Synchronous belt presser foot combined feeding mechanism capable of being synchronously adjusted

Abstract

The utility model provides a synchronous belt presser foot combined feeding mechanism capable of being adjusted synchronously, which comprises a presser foot, a presser foot frame and a presser foot rod used for installing the presser foot frame, and further comprises a cloth dragging mechanism matched with the presser foot, the cloth dragging mechanism comprises a synchronous belt, an installing frame and a driving motor driving the synchronous belt to move, one end of the synchronous belt is arranged on the presser foot, and the other end of the synchronous belt is arranged on the installing frame. A tensioning wheel assembly used for tensioning the synchronous belt is arranged on the installation frame, the presser foot frame is arranged on the presser foot rod in a sliding mode, and a first adjusting structure used for adjusting the presser foot frame to slide on the presser foot rod is arranged between the presser foot frame and the presser foot rod. And a second adjusting structure capable of driving the synchronous belt to synchronously slide along with the presser foot is arranged between the tensioning wheel assembly and the mounting frame. The presser foot and the corresponding cloth dragging mechanism can slide synchronously, the position is adjusted, the presser foot is matched with feeding teeth, and various clothes process requirements are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine technical field especially a synchronous belt presser foot combination feeding mechanism of synchronous regulation. BACKGROUND

[0002] Traditional sewing equipment is equipped with a presser foot on the sewing machine head, the presser foot presses the cloth laid on the workbench, and the presser foot down pressure is used to cooperate with the feeding tooth to realize cloth feeding, this structure has certain friction between the upper layer of fabric and the bottom surface of the presser foot, and the length of the two or more layers of fabric is equal, the upper layer of fabric is longer than the lower layer of fabric after sewing, the phenomenon is called shift rate, the lower the shift rate index, the better the sewing performance, but the traditional structure cannot make the index lower, the existing synchronous belt presser foot combination feeding mechanism is equipped with a cloth dragging mechanism for feeding cloth cooperating with the presser foot and the feeding tooth, the cloth dragging mechanism includes a synchronous belt, the synchronous belt can be movably arranged on the presser foot, and the cloth at the lower end of the presser foot can be driven to move, but the presser foot and the cloth dragging mechanism in the prior art are usually two independent structures, the cloth dragging mechanism cannot be linked when the presser foot is lifted / descended, and the position is fixed and cannot be adjusted left and right, only a plurality of specifications of the presser foot can be replaced to realize the sewing process requirement of various stop opening seam position specifications. SUMMARY

[0003] In order to solve the problems of the prior art, the utility model provides a synchronous belt presser foot feeding mechanism, first, the feeding rhythm of the synchronous belt can be adjusted, the synchronous belt, the presser foot and the lower tooth are combined feeding, the shift rate index is lower, and the wrinkle is improved, the flatness is better, second, the synchronous belt and the presser foot can be synchronously realized left and right sliding, the process requirement of various stop opening seam position specifications of the garment process is met, the use cost is reduced, the presser foot replacement time is reduced, and the production efficiency is improved.

[0004] The technical scheme adopted is as follows:

[0005] A synchronous belt presser foot combination feeding mechanism capable of synchronous adjustment, comprising a presser foot, a presser foot frame, a presser foot rod for installing the presser foot frame, a cloth dragging mechanism cooperating with the presser foot, the cloth dragging mechanism comprising a synchronous belt, a mounting frame, a driving motor for driving the synchronous belt to move, one end of the synchronous belt being arranged on the presser foot, the mounting frame being provided with a tension pulley assembly for tensioning the synchronous belt, the presser foot frame being slidably arranged on the presser foot rod, the first adjusting structure for adjusting the sliding of the presser foot frame on the presser foot rod being arranged between the presser foot frame and the presser foot rod, and the second adjusting structure for driving the synchronous belt to slide synchronously with the presser foot being arranged between the tension pulley assembly and the mounting frame.

