Sewing mechanism and sewing machine

Abstract

The utility model discloses a sewing mechanism and a sewing machine, and relates to the technical field of sewing machines. The needle comprises a needle rod and a cold air piece which are both arranged on the sewing machine, an air inlet cavity is formed in the needle rod, the cold air piece is communicated with the air inlet cavity and used for conveying cold air into the needle rod, a machine needle is arranged on the needle rod, a thread hole and an air inlet hole which are communicated are formed in the machine needle, and the air inlet hole is communicated with the air inlet cavity. A traditional heat dissipation mode is abandoned, during use, cold air is conveyed into the air inlet cavity through the cold air piece, then the cold air enters the air inlet hole and is exhausted through the thread hole, when the cold air circulates in the air inlet hole, the temperature of a machine needle can be reduced from inside to outside, the cooling effect is achieved, sewing threads are prevented from being burnt out, the sewing quality is guaranteed, and the use environment is clean; therefore, the practicability is higher.

Description

Technical Field

[0001] The present application relates to the technical field of sewing machines, and in particular to a sewing mechanism and a sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on a sewing material so that one or more layers of sewing materials are interwoven or sewn together. Generally, a sewing machine is composed of four parts: a machine head, a machine base, a transmission and accessories. When the sewing machine is working, the needle moves up and down rapidly, and the needle carries the sewing thread and rubs against the sewing material at high speed. The high temperature generated by the needle can easily burn the sewing thread and affect the sewing quality. The traditional heat dissipation method is to install a silicone oil cooling box at the bottom of the needle. When the needle moves to the lowest point, it will contact cotton wool with silicone oil to play a cooling role. This method not only requires regular addition of silicone oil, which is more troublesome to operate, but the silicone oil attached to the needle can easily adhere to the sewing thread and sewing material, affecting the sewing quality. Therefore, a sewing mechanism and a sewing machine are proposed. Utility Model Content

[0003] The purpose of the present application is to provide a sewing mechanism and a sewing machine to solve the technical problem that silicone oil needs to be added regularly, which is troublesome to operate, and the silicone oil attached to the needle easily adheres to the sewing thread and sewing material.

[0004] In order to achieve the above-mentioned purpose, this application specifically adopts the following technical solutions:

[0005] Sewing mechanism, comprising:

[0006] The needle bar and the cold air component are both arranged on the sewing machine. The needle bar is provided with an air inlet cavity, the cold air component is connected with the air inlet cavity and is used to transport cold air into the interior of the air inlet cavity. The needle bar is provided with a machine needle, the machine needle is provided with a connected thread hole and an air inlet hole, and the air inlet hole is connected with the air inlet cavity.

[0007] Furthermore, a speed reducing member is provided in the air inlet cavity, which is used to reduce the flow rate of the cold air.

[0008] Furthermore, the deceleration member includes a deceleration blade which is arranged in the air inlet cavity and is constructed in a spiral shape, and a plurality of through holes are opened on the deceleration blade.

[0009] Furthermore, the cold air component includes a refrigeration box arranged on the sewing machine, the refrigeration box is provided with an air inlet fan, an air inlet pipe and a plurality of semiconductor refrigeration plates, and the free end of the air inlet pipe is provided with a connecting pipe connected to the air inlet cavity.

[0010] Furthermore, it also includes an air intake box which is arranged on the sewing machine and connected to the input end of the air intake fan, and a filter screen is slidably inserted on the air intake box.

[0011] Furthermore, a fixing plate is provided on the needle rod, a positioning hole is opened on the fixing plate, the connecting tube is plugged into and matched with the air inlet cavity, an annular plate which is in contact with and overlaps the fixing plate is provided on the connecting tube, and a locking piece which acts on the positioning hole is provided on the annular plate, which is used to lock or unlock the annular plate.

[0012] Furthermore, the locking member comprises a sliding rod slidably arranged on the annular plate, a wedge block is arranged at the free end of the sliding rod, and a compression spring is arranged between the sliding rod and the annular plate.

