CN212294014U

CN212294014U - Stamping machine punching device capable of realizing stamping needle buffering and stamping machine

Info

Publication number: CN212294014U
Application number: CN202021402957.6U
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: 2020-07-16
Filing date: 2020-07-16
Publication date: 2021-01-05
Anticipated expiration: 2030-07-16

Abstract

The utility model discloses a stamping machine punching device and stamping machine capable of realizing punching needle buffering, which comprises a punching mechanism and a punching needle buffering mechanism, wherein the punching mechanism comprises a punching needle mounting seat provided with a punching needle and a punching needle base provided with a punching needle guide seat, the punching needle guide seat is provided with a blanking hole which is communicated from top to bottom, and the punching needle guide seat is provided with a sheet passing groove which is communicated from front to back and passes through the blanking hole; the punching needle buffer mechanism comprises a buffer base fixing sleeve and a buffer base, the buffer base fixing sleeve is arranged on the bedplate, and the buffer base fixing sleeve is provided with an adjusting hole which is communicated up and down; the buffer base is provided with an adjusting shaft, the adjusting shaft is provided with a buffer hole, and the adjusting shaft is in threaded connection with the adjusting hole. The utility model discloses the drift of the needle that dashes that appears before can effectively avoiding leads to dashing the phenomenon that the needle crashed or buckled when the machine function to greatly reduced the requirement to the platen.

Description

Stamping machine punching device capable of realizing stamping needle buffering and stamping machine

Technical Field

The utility model belongs to the technical field of the embroidery machine, especially, relate to scald mascerating machine.

Background

The punching mechanism of the piece ironing machine is used for punching a material piece on a material belt through the matching of a punching needle and a blanking hole on a punching needle guide seat, wherein the punching needle guide seat is provided with a piece passing groove which is communicated from front to back and passes through the blanking hole, and the material belt is conveyed through the piece passing groove. At present, the phenomenon that the punching needle is broken or bent due to deviation (deviation from a blanking hole) when a machine operates occurs.

The platen (frame) structure used by the existing sheet ironing machine is characterized in that a layer of PVC (polyvinyl chloride) plate is fixed on a frame of the frame, and a specially-made rubber plate is attached to the frame so as to form a proper pattern in the sheet ironing machine punching process, and the sheet ironing process has very high requirements on the platen. Because the height of the frame can directly influence the depth of the pattern on the sticker, too low a height can cause the punched sheet not to be stuck on the sticker; too high can cause the pattern to glue the condition that can't the adhesion appear in the in-process of clothing, too high can lead to forming sunken on the sticker towards the piece in-process, can't normally paste on the clothes or part piece laminating is inhomogeneous and drop easily when the clothing processing of later stage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a can realize towards the quick-witted towards piece device that scalds of needle buffering is provided, avoids appearing towards the phenomenon that the needle breaks or buckles to reduce the requirement to the platen.

In order to solve the technical problem, the utility model adopts the following technical scheme: the punching device of the sheet ironing machine capable of realizing punching pin buffering comprises a punching mechanism and a punching pin buffering mechanism,

the punching mechanism comprises a punching needle mounting seat provided with a punching needle, and a punching needle base which is positioned below the punching needle mounting seat and provided with a punching needle guide seat, wherein the punching needle guide seat is provided with a blanking hole which is communicated up and down, the punching needle guide seat is provided with a sheet passing groove which is communicated front and back and passes through the blanking hole, and when the punching needle is lifted to the highest point, the bottom surface of the punching needle is positioned in the blanking hole and is higher than the sheet passing groove on the punching needle guide base;

the punch pin buffer mechanism comprises:

the buffer base fixing sleeve is arranged on the bedplate and corresponds to the position of the punching needle above the bedplate, and the buffer base fixing sleeve is provided with an adjusting hole which is communicated up and down;

the buffer base is provided with an adjusting shaft, the adjusting shaft is provided with a buffer hole, the adjusting shaft is in threaded connection with the adjusting hole, and the relative position of the adjusting shaft and the adjusting hole is adjusted through threaded fit between the adjusting shaft and the adjusting hole;

the buffer pin is acted with the punch pin which is arranged downwards, and the buffer pin is movably connected with the buffer hole;

the elastic reset piece is connected to the buffer hole and the elastic support buffer pin, provides buffer force when the punching needle punches downwards, and realizes the reset of the buffer pin after the punching needle resets.

