Cloth dragging wheel device for sewing machine

Abstract

The invention discloses a cloth dragging wheel device for a sewing machine, which comprises a machine head, the machine head is provided with a mounting seat, the mounting seat is provided with a cloth dragging wheel cover body, the cloth dragging wheel cover body is internally provided with a cloth dragging wheel assembly, the cloth dragging wheel assembly comprises a cloth dragging wheel and a cloth dragging wheel swinging seat, and the cloth dragging wheel is arranged at one end of the cloth dragging wheel swinging seat; a transmission part is arranged at the other end of the cloth dragging wheel swing seat and used for driving the cloth dragging wheel to conduct auxiliary feeding, and a lifting and pressing part is arranged in the middle of the cloth dragging wheel swing seat and used for driving the cloth dragging wheel swing seat to conduct lifting and placing; the lifting and pressing part and the transmission part are driven by the first driving motor and the second driving motor to operate correspondingly, the cloth dragging action and the lifting and placing action of the cloth dragging wheel are achieved, the structure is simple, and operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of sewing machines, and in particular to a mopping wheel device for sewing machines. Background Art

[0002] Due to the special reasons of fabrics and sewing threads as well as the special structure of sewing machines, in order to ensure the flatness of sewing materials during the sewing process, a rear drag device that can drag the fabric backwards and drive the tugwheel to move upward is used on the market to ensure the flatness of sewing materials.

[0003] However, most of the devices on the market currently use electromagnets and cylinders to lift the mop wheel. The electromagnets are bulky, generate a lot of heat, and are too large. The pneumatic devices are difficult for factories to install, have many pipelines, make a lot of noise during use, are inconvenient to adjust the downward pressure of the roller, and the mop wheel is pressed down after shutdown, among other defects. Summary of the invention

[0004] In view of the deficiencies in the prior art, an object of the present invention is to provide a mopping wheel device for a sewing machine to solve the above-mentioned problems.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a mop wheel device for a sewing machine, comprising a machine head, a mounting seat being provided on the machine head, a mop wheel cover being provided on the mounting seat, a mop wheel assembly being provided in the mop wheel cover, the mop wheel assembly comprising a mop wheel and a mop wheel swing seat, the mop wheel being provided at one end of the mop wheel swing seat, a transmission part being provided at the other end of the mop wheel swing seat, the transmission part being used to drive the mop wheel for auxiliary feeding, a lifting and pressing part being provided in the middle of the mop wheel swing seat, the lifting and pressing part being used to drive the mop wheel swing seat for lifting and placing.

[0006] Furthermore, the lifting and pressing part is provided with a first drive motor, which is arranged at the top of the front end of the mop wheel cover, and the transmission part is provided with a second drive motor, which is arranged at the middle of the front end of the mop wheel cover.

[0007] Furthermore, the transmission part is provided with a driving wheel and a synchronous wheel. The driving wheel is arranged on the motor shaft of the second driving motor. The front ends of the driving wheel and the synchronous wheel are provided with a first synchronous belt. The rear end of the synchronous wheel and the mop wheel are provided with a second synchronous belt. The second synchronous belt is sleeved on the outer peripheral wall of the mop wheel swing seat.

[0008] Furthermore, the lifting and pressing part includes a lifting and pressing wheel, a pressure rod, and a pressure rod connecting block. The lifting and pressing wheel is eccentrically connected to the motor shaft of the first drive motor. The pressure rod is provided with a pressure rod sleeve. The pressure rod is arranged in the pressure rod sleeve and extends downward through the pressure rod sleeve to be connected to the pressure rod connecting block. The front end of the pressure rod sleeve is connected to the lifting and pressing wheel.

[0009] Furthermore, the eccentric angle between the lifting wheel and the first drive motor is 0°-15°.

[0010] Furthermore, a compression spring is arranged inside the compression rod, a compression plate is arranged on the top of the compression spring, a pressure-adjusting nut is arranged on the top of the pressure plate, and a pressure-adjusting screw is arranged on the top of the pressure-adjusting nut.

[0011] Furthermore, a pressure regulating fixing seat is arranged on the side wall of the pressure rod sleeve, and a pressure regulating nut is arranged in the pressure regulating fixing seat.

[0012] The beneficial technical effect of the present invention is that the first drive motor and the second drive motor respectively drive the lifting and pressing part and the transmission part to operate, thereby realizing the mopping action and the lifting and lowering action of the mop wheel, with a simple structure and easy operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall structure of the transmission part of the present invention; Figure 3 It is a schematic diagram of the overall structure of the lifting and pressing part of the present invention; Figure 4 It is a schematic diagram of the overall structure assembly of the present invention; Figure 5 It is a cross-sectional view of the overall structure of the present invention.

