A presser foot device capable of automatically changing a brush

Abstract

The utility model discloses a kind of automatic brush-changing presser foot devices, applied in presser foot technical field, including presser foot body, the top of the inside of presser foot body is bolted with adjusting body, the output end of adjusting body is bolted with presser foot plate, the right side of the top of presser foot plate is bolted with protective box, the inside of protective box is bolted with bidirectional air pump, the utility model starts bidirectional air pump, bidirectional air pump injects gas into first shell, so that the upper portion gas pressure of first piston plate inside first shell is greater than the pressure of first piston plate lower portion, the upper portion and lower portion pressure inside first shell causes pressure difference, will make upper portion gas push first piston plate to descend, so that first piston rod and first brush descend, first brush can be contacted with clothes, can automatically adjust the up-and-down movement of first brush and second brush, it is convenient to replace brush and contact clothes of different material, improve operating efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of presser foot technology, and specifically relates to a presser foot device that can automatically change brushes. Background Technology

[0002] The automatic brush-changing presser foot device is an innovative feature used in sewing machines in the textile and garment industries. It mainly consists of the presser foot body, a brush-changing mechanism, a drive unit, and a control system. Its purpose is to automatically change the brush size or condition according to different sewing needs during the sewing process, thereby improving sewing quality and efficiency while reducing the tediousness and errors of manual operation.

[0003] Currently, Chinese utility model patent CN206680691U discloses a presser foot device and a side-cutting machine. The presser foot device includes a first presser foot with a presser foot head and a presser foot plate. One side of the presser foot plate has a cutting angle. The width of the presser foot device is equal to the pre-cut width of the fabric seam allowance. The side-cutting machine includes the aforementioned presser foot device and a single-sided cutting blade. This presser foot device and side-cutting machine provide operators with a cutting basis and equipment when cutting fabric seams, improving the consistency of the pre-cut width.

[0004] When existing devices require changing brushes to contact different garments, the machine often needs to be stopped. This involves a complex and tedious process where staff must perform the replacement, resulting in significant time wastage and reduced efficiency. Furthermore, this method can lead to mismatched brushes, affecting subsequent operations. Additionally, after prolonged use, brushes often need to be replaced, but existing devices typically use fixed installations, requiring the entire device to be replaced, leading to resource waste and reduced efficiency. Utility Model Content

[0005] The purpose of this utility model is to provide a presser foot device that can automatically change the brush. Its advantages are that it can automatically change the brush and can also easily install and remove the brush.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a presser foot device capable of automatically changing brushes, comprising a presser foot body, an adjusting body bolted to the top of the inside of the presser foot body, a presser foot plate bolted to the output end of the adjusting body, a protective box bolted to the right side of the top of the presser foot plate, a bidirectional air pump bolted inside the protective box, a first outer shell fixedly connected to the output end of the bidirectional air pump, a first piston plate slidably connected inside the first outer shell, a first piston rod bolted to the bottom of the first piston plate, the first piston rod penetrating the bottom of the first outer shell, a first fixing box bolted to the bottom of the first piston rod, a first brush disposed inside the first fixing box, a second outer shell bolted to the bottom of the inside of the presser foot body, a second piston plate slidably connected inside the second outer shell, a second piston rod bolted to the bottom of the second piston plate, the second piston rod penetrating the bottom of the second outer shell, a second fixing box bolted to the bottom of the second piston rod, a second brush disposed inside the second fixing box, a connecting pipe fixedly connected to the opposite side of the first and second outer shells, and an adjusting mechanism disposed inside both the first and second fixing boxes.

[0007] The above technical solution can automatically adjust the up-and-down movement of the first and second brushes, quickly adjust the contact between the first or second brush and the clothing, facilitate the replacement of brushes with different materials, improve operational efficiency, and improve the quality of the presser foot.

