Sewing machine automatic oil coating device based on rotary coating

Abstract

The utility model discloses an automatic oiling device of a sewing machine based on rotary coating, which comprises a sewing machine head, a connecting cylinder, an oil cylinder and a lifting rod, a driving motor is mounted on one side of the top end of the sewing machine head, and an oil cylinder is mounted on the other side of the top end of the sewing machine head. A first gear is installed at the output shaft end of the driving motor, a connecting cylinder is arranged in the middle of one side of the top end of the sewing machine head in a connected mode, and the sewing machine head is in sliding connection with the connecting cylinder. The lifting rod is sleeved with the connecting cylinder, oil can be input into the connecting cylinder through the oil cylinder, meanwhile, the driving motor is started to drive the first gear to rotate, at the moment, the first gear can push the second gear outside the connecting cylinder to rotate, and the connecting cylinder rotates outside the lifting rod; and a threaded groove is formed in the connecting cylinder, so that the outer part of the lifting rod can be conveniently and rapidly coated with oil.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to an automatic oiling device for sewing machines based on rotary coating. 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 material are interwoven or sewn together. During the use of the sewing machine, whether it is electrically driven or manually driven, the lifting rod inside the machine head can be used to drive the sewing needle up and down to achieve sewing. In order to reduce the friction generated by the lifting rod during work, it is generally necessary to oil the outer periphery of the lifting rod.

[0003] An automatic oiling device for sewing machines based on rotary coating is disclosed in the Chinese utility model patent application disclosure specification CN111826822A. Through the design of a piston elastically connected to a syringe inside an oil filling plate, when the oil filling plate starts to rotate, the piston can move outward under the action of centrifugal force, thereby pushing the oil into the tapered mouth for coating. The faster the rotation, the more oil enters the tapered mouth. The rotation of the oil filling plate can also make the oil more evenly coated on the surface of the lifting rod. However, the uniformity of oiling the lifting rod is poor, and the oil coating on the outside of the lifting rod may be uneven, affecting the stability of the subsequent use of the lifting rod and the service life of the lifting rod. Utility Model Content

[0004] The utility model aims to provide an automatic oiling device for sewing machines based on rotary coating to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automatic oiling device for a sewing machine based on rotary coating, comprising a sewing machine head, a connecting cylinder, an oil cylinder and a lifting rod, a driving motor is installed on one side of the top of the sewing machine head, a first gear is installed on the output shaft end of the driving motor, a connecting cylinder is connected to the middle position of one side of the top of the sewing machine head, the sewing machine head and the connecting cylinder are slidably connected, a second gear is fixedly connected to one side of the outside of the connecting cylinder, and a lifting rod is installed in the middle position inside the sewing machine head.

[0006] Preferably, a limiting groove is provided on one side of the exterior of the connecting tube, and a threaded groove is provided inside the connecting tube.

[0007] Preferably, an oil cylinder is connected to the top end of the connecting cylinder, and the connecting cylinder and the oil cylinder are fixedly connected. A rubber plug is connected to the middle position of the top end of the oil cylinder, and the oil cylinder and the rubber plug are movably connected.

[0008] Preferably, a bolt is connected to the middle position of one side of the sewing machine head, the sewing machine head and the bolt are threadedly connected, a square block is connected to one side of the bolt, and the bolt and the square block are rotatably connected.

[0009] Preferably, a positioning rod is connected to the middle position of one side of the square block, and the square block is fixedly connected to the positioning rod.

[0010] Preferably, a ball is connected to the middle position of one side of the positioning rod, and the positioning rod and the ball are rotatably connected.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1. This automatic oiling device for sewing machines based on rotary coating is provided with a connecting cylinder on the outside of the lifting rod, and oil can be input into the inside of the connecting cylinder through the oil cylinder. At the same time, the driving motor is started to drive the first gear to rotate. At this time, the first gear can push the second gear outside the connecting cylinder to rotate, and the connecting cylinder is rotated outside the lifting rod. In addition, a threaded groove is provided inside the connecting cylinder to facilitate the rapid coating of oil on the outside of the lifting rod, thereby improving the stability and uniformity of the overall oiling of the oiling device;

[0013] 2. This automatic oiling device for sewing machines based on rotary coating is provided with a bolt on one side of the sewing machine head. When the bolt rotates, the positioning rod can be pushed to move through the square block. When the ball is inserted into the limiting groove on the connecting cylinder, the stable limiting work of the connecting cylinder can be completed. When the ball is pulled out of the limiting groove on the connecting cylinder, the oiling device can be quickly disassembled, thereby facilitating the subsequent inspection and maintenance of the oiling device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0016] Figure 3 For this utility model Figure 2 The enlarged structural diagram at A in the middle;

[0017] Figure 4 It is a schematic cross-sectional structural diagram of the connecting tube of the utility model.

[0018] In the figure: 1, sewing machine head; 2, driving motor; 201, first gear; 3, connecting tube; 301, limiting groove; 302, threaded groove; 4, second gear; 5, oil cylinder; 501, rubber plug; 6, bolt; 601, square block; 602, positioning rod; 603, ball bearing; 7, lifting rod. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 The utility model provides an embodiment: an automatic oiling device for a sewing machine based on rotary coating, comprising a sewing machine head 1, a connecting tube 3, an oil cylinder 5 and a lifting rod 7. A driving motor 2 is installed on one side of the top of the sewing machine head 1. A first gear 201 is installed on the output shaft end of the driving motor 2. When the driving motor 2 is started, the first gear 201 can be driven to rotate. At this time, the first gear 201 can push the second gear 4 outside the connecting tube 3 to drive the connecting tube 3 to rotate as a whole.

