CN111575934A

CN111575934A - Machine head of sheet ironing machine for multicolor sheet ironing and sheet ironing machine

Info

Publication number: CN111575934A
Application number: CN202010430559.3A
Authority: CN
Inventors: 王海江; 田桂郁; 洪晓峰
Original assignee: Zhejiang Xinsheng Technology Co Ltd
Current assignee: Zhejiang Xinsheng Technology Co Ltd
Priority date: 2020-05-20
Filing date: 2020-05-20
Publication date: 2020-08-25
Anticipated expiration: 2040-05-20
Also published as: CN111575934B

Abstract

The invention discloses a piece stamping machine head for multicolor stamping pieces and a piece stamping machine, wherein the head comprises a needle bar frame and a head shell, the needle bar frame is provided with a row of stamping needle bar assemblies along the width direction, a material belt is conveyed below the needle bar frame, the stamping needle bar assemblies comprise stamping needle bars and stamping needles arranged at the bottoms of the stamping needle bars, and the stamping needles punch off the stamping pieces on the material belt conveyed below; the rear side of the bottom of the needle bar frame is provided with a piece feeding roller wheel assembly, and a piece feeding driving assembly is arranged on the machine head shell; the color changing mechanism comprises a color changing guide rail and a color changing box assembly, the needle bar frame is connected with the color changing guide rail, and the color changing box assembly drives the needle bar frame to move along the color changing guide rail to finish color changing. The invention can realize the sheet feeding requirements of a plurality of material belts in a smaller space, meet the normal color changing and ensure the concentricity requirement with the blanking hole of the hot stamping sheet and the hot stamping sheet in the operation process of the punching needle.

Description

Machine head of sheet ironing machine for multicolor sheet ironing and sheet ironing machine

Technical Field

The invention belongs to the technical field of sheet ironing machines.

Background

In the prior art, the pattern that the piece machine can scald the piece is less, if need increase the pattern, need increase the needle subassembly that dashes on the piece aircraft nose that scalds, will increase the volume of piece machine aircraft nose like this, can't arrange more aircraft noses in limited space.

A needle bar frame type machine head of a piece ironing machine is used for reconstructing a needle bar frame structure of a common flat embroidery machine, and a plurality of punching needle bar assemblies are arranged on the needle bar frame side by side. Compared with the conventional machine head of the piece ironing machine, more punching needle rod assemblies can be arranged in a smaller space, and the pattern of the piece ironing is increased.

The corresponding film feeding device is required to be arranged corresponding to the plurality of punching needle rod assemblies so as to meet the film feeding requirements of the plurality of punching needle rod assemblies, the film feeding device is also required to be arranged in a smaller space, and the normal color changing is realized.

Except that the needle bar frame guides the needle bar of the punching needle, the punching needle usually directly penetrates through a blanking hole of the ironing sheet at present, the ironing sheet is punched from the material belt and is completely separated from the material belt, and the concentricity requirements of the punching needle, the blanking hole of the ironing sheet and the ironing sheet are not easy to guarantee. In the punching process, the punching needle is easy to collide with a blanking hole of the hot stamping sheet, so that the head of the punching needle is bent, and the punching needle needs to be stopped and replaced.

Disclosure of Invention

The invention aims to solve the technical problem of providing a machine head of a piece ironing machine for multicolor ironing pieces, which can meet the requirement of feeding a plurality of material belts in a small space, meet the normal color change and ensure the concentricity with a blanking hole of the ironing piece and the ironing piece in the operation process of a punching needle.

In order to solve the technical problems, the invention adopts the following technical scheme: the machine head of the sheet ironing machine for multicolor ironing sheets comprises a needle bar frame and a machine head shell,

the needle bar frame is provided with a row of punching needle bar assemblies along the width direction, the material belt is conveyed below the needle bar frame, each punching needle bar assembly comprises a punching needle bar and a punching needle arranged at the bottom of the punching needle bar, and the punching needle punches the stamping sheet on the material belt conveyed below;

a piece feeding roller wheel assembly is arranged at the rear side of the bottom of the needle bar frame, a piece feeding driving assembly is arranged on the machine head shell,

the sheet feeding roller assembly comprises a sheet feeding transmission seat, a sheet feeding roller and a sheet feeding driven wheel, wherein the sheet feeding roller and the sheet feeding driven wheel are arranged on the sheet feeding transmission seat, the sheet feeding roller and the sheet feeding driven wheel are equal in number, and the corresponding pair of sheet feeding driven wheels and the sheet feeding roller are matched to convey a material belt;

the sheet feeding driving assembly comprises a fixed support, a driving roller support, a sheet feeding motor and a separation driver, wherein a driving wheel shaft is mounted on the driving roller support, a driving roller is mounted on the driving wheel shaft, the driving roller is in transmission fit with a sheet feeding driven wheel, the sheet feeding motor drives the driving wheel shaft to rotate, and the separation driver drives the driving roller support to move relative to the fixed support so as to separate the driving roller from the sheet feeding driven wheel;

still include the color changing mechanism, the color changing mechanism is including trading the look guide rail and trading the look case subassembly, the needle bar frame is connected with trading the look guide rail, trade the look case subassembly and drive when trading the look the needle bar frame is followed and is traded the look guide rail and removed the completion and trade the look.