Preferably, a punching needle base fixing block is connected to the upper portion of the punching needle base, and a positioning hole matched with the upper portion of the punching needle guide seat is correspondingly formed in the bottom of the punching needle base fixing block.

Preferably, the punching needle is sleeved with a punching needle return spring, the upper end of the punching needle return spring is abutted to the punching needle mounting seat, and the lower end of the punching needle return spring is abutted to the punching needle base fixing block.

Preferably, the punching mechanism further comprises a punching needle mounting seat guide shaft connected with the punching needle base fixing block, and the punching needle mounting seat is provided with a guide hole in guide fit with the punching needle mounting seat guide shaft.

Preferably, the punching needle mounting seat is provided with a punching needle mounting hole, the upper part of the punching needle mounting hole is provided with a step hole, the upper part of the punching needle is provided with a step shaft matched with the step hole, a punching needle baffle is connected above the punching needle mounting hole, and the punching needle is fixed in the punching needle mounting hole through the punching needle baffle.

Preferably, a buffer pad is connected to the upper end of the buffer pin.

Preferably, the outer edge of the lower part of the upper end face of the buffer pin is provided with a limit flange, and a buffer pin clamping ring matched with the limit flange is installed at the opening of the buffer hole.

Preferably, the elastic reset piece is a buffer pin reset spring, and the buffer pin reset spring is sleeved outside the buffer pin.

Preferably, the bottom of the buffer base is provided with an outer hexagonal part connected with the lower end of the adjusting shaft.

The utility model also provides a sheet ironing machine, include the sheet ironing machine towards the piece device that can realize towards the buffering of needle.

The utility model discloses a technical scheme, following beneficial effect has:

when the punching needle is lifted to the highest point, the bottom surface of the punching needle is positioned in the blanking hole and is higher than the sheet passing groove on the punching needle guide base. Because the whole stroke of the punching needle is guided by the blanking hole, the phenomenon that the punching needle is broken or bent due to deviation of the punching needle during the operation of a machine can be effectively avoided.

The punching pin buffer mechanism is directly fixed on the bedplate and is finely adjusted up and down through threads between the buffer base and the buffer base fixing sleeve, so that the requirement on punching height is met, the requirement on the bedplate is greatly reduced, a PVC (polyvinyl chloride) plate and a rubber plate are saved, the overall weight of the frame is reduced, and the load is reduced. In addition, compared with the prior art that the whole frame needs to be adjusted, the height of the buffering base of the corresponding punching pin buffering mechanism is adjusted only by corresponding to each punching pin, the adjustment of the surface is changed into the adjustment of a small-range inner point, the working time is saved, and the efficiency is improved.

The specific technical solution and the advantages of the present invention will be described in detail in the following detailed description with reference to the accompanying drawings.

Drawings

The invention will be further described with reference to the accompanying drawings and specific embodiments:

FIG. 1 is a side view of the wafer ironing machine of the present invention;

FIG. 2 is a perspective view of the wafer ironing machine of the present invention;

fig. 3 is an exploded view of the middle material belt loosening device of the present invention;

fig. 4 is a perspective view of the material belt releasing device of the present invention;

fig. 5 is an exploded view of the punching mechanism of the present invention;

fig. 6 is a perspective view of the middle sheet punching mechanism of the present invention;

fig. 7 is a side view of the middle punching mechanism of the present invention;