[0006] Further, the upper end of the presser foot frame is provided with a mounting plate mounting a first adjusting structure, the presser foot rod is provided with a slot through which the mounting plate passes, and the first adjusting structure comprises a sliding slot on the mounting plate and a bolt penetrating through the sliding slot and connecting the presser foot rod and the mounting plate.

[0007] Further, the mounting plate and the presser foot rod are provided with a first scale at the joint for accurate adjustment.

[0008] Further, the tensioning wheel assembly comprises an angle-adjustable tensioning wheel support on the mounting frame, a first tensioning wheel and a second tensioning wheel on the tensioning wheel support.

[0009] Further, the second adjusting structure is an adjusting rod between the mounting frame and the tensioning wheel support, and the adjusting rod and the mounting frame support are connected through a clamping ring.

[0010] Further, the adjusting rod is provided with a second scale for accurate adjustment.

[0011] Further, the presser foot comprises a first presser foot plate and a second presser foot plate rotatably connected to the two side plates of the presser foot frame, respectively, the first and second presser foot plates are rotatably connected to the presser foot frame through a first pin and a second pin, respectively, and the first and second presser foot plates are provided with an angle-adjustable third adjusting structure.

[0012] Further, the third adjusting structure comprises a spring arranged between the first and second presser foot plates and the presser foot frame, respectively, and the presser foot frame is provided with a plurality of grooves for suspending one end of the corresponding spring and adjusting the tightness of the spring.

[0013] Further, the driving motor is provided with a first synchronous pulley through which the synchronous belt can slide, and the first and second pins of the presser foot are respectively provided with a second synchronous pulley and a third synchronous pulley for mounting the synchronous belt.

[0014] Further, a connecting rod is arranged between the first tensioning wheel and the presser foot frame, and the first tensioning wheel is provided with a fixing bolt connecting the tensioning wheel support and the connecting rod, adjusting the angle of the tensioning wheel support and fixing.

[0015] Compared with the prior art, the present application has the following advantages:

[0016] The utility model provides a kind of synchronous belt presser foot combination feeding mechanism of synchronous adjustment, including presser foot, presser foot frame, presser foot rod, with the mop mechanism of presser foot cooperation, presser foot frame can be slid on presser foot rod, first adjusting structure is equipped between presser foot frame and presser foot rod, so that presser foot frame left and right sliding on presser foot rod.

[0017] Presser foot can also be raised and lowered with presser foot rod, mop mechanism is equipped with fixed bolt that the tension degree of synchronous belt can be adjusted, the rhythm of synchronous belt that mop is sent can be adjusted, synchronous belt, presser foot, lower tooth three combinations feeding, and the index of creep rate is lower, and wrinkle is improved, flatness is better. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is whole structure schematic view of the utility model;

[0019] Figure 2 、 3 , 7 is the structure schematic view of different angles of the utility model mop mechanism and presser foot cooperation;

[0020] Figure 4 、 5 , 6 is the structure schematic view of different angles of presser foot presser foot frame;

[0021] Figure 8 It is part structure schematic view of the utility model;

[0022] Figure 9 It is Figure 8 a enlarged view;

[0023] Among them, presser foot 1, first presser foot plate 101, second presser foot plate 102, presser foot frame 2, mop mechanism 3, synchronous belt 301, mounting bracket 302, driving motor 303, bearing 304, presser foot rod 4, first adjusting structure 5, sliding slot 501, bolt 502, mounting plate 6, slot 7, spring 8, first pin 901, second pin 902, groove 10, tension pulley assembly 11, tension pulley bracket 1101, first tension pulley 1102, second tension pulley 1103, first synchronous belt pulley 1201, second synchronous belt pulley 1202, third synchronous belt pulley 1203, casing 13, connecting rod 14, second adjusting structure 15, first scale 16, second scale 17, clamping ring 18, cover 19, protruding block 20, limiting structure 21, limiting block 2101, mounting block 22, adjusting screw 23, opening 24, adjusting groove 25, arc boss 26. DETAILED DESCRIPTION

[0024] The utility model will be further described below in combination with specific embodiments.