Preferably, the sheet feeding motor drives the driving wheel shaft through a synchronous belt transmission mechanism, the synchronous belt transmission mechanism comprises two synchronous belt wheels and a synchronous belt arranged on the two synchronous belt wheels, an output shaft of the sheet feeding motor is connected with one of the synchronous belt wheels, and the other synchronous belt wheel is arranged on the driving wheel shaft.

Preferably, the fixed support is provided with a separation motor, a separation cam is fixed on an output shaft of the separation motor, and the separation cam drives the driving roller support to rotate by taking the output shaft of the sheet feeding motor as a rotation center, so that the driving roller and the sheet feeding driven wheel are separated from transmission contact.

Preferably, a driving roller support is connected between the fixed support and the driving roller support to rotate, so that the driving roller and any one of the sheet feeding driven wheels are attached to a driving spring for transmission.

Preferably, a single piece feeding driven wheel is installed on a driven wheel pin shaft, the single driven wheel pin shaft is installed on a piece feeding driven wheel installation seat, all the piece feeding driven wheel installation seats are hinged to the piece feeding transmission seat through piece feeding driven wheel installation seat shafts, and a row of piece feeding rollers are installed on roller shafts.

Preferably, the single piece feeding driven wheel mounting seat is connected with a torsion spring which enables the piece feeding driven wheel to be always attached to the piece feeding roller.

Preferably, the bottom of the needle bar frame is provided with a bottom cross beam, a punching sheet base is arranged below the needle bar frame, the material belt is conveyed between the punching sheet base and the bottom cross beam, the bottom cross beam is provided with a punching needle guide hole, the punching needle is guided by the punching needle guide hole when punching downwards, and the punching sheet base is provided with a punching sheet blanking hole matched with the punching needle.

Preferably, the punching needle is detachably mounted at the bottom of the punching needle rod, and the punching sheet base is detachably mounted below the bottom cross beam.

Preferably, the bottom surface of the bottom cross beam is a plane, the upper surface of the stamping sheet base is provided with a concave portion and a convex portion formed by the concave portion, the stamping sheet blanking hole is formed in the concave portion, the stamping sheet base is provided with a material strip limiting groove for guiding a material strip to pass through the upper portion of the stamping sheet blanking hole in a centering manner, and the material strip limiting groove is formed in the convex portion.

The invention also provides a sheet ironing machine which comprises the machine head of the sheet ironing machine for multicolor sheet ironing.

The technical scheme adopted by the invention has the following beneficial effects:

1. the sheet feeding roller component adopts a row of sheet feeding driven wheels to be matched with a row of sheet feeding rollers, each sheet punching needle rod component corresponds to a material belt for punching, and the material belt is clamped and conveyed by a pair of sheet feeding driven wheels and the sheet feeding rollers in a matching mode, the sheet feeding driven wheels are not provided with driving sources, but are driven by the driving rollers, and the distance between the adjacent two pairs of sheet feeding driven wheels and the sheet feeding rollers can be controlled to be small, so that the structure is compact.

And the driving roller wheel is only provided with one, the sheet feeding driven wheel is only in transmission fit with one of the driving roller wheels during working, and other sheet feeding driven wheels and the sheet feeding roller wheels do not run, so that a plurality of pairs of sheet feeding driven wheels and sheet feeding roller wheels can be arranged in a limited space, and the sheet feeding requirements of a plurality of (colored) material belts are met. The separation driver drives the driving roller support to move relative to the fixed support during color changing so as to separate the driving roller from the sheet feeding driven wheel, and then the color changing box assembly drives the needle bar frame to move to change the color, so that the color changing requirement is met.

Through the double-guide design of the punch needle guide hole and the stamping piece blanking hole, the concentricity requirement of the punch needle with the stamping piece blanking hole and the stamping piece in the operation process is met, and the phenomenon that the punch needle is collided with the stamping piece blanking hole to cause the bending of the head of the punch needle and the shutdown and replacement are needed is avoided.

2. The synchronous belt transmission mode is adopted, so that the driving roller support and the fixed part on the driving roller support can integrally rotate by taking the output shaft of the sheet feeding motor as a rotation center, the driving roller and any sheet feeding driven wheel are in fit transmission or are in transmission contact, and convenience is provided for color changing.

3. The driving roller wheel is in fit transmission with any one of the sheet feeding driven wheels by adopting the driving spring, the reliability of transmission is ensured, when color changing is needed, the output shaft of the separation motor rotates by a certain angle, the separation cam fixed on the output shaft rotates to be tightly attached to the inner wall of the support of the driving roller wheel, the output shaft of the sheet feeding motor is taken as a rotation center to eject out the output shaft by a certain distance, the sheet feeding driving roller wheel is separated from the sheet feeding driven wheel, then color changing operation is carried out, the needle bar frame is driven by the color changing box assembly to move, the sheet feeding driving roller wheel is changed into a sheet feeding driven wheel matched with the sheet feeding driven wheel, after color changing is completed, the separation motor returns to the original position and returns to the separation cam, and the sheet feeding driving roller wheel is matched with the other.

4. A row of sheet feeding rollers are mounted on a roller shaft together, so that the assembly is convenient. And a single piece feeding driven wheel is hinged to the piece feeding driven wheel mounting seat through a driven wheel pin shaft, all the piece feeding driven wheel mounting seats are hinged to the piece feeding driven wheel mounting seat shaft, and each piece feeding driven wheel mounting seat is connected with a torsion spring which enables the piece feeding driven wheel to be tightly attached to the piece feeding roller wheel, so that each piece feeding driven wheel can be guaranteed to be tightly attached to the corresponding piece feeding roller wheel to be matched with the piece feeding roller wheel to convey the material belt.

