A synchronously adjustable synchronous belt presser foot combined feeding mechanism
By designing a synchronous adjustment combined feeding mechanism for synchronous belt presser foot, the problems of high latency, many wrinkles and poor flatness caused by the independent presser foot and mop mechanism in traditional sewing equipment are solved, and lower latency, better flatness and adaptability to a variety of process specifications are achieved, and production efficiency is improved.
Patent Information
- Application Number
- CN202510160814.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2025-04-04
AI Technical Summary
In traditional sewing equipment, the presser foot and the mop mechanism are usually independent structures, which cannot achieve synchronous adjustment and left and right slip, resulting in high latent movement rate, many wrinkles, poor flatness, and cannot meet the process needs of multiple stop joint specifications.
A synchronously adjustable synchronous belt presser foot combination feeding mechanism is designed, including an adjustable synchronous belt, presser foot and presser foot. The left and right sliding of the synchronous belt and presser foot is achieved through the first and second adjustment structures, and the tensioning degree of the synchronous belt is adjusted through the tensioning wheel assembly.
It achieves the feeding effect of lower latent movement rate, reduced wrinkle and better flatness, meets the process needs of various stop joint specifications, reduces the cost of use, reduces the time to replace presser feet, and improves production efficiency.
Smart Images
Figure CN119753953A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of sewing machines, in particular to a synchronously adjustable synchronous belt presser foot combined feeding mechanism. Background Art
[0002] Traditional sewing equipment is provided with a presser foot on the sewing machine head, and the presser foot presses the cloth spread on the work surface, and the cloth is fed by cooperating with the lower pressure of the presser foot and the feed dog. This structure has a certain friction between the upper fabric and the bottom surface of the presser foot. After sewing two or more layers of fabrics of equal length, the upper fabric is longer than the lower fabric. The professional term is called creep rate. The lower the creep rate index, the better the sewing performance, but the traditional structure cannot make this index lower. There is a synchronous belt presser foot combined feeding mechanism, and the presser foot is provided with a drag mechanism for feeding the cloth in cooperation with the presser foot and the feed dog. The drag mechanism includes a synchronous belt, which is movably arranged on the presser foot to drive the cloth under the lower end of the presser foot to move. However, the presser foot and the drag mechanism in the prior art are usually two independent structures. When the presser foot is lifted / lowered, the drag mechanism cannot be linked, and the position is fixed and cannot be adjusted left and right. The sewing process requirements of various stop seam position specifications can only be achieved by replacing presser feet of various specifications. Summary of the invention
[0003] In order to solve the problems of the prior art, the present invention provides an adjustable synchronous belt presser foot feeding mechanism, which, firstly, can adjust the feeding rhythm of the synchronous belt, and the synchronous belt, presser foot and lower teeth are combined for feeding, with a lower creep rate index, improved wrinkling and better flatness; secondly, the synchronous belt and the presser foot can be synchronously slid left and right, meeting the process requirements of various stop seam specifications of clothing craftsmanship, reducing the use cost, reducing the time for replacing the presser foot and improving production efficiency.
[0004] The technical solutions adopted are as follows:
[0005] A synchronously adjustable synchronous belt presser foot combined feeding mechanism comprises a presser foot, a presser foot frame, a presser foot rod for mounting the presser foot frame, and a cloth-dragging mechanism cooperating with the presser foot, wherein the cloth-dragging mechanism comprises a synchronous belt, a mounting frame, and a driving motor for driving the synchronous belt to move, wherein one end of the synchronous belt is arranged on the presser foot, and the mounting frame is provided with a tensioning wheel assembly for tensioning the synchronous belt, the presser foot frame is slidably arranged on the presser foot rod, a first adjusting structure for adjusting the presser foot frame to slide on the presser foot rod is provided between the presser foot frame and the presser foot rod, and a second adjusting structure for driving the synchronous belt to slide synchronously with the presser foot is provided between the tensioning wheel assembly and the mounting frame.
[0006] Furthermore, a mounting plate for mounting a first adjustment structure is provided at the upper end of the presser foot stand, a slot for the mounting plate to pass through is provided on the presser foot rod, and the first adjustment structure includes a slide groove provided on the mounting plate and a bolt passing through the slide groove to connect the presser foot rod and the mounting plate.
[0007] Furthermore, a first scale is provided at the joint between the mounting plate and the presser foot rod to facilitate precise adjustment.
