Presser foot lifting eccentric connecting rod for sewing machine

Abstract

The presser foot lifting eccentric connecting rod for the sewing machine comprises a sleeve rod, a fixing assembly is arranged on the surface of the sleeve rod, a sliding rod is arranged in the sleeve rod, fixing rings are fixedly connected to one end of the sleeve rod and one end of the sliding rod, and rotating rings are arranged in the two fixing rings. According to the presser foot lifting eccentric connecting rod for the sewing machine, through the arrangement of the fixing assembly, when the device is fixed, a moving block is pulled, the moving block moves to drive an inserting rod to move, at the moment, a connecting spring is in a stretching state, a sliding rod is moved, the sliding rod moves in a sleeve rod, and after the sliding rod moves to a proper position, the moving block is loosened; the connecting spring drives the moving block and the inserting rod to reset, the inserting rod is inserted into the inserting opening to fix the sliding rod, and therefore the length of the device can be adjusted according to the specific condition of sewing materials, parts do not need to be replaced or complex adjusting operation does not need to be conducted, and the working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of eccentric linkage technology for sewing machines, specifically to an eccentric linkage for lifting the presser foot of a sewing machine. Background Technology

[0002] As a key piece of equipment in the textile and apparel industry, the continuous advancement of sewing machine technology drives the development of the entire industry. In recent years, with consumers' increasing demands for clothing quality and apparel manufacturers' pursuit of efficient and precise production, the functions and performance of sewing machines have been continuously upgraded. This places higher demands on various components of the sewing machine, among which the presser foot lifting mechanism, as an important part affecting the convenience of sewing operation and sewing quality, needs continuous improvement to adapt to new production needs.

[0003] Traditional sewing machines require adjustments to the length of the eccentric linkage for pressing and lifting the seam allowance based on the specific fabric being sewn. Most existing linkages are fixed, and adjustments require replacing different linkages to ensure proper operation. This process wastes a significant amount of time, thus impacting the machine's production efficiency.

[0004] Therefore, it is necessary to invent an eccentric linkage for lifting the presser foot of a sewing machine to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is as follows: to provide a sewing machine presser foot lifting eccentric connecting rod with high practicality, simple operation, and relatively simple structure, which solves the problem mentioned in the background art that traditional sewing machines need to adjust the length of the pressing and lifting eccentric connecting rod according to the specific conditions of the sewing material during operation. Most existing connecting rods are in a fixed state, and different connecting rods need to be replaced to make them work properly when adjusting them. This process wastes a lot of time and thus affects the production efficiency of the device.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A presser foot lifting eccentric linkage for a sewing machine includes a sleeve rod. A fixing assembly is provided on the surface of the sleeve rod, and a sliding rod is provided inside the sleeve rod. A fixing ring is fixedly connected to one end of both the sleeve rod and the sliding rod. A rotating ring is provided inside each of the two sets of fixing rings. Several sets of clamping assemblies are fixedly connected to the surfaces of the two sets of rotating rings. Each fixing assembly includes a connecting spring disposed on the surface of the sleeve rod, and a plug rod is sleeved inside the connecting spring. A moving block is fixedly connected to one end of the plug rod. Each set of clamping assemblies includes a fixing block fixedly connected to the surfaces of the two sets of rotating rings. A threaded rod is threadedly connected to the interior of each fixing block, and a pressing plate is rotatably connected to one end of the threaded rod.

[0008] As a further embodiment of this utility model: a collar is fixedly connected to one side of each of the two sets of extrusion plates, and the two sets of threaded rods are rotatably connected inside the collar. The collar serves to limit the movement of the threaded rods.

[0009] As a further embodiment of this utility model: friction pads are fixedly connected to one side of both sets of extrusion plates. The material of both sets of friction pads is natural rubber. By setting the friction pads, the friction between the device and the sewing machine connector is increased.

[0010] As a further embodiment of this utility model: a connecting rod is fixedly connected to one end of each of the several sets of threaded rods, and a rotating block is fixedly connected to one end of each of the several sets of connecting rods. The rotating block serves to drive the threaded rod to rotate.

[0011] As a further embodiment of this utility model: the surface of the sliding rod is provided with several sets of insertion interfaces, and the insertion rod is inserted into the interior of the insertion interface. The insertion interface serves to connect with the insertion rod.