[0014] Figure numerals: 1, machine head; 11, mounting seat; 2, mop wheel cover; 3, mop wheel assembly; 31, mop wheel; 32, mop wheel swing seat; 4, transmission part; 41, second drive motor; 42, drive wheel; 43, synchronous wheel; 44, first synchronous belt; 45, second synchronous belt; 5, lifting and pressing part; 51, first drive motor; 52, lifting and pressing lifting wheel; 53, pressure rod; 54, pressure rod connecting block; 55, compression spring; 56, pressure sheet; 57, pressure regulating nut; 58, pressure regulating screw; 59, pressure regulating fixing seat. DETAILED DESCRIPTION

[0015] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The same parts are represented by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "bottom surface" and "top surface", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0016] Example 1, reference Figure 1-5As shown, a mop wheel 31 device for a sewing machine includes a machine head 1, the machine head 1 is provided with a mounting seat 11, a mop wheel cover 2 is provided on the mounting seat 11, a mop wheel assembly 3 is provided in the mop wheel cover 2, the mop wheel assembly 3 includes a mop wheel 31 and a mop wheel swing seat 32, the mop wheel 31 is provided at one end of the mop wheel swing seat 32, the other end of the mop wheel swing seat 32 is provided with a transmission part 4, the transmission part 4 is used to drive the mop wheel 31 for auxiliary feeding, and the middle part of the mop wheel swing seat 32 is provided with a lifting and pressing part 5, the lifting and pressing part 5 is used to drive the mop wheel swing seat 32 to lift and place.

[0017] The lifting and pressing part 5 is provided with a first driving motor 51, which is arranged at the top of the front end of the mop wheel cover 2. The first driving motor 51 is a stepping motor. The lifting and pressing part 5 includes a lifting and pressing wheel 52, a pressure rod 53, and a pressure rod connecting block 54. The lifting and pressing wheel 52 is eccentrically connected to the motor shaft of the first driving motor 51. The eccentric angle between the lifting and pressing wheel 52 and the first driving motor 51 is 0°-15°. The pressure rod 53 is provided with a pressure rod 53 sleeve. The pressure rod 53 is provided The pressure rod 53 is in the pressure rod sleeve, and extends downward through the pressure rod 53 sleeve to be connected with the pressure rod connecting block 54. The front end of the pressure rod 53 sleeve is connected to the lifting wheel 52. A pressure spring 55 is arranged inside the pressure rod 53, and a pressure plate 56 is arranged on the top of the pressure spring 55. A pressure-adjusting nut 57 is arranged on the top of the pressure plate 56. A pressure-adjusting screw 58 is arranged on the top of the pressure-adjusting nut 57. A pressure-adjusting fixing seat 59 is arranged on the side wall of the pressure rod 53 sleeve, and the pressure-adjusting nut 57 is arranged in the pressure-adjusting fixing seat 59.

[0018] The transmission part 4 is provided with a second drive motor 41, which is arranged in the middle of the front end of the mop wheel cover 2. The second drive motor 41 is a stepping motor. The transmission part 4 is provided with a drive wheel 42 and a synchronous wheel 43. The drive wheel 42 is arranged on the motor shaft of the second drive motor 41. The front ends of the drive wheel 42 and the synchronous wheel 43 are provided with a first synchronous belt 44. The rear end of the synchronous wheel 43 and the mop wheel 31 are provided with a second synchronous belt 45. The second synchronous belt 45 is sleeved on the outer peripheral wall of the mop wheel swing seat 32.

[0019] When it is necessary to mop the cloth forward, the sewing machine electronically controls the second drive motor 41 to rotate clockwise, so that the drive wheel 42 on the motor rotates, and then the synchronous wheel 43 is rotated in conjunction with the first synchronous belt 44, and then the synchronous wheel 43 drives the mopping wheel 31 to rotate clockwise through the second synchronous belt 45 to achieve the purpose of mopping the cloth forward; when it is necessary to mop the cloth backward, the first drive motor 51 is controlled to rotate counterclockwise, so that the drive wheel 42 on the motor rotates, and then the synchronous wheel 43 is rotated in conjunction with the first synchronous belt 44, and then the synchronous wheel 43 drives the mopping wheel 31 to rotate counterclockwise through the second synchronous belt 45 to achieve the purpose of returning the material.

