CN108457020B - Presser foot device for embroidery machine and embroidery machine - Google Patents
Presser foot device for embroidery machine and embroidery machine Download PDFInfo
- Publication number
- CN108457020B CN108457020B CN201810200614.2A CN201810200614A CN108457020B CN 108457020 B CN108457020 B CN 108457020B CN 201810200614 A CN201810200614 A CN 201810200614A CN 108457020 B CN108457020 B CN 108457020B
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- Prior art keywords
- presser foot
- needle bar
- presser
- bar
- rod
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C9/00—Appliances for holding or feeding the base fabric in embroidering machines
- D05C9/20—Movement of the base fabric controlled by the presser feet; Driving arrangements therefor
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
- D05C11/02—Machine needles
- D05C11/06—Needle-driving or control mechanisms
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a presser foot device for an embroidery machine and the embroidery machine, and belongs to the field of embroidery machines. The motor and the rotating shaft are arranged in a special mode to drive the presser foot bars, the moving stroke and stroke dead points of the presser foot bars can be adjusted by adjusting the back and forth rotating angle of the motor, the stroke dead points of the presser foot can be adjusted according to different fabrics, different pressing requirements of different fabrics are met, and universality of the presser foot device is improved. The load on the power means for driving the needle bar is also reduced, which is advantageous in increasing the rate of needle bar operation.
Description
Technical Field
The invention relates to the technical field of embroidery machines, in particular to a presser foot device for an embroidery machine.
Background
With the progress of technology and technology, computerized embroidery machines have become the main mechanical equipment in the embroidery industry. In the working process of the existing embroidery machine, the power device drives the needle bar to move up and down through the transmission mechanism to realize embroidery. In order to compress the fabric, the needle bar frame is also provided with a presser foot matched with each needle bar, and the presser foot moves along with the needle bars under the driving of the needle bars. In the structure of the traditional embroidery machine, the presser foot is directly sleeved on the needle bar, the retainer ring is arranged on the needle bar and is abutted on the presser foot through the spring, and the impact force of the presser foot on fabric is large due to the spring during operation, so that the quality of a finished product is influenced. When the needle bar moves upwards to reset, the presser foot immediately moves upwards to reset along with the needle bar under the action of the spring, the presser foot cannot effectively compress the fabric when the needle bar resets, and the fabric can be shifted under the action of the needle bar, so that the quality of a finished product is affected. In addition, because the pressure of the presser foot depends on the pressure of the spring, and the upper dead point, the lower dead point and the travel of the up-and-down movement of the presser foot depend on the needle bar, the presser foot cannot be adjusted independently, and the presser foot is difficult to adapt to different pressing requirements of different fabrics and has poor universality. Furthermore, in the existing embroidery machine structure, the needle bar and the presser foot are driven to run simultaneously through one transmission shaft, the load of the transmission shaft is large, and the speed of the transmission shaft for driving the needle bar to run is limited, so that the working efficiency of the embroidery machine head is limited.
Disclosure of Invention
In order to solve the above-mentioned drawbacks and disadvantages of the prior art, the present invention provides a presser foot device for an embroidery machine in which a presser foot operates independently of a needle bar.
In order to achieve the technical purpose, the presser foot device for the embroidery machine comprises presser foot bars, rotating shafts and motors, wherein the presser foot bars are arranged at the bottoms of the presser foot bars, the motors are used for driving the rotating shafts, the fixed seats are further arranged, the plurality of the presser foot bars are arranged, the presser foot bars are arranged on the fixed seats in a penetrating mode and limited in the circumferential direction, the presser foot bars are connected to the rotating shafts in a transmission mode, and the rotating shafts are driven by the motors to rotate and drive the presser foot bars to move through transmission mechanisms to press or loosen fabric.
Preferably, the fixing seat is provided with a limit groove extending along the moving direction of the presser foot bar, the presser foot bar is provided with a limit protrusion matched with the limit groove, and the limit protrusion is inserted into the limit groove to limit the presser foot bar in the circumferential direction.
Preferably, the presser foot device further comprises a connecting rod transmission mechanism which is arranged between the presser foot rod and the rotating shaft and used for realizing transmission, the connecting rod transmission mechanism comprises a swing rod, a rocker, a middle rod and a linkage rod which are sequentially arranged, the swing rod is fixedly sleeved on the rotating shaft, two ends of the swing rod are respectively connected with the end part of the swing rod and the middle rod, one end of the middle rod is rotatably arranged, the other end of the middle rod is connected with the linkage rod, two ends of the linkage rod are respectively connected with the middle rod and the presser foot rod, and the presser foot rod is driven to move back and forth relative to the fixed seat through the swing rod, the rocker, the middle rod and the linkage rod when the rotating shaft rotates back and forth.
Preferably, the fixed cover is equipped with the linkage piece on the presser bar, and the one end of linkage piece is connected in the linkage piece realization and is connected with the presser bar, is equipped with spacing arch on the linkage piece, is equipped with along the presser bar direction of movement extension and with spacing protruding assorted spacing groove on the fixing base, spacing arch inserts and locates in the spacing inslot so that the circumference of presser bar receives spacingly.
Preferably, the motors are arranged in two, the two motors are respectively connected to the two ends of the rotating shaft in a transmission mode, and the two motors synchronously drive the rotating shaft to rotate back and forth.