[0012] As a further embodiment of this utility model: the surface of the sleeve rod is provided with a placement opening, one end of the connecting spring is fixedly connected to the inside of the placement opening, and the other end of the connecting spring is fixedly connected to one side of the moving block. The connecting spring serves to drive the plug rod to reset.

[0013] As a further embodiment of this utility model: an oil inlet pipe is provided on one side of each of the two sets of fixing rings, and a sealing cap is threaded to the outer side of each of the two sets of oil inlet pipes. The oil inlet pipes serve to add lubricating oil.

[0014] The beneficial effects of this utility model are:

[0015] 1. By setting up the fixing components, when fixing the device, pulling the moving block moves the insertion rod, and the connecting spring is in a stretched state. Moving the sliding rod moves it inside the sleeve rod. When the sliding rod moves to the appropriate position, releasing the moving block causes the connecting spring to reset the moving block and the insertion rod. The insertion rod is then inserted into the insertion interface, fixing the sliding rod. This allows the length of the device to be adjusted according to the specific conditions of the sewing material without replacing parts or performing complex adjustments, thus improving work efficiency.

[0016] 2. With the clamping assembly in place, the device is installed on the sewing machine during use. Rotating the rotating block causes the threaded rod to rotate, which in turn moves the extrusion plate. The extrusion plate then presses against the sewing machine connector, allowing the eccentric connecting rod to be stably installed on the sewing machine and work in conjunction with other moving parts to achieve the lifting and lowering of the presser foot. This also allows the device to be installed on sewing machines of different sizes. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of the eccentric connecting rod for lifting the presser foot of this utility model;

[0019] Figure 2 This is a schematic diagram of the connecting rod fixing assembly of this utility model;

[0020] Figure 3 This is a schematic diagram of the connecting rod oil inlet pipe structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the connecting rod clamping assembly of this utility model.

[0022] In the diagram: 1. Sleeve rod; 2. Fixing assembly; 201. Connecting spring; 202. Insertion rod; 203. Moving block; 3. Sliding rod; 4. Fixing ring; 5. Rotating ring; 6. Clamping assembly; 601. Fixing block; 602. Threaded rod; 603. Extrusion plate; 7. Sleeve ring; 8. Friction pad; 9. Connecting rod; 10. Rotating block; 11. Insertion interface; 12. Placement port; 13. Oil inlet pipe; 14. Sealing cap. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1-4As shown, a presser foot lifting eccentric linkage for a sewing machine includes a sleeve rod 1. A fixing component 2 is provided on the surface of the sleeve rod 1. The fixing component 2 allows the device to adjust its length according to the specific condition of the sewing material without requiring replacement parts or complex adjustments, thus improving work efficiency. A sliding rod 3 is provided inside the sleeve rod 1. A fixing ring 4 is fixedly connected to one end of both the sleeve rod 1 and the sliding rod 3. Rotating rings 5 ​​are provided inside both sets of fixing rings 4. Several sets of clamping components 6 are fixedly connected to the surfaces of the two sets of rotating rings 5. The clamping components 6 enable the device to stabilize... The device is fixedly installed on a sewing machine and works in conjunction with other moving parts to realize the lifting and lowering movement of the presser foot. It also allows the device to be installed on sewing machines of different sizes. The fixing component 2 includes a connecting spring 201 set on the surface of the sleeve rod 1. The connecting spring 201 is fitted with a plug rod 202. One end of the plug rod 202 is fixedly connected to a moving block 203. Several sets of clamping components 6 each include a fixing block 601 fixedly connected to the surface of two sets of rotating rings 5. The fixing block 601 is threadedly connected to a threaded rod 602. One end of the threaded rod 602 is rotatably connected to a pressing plate 603.

[0025] Each of the two sets of extrusion plates 603 has a collar 7 fixedly connected to one side, and the two sets of threaded rods 602 are rotatably connected inside the collar 7. The collar 7 serves to limit the movement of the threaded rods 602.

[0026] Friction pads 8 are fixedly connected to one side of both sets of extrusion plates 603. The material of both sets of friction pads 8 is natural rubber. The friction pads 8 increase the friction between the device and the sewing machine connector.

[0027] A connecting rod 9 is fixedly connected to one end of several sets of threaded rods 602, and a rotating block 10 is fixedly connected to one end of several sets of connecting rods 9. The rotating block 10 is used to drive the threaded rods 602 to rotate.

