CN211079602U - High-stability independent driving mechanism for presser foot of embroidery machine - Google Patents

Abstract

The utility model provides a high stability's independent actuating mechanism of embroidery machine presser foot, includes aircraft nose, guide bar, transmission slider and drive assembly, the transmission slider cover is established on the guide bar and can along the vertical lift of guide bar, drive assembly includes driving motor, transition transmission portion and slider connecting portion, driving motor connects on the outer wall of aircraft nose, transition transmission portion transmission is connected driving motor with between the slider connecting portion, slider connecting portion receive transition transmission portion drives and is sharp elevating movement, slider connecting portion fixed connection in the transmission slider drives its vertical lift. The utility model discloses compact structure, traditional connecting rod transmission mode power take off loss is less relatively, the limited system of the upper and lower displacement volume of elevator is low, and motor operation regulation and control is simple and easy, and stability is good, and the transmission is smooth and easy, and is safe high-efficient, and embroidery quality can improve, is worth using widely in this field.

Description

High-stability independent driving mechanism for presser foot of embroidery machine

Technical Field

The utility model relates to an embroidery machine technical field specifically is an embroidery machine presser foot independent driving mechanism of high stability.

Background

The existing embroidery machine experiences the transition from the traditional mode of integrally driving the presser foot and the needle rod to the mode of separately driving the presser foot and the needle rod on the design of a presser foot driving structure, because the mode of independently driving the presser foot can better meet the embroidery requirement at present, the initial height of the presser foot can be independently adjusted, the adaptability to different cloth materials is good, and the problem of overlarge load of a main shaft used by the original integral type is eliminated.

For example, the independent presser foot control mechanism of an embroidery machine disclosed in patent document CN201721055665.8 includes a headstock, a driving mechanism is provided on the headstock, the driving mechanism is connected with a presser foot driving seat through a connecting rod transmission structure, the presser foot driving seat is movably sleeved on a presser foot driving rod fixedly connected with the headstock, one end of the presser foot driving seat is connected with a presser foot needle rod which can move synchronously with the presser foot driving seat when the presser foot driving seat moves up and down along the axial direction of the presser foot driving rod, the presser foot needle rod is connected with a presser foot, and the circumferential outer side of the presser foot driving seat is further connected with a needle rod assembly which is movably arranged relative to the presser foot driving seat through a rod positioning structure and does not interfere with each other when the presser foot driving seat moves up and down, although the proposal can realize independent control, the presser foot driving seat is driven by the connecting rod transmission structure, therefore, there are still disadvantages. In the scheme, the driving motor drives the first connecting rod and the second connecting rod to rotate, and the rotating motion of the first connecting rod and the second connecting rod is converted into the linear motion of the presser foot driving seat, but just because of the rotating motion of the connecting rods, the final stress of the presser foot driving seat is also changed in a reciprocating mode (namely vertical and horizontal component force exists and is changed constantly) in the size and the direction, and is not only smoothly and uniformly drawn in the vertical direction, so that the corresponding relation between the rotating angle of the motor and the lifting displacement of the presser foot is not simple and linear, the motor is complex in related control and adjustment algorithm, and the design difficulty is relatively high. In addition, the output torque of the motor and the stroke adjustment of the presser foot driving seat in the scheme are actually conflicting, that is, the presser foot driving seat has a problem that the vertical stroke is difficult to overcome in the point that the vertical stroke is increased, because if the presser foot driving seat is required to have larger displacement upwards or downwards, the connecting rod needs to be longer, but if so, the output torque of the motor is more greatly lost when being transmitted to the presser foot driving seat (in addition, the lifting resistance caused by the aforementioned component force in the horizontal direction also causes loss), so that the stability of the transmission structure in a high-speed operation state cannot be ensured, the adjustable range of the lifting stroke of the presser foot driving seat is small and difficult to change, and the whole presser foot driving seat cannot achieve a better and more stable use condition.