[0013] The sewing machine comprises the above-mentioned sewing mechanism and a machine base, wherein a machine head is arranged on the machine base, and the needle bar, the refrigeration box and the air intake box are all arranged on the machine head.

[0014] The beneficial effects of the present application are as follows: the present application abandons the traditional heat dissipation method. When in use, cold air is delivered to the inside of the air inlet cavity through the cold air piece, and then the cold air enters the air inlet hole and is discharged from the thread hole. When the cold air circulates in the air inlet hole, it will reduce the temperature of the needle from the inside out, play a cooling role, avoid burning the sewing thread, ensure the sewing quality, and the use environment is relatively clean, so it is more practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional diagram of the sewing mechanism of the present application;

[0016] Figure 2 This application Figure 1 A three-dimensional cross-sectional view of

[0017] Figure 3 This application Figure 2 The enlarged view of point A in the middle;

[0018] Figure 4 This application Figure 2 The enlarged view of point B in the middle;

[0019] Figure 5 It is a three-dimensional diagram of the sewing mechanism and sewing machine of the present application.

[0020] Figure numerals: 1. needle bar; 2. air inlet cavity; 3. machine needle; 4. thread hole; 5. air inlet hole; 6. deceleration blade; 7. through hole; 8. refrigeration box; 9. air inlet fan; 10. air inlet pipe; 11. semiconductor refrigeration plate; 12. connecting pipe; 13. air inlet box; 14. filter screen; 15. fixing plate; 16. positioning hole; 17. annular plate; 18. sliding rod; 19. wedge block; 20. extrusion spring; 21. machine base; 22. machine head. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0022] like Figure 1-Figure 3 As shown, a sewing mechanism proposed in one embodiment of the present application includes:

[0023] The needle bar 1 and the cold air component are both arranged on the sewing machine. The needle bar 1 is in a vertical direction. An air inlet cavity 2 is provided on the needle bar 1. The air inlet cavity 2 is in a vertical direction. The cold air component is connected to the air inlet cavity 2 and is used to transport cold air into the interior of the air inlet cavity. A machine needle 3 is arranged on the needle bar 1. The machine needle 3 is in a vertical direction. A thread hole 4 and an air inlet hole 5 are connected to each other on the machine needle 3. The air inlet hole 5 is provided along the length direction of the machine needle 3. The air inlet hole 5 is connected to the air inlet cavity 2.

[0024] When the sewing machine is working, the needle bar 1 and the needle 3 move up and down quickly together, the thread hole 4 is used for the sewing thread to pass through, the needle 3 carries the sewing thread and rubs against the sewing material at high speed, the needle 3 generates high temperature, and at the same time, cold air is transported to the inside of the air inlet cavity 2 through the cold air component, and then the cold air enters the air inlet hole 5 and is discharged from the thread hole 4. When the cold air flows in the air inlet hole 5, it will reduce the temperature of the needle 3 from the inside to the outside, play a cooling role, avoid burning the sewing thread, and ensure the sewing quality;

[0025] To sum up, the present application abandons the traditional heat dissipation method. When in use, cold air is delivered to the inside of the air inlet cavity 2 through the cold air component, and then the cold air enters the air inlet hole 5 and is discharged from the thread hole 4. When the cold air flows in the air inlet hole 5, it will reduce the temperature of the needle 3 from the inside out, play a cooling role, avoid burning the sewing thread, ensure the sewing quality, and the use environment is relatively clean, so it is more practical.

[0026] like Figure 3 As shown, in some embodiments, a deceleration member is provided in the air inlet cavity 2, which is used to slow down the flow rate of the cold air;

[0027] Referring to the above, when cold air enters the air inlet cavity 2, the flow rate of the cold air is slowed down by the deceleration component, thereby increasing the contact time between the cold air and the needle 3, further improving the cooling effect.