[0008] The present invention is further configured such that the adjustment mechanism includes a first magnetic block, the top of the first magnetic block is fixedly connected to the top of the first fixed box and the second fixed box respectively, the top of the first brush and the second brush are both fixedly connected to a second magnetic block, the top of the second magnetic block is magnetically connected to a third magnetic block, a lever is bolted to the side of the third magnetic block near the connecting tube, and a rectangular groove is opened on the side of the first fixed box and the second fixed box near the connecting tube.

[0009] By adopting the above technical solution, and by setting up a first magnetic block, a second magnetic block, a third magnetic block, a lever, and a rectangular slot, the brush can be replaced quickly, the operation is simple, the operating efficiency is improved, and the waste of resources is saved.

[0010] The present invention is further configured such that sealing rings are bolted to the top and bottom of the first outer shell and the bottom of the second outer shell.

[0011] By adopting the above technical solution, the first and second outer shells can be sealed by setting a sealing ring, preventing gas from escaping and affecting subsequent operations, thus improving the accuracy of operation.

[0012] The present invention is further configured such that both the first piston plate and the second piston plate are made of aluminum alloy plates.

[0013] The above technical solution utilizes aluminum alloy plates, resulting in low density and light weight. Aluminum alloys also possess excellent thermal conductivity, allowing for rapid dissipation of heat generated during piston operation, reducing piston temperature, and preventing overheating that could lead to material performance degradation and mechanical failure. Furthermore, aluminum alloys offer good machinability, making it easy to manufacture piston structures with complex shapes and high precision requirements.

[0014] The present invention is further configured such that the first brush is a wool brush and the second brush is a synthetic fiber brush.

[0015] The above technical solution is adopted as follows: by setting up a wool brush, the wool brush is very soft and its delicate texture can minimize damage to lightweight clothing such as silk, tulle, and cotton tulle, avoiding scratches or snagging. By setting up synthetic fibers, the brush made of this material has high strength, good wear resistance, and can withstand greater pressure. When cleaning heavy clothing, it can more effectively remove stains and is not easily deformed.

[0016] The present invention is further provided that all corners of the pressure script body are rounded.

[0017] By adopting the above technical solution, rounded corners can prevent injuries to workers during operation and improve the practicality of the device.

[0018] The present invention is further configured such that the top of the first fixing box and the first brush, the top of the second fixing box and the second brush are all provided with circular grooves, a threaded rod is rotatably connected inside the circular grooves, and a knob is fixedly connected to the top of the threaded rod.

[0019] By adopting the above technical solution, the first and second brushes can be further fixed by setting a circular groove, a threaded rod and a knob, while facilitating the separation of the third and second magnetic blocks.

[0020] The present invention is further provided that the surface of the lever is provided with anti-slip texture.

[0021] The above technical solution, by setting anti-slip texture, makes it easier for staff to push the lever and prevents slippage from affecting operation.

[0022] In summary, this utility model has the following beneficial effects:

[0023] 1. This utility model, by activating a bidirectional air pump, injects gas into the first outer shell, causing the gas pressure above the first piston plate inside the first outer shell to be greater than the pressure below the first piston plate. This pressure difference between the upper and lower parts of the first outer shell causes the upper gas to push the first piston plate downwards, thus moving the first piston rod and the first brush downwards, allowing the first brush to contact the clothing. Simultaneously, while the bidirectional air pump injects gas into the first outer shell, some gas enters the bottom of the second outer shell through the connecting pipe. This causes the pressure below the second piston plate in the second outer shell to be greater than the pressure above the second piston plate, creating a pressure difference between the upper and lower parts of the second piston plate. This causes the second piston plate to move upwards, allowing the second fixing box and the first... If the first brush needs to be replaced, the bidirectional air pump is activated in reverse. The bidirectional air pump draws away some of the gas from the upper part of the first piston plate, causing the pressure at the upper part of the first piston plate to be lower than the pressure at the lower part. Under the action of the pressure difference, the first piston plate moves upward, which in turn moves the first fixing box and the first brush upward. At the same time, through the action of the connecting pipe, the pressure at the lower part of the second piston plate is lower than the pressure at the upper part. Under the action of the pressure difference, the second piston plate moves downward, which in turn moves the second outer shell and the second brush downward, allowing the second brush to come into contact with the clothing. The system can automatically adjust the up and down movement of the first and second brushes, quickly adjust the contact between the first or second brush and the clothing, facilitate the replacement of brushes with different clothing materials, improve operational efficiency, and improve the quality of the garment presser foot.