5. Through changing different towards needle and towards the piece base, make towards the needle and scald the piece blanking hole cooperation and go out the piece that scalds of different specifications, conveniently alternate and scald the piece specification, improve transform efficiency, reduce down time.

6. The punching sheet base is provided with a material belt limiting groove for guiding the material belt to be centered, and the material belt is prevented from shifting the position of the blanking hole of the hot stamping sheet and punching the hot stamping sheet with unqualified shape.

The following detailed description of the present invention will be provided in conjunction with the accompanying drawings.

Drawings

The invention is further described with reference to the accompanying drawings and the detailed description below:

FIG. 1 is a side view of a head assembly of the sheeting press of the present invention;

FIG. 2 is a schematic front view of a head assembly of the sheeting ironing machine of the present invention;

FIG. 3 is a schematic view of the back side of the head assembly of the sheeting ironing machine of the present invention (partially omitted);

FIG. 4 is an exploded view of the frame device of the needle bar for ironing sheet and the roller assembly for feeding sheet;

FIG. 5 is a schematic view of the combination of the needle bar and the punch needle;

FIG. 6 is a schematic structural view of a base of the punch;

FIG. 7 is a schematic view of the cooperation of the punch pin with the punch pin guide sleeve and the punching die sleeve in the punching process;

FIG. 8 is an exploded view of the frame head housing and the film feeding driving assembly;

fig. 9 is a schematic diagram of a material tape conveying structure;

in the figure:

1-a needle bar frame device for the hot piece; 1001-material belt; 11-needle bar frame; 111-an upper beam; 112-middle cross beam; 113-bottom beam; 12-a plunger rod assembly; 121-punch needle rod; 122-punching needle; 1221-punching the needle head; 1222-punch needle standard; 123-bottom dead center; 124-top dead center; 13-punching needle guide sleeve; 14-punching die sleeve; 15-punching sheet base; 151-material belt limiting groove; 152-a fixation hole; 16-ironing upper panel; 17-ironing the lower panel; 18-threading in the ironing sheet; 19-passing the lower line of the ironing sheet; 100-front steering wheel axle; 101-front guide wheel; 102-a front steering wheel axle mounting plate; 114-needle bar guide plate; 115-needle bar frame lower guide rail;

2-a sheet feeding driving assembly; 21-a synchronous pulley; 22-a drive axle; 23-driving roller support; 231-bearing mounting holes; 24-rolling bearings; 25-disengaging the cam; 26-driving rollers; 27-a fixed support; 28-a sheet feeding motor; 29-a disengagement motor;

3-a sheet feeding roller assembly; 31-a strap feeding transmission seat; 32-rear guide axle; 33-rear guide wheels; 34-a roller shaft; 35-feeding driven wheel mounting base shaft; 36-a sheet feeding roller; 37-sheet feeding driven wheel mounting seat; 38-sheet feeding driven wheel mounting seat; 39-deep groove ball bearing;

4-a handpiece shell; 41-needle bar drive assembly; 42-color changing guide rail assembly.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Words such as "upper," "lower," "inner," "outer," "left," "right," and the like, which indicate orientation or positional relationship, are based only on the orientation or positional relationship shown in the drawings and are merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices/elements must have a particular orientation or be constructed and operated in a particular orientation and, therefore, should not be taken as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It will be appreciated by those skilled in the art that features from the examples and embodiments described below may be combined with each other without conflict.

Referring to fig. 1 to 9, a needle bar frame type embroidery machine head improves an existing embroidery machine head to realize an ironing function, and includes an ironing needle bar frame device 1, a feeding driving assembly 2, a feeding roller assembly 3 and a machine head shell 4.

Referring to fig. 4 and 5, the film-ironing bar holder device 1 includes a bar holder 11 and a plurality of punch bar assemblies 12 arranged along the width direction of the bar holder 11. Referring to fig. 5, the punch needle bar assembly 12 includes a punch needle bar 121 and a punch needle 122 mounted at the bottom of the punch needle bar 121, a tape 1001 is conveyed below a needle bar frame 11, and a punch blade (material sheet) on the tape 1001 conveyed below is punched by the punch needle 122.

The needle bar frame 11 can refer to the existing common flat embroidery machine, and the needle bar frame 1 is provided with an upper beam 111, a middle beam 112 and a bottom beam 113 from top to bottom. The upper beam 111 and the middle beam 112 are provided with needle bar guide holes matched with the needle bars 121. The needle bar 121 is fixedly connected with a lower dead point 123 and an upper dead point 124.

Furthermore, the present invention employs a conventional needle bar driving assembly 41 to drive the needle bar assembly 12, the needle bar driving assembly 41 being mounted to the head housing, the needle bar driving assembly 41 including a needle bar driver acting on the needle bar assembly 12 through the lower dead point 123. The needle bar 121 is connected with a return spring which can realize the upward return of the needle bar assembly 12 after the needle bar driver is separated from the lower dead point 123, the upper end of the return spring is abutted against the lower dead point 123, and the lower end of the return spring is abutted against the middle cross beam 112. Other structures and working principles are not described in detail herein, and reference can be made to a needle bar driving manner of a conventional embroidery machine. The flat embroidery machine head driving mode of the conventional embroidery machine is more suitable for the design research and development of future composite machine types.