[0025] The "left and right" refers to the direction perpendicular to the feeding direction.

[0026] Reference Figures 1-9 A synchronous belt presser foot combined feeding mechanism capable of synchronous adjustment, comprising a presser foot 1, a presser foot frame 2, a presser foot rod 4 for mounting the presser foot frame 2, a mop mechanism 3 cooperating with the presser foot, the mop mechanism 3 comprising a synchronous belt 301, a mounting frame 302, a driving motor 303 for driving the synchronous belt 301, the mounting frame 302 being provided with a cover 19 outside the synchronous belt 301, and as a preferred embodiment, the cover 19 is provided with an opening 24 at the upper end, through which the synchronous belt 301 inside the cover 19 can be adjusted.

[0027] At least one bearing 304 is arranged between the mounting frame 302 and the driving motor 303, so that the motor driving the synchronous belt 301 will not affect the mounting frame 302. One end of the synchronous belt is arranged 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, and the first adjustment structure 5 is arranged between the presser foot frame 2 and the presser foot rod 4 for adjusting the sliding of the presser foot frame on the presser foot rod. The second adjustment structure 15 is arranged between the tensioning wheel assembly 11 and the mounting frame 302, which can drive the synchronous belt to slide left and right synchronously with the presser foot. The presser foot rod 4 and the mounting frame 302 are both arranged on the machine shell 13.

[0028] The mounting plate 6 for mounting the first adjustment structure is arranged at the upper end of the presser foot frame 2, and the presser foot rod 4 is provided with a slot 7 for the mounting plate to pass through. The first adjustment structure 5 comprises a sliding groove 501 arranged on the mounting plate 6 and a bolt 502 passing through the sliding groove 501 to connect the presser foot rod 4 and the mounting plate 6. When adjusting, the bolt 502 is loosened, and the mounting plate 6 slides in the slot 7 to adjust the position, and at the same time, the bolt 502 also slides in the sliding 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 can better cooperate with the feeding teeth to feed the cloth. After adjustment, the position of the presser foot frame 2 can be fixed by tightening the bolt 502.

[0029] As a preferred embodiment, the mounting plate 6 is provided with a first scale 16 at the position cooperating with the presser foot rod 4, which facilitates accurate adjustment. The position of the presser foot frame and the presser foot 1 can be accurately adjusted by taking the first scale 16 as a reference.

[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 adjusting structure 15 is an adjusting rod arranged between the mounting frame 302 and the tension pulley support 1101, and the adjusting rod is connected with the tension pulley support 1101 through the clamping ring 18. The adjusting rod can be directly fixedly connected with the tension pulley support 1101, and the position of the adjusting rod is adjusted to drive the tension pulley support 1101 and the synchronous belt to slide left and right. The clamping ring 18 needs to be loosened, and the adjusting rod is adjusted to the corresponding matching position after being clamped and positioned.

[0032] Preferably, the adjusting rod is provided with a second scale 17 for accurate adjustment. The position of the synchronous belt can be accurately adjusted with reference to the second scale, and the position of the presser foot is matched. The presser foot can move left and right, and the synchronous belt can be adjusted to the corresponding matching position according to the left and right positions of the presser foot through the adjusting rod.

[0033] The synchronous belt and the presser foot are synchronously adjusted to move left and right, which meets the process requirements of various stop point sewing specifications in garment process, reduces the use cost, reduces the time for replacing the presser foot, and improves the production efficiency. Meanwhile, the first and second adjusting structures are provided with scales for reference, and the adjusting structures can be accurately adjusted.