[0008] Furthermore, the tension wheel assembly includes an angle-adjustable tension wheel bracket arranged on the mounting frame, a first tension wheel and a second tension wheel arranged on the tension wheel bracket.
[0009] Furthermore, the second adjustment structure is an adjustment rod provided between the mounting frame and the tensioning wheel bracket, and the adjustment rod and the mounting frame bracket are connected via a clamping ring.
[0010] Furthermore, the adjusting rod is provided with a second scale for facilitating precise adjustment.
[0011] Furthermore, the presser foot includes a first presser foot plate and a second presser foot plate which are respectively rotatably connected to the two side plates of the presser foot frame. The first and second presser feet are respectively rotatably connected to the presser foot frame through a first pin and a second pin. The first and second presser feet are both provided with a third adjustment structure with adjustable angles.
[0012] Furthermore, the third adjustment structure includes a spring respectively arranged between the first and second presser foot plates and the presser foot frame, and the presser foot frame is provided with a plurality of grooves for hanging one end of the corresponding spring and adjusting the tightness of the spring.
[0013] Furthermore, the driving motor is provided with a first synchronous pulley for the synchronous belt to slide, and the first and second pins provided on the presser foot are respectively provided with a second synchronous pulley and a third synchronous pulley for installing the synchronous belt.
[0014] Furthermore, a connecting rod is provided between the first tensioning wheel and the presser foot frame, and a fixing bolt is provided at the first tensioning wheel to connect the tensioning wheel bracket and the connecting rod and to adjust the angle of the tensioning wheel bracket and fix it.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] The present invention provides a synchronously adjustable synchronous belt presser foot combined feeding mechanism, comprising a presser foot, a presser foot stand, a presser foot rod, and a mopping mechanism matched with the presser foot, wherein the presser foot stand can be slidably arranged on the presser foot rod, and a first adjustment structure is arranged between the presser foot stand and the presser foot rod, so that the presser foot stand can slide left and right on the presser foot rod. The mopping mechanism can slide left and right synchronously with the presser foot, and a second adjustment mechanism is arranged on the mopping mechanism. The synchronous belt and the presser foot can slide left and right synchronously, which meets the process requirements of various stop seam specifications of clothing processes, reduces the use cost, reduces the time for replacing the presser foot, and improves production efficiency. At the same time, scales for reference are arranged on the first and second adjustment structures, which can be accurately adjusted.
[0017] The presser foot can also be raised and lowered with the presser foot rod. The mopping mechanism is provided with a fixing bolt which can adjust the tension of the synchronous belt and the feeding rhythm of the synchronous belt. The synchronous belt, presser foot and lower teeth are combined for feeding, with a lower creep rate index, improved wrinkling and better flatness. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;
[0019] Figure 2 , 3 7 is a schematic diagram of the structure of the mopping mechanism and the presser foot in different angles of the present invention;
[0020] Figure 4 , 5 6 is a schematic diagram of the structure of the presser foot and presser foot stand at different angles;
[0021] Figure 8 It is a partial structural schematic diagram of the present invention;
[0022] Fig. 9 for Figure 8 Enlarged view of point a;
[0023] Among them, the presser foot 1, the first presser foot plate 101, the second presser foot plate 102, the presser foot frame 2, the mopping mechanism 3, the synchronous belt 301, the mounting frame 302, the drive motor 303, the bearing 304, the presser foot rod 4, the first adjustment structure 5, the slide groove 501, the bolt 502, the mounting plate 6, the slot 7, the spring 8, the first pin 901, the second pin 902, the groove 10, the tension wheel assembly 11, the tension wheel bracket 1101, the first tension wheel 1102, second tensioning wheel 1103, first synchronous pulley 1201, second synchronous pulley 1202, third synchronous pulley 1203, casing 13, connecting rod 14, second adjustment structure 15, first scale 16, second scale 17, clamping ring 18, cover 19, protrusion 20, limiting structure 21, limiting block 2101, mounting block 22, adjusting screw 23, opening 24, adjusting groove 25, arc-shaped boss 26. DETAILED DESCRIPTION
[0024] The present invention is further described below in conjunction with specific embodiments.
[0025] The "left and right" mentioned here refers to the direction perpendicular to the feeding direction.