FIG. 8 is a cross-sectional view taken along line A-A of FIG. 7;

fig. 9 is a schematic view of the middle punch needle driving assembly of the present invention mounted on the housing;

fig. 10 is a schematic structural view of the middle punch needle driving assembly of the present invention;

fig. 11 is an exploded view of the drive assembly of the center punch needle of the present invention;

fig. 12 is an exploded view of the middle punch pin cushion mechanism of the present invention;

fig. 13 is an outline view of the middle punch pin buffering mechanism of the present invention;

fig. 14 is a front view of the middle punch pin buffering mechanism of the present invention;

FIG. 15 is a cross-sectional view A-A of FIG. 14;

in the figure:

1-a material belt releasing device; 10-a disc holder; 1000-a material tape reel; 1001-material belt; 101-magnet mounting holes; 102-a conditioning tank; 1021-gear groove; 103-torsional spring clamping hole; 104-through slots; 105-bending a plate; 11-disc support rollers; 111-disc support roller shaft; 12-felt sheet; 121-felt base plate; 13-a material belt guide wheel; 131-a material belt guide wheel shaft; 14-guiding the bobbin; 141-a guide shuttle mandrel; 15-an induction baffle; 151-vertical section; 152-a rear extension section; 153-a sensing segment; 16-torsion spring; 161-fulcrum screw; 162-a first leg; 17-a spacing washer; 18-the material belt anti-separation baffle; 181-baffle plate fixing screw; 182-a blocking portion; 19-a material tape reel;

2-a head assembly of the sheet ironing machine; 20-a housing assembly; 201-punch needle driving component; 2010-balance drive pin; 2011-punch pin drive cam; 2012-the punch pin drives the three-hole connecting rod; 2013-punching a middle pin; 2014-punching needle driving small connecting rod; 2015-punch pin drive pin; 2016-punch pin link pin; 2017-punch needle driver; 20171-posterior protrusion; 20172-side tab; 20173-a vertical adjustment hole; 2018-driving a guide shaft by a punching needle; 2019-punching pin driving rod; 20191-drive head; 202-a balanced drive assembly; 2021 balance drive cam; 2022-balanced drive three eye linkage; 2023-balance middle pin; 2024-balanced drive small link; 2025-balanced drive pin; 2026-balance link pin; 2027-balanced driver; 2028-balanced drive guide shaft; 203-an inductor; 21-a head assembly module; 211-a blanking belt guide roller; 212-a sheet feeding roller assembly; 23-a color changing guide rail assembly; 24-feeding belt guide rollers;

3-punching mechanism; 31-punching needle base; 311-step mounting holes; 312-a slide through port; 313-upper step surface; 32-punch needle guide seat; 321-blanking holes; 322-a chip-passing groove; 323-a step portion; 33-punching needle base fixing block; 331-locating holes; 332-lower spring mounting groove; 34-a guide shaft of a punching needle mounting seat; 341-card slot; 342-a limiting head; 35-punching needle mounting base; 351-punching a needle mounting hole; 352-a groove plate; 353, a chute; 354-guide holes; 355-spring mounting groove; 36-punching needle; 361-step axis; 37-a needle punching return spring; 38-punch pin baffle; 381-a recess;

4-punching needle buffer mechanism; 41-buffer base fixing sleeve; 411-a conditioning well; 412-a circular ring; 42-a buffer base; 421-buffer hole; 422-minor diameter shaft section; 423-large diameter shaft section; 424-outside hex; 425-a fastening hole; 43-a buffer pin; 431-cushion mounting groove; 432-a position-defining flange; 44-a cushion pad; 45-bump pin return spring; 46-buffer pin clamp spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all 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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to 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", "front", "rear", "left", "right", etc., indicating orientations or positional relationships are based only on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device/element referred to must have a particular orientation or be constructed and operated in a particular orientation, and thus should not be construed 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, e.g., as meaning fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

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 15, the sheet ironing machine includes a sheet ironing machine frame, a sheet ironing machine head assembly 2, a material tape feeding device 1, and a platen, which is installed on the sheet ironing machine frame and located below the sheet ironing machine head assembly 2.

