Cloth feeding mechanism of handheld sewing machine

Abstract

The utility model relates to the technical field of sewing equipment, in particular to a cloth feeding mechanism of a handheld sewing machine, which comprises a bottom plate, a sewing machine body is fixedly mounted at the top of the bottom plate, two guide rails are fixedly connected to two sides of the bottom plate respectively, and two first mounting plates are movably connected to one side of each guide rail. A second mounting plate and a third mounting plate are movably connected to one side of the other guide rail, a collecting roller is mounted on the inner side of the first mounting plate, traction rollers are movably connected to the inner sides of the second mounting plate and the third mounting plate, a servo motor is fixedly connected to one side of the third mounting plate, and a driving shaft is movably connected to one end of the servo motor; according to the automatic cloth feeding device of the handheld sewing machine, the handheld sewing machine can feed cloth automatically, meanwhile, the control handle is moved through external force, the position of the cloth can be adjusted, sewing can be conducted on the designated position, the labor intensity of a user is reduced, and meanwhile the situation that a knitting needle stabs the hand is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing equipment, in particular to a cloth feeding mechanism of a handheld sewing machine. Background Art

[0002] Sewing machines can sew cotton, linen, silk, wool, artificial fiber and other fabrics and leather, plastic, paper and other products. Handheld sewing machines, also known as mini sewing machines or micro sewing machines, are smaller versions of industrial sewing machines. They are used to operate by holding the handheld sewing machine, so handheld sewing machines need to be designed to be light and small.

[0003] The Chinese patent with publication number CN211620826U provides a handheld sewing machine. The handheld sewing machine can smoothly form a stitch under a certain tension state by setting a thread clamping device, and apply a clamping force to the thread; by setting a winding device, the thread can be easily wound from the thread ball to the bottom line bobbin or the suture bobbin on the winding column; by setting a suture fixing device, the suture can be fixed on the suture column, which is convenient for handheld use; by setting a power supply device, the sewing machine can be powered; by setting a protrusion, the bottom line bobbin under the push plate can be fixed, which is convenient for handheld sewing of fabrics at any angle.

[0004] In addition to the above advantages, this utility model patent still has some shortcomings: the current handheld sewing machines require manual feeding of cloth, which is labor-intensive and easy to cause the needle to prick the user's hand, which is dangerous. At the same time, since most handheld sewing machines are used at home, the length of the cloth after sewing cannot be counted, and the user can only judge by the naked eye, and the length of the sewn cloth may be too long or too short. Utility Model Content

[0005] The purpose of the utility model is to provide a cloth feeding mechanism of a handheld sewing machine to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A cloth feeding mechanism of a handheld sewing machine comprises a base plate, a sewing machine body is fixedly mounted on the top of the base plate, two sides of the base plate are fixedly connected to a guide rail, one side of one of the guide rails is movably connected to two first mounting plates, and one side of the other guide rail is movably connected to a second mounting plate and a third mounting plate, a collecting roller is mounted on the inner side of the first mounting plate, and the inner sides of the second mounting plate and the third mounting plate are movably connected to a traction roller, one side of the third mounting plate is fixedly connected to a servo motor, one end of the servo motor is movably connected to a driving shaft, one end of the driving shaft is fixedly connected to one end of the traction roller, a counting mechanism is provided inside the second mounting plate, a control handle is fixedly connected to the other side of the second mounting plate, and one end of the control handle is fixedly connected to the first mounting plate.

[0008] Preferably, the counting mechanism includes a linkage shaft, one end of the linkage shaft is fixedly connected to one end of the traction roller, the other end of the linkage shaft is fixedly connected to a No. 1 gear, the top outer edge of the No. 1 gear is meshed with a No. 2 gear, one side of the No. 2 gear is fixedly connected to a transmission shaft running through it, one end of the transmission shaft is fixedly connected to a No. 3 gear, the other end of the transmission shaft is fixedly connected to a small counting circle, one side outer edge of the No. 3 gear is meshed with a No. 4 gear, one side of the No. 4 gear is fixedly connected to a connecting shaft, and one end of the connecting shaft is fixedly connected to a large counting circle.