[0034] The first tension pulley 1102 is provided with a connecting rod 14 between the first tension pulley 1102 and the presser foot frame 2, the first tension pulley 1102 is provided with a fixed bolt 18 for connecting the tension pulley support 1101 and the connecting rod 14, adjusting the angle of the tension pulley support 1101, and fixing. The fixed bolt 18 is loosened, the angle of the tension pulley support 1101 is manually adjusted, the fixed bolt 18 is tightened after being adjusted, the tension of the synchronous belt 301 can be changed according to actual needs, and the synchronous belt can be better fed. When the presser foot is lifted, the mounting frame 302 swings away from the presser foot through the transmission of the connecting rod 14, and the synchronous belt is always in a taut state and cooperates with the presser foot. Similarly, when the presser foot is lowered, the mounting frame 302 swings towards the presser foot, and the synchronous belt is always in a taut state and cooperates with the presser foot. The angle of the tension pulley support can also be adjusted to adjust the tightness of the synchronous belt, so that the synchronous belt, the presser foot, and the lower teeth are better matched, the creep rate is lower, the wrinkles are 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 rotatably connected to the two side plates of the presser foot frame 2, respectively. The first and second presser foot plates are rotatably connected to the presser foot frame through a first pin 901 and a second pin 902, respectively. The first and second presser foot plates are provided with a third adjusting structure 19 for adjusting the angle. The third adjusting structure 19 comprises a spring 8 arranged between the first and second presser foot plates and the presser foot frame 2. The presser foot frame 2 is provided with a plurality of grooves 10 for suspending 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 fixedly installed and matched with the protrusion 20. The first and second presser foot plates are each provided with a protrusion, and the limiting structure 21 includes two limiting blocks 2101 matched with the two protrusions respectively. The limiting blocks 2101 are arranged to prevent the front end of the presser foot plate 1 from being excessively inclined downward under the pulling of the spring when the presser foot plate 1 is lifted, thereby affecting the pressing of the cloth. The limiting structure 21 is arranged on the mounting block 22 of the presser foot rod at the upper end of the presser foot, and the limiting structure 21 is slidably arranged on the mounting block 22. When the presser foot slides, the limiting structure 21 can adjust the position according to the sliding distance of the presser foot.

[0037] The first and second presser foot plates are each provided with a mounting hole matched with the first pin 901, and are each provided with an adjusting groove 25 matched with the second pin 902. The first and second presser foot plates can be rotated around the first pin 901 by adjusting the cooperation between the spring 8 and the different grooves 10, so as to adjust the angle at which the corresponding presser foot plate is lifted. The adjusting screw 23 can be arranged on the presser foot frame 2, and the presser foot 1 is driven to rotate by rotating the adjusting screw 23 to press the presser foot 1.

[0038] The driving motor 303 is provided with a first synchronous pulley 1201, and the first and second pins of the presser foot 1 are respectively provided with a second synchronous pulley 1202 and a third synchronous pulley 1203 for mounting the synchronous belt. One end of the synchronous belt 301 is arranged on the first synchronous pulley 1201, and the other end is arranged 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 are adjusted in angle, the synchronous pulleys are adjusted to the corresponding positions according to the positions of the presser feet, and cooperate with the presser feet to press and feed the cloth. Two synchronous pulleys are arranged 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, and more feeding teeth are contacted, so as to 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 tooth is lower than the needle plate plane, the second synchronous pulley 1202 presses the needle plate, so as to prevent the cloth from being pulled back by the thread on the upward needle.

[0039] As preferred, the lower end of the presser foot 1 is provided with an arc-shaped boss 26. When the lower feed tooth is lowered below the needle plate surface and the presser foot plate bottom plane, the arc-shaped boss 26 presses the sewing material downward to form a lower arc, which can elongate the sewing material to some extent, can make the sewing flatness more flat, and can provide a certain margin for the upward movement of the needle after the sewing is finished and the thread is cut, so as to prevent the fabric from being pulled back by the thread on the upward needle and prevent the fabric from being wrinkled.

