Machine head integrated cutter structure

Abstract

The utility model relates to a machine head integrated cutter structure which comprises a machine shell and a mounting shell integrally formed on the machine shell, a first cavity and a second cavity are formed in the mounting shell, a sliding rod and a driving structure for driving the sliding rod to vertically slide are arranged on the first cavity in a sliding mode, and the top end of the sliding rod is located in the first cavity; the bottom end of the sliding rod downwards penetrates through the first cavity, and the cutter is installed at the bottom of the sliding rod. The driving structure comprises a motor, a sliding spring and a cam; the cam is rotationally connected to the inner wall of the first cavity, the axis of the cam is transverse, and the motor drives the cam to rotate; a sliding block is arranged at the top end of the sliding rod, the sliding spring is located between the sliding block and the inner wall of the first cavity and jacks up the sliding block, and the cam rotates to press the sliding block downwards to enable the cutter to cut the line. The second cavity is used for installing the presser foot mechanism and communicates with the first cavity, and the sliding rod is connected to the first cavity in a sealed and sliding mode. The cutter structure has the effect that the cutter structure is more convenient to lubricate.

Description

Technical Field

[0001] This application relates to the field of sewing machines, and in particular to a head-integrated cutter structure. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on the sewing material, so as to interweave or sew together one or more layers of sewing materials. Sewing machines can sew fabrics such as cotton, linen, silk, wool, and artificial fibers, as well as products such as leather, plastic, and paper. The stitches sewn are neat, beautiful, flat and firm, with fast sewing speed and easy use.

[0003] In actual use, in order to keep the presser foot mechanism lubricated, a sewing machine usually has a dedicated oil supply channel to fill the presser foot mechanism with lubricating oil. In order to achieve better thread cutting, a sewing machine usually has a cutter structure. The cutter structure is separately installed on the main body of the sewing machine. When the cutter structure needs lubrication, the machine shell needs to be opened to lubricate the cutter structure, which is not convenient for lubrication and maintenance. Utility Model Content

[0004] In order to lubricate the cutter structure more conveniently, this application provides a head-integrated cutter structure.

[0005] A head-integrated cutter structure provided by this application adopts the following technical solutions:

[0006] A head-integrated cutter structure includes a machine shell and a mounting shell integrally formed on the machine shell. The mounting shell is provided with a first cavity and a second cavity. A sliding rod and a driving structure for driving the sliding rod to slide vertically are slidably arranged on the first cavity. The top end of the sliding rod is located in the first cavity, the bottom end of the sliding rod penetrates downward through the first cavity, and the bottom of the sliding rod is for installing a cutter.

[0007] The driving structure includes a motor, a sliding spring and a cam; the cam is rotatably connected to the inner wall of the first cavity, the axis of the cam is horizontal, and the motor drives the cam to rotate; a sliding block is arranged at the top end of the sliding rod, the sliding spring is located between the sliding block and the inner wall of the first cavity, the sliding spring jacks up the sliding block, and the cam rotates to press down the sliding block to cut the thread with the cutter; the second cavity is for installing a presser foot mechanism, the second cavity communicates with the first cavity, and the sliding rod is hermetically slidably connected to the first cavity.

[0008] By adopting the above technical solutions, the integral molding structure of the machine shell and the mounting shell has high structural strength, and at the same time is convenient for lubricating the cutter structure and the presser foot mechanism, with a beautiful and generous structure. The motor drives the cam to rotate, and the cam presses down the sliding block to complete thread cutting with the cutter. When the second roller rotates away from the sliding block, the sliding spring drives the sliding rod to reset and the cutter to lift. The second cavity communicates with the first cavity, which is more convenient for lubricating the cutter structure.

[0009] Optionally, a vertical rod is fixed in the first cavity, and a stabilizing hole for the vertical rod to slide is formed in the sliding block.

[0010] By adopting the above technical solution, the vertical rod makes the sliding of the sliding block stable and not easily deviate from the predetermined sliding direction.

[0011] Optionally, a sealing ring is sleeved on the sliding rod, and the sealing ring seals the connection between the sliding rod and the first cavity.

