Automatic presser foot lifting device
By designing an automatic presser foot lifting device, the foot pedal and linkage mechanism are used to realize the automatic lifting of the sewing machine, which solves the problem of interruption of manual operation of traditional sewing machines and improves production efficiency.
Patent Information
- Application Number
- CN202323327971.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2033-12-07
AI Technical Summary
During operation, traditional sewing machines need to manually change the presser lifting device, resulting in interruption of sewing operations and reduced production efficiency.
Design an automatic presser foot lifting device that drives a series of connecting rods and wheel mechanisms through the rotation of the foot pedal to automatically lift the presser foot when the sewing machine is in use.
The sewing machine automatically lifts the pressing foot during use, avoiding the interruption caused by manual operation, and improved production efficiency.
Smart Images
Figure CN222390033U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sewing machines, in particular to an automatic presser foot lifting device. Background Art
[0002] The presser foot lifter is used to hold down the fabric in a sewing machine. It is usually used in the sewing work of a sewing machine. When one workpiece is quickly sewn and the next workpiece is to be sewn, it is necessary to manually push the lever on the side of the sewing machine to rotate the cam at the end of the lever to an angle, thereby driving a connecting rod mechanism to move upward, causing the presser foot lifter to lift upward, so that the workpieces are only connected by line segments without causing the stitches to become tangled.
[0003] However, the traditional method of changing the height of the presser foot lifter by manual dialing will cause the sewing operation to be interrupted due to the manual effect, which will inevitably lead to the disadvantage of reduced production efficiency. In order to improve efficiency, some industry practitioners have designed a linkage mechanism and an electromagnetic drive device to automatically control the presser foot lifter at the appropriate time using a computer program. At present, an electromagnetic device is installed at the rear end of the sewing machine. Because it is far away from the presser foot lifter, a long connecting rod is set inside the sewing machine, which is indirectly guided and connected to the internal rod body of the presser foot lifter to control the rise or fall of the presser foot lifter. The disadvantage is that because the automatic control device is set at the far end, the strength of the connecting rod in the design of the connecting rod mechanism, the assembly precision, and the manufacturing cost required for more components are higher, and the error value is easier to use and needs to be adjusted after a shorter time. For this reason, we propose an automatic presser foot lifter. Utility Model Content
[0004] The utility model provides an automatic presser foot lifting device, which solves the problem in the related art that the presser foot device needs to be lifted manually during the operation of the sewing machine.
[0005] The technical solution of the utility model is as follows:
[0006] An automatic presser foot lifting device comprises a support base, a rotating shaft is fixedly provided on one side of the support base, a foot pedal is sleeved on the outer wall of the rotating shaft, a first fixing column is fixedly provided on one side of the outer wall of the foot pedal, a first connecting rod is rotatably provided on the upper outer wall of the first fixing column, a second connecting rod is rotatably provided on one side of the top end of the first connecting rod, a fixing rod is fixedly provided on the outer wall of the second connecting rod, a fixing plate is rotatably provided on one side of the fixing rod, a fixing rotating wheel is fixedly provided on the outer wall of the fixing rotating wheel, a bracket is rotatably provided on the lower part of the bracket, a U-shaped groove is rotatably provided on the bottom end of the U-shaped groove, and a fixing block is detachably provided on
[0007] Preferably, a support column is fixedly provided at the top of the support base, a table top is fixedly provided at the top of the support column, a support plate is fixedly provided on one side surface of the top of the table top, a fixing groove is fixedly provided on the top of the support plate, a connecting plate is rotatably provided inside the fixing groove, a scissors is fixedly provided on one side of the bottom end of the connecting plate, a sliding groove is provided on the top surface of the connecting plate, a limit plate is reciprocatingly provided inside the sliding groove, a sliding rod is fixedly provided on one side of the limit plate, a sliding groove is provided on the top surface of one side of the sliding rod, a sliding column is reciprocatingly provided inside the sliding groove, and a rotating wheel is fixedly provided on the bottom end of the sliding column.
[0008] Preferably, a sewing machine is fixedly provided on the top of the table top, and a second fixing column is slidably provided on the bottom end of one side of the sewing machine.
[0009] Preferably, a spring is sleeved on the outer wall of the second fixing column, and a pressure foot plate is fixedly provided on the bottom end of the spring.
[0010] Preferably, a steel needle is fixedly provided at the bottom end of the second fixing column.
[0011] Preferably, a motor is fixedly provided at the bottom end of the rotating wheel, and the output shaft of the motor passes through the supporting plate.
[0012] Preferably, there are two supporting bases.
[0013] Preferably, bolts are detachably provided on the outer wall surface of the bracket.