The hot stamping machine head assembly 2 comprises a head assembly module 21 and a shell assembly 20 which are arranged on a hot stamping machine frame, the shell assembly 20 is fixed on the hot stamping machine frame, a plurality of groups of head assembly modules 21 are arranged side by side corresponding to one shell assembly 20, and each head assembly module 21 conveys a hot stamping piece with one color (specification) and completes stamping.

At least two head assembly modules 21 are detachably connected by fasteners to form an integral head assembly module assembly structure. The head assembly module assembly structure is located in front of the housing assembly 20, and a color changing guide rail assembly 23 is arranged between the head assembly module assembly structure and the housing assembly 20. When changing color, the head assembly module combined structure is driven by the color changing box and slides along the color changing guide rail assembly 23, and after the color changing is finished, one set head assembly module 21 is matched with the shell assembly to carry out the ironing piece corresponding to the color material belt (specification).

Refer to the chinese patent application No. 2020101521463, previously filed by the applicant. The machine head assembly module comprises a machine head shell and a sheet feeding roller wheel assembly 212 arranged on the machine head shell, the sheet feeding roller wheel assembly comprises a driving roller and a driven roller, the driving roller is arranged on a driving roller shaft, and the driving roller and the driven roller are matched to convey the material belt. The shell assembly comprises a shell and a sheet feeding motor arranged on the shell, and the sheet feeding motor drives the driving roller to rotate through a sheet feeding transmission mechanism. The film feeding transmission mechanism comprises a film feeding driving gear and a film feeding driven gear which are meshed with each other, the film feeding driven gear is connected with the driving roller, and the film feeding driven gear and the driving roller synchronously rotate.

The mode that send a driving gear and send a driven gear meshing is adopted to carry out the transmission, and the back is changed the look and is accomplished, and the piece driven gear that send that does not work is with sending a driving gear and not meshing, and these send a driven gear to can produce rotatoryly because of the vibrations of machine operation to lead to changing the look in-process, send a driving gear and send a driven gear dislocation, can not smoothly mesh, cause the damage of gear or other some aspects.

Therefore, in order to solve the problems, a sheet feeding driven gear self-locking mechanism for locking the sheet feeding driven gear which does not work after color changing can be further arranged, the sheet feeding driven gear self-locking mechanism comprises a self-locking ejector rod which can be clamped into a tooth groove of the sheet feeding driven gear, so that the sheet feeding driven gear cannot rotate due to vibration of machine operation, and the sheet feeding driving gear and the sheet feeding driven gear can be accurately meshed and driven in the color changing process.

The self-buckling ejector rod is a cylinder and cannot be well meshed with the tooth grooves of the driven gear for feeding the sheets, so that the end of the self-buckling ejector rod is provided with a trapezoidal head in order to adapt to the size and the shape of the tooth grooves of the driven gear for feeding the sheets, and the trapezoidal head is clamped into the tooth grooves of the driven gear for feeding the sheets.

In order to realize the purpose of automatic operation of the self-buckling ejector rod, namely, in the working process of the machine head assembly module before color changing, the self-buckling ejector rod is separated from the tooth groove of the driven piece feeding gear, the meshing transmission of the driven piece feeding gear and the driving piece feeding gear is ensured, after the color changing is finished, the machine head assembly module does not work, and the self-buckling ejector rod can be clamped into the tooth groove of the driven piece feeding gear. Send piece driven gear from knot mechanism still has following technical characteristic, further including the self-locking fixed block that has the activity hole promptly, from detaining ejector pin swing joint in the activity hole, from detaining the ejector pin and being connected with its card of drive and going into the self-locking reset spring who sends piece driven gear tooth's socket to and the drive is from detaining the drive assembly that the ejector pin deviates from sending piece driven gear tooth's socket when trading the look.

