CN211199680U

CN211199680U - Linear driving type presser foot independent driving mechanism

Info

Publication number: CN211199680U
Application number: CN201921821258.2U
Authority: CN
Inventors: 陈天龙; 方狄永
Original assignee: Zhejiang Pumeike Intelligent Embroidery Equipment Co ltd
Current assignee: Zhejiang Pumeike Intelligent Embroidery Equipment Co ltd
Priority date: 2019-10-28
Filing date: 2019-10-28
Publication date: 2020-08-07
Anticipated expiration: 2029-10-28

Abstract

The linear driving type presser foot independent driving mechanism comprises a machine head, a transmission lifting block and a linear motor, wherein the linear motor comprises a stator and a rotor, the rotor is installed on the stator, the stator is fixedly connected in the machine head, the transmission lifting block is fixedly connected on the rotor, and the rotor drives the transmission lifting block to vertically lift. The utility model discloses compact structure, it is comparatively nimble on setting up the mode, the elevator can go up and down smoothly in vertical direction, through the linear electric motor structure can realize the adjustment and the regulation control of lift stroke comparatively easily and reliably, even under high-speed running state, also can effectively guarantee stability, and relatively traditional connecting rod transmission mode power output loss is less, the limited system of the upper and lower displacement volume of elevator is low, 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

Linear driving type presser foot independent driving mechanism

Technical Field

The utility model relates to an embroidery machine technical field specifically is a presser foot independent actuating mechanism of linear drive formula.

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 a linear drive formula's independent actuating mechanism of presser foot solves 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 prior art.

The utility model discloses a concrete technical scheme as follows: the linear driving type presser foot independent driving mechanism comprises a machine head, a transmission lifting block and a linear motor, wherein the linear motor comprises a stator and a rotor, the rotor is installed on the stator, the stator is fixedly connected in the machine head, the transmission lifting block is fixedly connected on the rotor, and the rotor drives the transmission lifting block to vertically lift.

Preferably, the stator is a magnetic rod, the magnetic rod is vertically arranged to enable the rotor to vertically lift along a rod body of the rotor, two ends of the magnetic rod are fixedly connected with the side wall of the machine head, and the stator and the rotor form a tubular linear motor structure.

Preferably, the stator is a flat plate with a magnetic track, the flat plate with the magnetic track is vertically arranged to enable the rotor to vertically lift along a magnetic track of the rotor, the flat plate with the magnetic track is fixedly connected with the side wall of the machine head, and the stator and the rotor form a flat plate type linear motor structure.

Preferably, the stator is for taking magnetic track U type frid, take the vertical setting of magnetic track U type frid and make the active cell is along the vertical lift of its magnetic track, take magnetic track U type frid with the lateral wall fixed connection of aircraft nose, the stator reaches U type slot type linear electric motor structure is constituteed to the active cell.

Preferably, the transmission lifting block is provided with a motor connecting part, and the motor connecting part is fixedly connected with the outer shell of the rotor.

Preferably, the independent presser foot driving mechanism further comprises a presser foot rod and a needle rod frame, the needle rod frame is connected to the front side of the machine head, and the presser foot rod is movably connected to the needle rod frame; the transmission lifting block is provided with a pressure foot rod connecting part, the pressure foot rod is provided with a driving block, the pressure foot rod connecting part is in butt joint with the driving block, and the driving block drives the pressure foot rod to lift through the pressure foot rod connecting part so as to drive the pressure foot rod to lift.

Preferably, a butt joint cavity is arranged on the connecting portion of the presser bar, a butt joint is arranged on the driving block, and the butt joint is placed in the butt joint cavity.

Preferably, the docking cavity is horizontally penetrated and arranged towards the presser foot rod opening.

Preferably, the presser foot independent driving mechanism further comprises a needle bar driving rod, the needle bar driving rod is fixedly connected in the machine head, and the needle bar driving rod is vertically arranged and parallel to the stator; the transmission lifting block is provided with a needle rod driving rod connecting part, and the needle rod driving rod is movably connected with the needle rod driving rod connecting part so that the needle rod driving rod connecting part can vertically lift along the needle rod driving rod.

Preferably, the needle bar drive lever connecting portion is provided with a connecting groove, the connecting groove is vertically communicated, and the needle bar drive lever is slidably connected in the connecting groove.