[0024] 2. This utility model allows the first and second brushes to be removed by pushing the lever upward, which causes the third magnetic block to move upward and separate from the second magnetic block, so that the third magnetic block comes into contact with the first magnetic block. Rotating the knob causes the threaded rod to move upward and disengage from the circular groove. During installation, the operation is reversed. This allows for quick brush replacement, is simple to operate, improves operating efficiency, and saves resources. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0026] Figure 2 This is a partial structural front view of the present invention;

[0027] Figure 3 This is a partial structural cross-sectional view of the present invention;

[0028] Figure 4 This is the utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0029] Reference numerals: 1. Pressing foot body; 101. Adjustment body; 102. Pressing foot plate; 2. Protective box; 3. Two-way air pump; 4. First outer shell; 5. First piston plate; 6. First piston rod; 7. First fixing box; 8. First brush; 9. Second outer shell; 10. Second piston plate; 11. Second piston rod; 12. Second fixing box; 13. Second brush; 14. Connecting pipe; 15. Adjustment mechanism; 1501. First magnetic block; 1502. Second magnetic block; 1503. Third magnetic block; 1504. Lever; 1505. Rectangular groove; 16. Sealing ring; 17. Circular groove; 18. Threaded rod; 19. Knob. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1:

[0032] refer to Figure 1 , Figure 2 and Figure 3 An automatic brush-changing presser foot device includes a presser foot body 1. An adjusting body 101 is bolted to the top inner side of the presser foot body 1. A presser foot plate 102 is bolted to the output end of the adjusting body 101. A protective box 2 is bolted to the right side of the top of the presser foot plate 102. A bidirectional air pump 3 is bolted inside the protective box 2. The output end of the bidirectional air pump 3 is fixedly connected to a first outer shell 4. A first piston plate 5 is slidably connected inside the first outer shell 4. A first piston rod 6 is bolted to the bottom of the first piston plate 5, penetrating the bottom of the first outer shell 4. A first fixing box 7 is bolted to the bottom of the first piston rod 6. A first brush 8 is disposed inside the first fixing box 7. The bottom inner side of the presser foot body 1... The first housing 4 is bolted to a second outer shell 9, and a second piston plate 10 is slidably connected inside the second outer shell 9. A second piston rod 11 is bolted to the bottom of the second piston plate 10 and passes through the bottom of the second outer shell 9. A second fixing box 12 is bolted to the bottom of the second piston rod 11, and a second brush 13 is provided inside the second fixing box 12. A connecting pipe 14 is fixedly connected to the opposite side of the first outer shell 4 and the second outer shell 9, which can automatically adjust the up and down movement of the first brush 8 and the second brush 13, quickly adjust the contact between the first brush 8 or the second brush 13 and the clothing, facilitate the replacement of brushes to contact different materials of clothing, improve operating efficiency, and improve the quality of the garment presser foot.

[0033] refer to Figure 2 and Figure 3 Sealing rings 16 are bolted to the top and bottom of the first outer shell 4 and the bottom of the second outer shell 9. By setting the sealing rings 16, the first outer shell 4 and the second outer shell 9 can be sealed to prevent gas from flowing out and affecting subsequent operations, thereby improving the accuracy of operation.

[0034] refer to Figure 3Both the first piston plate 5 and the second piston plate 10 are made of aluminum alloy plates. By using aluminum alloy plates, the pistons achieve low density and light weight. Aluminum alloys also have good thermal conductivity, which can quickly dissipate the heat generated during piston operation, reduce piston temperature, and prevent overheating that could lead to material performance degradation and mechanical failure. In addition, aluminum alloys have good machinability, making it easy to manufacture piston structures with complex shapes and high precision requirements.