[0026] refer to Figure 1-9A synchronously adjustable synchronous belt presser foot combined feeding mechanism includes a presser foot 1, a presser foot frame 2, a presser foot rod 4 for installing the presser foot frame 2, and a mopping mechanism 3 cooperating with the presser foot. The mopping mechanism 3 includes a synchronous belt 301, a mounting frame 302, and a driving motor 303 for driving the synchronous belt to move. The mounting frame 302 is located outside the synchronous belt 301 and is provided with a cover 19. Preferably, an opening 24 is provided at the upper end of the cover 19, and the synchronous belt 301 inside the cover 19 is easily adjusted through the opening.
[0027] At least one bearing 304 is provided between the mounting frame 302 and the driving motor 303. When the motor drives the synchronous belt 301, the mounting frame 302 will not be affected. One end of the synchronous belt is provided on the presser foot 1, and the mounting frame 302 is provided with a tensioning wheel assembly 11 for tensioning the synchronous belt. The presser foot frame 2 can slide left and right on the presser foot rod 4. A first adjustment structure 5 for adjusting the presser foot frame to slide on the presser foot rod is provided between the presser foot frame 2 and the presser foot rod 4. A second adjustment structure 15 that can drive the synchronous belt to slide left and right synchronously with the presser foot is provided between the tensioning wheel assembly 11 and the mounting frame 302. The presser foot rod 4 and the mounting frame 302 are both provided on the housing 13.
[0028] The upper end of the presser foot stand 2 is provided with a mounting plate 6 for mounting the first adjustment structure, the presser foot rod 4 is provided with a slot 7 for the mounting plate to pass through, and the first adjustment structure 5 includes a slide groove 501 provided on the mounting plate 6, and a bolt 502 passing through the slide groove 501 to connect the presser foot rod 4 and the mounting plate 6. When adjusting, the bolt 502 is loosened to make the mounting plate 6 slide in the slot 7 to adjust the position, and the bolt 502 also slides in the slide groove 501. According to actual needs, the position of the presser foot 1 can be adjusted by sliding left and right, so that the presser foot 1 and the feed dog can better cooperate to feed the cloth. After adjustment, the position of the presser foot stand 2 can be fixed by tightening the bolt 502.
[0029] As a preferred embodiment, the first scale 16 for facilitating accurate adjustment is provided at the matching position between the mounting plate 6 and the presser foot rod 4. With the first scale 16 as a reference, the position of the presser foot stand and the presser foot 1 can be accurately adjusted.
[0030] The tensioning wheel assembly 11 comprises an angle-adjustable tensioning wheel bracket 1101 arranged on the mounting frame 302 , a first tensioning wheel 1102 and a second tensioning wheel 1103 arranged on the tensioning wheel bracket 1101 .
[0031] The second adjustment structure 15 is an adjustment rod provided between the mounting frame 302 and the tension wheel bracket 1101, and the adjustment rod and the tension wheel bracket 1101 are connected via a clamping ring 18. The adjustment rod can be directly fixedly connected to the tension wheel bracket 1101, and the tension wheel bracket 1101 and the synchronous belt can be driven to slide left and right by adjusting the position of the adjustment rod. The clamping ring 18 needs to be loosened, and then clamped and positioned after adjustment.
[0032] Preferably, the adjusting rod is provided with a second scale 17 for accurate adjustment. With the second scale as a reference, the position of the synchronous belt can be accurately adjusted to match the position of the presser foot. The presser foot can move left and right, and the synchronous belt can be adjusted to a corresponding matching position according to the left and right position of the presser foot through the adjusting rod.
[0033] The synchronous belt and presser foot can slide left and right synchronously, which meets the process requirements of various stop seam specifications of clothing crafts, reduces the use cost, reduces the time of changing presser foot and improves production efficiency. At the same time, there are scales for reference on the first and second adjustment structures, which can be adjusted accurately.
[0034] A connecting rod 14 is provided between the first tensioning wheel 1102 and the presser foot frame 2, and a fixing bolt 18 is provided at the first tensioning wheel 1102, which connects the tensioning wheel bracket 1101 and the connecting rod 14, and can adjust the angle of the tensioning wheel bracket 1101 and fix it. Loosen the fixing bolt 18, manually adjust the angle of the tensioning wheel bracket 1101, and after adjustment, tighten the fixing bolt 18 to fix it. The tension of the synchronous belt 301 can be changed according to actual needs, so that the synchronous belt can be better fed. When the presser foot is lifted, the mounting frame 302 will swing away from the presser foot through the transmission of the connecting rod 14, and the synchronous belt is always in a tight state and cooperates with the presser foot. Similarly, when the presser foot is lowered, the mounting frame 302 swings toward the presser foot, and the synchronous belt is always in a tight state and cooperates with the presser foot. The tightness of the synchronous belt can also be adjusted by adjusting the angle of the tensioning wheel bracket, so that the synchronous belt, the presser foot, and the lower teeth can be better matched, the creep rate index is lower, the wrinkling is improved, and the flatness is better.