[0028] like Figure 3 As shown, in some embodiments, the deceleration member includes a deceleration blade 6 disposed in the air inlet cavity 2 and configured in a spiral shape, the deceleration blade 6 is vertically oriented and fixed in the air inlet cavity 2, and a plurality of through holes 7 are formed on the deceleration blade 6, and the plurality of through holes 7 are all vertically oriented and distributed in a ring array;

[0029] Referring to the above, when the cold air enters the air inlet cavity 2, the spiral deceleration blades 6 and the plurality of through holes 7 are provided, which neither affects the circulation of the cold air nor reduces the flow rate of the cold air.

[0030] like Figure 1-Figure 4 As shown, in some embodiments, the cold air component includes a refrigeration box 8 arranged on the sewing machine, the refrigeration box 8 is fixedly mounted on the sewing machine, and an air inlet fan 9, an air inlet pipe 10 and a plurality of semiconductor refrigeration sheets 11 are arranged on the refrigeration box 8, the air inlet fan 9, the air inlet pipe 10 and the plurality of semiconductor refrigeration sheets 11 are all fixedly mounted on the refrigeration box 8, the output end of the air inlet fan 9 is connected with the refrigeration box 8, the semiconductor refrigeration sheet 11 has a relatively distributed cold end and a hot end, the cold end is located in the refrigeration box 8, and the hot end extends to the outside, the free end of the air inlet pipe 10 is provided with a connecting pipe 12 connected with the air inlet cavity 2, the air inlet pipe 10 is a hose, and the connecting pipe 12 is a hard pipe;

[0031] Referring to the above, when in use, turn on the air inlet fan 9, the air inlet fan 9 works, the outside natural wind enters the refrigeration box 8, and multiple semiconductor refrigeration plates 11 work to reduce the temperature of the outside natural wind and form cold air. Then the cold air enters the air inlet pipe 10, the connecting pipe 12 and the air inlet cavity 2 in turn to realize the delivery of cold air to the inside of the air inlet cavity 2.

[0032] like Figure 2 As shown, in some embodiments, it also includes an air intake box 13 arranged on the sewing machine and connected to the input end of the air intake fan 9, the air intake box 13 is fixed on the sewing machine, and a filter screen plate 14 is slidably inserted on the air intake box 13, and the filter screen plate 14 is in a vertical direction and slides along the vertical direction;

[0033] Referring to the above, when in use, the natural wind from the outside first enters the air intake box 13, and then enters the refrigeration box 8 through the air intake fan 9. During this process, dust and other impurities can be intercepted by the filter plate 14. The sliding and plug-in setting makes it easy to clean the filter plate 14 to avoid clogging of the filter plate 14.

[0034] like Figure 4 As shown, in some embodiments, a fixing plate 15 is provided on the needle rod 1, the fixing plate 15 is in a vertical direction and fixed on the needle rod 1, the fixing plate 15 is annular in structure, a positioning hole 16 is provided on the fixing plate 15, and the positioning hole 16 is provided in a horizontal direction. The connecting tube 12 is plugged and matched with the air inlet cavity 2, and an annular plate 17 is provided on the connecting tube 12 to contact and overlap with the fixing plate 15, the annular plate 17 is fixed on the outer surface of the connecting tube 12, and a locking member acting on the positioning hole 16 is provided on the annular plate 17, which is used to lock or unlock the annular plate 17;

[0035] Referring to the above, in the initial state, the connecting tube 12 is plugged into and matched with the air inlet chamber 2, the annular plate 17 is in contact with and overlapped with the fixed plate 15, and the annular plate 17 is locked by the locking member, that is, the connecting tube 12 cannot withdraw from the air inlet chamber 2. When the connecting tube 12 needs to be disassembled, the annular plate 17 is unlocked by the locking member, the annular plate 17 is able to move away from the fixed plate 15, and the connecting tube 12 is able to withdraw from the air inlet chamber 2. The detachable setting does not affect the disassembly and assembly of the needle rod 1.