In this embodiment, the self-locking driving assembly comprises a self-locking bearing seat arranged on the casing and a self-locking bearing arranged on the self-locking bearing seat, wherein the self-locking bearing and the self-locking ejector rod act to drive the self-locking bearing to act. Specifically, the self-fastening bearing seat comprises a vertical mounting part and a bottom plate horizontally extending from the lower end of the vertical mounting part to the side face, a fixing hole is formed in the bottom plate, the self-fastening bearing is mounted on the vertical shaft, and the upper portion of the vertical shaft is fixed in the fixing hole. When changing color, the head assembly module slides along the horizontal guide rail, and in the process, the self-buckling bearing drives the self-buckling ejector rod to act and separate from the tooth groove of the driven gear for feeding the sheet.

The self-buckling top rod horizontally slides forwards and backwards, and the self-buckling bearing horizontally slides leftwards and rightwards, so that the self-buckling top rod is inconvenient to directly contact. In order to facilitate the action of the self-buckling ejector rod and the self-buckling bearing, the self-buckling ejector rod and the self-buckling ejector rod clasping block are fixed, and the self-buckling clasping block is vertically arranged and the upper part of the self-buckling ejector rod clasping block is provided with a driving surface which acts on the self-buckling bearing. The driving surface is preferably an arc surface to form smooth matching with the self-buckling bearing, so that the self-buckling ejector rod gradually changes.

The setting of piece is embraced to the corresponding ejector pin of detaining certainly, it is equipped with the movable slot that link up with the activity hole from detaining the fixed block, it slides along the movable slot to embrace the piece from detaining the ejector pin, from detaining reset spring's one end and from detaining the ejector pin and embrace a butt, the other end and movable slot cell wall butt.

After one specification (color) of the hot piece is manufactured, the hot piece is converted into another specification of the hot piece head to be manufactured (color changing process for short), a self-buckling bearing fixed on a self-buckling bearing seat is contacted with a self-buckling ejector rod holding block fixed on a self-buckling fixing block on a machine head assembly module, the self-buckling bearing continuously extrudes the self-buckling ejector rod holding block in the color changing process, a self-buckling reset spring is continuously compressed, a piece feeding driven gear tooth groove is gradually withdrawn from a piece feeding driven gear tooth groove, the piece feeding driving gear and the piece feeding driven gear are gradually engaged while the self-buckling ejector rod retreats, and the machine starts to operate after the self-buckling ejector rod is completely withdrawn. After the color changing operation, the head assembly module which does not work pushes the self-buckling ejector rod to embrace the block due to the acting force of the self-buckling reset spring, the trapezoidal head at the end of the self-buckling ejector rod is popped out and is propped in the tooth groove of the driven gear of the sheet feeding, so that the head assembly module cannot rotate due to the vibration of the operation of the machine.

Further, send piece drive mechanism still includes the hold-in range subassembly, the hold-in range subassembly includes two synchronous pulleys and installs the hold-in range on two synchronous pulleys, send the output shaft of piece motor and connect the initiative synchronous pulley wherein, another driven synchronous pulley and send the piece driving gear all to install on drive gear shaft. The shell is provided with a sheet feeding gear bearing seat, bearings are arranged at two ends of the driving gear shaft, and the two bearings are respectively supported on the shell and the sheet feeding gear bearing seat.

Those skilled in the art will appreciate that the sheet feeding driven gear and the drive roller are of a unitary construction for ease of installation.