[0035] The presser foot 1 comprises a first presser foot plate 101 and a second presser foot plate 102 which are respectively rotatably connected to the two side plates of the presser foot frame 2, and the first and second presser foot plates are respectively rotatably connected to the presser foot frame through a first pin 901 and a second pin 902, and the first and second presser foot plates are both provided with a third adjustment structure 19 with adjustable angles. The third adjustment structure 19 comprises a spring 8 respectively provided between the first and second presser foot plates and the presser foot frame 2, and the presser foot frame 2 is provided with a plurality of grooves 10 for hanging one end of the corresponding spring and adjusting the tightness of the spring.
[0036] The presser foot 1 is provided with a protrusion 20 extending upward, and the upper end of the presser foot plate is provided with a limiting structure 21 which cooperates with the protrusion 20 and is fixedly installed. The first and second presser foot plates are each provided with a protrusion, and the limiting structure 21 includes two limiting blocks 2101 which cooperate with the two protrusions respectively. The limiting blocks 2101 are provided to prevent the front end of the cloth plug from tilting too much downward under the pull of the spring when the presser foot plate 1 is lifted, thereby affecting the cloth plugging. The limiting structure 21 is provided on a mounting block 22 where the presser foot rod is located at the upper end of the presser foot, and the limiting structure 21 can be slidably provided on the mounting block 22. When the presser foot slides, the limiting structure 21 can adjust its position according to the sliding distance of the presser foot.
[0037] The first and second presser feet are both provided with mounting holes that match the first pin 901, and the first and second presser feet are both provided with adjustment grooves 25 that match the second pin 902. The first presser foot or the second presser foot can be rotated around the first pin 901 by adjusting the spring 8 to match with different grooves 10, so as to adjust the lifting angle of the corresponding presser foot. An adjustment screw 23 can be set on the presser foot frame 2, and the adjustment screw 23 is rotated to push against the presser foot 1 to drive the presser foot 1 to rotate. The first and second presser feet can be adjusted separately, and the appropriate angles can be adjusted according to the thickness of the fabric to match the fabric, so as to fit the fabric with different thickness and craftsmanship, and the fabric is not easy to wrinkle when sewing. While adjusting the presser foot, the tension of the synchronous belt can also be changed to make the presser foot and the synchronous belt fit better.
[0038] The driving motor 303 is provided with a first synchronous pulley 1201, and the first and second pins provided on the presser foot 1 are respectively provided with a second synchronous pulley 1202 and a third synchronous pulley 1203 for installing the synchronous belt. One end of the synchronous belt 301 is provided on the first synchronous pulley 1201, and the other end is provided on the second and third synchronous pulleys. The width of the first synchronous pulley 1201 is wide enough for the synchronous belt to slide. When the first and second presser foot plates adjust the angle, the synchronous pulley will adjust to the corresponding position according to the position of the presser foot, and cooperate with the presser foot to press and feed the cloth. Two synchronous pulleys are provided on the presser foot, and a double-wheel mechanism is adopted. The first and second synchronous pulleys cooperate with the synchronous belt to increase the contact area of the cloth pressing, contact with more feeding pressing teeth, and reduce the pressure of the unit tooth on the cloth. Even if the feeding force is stronger, the tooth marks on the cloth are shallower. When the feeding teeth are lower than the needle plate plane, the second synchronous pulley 1202 presses the needle plate to prevent the cloth from being pulled back by the suture on the upward needle.
[0039] Preferably, the lower end of the presser foot 1 is provided with an arc-shaped boss 26. When the lower feed tooth drops below the needle plate surface and the bottom plane of the presser foot, the arc-shaped boss 26 presses the sewing material downward to form a lower arc, which can stretch the sewing material to a certain extent, make the sewing flatter, and provide a certain margin after the needle moves upward and the thread is trimmed at the end of sewing, so as to prevent the cloth from being pulled back by the thread on the upward needle and prevent the cloth from shrinking.