[0009] Preferably, a movable bin is provided on the inner side of the first mounting plate, the inner wall of the movable bin is movably connected to the outer side of one end of the collecting roller, a number of springs are fixedly connected to the inner wall of the movable bin, and one end of the spring is fixedly connected to a pressure plate.

[0010] Preferably, two slide grooves are opened on one side of the guide rail, and two sliders are fixedly connected to the contact surface between the first mounting plate and the guide rail, and the outer sides of the sliders are matched with the inner walls of the slide grooves.

[0011] Preferably, the time required for the third gear to rotate once is one tenth of the time required for the fourth gear to rotate once.

[0012] Preferably, an observation port is provided on the top of the second mounting plate, and the small counting circle and the large counting circle are located directly below the observation port.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, a servo motor is provided, and under the drive of the servo motor, the cloth is transmitted in coordination with the transmission of the traction roller and the collecting roller, and the cloth is transmitted through the bottom of the sewing machine body, so that the handheld sewing machine can automatically load the cloth, and at the same time, the position of the cloth can be adjusted by moving the control handle by external force, and the designated position can be sewn, which reduces the labor intensity of the user and prevents the knitting needle from pricking the hand;

[0015] 2. In the utility model, a counting mechanism is provided. When the cloth is transmitted, the length of the cloth that has been sewn is counted by the counting mechanism, which is beneficial for the user to choose to sew a certain length of cloth according to his own needs, and it is more accurate and precise than judging the length of the cloth with the naked eye. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a partial structural explosion diagram of the utility model;

[0018] Figure 3 For this utility model Figure 2 Schematic diagram of the overall structure of the middle traction roller;

[0019] Figure 4 For this utility model Figure 3 Schematic diagram of the overall structure of the counting mechanism;

[0020] Figure 5 For this utility model Figure 2 The enlarged view of point A in the middle;

[0021] In the figure: 1. bottom plate; 2. sewing machine body; 3. guide rail; 4. first mounting plate; 5. traction roller; 6. counting mechanism; 7. second mounting plate; 8. servo motor; 9. control handle; 31. slide groove; 41. collecting roller; 42. spring; 43. slider; 44. movable bin; 45. pressure plate; 61. linkage shaft; 62. No. 1 gear; 63. No. 2 gear; 64. transmission shaft; 65. No. 3 gear; 66. small counting circle; 67. No. 4 gear; 68. connecting shaft; 69. large counting circle; 71. observation port; 72. third mounting plate; 81. driving shaft. DETAILED DESCRIPTION

[0022] The specific implementation of the utility model is described in detail below with reference to the accompanying drawings.

[0023] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 , the utility model provides a technical solution:

[0024] A cloth feeding mechanism of a handheld sewing machine comprises a bottom plate 1, a sewing machine body 2 is fixedly mounted on the top of the bottom plate 1, two guide rails 3 are fixedly connected to the two sides of the bottom plate 1, one side of one guide rail 3 is movably connected to two first mounting plates 4, one side of the other guide rail 3 is movably connected to a second mounting plate 7 and a third mounting plate 72, a collecting roller 41 is mounted on the inner side of the first mounting plate 4, a traction roller 5 is movably connected to the inner sides of the second mounting plate 7 and the third mounting plate 72, a servo motor 8 is fixedly connected to one side of the third mounting plate 72, one end of the servo motor 8 is movably connected to a driving shaft 81, one end of the driving shaft 81 is fixedly connected to one end of the traction roller 5, a counting mechanism 6 is arranged inside the second mounting plate 7, a control handle 9 is fixedly connected to the other side of the second mounting plate 7, and one end of the control handle 9 is fixedly connected to the first mounting plate 4.