[0012] By adopting the above technical solution, when the first cavity is filled with lubricating oil, the sealing ring maintains the sealing performance of the first cavity, and the lubricating oil is not easily dripped out of the first cavity.

[0013] Optionally, a driving shaft is rotatably connected to the side wall between the first cavity and the second cavity. A driving block is fixed on the driving shaft. The driving shaft is connected to a presser foot mechanism. When the motor drives the cam to rotate reciprocally, when the cam rotates away from the sliding block, the cam abuts against the driving block to drive the driving block to rotate so as to drive the presser foot to press down.

[0014] By adopting the above technical solution, when the cam rotates and abuts against the driving block, the presser foot is pressed down. The rotation of the cam realizes both the tangent and the lifting and pressing down of the presser foot, reducing costs.

[0015] Optionally, it further includes a blade and a connection structure. The connection structure connects the bottom end of the sliding rod and the blade. The connection structure includes a connection seat, a compression spring and a sliding seat. The bottom end of the sliding rod is arranged on the connection seat. A connection column for the sliding seat to slide is arranged on the connection seat. The sliding seat slides along the length direction of the connection column. The blade is arranged on the sliding seat. The compression spring is sleeved on the connection column. The elastic force direction of the compression spring is transverse. One end of the compression spring abuts against the connection seat, and the other end abuts against the side of the sliding seat away from the blade.

[0016] By adopting the above technical solution, when the blade makes a tangent, the compression spring drives the blade to abut tightly against the tangent position, improving the shearing force.

[0017] Optionally, a connecting rod is arranged on the cam, and a first roller is arranged at the end of the connecting rod away from the cam. When the cam drives the sliding block to slide, the first roller abuts against the sliding block.

[0018] By adopting the above technical solution, the first roller abutting against the sliding block reduces the wear of the cam directly abutting against the sliding block, and the cam has better durability.

[0019] Optionally, a second roller is arranged on the driving block. When the cam rotates away from the sliding block, the cam abuts against the second roller.

[0020] By adopting the above technical solution, the second roller makes it more convenient for the first roller to abut, and at the same time, the second roller abutting against the first roller reduces the wear of the drive shaft.

[0021] Optionally, a main shaft is provided on the casing, and the main shaft is driven to rotate by a through-shaft motor.

[0022] By adopting the above technical solution, the through-shaft motor ensures the concentricity of the motor and the main shaft, and has high installation accuracy.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. When the motor drives the cam to rotate, the cam presses down the sliding block to complete the cutting of the cutter. The installation shell is used for lubricating the cutter structure and the presser foot mechanism. The second cavity communicates with the first cavity, making it more convenient to lubricate the cutter structure;

[0025] 2. The vertical rod restricts the sliding block, making the sliding rod more stable when sliding;

[0026] 3. The rotation of the cam also drives the presser foot mechanism. One cam completes the movement of two sets of mechanisms, reducing costs. Description of the Drawings

[0027] Figure 1 is the overall schematic diagram of the integrated cutter head structure of the embodiment.

[0028] Figure 2 is the partial cross-sectional view of the integrated cutter head structure of the embodiment.

[0029] Figure 3 is the partial structural schematic diagram of the integrated cutter head structure of the embodiment.

[0030] Figure 4 is Figure 1 the partial enlarged view of point A of

[0031] Figure 5 is the partial disassembled view of the integrated cutter head structure of the embodiment.

[0032] Description of the reference numerals: 1. Casing; 2. Installation shell; 21. First cavity; 22. Second cavity; 23. Sliding rod; 24. Sliding block; 25. Vertical rod; 26. Stable hole; 3. Driving structure; 31. Motor; 32. Sliding spring; 33. Cam; 4. Sealing ring; 51. Drive shaft; 52. Drive block; 53. Connecting column; 54. Connecting rod; 55. First roller; 56. Second roller; 6. Blade; 7. Connecting structure; 71. Connecting seat; 72. Compression spring; 73. Sliding seat; 81. Main shaft; 82. Through-shaft motor. Detailed Description of the Embodiment