Disclosure of Invention

A technical object of the utility model is to provide an embroidery machine presser foot independent driving mechanism of high stability, the problem that motor regulation control is complicated, lift stroke and operating stability conflict, transmission loss are big that connecting rod transmission mode exists among the solution prior art.

The utility model discloses a concrete technical scheme as follows: the utility model provides a high stability's independent actuating mechanism of embroidery machine presser foot, includes aircraft nose, guide bar, transmission slider and drive assembly, the transmission slider cover is established on the guide bar and can along the vertical lift of guide bar, drive assembly includes driving motor, transition transmission portion and slider connecting portion, driving motor connects on the outer wall of aircraft nose, transition transmission portion transmission is connected driving motor with between the slider connecting portion, slider connecting portion receive transition transmission portion drives and is sharp elevating movement, slider connecting portion fixed connection in the transmission slider drives its vertical lift.

Preferably, the transition transmission part comprises a driving belt wheel and at least one driven belt wheel, the driving belt wheel is driven by the driving motor, and the driven belt wheel is connected to a connecting shaft arranged on the side wall of the machine head; the slider connecting part comprises a belt, the belt is wound on the driving belt wheel and the driven belt wheel, and the belt is fixedly connected with the transmission slider and drives the transmission slider to vertically lift.

Preferably, the belt after the winding shaping comprises at least one vertical driving section, the transmission slide block is provided with a belt connecting part, and the belt connecting part is fixedly connected with the vertical driving section.

Preferably, the belt is provided with tooth grooves, and the belt connecting part is provided with a belt connecting surface meshed with the tooth grooves on the belt.

Preferably, the belt connecting portion is provided with a belt fastening groove, and the belt is placed in and fixed to the belt fastening groove.

Preferably, the transition transmission part comprises a driving gear, and the driving gear is driven by the driving motor; the sliding block connecting part comprises a rack, the driving gear is meshed with the rack and is fixedly connected with the transmission sliding block and drives the transmission sliding block to vertically lift.

Preferably, the transition transmission part further comprises at least one transition gear, the transition gear is driven by the driving motor, and the driving gear is driven by the transition gear.

The technical advantages of the utility model reside in that the independent actuating mechanism of presser foot compact structure, it is comparatively nimble in the mode of setting up, the elevator can go up and down smoothly in vertical direction, and traditional connecting rod transmission mode power output loss is less relatively, the limited system of the upper and lower displacement volume of elevator is low, through drive assembly can realize the adjustment and the regulation control of lift stroke comparatively easily comparatively simple and reliable, even under high-speed running state, also can effectively guarantee stability, and the transmission is smooth and easy, and is safe high-efficient, and embroidery quality can improve, is worth using widely in this field.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the present invention;

fig. 3 is a schematic structural diagram of a third embodiment of the present invention;

fig. 4 is a schematic structural diagram of a fourth embodiment of the present invention;

fig. 5 is a schematic structural diagram of a fifth embodiment of the present invention;

fig. 6 is a schematic structural diagram of a sixth embodiment of the present invention;

FIG. 7 is a schematic structural view of the needle bar, presser foot bar, and needle bar driving bar according to the embodiment of the present invention;

FIG. 8 is a schematic structural view of the needle bar, presser foot bar, and needle bar driving bar according to the embodiment of the present invention;

the names of the parts corresponding to the numbers in the figure are respectively: 1-machine head, 2-guide rod, 3-transmission slide block, 31-belt connecting part, 311-belt connecting surface, 312-belt fastening groove, 32-presser bar connecting part, 321-butt joint cavity, 33-driving rod connecting part, 331-connecting groove, 4-presser bar, 41-driving block, 411-butt joint, 5-needle rod driving rod, 6-needle rod, a 1-belt, a 11-vertical driving section, a 2-driving gear, a 3-driven gear, b 1-rack, b 2-driving gear and c 1-driving motor.