[0014] The working principle and beneficial effects of the utility model are:
[0015] In the utility model, during the use of the sewing machine on the table top at the top of the support column, the foot pedal is stepped on, and the foot pedal rotates on the rotating shaft on the support base. The foot pedal 3 rotates to drive the first fixed column to move, and the first fixed column drives the second connecting rod at the top of the first connecting rod to rotate. The second connecting rod rotates to drive the fixed rod to rotate. The fixed rod rotates to drive the internal torsion spring of the fixed rotating wheel to rotate, and the fixed rod penetrates the fixed plate, the fixed rotating wheel drives the bracket to rotate, and the other end of the bracket rotates inside the U-shaped groove. The bolt is used to fix the bracket, and the fixing block is used to fix it, so as to achieve the purpose of automatically lifting the presser foot of the sewing machine when using the foot pedal. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0017] Figure 1 This is a structural schematic diagram of an automatic presser foot lifting device of the utility model;
[0018] Figure 2 This is a schematic diagram of the explosion structure proposed by the utility model;
[0019] Figure 3 The utility model proposed Figure 1 A structural diagram of ;
[0020] Figure 4 The utility model proposed Figure 2 Schematic diagram of the B structure.
[0021] In the figure: 1. support base; 2. rotating shaft; 3. foot pedal; 4. first fixed column; 5. first connecting rod; 6. second connecting rod; 7. fixed rod; 8. fixed plate; 9. fixed rotating wheel; 10. bracket; 11. bolt; 12. U-shaped groove; 13. fixed block; 14. support column; 15. table top; 16. sewing machine; 17. second fixed column; 18. spring; 19. presser foot; 20. steel needle; 21. scissors; 22. connecting plate; 23. slide groove; 24. limit plate; 25. fixed groove; 26. sliding rod; 27. rotating wheel; 28. motor; 29. sliding groove; 30. slide column; 31. support plate. DETAILED DESCRIPTION
[0022] The following will be combined with 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 of 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.
[0023] Example 1
[0024] like Figure 1 to Figure 4 As shown, this embodiment proposes an automatic presser foot lifting device, including a support base 1, the support base 1 is used for supporting, a rotating shaft 2 is fixedly provided on one side of the support base 1, the rotating shaft 2 is used for rotating, the outer wall of the rotating shaft 2 is sleeved with a foot pedal 3, a first fixed column 4 is fixedly provided on one side of the outer wall of the foot pedal 3, a first connecting rod 5 is rotatably provided on the upper outer wall of the first fixed column 4, a second connecting rod 6 is rotatably provided on one side of the top end of the first connecting rod 5, a fixed rod 7 is fixedly provided on the outer wall of the second connecting rod 6, a fixed plate 8 is rotatably provided on one side of the fixed rod 7, a fixed rotating wheel 9 is fixedly provided on the outer wall of the fixed rotating wheel 9, a bracket 10 is rotatably provided on the outer wall of the fixed rotating wheel 9, a U-shaped groove 12 is rotatably provided on the lower part of the bracket 10, and a fixed block 13 is detachably provided on the bottom end of the U-shaped groove 12, and the fixed block 13 is used for limiting.
[0025] In this embodiment, a sewing machine 16 is fixedly provided on the top of the table top 15, and a second fixing column 17 is slidably provided on the bottom end of one side of the sewing machine 16. There are two supporting bases 1, which are used for support. The outer wall surface of the bracket 10 is detachably provided with bolts 11, which are used for fixing.
[0026] Example 2
[0027] like Figure 1 to Figure 4 As shown, based on the same concept as the above-mentioned embodiment 1, this embodiment also proposes that a support column 14 is fixedly provided at the top of the support base 1, a table top 15 is fixedly provided at the top of the support column 14, a support plate 31 is fixedly provided on the surface of one side of the top of the table top 15, a fixed groove 25 is fixedly provided at the top of the support plate 31, a connecting plate 22 is rotatably provided inside the fixing groove 25, a scissors 21 is fixedly provided on one side of the bottom end of the connecting plate 22, a slide groove 23 is provided on the top surface of the connecting plate 22, a limit plate 24 is reciprocatingly sliding inside the slide groove 23, a sliding rod 26 is fixedly provided on one side of the limit plate 24, a sliding groove 29 is provided on the top surface of one side of the sliding rod 26, a sliding column 30 slides inside the sliding groove 29, a sliding column 30 is reciprocatingly sliding inside the sliding groove 29, a rotating wheel 27 is fixedly provided at the bottom end of the sliding column 30, and the rotating wheel 27 drives the sliding column 30 to rotate.
[0028] In this embodiment, a motor 28 is fixedly provided at the bottom end of the rotating wheel 27, and the output shaft of the motor 28 passes through the support plate 31. The output end of the motor 28 drives the rotating wheel 27 to rotate. A spring 18 is sleeved on the outer wall of the second fixed column 17. A presser plate 19 is fixedly provided at the bottom end of the spring 18. A steel needle 20 is fixedly provided at the bottom end of the second fixed column 17. The steel needle 20 is used to align the clothes.