In order to guide the punch pin 122 to punch downwards, the bottom cross beam 113 is provided with a punch pin guide sleeve 13 matched with the punch pin 122, a punch pin guide hole is formed in the punch pin guide sleeve 13, and the bottom cross beam 113 is provided with a mounting hole in which the punch pin guide sleeve 13 is mounted. Of course, it will be understood by those skilled in the art that the punch guide holes may also be provided directly on the base beam.

Referring to fig. 4 and 6, in order to realize stamping and blanking, the machine head further includes a stamping base 15 disposed below the needle bar frame 11, the material belt 1001 is conveyed between the stamping base 15 and the bottom beam 113, and the stamping base 15 is provided with stamping and blanking holes matched with the stamping needles 122. When the stamping sheet is not punched down, the stamping sheet and the material belt are in an integral structure, and when the stamping needle 122 downwards penetrates through a stamping sheet blanking hole, the stamping sheet is punched down from the material belt 1001 and is completely separated from the material belt. It will be appreciated by those skilled in the art that the punch base 15 may be integrated with the needle bar holder 11, such as by integrating the punch base structure on the bottom beam 113.

In order to punch the iron sheets with different specifications, the punching needle is arranged at the bottom of the needle rod 121 in a detachable mode according to the replacement mode of the plain embroidery needle, each punching needle 122 corresponds to the iron sheet punching sheet with different sizes, and the punching needle 122 can be replaced according to the required iron sheet specification. In this embodiment, the bottom of the punch needle rod 121 is provided with a mounting hole, and the punch needle 122 is inserted into the mounting hole and is locked and fixed by a radial locking screw, so that the punch needle can be conveniently replaced and maintained in the later period.

After the punching pin 122 is replaced, if the size of the stamping blanking hole is not changed, blanking is affected, so that in order to smoothly blank, the stamping sheet base 15 is detachably mounted on the bottom cross beam 113 at the bottom of the needle bar frame, and different punching pins 122 and stamping sheet bases 15 are replaced, so that the punching pins 122 and the stamping blanking holes are matched to punch stamping sheets with different specifications.

In one embodiment, the bottom surface of the bottom beam 113 at the bottom of the needle bar frame is a plane, the upper surface of the punching sheet base 15 is provided with a concave portion and a convex portion formed by the concave portion, and the punching sheet blanking hole is formed in the concave portion. In this embodiment, the concave portion is provided with a middle position on the rear side of the upper surface of the punching sheet base 15, and the convex portion is in a U shape and semi-surrounds the concave portion.

The punching sheet base 15 is provided with a material belt limiting groove 151 for guiding a material belt 1001 to be centered through an ironing sheet blanking hole, and the material belt limiting groove 151 is arranged on a convex portion. Here, the material tape limiting groove 151 and the stamping piece blanking hole are arranged in one-to-one correspondence, the width center line of the material tape 1001 is completely or substantially coincident with the center line of the material tape limiting groove 151 and the radial center line of the stamping piece blanking hole, and the radial center line of the stamping piece is also completely or substantially coincident with the radial center line of the stamping piece blanking hole. Of course, those skilled in the art will appreciate that the above-described structures on the bottom beam 113 and the punch base 15 may be interchanged as a variation.

In order to facilitate the disassembly of the punching sheet base 15 for maintenance and replacement, the punching sheet base 15 is provided with a fixing hole 152, the fixing hole 152 is connected with a fastening piece, the punching sheet base 15 is fixed on the needle bar frame 11 through the fastening piece, and the fastening piece can be a screw. Here, the fixing holes 152 are provided in the convex portions, and the fixing holes 152 may be provided in both left and right convex portions of the punch base 15 and in a portion of the convex portion between the two stopper grooves 151.

In addition, a punching die sleeve 14 is installed on the punching base 15, and an ironing blanking hole is formed in the punching die sleeve 14. Of course, it can be understood by those skilled in the art that the stamping blanking hole can be directly formed on the stamping base 15. The concentric requirement of the punching needle in the operation process is ensured through the double-guide design of the punching needle guide sleeve 13 and the punching die sleeve 14. If the punching needle guide sleeve 13 is not arranged, the punching needle 122 is easy to collide with the punching die sleeve 14 in the punching process, the head of the punching needle is bent, shutdown and replacement are needed, the cost of one punching needle is high, and on the one hand, the beneficial effect of the double-guide design is realized.

In order to match the stamping blanking hole with the stamping needle 122, when the specifications of the stamping and the stamping needle 122 are changed, the stamping base 15 is preset with different specifications corresponding to different stamping die sleeves 14 and corresponding stamping blanking holes. Therefore, after the punching pin 122 is replaced, the punching sheet base 15 can be directly replaced, and the replaced material belt 1001 is also convenient to pass between the punching sheet base 15 and the bottom cross beam 113.