[0021] A connecting tube 3 is connected to the middle position of one side of the top of the sewing machine head 1. The sewing machine head 1 and the connecting tube 3 are slidably connected. A limiting groove 301 is provided on one side of the outside of the connecting tube 3. A threaded groove 302 is provided inside the connecting tube 3. The positioning rod 602 is inserted into the limiting groove 301 on the connecting tube 3, which can achieve a stable limiting effect on the connecting tube 3. The threaded groove 302 is provided inside the connecting tube 3 to facilitate the rapid coating of lubricating oil inside the connecting tube 3.

[0022] A second gear 4 is fixedly connected to one side of the outside of the connecting cylinder 3, an oil cylinder 5 is connected to the top of the connecting cylinder 3, the connecting cylinder 3 and the oil cylinder 5 are fixedly connected, a rubber plug 501 is connected to the middle position of the top of the oil cylinder 5, the oil cylinder 5 and the rubber plug 501 are movably connected, the inside of the oil cylinder 5 can store lubricating oil, and the rubber plug 501 can be opened to add lubricating oil to the inside of the oil cylinder 5;

[0023] A bolt 6 is connected to the middle position of one side of the sewing machine head 1, and the sewing machine head 1 and the bolt 6 are threadedly connected. A square block 601 is connected to one side of the bolt 6, and the bolt 6 and the square block 601 are rotatably connected. A positioning rod 602 is connected to the middle position of one side of the square block 601, and the square block 601 and the positioning rod 602 are fixedly connected. The bolt 6 can rotate to push the positioning rod 602 to move through the square block 601. At the same time, the bolt 6 and the square block 601 are rotatably connected, so the rotation of the bolt 6 will not affect the rotation of the square block 601.

[0024] A ball 603 is connected to the middle position of one side of the positioning rod 602. The positioning rod 602 and the ball 603 are rotationally connected. The ball 603 can reduce the friction between the positioning rod 602 and the limiting groove 301, thereby ensuring the stability of the rotation of the connecting tube 3.

[0025] A lifting rod 7 is installed in the middle position inside the sewing machine head 1. The lifting rod 7 is a conventional lifting rod for sewing machines on the market. The sewing machine head 1 and the lifting rod 7 are both prior arts.

[0026] When the embodiment of the present application is in use: the connecting tube 3 is inserted into the outer wall of the lifting rod 7 at the top of the sewing machine head 1. At this time, the bolt 6 on the sewing machine head 1 is rotated, and the bolt 6 can push the positioning rod 602 through the square block 601 to insert into the limiting groove 301 on the connecting tube 3, thereby playing a stable limiting role for the connecting tube 3. At this time, the rubber plug 501 is opened, and the lubricating oil can be poured into the interior of the oil cylinder 5, and the first gear 201 can be driven to rotate by starting the driving motor 2. At this time, the first gear 201 can push the second gear 4 outside the connecting tube 3 to rotate, so that the connecting tube 3 rotates outside the lifting rod 7. At the same time, the interior of the connecting tube 3 is provided with a threaded groove 302 so that the lubricating oil can be evenly coated on the outer wall of the lifting rod 7.

[0027] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An automatic oiling device for sewing machines based on rotary coating, characterized in that , comprising a sewing machine head (1), a connecting tube (3), an oil cylinder (5) and a lifting rod (7), wherein a driving motor (2) is installed on one side of the top of the sewing machine head (1), a first gear (201) is installed on the output shaft end of the driving motor (2), a connecting tube (3) is connected to the middle position of one side of the top of the sewing machine head (1), the sewing machine head (1) and the connecting tube (3) are slidably connected, a second gear (4) is fixedly connected to one side of the outside of the connecting tube (3), and a lifting rod (7) is installed in the middle position of the inside of the sewing machine head (1).

2. The automatic oiling device for sewing machines based on rotary coating according to claim 1, characterized in that: A limiting groove (301) is provided on one side of the exterior of the connecting tube (3), and a thread groove (302) is provided inside the connecting tube (3).

3. The automatic oiling device for sewing machines based on rotary coating according to claim 1, characterized in that: The top end of the connecting cylinder (3) is connected to an oil cylinder (5), and the connecting cylinder (3) and the oil cylinder (5) are fixedly connected. The middle position of the top end of the oil cylinder (5) is connected to a rubber plug (501), and the oil cylinder (5) and the rubber plug (501) are movably connected.

4. The automatic oiling device for sewing machines based on rotary coating according to claim 1, characterized in that: A bolt (6) is connected to the middle position of one side of the sewing machine head (1), and the sewing machine head (1) and the bolt (6) are threadedly connected. A square block (601) is connected to one side of the bolt (6), and the bolt (6) and the square block (601) are rotatably connected.

5. The automatic oiling device for sewing machines based on rotary coating according to claim 4, characterized in that: A positioning rod (602) is connected and arranged at the middle position of one side of the square block (601), and the square block (601) and the positioning rod (602) are fixedly connected.

6. The automatic oiling device for sewing machines based on rotary coating according to claim 5, characterized in that: A ball bearing (603) is connected to the middle position of one side of the positioning rod (602), and the positioning rod (602) and the ball bearing (603) are rotationally connected.

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