Strip clamping mechanism for sewing machine

Abstract

The utility model provides a strip clamping mechanism for a sewing machine, which relates to the technical field of sewing machines, and comprises a bottom plate, a guide roller and clamping plates, the clamping plates are provided with clamping mechanisms, the clamping plates comprise an upper clamping plate and a lower clamping plate, and the upper clamping plate covers the lower clamping plate; the upper clamping plate is pulled to move upwards, so that the distance between the upper clamping plate and the lower clamping plate is increased, the spring is in a compressed state at the moment, a sewing machine strip penetrates through the space between the upper clamping plate and the lower clamping plate, the upper clamping plate is driven to move downwards through elastic force generated by the spring after the hand is released, and the upper clamping plate and the lower clamping plate are mutually closed to clamp the sewing machine strip. The adjusting nut is screwed to move at the top end of the first threaded rod, the spring can be further compressed or released, the pressure of the upper clamping plate is adjusted, the upper clamping plate can better clamp the sewing machine strip, the sewing machine strip is straightened, and people can conveniently use the sewing machine to conduct sewing on the sewing machine strip.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a material clamping mechanism for sewing machines. 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 that one or more layers of sewing materials are interwoven or sewn together. It can sew fabrics such as cotton, linen, silk, wool, and artificial fibers, as well as products such as leather, plastic, and paper. The stitches it produces are neat, beautiful, flat, and firm. It is fast to sew and easy to use. It has also spawned art forms such as hand-push embroidery and computer embroidery.

[0003] When sewing some thin and wrinkle-prone fabrics, a strip of fabric is generally added during sewing, the sewing position is set on the strip and the strip is straightened to avoid wrinkles at the sewing position, which leads to an unsightly product. The current way of setting the strip is to directly place one end of the strip under the sewing head. The operator needs to use both hands to continuously straighten the part of the strip to be sewn with both hands during the sewing process, and then sew on the straightened part, and manually feed the strip after sewing. This operation is very time-consuming and has a very low sewing efficiency. Therefore, the utility model proposes a strip clamping mechanism for a sewing machine to solve the above problems. Utility Model Content

[0004] In response to the above problems, the present invention proposes a tape clamping mechanism for a sewing machine to solve the problem in the prior art that the part of the tape to be sewn is partially straightened by both hands, and then stitching is performed on the straightened part, and the tape is manually loaded after stitching. This operation is very time-consuming and has very low sewing efficiency.

[0005] To achieve the purpose of the utility model, the utility model is implemented through the following technical solutions: a material clamping mechanism for a sewing machine, including a base plate, a guide roller and a clamping plate, a guide roller is provided on the left side of the base plate, and clamping plates are symmetrically provided at both ends of the base plate, a clamping mechanism is provided on the clamping plate, and the clamping plate includes an upper clamping plate and a lower clamping plate, and the upper clamping plate covers the top of the lower clamping plate.

[0006] Further improvements are: the clamping mechanism includes a No. 1 threaded rod, a spring and an adjusting nut, the two sides of the lower clamp are symmetrically fixedly connected to the No. 1 threaded rod, the outer side of the No. 1 threaded rod is sleeved with a spring, the top end of the spring is threadedly connected to the adjusting nut, the diameter of the adjusting nut is larger than the inner diameter of the spring, and the lower clamp is rotatably connected to a roller inside.

[0007] A further improvement is that fixing holes are symmetrically provided at both ends of the lower splint, assembly bolts are provided inside the fixing holes, the lower splint is detachably connected to the base plate through the assembly bolts, and a limiting mechanism is provided on the top of the upper splint.

[0008] Further improvements are: the limiting mechanism includes a right limiting plate, a left limiting plate, a fastening bolt, a strip groove and a fixing sleeve, the middle of the top of the upper splint is fixedly connected with a fastening bolt, the top of the upper splint is symmetrically and slidingly connected with the right limiting plate and the left limiting plate, the inside of the right limiting plate and the left limiting plate are provided with strip grooves, the top end of the fastening bolt passes through the inside of the two strip grooves and is threadedly connected with a fixing sleeve.

