Sewing positioning presser foot

Abstract

The utility model discloses a sewing positioning presser foot which comprises a pressing rod, a connecting rod is fixed to the bottom end of the pressing rod, a first presser foot plate is fixed to the bottom end of the connecting rod, a second presser foot plate is arranged on one side of the first presser foot plate, a gap is reserved between the second presser foot plate and the first presser foot plate, a sliding block is fixed to the top of the second presser foot plate, and a sliding rail is fixed to the outer wall of one side of the first presser foot plate. The sliding block is slidably connected with the sliding rail, the outer wall of one side of the sliding block is in threaded connection with a locking bolt, and one end of the locking bolt abuts against the sliding rail. The second presser foot plate slides through the sliding block and the sliding rail, and the second presser foot plate is fixed through the locking bolt, so that the second presser foot plate and the first presser foot plate can be adjusted to be in a proper overlock mode according to the thickness of materials, and therefore when the presser foot plate can be suitable for folding overlock of the materials with various thicknesses, the overlock effect is good. The pressing and positioning effects are achieved, and meanwhile two materials with different thicknesses can be positioned in the sewing process.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine presser foot technology, specifically to a sewing positioning presser foot. Background Technology

[0002] The presser foot of a sewing machine is an essential component. Various types of presser feet play a very important role in the production process, positioning the two materials to be sewn together and keeping them close together during the process.

[0003] In actual production, the folding and overlocking of materials also requires the use of presser feet for positioning. Since different materials have different thicknesses, existing presser feet are typically only suitable for folding and overlocking materials of one thickness, failing to meet the needs of folding and overlocking materials of multiple thicknesses, thus resulting in a limited function of the presser foot. Therefore, there is an urgent need to design a sewing positioning presser foot to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a sewing positioning presser foot to address the aforementioned shortcomings in the prior art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A sewing positioning presser foot includes a presser rod, a connecting rod fixed to the bottom end of the presser rod, a presser foot plate one fixed to the bottom end of the connecting rod, a presser foot plate two provided on one side of the presser foot plate one, a gap between the presser foot plate two and the presser foot plate one, a slider fixed to the top of the presser foot plate two, a slide rail fixed to one side of the outer wall of the presser foot plate one, the slider being slidably connected to the slide rail, and a locking bolt threaded to one side of the outer wall of the slider, one end of the locking bolt abutting against the slide rail.

[0007] Furthermore, the connecting rod has an insertion groove inside, and the bottom end of the pressure rod is fixed with an insertion rod, which is inserted into the insertion groove.

[0008] Furthermore, a positioning shaft is inserted into one side of the outer wall of the connecting rod, a positioning hole is opened inside the connecting rod, the positioning shaft extends into the interior of the positioning hole, and a baffle is fixed to one end of the positioning shaft.

[0009] Furthermore, a fixing plate is integrally formed at the bottom end of the pressure rod, a guide sleeve is welded to one side of the outer wall of the fixing plate, a guide rod is integrally formed at one end of the positioning shaft, the guide rod is movably inserted into the inside of the guide sleeve, and a notch communicating with the positioning hole is opened at the bottom of the insertion rod.

[0010] Furthermore, the fixing plate is located on one side of the connecting rod, and a baffle plate is fixed to the end of the guide rod away from the positioning shaft. A spring is sleeved on the outside of the guide rod between the baffle plate and the fixing plate.

[0011] Furthermore, the top and bottom outer walls of the slide rail are both fixed with blocks, and the bottom outer wall of the pressure foot plate is provided with a clearance opening that matches the blocks.

[0012] In the above technical solution, the sewing positioning presser foot provided by this utility model has the following advantages: the presser foot plate two slides through the slider and the slide rail, and is fixed by the locking bolt, so that the presser foot plate two and the presser foot plate one can be adjusted to a suitable overlocking mode according to the material thickness. This enables the presser foot plate to achieve the pressing and positioning effect when folding and overlocking materials of various thicknesses. At the same time, it can also position two materials of different thicknesses during sewing. By pressing the baffle plate two and then pulling down the connecting rod, the connecting rod and the insertion rod can be disengaged, thus achieving the effect of easy disassembly of the presser foot. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a front view structural diagram of an embodiment of a sewing positioning presser foot according to the present invention.

[0015] Figure 2 This is a schematic diagram of the internal structure of the connecting rod provided in an embodiment of a sewing positioning presser foot according to the present invention.

[0016] Figure 3 This is a schematic diagram of the plug rod structure provided for an embodiment of the sewing positioning presser foot of this utility model.