[0035] refer to Figure 2 The first brush 8 is a wool brush, and the second brush 13 is a synthetic fiber brush. By setting it to wool, the brush is very soft, and its delicate texture can minimize damage to lightweight clothing such as silk, tulle, and cotton gauze, avoiding scratches or snags. By setting it to synthetic fiber, the brush is stronger, more wear-resistant, and can withstand greater pressure. When cleaning heavy clothing, it can more effectively remove stains and is not easily deformed.

[0036] refer to Figure 1 All corners of the pressure plate body 1 are rounded. By setting rounded corners, damage to workers can be avoided during operation, and the practicality of the device can be improved.

[0037] Brief description of usage: By activating the bidirectional air pump 3, gas is injected into the first outer shell 4, causing the gas pressure above the first piston plate 5 inside the first outer shell 4 to be greater than the pressure below the first piston plate 5. This pressure difference between the upper and lower parts of the first outer shell 4 causes the upper gas to push the first piston plate 5 downwards, thus causing the first piston rod 6 and the first brush 8 to move downwards, allowing the first brush 8 to contact the clothing. Simultaneously, while the bidirectional air pump 3 injects gas into the first outer shell 4, some gas enters the bottom of the second outer shell 9 through the connecting pipe 14. This causes the pressure below the second piston plate 10 of the second outer shell 9 to be greater than the pressure above the second piston plate 10, causing the second piston rod 6 to move downwards, thus pushing the first piston plate 5 downwards. The pressure difference between the upper and lower parts of the stopper plate 10 causes the second piston plate 10 to move upward, which in turn causes the second fixing box 12 and the second brush 13 to move upward. If the brush needs to be replaced, the bidirectional air pump 3 is started in reverse. The bidirectional air pump 3 sucks away some of the gas in the upper part of the first piston plate 5, which causes the pressure in the upper part of the first piston plate 5 to be less than the pressure in the lower part. Under the action of the pressure difference, the first piston plate 5 moves upward, which in turn causes the first fixing box 7 and the first brush 8 to move upward. At the same time, through the action of the connecting pipe 14, the pressure in the lower part of the second piston plate 10 is less than the pressure in the upper part. Under the action of the pressure difference, the second piston plate 10 moves downward, which in turn causes the second outer shell 9 and the second brush 13 to move downward, so that the second brush 13 can come into contact with the clothing.

[0038] Example 2:

[0039] refer to Figure 1 An automatic brush-changing presser foot device is provided, with an adjustment mechanism 15 inside both the first fixing box 7 and the second fixing box 12. It is simple to operate and improves operating efficiency.

[0040] refer to Figure 4 The adjustment mechanism 15 includes a first magnetic block 1501. The top of the first magnetic block 1501 is fixedly connected to the top of the first fixed box 7 and the second fixed box 12. The tops of the first brush 8 and the second brush 13 are both fixedly connected to a second magnetic block 1502. The top of the second magnetic block 1502 is magnetically connected to a third magnetic block 1503. A lever 1504 is bolted to the side of the third magnetic block 1503 near the connecting tube 14. A rectangular groove 1505 is provided on the side of the first fixed box 7 and the second fixed box 12 near the connecting tube 14. By setting the first magnetic block 1501, the second magnetic block 1502, the third magnetic block 1503, the lever 1504 and the rectangular groove 1505, the brushes can be quickly replaced, the operation is simple, the operating efficiency is improved, and the waste of resources is saved.

[0041] refer to Figure 3 The top of the first fixing box 7 and the first brush 8, and the top of the second fixing box 12 and the second brush 13 are all provided with circular grooves 17. A threaded rod 18 is rotatably connected inside the circular groove 17, and a knob 19 is fixedly connected to the top of the threaded rod 18. By setting the circular groove 17, the threaded rod 18 and the knob 19, the first brush 8 and the second brush 13 can be further fixed, and at the same time, it is convenient to separate the third magnet 1503 and the second magnet 1502.