[0009] A further improvement is that a connecting plate is symmetrically fixedly connected to the left side of the base plate, a groove is provided inside the connecting plate, and connecting bolts are symmetrically fixedly connected to both ends of the guide roller, one end of the connecting bolt passes through the inside of the groove and is threadedly connected to a nut.

[0010] A further improvement is that: an empty slot is provided inside the bottom plate, a support frame is fixedly connected above the empty slot, and an adjustment mechanism is provided on the top of the support frame.

[0011] A further improvement is that the adjustment mechanism includes a No. 2 threaded rod, an articulated frame and a limiting roller, the top of the support frame is threadedly connected to the No. 2 threaded rod, the bottom end of the No. 2 threaded rod is rotatably connected to the articulated frame, and the inner side of the articulated frame is rotatably connected to the limiting roller.

[0012] The beneficial effect of the utility model is that the upper clamping plate is pulled upward to increase the distance between the upper clamping plate and the lower clamping plate. At this time, the spring is in a compressed state, and the sewing machine belt is passed between the upper clamping plate and the lower clamping plate. After letting go, the elastic force generated by the spring is used to drive the upper clamping plate to move downward, and the upper clamping plate and the lower clamping plate are closed to clamp the sewing machine belt. The adjusting nut is screwed to move at the top end of the No. 1 threaded rod to further compress or relax the spring to adjust the pressure of the upper clamping plate, so that the upper clamping plate can better clamp the sewing machine belt and straighten the sewing machine belt, making it convenient for people to sew it using a sewing machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is the main view of the utility model;

[0014] Figure 2 This is a schematic diagram of the clamping mechanism structure of the present utility model;

[0015] Figure 3 This is a bottom view of the clamping mechanism of the present utility model;

[0016] Figure 4 This is a schematic diagram of the guide roller structure of the utility model;

[0017] Figure 5 This is a schematic diagram of the structure of the adjustment mechanism of the present utility model.

[0018] In the figure: 1. Base plate; 2. Guide roller; 3. Clamp; 4. Empty slot; 5. Support frame; 6. Upper clamp; 7. Lower clamp; 8. Threaded rod No. 1; 9. Spring; 10. Adjusting nut; 11. Fixing hole; 12. Right limit plate; 13. Left limit plate; 14. Fastening bolt; 15. Strip groove; 16. Fixing sleeve; 17. Roller; 18. Connecting plate; 19. Connecting bolt; 20. Groove; 21. Threaded rod No. 2; 22. Articulated frame; 23. Limit roller. DETAILED DESCRIPTION

[0019] In order to deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments. The embodiments are only used to explain the present invention and do not constitute a limitation on the scope of protection of the present invention.

[0020] according to Figure 1-5 As shown, this embodiment proposes a material clamping mechanism for a sewing machine, including a base plate 1, a guide roller 2 and a clamping plate 3. The guide roller 2 is provided on the left side of the base plate 1, and the clamping plates 3 are symmetrically provided at both ends of the base plate 1. The clamping mechanism is provided on the clamping plate 3, and the clamping plate 3 includes an upper clamping plate 6 and a lower clamping plate 7. The upper clamping plate 6 covers the upper part of the lower clamping plate 7, and pulls the sewing machine material to the guide roller 2, and then pulls the sewing machine material through the clamping mechanism of the two clamping plates 3. The clamping mechanism is used to limit the sewing machine material to straighten the sewing machine material, so that people can sew it with a sewing machine.

