Presser foot structure

Abstract

The utility model provides a presser foot structure which comprises a connecting block, two cloth pressing plates and four bolts. The connecting block is in a hexahedron shape, a spring hole used for fixing a cloth pressing spring is formed in the upper surface of the connecting block, first kidney-shaped through holes are formed in the left side face and the right side face of the connecting block, the long sides of the first kidney-shaped holes are parallel to the front side face of the connecting block, and two threaded holes are formed in the front side face and the rear side face of the connecting block respectively. The cloth pressing plate comprises a bottom plate and two vertical plates, and the bottom plate is vertically connected with the vertical plates; a second kidney-shaped hole is formed in the vertical plate, and the long edge of the second kidney-shaped hole is parallel to the upper surface of the connecting block. The two vertical plates are clamped on the front side face and the rear side face, and each cloth pressing plate is fixed to the corresponding connecting block through two bolts, two second kidney-shaped holes and two threaded holes. The cloth pressing plate can move in the horizontal direction through the second kidney-shaped hole, the width of the channel of the presser foot structure can be adjusted, and therefore the same presser foot structure can be used for sewing rolling strips with different widths.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, and particularly relates to a presser foot structure. Background Art

[0002] In the process of clothing production, sometimes it is necessary to sew a bias binding (the bias binding can also be called a binding strip) on the fabric to form patterns or characters. During the sewing process of the bias binding, a sewing machine is required. The sewing machine includes a presser foot structure, and the presser foot structure can fix the bias binding and the fabric, so that the sewing needle can smoothly pass through the bias binding and the fabric.

[0003] The presser foot structure includes a presser plate and a strip pressing plate. A strip pressing plate is arranged between two presser plates. The height of the lower surface of the strip pressing plate is higher than the height of the lower surface of the presser plate. The two presser plates and one strip pressing plate enclose a channel with a certain width, and this channel is used for passing the bias binding. When sewing the bias binding, the presser plate presses the fabric, and the strip pressing plate presses the bias binding.

[0004] However, since the width of the channel of the presser foot structure is fixed, a wider bias binding cannot pass through, and a narrower bias binding moves left and right in the channel and cannot be fixed. Therefore, in the production process, it is necessary to prepare presser foot structures with multiple widths. When the width of the tube strip changes, it is necessary to replace the presser foot structure with the corresponding width, which increases the production cost and limits the production efficiency. Content of the Utility Model

[0005] The utility model provides a presser foot structure to solve the technical problem that the width of the channel of the presser foot structure is fixed.

[0006] To solve the above technical problem, the utility model provides a presser foot structure, which includes a connecting block, two presser plates and four bolts; the connecting block is in the shape of a hexahedron, and the connecting block includes an upper surface, a lower surface, a left side surface, a right side surface, a front side surface and a rear side surface. The upper surface is provided with a spring hole for fixing a presser spring. The left side surface and the right side surface are provided with a through first kidney-shaped hole, and the long side of the first kidney-shaped hole is parallel to the front side surface of the connecting block. The front side surface and the rear side surface are respectively provided with two threaded holes;

[0007] The presser plate includes a bottom plate and two vertical plates, and the bottom plate and the vertical plates are perpendicularly connected; the vertical plates are provided with second kidney-shaped holes, and the long sides of the second kidney-shaped holes are parallel to the upper surface of the connecting block; the two vertical plates are clamped between the front side surface and the rear side surface, and each presser plate is fixed on the connecting block through two of the bolts, two of the second kidney-shaped holes and two of the threaded holes.

[0008] Preferably, the presser foot structure further comprises a mounting block, a fixed shaft, the cloth pressing spring, a pressing strip plate and a pressing strip bolt; the mounting block comprises at least two side walls arranged at intervals, and a first through hole for fixing the fixed shaft is arranged on the side wall; the fixed shaft passes through the first through hole and the first kidney-shaped hole to fix the connecting block on the mounting block; the cloth pressing spring is arranged between the spring hole and the mounting block; a pressing strip threaded hole is arranged on the lower surface of the connecting block, and the pressing strip plate is fixed on the lower surface of the connecting block through the pressing strip bolt and the pressing strip threaded hole, and the height of the lower surface of the pressing strip plate is higher than the height of the lower surface of the cloth pressing plate.

[0009] Preferably, the number of the connecting blocks is three; the mounting block comprises four parallel side walls, and one connecting block is arranged between every two adjacent side walls.