[0042] refer to Figure 4 The surface of lever 1504 is provided with anti-slip texture. By providing anti-slip texture, it is easier for staff to push lever 1504 and prevent slippage from affecting operation.

[0043] Brief description of the usage process: By pushing the lever 1504 upward, the lever 1504 causes the third magnetic block 1503 to move upward and separate from the second magnetic block 1502, so that the third magnetic block 1503 contacts the first magnetic block 1501. Rotating the knob 19 causes the threaded rod 18 to move upward and disengage from the circular groove 17, so that the first brush 8 and the second brush 13 can be removed. When installing, the operation is reversed.

[0044] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A presser foot device capable of automatically changing brushes, comprising a presser foot body (1), characterized in that: An adjusting body (101) is bolted to the top of the inner side of the presser foot body (1). A presser foot plate (102) is bolted to the output end of the adjusting body (101). A protective box (2) is bolted to the right side of the top of the presser foot plate (102). A bidirectional air pump (3) is bolted to the inside of the protective box (2). The output end of the bidirectional air pump (3) is fixedly connected to a first outer shell (4). A first piston plate (5) is slidably connected inside the first outer shell (4). A first piston rod (6) is bolted to the bottom of the first piston plate (5). The first piston rod (6) penetrates the bottom of the first outer shell (4). A first fixing box (7) is bolted to the bottom of the first piston rod (6). The inside of the first fixing box (7) The first brush (8) is provided in the part. The bottom of the inner side of the pressure body (1) is bolted to the second outer shell (9). The second piston plate (10) is slidably connected inside the second outer shell (9). The bottom of the second piston plate (10) is bolted to the second piston rod (11). The second piston rod (11) passes through the bottom of the second outer shell (9). The bottom of the second piston rod (11) is bolted to the second fixing box (12). The second brush (13) is provided inside the second fixing box (12). The first outer shell (4) and the second outer shell (9) are fixedly connected to a connecting pipe (14). The first fixing box (7) and the second fixing box (12) are both provided with an adjustment mechanism (15).

2. The presser foot device capable of automatically changing brushes according to claim 1, characterized in that: The adjustment mechanism (15) includes a first magnetic block (1501), the top of which is fixedly connected to the top of the first fixed box (7) and the second fixed box (12) respectively. The tops of the first brush (8) and the second brush (13) are both fixedly connected to a second magnetic block (1502). The top of the second magnetic block (1502) is magnetically connected to a third magnetic block (1503). A lever (1504) is bolted to the side of the third magnetic block (1503) near the connecting tube (14). A rectangular groove (1505) is opened on the side of the first fixed box (7) and the second fixed box (12) near the connecting tube (14).

3. The presser foot device capable of automatically changing brushes according to claim 1, characterized in that: Sealing rings (16) are bolted to the top and bottom of the first outer shell (4) and the bottom of the second outer shell (9).

4. The presser foot device capable of automatically changing brushes according to claim 1, characterized in that: Both the first piston plate (5) and the second piston plate (10) are made of aluminum alloy plates.

5. The presser foot device capable of automatically changing brushes according to claim 1, characterized in that: The first brush (8) is a wool brush, and the second brush (13) is a synthetic fiber brush.

6. The presser foot device capable of automatically changing brushes according to claim 1, characterized in that: All corners of the compression body (1) are rounded.

7. The presser foot device capable of automatically changing brushes according to claim 1, characterized in that: The top of the first fixing box (7) and the first brush (8), the top of the second fixing box (12) and the second brush (13) are all provided with a circular groove (17), and a threaded rod (18) is rotatably connected inside the circular groove (17), and a knob (19) is fixedly connected to the top of the threaded rod (18).

8. The presser foot device capable of automatically changing brushes according to claim 2, characterized in that: The surface of the lever (1504) is provided with anti-slip texture.

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