Cutter device and single needle machine

Abstract

The utility model relates to a cutter device and a single needle machine, the cutter device comprises a supporting plate, a cutter assembly and a cutter protection assembly, the cutter assembly comprises a sliding plate and a blade, the sliding plate is arranged on the supporting plate in a sliding mode, and the blade is connected to one side of the sliding plate in a pivoted mode; the knife protection assembly comprises a knife sleeve, a fixing plate and a rotating cover, the knife sleeve is installed on the side, close to the blade, of the sliding plate, the knife sleeve shields part of the cutting edge of the blade, the fixing plate is installed on the side, connected with the knife sleeve, of the sliding plate, and the rotating cover is pivoted to the fixing plate and selectively shields part of the cutting edge of the blade. The cutter sleeve and the rotary cover are matched to shield all cutting edges of the blade. The cutter device selectively shields part of the cutting edge of the blade through the rotating cover, and when the blade is not used, the cutter sleeve and the rotating cover are matched to shield all the cutting edges of the blade, so that an operator is prevented from being accidentally injured; when the blade is used, the rotating cover rotates around the fixing plate, and then part of the cutting edge of the blade is exposed; the cutter device is convenient to use, safe and reliable.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a cutting device and a single-needle machine. Background Technology

[0002] Currently, patterns are typically sewn onto fabric using a single-needle sewing machine. To facilitate edge trimming, a type of single-needle sewing machine with a cutter that moves with the crossbeam has emerged on the market. For example, CN118639398A discloses an automatic crossbeam single-needle sewing machine with a cutter, including a control device, a frame, a sewing head, a support that moves horizontally relative to the frame via a support moving device, a crossbeam located on the support, the sewing head, and the support moving device, all electrically connected to the control device. It also includes a cutter assembly and a support that moves horizontally relative to the crossbeam via a bracket moving device. The cutter assembly is mounted on the support and electrically connected to the control device. The cutter assembly includes a cutter holder, a motor, and a blade. The blade has a first rotating shaft, and the motor is driven by the first rotating shaft via a transmission assembly. The motor is fixed to the cutter holder, which is fixedly connected to the telescopic end of a telescopic assembly. The motor is also electrically connected to the control device. However, when not in use, the blade edge is exposed outside the cutter holder, posing a potential safety hazard as it could easily injure the operator. Utility Model Content

[0003] Therefore, it is necessary to provide a safe and reliable cutting device and single-needle machine to address the above problems.

[0004] A cutting device includes a support plate, a cutting blade assembly, and a blade guard assembly. The cutting blade assembly includes a sliding plate and a blade. The sliding plate is slidably mounted on the support plate, and the blade is pivotally connected to one side of the sliding plate. The blade guard assembly includes a blade sheath, a fixing plate, and a rotating cover. The blade sheath is installed on the side of the sliding plate near the blade and covers part of the blade's cutting edge. The fixing plate is installed on the side of the sliding plate connected to the blade sheath. The rotating cover is pivotally connected to the fixing plate and selectively covers part of the blade's cutting edge. When the blade is not in use, the blade sheath and the rotating cover cooperate to cover the entire cutting edge of the blade.

[0005] In one embodiment, the blade guard assembly further includes a cover plate and a rotary power element. The cover plate is disposed on one end of the rotating cover, and the rotating cover can rotate around the cover plate. The rotary power element is mounted on the fixed plate and is used to drive the rotating cover to rotate.

[0006] In one embodiment, the rotating cover includes a rotating part and a blade guard part. The cover plate is disposed on the rotating part, and the blade guard part is connected to the end of the rotating part away from the cover plate. The blade guard part is disposed corresponding to the edge of the blade, and the blade guard part selectively covers part of the blade edge.

[0007] In one embodiment, the cutter assembly further includes a lifting power element, a rotating shaft, and a cutter power element. The lifting power element is mounted on the support plate and is used to drive the slide plate to slide. The rotating shaft passes through the blade and the slide plate, and the cutter power element is mounted on the slide plate and is used to drive the rotating shaft to rotate.

[0008] In one embodiment, the cutter assembly further includes a drive wheel, a driven wheel, and a timing belt. The drive wheel is mounted on the power output end of the cutter power element, the driven wheel is mounted on the rotating shaft, and one end of the timing belt is connected to the drive wheel and the other end is connected to the driven wheel.

[0009] In one embodiment, a sharpening assembly is also included, the sharpening assembly including a mounting base, a bushing, a support column, and a grinding wheel. The mounting base is connected to one side of the slide plate, the bushing is slidably disposed on the mounting base, one end of the support column is mounted on the bushing, and the other end is mounted on the grinding wheel.