[0021] The clamping mechanism includes a No. 1 threaded rod 8, a spring 9 and an adjusting nut 10. The two sides of the lower clamping plate 7 are symmetrically fixedly connected to a No. 1 threaded rod 8. The outer side of the No. 1 threaded rod 8 is sleeved with a spring 9. The top of the spring 9 is threadedly connected to an adjusting nut 10. The diameter of the adjusting nut 10 is larger than the inner diameter of the spring 9. The inner rotation of the lower clamping plate 7 is connected with a roller 17, which pulls the upper clamping plate 6 to move upward, so that the distance between the upper clamping plate 6 and the lower clamping plate 7 increases. At this time, the spring 9 is in a compressed state, and the sewing machine belt passes through the upper clamping plate 6 and the lower clamping plate 7. After letting go, the elastic force generated by the spring 9 drives the upper clamping plate 6 to move downward, and the upper clamping plate 6 and the lower clamping plate 7 are closed to each other to clamp the sewing machine belt. By screwing the adjusting nut 10 to move on the top of the No. 1 threaded rod 8, the spring 9 can be further compressed or relaxed to adjust the pressure of the upper clamping plate 6, so that the upper clamping plate 6 can better clamp the sewing machine belt.

[0022] The lower splint 7 is symmetrically provided with fixing holes 11 at both ends, and the fixing holes 11 are provided with assembly bolts inside. The lower splint 7 is detachably connected to the base plate 1 through the assembly bolts. The top of the upper splint 6 is provided with a limiting mechanism, and the lower splint 7 can be fixed to the top of the base plate 1 through the assembly bolts to install the splint 3 on the base plate 1.

[0023] The limiting mechanism includes a right limiting plate 12, a left limiting plate 13, a fastening bolt 14, a strip groove 15 and a fixing sleeve 16. The middle of the top of the upper clamping plate 6 is fixedly connected with a fastening bolt 14. The top of the upper clamping plate 6 is symmetrically slidably connected with the right limiting plate 12 and the left limiting plate 13. The inside of the right limiting plate 12 and the left limiting plate 13 are both provided with a strip groove 15. The top of the fastening bolt 14 passes through the inside of the two strip grooves 15 and is threadedly connected with a fixing sleeve 16. Loosen the fixing sleeve 16 at the top of the fastening bolt 14 to fix it. The fixed sleeve 16 no longer applies pressure to the right limit plate 12 and the left limit plate 13. The right limit plate 12 and the left limit plate 13 can slide on the top of the upper clamping plate 6. The right limit plate 12 and the left limit plate 13 are adjusted to fit the two sides of the sewing machine belt respectively. Then, the fixed sleeve 16 is tightened again to lock the position of the right limit plate 12 and the left limit plate 13 to limit the sewing machine belt to the middle of the clamping plate 3. The bottom of the sewing machine belt is fitted with the roller 17. The roller 17 can reduce the friction generated when the sewing machine belt moves, making the movement of the sewing machine belt smoother.

[0024] A connecting plate 18 is symmetrically fixedly connected to the left side of the base plate 1, and a groove 20 is provided inside the connecting plate 18. Connecting bolts 19 are symmetrically fixedly connected to both ends of the guide roller 2. One end of the connecting bolt 19 passes through the interior of the groove 20 and is threadedly connected with a nut. The guide roller 2 is clamped on the left side of the base plate 1, and the connecting bolts 19 at both ends of the guide roller 2 are clamped into the interior of the groove 20 of the connecting plate 18. Then, the nut is tightened on the outside of the connecting bolt 19 to install the guide roller 2 on the left side of the base plate 1, so that the sewing machine belt material fits into the guide roller 2, and the guide roller 2 is used to guide the sewing machine belt material.

[0025] An empty slot 4 is provided inside the base plate 1, and a support frame 5 is fixedly connected to the top of the empty slot 4. An adjustment mechanism is provided on the top of the support frame 5, and the adjustment mechanism includes a No. 2 threaded rod 21, an articulated frame 22 and a limiting roller 23. The top of the support frame 5 is threadedly connected to the No. 2 threaded rod 21, and the bottom end of the No. 2 threaded rod 21 is rotatably connected to the articulated frame 22. The inner side of the articulated frame 22 is rotatably connected to the limiting roller 23. The sewing machine belt passes through the top of the limiting roller 23, and the No. 2 threaded rod 21 is twisted forward and backward to drive the limiting roller 23 to move up and down through the articulated frame 22, so as to adjust the sewing machine belt on the top of the limiting roller 23 to be flush with the top of the upper splint 6, so that the sewing machine belt can be straightened better.

