Lifting and pressing device of cloth dragging wheel

Abstract

The technical scheme belongs to the technical field of cloth dragging wheels, and particularly relates to a lifting and pressing device of a cloth dragging wheel. The output end of the cloth dragging wheel motor is provided with a driving dragging wheel; the towing wheel belt is arranged outside the driving towing wheel in a sleeving manner; the lifting and pressing mechanism is arranged on the mounting frame, a driven tug of the lifting and pressing mechanism is sleeved with the tug belt, and the lifting and pressing mechanism is used for lifting the driven tug to enable the tug belt to be separated from the cloth; wherein the lifting and pressing mechanism comprises a lifting and pressing motor, and an eccentric cam is arranged at the output end of the lifting and pressing motor; the middle part of the hinge arm is hinged to the mounting frame; the driven dragging wheel is rotationally arranged at the lower end of the hinge arm; the lifting and pressing spring is used for enabling the lower end of the hinge arm to always have a trend of moving towards the cloth; the eccentric cam movably abuts against the abutting portion of the hinge arm, and when the eccentric cam pushes the abutting portion, the hinge arm rotates to enable the driven dragging wheel to tilt upwards to be separated from the cloth. The distance from the abutting portion to the middle of the hinge arm is larger than that from the middle of the hinge arm to the lower end of the hinge arm.

Description

Technical Field

[0001] The technical solution relates to the technical field of mop wheels, and in particular to a lifting and pressing device for a mop wheel. Background Art

[0002] A sewing machine is a machine that sews materials together with thread, including a needle bar mechanism, a thread picking mechanism, a feeding mechanism, a thread hooking mechanism, a clamping mechanism, a winding device and a lubrication device. According to the structure or sewing process, sewing machines can be divided into flat-bed sewing machines, chain stitch machines, overlock machines, buttonhole machines and bagging machines. In order to achieve rapid feeding of the sewing machine, in addition to using the feed teeth and presser foot to feed the materials, a mopping wheel device is often installed on the sewing machine to transport the sewn materials.

[0003] Chinese patent CN214782504U discloses a mop wheel structure, which has many parts, a complex structure, and a slow response. The present application hopes to innovate a mop wheel device with a simple structure and strong functionality. Summary of the invention

[0004] The purpose of this technical solution is to provide a lifting and pressing device for a mop wheel, which controls the articulated arm to lift the driven tug wheel through a lifting and pressing motor, thereby solving the problem that the original mop wheel device is laborious to lift and the situation that the original mop wheel needs an air source as power.

[0005] The purpose of this technical solution is achieved in this way:

[0006] A lifting and pressing device for a mop wheel, comprising: a mounting frame having a plurality of mounting positions thereon; a mop wheel motor, which is arranged on the mounting frame, and an active tug wheel is arranged at the output end of the mop wheel motor; a tug wheel belt, which is sleeved outside the active tug wheel; and a lifting and pressing mechanism, which is arranged on the mounting frame, and the tug wheel belt is sleeved on a driven tug wheel of the lifting and pressing mechanism, and the lifting and pressing mechanism is used to lift the driven tug wheel to separate the tug wheel belt from the cloth; wherein the lifting and pressing mechanism comprises: a lifting and pressing motor, an eccentric cam is arranged at the output end of the lifting and pressing motor; an articulated arm, the middle of which is hinged on the The driven tug wheel is rotatably arranged at the lower end of the articulated arm, and the tug wheel belt sleeve is arranged outside the driven tug wheel; and the lifting and pressing spring, the upper end of which is arranged on the mounting frame, and the lower end is connected to the mounting arm arranged on the articulated arm, so that the lower end of the articulated arm always has a tendency to move toward the cloth; wherein the eccentric cam movably abuts against the abutment part of the articulated arm, and when the eccentric cam pushes the abutment part, the articulated arm rotates to make the driven tug wheel tilt upward and break away from the cloth; the distance from the abutment part to the middle part of the articulated arm is greater than the distance from the middle part of the articulated arm to the lower end of the articulated arm.