Detailed Description

The invention will be further explained by means of specific embodiments with reference to the drawings, in which:

as mentioned in the related art, the conventional link transmission mechanism transfers the power of the motor and drives the connected components to move up and down by the end of the link transmission mechanism in a form of mutually hinging a plurality of straight links, and relies on the step-by-step transmission of the plurality of links. The action of the multi-link is in a rotating form, the direction and the magnitude of the force applied to the transmission slide block are changed repeatedly, the transmission slide block is subjected to constantly changed vertical component force and horizontal component force, therefore, the adjustment and control of a driving source such as a motor are relatively complex, the requirement on action matching is high, and the lifting resistance is increased between the multi-link and the guide rod due to the horizontal component force. In addition, the upper and lower limits of the displacement of the transmission slide block are influenced by the length of the connecting rod, and if the aim of reducing the loss of the driving output power and enlarging the lifting stroke of the transmission slide block as much as possible or enlarging the adjustable range is to be achieved, the aim is contradictory and cannot be changed easily, which is also the main defect of the scheme.

Based on the above problems, after thought and practice, the applicant provides a lead screw transmission type presser foot independent driving device, which comprises a needle bar frame, a needle bar 6, a presser bar 4, a needle bar driving rod 5, a machine head 1, a guide rod 2, a transmission slide block 3 and a driving assembly, wherein the guide rod 2 is connected to the front side of the machine head 1, the transmission slide block 3 is sleeved on the guide rod 2 and can vertically lift along the guide rod 2, the driving assembly in the device comprises a driving motor c1, a transition transmission part and a slide block connecting part, the driving motor c1 is connected to the outer wall of the machine head 1, the transition transmission part is driven by the driving motor c1, the transition transmission part is in transmission connection between the driving motor c1 and the slide block connecting part, the slide block connecting part is driven by the transition transmission part to do linear lifting motion, the slide block connecting part is fixedly connected to the transmission slide block and drives the transmission slide block to vertically lift, the slide block connecting part, the slider transmission part is positioned in the machine head 1, and the transition transmission part can be only provided with a part positioned in the machine head 1 according to the length of the transmission stroke, or is provided with parts positioned in the machine head 1 and outside the machine head 1. This scheme has eliminated the transmission control that many connecting rod structures of transmission exist complicacy, the defective problem of transmission stability, and the regulation and control of motor is simple and easy for transmission slider 3 can be in the smooth-going lift of vertical direction, and the structure sets up the flexibility ratio height, and the limited system of lift stroke and adjustment are simple and easy, and there is not great conflict in the increase of lift stroke and high stability, and the operation control of corresponding motor is simple and power transmission loss is low.

The first embodiment is as follows: as shown in fig. 1, the transition transmission part comprises a driving pulley a2 and a driven pulley a3, both pulleys are arranged inside the handpiece 1, the driving motor c1 is connected to the outer wall of the handpiece 1, the driving pulley a2 is connected to the output shaft of the driving motor c1, and the driven pulley a3 is connected to a connecting shaft arranged on the inner side wall of the handpiece 1; the slider connecting part comprises a belt a1, and the belt a1 is wound on the driving pulley a2 and the driven pulley a 3; the transmission slide block 3 is sleeved on the guide rod 2, the belt connecting part 31 is arranged on the transmission slide block 3, and the belt connecting part 31 is fixedly connected with the belt a 1. The belt a1 after being wound, connected and shaped includes a vertical driving section a11, i.e. the section of the belt a1 with two vertical ends near the outer side in fig. 1, and the belt connecting portion 31 is fixedly connected with the vertical driving section a 11. The belt a1 is a double-sided transmission belt, the belt connecting portion 31 is provided with a connecting surface 312 on which the tooth-grooved surfaces of the belt a1 are engaged, that is, the belt connecting portion 31 is engaged and fixed with the belt a1, and the connecting surface 312 may be a single surface, as shown in fig. 1, or may be two surfaces on which belt insertion grooves are formed at intervals. In order to make the engagement fixing manner more firm, it is easy to think that additional binding fixing effects can be achieved through additional components, such as ropes, belts, etc., or additional holding effects can be achieved through hoops, clips, etc., or additional fixing connection effects can be achieved through screws, nuts, etc.