[0010] In one embodiment, the grinding assembly further includes an end cap, a first elastic element, and a second elastic element. The end cap is disposed on the end of the bushing away from the grinding wheel. The first elastic element is sleeved on the bushing. One end of the first elastic element abuts against the mounting base, and the other end abuts against the end cap. One end of the second elastic element abuts against the end of the support column away from the grinding wheel, and the other end abuts against the end cap.

[0011] In one embodiment, there are two sharpening assemblies, one of which is mounted on one side of the slide plate and the other is mounted on one side of the fixed plate, with the two sharpening assemblies corresponding to the two sides of the blade respectively.

[0012] In one embodiment, the two grinding assemblies are misaligned.

[0013] A single-needle machine includes the aforementioned cutting device.

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

[0015] The cutting device of this utility model selectively covers part of the blade edge by means of a rotating cover. When the blade is not in use, the blade cover and the rotating cover cooperate to cover the entire blade edge to prevent accidental injury to the operator. When the blade is in use, the rotating cover rotates around the fixed plate, thereby exposing part of the blade edge. This cutting device is convenient to use and safe and reliable. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the cutting device according to one embodiment of the present invention;

[0017] Figure 2 for Figure 1 A schematic diagram of the cutting device from another angle, in which the cutting power component is not shown;

[0018] Figure 3 for Figure 1 A cross-sectional view of the grinding assembly in the cutting device shown;

[0019] Figure 4 This is a schematic diagram of the structure of a single-needle machine according to one embodiment of the present invention.

[0020] The meanings of the numbers in the attached diagram are as follows:

[0021] 100. Cutting device;

[0022] 10. Support plate; 20. Cutting blade assembly; 21. Slide plate; 22. Blade; 23. Lifting power element; 24. Rotary shaft; 25. Cutting blade power element; 26. Drive wheel; 27. Driven wheel; 28. Synchronous belt;

[0023] 30. Blade guard assembly; 31. Blade sheath; 32. Fixing plate; 33. Rotating cover; 331. Rotating part; 332. Blade guard part; 34. Cover plate; 35. Rotation power element; 40. Sharpening assembly; 41. Mounting base; 42. Bushing; 43. Support column; 44. Grinding wheel; 45. End cover; 46. First elastic element; 47. Second elastic element;

[0024] 200. Single needle machine; 100. Cutting device; 10a. Crossbeam. Detailed Implementation

[0025] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0026] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0031] Please refer to Figures 1 to 3 The cutting device 100 according to one embodiment of the utility model includes a support plate 10, a cutting assembly 20, and a blade guard assembly 30. The cutting assembly 20 includes a slide plate 21 and a blade 22. The slide plate 21 is slidably mounted on the support plate 10, and the blade 22 is pivotally connected to one side of the slide plate 21. The blade guard assembly 30 includes a blade sheath 31, a fixing plate 32, and a rotating cover 33. The blade sheath 31 is installed on the side of the slide plate 21 near the blade 22 and covers part of the blade edge of the blade 22. The fixing plate 32 is installed on the side of the slide plate 21 connected to the blade sheath 31. The rotating cover 33 is pivotally connected to the fixing plate 32 and selectively covers part of the blade edge of the blade 22. When the blade 22 is not in use, the blade sheath 31 and the rotating cover 33 cooperate to cover the entire blade edge of the blade 22. The cutting device 100 selectively covers part of the blade edge of the blade 22 by means of a rotating cover 33. When the blade 22 is not in use, the blade sleeve 31 and the rotating cover 33 cooperate to cover the entire blade edge of the blade 22 to prevent accidental injury to the operator. When the blade 22 is in use, the rotating cover 33 rotates around the fixed plate 32, thereby exposing part of the blade edge of the blade 22.

