of the knife seat 3, and a mounting hole 5 is provided in the middle of the springboard body 1; a plug-in mechanism comprises slots 6 provided at both sides of the knife seat 3, elastic members 7 are provided at the top and bottom of the knife seat 3, a through groove 8 is penetrated and provided at one side of the slot 6 close to the end of the elastic member 7, and clamps 9 are provided at both ends of the side of the knife head 4 close to the knife seat 3;

[0025] In this embodiment, when it is necessary to replace the cutter head 4 clamped by the cutter seat 3 on one side of the springboard body 1, the elastic member 7 is pressed toward the inner side of the cutter seat 3. After the elastic member 7 is pressed, its end will be pushed forward toward the inner side of the through groove 8. After the end of the elastic member 7 penetrates into the through groove 8, the protrusion at the end of the clamping head 9 is withdrawn from the through groove 8, and then the cutter head 4 can be pulled out from the side away from the cutter seat 3. In this way, when replacing, there is no need to replace the springboard body 1 as a whole, thereby avoiding waste.

[0026] like Figure 3 and Figure 4 As shown, a pressure plate 10 is movably installed at the bottom end of the stop plate 2, and a plurality of connecting rods 11 are arranged side by side at the top end of the stop plate 2. The bottom ends of the plurality of connecting rods 11 pass through the stop plate 2 and are fixedly connected to the upper surface of the top end of the pressure plate 10. A spring 12 is arranged below the top end of the connecting rod 11. The top end of the connecting rod 11 has a larger outer diameter to facilitate supporting the spring 12. The bottom end of the spring 12 is fixedly connected to the upper end surface of the stop plate 2. A guide groove 13 is provided at the bottom end of the side of the stop plate 2 close to the pressure plate 10. The left side of the stop plate 2 is slidably connected to the inner wall of the guide groove 13. The lower end surface of the side of the pressure plate 10 away from the guide groove 13 is an arc-shaped structure, and the arc-shaped bottom can be used to provide a better movement space for winding.

[0027] In this embodiment, a pressure plate 10 is movably installed at the bottom end of the stop plate 2 of the device. When the springboard body 1 needs to be disassembled as a whole, the pressure plate 10 can be lifted. When the pressure plate 10 is raised, it drives the connecting rod 11 to compress the spring 12. In this way, the distance between the pressure plate 10 and the stop plate 2 is shortened, which makes it easier to remove the springboard body 1 as a whole from the designated installation groove, making disassembly more labor-saving.

[0028] Working principle: when it is necessary to replace the cutter head 4 connected to the cutter seat 3 on one side of the springboard body 1, press the elastic member 7 toward the inner side of the cutter seat 3. After the elastic member 7 is pressed, its end will be pushed forward toward the inner side of the through groove 8. After the end of the elastic member 7 penetrates into the through groove 8, the protrusion at the end of the clamping head 9 is withdrawn from the through groove 8, and then the cutter head 4 can be pulled out from the side away from the cutter seat 3. The device is movably equipped with a pressing plate 10 at the bottom end of the stop plate 2. When the springboard body 1 needs to be disassembled as a whole, the pressing plate 10 can be lifted. When the pressing plate 10 is raised, it drives the connecting rod 11 to compress the spring 12, so that the distance between the pressing plate 10 and the stop plate 2 is shortened, which is convenient for removing the springboard body 1 as a whole from the designated installation groove.

[0029] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A full-thread springboard for a sewing machine with a thread cutting function, characterized in that: The utility model comprises a springboard body (1), a stop plate (2) is integrally formed at one end of the springboard body (1), a knife seat (3) is integrally formed at the other end of the springboard body (1), a knife head (4) is clamped on the other side of the knife seat (3), a mounting hole (5) is opened in the middle of the springboard body (1), and the knife head (4) and the knife seat (3) are connected by a plug-in mechanism.

2. A full-thread springboard for a sewing machine with thread cutting function according to claim 1, characterized in that: The plug-in mechanism comprises slots (6) provided on both sides of the interior of the knife seat (3); elastic members (7) are provided at the top and bottom ends of the knife seat (3); a through groove (8) is provided through one side of the slot (6) close to the end of the elastic member (7); and clamping heads (9) are provided at both ends of the side of the knife head (4) close to the knife seat (3).

3. A full-thread springboard for a sewing machine with thread cutting function according to claim 1, characterized in that: A pressure plate (10) is movably mounted at the bottom end of the stop plate (2), and a plurality of connecting rods (11) are arranged side by side at the top end of the stop plate (2). The bottom ends of the plurality of connecting rods (11) pass through the stop plate (2) and are fixedly connected to the upper surface of the top end of the pressure plate (10).

4. A full-thread springboard for a sewing machine with thread cutting function according to claim 3, characterized in that: A spring (12) is provided below the top end of the connecting rod (11), and the bottom end of the spring (12) is fixedly connected to the upper end surface of the stop plate (2).

5. The full-thread springboard for a sewing machine with thread cutting function according to claim 3, characterized in that: A guide groove (13) is provided at the bottom end of one side of the stop plate (2) close to the pressure plate (10), and the left side of the stop plate (2) is slidably connected to the inner wall of the guide groove (13).

6. A full-thread springboard for a sewing machine with thread cutting function according to claim 5, characterized in that: The lower end surface of the pressing plate (10) on the side away from the guide groove (13) is an arc-shaped structure.

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