[0026] The material clamping mechanism of the sewing machine pulls the upper clamping plate 6 to move upward, so that the distance between the upper clamping plate 6 and the lower clamping plate 7 increases. At this time, the spring 9 is in a compressed state, and the sewing machine material passes through the upper clamping plate 6 and the lower clamping plate 7. After letting go, the elastic force generated by the spring 9 drives the upper clamping plate 6 to move downward. The upper clamping plate 6 and the lower clamping plate 7 are closed to clamp the sewing machine material. The adjusting nut 10 is screwed to move on the top end of the No. 1 threaded rod 8 to further compress or relax the spring 9 to adjust the pressure of the upper clamping plate 6, so that the upper clamping plate 6 can better clamp the sewing machine material and straighten the sewing machine material, making it convenient for people to use the sewing machine to sew it.

[0027] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A material clamping mechanism for a sewing machine, comprising a base plate (1), a guide roller (2) and a clamping plate (3), characterized in that: A guide roller (2) is provided on the left side of the bottom plate (1), and clamping plates (3) are symmetrically provided at both ends of the bottom plate (1). A clamping mechanism is provided on the clamping plates (3), and the clamping plates (3) include an upper clamping plate (6) and a lower clamping plate (7). The upper clamping plate (6) covers the upper part of the lower clamping plate (7). The clamping mechanism comprises a No. 1 threaded rod (8), a spring (9) and an adjusting nut (10); the two sides of the lower clamping plate (7) are symmetrically fixedly connected to the No. 1 threaded rod (8); the outer side of the No. 1 threaded rod (8) is sleeved with a spring (9); the top end of the spring (9) is threadedly connected to the adjusting nut (10); the diameter of the adjusting nut (10) is larger than the inner diameter of the spring (9); and the interior of the lower clamping plate (7) is rotatably connected to a roller (17).

2. A strip clamping mechanism for a sewing machine according to claim 1, characterized in that: The two ends of the lower clamping plate (7) are symmetrically provided with fixing holes (11), and the interiors of the fixing holes (11) are provided with assembly bolts. The lower clamping plate (7) is detachably connected to the bottom plate (1) via the assembly bolts, and a limiting mechanism is provided on the top of the upper clamping plate (6).

3. A strip clamping mechanism for a sewing machine according to claim 2, characterized in that: The limiting mechanism includes a right limiting plate (12), a left limiting plate (13), a fastening bolt (14), a strip groove (15) and a fixing sleeve (16); the fastening bolt (14) is fixedly connected to the middle of the top of the upper clamping plate (6); the top of the upper clamping plate (6) is symmetrically and slidingly connected to the right limiting plate (12) and the left limiting plate (13); the inside of the right limiting plate (12) and the left limiting plate (13) are both provided with a strip groove (15); the top of the fastening bolt (14) passes through the inside of the two strip grooves (15) and is threadedly connected to the fixing sleeve (16).

4. The strip clamping mechanism for a sewing machine according to claim 1, characterized in that: A connecting plate (18) is symmetrically fixedly connected to the left side of the bottom plate (1), a groove (20) is provided inside the connecting plate (18), and connecting bolts (19) are symmetrically fixedly connected to the two ends of the guide roller (2), one end of the connecting bolt (19) passes through the interior of the groove (20) and is threadedly connected to a nut.

5. The strip clamping mechanism for a sewing machine according to claim 1, characterized in that: An empty slot (4) is provided inside the bottom plate (1), a support frame (5) is fixedly connected above the empty slot (4), and an adjustment mechanism is provided on the top of the support frame (5).

6. A strip clamping mechanism for a sewing machine according to claim 5, characterized in that: The adjustment mechanism comprises a No. 2 threaded rod (21), an articulated frame (22) and a limiting roller (23); the top of the support frame (5) is threadedly connected to the No. 2 threaded rod (21); the bottom end of the No. 2 threaded rod (21) is rotatably connected to the articulated frame (22); and the inner side of the articulated frame (22) is rotatably connected to the limiting roller (23).

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