After the technical scheme is adopted, the presser foot device for the embroidery machine has the following advantages:
1. the presser foot device for the embroidery machine improves the existing presser foot structure for the embroidery machine, the motor and the rotating shaft are additionally arranged, the motor drives the rotating shaft to rotate back and forth, the rotating shaft drives the presser foot bars to move back and forth when rotating back and forth, and the presser foot bars drive the presser foot bars to compress or loosen fabrics when moving back and forth. The motor and the rotating shaft are additionally arranged to be specially used for driving each presser foot bar, the moving stroke and stroke dead point of each presser foot bar can be adjusted by adjusting the back and forth rotating angle of the motor, so that the stroke dead point of the presser foot can be adaptively adjusted according to different fabrics, different pressing requirements of different fabrics are met, and the universality of the whole presser foot device is improved. In addition, the load of the power device for driving the needle bar is also lightened, the running speed of the needle bar is favorably improved, and the working efficiency of the embroidery machine is favorably improved. According to the invention, the plurality of presser bars are driven by one transmission shaft to simultaneously press or release the fabric, so that the moving synchronism of the presser bars is improved, the integral structure of the presser device is simplified, and the time point of pressing the fabric, the time of single pressing of the fabric and the time point of releasing the fabric of the presser device are regulated uniformly.
Because the presser foot bar runs completely and independently relative to the needle bar under the action of the motor, the action of loosening the fabric by the presser foot is delayed from the action of lifting and resetting the needle bar, the time of pressing the fabric by the presser foot under a single embroidery action is prolonged, the condition that the fabric shifts due to synchronous resetting of the presser foot and the needle bar is avoided, the fabric is better kept stable, and the quality of finished products after embroidery is improved.
The fixing base has still been established to the presser foot device, and the presser foot pole wears to locate on the fixing base and circumference receives spacingly, avoids the presser foot pole round trip movement to take place the rotation in circumference direction relative to the fixing base, improves the stability of presser foot pole round trip movement, and then improves the stability when the presser foot compresses tightly the surface fabric, avoids the presser foot pole to lead to the stability of surface fabric rotatory influence surface fabric because of there being simultaneously rotation when round trip movement.
2. Set up the spacing groove on the fixing base, set up spacing arch on the presser bar, spacing arch inserts and locates the spacing inslot, realizes the presser bar spacing in circumference through spacing arch and the cooperation in spacing groove, and limit structure between fixing base and the presser bar is simple, can be fine satisfy spacing requirement.
3. The connecting rod transmission mechanism is adopted between the rotating shaft and the presser foot rod to realize transmission, and the connecting rod transmission mechanism has simple and compact structure and can better meet the installation requirement of a small allowance installation space on the embroidery machine. In addition, the connecting rod transmission mechanism can well meet the working requirement of the presser foot device for high-speed operation. The connecting rod transmission mechanism preferably adopts a four-connecting rod transmission mechanism, one end of the middle rod is rotatably installed and limited, and the stability of the connecting rod transmission mechanism during operation can be improved, so that the stability of the presser foot rod during back and forth movement is further improved.
4. The linkage block is fixedly sleeved on the presser foot bar, the linkage bar is connected to the needle bar through the cooperation of the linkage block, the limiting protrusion matched with the limiting groove is arranged on the linkage bar, the limiting protrusion and the linkage block are combined together, the structure on the presser foot bar is convenient to simplify, and the load of the motor is reduced.
5. The motor sets up two, and two motors are transmitted respectively and are connected in the both ends of pivot, improves the synchronism when the whole rotation of pivot, and then is favorable to improving the synchronism when each presser foot pole round trip movement, better satisfies the requirement that the presser foot compresses tightly the surface fabric. Meanwhile, the bearing capacity of the rotating shaft can be improved, and the integral operation efficiency of the presser foot device is improved.
The invention also provides an embroidery machine, which comprises a frame and a plurality of machine heads arranged on the frame, wherein the machine heads comprise a machine shell and a needle bar frame, the needle bar frame can transversely move back and forth relative to the machine shell, a needle bar is arranged on the needle bar frame, a needle bar driver and a transmission shaft for driving the needle bar driver are arranged on the machine shell, and the embroidery machine further comprises the presser foot device for the embroidery machine.
Optionally, the fixing seat is provided with a plurality of and corresponds to each presser foot bar one by one, and each fixing seat is arranged on the lateral outer side of the machine head.
Preferably, two needle bar drivers are arranged on each machine head, two presser feet are arranged at the bottom end of each presser bar, and the two presser feet on the same presser bar correspond to the two needle bar drivers on the adjacent machine heads, which are close to the presser bar.
Preferably, the needle bar comprises a hole carving needle bar, a hole carving presser foot is arranged on the hole carving needle bar, and a recess for avoiding the presser foot is arranged on the hole carving presser foot.
Preferably, the motor is arranged on the frame, and the rotating shaft is rotationally arranged on the frame and is parallel to the transmission shaft.
The embroidery machine provided by the invention has the following advantages:
1. according to the embroidery machine provided by the invention, the motor and the rotating shaft which are specially used for driving the presser bar to move back and forth are additionally arranged, the presser bar completely and independently operates relative to the needle bar under the action of the motor, and the moving stroke and stroke dead points of the presser bar can be adjusted by adjusting the back and forth rotating angle of the motor, so that the stroke dead points of the presser bar can be adaptively adjusted according to different fabrics, different pressing requirements of different fabrics are met, and the integral universality of the presser bar device is improved. In addition, the load of the power device for driving the needle bar is also reduced, which is beneficial to improving the running speed of the needle bar. Because the presser foot bar operates independently of the needle bar, the action of loosening the fabric by the presser foot is delayed from the action of lifting and resetting the needle bar, the time of pressing the fabric by the presser foot under a single embroidery action can be prolonged, and the condition that the fabric is shifted due to synchronous resetting of the presser foot and the needle bar is avoided.
2. The fixing seats adopt split structures and are in one-to-one correspondence with the presser foot bars, the fixing seats are arranged on the outer sides of the corresponding machine heads in the transverse direction, the installation positions of the presser foot bars are reasonably arranged by fully utilizing the space of the lateral sides of the machine heads, the fixing seats and the presser foot bars are prevented from interfering the movement of the needle bar frame, and meanwhile, the whole overall dimension of the embroidery machine is controlled, so that the whole structure of the embroidery machine is kept compact.