[0020] When it is necessary to lift the mop wheel 31, the control box is used to control the first drive motor 51 to rotate counterclockwise, so that the motor shaft on the first drive motor 51 is eccentrically connected to the lifting and pressing lifting wheel 52, driving the pressure rod 53 connected to the lifting and pressing lifting wheel 52 to move upward, thereby driving the pressure rod connecting block 54 to move upward, thereby driving the mop wheel swing seat 32 to move upward, thereby achieving the purpose of lifting the tugwheel; when it is necessary to lower the tugwheel, the control box is used to control the first drive motor 51 to rotate clockwise or continue to rotate counterclockwise to the origin, so that the motor shaft on the first drive motor 51 is eccentrically connected to the lifting and pressing lifting wheel 52, driving the pressure rod 53 connected to the lifting and pressing lifting wheel 52 to move downward, thereby driving the pressure rod connecting block 54 to move downward, thereby driving the mop wheel swing seat 32 to move downward, thereby achieving the purpose of lowering the tugwheel.

[0021] When the tug wheel pressure needs to be adjusted, the flap provided on the mop wheel cover 2 can be opened to operate the pressure regulating screw 58 inside the cover, and the compression spring 55 provided on the pressure rod 53 can be adjusted by the pressure regulating screw 58, thereby achieving the purpose of adjusting the pressure of the mop wheel 31.

[0022] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A mopping wheel (31) device for a sewing machine, comprising a machine head (1), characterized in that: The machine head (1) is provided with a mounting seat (11), a mop wheel cover (2) is provided on the mounting seat (11), a mop wheel assembly (3) is provided in the mop wheel cover (2), the mop wheel assembly (3) comprises a mop wheel (31) and a mop wheel swing seat (32), the mop wheel (31) is provided at one end of the mop wheel swing seat (32), the other end of the mop wheel swing seat (32) is provided with a transmission part (4), the transmission part (4) is used to drive the mop wheel (31) to perform auxiliary feeding, and a lifting and pressing part (5) is provided in the middle of the mop wheel swing seat (32), the lifting and pressing part (5) is used to drive the mop wheel swing seat (32) to lift and place.

2. A mopping wheel device for a sewing machine according to claim 1, characterized in that: The lifting and pressing part (5) is provided with a first drive motor (51), and the first drive motor (51) is arranged at the top of the front end of the mop wheel cover (2); the transmission part (4) is provided with a second drive motor (41), and the second drive motor (41) is arranged at the middle of the front end of the mop wheel cover (2).

3. A mopping wheel device for a sewing machine according to claim 2, characterized in that: The transmission part (4) is provided with a driving wheel (42) and a synchronous wheel (43); the driving wheel (42) is arranged on the motor shaft of the second driving motor (41); the front ends of the driving wheel (42) and the synchronous wheel (43) are provided with a first synchronous belt (44); the rear end of the synchronous wheel (43) and the mopping wheel (31) are provided with a second synchronous belt (45); the second synchronous belt (45) is sleeved on the outer peripheral wall of the mopping wheel swing seat (32).

4. The mopping wheel device for a sewing machine according to claim 1, characterized in that: The lifting and pressing part (5) comprises a lifting and pressing wheel (52), a pressure rod (53), and a pressure rod connecting block (54); the lifting and pressing wheel (52) is eccentrically connected to the motor shaft of the first drive motor (51); the pressure rod (53) is provided with a pressure rod (53) sleeve; the pressure rod (53) is arranged in the pressure rod (53) sleeve and extends downward through the pressure rod (53) sleeve to be connected to the pressure rod connecting block (54); the front end of the pressure rod (53) sleeve is connected to the lifting and pressing wheel (52).

5. The mopping wheel device for a sewing machine according to claim 1, characterized in that: The eccentric angle between the lifting wheel (52) and the first drive motor (51) is 0°-15°.

6. The mopping wheel device for a sewing machine according to claim 4, characterized in that: A compression spring (55) is arranged inside the compression rod (53), a compression plate (56) is arranged on the top of the compression spring (55), a pressure regulating nut (57) is arranged on the top of the pressure plate (56), and a pressure regulating screw (58) is arranged on the top of the pressure regulating nut (57).

7. A mopping wheel device for a sewing machine according to claim 6, characterized in that: A pressure regulating fixing seat (59) is provided on the side wall of the pressure rod (53) sleeve, and the pressure regulating nut (57) is arranged in the pressure regulating fixing seat (59).

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