Referring to the prior art punching pin structure, as shown in fig. 7, the punching pin 122 has a stepped shaft structure, in which the lowest portion is a punching pin head 1221, a punching pin standard portion 1222 is disposed above the punching pin head 1221, and the punching pin standard portion 1222 has a standard size. In the punching process, the punching needle 1221 is matched with a punching sheet blanking hole formed in the punching die sleeve 14, and the punching needle standard portion 1222 is matched with a punching needle guide hole formed in the punching needle guide sleeve 13. Even if the gauge of the punch pin 122 changes, the punch pin head 1221 changes, and the diameter of the punch pin standard portion 1222 does not change. Therefore, even if the punch pin 122 is replaced, the guide of the punch pin 122 by the punch pin guide hole arranged on the punch pin guide sleeve 13 can be still ensured.

The punching needle guide sleeve 13 and the punching die sleeve 14 are arranged in the mounting hole in an interference fit mode and are not normally replaced. In order to realize long-term use, the punching needle guide sleeve 13 is made of wear-resistant alloy, and the punching sheet die sleeve 14 is also made of wear-resistant alloy and can be processed by adopting the existing mature wear-resistant alloy material. Of course, it is not excluded that the punching needle guide sleeve 13 and the punching sheet die sleeve 14 can be replaced simultaneously or only the punching needle guide sleeve 13 and the punching sheet die sleeve 14 can be replaced when the abrasion is large or the size of the punching needle is replaced.

Further, a front guide wheel shaft 100 is arranged in front of the punching sheet base 15, and the front guide wheel shaft 100 is provided with a front guide wheel 101 which guides the material belt 1001 to enter the guide groove corresponding to each needle bar. The front guide wheel shaft 100 is mounted at the left and right ends thereof on the front guide wheel shaft mounting plate 102, and the front guide wheel shaft mounting plate 102 can be fixed in front of the bottom of the iron sheet needle bar frame by screws. Deep groove ball bearings are pressed on the left side and the right side of the front guide wheel 101 to be matched with the front guide wheel shaft 100, and smooth rotation is achieved. A spacer may be disposed between two adjacent front guide wheels 101 for separation.

As an accessory of the needle bar frame, referring to fig. 2, the upper ironing plate panel 16 and the lower ironing plate panel 17 are mounted on the front side of the needle bar frame 11 to form an integral shielding panel, so as to shield the front side of the needle bar frame 11, thereby not only protecting the punching needle bar, but also avoiding accidental injury. The front of the needle bar frame 11 is provided with an ironing sheet middle passing line 18 and an ironing sheet lower passing line 19 which are arranged in parallel up and down, and the ironing sheet middle passing line 18 and the ironing sheet lower passing line 19 are respectively provided with an ironing sheet passing line hole for a material belt to pass through corresponding to each needle bar. The material belt enters between the needle bar frame bottom beam 113 and the punching sheet base 15 through the diversion of the thread passing 18 in the ironing sheet and the thread passing 19 below the ironing sheet and the guidance of the front guide wheel 101.

In addition, a hot stamping needle bar guide plate 114 is installed at the rear of the needle bar frame 11, and the hot stamping needle bar guide plate 114 is provided with a guide groove matched with a guide projection on the lower dead point 123 of the punching needle bar to restrain the up-and-down operation of the punching needle bar assembly 12.

Referring to fig. 1, 3 and 8, the needle bar frame 11 is horizontally slidably mounted on the head housing 4, a color changing guide rail assembly 42 is disposed between the needle bar frame 11 and the head housing 4 to guide and constrain the left and right sliding of the needle bar frame 1, and the color changing box assembly drives the needle bar frame 11 to slide left and right along the color changing guide rail assembly 42 to change the color. The color changing principle is the same as that of a flat embroidery machine, so that the corresponding structure on the embroidery machine can be referred.

Because the needle bar frame type piece ironing machine head is adopted, each punching needle bar component can punch the ironing pieces with different colors, and the number of the punching needle bar components can be increased in a limited space, so that the design and color of the ironing pieces can be increased. Thus, compared to the prior art structure, firstly, a lot of space is saved in the structure. Meanwhile, the super multicolor ironing piece is supported, the color is more, and the contained patterns can be more, so that the number of times of needle changing is reduced, the time-saving effect is achieved, and the working efficiency is improved from the other aspect. And the punching needle and the punching sheet base can be correspondingly replaced to form different sizes of the ironing sheets.

Of course, because the needle bar frame type piece ironing machine head is adopted, a pair of roller conveying material belts 1001 needs to be arranged corresponding to each punching needle bar assembly, and meanwhile, because the head distance of the needle bar frame type piece ironing machine head is small, and more punching needle bar assemblies are arranged, a plurality of pairs of rollers need to be arranged side by side in a small width space. Referring to fig. 3 and 4, the sheet feeding roller assembly 3 includes a sheet feeding transmission seat 31, and a sheet feeding driven wheel 38 and a sheet feeding roller 36 which are correspondingly installed on the sheet feeding transmission seat 31, the sheet feeding driven wheel 38 and the sheet feeding roller 36 are in close fit, and the sheet material tape 1001 is clamped and conveyed by the sheet feeding driven wheel 38 and the sheet feeding roller 36, wherein the sheet feeding driven wheel 38 and the sheet feeding roller 36 are the same in number and correspond to each other.

Specifically, the sheet feeding driven wheel 38 is mounted on a driven wheel pin shaft, deep groove ball bearings 39 are pressed on two sides of the sheet feeding driven wheel 38, and the driven wheel pin shaft is mounted on the sheet feeding driven wheel mounting seat 37.