3. Each machine head is provided with two needle bar drivers, and correspondingly, each presser bar is provided with two presser feet, and as the fixing seat is arranged on the transverse outer side of the machine head, the presser bar arranged on the fixing seat is also arranged on the transverse outer side of the machine head, so that the two presser feet on the same presser bar correspond to the two needle bar drivers on the adjacent machine head, which are close to the presser bar, respectively, and the corresponding relation between the presser feet and the needle bar drivers is reasonably set, so that the presser feet correspond to the needle bars driven by the needle bar drivers, and the pressing requirement of the needle bars on fabrics during working is better met.
4. The needle bar comprises a hole carving needle bar, at the moment, a hole carving presser foot matched with the hole carving needle bar is arranged on the hole carving needle bar, so that interference caused by movement of the presser foot to the hole carving presser foot is avoided, and the hole carving presser foot is provided with an avoidance concave part, so that the presser foot and the hole carving presser foot are not interfered with each other, and the working requirement of an embroidery machine is better met.
5. The motor is fixedly arranged on the frame, the rotating shaft is rotationally arranged on the frame, the rotating shaft is arranged in parallel with the transmission shaft, the installation relation between the rotating shaft and the transmission shaft is reasonably arranged, and the installation space is saved.
Drawings
FIG. 1 is a schematic view of a presser foot apparatus according to an embodiment of the invention;
FIG. 2 is a schematic view of a presser bar, a linkage and a mounting base in a presser foot device according to an embodiment of the invention;
FIG. 3 is a schematic view of an embroidery machine according to an embodiment of the invention;
FIG. 4 is a schematic view of a housing and presser foot device in an embroidery machine according to an embodiment of the invention;
FIG. 5 is a schematic view of a motor and a frame of an embroidery machine according to an embodiment of the invention;
FIG. 6 is a schematic view of a casing portion of an embroidery machine according to an embodiment of the invention;
FIG. 7 is a schematic view of a needle bar frame portion of an embroidery machine according to an embodiment of the invention;
FIG. 8 is a schematic diagram showing the driven separation of the needle bar and the thread take-up lever in the embroidery machine according to the first embodiment of the invention;
FIG. 9 is a schematic view showing a portion of an embroidery machine for driving a needle bar driver according to an embodiment of the invention;
fig. 10 is a schematic view illustrating positions of a needle bar and a presser bar of a hole carving in an embroidery machine according to an embodiment of the invention.
In the figure, 11-a shell, 11-a guide shaft, 12-an upper support beam, 13-a lower support beam, 14-a rolling bearing, 15-a transmission shaft, 16-a pin shaft, 17-a fixed guide rail, 2-a needle bar frame, 21-an upper cross beam, 22-a lower cross beam, 23-a fixed shaft, 24-a connecting block, 25-an opening groove, 26-a movable guide rail, 31-a needle bar, 311-a needle bar I, 312-a needle bar II, 313-a needle bar III, 314-a needle bar IV, 315-a needle bar V, 316-a needle bar VI, 32-a needle, 33-a driven piece, 331-a bump, 34-a needle clip, 35-a spring, 36-a limit screw, 37-a hole carving needle, 38-hole needle bar, 39-hole carving presser foot, 391-a avoidance concave part, 4-needle bar driver, 41-groove, 51-first cam, 511-shaft hole, 52-large link, 53-three-eye link, 531-shaft, 54-small link, 6-take-up lever, 71-take-up lever, 72-take-up roller, 73-intermediate shaft, 74-second cam, 741-transmission groove, 75-transmission lever, 76-roller, 81-presser foot, 811-fixed block, 82-presser foot lever, 83-spindle, 84-motor, 841-output shaft, 85-link transmission mechanism, 851-swing lever, 852-swing lever, 853-intermediate lever, 854-link lever, 856-sleeve hole, 857-link block, 858-limit projection, 86-fixed seat, 861-mounting hole, 862-a cavity, 863-a limit groove, 864-a fixed flange, 865-a through hole, 871-a driving wheel, 872-a driven wheel, 873-a belt, 874-a tensioning wheel, 88-a support, 9-a rack, 91-a bracket, 92-a supporting seat, 93-an adjusting seat and 94-a side support.
Detailed Description
The invention will be further described with reference to the drawings and the specific examples. It is to be understood that the terms "upper," "lower," "left," "right," "longitudinal," "transverse," "inner," "outer," "vertical," "horizontal," "top," "bottom," and the like, as used herein, are merely based on the orientation or positional relationship shown in the drawings and are merely for convenience in describing the present invention and to simplify the description, and do not indicate or imply that the devices/elements referred to must have or be configured and operated in a particular orientation and therefore should not be construed as limiting the invention.
Example 1
As shown in fig. 1, the presser foot device for an embroidery machine according to the first embodiment of the present invention includes a presser foot bar 82 having a presser foot 81 at a bottom end, a rotating shaft 83, a motor 84 for driving the rotating shaft, and a fixed seat 86 fixedly disposed thereon, where the plurality of presser foot bars are disposed, each of the presser foot bars is disposed on the fixed seat in a penetrating manner and limited in a circumferential direction, and each of the presser foot bars is in transmission connection with the rotating shaft. The rotating shaft 83 is driven by the motor 84 to rotate, and the rotating shaft drives each presser foot rod 82 to move so as to press or loosen the fabric by each presser foot 81.
The motor and the rotating shaft are additionally arranged and are specially used for driving the presser foot bars, the moving stroke and stroke dead points of the presser foot bars can be adjusted by adjusting the back and forth rotating angle of the motor, so that the stroke dead points of the presser foot can be adaptively adjusted according to different fabrics, and different pressing requirements of different fabrics are met. The presser foot bars run completely independently relative to the needle bars under the action of the motor, so that the action of loosening the fabric by the presser foot is delayed from the action of lifting and resetting the needle bars, the time of pressing the fabric by the presser foot under a single embroidery action is prolonged, and the condition that the fabric is shifted due to synchronous resetting of the presser foot and the needle bars is avoided. Each presser bar is arranged on the fixing base in a penetrating manner and limited in the circumferential direction, so that the presser bar is prevented from rotating in the circumferential direction relative to the fixing base during back and forth movement, the stability of the presser bar during back and forth movement is improved, and the stability of the presser bar during pressing of fabric is further improved. The plurality of presser bars are driven by the transmission shaft to simultaneously compress or release the fabric, so that the moving synchronism of the presser bars is improved, the integral structure of the presser device is simplified, and the time point of the presser device for compressing the fabric, the time of single compressing the fabric and the time point of releasing the fabric are conveniently and uniformly adjusted.