[0010] Preferably, the vertical height of the first kidney-shaped hole on the connecting block located in the middle position is greater than the vertical height of the first kidney-shaped holes on the connecting blocks on its two sides.

[0011] Preferably, the distance between every two adjacent side walls is equal.

[0012] Preferably, the presser foot structure further comprises an intermediate positioning block, and the intermediate positioning block is fixed at the front ends of the two cloth pressing plates in the middle position; the shape of the intermediate positioning block is triangular, and one corner of the intermediate positioning block is vertically downward.

[0013] Preferably, the presser foot structure further comprises two roller strip baffles, and one roller strip baffle is respectively installed at the front ends of the cloth pressing plates on both sides.

[0014] Preferably, the presser foot structure further comprises a gasket, and the gasket is installed between the lower surfaces of the pressing strip plate and the connecting block.

[0015] Preferably, two cloth pressing springs are arranged at intervals between each connecting block and the mounting block.

[0016] Preferably, the upper surface of the connecting block extends towards its front side and rear side respectively to form two front and rear steps.

[0017] The utility model provides a presser foot structure, which comprises a connecting block, two cloth pressing plates and four bolts. The cloth pressing plates comprise a bottom plate and two vertical plates. Each cloth pressing plate is fixed on the connecting block through two bolts, two second kidney-shaped holes and two threaded holes. The cloth pressing plate can move horizontally through the second kidney-shaped holes, that is, the distance between the two cloth pressing plates on the same connecting block can be adjusted, so that the width of the channel of the presser foot structure can be adjusted, and thus the same presser foot structure can sew rollers with different widths. Brief Description of the Drawings

[0018] Figure 1 is a schematic structural diagram of a presser foot structure provided by an embodiment of the present utility model.

[0019] Figure 2 is Figure 1 a schematic structural diagram after rotating a certain angle.

[0020] Figure 3 is Figure 1 an exploded view of

[0021] Figure 4 is Figure 3 a schematic structural diagram of a connecting block and a presser plate in

[0022] Figure 5 is Figure 4 a right view of

[0023] [Description of the Reference Numerals is as follows]:

[0024] Connecting block - 1, Presser plate - 2, Bolt - 3, Mounting block - 4, Fixed shaft - 5, Presser spring - 6, Press bar plate - 7, Press bar bolt - 8, Intermediate positioning block - 9, Roller bar baffle - 10, Spacer - 11;

[0025] Spring hole - 101, First kidney - shaped hole - 102, Threaded hole - 103;

[0026] Bottom plate - 201, Vertical plate - 202;

[0027] Second kidney - shaped hole - 2021;

[0028] First through - hole - 401. Detailed Description of the Embodiment

[0029] To make the objectives, advantages, and features of the present utility model clearer, a presser foot structure proposed by the present utility model will be further described in detail below with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non - precise scales, only for conveniently and clearly assisting in explaining the objectives of the embodiments of the present utility model.

[0030] In the description of the present utility model, the qualifier terms such as "first" and "second" are added for convenient description and reference, and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with qualifier terms such as "first" and "second" may explicitly or implicitly include one or more of such features.

[0031] As Figures 1 to 4As shown in the figure, this embodiment provides a presser foot structure, which includes a connecting block 1, two presser cloth plates 2 and four bolts 3. The connecting block 1 is in the shape of a hexahedron, and the connecting block 1 includes an upper surface, a lower surface, a left side surface, a right side surface, a front side surface and a rear side surface. The upper surface is provided with a spring hole 101 for fixing the presser cloth spring 6. The left side surface and the right side surface are provided with through first waist-shaped holes 102. The long side of the first waist-shaped hole 102 is parallel to the front side surface of the connecting block 1. The front side surface and the rear side surface are respectively provided with two threaded holes 103. The presser cloth plate 2 includes a bottom plate 201 and two vertical plates 202. The bottom plate 201 and the vertical plates 202 are perpendicularly connected. The vertical plates 202 are provided with second waist-shaped holes 2021. The long side of the second waist-shaped hole 2021 is parallel to the upper surface of the connecting block 1. The two vertical plates 202 are sandwiched between the front side surface and the rear side surface. Each presser cloth plate 2 is fixed to the connecting block 1 through two bolts 3, two second waist-shaped holes 2021 and two threaded holes 103.