In this embodiment, a single driven blade feeding wheel 38 is mounted on a driven wheel pin, the single driven wheel pin is mounted on a driven blade feeding wheel mounting seat 37, and all driven blade feeding wheel mounting seats 37 are hinged to the driven blade feeding transmission seat 31. In order to ensure that the sheet feeding follower wheels 38 and the sheet feeding roller wheels 36 are tightly attached, each sheet feeding follower wheel mounting seat 37 is connected with a torsion spring which enables the sheet feeding follower wheels 38 to be tightly attached to the sheet feeding roller wheels 36 all the time, so that each sheet feeding follower wheel 38 can be tightly attached to the corresponding sheet feeding roller wheel 36.

As a conventional variant, the two ends of the pin shaft of the single driven wheel are connected with the chutes on the corresponding sheet feeding driven wheel mounting seats 37 directly or through sliding blocks in a sliding manner, and the single sheet feeding driven wheel 38 is pulled by a spring to be tightly attached to the corresponding sheet feeding roller wheel 36. All of the web-feeding driven wheel mounting seats 37 may be fixed to the web-feeding transmission seat 31 at this time. Or, all the sheet feeding driven wheels 38 can be mounted on the same driven wheel pin shaft through rolling bearings, the two ends of the driven wheel pin shaft are directly or slidably connected to the chutes on the sheet feeding transmission seat 31 through sliding blocks, and all the sheet feeding driven wheels 38 are pulled by springs to be attached to the corresponding sheet feeding rollers 36.

Further, all the sheet feeding driven wheel mounting seats 37 are hinged to the same sheet feeding driven wheel mounting seat shaft 35. The film feeding driven wheel mounting base shaft 35 is mounted on the film feeding transmission base 31. The film feeding driven wheel mounting base 37 comprises a left parallel side edge, a right parallel side edge and a connecting beam for connecting the middle parts of the two side edge, the film feeding driven wheel mounting base shaft 35 is connected to the front parts of the left parallel side edge and the right parallel side edge, and the driven wheel is connected to the rear parts of the left parallel side edge and the right parallel side edge through pin shafts.

In a convenient embodiment, the sheet feeding roller 36 is mounted on the same roller shaft 34, and the roller shaft 34 is mounted on the sheet feeding transmission seat 31. Deep groove ball bearings 39 are pressed on the left side and the right side of the sheet feeding roller 36 to be matched with the roller shaft 34, and smooth rotation is achieved. A spacer can be arranged between two adjacent sheet feeding rollers 36 for separation.

In addition, the film feeding transmission seat 31 is further provided with a rear guide wheel shaft 32 in parallel in front of the roller wheel shaft 34, and a row of rear guide wheels 33 are mounted on the rear guide wheel shaft 32. Deep groove ball bearings 39 are pressed on the left side and the right side of the rear guide wheel 33 and matched with the rear guide wheel shaft 32, and smooth rotation is achieved. A spacer may be provided between two adjacent rear guide wheels 33 to separate them.

The sheet feeding roller 36, the front guide wheel 101 and the rear guide wheel 33 are all provided with wheel grooves matched with the material belt. Moreover, a convex cylinder is arranged on the outer cylindrical surface of the sheet feeding driven wheel 38 and is meshed with a wheel groove on the sheet feeding roller 36. The material belt 1001 is prevented from shifting in the conveying process by the limiting of the wheel groove.

The film feeding roller assembly 3 is mounted on the rear side of the bottom of the needle bar frame 11, and specifically, the film feeding transmission seat 31 is fixed on the needle bar frame 11. The blade feeding transmission seat 31 comprises a front panel and side panels protruding backwards from the left side and the right side of the front panel, the two ends of the blade feeding driven wheel mounting seat shaft 35, the roller shaft 34 and the rear guide roller shaft 32 are supported in the side panel mounting holes on the left side and the right side, and locking screw holes are radially arranged on the side panels corresponding to the fixing holes and connected with the locking screws. The sheet feeding driven wheel mounting base shaft 35, the roller shaft 34 and the rear guide wheel shaft 32 are correspondingly provided with fastening planes, and the fastening planes are fixed by being pressed against by locking screws. The left side and the right side of the front panel respectively protrude out of the left side panel and the right side panel, are provided with fixing holes and are fixed on the needle bar frame 11 by screws.

The sheet feeding driving assembly 2 is configured to drive the sheet feeding driven wheel 38, i.e., one of a pair of sheet feeding driven wheels 38, so that the pair of sheet feeding driven wheels 38 and the sheet feeding roller 36 cooperate to feed the tape 1001. Referring to fig. 8, the sheet feeding driving assembly 2 includes a fixed support 27 and a driving roller support 23, the driving roller support 23 is provided with a driving roller shaft 22, the driving roller shaft 22 is provided with a driving roller 26, and the fixed support 27 is provided with a sheet feeding motor 28 which drives the driving roller shaft 22 to rotate through an intermediate transmission mechanism. The sheet feeding motor 28 transmits power through a synchronous belt transmission mechanism, and sequentially drives the driving roller 26, the sheet feeding driven wheel 38 and the sheet feeding roller 36 to rotate, so as to drive the material belt 1001 to convey.