Further, the machine head assembly module 21 further includes a punching mechanism 3 mounted on the machine head housing. Referring to fig. 5 to 8, the punching mechanism 3 includes a punching needle mounting seat 35 provided with a punching needle 36, and a punching needle base 31 located below the punching needle mounting seat 35 and provided with a punching needle guide seat 32, the punching needle guide seat 32 is provided with a blanking hole 321 which is through from top to bottom, and the punching needle guide seat 32 is provided with a sheet passing groove 322 which is through from front to back and passes through the blanking hole. Corresponding to the sheet passing groove 322, the front side and the rear side of the punching needle base 31 are both provided with sheet passing openings 312 communicated with the sheet passing groove 322. The punching needle guide seat 32 and the punching needle base 31 may be an integral structure or a split structure, in this embodiment, the split structure is adopted, and the punching needle guide seat 32 is a standard component after processing.

At present, when a punching needle is lifted to the highest point, the bottom surface of the punching needle is higher than a blanking hole, and if the punching needle deviates when a machine runs, the punching needle deviates from the blanking hole when punching downwards, and is easy to break or bend. Therefore, in this embodiment, when the punching needle 36 is lifted to the highest point, the bottom surface of the punching needle 36 is located in the blanking hole 321 and higher than the sheet passing groove 322 on the punching needle guide base 32, and the whole stroke of the punching needle 36 is guided by the blanking hole 321, which can effectively avoid the phenomenon that the punching needle 36 is knocked off or bent due to the deviation of the punching needle 36 during the operation of the machine.

Further, a punch needle base fixing block 33 is connected above the punch needle base 31, the punch needle base fixing block 33 is provided with a punch needle guide hole in guide fit with the punch needle 36, and a positioning hole 331 in corresponding fit with the upper portion of the punch needle guide seat 32 is formed in the bottom of the punch needle base fixing block 33 below the punch needle guide hole. The punch needle base 31 is provided with a step mounting hole 311, and the lower part of the punch needle guide seat 32 is provided with a step part 323 which is matched with the step mounting hole. The punching needle guide seat 32 is fixed between the punching needle base 31 and the punching needle base fixing block 33 through the matching of the positioning hole 331 and the step mounting hole 311, accurate installation is realized, and the centering of the blanking hole 321 and the punching needle 36 is ensured.

In order to connect the upper part of the punching needle base 31 with the punching needle base fixing block 33 for fixing, the left side and the right side of the bottom surface of the punching needle base 31 are provided with upper step surfaces 313, fixing holes are formed in the positions of the upper step surfaces 313, the fixing holes are connected with fixing screws, and the fixing screws are connected with threaded holes in the punching needle base fixing block 33. The sheet passing openings 312 are formed in the front and rear sides of the top surface of the punch pin base 31 and enclose a sheet passing channel hole with the bottom surface of the punch pin base fixing block 33.

In order to realize the reset of the punching needle 36, a punching needle reset spring 37 is sleeved outside the punching needle 36, the upper end of the punching needle reset spring 37 is abutted with the punching needle mounting seat 35, and the lower end of the punching needle reset spring 37 is abutted with the punching needle base fixing block 33. After punching, the punching needle mounting seat 35 and the punching needle 36 thereon are quickly reset upwards under the action of the punching needle reset spring 37.

Specifically, the bottom of the punch pin mounting seat 35 is provided with an upper spring mounting groove 355 which is matched with the upper end of the punch pin return spring 37, and the upper part of the punch pin base fixing block 33 is provided with a lower spring mounting groove 332 which is matched with the lower end of the punch pin return spring 37.

In order to guide the punch pin 36 to move up and down, the punching mechanism 3 is further provided with a punch pin mounting seat guide shaft 34, and the punch pin mounting seat 35 is provided with a guide hole 354 in guide fit with the punch pin mounting seat guide shaft 34. The upper end of the punch pin mounting seat guide shaft 34 penetrates through the guide hole 354 and is connected with the clamp spring through the clamp groove 341, and the upper end of the punch pin mounting seat guide shaft 34 is limited through the clamp spring. The lower end part of the punching needle mounting seat guide shaft 34 is provided with a limiting head 342, the punching needle base fixing block 33 is provided with a sinking groove, and the limiting head 342 is positioned in the sinking groove and fixes the lower end part of the punching needle mounting seat guide shaft 34. The punch needle 36 is ensured to be aligned with the blanking hole 321 when the punch needle 36 punches downwards through the guide of the punch needle mounting seat guide shaft 34 to the punch needle mounting seat 35.