In this embodiment, the motor 84 drives the rotating shaft 83 to rotate back and forth, and when the rotating shaft rotates clockwise, the presser foot bar 82 is driven to move downwards, and the presser foot bar moves downwards to press the fabric. The rotating shaft 83 drives the presser bar 82 to move upwards when rotating anticlockwise, and the fabric is loosened when the presser bar moves upwards.
The presser foot device further comprises a link transmission mechanism 85 arranged between the presser bar 82 and the rotating shaft 83 for realizing transmission, as shown in fig. 2, the link transmission mechanism preferably adopts a four-link transmission mechanism, and comprises a swing rod 851, a swing rod 852, a middle rod 853 and a linkage rod 854 which are sequentially connected. One end of the swing rod is provided with a sleeve hole 856 matched with the rotating shaft 83, and the swing rod is fixedly sleeved on the rotating shaft through the matching of the sleeve hole and the rotating shaft. The intermediate lever 853 is a three-eye link, and the rear end of the intermediate lever is rotatably installed. One end of the rocker 852 is hinged to the tail end of the rocker, and the other end of the rocker is hinged to the approximately middle part of the middle rod. One end of the link lever 854 is hinged to the front end of the intermediate lever and the other end is connected to the presser foot lever 82.
In this embodiment, in order to realize the connection between the linkage rod 854 and the presser foot rod 82, a linkage block 857 is fixedly sleeved on each presser foot rod, and the other end of the linkage rod 854 is hinged to the linkage block, so that the connection between the linkage rod and the presser foot rod is realized.
The fixing bases 86 are of split type structure, the fixing bases are provided with a plurality of fixing holes 861 which are matched with the presser foot bars 82 in a one-to-one correspondence mode, the fixing bases are provided with the mounting holes 861 which are matched with the presser foot bars 82, shaft sleeves are fixed in the mounting holes, and the presser foot bars are movably mounted on the corresponding fixing bases through the matching with the shaft sleeves. The fixing base is provided with a cavity 862 for accommodating the linkage block 857, and the linkage block is slidably arranged in the cavity.
In order to realize the limit of each presser bar 82 in the circumferential direction, the fixing base 86 is provided with a limit groove 863 extending along the moving direction of the presser bar 82 and communicating with the accommodating cavity 862. The linkage block 857 is provided with a limiting protrusion 858 matched with the limiting groove, the limiting protrusion is inserted into the limiting groove, and the presser foot bar 82 is limited in the circumferential direction through the cooperation of the limiting protrusion and the limiting groove.
In this embodiment, the bottom end of each presser bar 82 is fixed with a fixing block 811, and one end of the presser bar 81 is fixedly connected to the fixing block by a screw, thereby realizing the connection with the presser bar. The motor 84 and the rotating shaft 83 are driven by a belt wheel mechanism, the belt wheel mechanism comprises a driving wheel 871, a driven wheel 872, a belt 873 and a tensioning wheel 874, the driving wheel is fixedly sleeved on an output shaft 841 of the motor, the driven wheel is fixedly sleeved on the rotating shaft, the belt is sleeved on the driving wheel and the driven wheel, and the tensioning wheel is rotatably arranged outside the belt and is used for keeping the belt in a tight state. In order to realize the installation of the rotating shaft 83, the presser foot device further comprises a support 88 fixedly arranged, the rotating shaft is rotatably arranged on the support in a penetrating manner through a bearing, and the rear end of the middle rod 853 is hinged to the support to realize the rotation installation.
The presser foot device also includes a control board for adjusting the motor 84, which is electrically connected to the control board. Parameters such as start-stop time point, rotation number, rotation speed of the motor are controlled through the control board, adjustment is convenient according to specific operation requirements of the presser foot device, and the whole working requirements of the presser foot device are better met.
As shown in fig. 3 and 4, a first embodiment of the present invention further provides an embroidery machine, which includes a frame 9 and a plurality of machine heads disposed on the frame, wherein the machine heads include a housing 1 and a needle bar frame 2, and the needle bar frame can move back and forth transversely relative to the housing. The needle bar frame is provided with a needle bar 31, the machine shell is provided with a needle bar driver 4 and a transmission shaft 15 for driving the needle bar driver, and the embroidery machine further comprises the presser foot device for the embroidery machine.
The presser foot bar runs completely and independently relative to the needle bar under the action of the motor, and the stroke dead center of the presser foot can be adaptively adjusted according to different fabrics, so that different pressing requirements of different fabrics are met. The load of the transmission shaft for driving the needle bar is lightened, and the speed of the needle bar operation is improved. The motion of loosening the fabric by the presser foot is delayed from the motion of lifting and resetting the needle bar, so that the time of pressing the fabric by the presser foot under a single embroidery motion can be prolonged, and the condition that the fabric is shifted due to synchronous resetting of the presser foot and the needle bar is avoided.
The fixing seat 86 adopts a split structure, the fixing seat is provided with a plurality of presser foot bars 82 in one-to-one correspondence, each fixing seat is arranged on the outer side of the corresponding machine head in the transverse direction, the installation position of the presser foot bars is reasonably arranged by utilizing the space of the transverse side part of the machine head, and the fixing seat and the presser foot bars are prevented from interfering the movement of the needle bar frame.
In this embodiment, the support 88 is fixed to the frame 9, so that the rotating shaft 83 is rotatably disposed on the frame. In order to reasonably arrange the presser foot device and the machine head, the rotating shaft is arranged in parallel with the transmission shaft 15.