Example two: referring to fig. 2, the difference between the first embodiment and the second embodiment is that a belt connecting portion 31 is provided with a belt fastening slot 311 (which may be a lateral opening slot to facilitate the insertion of the vertical driving section a 11), the vertical driving section a11 is inserted into the belt fastening slot 311 and is clamped or fixedly connected therewith, the vertical driving section a11 may be fixed by a fixing member such as a screw, a hoop, or an adhesive tape, and the belt connecting portion 31 may also be directly fixedly connected with the belt a1 by such a fixing manner, but the effect is inferior to that of the above-mentioned manner.

Example three: referring to fig. 3, the present embodiment is different from the first embodiment in that a second driven pulley a3 is provided, which is often caused by the connection position of the output shaft of the driving motor c1 and the side plate of the head 1 in the present embodiment is different from that shown in fig. 1, or the structure of the head 1 is formed differently from that shown in fig. 1, or the relative position of the guide rod 2 and the driving assembly is adjusted differently from that shown in fig. 1, so that the forming position of the vertical driving segment a11 is adjusted by using more pulleys. The two driven pulleys a3 in this example are separately up and down, so that the belt a1 wound between them forms a vertical driving segment a 11.

Example four: referring to fig. 4, the present embodiment is different from the third embodiment in that the driving motor c1 is installed in a different direction, and the belt connecting portion 31 is formed with a belt fastening groove 311. In the third embodiment, as well as in the first and second embodiments, the output shaft of the driving motor c1 faces the side plate of the handpiece 1, in the present embodiment, the driving motor c1 side is attached to the side plate of the handpiece 1 and the output shaft faces the front of the handpiece 1, so that the length of the driving motor c1 in the horizontal direction can be reduced to a certain extent, and the overall layout is more reasonable and beautiful. In this installation, more driven pulleys a3 are necessary, the driving pulley a2 is connected to the output shaft of the driving motor c1 at the outer side of the front part of the handpiece 1, and the two driven pulleys a3 are opposite up and down at the inner side of the front part of the handpiece 1, that is, the belt a1 between the two driven pulleys a3 forms a vertical driving section a 11.

Example five: referring to fig. 5, the present embodiment is different from the fourth embodiment in that the installation orientation of the driving motor c1 is different, and an additional transition transmission part is further provided between the driving motor c1 and the driving pulley a 2. Unlike the first embodiment, the driving motor c1 is mounted on the side plate of the other side of the handpiece, and the side plate is a detachable independent plate. At this time, the output shaft position of the driving motor c1 and the relative positions between the transmission slide block 3, the belt and the belt wheel are still arranged according to the arrangement shown in fig. 1, so that the coordination action is not good, and therefore, a transition transmission assembly is additionally arranged. The mode that extra transition transmission portion adopted in the figure still was band pulley and belt is located the outside of aircraft nose 1 for the transmission drives inside driving pulley a2 and the driven pulley a3 of aircraft nose 1, and the setting is simple, and the operation is stable, arranges outside the integrated into one piece formula curb plate relative to independent curb plate on aircraft nose 1, and a transition band pulley passes through the pivot pole and the shaft coupling is connected with driving motor c1, and another transition band pulley passes through the pivot pole and is connected with driving pulley a 2. The additional transition transmission part can also drive the driving belt pulley a2 in a gear transmission mode by using a gear with a shaft. The additional transition transmission part is used for transmitting the power of the driving motor c1 to the driving pulley a2, and related to similar existing transmission structures, the additional transition transmission part can also be in a gear transmission mode, and details are not repeated here.