[0025] In this embodiment, please refer to Figure 4 The counting mechanism 6 includes a linkage shaft 61, one end of which is fixedly connected to one end of the traction roller 5, and the other end of the linkage shaft 61 is fixedly connected to a first gear 62, a top outer edge of the first gear 62 is meshed with a second gear 63, one side of the second gear 63 is fixedly connected to a transmission shaft 64 that runs through it, one end of the transmission shaft 64 is fixedly connected to a third gear 65, and the other end of the transmission shaft 64 is fixedly connected to a small counting circle 66, an outer edge of one side of the third gear 65 is meshed with a fourth gear 67, one side of the fourth gear 67 is fixedly connected to a connecting shaft 68, and one end of the connecting shaft 68 is fixedly connected to a large counting circle 69.

[0026] In this embodiment, please refer to Figure 5 A movable bin 44 is provided on the inner side of the first mounting plate 4, and the inner wall of the movable bin 44 is movably connected to the outer side of one end of the collecting roller 41. A number of springs 42 are fixedly connected to the inner wall of the movable bin 44, and a pressure plate 45 is fixedly connected to one end of the spring 42, which is conducive to pushing the collecting roller 41 to one side through external force, so that the pressure plate 45 can move backward and squeeze the spring 42 to deform it, so that the collecting roller 41 moves an end distance toward the inner cavity of the movable bin 44, so that the other end of the collecting roller 41 is separated from the inner cavity of the movable bin 44, so that the collecting roller 41 can be removed, so that the outer side of the collecting roller 41 can collect the cloth to be sewn.

[0027] In this embodiment, please refer to Figure 5 One side of the guide rail 3 is provided with two slide grooves 31, and the contact surface between the first mounting plate 4 and the guide rail 3 is fixedly connected with two sliders 43, and the outer side of the slider 43 is adapted to the inner wall of the slide groove 31, which is conducive to the mutual adaptation of the slide groove 31 and the slider 43, reducing the contact surface between the first mounting plate 4 and the guide rail 3, thereby reducing the friction when the first mounting plate 4 moves, and making the first mounting plate 4 move more smoothly.

[0028] In this embodiment, please refer to Figure 4 The time required for the third gear 65 to rotate one circle is one tenth of the time required for the fourth gear 67 to rotate one circle. This is beneficial because after the third gear 65 rotates one circle, the fourth gear 67 will rotate one tenth of a circle, thereby driving the small counting circle 66 and the large counting circle 69 to complete the decimal conversion.

[0029] In this embodiment, please refer to Figure 3-4 An observation port 71 is provided at the top of the second mounting plate 7, and the small counting circle 66 and the large counting circle 69 are located directly below the observation port 71, so that the numerical changes at the top of the small counting circle 66 and the large counting circle 69 can be observed through the observation port 71, making it convenient to observe the length of the sewn fabric at any time.

[0030] Working principle of this utility model:

[0031] Step 1, in the present invention, the cloth is wound around the outside of the collecting roller 41 for collection, and then one end of the cloth is passed through the bottom of the sewing machine body 2 and fixed on the outside of the traction roller 5. When sewing, the servo motor 8 is used to give power to control the rotation of the driving shaft 81, so that the traction roller 5 rotates, so that the cloth is continuously passed under the sewing machine body 2 under the drive of the traction roller 5 for sewing. When the sewing position on the cloth surface needs to be changed, the control handle 9 is pushed and pulled by external force, so as to give thrust to the first mounting plate 4 and the second mounting plate 7, and make the slider 43 slide in the inner wall of the slide groove 31, so that the first mounting plate 4 and the second mounting plate 7 move along one side of the guide rail 3, so as to adjust the position of the cloth so that the knitting needle can sew the specified position;