As shown in fig. 5, the motor 84 is fixedly mounted on the frame through a bracket 91, and a pair of supporting seats 92 for supporting a driving wheel 871 are further provided on the frame, and the driving wheel is rotatably mounted on the supporting seats through bearings. Still be equipped with the regulation seat 93 that is used for installing take-up pulley 874 in the frame, take-up pulley rotatable mounting is on adjusting the seat, adjusts the seat and passes through the bolt fastening in the frame, is equipped with the bar hole that matches with the bolt on the regulation seat, and when the bolt was unscrewed, the regulation seat is portable to can adjust the position of take-up pulley, make it satisfy the requirement of adjusting the belt elasticity.
In combination with fig. 4 and 6, two needle bar drivers 4 are provided on each casing 1, and in order to make the presser foot device meet the requirement of pressing fabric, two presser feet 81 are provided at the bottom end of each presser bar 82, and two presser feet on the same presser bar correspond to two needle bar drivers on adjacent machine heads, which are close to the presser bar.
Specifically, the presser foot bar 82, the fixing base 86 and the link transmission mechanism 85 are provided on the lateral outer sides of the corresponding housings and between the two adjacent housings 1, and the fixing base is fixed to the housings by screws. In order to avoid interference caused by the installation of the fixing base to the movement of the needle bar driver, the fixing base is provided with a fixing folded edge 864, the fixing folded edge is provided with a through hole 865, the machine shell is provided with a fixing hole corresponding to the through hole, each fixing base is fixed on the lateral outer side of the corresponding machine shell through the matching of the through hole and the fixing hole by adopting bolts, and the fixing base is positioned between the adjacent machine shells. The presser bar 82 penetrating through the fixing seat is arranged between two adjacent housings, the presser foot 81 on the left side of each presser bar corresponds to the needle bar driver 4 on the left side housing, which is close to the presser bar, and the presser foot on the right side corresponds to the needle bar driver on the right side housing, which is close to the presser bar.
In order to make the presser foot device meet the requirements corresponding to the needle bar drivers, the left side of the leftmost casing and the right side of the rightmost casing are respectively provided with a presser bar 82, a fixing seat 86 matched with the presser bar and a connecting rod transmission mechanism 85. In order to mount the leftmost and rightmost holders, two side holders 94 are fixed to the frame 9, the leftmost holder is fixed to the left side holder by bolts, and the rightmost holder is fixed to the right side holder by bolts.
As shown in fig. 7, the needle bar frame 2 is provided with a plurality of needle bars 31, and the plurality of needle bars are arranged on the needle bar frame at intervals in the lateral direction. In this embodiment, the flat embroidery head distance of 55mm is taken as an example, six needle bars are arranged on the needle bar frame, and the six needle bars are respectively a needle bar I311, a needle bar II 312, a needle bar III 313, a needle bar IV 314, a needle bar V315 and a needle bar VI 316. In view of the problem of interference at the time of head mounting, a certain margin needs to be given, and the width W of the single needle bar frame 2 in the lateral direction is set to 107mm. Six needle bars are arranged on the needle bar frame at equal intervals, the center distance L between every two adjacent needle bars is 13.75mm, the distance L1 between the needle bar I311 and the left outer wall of the needle bar frame is 19.125mm, and the distance L2 between the needle bar VI 316 and the right outer wall of the needle bar frame is 19.125mm. The center distance S between the needle bar I and the needle bar V is 55mm, and the two needle bars are combined to perform plain embroidery with the head distance of 55mm. The center distance S between the needle bar II and the needle bar VI is 55mm, and the two are combined to perform plain embroidery with the head distance of 55mm. Needle bars III on adjacent machine heads are combined to perform head-spaced embroidery with the head distance of 110mm, and needle bars IV on adjacent machine heads are combined to perform head-spaced embroidery with the head distance of 110 mm.
In order to meet the requirements of flat embroidery transmission and head embroidery transmission, the center distance between two adjacent needle bar drivers is 55mm, and the center distance between two adjacent presser feet is 55mm.
The upper portion of needle bar frame 2 is equipped with entablature 21, and the lower part of needle bar frame 2 is equipped with down crossbeam 22, is equipped with the hole that supplies each needle bar to pass on entablature and the down crossbeam, and downthehole axle sleeve that is fixed with, each needle bar is installed on the needle bar frame through the cooperation with the axle sleeve, and each needle bar can reciprocate about the needle bar frame, and the bottom of each needle bar all is fixed with the needle 32 that is used for embroidering.
As shown in fig. 8, each needle bar is provided with a driven member 33, and the driven member is provided with a projection 331 projecting toward the needle bar driver 4. In order to keep the driven member stable on the needle bars, needle clips 34 are also provided on each needle bar above the driven member. In order to enable each needle bar to reset better, the upper part of each needle bar is sleeved with a spring 35, the top end of each needle bar is fixed with a limit screw 36, the bottom end of the spring is propped against the upper cross beam 21, and the top end of the spring is propped against the limit screw.
The left and right sides of each casing 1 front portion are respectively equipped with an axial vertical guiding axle 11, and two needle bar drivers 4 on the same machine head are respectively sleeved on two guiding axles. An upper supporting beam 12 is arranged at the front part of the upper end of the machine shell, and a lower supporting beam 13 is arranged at the bottom end of the machine shell. The top of the guide shaft is fixedly inserted on the upper supporting beam, the bottom of the guide shaft is fixedly inserted on the lower supporting beam, and the guide shaft is fixedly installed on the shell. The front end face of the upper supporting beam 12 is fixed with a fixed guide rail 17, the rear side face of the needle bar frame 2 is fixed with a movable guide rail 26 matched with the fixed guide rail, and the fixed guide rail and the movable guide rail adopt a dovetail-shaped guide rail structure. The lower end of the guide shaft is provided with a rolling bearing 14, so that sliding friction between the needle bar frame and the machine shell is converted into rolling friction, and the resistance of the needle bar frame during movement is reduced.