In order to mount the punching needle 36, a punching needle mounting hole 351 is formed in the punching needle mounting seat 35, a stepped hole is formed in the upper portion of the punching needle mounting hole 351, and a stepped shaft 361 which is engaged with the stepped hole is formed in the upper portion of the punching needle 36. A punch pin baffle 38 is connected to the upper portion of the punch pin mounting hole 351, and the punch pin 36 is fixed to the punch pin mounting hole 351 through the punch pin baffle 38. The punching needle 36 is convenient to mount on the punching needle mounting seat 35, and is reliable in fixation and not easy to loosen.

Furthermore, two groove plates 352 are arranged above the punch pin mounting seat 35 side by side, each groove plate is of an L-shaped structure, a T-shaped driving groove is formed between the two groove plates 352, and two transverse ends of the driving groove are communicated. The root of the groove plate is provided with a sliding groove 353, and the punching needle baffle 38 is arranged in the sliding groove 353 and fixed by adopting a locking screw. The side of the punch pin baffle 38 is provided with a notch 381 corresponding to the locking screw, and the root of the groove plate corresponding to the sliding groove is provided with a threaded hole matched with the locking screw.

The punching needle driving rod is clamped into a driving groove of the punching needle mounting seat 35, when the punching needle driving rod punches downwards, the punching needle mounting seat 35 is driven, the punching needle mounting seat 35 drives the punching needle 36 to move downwards, the punching needle passes through a punching needle guide hole in the punching needle base fixing block 33 and a blanking hole 321 in the punching needle guide seat 32, the punching needle penetrates out of the lower portion of the punching needle base 31, a material belt where the material sheet is located passes through a sheet passing groove 322 in the middle of the punching needle guide seat 32, the material sheet with the size corresponding to the specification is punched out by the punching needle 36, a certain distance is punched out of the punching needle base 31, and the material belt is adhered to a sticker on a special rubber plate. During the lifting process, the punch pin 36 is lifted under the dual action of the punch pin driving rod and the punch pin return spring 37.

Each punching needle 36 corresponds to a material sheet punching sheet with different sizes, and the punching needles 36 can be replaced according to the required material sheet specification. The sizes of the parts, matched with the punching needle mounting holes 351, of the punching needles with different specifications are consistent, and the punching needles are convenient to replace. The punching needle 36 is detachably mounted on the punching needle mounting seat 35, and the punching needle is fixed on the punching needle mounting seat through the punching needle baffle 38, so that the punching needle 36 is convenient to replace and maintain at the later stage. After the punching needle 36 is replaced, if the size of the blanking hole is not changed, blanking is affected, so in order to smoothly blank, the punching needle base 31 is detachably mounted on the punching needle base fixing block 33, and the punching needle and the blanking hole can be matched to punch the ironing sheets with different specifications by replacing different punching needles 36 and punching needle bases 31.

In this embodiment, at least two head assembly modules are detachably connected as a unit by fasteners. At least two of the nose assembly modules have punch pins of at least two different sizes. The modular design of the head assembly module is adopted, and the sizes of the punching needles of the core assemblies are different (generally: 0.8mm, 1.0mm, 1.2mm, 1.5mm and 2.0mm, including but not limited to the specifications). Taking a handpiece component module combined structure composed of 8 handpiece component modules as an example, under the condition that 8 types of handpiece component modules can be installed, except that core punching needles are different, other accessories in the modules are all universal, so that one handpiece component module with any specification can be installed at any position of 1-8 colors and normally works, and the combination mode of the handpiece component module is very diversified. Therefore, in order to realize the punching of the material sheets with different sizes, the machine head assembly module is directly replaced.

