A cutting tool assembly and its sewing machine

Abstract

This utility model provides a cutting blade assembly and a sewing machine thereof, belonging to the field of sewing machine technology. A cutting blade assembly includes: a base with a groove; a moving blade slidably disposed in the groove of the base and movable along the groove; a fixed blade disposed on the base and at least partially obscuring the groove; a connecting member fixedly connected to the moving blade; and a driving member fixedly connected to the connecting member for driving the moving blade to move relative to the fixed blade. This utility model has the advantages of simple structure and reduced cost.

Description

Technical Field

[0001] This utility model belongs to the field of sewing machine technology, and in particular to a cutter assembly and a sewing machine thereof. Background Technology

[0002] As shown in the patent with patent number CN202510611689.X and title "A thread cutting mechanism for a sewing machine", the thread cutting mechanism involves many components such as a thread cutting cam, a drive shaft, and a swing rod. This not only results in an overly complex internal structure and relatively high cost, but the complex layout of the components also makes the internal structure more susceptible to damage. Summary of the Invention

[0003] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a cutting assembly and its sewing machine, which features a simple structure and reduced costs.

[0004] The objective of this utility model can be achieved through the following technical solutions:

[0005] A cutting blade assembly, comprising:

[0006] The base has a sliding groove.

[0007] The moving blade is slidably disposed in the groove of the base and is capable of moving along the groove;

[0008] A fixed blade is disposed on the base and at least partially obscures the sliding groove;

[0009] Connector, the connector being fixedly connected to the moving blade;

[0010] A driving component, which is fixedly connected to the connecting component, is used to drive the moving tool to move relative to the fixed tool.

[0011] The aforementioned cutter assembly also includes a slide rail, on which a guide groove is provided, and the connector is partially slidably disposed within the guide groove.

[0012] In the above-mentioned cutting blade assembly, the base has a guide hole that communicates with the slide groove, and the moving blade has a connecting part that passes through the guide hole and is connected to the connecting member.

[0013] In the above-mentioned cutting blade assembly, the fixed blade is provided with a limiting strip hole for limiting the movement range of the moving blade, and the connecting part extends into the limiting strip hole.

[0014] In the above-mentioned cutting blade assembly, the base is provided with a receiving groove, which is located on one side of the slide groove and communicates with the slide groove; the bottom of the receiving groove is provided with two symmetrical protrusions, and the protrusions are provided with limiting claws, which can rotate around the protrusions; the fixed blade is provided with a limiting part, and the two limiting claws can be locked on both sides of the limiting part to restrict the fixed blade from moving along the slide groove direction.

[0015] In the above-mentioned cutting blade assembly, a clamping nut is threadedly connected to the base. The clamping nut can press against the limiting pawl to prevent the limiting pawl from disengaging from the limiting part.

[0016] In the above-mentioned cutting blade assembly, the driving component is a cylinder.

[0017] The cutting blade assembly also includes a base plate, which is fixed on the base and covers the slide groove to prevent the fixed blade from detaching. A pinhole is provided in the middle of the base plate, and the moving blade is aligned with the pinhole.

[0018] Compared with the prior art, this application has the following advantages:

[0019] The component consists of only a few core parts, such as base, moving blade, fixed blade, connector, and drive component. It has no complex and redundant structure, which reduces the failure rate during long-term use and correspondingly reduces maintenance costs. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram in this application;

[0021] Figure 2 This is a three-dimensional structural diagram of the substrate after removal in this application;

[0022] Figure 3 yes Figure 2 A schematic diagram of an explosion;

[0023] In the picture,

[0024] 2. Base; 21. Slide groove; 22. Guide hole; 23. Receiving groove; 24. Protrusion;

[0025] 3. Moving part; 31. Connecting part;

[0026] 4. Fixed tool; 41. Limiting slot; 42. Limiting part;

[0027] 5. Connectors;

[0028] 6. Drive components;

[0029] 7. Slide rail; 71. Guide groove;

[0030] 8. Limiting claw;

[0031] 9. Tighten the nut;

[0032] 10. Substrate; 101. Pinhole. Detailed Implementation

[0033] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1 to 3 As shown, a cutting blade assembly includes: a base 2, a movable blade 3, a fixed blade 4, a connector 5, and a drive member 6. The base 2 has a groove 21. The movable blade 3 is slidably disposed in the groove 21 of the base 2 and can move along the groove 21. The fixed blade 4 is disposed on the base 2 and at least partially covers the groove 21. The connector 5 is fixedly connected to the movable blade 3. The drive member 6 is fixedly connected to the connector 5 and is used to drive the movable blade 3 to move relative to the fixed blade 4.

[0035] The drive unit 6 can output reciprocating power. Since the drive unit 6 is fixedly connected to the connector 5, the power of the drive unit 6 is directly transmitted to the connector 5, causing the connector 5 to move synchronously. The connector 5 is fixed to the moving blade 3, thereby causing the moving blade 3 to slide in a direction along the slide groove 21 of the base 2. The fixed blade 4 is fixed on the base 2 and partially blocks the slide groove 21. When the moving blade 3 moves along the slide groove 21, the blade of the moving blade 3 will form a relative shearing motion with the blade of the fixed blade 4. When the wire is cut between the two blades, one cutting cycle is completed. When the drive unit 6 moves in the opposite direction, it can drive the moving blade 3 to return to the initial position along the slide groove 21 through the connector 5, preparing for the next cutting.

[0036] The component consists of only a few core parts: base 2, moving blade 3, fixed blade 4, connector 5, and drive component 6. It has no complex and redundant structure, which reduces the failure rate during long-term use and correspondingly reduces maintenance costs.