[0032] Step 2, in the utility model, when the traction roller 5 transmits the cloth, the traction roller 5 rotates, and the counting mechanism 6 is provided. When the traction roller 5 rotates, the linkage shaft 61 is driven to rotate, and the No. 1 gear 62 is driven to rotate through the rotation of the linkage shaft 61. Since the outer edge of the No. 1 gear 62 is meshed with the outer edge of the No. 2 gear 63, when the No. 1 gear 62 rotates, the No. 2 gear 63 is driven to rotate, and the transmission shaft 64 is driven to rotate through the rotation of the No. 2 gear 63. The small counting circle 66 is driven to rotate through the rotation of the transmission shaft 64, so that the number at the top of the small counting circle 66 changes, and the No. 3 gear 65 is driven to rotate through the rotation of the transmission shaft 64. Since the outer edge of the No. 3 gear 65 is meshed with the outer edge of the No. 4 gear 67, when the No. 3 gear 65 rotates, the No. 4 gear 67 is driven to rotate, and the No. 4 gear 67 is driven to rotate by the rotation of the connecting shaft 68. The large counting circle 69 is driven to rotate through the rotation of the connecting shaft 68, so that the number at the top of the large counting circle 69 changes.

[0033] The above shows and describes the basic principle, main features and advantages of the utility model. The utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. The utility model may have various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A cloth feeding mechanism for a handheld sewing machine, comprising a bottom plate (1), characterized in that: A sewing machine body (2) is fixedly mounted on the top of the bottom plate (1); two sides of the bottom plate (1) are fixedly connected to a guide rail (3); one side of one guide rail (3) is movably connected to two first mounting plates (4); one side of the other guide rail (3) is movably connected to a second mounting plate (7) and a third mounting plate (72); a collecting roller (41) is mounted on the inner side of the first mounting plate (4); a traction roller (5) is movably connected to the inner sides of the second mounting plate (7) and the third mounting plate (72); a servo motor (8) is fixedly connected to one side of the third mounting plate (72); one end of the servo motor (8) is movably connected to a driving shaft (81); one end of the driving shaft (81) is fixedly connected to one end of the traction roller (5); a counting mechanism (6) is provided inside the second mounting plate (7); a control handle (9) is fixedly connected to the other side of the second mounting plate (7); one end of the control handle (9) is fixedly connected to the first mounting plate (4).

2. The cloth feeding mechanism of a handheld sewing machine according to claim 1, characterized in that: The counting mechanism (6) comprises a linkage shaft (61), one end of which is fixedly connected to one end of the traction roller (5), the other end of which is fixedly connected to a first gear (62), the top outer edge of the first gear (62) is meshed with a second gear (63), one side of the second gear (63) is fixedly connected to a transmission shaft (64) that runs through the second gear (63), one end of the transmission shaft (64) is fixedly connected to a third gear (65), the other end of the transmission shaft (64) is fixedly connected to a small counting circle (66), one side outer edge of the third gear (65) is meshed with a fourth gear (67), one side of the fourth gear (67) is fixedly connected to a connecting shaft (68), and one end of the connecting shaft (68) is fixedly connected to a large counting circle (69).

3. The cloth feeding mechanism of a handheld sewing machine according to claim 1, characterized in that: A movable bin (44) is provided on the inner side of the first mounting plate (4), the inner wall of the movable bin (44) is movably connected to the outer side of one end of the collecting roller (41), a plurality of springs (42) are fixedly connected to the inner wall of the movable bin (44), and one end of the spring (42) is fixedly connected to a pressure plate (45).

4. The cloth feeding mechanism of a handheld sewing machine according to claim 1, characterized in that: Two slide grooves (31) are provided on one side of the guide rail (3); two sliders (43) are fixedly connected to the contact surface between the first mounting plate (4) and the guide rail (3); and the outer sides of the sliders (43) are adapted to the inner walls of the slide grooves (31).

5. The cloth feeding mechanism of a handheld sewing machine according to claim 2, characterized in that: The time required for the third gear (65) to rotate once is one tenth of the time required for the fourth gear (67) to rotate once.

6. The cloth feeding mechanism of a handheld sewing machine according to claim 2, characterized in that: An observation port (71) is provided on the top of the second mounting plate (7), and the small counting circle (66) and the large counting circle (69) are located directly below the observation port (71).

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