Example six: referring to fig. 6, the present embodiment is different from all the previous embodiments in that the driving component is not in a gear and belt type transmission, but in a gear and rack type manner. Specifically, the sliding block connecting part comprises a rack b1, the transition transmission part comprises a driving gear b2, a driving motor c1 is connected to the outer wall of the handpiece 1, and a driving gear b2 is connected to an output shaft of the driving motor c1 and is meshed with the rack b 1; the transmission slide block 3 is sleeved on the guide rod 2, and the rack b1 is fixedly connected with the rack fixing part 31 of the transmission slide block 3 and can be simply fixed by screw connection. The driving gear b2 rotates to drive the rack b1 to perform relative displacement, so that the transmission slide block 3 fixedly connected with the rack b1 is lifted. It will be readily appreciated that additional transition gears may be used as described in connection with embodiment five to adjust the motor position and drive the gear b2 through the additional transition gears.

The driving assembly can also be additionally provided with a transition gear, the driving motor c1 is connected to the handpiece 1, the transition gear is connected to the output shaft of the driving motor c1, and the driving gear b2 is connected to a connecting shaft arranged on the inner wall of the handpiece 1 and is in meshed connection with the transition gear. Of course, if there is a need for setting, for example, there is a need for the connection position between the transmission slide block 3 and the driving gear b2, the number of the transition gears may be more, and the transition gears are sequentially engaged with each other from front to back, so as to facilitate the adaptation and adjustment.

In addition to the description of all the embodiments above, the arrangement of the needle bar 6, presser bar 4, and needle bar drive lever 5 associated with the drive slider 3 will be described in additional detail, see fig. 7 and 8. The needle bar frame is connected to the front side of the machine head 1 and is butted with the front side opening part of the machine head 1, the needle bar frame is not shown in the figure, and the needle bar 6 and the presser foot bar 4 are both movably connected to the needle bar frame. The needle bar driving rod 5 is connected to the machine head 1, is also vertically arranged at the front opening part of the machine head 1, is parallel to the guide rod 2, and is provided with a transmission push-pull component (generally the top of the rod body) to drive the needle bar a.

The transmission slide block 3 is further provided with a pressure foot rod connecting part 32, the pressure foot rod 4 is provided with a driving block 41, the pressure foot rod connecting part 32 is in butt joint with the driving block 41, and the driving block 41 is driven by the pressure foot rod connecting part 32 to drive the pressure foot rod 4 to move. The driving block 41 is integrally formed or fixedly installed on the presser bar 4, and ascends and descends together with the presser bar 4. The presser bar connecting portion 32 is provided with a docking cavity 321, and the driving block 41 is provided with a docking head 411, and the docking head 411 is placed in the docking cavity 321. As used herein, "butt-joint" is understood to mean the engagement of similar structural members, such as holes and rods, slots and blocks, either as an interference or clearance fit. In the illustration, the docking cavity 321 is a horizontal slot as shown in the illustration, and further, the docking head 411 is not fixedly connected with the docking cavity 321, but extends into the docking cavity, when the transmission slider 3 ascends or descends, the upper inner wall or the lower inner wall of the docking cavity 321 abuts against the docking head 411, and the docking head 411 is pressed to follow up, which also meets the requirement of the color changing operation. In some embodiments, "docking" may also be understood in the following manner: the presser bar 4 is sleeved with a return spring, and the return spring is located between the driving block 41 and the lower beam of the needle bar frame (the presser bar 4 is mounted on the needle bar frame, and the needle bar frame is not shown), so the aforementioned butt joint between the presser bar connecting portion 32 and the driving block 41 can also be in a form that the presser bar connecting portion 32 is located above the driving block 41, the presser bar connecting portion 32 is used for pressing the driving block 41 down to drive the presser bar 4 to descend, and the return spring is used for enabling the presser bar 4 to return by itself.