Referring to fig. 9, a groove 41 matching with the protrusion 331 is provided on the front side of the needle bar driver 4, a first cam 51 for driving the needle bar driver to move back and forth along the axial direction of the guide shaft 11 is fixed on the transmission shaft, the first cam is provided in the housing 1, and a large connecting rod 52, a three-eye connecting rod 53 and a small connecting rod 54 for transmitting power are provided between the first cam and the needle bar driver 4.
The transmission shaft 15 is rotatably arranged on each casing through a bearing, an eccentric shaft hole 511 is formed in the first cam, the first cam is eccentrically sleeved on the transmission shaft through the shaft hole, and a ferrule for locking the first cam is fixed on the transmission shaft. The casing is provided with a pin shaft 16 for installing a three-eye connecting rod 53, the rear end of the three-eye connecting rod is sleeved on the pin shaft, one end of a large connecting rod 52 is sleeved on the first cam 51, the other end of the large connecting rod is hinged on the three-eye connecting rod, and the front end of the three-eye connecting rod is provided with a rod shaft 531 which is perpendicular to the length direction of the three-eye connecting rod and extends to two sides. The small link 54 is hinged at one end to the distal end of the shaft and at the other end to the needle driver. When the transmission shaft rotates, the needle bar driver is driven by the first cam, the large connecting rod, the three-eye connecting rod and the small connecting rod to move back and forth along the axial direction of the guide shaft, and the needle bar driver drives the corresponding needle bar to move up and down relative to the needle bar frame through the matching of the groove 41 and the convex block 331.
The top of the needle bar frame 2 is provided with thread taking-up levers 6 corresponding to the needle bars one by one, the top of the needle bar frame is provided with a fixed shaft 23, and the rear ends of the thread taking-up levers are sleeved on the fixed shaft in a rotatable manner. The fixed shaft 23 is provided with a connecting block 24 which is in one-to-one correspondence with each thread take-up lever and is used for driving each thread take-up lever to swing up and down, and the connecting block is provided with a U-shaped open slot 25.
The casing 1 is provided with a take-up frame 71 capable of swinging back and forth, and the front end of the take-up frame is provided with two axial horizontal take-up rollers 72. The upper part of the casing 1 is provided with an intermediate shaft 73 which is axially horizontal and can rotate relative to the casing, and the rear end of the picking frame is fixedly sleeved on the intermediate shaft. When the thread take-up lever does not take up, the connecting block corresponding to the thread take-up lever is in a locking state, and the thread take-up roller cannot drive the thread take-up lever to rotate through the connecting block, so that the thread take-up action cannot be realized. When the thread needs to be taken up, the connecting block is in an unlocking state, and the thread take-up roller can drive the thread take-up lever to swing through the connecting block, so that the thread take-up action is completed.
In order to drive the take-up frame 71 to swing back and forth through the intermediate shaft 73, the machine head further comprises a second cam 74 and a transmission rod 75. The second cam is fixedly sleeved on the transmission shaft 15, a special-shaped transmission groove 741 is formed in the second cam, one end of the transmission rod is fixedly sleeved on the intermediate shaft, a roller 76 matched with the transmission groove is arranged at the other end of the transmission rod, the roller is arranged in the transmission groove, and the other end of the transmission rod is connected to the second cam through the cooperation of the roller and the transmission groove. The second cam drives the transmission rod to move through the cooperation of the transmission groove and the roller, the transmission rod drives the thread take-up rack to swing up and down through the intermediate shaft when in movement, the thread take-up rack drives the corresponding thread take-up lever to swing up and down through the thread take-up roller, and thread take-up is realized during flat embroidery or head-spaced embroidery.
When the embroidery machine performs plain embroidery, the thread take-up lever 6 corresponding to the needle bar I311 and the needle bar V315 is threaded with one color of thread, and the thread take-up lever corresponding to the needle bar II 312 and the needle bar VI 316 is threaded with the other color of thread. In the initial position state, the two thread take-up rollers 72 on the same machine head drive the two thread take-up levers corresponding to the needle bar I311 and the needle bar V315 to swing up and down to take up threads, and the two needle bar drivers 4 on the same machine head respectively drive the needle bar I and the needle bar V to move up and down under the drive of the transmission shaft 15 to realize flat embroidery. The motor 84 drives the rotating shaft 83 to rotate back and forth through the belt wheel mechanism, and the connecting rod transmission mechanism 85 drives the presser foot rod 82 to move up and down when the rotating shaft rotates back and forth, and the presser foot rod drives the presser foot 81 to loosen or compress fabric when moving up and down. When color change is needed, the needle bar frame moves forward L along the X direction shown in FIG. 7, at this time, two needle bar drivers 4 on the same machine head are respectively in transmission fit with the needle bar II and the needle bar VI, two thread take-up rollers 72 are respectively inserted into opening grooves at the rear ends of the thread take-up bars corresponding to the needle bar II and the needle bar VI, and the axial position of the presser foot bar is kept unchanged.
When the embroidery machine performs head-separating embroidery, yarns with one color are threaded on the thread take-up lever corresponding to the needle bar III 313, and yarns with the other color are threaded on the thread take-up lever corresponding to the needle bar IV 314. When one needle bar driver 4 on the same machine head is in transmission fit with the needle bar III, the other needle bar driver and the other five needle bars are spaced in the X direction, namely, the other needle bar driver is in an idle state. One thread take-up roller on the same thread take-up frame is inserted into an open slot 25 at the rear end of the thread take-up lever corresponding to the needle bar III, and the other thread take-up roller and the open slot at the rear end of the other thread take-up lever are spaced in the X direction, namely, the other thread take-up roller is in an idle state. The thread take-up lever swings up and down to take up thread, and the needle bar driver drives the needle bar III to move up and down under the drive of the transmission shaft 15 to realize head-separation embroidery. The motor 84 drives the rotating shaft 83 to rotate back and forth through the belt wheel mechanism, and the connecting rod transmission mechanism 85 drives the presser foot rod 82 to move up and down when the rotating shaft rotates back and forth, and the presser foot rod drives the presser foot 81 to loosen or compress fabric when moving up and down. When the color is required to be changed, the needle bar frame moves forwards L along the X direction, and when one needle bar driver on the same machine head is matched with the needle bar IV in a transmission way, the other needle bar driver and the other five needle bars are spaced in the X direction, namely, the other needle bar driver is in an idle state. One thread take-up roller on the same thread take-up frame is inserted into an open slot 25 at the rear end of the thread take-up lever corresponding to the needle lever IV, and the other thread take-up roller and the open slots at the rear ends of other thread take-up levers are all spaced in the X direction, namely the other thread take-up roller is in an idle state, and the axial position of the presser foot lever is kept unchanged.