[0007] Preferably, a push rod is provided on the eccentric cam, a hinge block is hingedly provided on the mounting frame, and the push rod and the hinge block are movably connected; the front end of the push rod movably abuts against the abutment portion of the intersection arm.

[0008] Preferably, the lifting and pressing mechanism further comprises a distance adjusting member, and the distance adjusting member is threadedly arranged on the mounting frame; and the upper end of the lifting and pressing spring is arranged at the lower end of the distance adjusting member.

[0009] Preferably, the lifting and pressing device also includes a tensioning mechanism, which contains: a tensioning shaft, which is arranged on the mounting frame; a tensioning arm, whose front end is hinged on the tensioning shaft; a tensioning wheel, which is arranged at the front end of the tensioning arm and movably abuts against the outer side of the tugboat belt; and a tensioning torsion spring, which is arranged on the tensioning shaft so that the tensioning wheel always has a tendency to move toward the tugboat belt.

[0010] Preferably, the rear end of the tensioning arm has a protrusion, and the articulated arm is provided with a toggle member, and the protrusion is located on the movement trajectory of the toggle member; when the articulated arm drives the driven tug wheel to lift, the toggle member moves toward the protrusion to drive the tensioning arm to rotate to achieve the lifting of the tensioning wheel.

[0011] Preferably, a threaded pin is provided on the protrusion, and the position of the threaded pin on the protrusion is adjusted so that the toggle member can drive the tensioning arm to rotate in advance.

[0012] Preferably, the articulated arm is arranged on the mounting frame via an articulated shaft, a positioning wheel is arranged on the articulated shaft, and the positioning wheel rotates to abut against the inner side of the tug belt.

[0013] Preferably, a retaining spring is provided on the hinge shaft, and the retaining spring is used to fix the hinge arm on the hinge shaft.

[0014] Preferably, the lifting and pressing mechanism further comprises a baffle, one end of which is arranged on the hinge shaft, and the other end is connected to the hinge arm via a fixing pin; the baffle is used to shield the driven tugwheel, the positioning wheel and part of the tugwheel belt.

[0015] Compared with the prior art, the technical solution has the following outstanding and beneficial technical effects:

[0016] 1. The eccentric cam designed in this technical solution can lift the rear end of the articulated arm by pushing the upper end thereof. At the same time, the distance from the upper end to the middle of the articulated arm is greater than the distance from the middle to the lower end. Therefore, the articulated arm can lift the driven tugwheel with less effort, so that a relatively small-power lifting and pressing motor can complete the work.

[0017] 2. The tensioning device designed in this technical solution can adjust the tightness of the tugboat belt, and when the articulated arm lifts the driven tugboat, the tensioning arm can be pressed down at the same time to make the tensioning wheel away from the tugboat belt, so as to prevent the tugboat belt from being pulled in and broken when the driven tugboat is lifted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the structural diagrams of this technical solution.

[0019] Figure 2 This is the second structural diagram of this technical solution.

[0020] Figure 3 It is a structural schematic diagram of the lifting and pressing mechanism.

[0021] Figure 4 This is one of the structural diagrams of the lifting and pressing mechanism and the tensioning mechanism.

[0022] Figure 5 This is the second structural diagram of the lifting and pressing mechanism and the tensioning mechanism.

[0023] 1. Mounting frame; 2. Cloth-mopping wheel motor; 3. Active tug; 4. Tug belt; 5. Lifting and pressing mechanism; 6. Lifting and pressing motor; 7. Eccentric cam; 8. Articulated arm; 81. Abutment portion; 9. Driven tug; 10. Push rod; 11. Articulated block; 12. Lifting and pressing spring; 13. Mounting arm; 14. Adjusting member; 15. Tensioning mechanism; 16. Tensioning shaft; 17. Tensioning arm; 18. Tensioning wheel; 19. Tensioning torsion spring; 20. Bump; 21. Toggle member; 22. Threaded pin; 23. Articulated shaft; 24. Positioning wheel; 25. Retaining spring; 26. Baffle; 27. Fixing pin. DETAILED DESCRIPTION