The transmission slide block 3 is also provided with a driving rod connecting part 33, the driving rod connecting part 33 is movably connected with the needle rod driving rod 5 and can vertically move along the needle rod driving rod 5, and the needle rod driving rod 5 is fixedly connected to the machine head 1 as the guide rod 2. As can be seen from fig. 8, the driving rod connecting portion 33 is provided with a connecting groove 331, and the connecting groove 331 is half-wrapped on the rod body surface of the needle rod driving rod 5, but may also be in a full-wrapped form, but relatively speaking, the half-wrapped form not only realizes the relative sliding function, but also is convenient for disassembly and maintenance. The existence of the driving rod connecting part 33 ensures that the transmission slide block 3 keeps stable in vertical lifting, and the rotation deviation can not occur, thereby ensuring that the presser bar 4 is accurately and stably driven to lift.

In addition, a needle bar connecting part is also arranged on the driving block 41 and is movably connected with the needle bar 6 on the needle bar frame to move vertically along the needle bar 6, so as to prevent the presser bar 4 from rotating and play a role in positioning. The shank connecting part also corresponds to an extended end piece and is also provided with a vertically through-going slot which is fully or semi-enclosed on the shank 6. The lifting of the needle bar 6 is realized by the driving push-pull component at the top of the needle bar driving rod 5, which is also well-established in the prior art.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The purpose of the utility model is completely and effectively realized. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims (7)

1. The utility model provides an embroidery machine presser foot independent driving mechanism of high stability, includes aircraft nose (1), guide bar (2), transmission slider (3) and drive assembly, transmission slider (3) cover is established on guide bar (2) and can be along the vertical lift of guide bar (2), its characterized in that: drive assembly includes driving motor (c 1), transition transmission portion and slider connecting portion, driving motor (c 1) are connected on the outer wall of aircraft nose (1), transition transmission portion transmission is connected driving motor (c 1) with between the slider connecting portion, slider connecting portion receive transition transmission portion drives and is sharp elevating movement, slider connecting portion fixed connection in transmission slider (3) and drive its vertical lift.

2. The independent driving mechanism of embroidery machine presser foot with high stability according to claim 1, characterized in that: the transition transmission part comprises a driving pulley (a 2) and at least one driven pulley (a 3), the driving pulley (a 2) is driven by the driving motor (c 1), and the driven pulley (a 3) is connected to a connecting shaft arranged on the side wall of the handpiece (1);

the slider connecting part comprises a belt (a 1), the belt (a 1) is wound on the driving belt wheel (a 2) and the driven belt wheel (a 3), and the belt (a 1) is fixedly connected with the transmission slider (3) and drives the transmission slider to vertically lift.

3. The independent driving mechanism of embroidery machine presser foot with high stability according to claim 2, characterized in that: the belt (a 1) after the wraparound shaping comprises at least one vertical driving section (a 11), a belt connecting part (31) is arranged on the transmission sliding block (3), and the belt connecting part (31) is fixedly connected with the vertical driving section (a 11).

4. The independent driving mechanism of embroidery machine presser foot with high stability of claim 3, characterized in that: the belt (a 1) is provided with a tooth groove, and the belt connecting part (31) is provided with a belt connecting surface (311) meshed with the tooth groove on the belt (a 1).

5. The independent driving mechanism of embroidery machine presser foot with high stability of claim 3, characterized in that: the belt connecting part (31) is provided with a belt fastening groove (312), and the belt (a 1) is placed and fixed in the belt fastening groove (312).

6. The independent driving mechanism of embroidery machine presser foot with high stability according to claim 1, characterized in that: the transition transmission part comprises a driving gear (b 2), and the driving gear (b 2) is driven by the driving motor (c 1);

the sliding block connecting part comprises a rack (b 1), the driving gear (b 2) is meshed with the rack (b 1), and the rack (b 1) is fixedly connected with the transmission sliding block (3) and drives the transmission sliding block to vertically lift.

7. The independent driving mechanism of embroidery machine presser foot with high stability of claim 6, characterized in that: the transition transmission part also comprises at least one transition gear, the transition gear is driven by the driving motor (c 1), and the driving gear (b 2) is driven by the transition gear.

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