[0037] Specifically, it also includes a slide rail 7, on which a guide groove 71 is provided, and the connector 5 is partially slidably disposed within the guide groove 71.

[0038] Furthermore, slide rail 7 is fixed.

[0039] The connector 5 is more stable when sliding in the guide groove 71. In the design, the drive component 6 is set at a position far away from the moving blade 3, and is connected to the moving blade 3 through the connector 5. The design of the guide groove 71 makes the connector 5 more stable during movement.

[0040] Specifically, the base 2 has a guide hole 22 that communicates with the slide groove 21, and the moving knife 3 has a connecting part 31 that passes through the guide hole 22 and is connected to the connecting member 5.

[0041] Specifically, the fixed blade 4 is provided with a limiting strip hole 41 for limiting the movement range of the moving blade 3, and the connecting part 31 extends into the limiting strip hole 41.

[0042] The design of the limiting strip hole 41 can limit the maximum movement range of the connecting part 31, thus limiting the movement direction of the moving blade 3 and preventing the moving blade 3 from overtravel.

[0043] Specifically, the base 2 has a receiving groove 23, which is located on one side of the slide groove 21 and communicates with the slide groove 21; the bottom of the receiving groove 23 has two symmetrical protrusions 24, and the protrusions 24 are provided with limiting claws 8, which can rotate around the protrusions 24; the fixed blade 4 is provided with a limiting part 42, and the two limiting claws 8 can be fastened to both sides of the limiting part 42 to restrict the fixed blade 4 from moving along the slide groove 21.

[0044] The moving blade 3 is partially installed in the slide groove 21, and then the fixed blade 4 is placed on the moving blade 3 and in contact with the moving blade 3. The moving blade 3 is displaced relative to the fixed blade 4. The limiting part 42 of the fixed blade 4 is directly installed in conjunction with the limiting claw 8. The fixed blade 4 is directly limited by the limiting claw 8. At this time, the fixed blade 4 can be taken out from the depth direction of the slide groove 21, but cannot move in the guiding direction of the slide groove 21.

[0045] Specifically, a clamping nut 9 is threaded onto the base 2, and the clamping nut 9 can clamp onto the limiting claw 8 to prevent the limiting claw 8 from disengaging from the limiting part 42.

[0046] Tighten the clamping nut 9, and then the limit claw 8 can be fixed.

[0047] Specifically, the drive component 6 is a cylinder. Alternatively, other drive actuators, such as electromagnetic actuators or electric linear actuators, can be used during the design process.

[0048] Specifically, it also includes a substrate 10, which is fixed on the base 2 and covers the slide groove 21 to restrict the fixed blade 4 from detaching. A pinhole 101 is provided in the middle of the substrate 10, and the moving blade 3 is aligned with the pinhole 101.

[0049] After the substrate 10 is fixedly connected to the base 2, the substrate 10 blocks the top of the slide groove 21, thereby preventing the fixed blade 4 from detaching.

[0050] A sewing machine including the aforementioned cutter assembly.

[0051] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture, as shown in the attached figure. If the specific posture changes, the directional indication will also change accordingly.

[0052] Furthermore, the use of terms such as "first" and "second" in this invention is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Meanwhile, the word "and / or" throughout the text means including three solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0053] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0054] The specific embodiments described herein are merely illustrative examples of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from this utility model or exceeding the scope defined by the appended claims.

Claims

1. A cutting blade assembly, characterized in that, include: Base (2), on which a sliding groove (21) is provided; The moving blade (3) is slidably disposed in the groove (21) of the base (2) and can move along the groove (21); Fixed blade (4), the fixed blade (4) is disposed on the base (2) and at least partially covers the slide groove (21). Connector (5), which is fixedly connected to the moving blade (3); The driving component (6) is fixedly connected to the connecting component (5) and is used to drive the moving blade (3) to move relative to the fixed blade (4).

2. The cutting assembly according to claim 1, characterized in that, It also includes a slide rail (7), on which a guide groove (71) is provided, and the connector (5) is partially slidably disposed in the guide groove (71).

3. The cutting assembly according to claim 1, characterized in that, The base (2) has a guide hole (22) that communicates with the slide groove (21), and the moving knife (3) has a connecting part (31). The connecting part (31) passes through the guide hole (22) and is connected to the connector (5).

4. The cutting assembly according to claim 3, characterized in that, The fixed blade (4) has a limiting strip hole (41) for limiting the movement range of the moving blade (3), and the connecting part (31) extends into the limiting strip hole (41).

5. The cutting assembly according to claim 4, characterized in that, The base (2) has a receiving groove (23), which is located on one side of the slide (21) and communicates with the slide (21). The bottom of the receiving groove (23) has two symmetrical protrusions (24), and the protrusions (24) are provided with limiting claws (8). The limiting claws (8) can rotate around the protrusions (24). The fixed blade (4) is provided with a limiting part (42), and the two limiting claws (8) can be fastened to both sides of the limiting part (42) to restrict the fixed blade (4) from moving along the slide (21).

6. The cutting assembly according to claim 5, characterized in that, A clamping nut (9) is threaded onto the base (2). The clamping nut (9) can be clamped onto the limiting claw (8) to prevent the limiting claw (8) from disengaging from the limiting part (42).

7. The cutting assembly according to claim 1, characterized in that, The driving component (6) is a cylinder.

8. The cutting assembly according to claim 1, characterized in that, It also includes a substrate (10), which is fixed on the base (2) and covers the groove (21) to restrict the fixed blade (4) from detaching. A pinhole (101) is provided in the middle of the substrate (10), and the moving blade (3) is aligned with the pinhole (101).

9. A sewing machine, characterized in that, Includes the cutting assembly as described in any one of claims 1-8.

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