[0032] This embodiment provides a presser foot structure, which includes a connecting block 1, two presser cloth plates 2 and four bolts 3. The presser cloth plate 2 includes a bottom plate 201 and two vertical plates 202. Each presser cloth plate 2 is fixed to the connecting block 1 through two bolts 3, two second waist-shaped holes 2021 and two threaded holes 103. The presser cloth plate 2 can move horizontally through the second waist-shaped holes 2021, that is, the distance between the two presser cloth plates 2 on the same connecting block 1 can be adjusted, realizing that the width of the channel of the presser foot structure can be adjusted, so that the same presser foot structure can sew different-width binding strips.

[0033] Preferably, as Figures 1 to 4 shown, the presser foot structure further includes a mounting block 4, a fixed shaft 5, the presser cloth spring 6, a pressing strip plate 7 and a pressing strip bolt 8. The mounting block 4 includes at least two side walls arranged at intervals, and the side walls are provided with first through holes 401 for fixing the fixed shaft 5. The fixed shaft 5 passes through the first through hole 401 and the first waist-shaped hole 102 to fix the connecting block 1 to the mounting block 4. The presser cloth spring 6 is arranged between the spring hole 101 and the mounting block 4. The lower surface of the connecting block 1 is provided with a pressing strip threaded hole 103. The pressing strip plate 7 is fixed to the lower surface of the connecting block 1 through the pressing strip bolt 8. The height of the lower surface of the pressing strip plate 7 is higher than the height of the lower surface of the presser cloth plate 2. Through the mounting block 4, the presser foot structure can be fixed on the presser foot rod of the sewing machine. Through the pressing strip plate 7, the binding strip can be pressed. The pressing strip plate 7 is fixed to the lower surface of the connecting block 1 through the pressing strip bolt 8, which is convenient for installing and disassembling the pressing strip plate 7.

[0034] Preferably, as Figures 1 to 3As shown, the number of the connecting blocks 1 is three; the mounting block 4 includes four side walls arranged in parallel, and one connecting block 1 is arranged between every two adjacent side walls. By arranging three connecting blocks 1, three groups of pressing plates 2 can be installed. Each group of pressing plates 2 includes two pressing plates 2. The side surfaces of every two pressing plates 2 and the lower surface of the pressing strip plate 7 between the two pressing plates 2 enclose a channel for passing the rolling strip. The three groups of pressing plates 2 and the three groups of pressing strip plates 7 can sew three rolling strips simultaneously, improving the production efficiency.

[0035] Preferably, as Figure 3 shown, the vertical height of the first kidney-shaped hole 102 on the connecting block 1 located in the middle position is greater than the vertical height of the first kidney-shaped holes 102 on the connecting blocks 1 on its both sides. When sewing two pieces of fabric, the height of the splicing part between the first piece of fabric and the second piece of fabric is higher than that of the two sides, making the vertical height of the first kidney-shaped hole 102 on the connecting block 1 in the middle position higher. This can make the up and down stroke of the connecting block 1 in the middle position larger, so that the two pressing plates 2 in the middle position can more smoothly press the splicing part between the first piece of fabric and the second piece of fabric. In other embodiments, if the splicing part between the two pieces of fabric is not in the middle position, the connecting block 1 with the largest vertical height of the first kidney-shaped hole 102 can be moved to the outside.

[0036] Preferably, as Figure 3 shown, the distance between every two adjacent side walls is equal, so that the contour dimensions of the three connecting blocks 1 are the same, which is convenient for replacing each connecting block 1.

[0037] Preferably, as Figure 3 shown, the presser foot structure further includes an intermediate positioning block 9, and the intermediate positioning block 9 is fixed at the front ends of the two pressing plates 2 in the middle position; the shape of the intermediate positioning block 9 is triangular, and one corner of the intermediate positioning block 9 is vertically downward. The downward corner of the intermediate positioning block 9 can press the contact part between the two pieces of fabric, making the splicing part smoother.

[0038] Preferably, as Figure 3 shown, the presser foot structure further includes two rolling strip baffles 10, and one rolling strip baffle 10 is respectively installed at the front ends of the pressing plates 2 on both sides. The rolling strip baffles 10 can limit the rolling strip to prevent the rolling strip from jumping up during the sewing process.

[0039] Preferably, as Figure 3 shown, the presser foot structure further includes a gasket 11, and the gasket 11 is installed between the lower surface of the pressing strip plate 7 and the connecting block 1. By changing the thickness of the gasket 11, the height where the pressing strip plate 7 is located can be changed, so as to adapt to rolling strips of different thicknesses.

[0040] Preferably, asFigure 3 As shown, two pressing cloth springs 6 are arranged at intervals between each of the connecting blocks 1 and the mounting blocks 4. Arranging two pressing cloth springs 6 can improve the elasticity and stability of the connecting blocks 1.