It is to be understood that the limiting protrusion 858 in the present embodiment may be independently disposed with respect to the linkage block 857, that is, a limiting protrusion matching the limiting slot 863 is additionally disposed on the presser bar 82.
It will be appreciated that the transmission structure between the transmission shaft and the take-up frame in this embodiment may also be other reasonable structure, and the transmission structure between the transmission shaft and the needle bar driver may also be other structure, and the above-described structure is only used to illustrate the operation of the machine head.
It can be understood that, in order to achieve the purpose of needle skipping, an electromagnet for driving the needle bar driver to rotate circumferentially may be additionally arranged on the machine head in this embodiment. When the electromagnet is electrified, the needle bar driver is driven to circumferentially rotate, so that the grooves and the convex blocks are staggered in the circumferential direction, and transmission separation between the needle bar driver and the needle bar is realized. When the electromagnet is powered off, the needle bar driver reversely rotates and resets.
It can be understood that the embroidery head distance and the head-spacing embroidery head distance of the machine head in this embodiment are not limited to the above description, the number of needle bars on the same needle bar frame, the width of the needle bar frame, and the distance between adjacent needle bars are not limited to the above description, and the width of the needle bar frame, the distance between the needle bars, the embroidery head distance, the head-spacing embroidery head distance, the center distance between two guide shafts on the same machine head, and the center distance between two presser feet at the bottom end of the same presser bar can be reasonably set according to specific embroidery requirements. Each needle bar can be distributed in a non-equidistant mode, and the transmission clutch requirements between the corresponding needle bar and the needle bar driver in each position state are met.
It will be understood that "flat embroidery" in this embodiment means embroidery with a head pitch of 55mm by the head, and "spaced embroidery" means embroidery with a head pitch of 110mm by the head.
It can be understood that the number of presser bars in the presser foot device of this embodiment is reasonably set according to the number of machine heads on the frame, and the number of presser bars at the bottom end of each presser bar is reasonably set according to the number of needle bar drivers on each machine head. When two needle bar drivers are arranged on each machine head, two presser feet are fixed at the bottom end of each presser bar, and if the number of the machine heads is n, the number of the presser bars is n+1, n is more than or equal to 1 and is a natural number. When each machine head is provided with a needle bar driver, the bottom end of each presser bar is fixed with a presser foot, if the number of the machine heads is m, the number of the presser bars is also m, and m is more than or equal to 1 and is a natural number.
It will be appreciated that the correspondence between the rotation direction of the rotating shaft 83 and the movement direction of the presser bar 82 in this embodiment is not limited to the above description, but may be that the presser bar is driven to move downward to press the fabric when the rotating shaft rotates counterclockwise, and the presser bar is driven to move upward to loosen the fabric when the rotating shaft rotates clockwise.
The front side and the front end of each component refer to one side and one end of the component facing the operator during normal operation, and the rear side and the rear end of each component refer to one side and one end of the component facing away from the operator during normal operation.
Example two
As shown in fig. 10, the second embodiment of the present invention is different from the first embodiment in that, when the embroidery machine needs to perform the hole carving, the machine needle 32 at the bottom end of a part of the needle bar is replaced with the hole carving needle 37, and the needle bar becomes the hole carving needle bar 38 for the hole carving.
In order to press the fabric during hole carving, a hole carving presser foot 39 is arranged on the hole carving needle bar. In order to avoid interference between the presser foot 81 at the bottom end of the presser foot bar 82 and the hole presser foot during operation, a recess 391 for avoiding the presser foot is provided at the lower part of the hole presser foot. In the embodiment, the avoiding concave part is formed by bending the lower part of the engraving hole presser foot, and the avoiding concave part is in a right angle shape.
Other structures of the second embodiment are the same as those described in the first embodiment, and will not be described in detail.
Example III
The third embodiment of the present invention is different from the first embodiment in that, in order to improve the synchronism and the bearing capacity of the rotating shaft 83 during the overall rotation, two motors 84 of the presser foot device are provided, and the two motors are respectively connected to two ends of the rotating shaft in a transmission manner, and the two motors synchronously drive the rotating shaft.
Specifically, two motors 84 are fixed on the frame 9 and correspond to two ends of the rotating shaft 83, and the two motors are respectively connected to two ends of the rotating shaft through a belt wheel mechanism in a transmission manner.
When the fabric pressing machine works, the two motors synchronously drive the rotating shafts, so that the synchronism of the rotating shafts during integral rotation is improved, the synchronism of each presser foot bar during back and forth movement is improved, and the requirement of pressing fabric by the presser foot is better met. Meanwhile, the bearing capacity of the rotating shaft can be improved, and the integral operation efficiency of the presser foot device is improved.
Other structures of the third embodiment are the same as those of the first embodiment, and will not be described here again.
In addition to the above preferred embodiments, the present invention has other embodiments, and various changes and modifications may be made by those skilled in the art without departing from the spirit of the invention, which shall fall within the scope of the invention as defined in the appended claims.