The technical advantages of the utility model reside in that presser foot independent drive mechanism compact structure, it is comparatively nimble in the mode of setting up, the elevator can go up and down smoothly in vertical direction, through the linear electric motor structure can realize the adjustment and the regulation control of lift stroke comparatively easily and reliably, even under high-speed running state, also can effectively guarantee stability, and relatively traditional connecting rod transmission mode power take off loss is less, the limited system of the upper and lower displacement volume of elevator is low, 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 an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of another embodiment of the present invention;

FIG. 3 is a schematic structural diagram of another embodiment of the present invention;

fig. 4 is a schematic view of the structure of the transmission lifting block and its associated needle bar, presser bar, and needle bar driving rod of the present invention;

fig. 5 is a schematic view of the structure of the transmission lifting block and its associated needle bar, presser bar, and needle bar driving rod of the present invention;

the names of the parts corresponding to the numbers in the figure are respectively: 1-machine head, 2-linear motor, 21-stator, 22-rotor, 3-transmission lifting block, 31-motor connecting part, 32-presser bar connecting part, 321-butt joint cavity, 33-needle bar driving rod connecting part, 331-connecting groove, 4-presser bar, 41-driving block, 411-butt joint, 5-needle bar driving rod and 6-needle bar.

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 thinking and practice, the applicant provides a linear driving type presser foot independent driving mechanism, 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 transmission lifting block 3 and a linear motor 2, wherein the linear motor 2 comprises a stator 21 and a rotor 22, the rotor 22 is installed on the stator 21, the stator 21 is fixedly connected in the machine head 1 (namely, the stator is consistent with the arrangement form of a guide rod in the space at the front side of the traditional machine head 1), the transmission lifting block 3 is fixedly connected on the rotor 22, and the rotor 22 drives the transmission lifting block 3 to vertically lift. The transmission lifting block 3 is provided with a motor connecting part 31, and the motor connecting part 31 is fixedly connected with the outer shell of the rotor 22, so that the method is simple and can be directly fixed by screwing. The problem that transmission control is complicated, transmission stability is defective that transmission multi-link structure exists has been eliminated to this scheme, and linear electric motor's regulation and control is simple and easy for transmission elevator block 3 can go up and down smoothly in 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 linear motor 2 can be applied to the handpiece 1 according to three common forms in the prior art, namely a tubular linear motor, a flat plate type linear motor and a U-shaped groove linear motor. As shown in fig. 1, the stator 21 is a magnetic rod, the mover 22 is a cylindrical sleeve-shaped coil winding package, the magnetic rod is vertically arranged to vertically lift the mover 22 along the rod body, two ends of the magnetic rod are fixedly connected with the inner wall of the handpiece 1, and the stator 21 and the mover 22 form a tubular linear motor 2 structure; as shown in the simplified schematic diagram of fig. 2, the stator 21 is a flat plate with magnetic tracks, the mover 22 is a slider-shaped coil winding package, the flat plate with magnetic tracks is vertically disposed to enable the mover 22 to vertically lift along the magnetic tracks, the peripheral side of the flat plate with magnetic tracks is fixedly connected with the side wall of the handpiece 1 (for example, the two ends of the flat plate are fixed with the top wall and the bottom wall of the handpiece, and the fixing manner of the side portion of the flat plate and the side wall of the handpiece can be arbitrarily selected), and the stator 21 and the mover 22 form a flat plate type linear motor; as shown in the simplified schematic diagram of fig. 3, the stator 21 is a U-shaped slot plate with a magnetic track, the mover is a "T" shaped block-shaped coil winding package, the U-shaped slot plate with the magnetic track is vertically disposed to enable the mover 22 to vertically lift along the magnetic track, the U-shaped slot plate with the magnetic track is fixedly connected to the side wall of the handpiece 1 (for example, two ends of the slot plate are fixed to the top wall and the bottom wall of the handpiece, and the fixing manner of the side portion of the slot plate to the side wall of the handpiece can be arbitrarily selected), and the stator 21 and the mover 22 form a U-shaped slot linear motor. The magnetic rod as the stator 21, the flat plate with magnetic tracks, the U-shaped slot plate with magnetic tracks, and the coil winding mounted thereon as the mover 22 are well known in the art and will not be described herein.

In addition to the above description of all the embodiments, the arrangement of the needle bar 6, the presser bar 4, and the needle bar driving rod 5 associated with the transmission lifting block 3 is described additionally, as shown in fig. 4 and 5, the needle bar frame is connected to the front side of the handpiece 1 and is butted with the front side opening portion of the handpiece 1, not shown in the drawings, and the needle bar 6 and the presser bar 4 are both movably connected to the needle bar frame and can be lifted vertically. The needle bar driving rod 5 is fixedly connected to the machine head 1, is also vertically arranged at the front opening part of the machine head 1 and is parallel to the stator 21, and is provided with a transmission push-pull component (generally the top of the rod body) to drive the needle bar a.