[0032] like Figure 1 and Figure 2 As shown, in this embodiment, the support plate 10 is slidably mounted on the crossbeam for position adjustment; the cutter assembly 20 includes a slide plate 21 and a blade 22. The slide plate 21 is slidably mounted on the support plate 10 to move closer to or further away from the fabric; the blade 22 is pivotally connected to one side of the slide plate 21. Optionally, the cutter assembly 20 further includes a lifting power element 23, a rotating shaft 24, and a cutter power element 25. The lifting power element 23 is mounted on the support plate 10 and is used to drive the slide plate 21 to slide; the rotating shaft 24 passes through the blade 22 and the slide plate 21, and the cutter power element 25 is mounted on the slide plate 21 and is used to drive the rotating shaft 24 to rotate, thereby driving the blade 22 to rotate; the blade 22 and the rotating shaft 24 are fixed by screws. Further, the lifting power element 23 is a cylinder, and the cutter power element 25 is a motor. In one embodiment, the cutter assembly 20 further includes a drive wheel 26, a driven wheel 27, and a timing belt 28. The drive wheel 26 is mounted on the power output end of the cutter power element 25, the driven wheel 27 is mounted on the rotating shaft 24, and one end of the timing belt 28 is connected to the drive wheel 26 and the other end is connected to the driven wheel 27.

[0033] Please refer to the following: Figure 1 and Figure 2 The blade guard assembly 30 includes a blade sheath 31, a fixing plate 32, and a rotating cover 33. The blade sheath 31 is installed on the side of the slide plate 21 near the blade 22, and the blade sheath 31 covers part of the blade edge of the blade 22. The fixing plate 32 is installed on the side of the slide plate 21 connected to the blade sheath 31. Optionally, one side of the blade sheath 31 is connected to the slide plate 21, and the other side is connected to the fixing plate 32. Furthermore, the blade sheath 31 is provided with a clearance groove. The rotating cover 33 is pivotally connected to the fixed plate 32. The rotating cover 33 selectively blocks part of the blade edge of the blade 22. When the blade 22 is not in use, the blade sheath 31 and the rotating cover 33 cooperate to block the entire blade edge of the blade 22. Optionally, the rotating cover 33 includes a rotating part 331 and a blade guard part 332. The blade guard part 332 is connected to one end of the rotating part 331 and is disposed corresponding to the edge of the blade 22. The blade guard part 332 selectively blocks part of the blade edge of the blade 22. Further, the blade 22 is circular, and both the blade sheath 31 and the blade guard part 332 are arc-shaped corresponding to the blade 22. In one embodiment, the blade guard assembly 30 also includes a cover plate 34 and a rotational power element 35. The cover plate 34 is placed over one end of the rotating cover 33, and the rotating cover 33 can rotate around the cover plate 34. The rotational power element 35 is mounted on the fixed plate 32 and is used to drive the rotating cover 33 to rotate. The cover plate 34 and the fixed plate 32 are fixed by screws. Optionally, the cover plate 34 covers the rotating part 331, and the blade guard part 332 is connected to the end of the rotating part 331 away from the cover plate 34.

[0034] like Figures 1 to 3 As shown, the cutting device 100 also includes a sharpening assembly 40, which includes a mounting base 41, a bushing 42, a support column 43, and a grinding wheel 44. The mounting base 41 is connected to one side of the slide plate 21, the bushing 42 is slidably mounted on the mounting base 41, one end of the support column 43 is mounted on the bushing 42, and the other end is mounted on the grinding wheel 44. Optionally, the sharpening assembly 40 also includes an end cap 45, a first elastic element 46, and a second elastic element 47. The end cap 45 covers the end of the bushing 42 away from the grinding wheel 44, the first elastic element 46 is sleeved on the bushing 42, one end of the first elastic element 46 abuts against the mounting base 41, and the other end abuts against the end cap 45; one end of the second elastic element 47 abuts against the end of the support column 43 away from the grinding wheel 44, and the other end abuts against the end cap 45; furthermore, both the first elastic element 46 and the second elastic element 47 are springs.

[0035] In one embodiment, there are two sharpening assemblies 40. One sharpening assembly 40 is installed on one side of the slide plate 21, and the other sharpening assembly 40 is installed on one side of the fixing plate 32. The two sharpening assemblies 40 correspond to the two sides of the blade 22 respectively. Optionally, the two sharpening assemblies 40 are staggered. Further, the two grinding wheels 44 correspond to the relief grooves respectively. In use, the end cover 45 is pressed to compress the first elastic member 46. The end cover 45 drives the bushing 42 and the support column 43 to move towards the blade 22, thereby driving the grinding wheel 44 to abut against the blade 22 to achieve sharpening.

[0036] When the fabric needs to be cut, the rotating power element 35 drives the rotating cover 33 to rotate, thereby exposing part of the blade 22; then, the lifting power element 23 drives the sliding plate 21 to approach the fabric, so that the blade 22 abuts against the fabric; the cutting power element 25 then drives the blade 22 to rotate, completing the cutting. The blade 22 is slidably mounted on the frame via a crossbeam, thereby driving the blade 22 to cut along the extension direction of the fabric; the blade 22 is slidably mounted on the crossbeam via a support plate 10, allowing adjustment of the cutting position of the blade 22 to accommodate fabrics of different widths.