Claims (7)
1. The presser foot device for the embroidery machine comprises a presser foot rod with a presser foot at the bottom end, a rotating shaft and a motor for driving the rotating shaft, and is characterized by further comprising a fixed seat, wherein the plurality of presser foot rods are arranged, each presser foot rod is arranged on the fixed seat in a penetrating manner and limited in the circumferential direction, each presser foot rod is connected to the rotating shaft in a transmission manner, and the rotating shaft is driven by the motor to rotate and drives each presser foot rod to move through a transmission mechanism so as to press or loosen fabric;
the fixed seat is provided with a limiting groove extending along the moving direction of the presser foot bar, the presser foot bar is provided with a limiting protrusion matched with the limiting groove, and the limiting protrusion is inserted into the limiting groove to limit the presser foot bar in the circumferential direction;
the presser foot device also comprises a connecting rod transmission mechanism which is arranged between the presser foot rod and the rotating shaft and is used for realizing transmission, the connecting rod transmission mechanism comprises a swing rod, a middle rod and a linkage rod which are sequentially arranged, the swing rod is fixedly sleeved on the rotating shaft, two ends of the swing rod are respectively connected with the end part of the swing rod and the middle rod, one end of the middle rod is rotatably arranged, the other end of the middle rod is connected with the linkage rod, two ends of the linkage rod are respectively connected with the middle rod and the presser foot rod, and the presser foot rod is driven to move back and forth relative to the fixed seat through the swing rod, the middle rod and the linkage rod when the rotating shaft rotates back and forth;
the fixed cover is equipped with the linkage piece on the presser bar, and the one end of linkage piece is connected in the linkage piece realization and is connected with the presser bar, is equipped with spacing arch on the linkage piece, is equipped with along the presser bar direction of movement extension and with spacing protruding assorted spacing groove on the fixing base, spacing arch inserts and locates in the spacing groove so that the circumference of presser bar receives spacingly.
2. The presser foot device of claim 1, wherein the number of the motors is two, the two motors are respectively connected to two ends of the rotating shaft in a transmission manner, and the two motors synchronously drive the rotating shaft to rotate.
3. An embroidery machine comprising a frame and a plurality of machine heads arranged on the frame, wherein the machine heads comprise a machine shell and a needle bar frame, the needle bar frame can transversely move back and forth relative to the machine shell, a needle bar is arranged on the needle bar frame, a needle bar driver and a transmission shaft for driving the needle bar driver are arranged on the machine shell, and the embroidery machine is characterized by further comprising the presser foot device for the embroidery machine according to the claim 1 or 2.
4. The embroidery machine according to claim 3, wherein the plurality of holders are provided and are in one-to-one correspondence with the presser bars, and each holder is provided at a lateral outer side of the machine head.
5. The embroidery machine of claim 4, wherein each machine head is provided with two needle bar drivers, the bottom end of each presser bar is provided with two presser feet, and the two presser feet on the same presser bar correspond to the two needle bar drivers on the adjacent machine head, which are close to the presser bar.
6. The embroidery machine according to claim 3, wherein the needle bar comprises a carved needle bar, a carved presser foot is provided on the carved needle bar, and a recess for avoiding the presser foot is provided on the carved presser foot.
7. The embroidery machine of any one of claims 3-6, wherein the motor is disposed on a frame, and the rotating shaft is rotatably disposed on the frame and is disposed parallel to the transmission shaft.
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|---|---|---|---|
| CN201810141368 | 2018-02-11 | ||
| CN2018101413688 | 2018-02-11 |
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| CN108457020A CN108457020A (en) | 2018-08-28 |
| CN108457020B true CN108457020B (en) | 2023-10-17 |
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| CN201810200614.2A Active CN108457020B (en) | 2018-02-11 | 2018-03-12 | Presser foot device for embroidery machine and embroidery machine |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109537202B (en) * | 2018-10-11 | 2023-06-13 | 浙江信胜科技股份有限公司 | Balance driving embroidery machine head and embroidery machine |
| CN110424110A (en) * | 2019-07-11 | 2019-11-08 | 浙江信胜科技股份有限公司 | It is a kind of to drive stable presser feet driving assembly and embroidery machine |
| CN110396781A (en) * | 2019-07-31 | 2019-11-01 | 周琦 | For expanding the feeding pressure mechanism of shell fabric |
| CN110453398B (en) * | 2019-07-31 | 2020-09-08 | 周琦 | Presser foot control mechanism for expansion type fabric |
| CN110409066A (en) * | 2019-09-03 | 2019-11-05 | 浙江兆山机电有限公司 | A kind of presser foot drive for embroidery machine |
| CN111501235B (en) * | 2020-04-27 | 2023-06-13 | 浙江信胜科技股份有限公司 | Multifunctional combined machine composed of perforating machine and embroidery machine |
| CN111705444B (en) * | 2020-06-28 | 2021-09-24 | 马秀珍 | Independent presser foot transmission mechanism, embroidery machine head transmission mechanism and computerized embroidery machine |
| CN112663235A (en) * | 2020-12-23 | 2021-04-16 | 浙江信胜科技股份有限公司 | Multi-needle presser foot embroidery machine head and embroidery machine |
| CN112663236A (en) * | 2020-12-23 | 2021-04-16 | 浙江信胜科技股份有限公司 | Embroidery machine |
| CN112663234A (en) * | 2020-12-23 | 2021-04-16 | 浙江信胜科技股份有限公司 | Embroidery machine head and embroidery machine |
| CN116103851B (en) * | 2022-12-14 | 2024-05-07 | 浙江兆山机电有限公司 | Embroidery machine presser foot needle bar control device |
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Address after: 311800 No. 537 Huandong Street and East Road, Zhuji City, Shaoxing City, Zhejiang Province Applicant after: Zhejiang Xinsheng Science and Technology Co.,Ltd. Address before: 311800 No. 537 Huandong Street and East Road, Zhuji City, Shaoxing City, Zhejiang Province Applicant before: Zhejiang Xinsheng Sewing Equipment Co.,Ltd. |
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