[0041] Preferably, as Figures 3 to 5 shown, front and rear steps are respectively formed by the upper surface of the connecting block 1 extending towards its front side and rear side. The front and rear steps can limit the upper surface of the vertical plate 202 of the pressing cloth plate 2, improving the stability of the pressing cloth plate 2.

[0042] In summary, the present utility model provides a presser foot structure, including connecting blocks 1, two pressing cloth plates 2 and four bolts 3. The pressing cloth plates 2 include bottom plates 201 and two vertical plates 202. Each pressing cloth plate 2 is fixed to the connecting block 1 through two bolts 3, two second waist-shaped holes 2021 and two threaded holes 103. The pressing cloth plate 2 can move horizontally through the second waist-shaped holes 2021, that is, the distance between the two pressing cloth plates 2 on the same connecting block 1 can be adjusted, realizing that the width of the channel of the presser foot structure can be adjusted, so that the same presser foot structure can sew binding strips of different widths.

[0043] The above description is only a description of the preferred embodiments of the present utility model, and does not limit the scope of the present utility model in any way. Any changes and modifications made by those of ordinary skill in the art according to the above disclosure belong to the protection scope of the present utility model.

Claims

1. A presser foot structure, characterized in that, It includes a connecting block, two cloth pressing plates and four bolts; the connecting block is in the shape of a hexahedron, and the connecting block includes an upper surface, a lower surface, a left side surface, a right side surface, a front side surface and a rear side surface. The upper surface is provided with a spring hole for fixing the cloth pressing spring. The left side surface and the right side surface are provided with through first kidney-shaped holes. The long side of the first kidney-shaped hole is parallel to the front side surface of the connecting block. The front side surface and the rear side surface are respectively provided with two threaded holes. The cloth pressing plate includes a bottom plate and two vertical plates, and the bottom plate and the vertical plates are perpendicularly connected; the vertical plates are provided with second kidney-shaped holes, and the long side of the second kidney-shaped hole is parallel to the upper surface of the connecting block; the two vertical plates are sandwiched between the front side surface and the rear side surface, and each cloth pressing plate is fixed on the connecting block through two of the bolts, two of the second kidney-shaped holes and two of the threaded holes.

2. The presser foot structure according to claim 1, wherein The presser foot structure further includes a mounting block, a fixed shaft, the cloth pressing spring, a strip pressing plate and a strip pressing bolt; the mounting block includes at least two side walls arranged at intervals, and the side walls are provided with first through holes for fixing the fixed shaft; the fixed shaft passes through the first through hole and the first kidney-shaped hole to fix the connecting block on the mounting block; the cloth pressing spring is arranged between the spring hole and the mounting block; the lower surface of the connecting block is provided with a strip pressing threaded hole, and the strip pressing plate is fixed on the lower surface of the connecting block through the strip pressing bolt and the strip pressing threaded hole, and the height of the lower surface of the strip pressing plate is higher than the height of the lower surface of the cloth pressing plate.

3. The presser foot structure according to claim 2, characterized in that, The number of the connecting blocks is three; the mounting block includes four parallel side walls, and one of the connecting blocks is arranged between every two adjacent side walls.

4. The presser foot structure according to claim 3, wherein, The vertical height of the first kidney-shaped hole on the connecting block in the middle position is greater than the vertical height of the first kidney-shaped holes on the connecting blocks on its two sides.

5. The presser foot structure according to claim 3, characterized in that, The distance between every two adjacent side walls is equal.

6. The presser foot structure according to claim 4, wherein The presser foot structure further includes an intermediate positioning block, and the intermediate positioning block is fixed at the front ends of the two cloth pressing plates in the middle position; the intermediate positioning block is in the shape of a triangle, and one of the corners of the intermediate positioning block is vertically downward.

7. The presser foot structure according to claim 6, characterized in that, The presser foot structure further includes two roller baffle plates, and one of the roller baffle plates is respectively installed at the front ends of the cloth pressing plates on both sides.

8. The presser foot structure according to claim 2, characterized in that The presser foot structure further includes a gasket, and the gasket is installed between the strip pressing plate and the lower surface of the connecting block.

9. The presser foot structure according to claim 2, characterized in that, Two of the cloth pressing springs are arranged at intervals between each connecting block and the mounting block.

10. A presser foot structure according to claim 1, characterized in that, The upper surface of the connecting block extends forward and backward to form two front and rear steps respectively towards its front side surface and rear side surface.

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