[0017] Figure 4 This is an enlarged structural diagram of point A, which is provided for an embodiment of a sewing positioning presser foot of this utility model.

[0018] Figure 5 This is an enlarged structural diagram of section B, which is provided for an embodiment of a sewing positioning presser foot of this utility model.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Pressure rod, 2. Connecting rod, 3. Pressure foot plate one, 4. Pressure foot plate two, 5. Slider, 6. Slide rail, 7. Locking bolt, 8. Stop block, 9. Clearance opening, 10. Insertion groove, 11. Insertion rod, 12. Fixing plate, 13. Guide sleeve, 14. Guide rod, 15. Notch, 16. Positioning hole, 17. Positioning shaft, 18. Stop plate one, 19. Stop plate two, 20. Spring. Detailed Implementation

[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0022] like Figure 1-5 As shown in the figure, a sewing positioning presser foot provided in this embodiment of the utility model includes a presser rod 1, a connecting rod 2 fixed to the bottom end of the presser rod 1, a presser foot plate 3 fixed to the bottom end of the connecting rod 2, a presser foot plate 4 provided on one side of the presser foot plate 3, a gap between the presser foot plate 4 and the presser foot plate 3, and the sides of the presser foot plate 4 and the presser foot plate 3 that are close to each other have grooves for the needle to move laterally for sewing, so that the two materials can be sewn together. A slider 5 is fixed to the top of the presser foot plate 4, a slide rail 6 is fixed to one side of the outer wall of the presser foot plate 3, the slider 5 is slidably connected to the slide rail 6, and a locking bolt 7 is threadedly connected to one side of the outer wall of the slider 5, with one end of the locking bolt 7 abutting against the slide rail 6.

[0023] Specifically, in this embodiment, a pressure bar 1 is included. In actual use, the sewing machine can adjust the pressure bar 1 up and down to meet the needs of sewing. The specific principle is based on existing technology. A connecting rod 2 is fixed to the bottom end of the pressure bar 1, and a first presser foot plate 3 is fixed to the bottom end of the connecting rod 2. A second presser foot plate 4 is provided on one side of the first presser foot plate 3. The thickness of the second presser foot plate 4 is less than that of the first presser foot plate 3, and a gap is left between the second presser foot plate 4 and the first presser foot plate 3, allowing the sewing thread to pass through the gap between the second presser foot plate 4 and the first presser foot plate 3. A slider 5 is fixed to the top of the second plate 4, and a slide rail 6 is fixed to one side of the outer wall of the first presser foot 3. The slider 5 and the slide rail 6 are slidably connected, so that the height of the second presser foot 4 can be adjusted according to actual use. For example, when folding and locking the edge of materials, the thickness of the folded part at the locking edge is usually twice the normal thickness. Therefore, the presser foot of the existing technology cannot meet the requirements of folding and locking the edge of materials of different thicknesses. A locking bolt 7 is threadedly connected to one side of the outer wall of the slider 5. One end of the locking bolt 7 abuts against the slide rail 6, and the height of the second presser foot 4 is fixed by the locking bolt 7.

[0024] This utility model provides a sewing positioning presser foot, in which presser foot plate 2 4 slides along slide rail 6 via slider 5 and is fixed by locking bolt 7, so that presser foot plate 2 4 and presser foot plate 1 3 can be adjusted to a suitable overlocking mode according to the material thickness. Thus, the presser foot plate can be used to achieve the pressing and positioning effect when folding and overlocking materials of various thicknesses. At the same time, it can also be used to position two materials of different thicknesses during sewing.