[0040] The above descriptions are only optional embodiments of the present invention, and are not intended to limit the patent scope of the present invention. All equivalent structural changes made using the contents of the present invention's specification and drawings, or directly / indirectly applied in other related technical fields, are included in the patent protection scope of the present invention.
Claims
1. A synchronously adjustable synchronous belt presser foot combined feeding mechanism, comprising a presser foot (1), a presser foot frame (2), a presser foot rod (4) for mounting the presser foot frame (2), and a cloth-pulling mechanism (3) cooperating with the presser foot, wherein the cloth-pulling mechanism (3) comprises a synchronous belt (301), a mounting frame (302), and a driving motor (303) for driving the synchronous belt to move, wherein one end of the synchronous belt is arranged on the presser foot, and the mounting frame (302) is provided with a tensioning wheel assembly (11) for tensioning the synchronous belt, wherein: The presser foot stand (2) can be slidably arranged on the presser foot rod (4), a first adjustment structure (5) for adjusting the presser foot stand to slide on the presser foot rod is arranged between the presser foot stand (2) and the presser foot rod (4), and a second adjustment structure (15) for driving the synchronous belt to slide synchronously with the presser foot is arranged between the tensioning wheel assembly (11) and the mounting frame (302).
2. The synchronously adjustable synchronous belt presser foot combined feeding mechanism according to claim 1, characterized in that: The upper end of the presser foot frame (2) is provided with a mounting plate (6) for mounting a first adjustment structure, the presser foot rod (4) is provided with a slot (7) for the mounting plate to pass through, and the first adjustment structure (5) comprises a slide groove (501) provided on the mounting plate (6), and a bolt (502) passing through the slide groove (501) to connect the presser foot rod (4) and the mounting plate (6).
3. The synchronously adjustable synchronous belt presser foot combined feeding mechanism according to claim 2, characterized in that: The matching position of the mounting plate (6) and the presser foot rod (4) is provided with a first scale (16) for facilitating precise adjustment.
4. The synchronously adjustable synchronous belt presser foot combined feeding mechanism according to claim 1, characterized in that: The tension wheel assembly (11) comprises a tension wheel bracket (1101) with an adjustable angle arranged on a mounting frame (302), a first tension wheel (1102) and a second tension wheel (1103) arranged on the tension wheel bracket (1101).
5. The synchronously adjustable synchronous belt presser foot combined feeding mechanism according to claim 4, characterized in that: The second adjustment structure (15) is an adjustment rod provided between the mounting frame (302) and the tension wheel bracket (1101), and the adjustment rod and the mounting frame bracket (1101) are connected via a clamping ring (18).
6. The synchronously adjustable synchronous belt presser foot combined feeding mechanism according to claim 5, characterized in that: The adjusting rod is provided with a second scale (17) for facilitating precise adjustment.
7. The synchronously adjustable synchronous belt presser foot combined feeding mechanism according to claim 1, characterized in that: The presser foot (1) comprises a first presser foot plate (101) and a second presser foot plate (102) which are respectively rotatably connected to two side plates of a presser foot frame (2); the first and second presser foot plates are respectively rotatably connected to the presser foot frame via a first pin (901) and a second pin (902); and the first and second presser foot plates are both provided with a third adjustment structure (4) with adjustable angles.
8. The synchronously adjustable synchronous belt presser foot combined feeding mechanism according to claim 7, characterized in that: The third adjustment structure (4) comprises a spring (8) respectively arranged between the first and second presser foot plates and the presser foot frame (2), and the presser foot frame (2) is provided with a plurality of grooves (10) for hanging one end of the corresponding spring and adjusting the tightness of the spring.
9. The synchronously adjustable synchronous belt presser foot combined feeding mechanism according to claim 1, characterized in that: The driving motor (303) is provided with a first synchronous pulley (1201) for the synchronous belt to slide, and the presser foot (1) is provided with a second synchronous pulley (1202) and a third synchronous pulley (1203) for installing the synchronous belt in addition to the first and second pins.
10. The synchronously adjustable synchronous belt presser foot combined feeding mechanism according to claim 4, characterized in that: A connecting rod (14) is provided between the first tensioning wheel (1102) and the presser foot frame (2), and a fixing bolt (18) is provided at the first tensioning wheel (1102) for connecting the tensioning wheel bracket (1101) and the connecting rod and for adjusting the angle of the tensioning wheel bracket and fixing it.