[0024] The specific implementation of the technical solution is further described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 and Figure 2 As shown, a lifting and pressing device of a mop wheel comprises a mounting frame 1, a mop wheel motor 2, a tug wheel belt 4 and a lifting and pressing mechanism 5. The mop wheel motor 2 is arranged on the mounting frame 1, and its output end passes through the mounting frame 1, and an active tug wheel 3 is arranged on its output end. When the mop wheel motor 2 is working, it drives the active tug wheel 3 to rotate, and the tug wheel belt 4 is sleeved outside the active tug wheel 3 and the driven tug wheel 9 of the lifting and pressing mechanism 5. The lifting and pressing mechanism 5 is arranged on the mounting frame 1 and is located below the same side of the mop wheel motor 2. The lifting and pressing mechanism 5 can lift the driven tug wheel 9 to make the tug wheel belt 4 separate from the cloth.

[0026] Specifically, Figure 2 and Figure 3As shown, the lifting and pressing mechanism 5 includes a lifting and pressing motor 6, an articulated arm 8 and a driven tug wheel 9. The lifting and pressing motor 6 is arranged below the cloth-dragging wheel motor 2, and an eccentric cam 7 is arranged at its output end, and the end point of the eccentric cam 7 can make reciprocating motion; the articulated arm 8 is an approximately "L"-shaped swing arm, the middle part of which is hinged on the mounting frame 1, and the hinge point is located below the lifting and pressing motor 6, so pushing the upper end of the articulated arm 8 can drive its lower end to move, and the eccentric cam 7 is used to push the upper end of the articulated arm 8 to move; the driven tug wheel 9 is rotatably arranged at the lower end of the articulated arm 8, and the tug wheel belt 4 is sleeved outside the driven tug wheel 9. The position where the tug wheel belt 4 is sleeved on the driven tug wheel 9 is a position abutting against the cloth, so the driven tug wheel 9 can be lifted up by controlling the articulated arm 8 so that the tug wheel belt 4 is separated from the cloth.

[0027] Furthermore, the upper end of the articulated arm 8 has an abutment portion 81, and the distance from the abutment portion 81 to the middle of the articulated arm 8 is greater than the distance from the middle of the articulated arm 8 to the lower end of the articulated arm 8. Therefore, when the eccentric cam 7 drives the articulated arm 8 to work, the articulated arm 8 is a labor-saving lever, so the driven tug wheel 9 can be lifted more easily, and the position of the driven tug wheel 9 can be adjusted by the shape of the articulated arm 8 to change the distance between the lifting and pressing device and the cloth.

[0028] like Figure 3 As shown, the eccentric cam 7 pushes the articulated arm 8 to move through the push rod 10, and the articulated block 11 is used to limit the movement path of the push rod 10 to ensure that it does not deviate excessively. The lower end of the articulated block 11 is hinged on the mounting frame 1, and the upper end is movably connected to the push rod 10 with a push rod 10, and the rear end of the push rod 10 movably abuts against the upper end of the articulated arm 8; the middle part of the push rod 10 is set on the mounting frame 1 through the articulated block 11.

[0029] like Figure 3 As shown, the lifting and pressing mechanism 5 also includes a lifting and pressing spring 12, the upper end of which is fixedly connected to the mounting frame 1, and the lower end is connected to the mounting arm 13 extending outward from the middle part of the articulated arm 8 through a hook. The lifting and pressing spring 12 is used to ensure that the upper end of the articulated arm 8 always has a tendency to move toward the eccentric cam 7.

[0030] Furthermore, the lifting and pressing mechanism 5 also includes a distance adjusting member 14, and the distance adjusting member 14 and the lifting and pressing spring 12 cooperate with each other to adjust the tensioning force of the lifting and pressing spring 12. The distance adjusting member 14 is threadedly arranged on the mounting frame 1, and the upper end of the lifting and pressing spring 12 is arranged at the lower end of the distance adjusting member 14. The control force of the articulated arm 8 can be adjusted by adjusting the distance between the distance adjusting member 14 and the mounting arm 13.