[0028] The surface of the sliding rod 3 is provided with several sets of insertion interfaces 11. The insertion rod 202 is inserted into the inside of the insertion interface 11. The insertion interface 11 serves to connect with the insertion rod 202.

[0029] The sleeve rod 1 has a placement opening 12 on its surface. One end of the connecting spring 201 is fixedly connected to the inside of the placement opening 12, and the other end of the connecting spring 201 is fixedly connected to one side of the moving block 203. The connecting spring 201 is used to drive the plug rod 202 to reset.

[0030] Each of the two sets of fixing rings 4 has an oil inlet pipe 13 on one side, and the outer side of each set of oil inlet pipes 13 is threaded with a sealing cap 14. The oil inlet pipe 13 serves to add lubricating oil.

[0031] The working principle of this utility model is as follows: When fixing the device, the moving block 203 is pulled, and the moving block 203 moves, causing the insertion rod 202 to move. At this time, the connecting spring 201 is in a stretched state. The sliding rod 3 is moved, and the sliding rod 3 moves inside the sleeve rod 1. When the sliding rod 3 moves to the appropriate position, the moving block 203 is released, and the connecting spring 201 drives the moving block 203 and the insertion rod 202 to reset. The insertion rod 202 is inserted into the insertion interface 11, fixing the sliding rod 3. Thus, the length of the device can be adjusted according to the specific conditions of the sewing material without replacing parts or performing complicated adjustment operations, which improves work efficiency.

[0032] When in use, the device is installed on the sewing machine. Rotating the rotating block 10 causes the threaded rod 602 to rotate, which in turn pushes the pressing plate 603 to move. The pressing plate 603 presses the sewing machine connector, allowing the eccentric connecting rod to be stably installed on the sewing machine and work in conjunction with other moving parts to achieve the lifting and lowering movement of the presser foot. At the same time, the device can be installed on sewing machines of different specifications.

[0033] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A presser foot lifting eccentric linkage for a sewing machine, comprising a sleeve rod (1), characterized in that: The sleeve (1) is provided with a fixing component (2) on its surface, and a sliding rod (3) is provided inside the sleeve (1). One end of both the sleeve (1) and the sliding rod (3) is fixedly connected to a fixing ring (4). The two sets of fixing rings (4) are provided with rotating rings (5) inside each set. Several sets of clamping components (6) are fixedly connected to the surfaces of the two sets of rotating rings (5). The fixing component (2) includes a connecting spring (201) disposed on the surface of the sleeve rod (1), and a plug rod (202) is sleeved inside the connecting spring (201). A moving block (203) is fixedly connected to one end of the plug rod (202). Each of the clamping assemblies (6) includes a fixing block (601) fixedly connected to the surface of two sets of rotating rings (5). The fixing block (601) is internally threaded with a threaded rod (602), and one end of the threaded rod (602) is rotatably connected to a pressing plate (603).

2. The eccentric linkage for lifting the presser foot of a sewing machine according to claim 1, characterized in that, Both sets of extrusion plates (603) are fixedly connected to one side of a collar (7), and both sets of threaded rods (602) are rotatably connected to the inside of the collar (7).

3. The eccentric linkage for lifting the presser foot of a sewing machine according to claim 1, characterized in that, One side of each of the two sets of extrusion plates (603) is fixedly connected with a friction pad (8), and the material of the two sets of friction pads (8) is natural rubber.

4. The eccentric linkage for lifting the presser foot of a sewing machine according to claim 1, characterized in that, One end of each of the several sets of threaded rods (602) is fixedly connected to a connecting rod (9), and one end of each of the several sets of connecting rods (9) is fixedly connected to a rotating block (10).

5. The eccentric linkage for lifting the presser foot of a sewing machine according to claim 1, characterized in that, The surface of the sliding rod (3) is provided with several sets of insertion interfaces (11), and the insertion rod (202) is inserted into the interior of the insertion interface (11).

6. The eccentric linkage for lifting the presser foot of a sewing machine according to claim 1, characterized in that, The sleeve rod (1) has a placement opening (12) on its surface. One end of the connecting spring (201) is fixedly connected to the inside of the placement opening (12), and the other end of the connecting spring (201) is fixedly connected to one side of the moving block (203).

7. The eccentric linkage for lifting the presser foot of a sewing machine according to claim 1, characterized in that, Both sets of fixed rings (4) have an oil inlet pipe (13) on one side, and both sets of oil inlet pipes (13) have a sealing cap (14) threaded to their outer sides.

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