[0033] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0034] An embodiment of the present application discloses a head-integrated cutter structure. Refer to Figure 1 、 Figure 2 , the head-integrated cutter structure includes a housing 1 and a mounting shell 2 integrally formed on the housing 1. A first cavity 21 and a second cavity 22 are defined on the mounting shell 2. A sliding rod 23 is slidably connected to the first cavity 21, and a driving structure 3 for driving the sliding rod 23 to slide vertically is provided. The top end of the sliding rod 23 is located in the first cavity 21, the bottom end of the sliding rod 23 penetrates downward through the first cavity 21, and the bottom of the sliding rod 23 is for installing a cutter.

[0035] Refer to Figure 2 、 Figure 3 , the driving structure 3 includes a motor 31, a sliding spring 32, and a cam 33. The cam 33 is rotatably connected to the inner wall of the first cavity 21, the axis of the cam 33 is horizontal, and the motor 31 drives the cam 33 to rotate. A sliding block 24 is fixed to the top end of the sliding rod 23. The sliding spring 32 is located between the sliding block 24 and the inner wall of the first cavity 21. The sliding spring 32 is sleeved on the sliding rod 23, and the sliding spring 32 jacks up the sliding block 24. A connecting rod 54 is fixed to the cam 33, and a first roller 55 is fixed to the end of the connecting rod 54 away from the cam 33. When the cam 33 drives the sliding block 24 to slide, the first roller 55 abuts against the sliding block 24 to cut the line of the cutter. A vertical rod 25 is fixed in the first cavity 21, and a stable hole 26 for the vertical rod 25 to slide is provided on the sliding block 24. The second cavity 22 is for installing a presser foot mechanism. The second cavity 22 communicates with the first cavity 21. The sliding rod 23 is slidably and sealingly connected to the first cavity 21, and a sealing ring 4 is sleeved on the sliding rod 23. The sealing ring 4 seals the connection between the sliding rod 23 and the first cavity 21.

[0036] Refer to Figure 2 、 Figure 3 , a driving shaft 51 is rotatably connected to the side wall between the first cavity 21 and the second cavity 22. A driving block 52 is fixed to the driving shaft 51, and a second roller 56 is fixed to the driving block 52. The driving shaft 51 is connected to the presser foot mechanism. The motor 31 drives the cam 33 to rotate reciprocally. When the cam 33 rotates away from the sliding block 24, the cam 55 abuts against the second roller 56, and the driving block 52 rotates to drive the presser foot to press down.

[0037] Refer to Figure 1 、 Figure 4, the integrated head cutting tool structure further includes a blade 6 and a connection structure 7. The connection structure 7 connects the bottom end of the sliding rod 23 and the blade 6. The connection structure 7 includes a connection seat 71, a compression spring 72, and a sliding seat 73. The bottom end of the sliding rod 23 is fixed on the connection seat 71. A connection column 53 for the sliding seat 73 to slide is fixed on the connection seat 71. The sliding seat 73 slides along the length direction of the connection column 53. The blade 6 is fixed on the sliding seat 73. The compression spring 72 is sleeved on the connection column 53. The elastic direction of the compression spring 72 is horizontal. One end of the compression spring 72 abuts against the connection seat 71, and the other end abuts against the side of the sliding seat 73 away from the blade 6.

[0038] Referring to Figure 5 , a main shaft 81 is provided on the machine shell 1. The main shaft 81 is driven to rotate by a coaxial fixed through-shaft motor 82. The through-shaft motor 82 controls the lifting of the needle and the control of the rotary hook, enabling the sewing machine to complete the sewing work.

[0039] The implementation principle of an integrated head cutting tool structure in an embodiment of the present application is as follows: When a thread cutting operation is required, the motor 31 drives the cam 33 to reciprocate. When the first roller 55 abuts against the sliding block 24, the sliding spring 32 is compressed. The vertical rod 25 stabilizes the sliding of the sliding block 24. The sliding rod 23 slides away from the first cavity 21, and the thread cutting is completed. When the cam 33 moves away from the sliding block 24, the sliding spring 32 drives the sliding block 24 to reset, and the cutting tool lifts. When the first roller 55 abuts against the second roller 56, the presser foot presses down. The installation shell 1 is used for lubricating the cutting tool structure and the presser foot mechanism. The first cavity 21 communicates with the second cavity 22, and the lubricating oil fills the first cavity 21 and the second cavity 22 along, making it more convenient to lubricate the cutting tool structure.