[0031] like Figure 1 and Figure 2As shown, the articulated arm 8 is arranged on the mounting frame 1 through the articulated shaft 23, and the articulated shaft 23 is provided with a positioning wheel 24 on the other side of the mounting frame 1. The positioning wheel 24 rotates to abut the inner side of the tug belt 4 to assist the transmission of the tug belt 4. A retaining spring 25 for fixing the articulated arm 8 is arranged on the rear end of the articulated shaft 23. The lifting and pressing mechanism 5 also includes a baffle 26, one end of the baffle 26 is arranged on the articulated shaft 23, and the other end is connected to the articulated arm 8 through a fixing pin 27. The baffle 26 is used to shield the driven tug 9, the positioning wheel 24 and part of the tug belt 4 to prevent external pollutants from entering the lifting and pressing mechanism 5.

[0032] like Figure 4 and Figure 5 As shown, the lifting and pressing device also includes a tensioning mechanism 15, which is used to adjust the tightness of the tugboat belt 4, and contains a tensioning shaft 16, a tensioning arm 17, a tensioning wheel 18 and a tensioning torsion spring 19. The tensioning shaft 16 is rotatably arranged on the mounting frame 1; the front end of the tensioning arm 17 is hinged on the tensioning shaft 16, and the rear end is located on the outside of the tugboat belt 4; the tensioning wheel 18 is arranged at the front end of the tensioning arm 17, and movably abuts against the outside of the tugboat belt 4; the tensioning torsion spring 19 is arranged on the tensioning shaft 16, and its two ends are respectively fixedly connected with the tensioning shaft 16 and the mounting frame 1, so that the tensioning arm 17 always has a tendency to swing through its own torque, and its swinging direction is the direction that can make the tensioning wheel 18 close to the tugboat belt 4.

[0033] Furthermore, the tugboat belt 4 will be stretched. In order to protect the tugboat belt 4 from breaking, a protrusion 20 is provided at the rear end of the tensioning arm 17, and a toggle member 21 is provided on the articulated arm 8. The protrusion 20 is located on the movement trajectory of the toggle member 21. When the articulated arm 8 drives the driven tugboat 9 to lift, the toggle member 21 moves toward the protrusion 20 and abuts against the protrusion 20, and then toggle the protrusion 20, so that the tensioning arm 17 rotates to realize the lifting of the tensioning wheel 18, thereby disengaging from the tugboat belt 4. When the articulated arm 8 is reset, the tensioning arm 17 is driven to reset through the tensioning torsion spring 19.

[0034] Furthermore, a threaded pin 22 is provided on the protrusion 20, and the threaded pin 22 is placed between the protrusion 20 and the toggle member 21, so that the position of the threaded pin 22 on the protrusion 20 can be adjusted to enable the toggle member 21 to drive the tensioning arm 17 to rotate in advance.

[0035] It should be noted that the structures, proportions, sizes, etc. drawn in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the utility model, so they have no substantial technical significance. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects and purposes that can be achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description, and are not used to limit the scope of the implementation of the utility model. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the utility model without substantial change of the technical content.

[0036] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element at the same time. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or may be indirectly connected to the other element through an intermediate element.

[0037] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0038] The above shows and describes the basic principle and main features of the technical solution and the advantages of the technical solution. The technicians in this industry should understand that the technical solution is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, the technical solution will have various changes and improvements, which fall within the scope of the technical solution to be protected. The scope of protection claimed by the technical solution is defined by the attached claims and their equivalents.