Specifically, the sheet feeding motor 28 drives the driving wheel shaft 22 through a synchronous belt transmission mechanism, the synchronous belt transmission mechanism comprises two synchronous belt wheels 21 and a synchronous belt installed on the two synchronous belt wheels, an output shaft of the sheet feeding motor 28 is connected with one of the synchronous belt wheels, and the other synchronous belt wheel is installed on the driving wheel shaft 22. In order to make the other synchronous pulley drive the driving roller 26 to rotate, the other synchronous pulley is connected with the driving roller 26 through a limit pin. Wherein, driving roller 26 and synchronous pulley connecting end face encircle its driving roller shaft hole and are equipped with the bulge loop, another synchronous pulley and driving roller 26 connecting end face encircle its driving roller shaft hole and be equipped with the concave ring, bulge loop embedding concave ring. At least one limit pin hole, for example 2 or 3, is uniformly distributed on the other synchronous pulley and the driving roller 26 along the circumferential direction, and the limit pin hole is connected with the limit pin.

Since there is only one drive roller wheel 26, it can drive only one of a sheet discharge follower 38. Therefore, if color changing is needed, the driving roller support 23 is moved to make the driving roller 26 fit with or separate from the driven roller 38, and then the color changing box assembly drives the needle bar frame 11 to slide left and right along the color changing guide rail assembly 42 to change color.

In the present embodiment, a synchronous belt transmission manner is adopted, so that the driving roller support 23 and the upper fixing component thereof can integrally rotate by using the output shaft of the sheet feeding motor 28 as a rotation center, so that the driving roller 26 and any one of the sheet feeding driven wheels 38 are in fit transmission or are in transmission contact, and convenience is provided for color changing.

In order to realize that the driving roller support 23 and the fixed part can integrally rotate by taking the output shaft of the sheet feeding motor 28 as a rotation center. The fixed support 27 is provided with a disengaging motor 29, an output shaft of the disengaging motor 29 is fixed with a disengaging cam 25, and when color changing is needed, the driving roller support 23 is driven by the disengaging cam 25 to rotate by taking the output shaft of the sheet feeding motor 28 as a rotation center, so that the driving roller 26 is disengaged from the sheet feeding driven wheel 38 for transmission contact.

In order to ensure that the driving roller 26 is in fit transmission with any one of the sheet feeding driven wheels 38, a driving roller support is connected between the fixed support and the driving roller support to rotate, so that the driving roller is in fit transmission with any one of the sheet feeding driven wheels. When the machine starts to operate, the driving roller 26 is tightly attached to one of the sheet feeding driven wheels 38 due to the acting force of the driving spring, and the sheet feeding motor 28 transmits power to the driving roller 26, so that the sheet feeding driven wheel 38 and the sheet feeding roller 36 are matched to pull the material belt.

When color changing is needed, the output shaft of the disengaging motor 29 rotates for a certain angle, so that the disengaging cam 25 fixed on the disengaging motor rotates to be tightly attached to the inner wall of the driving roller support 23, the output shaft of the sheet feeding motor 28 is taken as a rotating center, the output shaft is ejected for a certain distance, the sheet feeding driving roller 26 is separated from the sheet feeding driven wheel 38, and then color changing operation is carried out; after the color change is completed, the disengaging motor 29 is rotated back to the original position under the action of the driving spring.

Specifically, the fixing support 27 includes a fixing plate, two parallel motor mounting plates are vertically connected to the fixing plate, and the sheet feeding motor 28 and the separation motor 29 are respectively mounted on the motor mounting plates on two sides. The driving roller wheel support 23 comprises a U-shaped part, two groups of bearing mounting holes are formed in two side edges of the U-shaped part, rolling bearings 24 are mounted in the bearing mounting holes, one group of rolling bearings are matched with the driving wheel shaft, and the other group of rolling bearings are matched with an output shaft of the sheet feeding motor. The U-shaped portion is provided with lugs at the corners of the open end, the lugs being provided with bearing mounting holes 231 for seating the rolling bearings 24.

The sheet feeding driving assembly 2 is integrally fixed on the rear side inclined plane at the bottom of the machine head shell, and particularly, the fixing plate can be connected with the rear side inclined plane at the bottom of the machine head shell through screws.

As a variation of the above-described sheet feeding driving assembly 2, it will be understood by those skilled in the art that the sheet feeding motor 28 may also be mounted on the driving roller support 23, and may drive the driving wheel shaft 22 through a synchronous belt transmission mechanism or a gear transmission mechanism, as well as other conventional transmission methods. Meanwhile, the disengaging motor 29 can be installed on the fixed support 27, and directly use its output shaft or disengaging cam, or drive the driving roller support 23 to rotate relative to the fixed support 27 by other means. Or the driving roller support 23 may be slidably connected to the fixed support 27, and the driving roller support 23 linearly moves relative to the fixed support 27 by a linear driving method.

As will be appreciated by those skilled in the art, the sheet feeding drive roller 26 and the sheet feeding driven roller 38 can be frictionally driven in a snug manner, as described above, so that the driving contact and disengagement can be easily switched. Of course, it is not excluded to use a gear mesh transmission, preferably a friction transmission. The gear transmission mode may have some problems, and mainly the piece-feeding driven gear can rotate due to the vibration of the machine operation, so that the piece-feeding driving gear and the piece-feeding driven gear are staggered and cannot be meshed smoothly in the color changing process.