Still be equipped with presser bar connecting portion 32 on the transmission elevator block 3, be equipped with drive block 41 on the presser bar 4, presser bar connecting portion 32 and drive block 41 butt joint, drive block 41 is driven by presser bar connecting portion 32 and drives presser bar 4 motion. 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 slot horizontally penetrating and opening toward the presser foot bar 4 as shown in the illustration, and further, the docking head 411 is not fixedly connected to the docking cavity 321, but extends into the docking cavity, when the transmission lifting block 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 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 lifting block 3 is also provided with a needle rod driving rod connecting part 33, the needle rod 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. 5, the connecting portion 33 of the needle bar driving lever is provided with a vertically through connecting groove 331, and the connecting groove 331 is half-wrapped on the surface of the rod body of the needle bar driving lever 5, but may also be a full-wrapped form. The existence of the needle bar driving rod connecting part 33 ensures that the transmission lifting block 3 keeps stable in vertical lifting without rotating deviation, 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

1. The utility model provides a linear drive formula presser foot independent drive mechanism, includes aircraft nose (1), transmission elevator (3) and linear electric motor (2), linear electric motor (2) include stator (21) and active cell (22), active cell (22) are installed on stator (21), its characterized in that: stator (21) fixed connection be in aircraft nose (1), transmission elevator (3) fixed connection be in on active cell (22), active cell (22) drive transmission elevator (3) vertical lift.

2. A linearly driven presser foot independent drive mechanism according to claim 1, wherein: the stator (21) is a magnetic rod, the magnetic rod is vertically arranged, so that the rotor (22) vertically ascends and descends along the rod body of the rotor, and two ends of the magnetic rod are fixedly connected with the side wall of the machine head (1).

3. A linearly driven presser foot independent drive mechanism according to claim 1, wherein: the stator (21) is a flat plate with a magnetic track, the flat plate with the magnetic track is vertically arranged to enable the rotor (22) to vertically lift along the magnetic track, and the flat plate with the magnetic track is fixedly connected with the side wall of the machine head (1).

4. A linearly driven presser foot independent drive mechanism according to claim 1, wherein: stator (21) is for taking magnetic track U type frid, the vertical setting of magnetic track U type frid makes active cell (22) are along its vertical lift of magnetic track, magnetic track U type frid with the lateral wall fixed connection of aircraft nose (1).

5. A linearly driven presser foot independent drive mechanism according to claim 1, wherein: the transmission lifting block (3) is provided with a motor connecting part (31), and the motor connecting part (31) is fixedly connected with the outer shell of the rotor (22).

6. A linearly driven presser foot independent drive mechanism according to claim 1, wherein: the independent presser foot driving mechanism further comprises a presser foot rod (4) and a needle rod frame, the needle rod frame is connected to the front side of the machine head (1), and the presser foot rod (4) is movably connected to the needle rod frame; the device is characterized in that a presser bar connecting part (32) is arranged on the transmission lifting block (3), a driving block (41) is arranged on the presser bar (4), the presser bar connecting part (32) is in butt joint with the driving block (41), and the driving block (41) is driven by the presser bar connecting part (32) to lift and drive the presser bar (4) to lift.

7. A linearly driven presser foot independent drive mechanism according to claim 6, wherein: be equipped with butt joint chamber (321) on presser bar connecting portion (32), be equipped with butt joint (411) on drive block (41), butt joint (411) are put into butt joint chamber (321).

8. A linearly driven presser foot independent drive mechanism according to claim 7, wherein: the butt joint cavity (321) is horizontally communicated and arranged towards the opening of the presser foot rod (4).

9. A linearly driven presser foot independent drive mechanism according to claim 1, wherein: the presser foot independent driving mechanism further comprises a needle bar driving rod (5), the needle bar driving rod (5) is fixedly connected in the machine head (1), and the needle bar driving rod (5) is vertically arranged and is parallel to the stator (21); be equipped with needle bar drive lever connecting portion (33) on transmission elevator (3), needle bar drive lever (5) with needle bar drive lever connecting portion (33) swing joint and make needle bar drive lever connecting portion (33) can be along the vertical lift of needle bar drive lever (5).

10. A linearly driven presser foot independent drive mechanism according to claim 9, wherein: be equipped with spread groove (331) on needle bar drive lever connecting portion (33), spread groove (331) is vertical to be link up, needle bar drive lever (5) sliding connection be in spread groove (331).