Claims

1. A lifting and pressing device for a mop wheel, characterized in that: include: A mounting frame (1) having a plurality of mounting positions; A mopping wheel motor (2) is arranged on the mounting frame (1), and an active tug wheel (3) is arranged at the output end of the mopping wheel motor (2); a tugboat belt (4) which is sleeved outside the active tugboat (3); and A lifting and pressing mechanism (5) is arranged on the mounting frame (1), and the tug belt (4) is sleeved on a driven tug wheel (9) of the lifting and pressing mechanism (5), and the lifting and pressing mechanism (5) is used to lift the driven tug wheel (9) to separate the tug belt (4) from the cloth; Wherein, the lifting and pressing mechanism (5) comprises: A lifting and pressing motor (6), an output end of which is provided with an eccentric cam (7); An articulated arm (8), the middle portion of which is articulated on the mounting frame (1); A driven tug wheel (9) is rotatably arranged at the lower end of the articulated arm (8), and the tug wheel belt (4) is sleeved outside the driven tug wheel (9); and A lifting and pressing spring (12), the upper end of which is arranged on the mounting frame (1), and the lower end of which is connected to a mounting arm (13) arranged on the hinged arm (8), so as to ensure that the lower end of the hinged arm (8) always has a tendency to move toward the cloth; The eccentric cam (7) movably abuts against the abutment portion (81) of the articulated arm (8); when the eccentric cam (7) pushes the abutment portion (81), the articulated arm (8) rotates so that the driven tug wheel (9) tilts upward and detaches from the cloth; The distance from the abutting portion (81) to the middle of the articulated arm (8) is greater than the distance from the middle of the articulated arm (8) to the lower end of the articulated arm (8).

2. The mop wheel lifting and pressing device according to claim 1, characterized in that: The eccentric cam (7) is provided with a push rod (10), and the mounting frame (1) is hingedly provided with a hinge block (11), and the push rod (10) and the hinge block (11) are movably connected; The front end of the push rod (10) movably abuts against the abutment portion (81) of the interlocking arm.

3. The mop wheel lifting and pressing device according to claim 2, characterized in that: The lifting and pressing mechanism (5) further comprises a distance adjusting member (14), wherein the distance adjusting member (14) is threadedly arranged on the mounting frame (1); The upper end of the lifting and pressing spring (12) is arranged at the lower end of the distance adjusting member (14).

4. A mop wheel lifting and pressing device according to any one of claims 1 to 3, characterized in that: Also included is a tensioning mechanism (15), which comprises: A tensioning shaft (16) arranged on the mounting frame (1); A tensioning arm (17), the front end of which is hinged on the tensioning shaft (16); A tensioning wheel (18), which is arranged at the front end of the tensioning arm (17) and movably abuts against the outer side of the tug belt (4); and A tensioning torsion spring (19) is arranged on the tensioning shaft (16) so as to ensure that the tensioning wheel (18) always has a tendency to move toward the tug belt (4).

5. The mop wheel lifting and pressing device according to claim 4, characterized in that: The rear end of the tensioning arm (17) is provided with a protrusion (20), the hinged arm (8) is provided with a toggle member (21), and the protrusion (20) is located on the movement track of the toggle member (21); When the articulated arm (8) drives the driven tug wheel (9) to rise, the toggle member (21) moves toward the protrusion (20) to drive the tensioning arm (17) to rotate so as to achieve the lifting of the tensioning wheel (18).

6. The mop wheel lifting and pressing device according to claim 5, characterized in that: The protrusion (20) is provided with a threaded pin (22), and the position of the threaded pin (22) on the protrusion (20) is adjusted so that the toggle member (21) can drive the tensioning arm (17) to rotate in advance.

7. The mop wheel lifting and pressing device according to claim 6, characterized in that: The articulated arm (8) is arranged on the mounting frame (1) via an articulated shaft (23), a positioning wheel (24) is arranged on the articulated shaft (23), and the positioning wheel (24) rotates to abut against the inner side of the tug belt (4).

8. The mop wheel lifting and pressing device according to claim 7, characterized in that: The hinge shaft (23) is provided with a clamping spring (25), and the clamping spring (25) is used to fix the hinge arm (8) on the hinge shaft (23).

9. The mop wheel lifting and pressing device according to claim 8, characterized in that: The lifting and pressing mechanism (5) further comprises a baffle (26), one end of which is arranged on the hinge shaft (23), and the other end of which is connected to the hinge arm (8) via a fixing pin (27); The baffle (26) is used to shield the driven tug wheel (9), the positioning wheel (24) and part of the tug wheel belt (4).

Images