Referring to fig. 9, the principle of the feeding and punching of the material tape 1001 is as follows: the sheet feeding driven wheel 38 and the sheet feeding roller wheel 36 are matched to pull the tape 1001, after the tape 1001 is discharged from the tape reel, the tape passes through the thread passing hole in the iron sheet middle thread 18 and the thread passing hole in the iron sheet lower thread 19 from top to bottom, is guided by the front guide wheel 101 to be fed into the tape limiting groove 151 between the needle bar frame bottom beam 113 and the punching sheet base 15, passes through the rear guide wheel 33, and then passes between the sheet feeding driven wheel 38 and the sheet feeding roller wheel 36. Furthermore, the waste material can freely fall on the ground by gravity after passing between the sheet feeding driven wheel 38 and the sheet feeding roller 36 without providing a collecting tray, and of course, a waste material collecting box can be provided on the ground to collect the waste material. When the material tape 1001 passes through the position between the needle bar frame bottom beam 113 and the punching sheet base 15 corresponding to the punching sheet blanking hole, the needle bar driving assembly 41 drives the punching needle bar assembly 12 to reciprocate up and down, and the punching sheet with the corresponding specification is punched through the punching needle 122.

Compared with the prior art, the sheet feeding driving assembly 2 and the sheet feeding roller assembly 3 have the advantages that the sheet feeding driven wheel 38 and the sheet feeding roller 36 are easy to separate, the sheet feeding driving roller 26 and the sheet feeding driven wheel 38 are easy to separate, and the material belt can be easily threaded.

Example two

A piece ironing machine, includes the needle bar frame formula piece ironing machine aircraft nose in the above-mentioned embodiment one. The piece ironing machine can be provided with a plurality of piece ironing machine heads, each piece ironing machine head can be selected according to various piece ironing specifications, and the diversity of pattern manufacturing is greatly enriched.

It can be understood by those skilled in the art that the invention provides a piece ironing machine, which can include some or all of the structures in the first embodiment or any combination thereof.

While the invention has been described with reference to specific embodiments, it will be understood by those skilled in the art that the invention is not limited thereto, and may be embodied in other forms without departing from the spirit or essential characteristics thereof. Any modification which does not depart from the functional and structural principles of the present invention is intended to be included within the scope of the claims.

Claims

1. Polychrome is scalded piece and is used scalds piece machine aircraft nose, its characterized in that: comprises a needle bar frame and a machine head shell,

2. An ironing machine head for multicolor ironings according to claim 1, characterized in that: the sheet feeding motor drives the driving wheel shaft through a synchronous belt transmission mechanism, the synchronous belt transmission mechanism comprises two synchronous belt wheels and a synchronous belt arranged on the two synchronous belt wheels, an output shaft of the sheet feeding motor is connected with one of the synchronous belt wheels, and the other synchronous belt wheel is arranged on the driving wheel shaft.

3. An ironing machine head for multicolor ironings according to claim 2, characterized in that: the fixed support is provided with a separation motor, a separation cam is fixed on an output shaft of the separation motor, and the drive roller support is driven by the separation cam to rotate by taking the output shaft of the sheet feeding motor as a rotation center during color changing, so that the drive roller and the sheet feeding driven wheel are separated from transmission contact.

4. An iron head for a multicolor iron according to claim 3, characterized in that: and a driving roller support is connected between the fixed support and the driving roller support and rotates, so that the driving roller and any one of the sheet feeding driven wheels are attached to a driving spring for transmission.

5. An ironing machine head for multicolor ironings according to claim 1, characterized in that: the single sheet feeding driven wheel is arranged on a driven wheel pin shaft, the single driven wheel pin shaft is arranged on a sheet feeding driven wheel mounting seat, all sheet feeding driven wheel mounting seats are hinged to the sheet feeding transmission seat through sheet feeding driven wheel mounting seat shafts, and a sheet feeding roller wheel is arranged on a roller wheel shaft.

6. An iron head for a multicolor iron according to claim 5, characterized in that: the single piece-feeding driven wheel mounting seat is connected with a torsion spring which enables the piece-feeding driven wheel to be always attached to the piece-feeding roller wheel.

7. An ironing machine head for multicolor ironings according to claim 1, characterized in that: the punching machine is characterized in that a bottom cross beam is arranged at the bottom of the needle bar frame, a punching sheet base is arranged below the needle bar frame, a material belt is conveyed between the punching sheet base and the bottom cross beam, a punching needle guide hole is formed in the bottom cross beam and is guided by the punching needle guide hole when the punching needle punches downwards, and a punching sheet blanking hole matched with the punching needle is formed in the punching sheet base.

8. An iron head for a multicolor iron according to claim 7, characterized in that: the punching needle is detachably arranged at the bottom of a needle rod of the punching needle, and the punching sheet base is detachably arranged below the bottom cross beam.

9. An iron head for a multicolor iron according to claim 8, characterized in that: the stamping structure comprises a stamping base and a bottom cross beam, and is characterized in that the bottom surface of the bottom cross beam is a plane, a concave portion and a convex portion formed by the concave portion are arranged on the upper surface of the stamping base, an ironing blanking hole is formed in the concave portion, a material strip limiting groove for guiding a material strip to be centered above the ironing blanking hole is formed in the stamping base, and the material strip limiting groove is formed in the convex portion.

10. A piece ironing machine, which is characterized in that: an ironing machine head for multicolor ironings according to any one of claims 1 to 9.