[0040] The above are all preferred embodiments of the present application. The protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A cutter head integrated cutter structure, comprising a machine shell (1) and a mounting shell (2) integrally formed on the machine shell (1), characterized in that: A first cavity (21) and a second cavity (22) are provided on the installation shell (2). A sliding rod (23) and a driving structure (3) for driving the vertical sliding of the sliding rod (23) are slidably arranged on the first cavity (21). The top end of the sliding rod (23) is located inside the first cavity (21), and the bottom end of the sliding rod (23) penetrates downward through the first cavity (21). The bottom of the sliding rod (23) is for installing a cutting knife. The driving structure (3) includes a motor (31), a sliding spring (32), and a cam (33). The cam (33) is rotatably connected to the inner wall of the first cavity (21). The axis of the cam (33) is horizontal, and the motor (31) drives the cam (33) to rotate. A sliding block (24) is arranged at the top end of the sliding rod (23). The sliding spring (32) is located between the sliding block (24) and the inner wall of the first cavity (21). The sliding spring (32) jacks up the sliding block (24), and the cam (33) rotates to press down the sliding block (24) to cut the line with the cutting knife. The second cavity (22) is for installing a presser foot mechanism. The second cavity (22) communicates with the first cavity (21). The sliding rod (23) is slidably and sealingly connected to the first cavity (21).

2. The integrated cutter head structure according to claim 1, wherein: A vertical rod (25) is fixed inside the first cavity (21). A stable hole (26) for the vertical rod (25) to slide is formed on the sliding block (24).

3. The integrated cutter head structure according to claim 1, characterized in that: A sealing ring (4) is sleeved on the sliding rod (23). The sealing ring (4) seals the connection between the sliding rod (23) and the first cavity (21).

4. The nose integrated cutter structure according to claim 1, characterized in that: A driving shaft (51) is rotatably connected to the side wall between the first cavity (21) and the second cavity (22). A driving block (52) is fixed on the driving shaft (51). The driving shaft (51) is connected to the presser foot mechanism. The motor (31) drives the cam (33) to reciprocate. When the cam (33) rotates away from the sliding block (24), the cam (33) abuts against the driving block (52) to drive the driving block (52) to rotate so as to drive the presser foot to press down.

5. The head-integrated cutter structure according to claim 1, wherein: It further includes a blade (6) and a connecting structure (7). The connecting structure (7) connects the bottom end of the sliding rod (23) and the blade (6). The connecting structure (7) includes a connecting seat (71), a compression spring (72), and a sliding seat (73). The bottom end of the sliding rod (23) is arranged on the connecting seat (71). A connecting column (53) for the sliding seat (73) to slide is arranged on the connecting seat (71). The sliding seat (73) slides along the length direction of the connecting column (53). The blade (6) is arranged on the sliding seat (73). The compression spring (72) is sleeved on the connecting column (53). The elastic direction of the compression spring (72) is horizontal. One end of the compression spring (72) abuts against the connecting seat (71), and the other end abuts against the side of the sliding seat (73) away from the blade (6).

6. The nose-integrated cutter structure according to claim 1, wherein: A connecting rod (54) is provided on the cam (33). One end of the connecting rod (54) away from the cam (33) is provided with a first roller (55). When the cam (33) drives the sliding block (24) to slide, the first roller (55) abuts against the sliding block (24).

7. The integrated cutter head structure according to claim 4, characterized in that: A second roller (56) is provided on the driving block (52). When the cam (33) rotates in a direction away from the sliding block (24), the cam (33) abuts against the second roller (56).

8. The head-integrated cutter structure according to claim 1, characterized in that: A main shaft (81) is provided on the machine housing (1), and the main shaft (81) is driven to rotate by a through-shaft motor (82).

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