Scissors external line cutting device

Abstract

The utility model relates to sewing machine technical field provides a pair of scissors external type thread cutting device, including sewing machine, one side of sewing machine is equipped with first mount, is equipped with mobile drive arrangement on first mount, mobile drive arrangement drive connection has second mount, is equipped with thread cutting mechanism on second mount, thread cutting mechanism is equipped with the protective cover outward, the protective cover is equipped with the wire bundling groove, thread cutting mechanism is equipped with scissors, and the position of scissors is matched with the position of wire bundling groove. The utility model discloses the thread cutting mechanism of setting, realizes double thread cutting, avoids appearing the situation that the pair of scissors in sewing machine can not cut off the thread 100%, through the setting mobile drive arrangement, has realized the lift of second mount and thread cutting mechanism, avoids the influence sewing machine carries out the thread sewing action, through the setting protective cover and wire bundling groove, the protective cover can cover the pair of scissors and prevent hurting the hand, and wire bundling groove realizes the line restraint in wire bundling groove.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to an external scissor-type thread-cutting device. Background Technology

[0002] Sewing machines are essential in garment production. They are machines that use one or more threads to create one or more stitches on fabric, weaving or sewing together one or more layers of material. They are widely used in garment manufacturing. After sewing, the sewing thread needs to be cut. Currently, this is usually done manually by workers using scissors. This requires repeatedly picking up and putting down the scissors, which is cumbersome and can easily cause injury from repeated use of scissors.

[0003] Utility model patent CN220520805U discloses an automatic thread-cutting mechanism for a sewing machine, including a protective shell. A connecting plate is slidably installed inside the protective shell, a connecting shaft is mounted on one side of the connecting plate, a fixed blade is mounted on the connecting shaft, and a rotating shaft is rotatably mounted on one side of the fixed blade. A movable blade and a gear are mounted on the outer wall of the rotating shaft. A motor is mounted on the inner wall of the protective shell. One end of a movable rod is movably mounted on a threaded sleeve, and a connecting rod is movably mounted inside the protective shell. The other end of the movable rod is movably mounted on the connecting rod. The rack drives the gear to rotate, which in turn drives the rotating shaft to rotate. The rotating shaft then drives the movable blade to cut the thread, avoiding the need to remove and place scissors each time the thread is cut and preventing accidental injury when using scissors. However, this thread-cutting structure is complex and not conducive to later maintenance. Utility Model Content

[0004] This utility model proposes an external scissor-type wire cutting device that is simple in structure, convenient and safe to use.

[0005] An external scissor-type thread cutting device includes a sewing machine. A first mounting base is provided on one side of the sewing machine. A moving drive device for driving the thread cutting mechanism to move is fixedly provided on the first mounting base. The output end of the moving drive device is fixedly connected to a second mounting base. A thread cutting mechanism for cutting threads is provided on the second mounting base. A protective cover is provided outside the thread cutting mechanism. The protective cover has a thread binding groove for binding threads. A pair of scissors is provided at the end of the thread cutting mechanism away from the second mounting base. The position of the scissors matches the position of the thread binding groove.

[0006] With the above structure, the thread-cutting mechanism enables double thread cutting, preventing the sewing machine's internal scissors from not cutting the thread completely. The moving drive device allows for the movement of the second mounting base, thereby raising and lowering the thread-cutting mechanism and preventing interference with the sewing machine's sewing action. The protective cover and thread-binding groove effectively bind the thread within the groove, while the protective cover protects the scissors from injuring the hand.

[0007] To ensure more stable lifting and lowering of the second mounting base and the wire cutting mechanism, a linear sliding bearing is fixedly mounted on the first mounting base. The linear sliding bearing is slidably connected to a guide rod, and the end of the guide rod away from the first mounting base is fixedly connected to the second mounting base.

[0008] Preferably, the wire cutting mechanism includes a wire cutting drive device fixedly connected to the second mounting base, and the output end of the wire cutting drive device is connected to the scissors.

[0009] To prevent injury to hands when the wire cutting mechanism cuts wire, the protective cover includes protective plates on both sides of the scissors, and the two protective plates are provided with the wire spool groove at the opening of the scissors.

[0010] Preferably, both the moving drive device and the wire-cutting drive device are push rod cylinders.

[0011] Preferably, the first mounting base and the second mounting base have an "L" shaped cross-section. The first mounting base is fixedly connected to the sewing machine by bolts, and the second mounting base is fixedly connected to the thread cutting mechanism by bolts.

[0012] After adopting the above technical solution, the beneficial effects of this utility model are: The external scissors thread-cutting device provided by this utility model includes a moving drive device and a thread-cutting mechanism on the sewing machine, achieving dual thread cutting and avoiding the situation where the internal scissors of the sewing machine cannot cut the thread completely. The moving drive device enables the movement of the second mounting base, thereby enabling the raising and lowering of the thread-cutting mechanism and avoiding interference with the sewing machine's sewing operation. The protective cover and thread-binding groove are also included. The thread-binding groove binds the thread within itself, while the protective cover covers the scissors to prevent hand injury. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the main structure of this utility model; Figure 3 This is a side view structural diagram of the present invention; Figure 4This is a three-dimensional structural diagram of the wire-cutting mechanism installation; Figure 5 This is a three-dimensional structural diagram of the wire-cutting mechanism installed from another angle.