[0037] The cutting device 100 of this utility model selectively covers part of the blade edge of the blade 22 by means of a rotating cover 33. When the blade 22 is not in use, the blade sleeve 31 and the rotating cover 33 cooperate to cover the entire blade edge of the blade 22 to prevent accidental injury to the operator. When the blade 22 is in use, the rotating cover 33 rotates around the fixed plate 32, thereby exposing part of the blade edge of the blade 22. This cutting device 100 is convenient to use and safe and reliable.

[0038] Please also see Figure 4 This is an application example diagram of a single-needle machine 200 with the cutting device 100 provided in the embodiments of this utility model. Based on the above embodiments, in an optional embodiment, a single-needle machine 200 includes the above-mentioned cutting device 100; optionally, the single-needle machine 200 also includes a frame and a crossbeam 10a, the crossbeam 10a is slidably mounted on the frame, and the cutting device 100 is slidably mounted on the crossbeam 10a; furthermore, there are two cutting devices 100, and the two cutting devices 100 are respectively slidably mounted on both ends of the crossbeam 10a, so as to realize the simultaneous cutting of both sides of the fabric and improve efficiency.

[0039] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0040] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cutting device, characterized in that, The device includes a support plate, a cutting blade assembly, and a blade guard assembly. The cutting blade assembly includes a sliding plate and a blade. The sliding plate is slidably mounted on the support plate, and the blade is pivotally connected to one side of the sliding plate. The blade guard assembly includes a blade sheath, a fixing plate, and a rotating cover. The blade sheath is installed on the side of the sliding plate near the blade and covers part of the blade's cutting edge. The fixing plate is installed on the side of the sliding plate connected to the blade sheath. The rotating cover is pivotally connected to the fixing plate and selectively covers part of the blade's cutting edge. When the blade is not in use, the blade sheath and the rotating cover cooperate to cover the entire cutting edge of the blade.

2. The cutting device according to claim 1, characterized in that, The blade guard assembly also includes a cover plate and a rotary power element. The cover plate is placed over one end of the rotating cover, and the rotating cover can rotate around the cover plate. The rotary power element is installed on the fixed plate and is used to drive the rotating cover to rotate.

3. The cutting device according to claim 2, characterized in that, The rotating cover includes a rotating part and a blade guard part. The cover plate is placed on the rotating part, and the blade guard part is connected to the end of the rotating part away from the cover plate. The blade guard part is arranged corresponding to the edge of the blade, and the blade guard part selectively covers part of the blade edge.

4. The cutting device according to claim 1, characterized in that, The cutting blade assembly further includes a lifting power element, a rotating shaft, and a cutting blade power element. The lifting power element is mounted on the support plate and is used to drive the slide plate to slide. The rotating shaft passes through the blade and the slide plate, and the cutting blade power element is mounted on the slide plate and is used to drive the rotating shaft to rotate.

5. The cutting device according to claim 4, characterized in that, The cutter assembly also includes a drive wheel, a driven wheel, and a timing belt. The drive wheel is installed at the power output end of the cutter power element, the driven wheel is installed on the rotating shaft, and one end of the timing belt is connected to the drive wheel and the other end is connected to the driven wheel.

6. The cutting device according to claim 1, characterized in that, It also includes a sharpening assembly, which includes a mounting base, a bushing, a support column, and a grinding wheel. The mounting base is connected to one side of the slide plate, the bushing is slidably mounted on the mounting base, one end of the support column is mounted on the bushing, and the other end is mounted on the grinding wheel.

7. The cutting device according to claim 6, characterized in that, The grinding assembly further includes an end cap, a first elastic element, and a second elastic element. The end cap is disposed on the end of the bushing away from the grinding wheel. The first elastic element is sleeved on the bushing. One end of the first elastic element abuts against the mounting base, and the other end abuts against the end cap. One end of the second elastic element abuts against the end of the support column away from the grinding wheel, and the other end abuts against the end cap.

8. The cutting device according to claim 6, characterized in that, There are two sharpening assemblies. One sharpening assembly is installed on one side of the slide plate, and the other sharpening assembly is installed on one side of the fixed plate. The two sharpening assemblies correspond to the two sides of the blade, respectively.

9. The cutting device according to claim 8, characterized in that, The two grinding assemblies are misaligned.

10. A single-needle machine, characterized in that, The cutting device includes any one of claims 1-9.

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