[0029] Working principle: When using the sewing machine 16 on the table top 15 at the top of the support column 14, step on the foot pedal 3, the foot pedal 3 rotates on the rotating shaft 2 on the support base 1, the rotation of the foot pedal 3 drives the first fixed column 4 to move, the first fixed column 4 drives the second connecting rod 6 at the top of the first connecting rod 5 to rotate, the second connecting rod 6 rotates to drive the fixed rod 7 to rotate, the fixed rod 7 rotates to drive the internal torsion spring of the fixed rotating wheel 9 to rotate, and the fixed rod 7 penetrates the fixed plate 8, the fixed rotating wheel 9 drives the bracket 10 to rotate, and the other end of the bracket 10 rotates inside the U-shaped groove 12, the bolt 11 is used to fix the bracket 10, and the fixing block 13 is used to fix The second fixed column 17 at the bottom of one side of the sewing machine 16 drives the steel needle 20 to sew the clothes, the presser foot 19 is used to move the seam, and the spring 18 is used to reduce shock. When the thread setting is completed, the motor 28 is started, and the output shaft of the motor 28 drives the rotating wheel 27 to rotate, and the rotating wheel 27 rotates to drive the sliding column 30 to rotate, and the sliding column 30 rotates to slide inside the sliding groove 29 to drive the sliding rod 26 to slide, and the sliding rod 26 slides to drive the limiting plate 24 to move inside the sliding groove 23, thereby driving the connecting plate 22 to rotate inside the fixed groove 25 on the support plate 31, and the connecting plate 22 rotates to drive the scissors 21 to move, thereby achieving the purpose of automatic thread cutting.
[0030] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. An automatic presser foot lifting device, comprising a support base (1), characterized in that: A rotating shaft (2) is fixedly provided on one side of the support base (1), a foot pedal (3) is sleeved on the outer wall of the rotating shaft (2), a first fixed column (4) is fixedly provided on one side of the outer wall of the foot pedal (3), a first connecting rod (5) is rotatably provided on the upper outer wall of the first fixed column (4), a second connecting rod (6) is rotatably provided on one side of the top end of the first connecting rod (5), a fixed rod (7) is fixedly provided on the outer wall of the second connecting rod (6), a fixed plate (8) is rotatably provided on one side of the fixed rod (7), a fixed rotating wheel (9) is fixedly provided on the outer wall of the fixed rotating wheel (9), a bracket (10) is rotatably provided on the outer wall of the fixed rotating wheel (9), a U-shaped groove (12) is rotatably provided on the lower part of the bracket (10), and a fixing block (13) is detachably provided at the bottom end of the U-shaped groove (12).
2. The automatic presser foot lifting device according to claim 1, characterized in that: A support column (14) is fixedly provided at the top of the support base (1), a table top (15) is fixedly provided at the top of the support column (14), a support plate (31) is fixedly provided on one side surface of the top of the table top (15), a fixed groove (25) is fixedly provided at the top of the support plate (31), a connecting plate (22) is rotatably provided inside the fixing groove (25), a scissors (21) is fixedly provided on one side of the bottom end of the connecting plate (22), a sliding groove (23) is provided on the top surface of the connecting plate (22), a reciprocatingly sliding limit plate (24) is provided inside the sliding groove (23), a sliding rod (26) is fixedly provided on one side of the limit plate (24), a sliding groove (29) is provided on the top surface of one side of the sliding rod (26), a sliding column (30) is reciprocatingly sliding inside the sliding groove (29), and a rotating wheel (27) is fixedly provided on the bottom end of the sliding column (30).
3. The automatic presser foot lifting device according to claim 2, characterized in that: A sewing machine (16) is fixedly provided at the top end of the table top (15), and a second fixing column (17) is slidably provided at the bottom end of one side of the sewing machine (16).
4. The automatic presser foot lifting device according to claim 3, characterized in that: The outer wall of the second fixed column (17) is sleeved with a spring (18), and the bottom end of the spring (18) is fixedly provided with a pressure foot plate (19).
5. The automatic presser foot lifting device according to claim 3, characterized in that: A steel needle (20) is fixedly provided at the bottom end of the second fixing column (17).
6. The automatic presser foot lifting device according to claim 2, characterized in that: A motor (28) is fixedly provided at the bottom end of the rotating wheel (27), and an output shaft of the motor (28) passes through the supporting plate (31).
7. The automatic presser foot lifting device according to claim 1, characterized in that: The number of the supporting bases (1) is two.
8. The automatic presser foot lifting device according to claim 1, characterized in that: The outer wall surface of the bracket (10) is detachably provided with bolts (11).