[0040] The above is only optional embodiments of the present application, and does not limit the patent range of the present application, and any equivalent structural transformation made by the present application specification and drawings, or direct / indirect application in other related technical fields under the inventive concept of the present application are included in the patent protection range of the present application.

Claims

1. A synchronously adjustable timing belt presser foot combination 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-draping mechanism (3) cooperating with the presser foot, wherein the cloth-draping mechanism (3) comprises a timing belt (301), a mounting frame (302), and a drive motor (303) for driving the timing belt, wherein one end of the timing belt is disposed on the presser foot, and the mounting frame (302) is provided with a tensioning wheel assembly (11) for tensioning the timing belt, characterized in that: The presser foot frame (2) is slidably arranged on the presser foot rod (4), a first adjusting structure (5) for adjusting the sliding of the presser foot frame on the presser foot rod is arranged between the presser foot frame (2) and the presser foot rod (4), and a second adjusting structure (15) for enabling 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 combination feed mechanism of claim 1, wherein: The upper end of the presser foot frame (2) is provided with a mounting plate (6) for mounting the first adjusting structure, the presser foot rod (4) is provided with a slot (7) for the mounting plate (6) to pass through, and the first adjusting structure (5) comprises a sliding groove (501) arranged on the mounting plate (6) and a bolt (502) passing through the sliding groove (501) and connecting the presser foot rod (4) and the mounting plate (6).

3. The synchronously adjustable synchronous belt presser foot combination feed mechanism of claim 2, wherein: The mounting plate (6) is provided with a first scale (16) for accurate adjustment at the joint with the presser foot rod (4).

4. The synchronously adjustable synchronous belt presser foot combination feed mechanism of claim 1, wherein: The tensioning wheel assembly (11) comprises an angle-adjustable tensioning wheel support (1101) arranged on the mounting frame (302), a first tensioning wheel (1102) and a second tensioning wheel (1103) arranged on the tensioning wheel support (1101).

5. The synchronously adjustable synchronous belt presser foot combination feed mechanism of claim 4, wherein: The second adjusting structure (15) is an adjusting rod arranged between the mounting frame (302) and the tensioning wheel support (1101), and the adjusting rod and the mounting frame support (1101) are connected through a clamping ring (18).

6. The synchronously adjustable synchronous belt presser foot combination feed mechanism of claim 5, wherein: The adjusting rod is provided with a second scale (17) for accurate adjustment.

7. The synchronously adjustable synchronous belt presser foot combination feed mechanism of claim 1, wherein: The presser foot (1) comprises a first presser foot plate (101) and a second presser foot plate (102) rotatably connected to the two side plates of the presser foot frame (2), respectively, the first and second presser foot plates are rotatably connected to the presser foot frame through a first pin (901) and a second pin (902), respectively, and the first and second presser foot plates are each provided with an angle-adjustable third adjusting structure (4).

8. The synchronously adjustable synchronous belt presser foot combination feed mechanism of claim 7, wherein: The third adjusting structure (4) comprises a spring (8) arranged between the first and second presser foot plates and the presser foot frame (2), respectively, and the presser foot frame (2) is provided with a plurality of grooves (10) for suspending one end of the corresponding spring and adjusting the tightness of the spring.

9. The adjustable synchronous belt foot combination feed mechanism of claim 1, wherein: The driving motor (303) is provided with a first synchronous belt pulley (1201) for enabling the synchronous belt to slide, and the first and second pins of the presser foot (1) are respectively provided with a second synchronous belt pulley (1202) and a third synchronous belt pulley (1203) for mounting the synchronous belt.

10. The synchronously adjustable synchronous belt presser foot combination feed mechanism of claim 4, wherein: The first tensioning wheel (1102) is provided with a connecting rod (14) between the presser foot frame (2), a fixing bolt (18) for connecting the tensioning wheel support (1101) and the connecting rod, adjusting the angle of the tensioning wheel support, and fixing.

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