[0036] like Figure 4 As shown, in some embodiments, the locking member includes a slide bar 18 slidably disposed on the annular plate 17, the sliding direction of the slide bar 18 is perpendicular to the axis of the annular plate 17, a wedge block 19 is disposed at the free end of the slide bar 18, the wedge block 19 is fixedly connected to the slide bar 18 and forms a step-like structure, an extrusion spring 20 is disposed between the slide bar 18 and the annular plate 17, and the two ends of the extrusion spring 20 are respectively fixedly connected to the slide bar 18 and the annular plate 17;

[0037] Referring to the above, in the initial state, the extrusion spring 20 is in a natural state, the slide bar 18 is away from the axis of the annular plate 17 and is located in the positioning hole 16, the wedge block 19 is in contact with and overlaps the fixed plate 15, and the wedge block 19 is staggered with the positioning hole 16. Due to the obstruction of the wedge block 19, the slide bar 18 cannot withdraw from the positioning hole 16, and the annular plate 17 cannot move, so as to lock the annular plate 17. On the contrary, the wedge block 19 is driven to move to coincide with the positioning hole 16, driving the slide bar 18 to slide close to the axis of the annular plate 17, forcing the extrusion spring 20 to be squeezed. Due to the loss of the obstruction of the wedge block 19, the slide bar 18 is able to withdraw from the positioning hole 16, and the annular plate 17 is able to move, so as to unlock the annular plate 17. Then the extrusion spring 20 is reset to its natural state, and the slide bar 18 slides to its initial position.

[0038] like Figure 5 As shown, in some embodiments, the sewing machine includes the above-mentioned sewing mechanism and also includes a machine base 21, on which a machine head 22 is arranged. The machine head 22 is fixed on the machine base 21, and the needle bar 1, the refrigeration box 8 and the air intake box 13 are all arranged on the machine head 22.

[0039] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A sewing mechanism, characterized in that: include: A needle bar (1) and a cold air component are both arranged on a sewing machine. An air inlet cavity (2) is provided on the needle bar (1). The cold air component is connected to the air inlet cavity (2) and is used to transport cold air into the interior of the air inlet cavity. A machine needle (3) is provided on the needle bar (1). A thread hole (4) and an air inlet hole (5) are connected to each other on the machine needle (3). The air inlet hole (5) is connected to the air inlet cavity (2).

2. The sewing mechanism according to claim 1, characterized in that: A speed reducing component is arranged in the air inlet cavity (2) and is used to reduce the flow rate of the cold air.

3. The sewing mechanism according to claim 2, characterized in that: The deceleration component comprises a deceleration blade (6) which is arranged in the air intake cavity (2) and is constructed in a spiral shape, and a plurality of through holes (7) are formed on the deceleration blade (6).

4. The sewing mechanism according to claim 1, characterized in that: The cold air component comprises a refrigeration box (8) arranged on the sewing machine, the refrigeration box (8) being provided with an air inlet fan (9), an air inlet pipe (10) and a plurality of semiconductor refrigeration plates (11), and the free end of the air inlet pipe (10) being provided with a connecting pipe (12) communicating with the air inlet cavity (2).

5. The sewing mechanism according to claim 4, characterized in that: It also includes an air intake box (13) which is arranged on the sewing machine and is connected to the input end of the air intake fan (9), and a filter screen plate (14) is slidably inserted into the air intake box (13).

6. The sewing mechanism according to claim 4, characterized in that: The needle rod (1) is provided with a fixing plate (15), the fixing plate (15) is provided with a positioning hole (16), the connecting tube (12) is plugged into and matched with the air inlet chamber (2), the connecting tube (12) is provided with an annular plate (17) which abuts against and overlaps the fixing plate (15), and the annular plate (17) is provided with a locking member which acts on the positioning hole (16) and is used to lock or unlock the annular plate (17).

7. The sewing mechanism according to claim 6, characterized in that: The locking member comprises a sliding rod (18) slidably arranged on the annular plate (17), a wedge block (19) being arranged at the free end of the sliding rod (18), and a pressing spring (20) being arranged between the sliding rod (18) and the annular plate (17).

8. A sewing machine comprising a sewing mechanism according to any one of claims 1 to 7, characterized in that: It also comprises a machine base (21), a machine head (22) being arranged on the machine base (21), and the needle bar (1), the refrigeration box (8) and the air intake box (13) are all arranged on the machine head (22).

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