[0025] In another embodiment of this utility model, the connecting rod 2 has an insertion groove 10 inside, and the bottom end of the pressure rod 1 is fixed with an insertion rod 11. The insertion rod 11 is inserted into the insertion groove 10. The cross-sections of the insertion groove 10 and the insertion rod 11 are both rectangular, and the insertion rod 11 can be inserted into the insertion groove 10 exactly. A positioning shaft 17 is inserted into one side of the outer wall of the connecting rod 2. A positioning hole 16 is opened inside the insertion rod 11. The positioning shaft 17 extends into the positioning hole 16 and can be inserted into the positioning hole 16 exactly. When the positioning shaft 17 is inserted into the positioning hole 16, the connecting rod 2 and the insertion rod 11 cannot be separated. A baffle 18 is fixed to one end of the positioning shaft 17. A fixing plate 12 is integrally formed at the bottom end of the pressure rod 1. A guide sleeve 13 is welded to one side of the outer wall of the fixing plate 12. A guide rod 14 is integrally formed at one end of the positioning shaft 17. The diameter of the guide rod 14 is much smaller than that of the positioning shaft 17. The guide rod 14 is movably inserted into the... Inside the guide sleeve 13, the bottom of the insertion rod 11 has a notch 15 that communicates with the positioning hole 16. The guide rod 14 can move up and down inside the notch 15, and the positioning shaft 17 cannot pass through the notch 15. The fixing plate 12 is located on one side of the connecting rod 2. The end of the guide rod 14 away from the positioning shaft 17 is fixed with a baffle plate 19. The outside of the guide rod 14 is sleeved with a spring 20 located between the baffle plate 19 and the fixing plate 12. The elastic force of the spring 20 allows the positioning shaft 17 to maintain a stable insertion state with the positioning hole 16. The top and bottom outer walls of the slide rail 6 are both fixed with a stop block 8. The stop block 8 has a limiting effect on the presser foot plate 4, so that the presser foot plate 4 will not detach from the slide rail 6. The bottom outer wall of the presser foot plate 4 is provided with a clearance opening 9 that matches the stop block 8, so that the lowest position of the bottom of the presser foot plate 4 can be adjusted to be flush with the presser foot plate 3. At this time, it can be used for positioning when sewing two pieces of materials of the same thickness.

[0026] Working principle: When using the sewing machine, to adjust the presser foot to the overlock mode, presser foot plate 2 (4) needs to be raised. First, place the thicker part of the material at the bottom of presser foot plate 2 (4), and place the thinner part at the bottom of presser foot plate 1 (3). Then, operate the sewing machine to press down the presser bar 1, thereby pressing presser foot plate 1 (3) against the thinner part of the material. Then, press down presser foot plate 2 (4) to press down against the thicker part where overlocking is needed. Finally, rotate the locking bolt 7 using the screws to engage the locking bolt with the slide rail 6. The pressure foot is fixed by contact, so that there is a certain height difference between the second pressure foot plate 4 and the first pressure foot plate 3. At this time, the pressure foot can be used for folding and edge locking of materials of this thickness. When the pressure foot needs to be disassembled, first press the second baffle plate 19 against the fixed plate 12, and move the positioning shaft 17 out from the inside of the positioning hole 16. Then pull down the connecting rod 2, so that the guide rod 14 can pass through the notch 15, thereby realizing the effect of separating the connecting rod 2 from the plug rod 11, thus realizing the effect of easy disassembly of the pressure foot.

[0027] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sewing positioning presser foot, characterized by, The device includes a pressure rod (1), a connecting rod (2) fixed at the bottom end of the pressure rod (1), a pressure foot plate (3) fixed at the bottom end of the connecting rod (2), a pressure foot plate (4) provided on one side of the pressure foot plate (3), a gap between the pressure foot plate (4) and the pressure foot plate (3), a slider (5) fixed at the top of the pressure foot plate (4), a slide rail (6) fixed on one side of the outer wall of the pressure foot plate (3), the slider (5) and the slide rail (6) being slidably connected, and a locking bolt (7) threadedly connected to one side of the outer wall of the slider (5), with one end of the locking bolt (7) abutting against the slide rail (6).

2. The sewing positioning presser foot according to claim 1, wherein The connecting rod (2) has an insertion groove (10) inside, and the bottom end of the pressure rod (1) is fixed with an insertion rod (11), which is inserted into the insertion groove (10).

3. The sewing positioning presser foot according to claim 2, wherein A positioning shaft (17) is inserted into the outer wall of one side of the connecting rod (2). A positioning hole (16) is opened inside the insertion rod (11). The positioning shaft (17) extends into the interior of the positioning hole (16). A baffle plate (18) is fixed at one end of the positioning shaft (17).

4. The sewing positioning presser foot according to claim 3, wherein The bottom end of the pressure rod (1) is integrally formed with a fixing plate (12), and a guide sleeve (13) is welded to one side of the outer wall of the fixing plate (12). One end of the positioning shaft (17) is integrally formed with a guide rod (14), which is movably inserted into the inside of the guide sleeve (13). The bottom of the insertion rod (11) has a notch (15) communicating with the positioning hole (16).

5. The sewing positioning presser foot according to claim 4, wherein The fixing plate (12) is located on one side of the connecting rod (2), and the guide rod (14) is fixed with a baffle plate (19) at one end away from the positioning shaft (17). A spring (20) is sleeved on the outside of the guide rod (14) between the baffle plate (19) and the fixing plate (12).

6. The sewing positioning presser foot according to claim 1, wherein The top and bottom outer walls of the slide rail (6) are fixed with blocks (8), and the bottom outer wall of the pressure foot plate (4) is provided with a clearance opening (9) that matches the blocks (8).

Images