[0014] Wherein: 1-sewing machine; 2-first mounting base; 3-moving drive device; 4-second mounting base; 5-thread cutting mechanism; 6-protective cover; 61-thread harness groove; 7-linear sliding bearing; 8-guide rod. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] The orientations mentioned in this specification are based on the orientation of this utility model during normal operation, and do not limit its orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0017] like Figure 1-5 As shown, an external scissor-type thread-cutting device includes a sewing machine 1. A first mounting base 2 is provided on one side of the sewing machine 1. The first mounting base 2 has an "L"-shaped cross-section and is fixedly connected to the sewing machine 1 by bolts. A moving drive device 3 for driving the thread-cutting mechanism 5 is fixedly mounted on the first mounting base 2. The moving drive device 3 is a push rod cylinder, but can also be replaced with an electric push rod. A second mounting base 4 is fixedly connected to the output end of the moving drive device 3. The second mounting base 4 has an "L"-shaped cross-section and is fixedly connected to the thread-cutting mechanism 5 by bolts. The moving drive device 3 and the thread-cutting mechanism 5 on the sewing machine 1 achieve dual thread cutting, avoiding the situation where the internal scissors of the sewing machine 1 cannot cut the thread completely. The moving drive device 3 enables the movement of the second mounting base 4, thereby enabling the raising and lowering of the thread-cutting mechanism 5, preventing interference with the sewing machine 1's sewing operation.

[0018] The wire cutting mechanism 5 is equipped with a protective cover 6. The protective cover 6 has a wire bundling groove 61 for bundling the wire. The end of the wire cutting mechanism 5 away from the second mounting base 4 is equipped with scissors, and the position of the scissors matches the position of the wire bundling groove 61. The wire bundling groove 61 serves to bind the wire within the wire bundling groove 61, and the protective cover 6 can cover the scissors to prevent injury to the hand.

[0019] A linear sliding bearing 7 is fixedly installed on the first mounting base 2. A guide rod 8 is slidably connected to the linear sliding bearing 7. The end of the guide rod 8 away from the first mounting base is fixedly connected to the second mounting base 4. The linear sliding bearing 7 and the guide rod 8 cooperate to play a guiding and positioning role, and the second mounting base 4 moves up and down more stably along the guide rod 8.

[0020] The wire cutting mechanism 5 includes a wire cutting drive device fixedly connected to the second mounting base 4, and the output end of the wire cutting drive device drives the connected scissors.

[0021] The protective cover 6 includes protective plates on both sides of the scissors. The two protective plates are provided with a wire binding groove 61 at the opening of the scissors. The wire binding groove 61 can bind the wire in the wire binding groove 61 and play the role of binding the wire. The protective cover 6 can cover the scissors to prevent injury to the hand.

[0022] The external scissors thread-cutting device provided by this utility model allows the sewing machine 1 to retract its output end when sewing, causing the second mounting base 4 to rise, which in turn causes the thread-cutting mechanism 5 to rise, thus avoiding interference with the sewing machine 1's sewing operation. After the sewing machine 1 finishes sewing, the output end of the moving drive device 3 extends, causing the second mounting base 4 to fall, which in turn causes the thread-cutting mechanism 5 to fall, and the thread-cutting drive device drives the scissors to cut the thread.

[0023] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. An external scissor-type thread-cutting device, comprising a sewing machine (1), characterized in that, The sewing machine (1) has a first mounting base (2) on one side. A moving drive device (3) for driving the thread cutting mechanism (5) to move is fixed on the first mounting base (2). The output end of the moving drive device (3) is fixedly connected to a second mounting base (4). The second mounting base (4) has a thread cutting mechanism (5) for cutting the thread. The thread cutting mechanism (5) has a protective cover (6) outside. The protective cover (6) has a thread binding groove (61) for binding the thread. The end of the thread cutting mechanism (5) away from the second mounting base (4) has scissors. The position of the scissors matches the position of the thread binding groove (61).

2. The external scissor-type thread-cutting device according to claim 1, characterized in that, A linear sliding bearing (7) is fixedly installed on the first mounting base (2). The linear sliding bearing (7) is slidably connected to a guide rod (8). The end of the guide rod (8) away from the first mounting base is fixedly connected to the second mounting base (4).

3. The external scissor-type thread-cutting device according to claim 1, characterized in that, The wire cutting mechanism (5) includes a wire cutting drive device fixedly connected to the second mounting base (4), and the output end of the wire cutting drive device is connected to the scissors.

4. The external scissor-type wire cutting device according to claim 3, characterized in that, The protective cover (6) includes protective plates on both sides of the scissors, and the two protective plates are provided with the wire harness groove (61) at the opening of the scissors.

5. The external scissor-type wire cutting device according to claim 3, characterized in that, Both the moving drive device (3) and the wire cutting drive device are push rod cylinders.

6. The external scissor-type thread-cutting device according to claim 1, characterized in that, The first mounting base (2) and the second mounting base (4) have an "L" shaped cross section. The first mounting base (2) is fixedly connected to the sewing machine (1) by bolts, and the second mounting base (4) is fixedly connected to the thread cutting mechanism (5) by bolts.

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