Of course, it will be understood by those skilled in the art that at least two of the handpiece module modules may have the same size punch pin.

The fastener is a bolt penetrating through at least two head assembly modules, and the head assembly modules are provided with fixing holes matched with the bolts.

Further, a row of feeding belt guide rollers 24 is arranged above the at least two head assembly modules and in one-to-one correspondence with the head assembly modules. The front side of the bottom of the machine head component module is provided with a discharging belt guide roller 211. The machine head shell comprises side plates on the left side and the right side and supporting blocks located between the side plates on the left side and the right side, and the two side plates and the supporting blocks are fixed through screws. The punching mechanism 3 is arranged between the left side plate and the right side plate.

And the rear sides of the at least two head assembly modules are fixedly provided with color changing slide rails or color changing guide rails, the color changing slide rails or the color changing guide rails are connected with color changing pull rods, and the color changing pull rods are driven by color changing boxes.

Referring to fig. 9-11, the housing assembly 20 includes a housing, a spindle traversing the housing, and a punch pin drive assembly 201. The punch pin driving assembly 201 comprises a punch pin driving guide shaft 2018 vertically installed on the machine shell, a punch pin driver 2017 connected to the punch pin driving guide shaft 2018 in a sliding mode, and a punch pin driving rod 2019 connected with the punch pin driver 2017, and a punch pin driving cam link mechanism is connected between the main shaft and the punch pin driver 2017.

The bottom of the punch needle driving rod 2019 is provided with a T-shaped driving head 20191, the driving head 20191 is in clearance fit with a driving groove in the top of the punch needle mounting seat 35, the driving head can slide through the driving groove during color changing, and the punch needle mounting seat 35 and the punch needle 36 on the punch needle mounting seat can be driven to punch downwards when the punch needle driving rod 19 moves downwards.

Specifically, the punch pin driver 2017 is provided with a vertical adjusting hole 20173, the punch pin driving rod 2019 is movably connected with the vertical adjusting hole 20173, and the punch pin driver 2017 is connected with an adjusting screw for locking and fixing the punch pin driving rod 2019 with the vertical adjusting hole 20173. The punch pin driving rod 2019 can move up and down along the vertical adjusting hole and is locked and fixed by the adjusting screw, so that the fine height position of the punch pin driving rod 2019 can be adjusted, the accumulated error of the punch pin driving cam link mechanism and the punch pin driver thereof is offset, and the punch stroke of the punch pin driving rod 2019 is more accurate.

Dash needle drive cam link mechanism and adopt current structure, dash needle drive cam link mechanism including dash needle drive cam 2011, dash the big connecting rod of needle drive, dash needle drive three-hole connecting rod 2012, dash the little connecting rod 2014 of needle drive, dash needle drive cam 2011 and install in the main shaft, the head punchhole that dashes needle drive three-hole connecting rod 2012 is connected with dash needle drive little connecting rod 2014 through dashing needle connecting rod round pin 2016, dash needle drive little connecting rod 2014 through dashing needle drive round pin 2015 and dash needle driver 2017 and be connected, dash the big connecting rod of needle drive is connected to needle drive cam 2011, dash the big connecting rod of needle drive through dash in the middle of the needle in the middle of round pin 2013 with dash the middle of the middle punchhole connection of needle drive three-hole connecting rod 2012.

The punch needle driver 2017 is provided with a rear protruding portion 20171 and a side protruding portion 20172, the rear protruding portion is hinged with the punch needle driving small connecting rod 2014, the vertical adjusting hole 20173 is formed in the side protruding portion 20172, and the rear protruding portion 20171 and the side protruding portion 20172 are circumferentially staggered.

Because the work inertia of the punching needle cam link mechanism is large, the vibration is increased, and the punching needle speed and precision are greatly influenced, and therefore, a balance driving assembly 202 is further arranged. The balance driving assembly 202 comprises a balance driving guide shaft 2028 vertically mounted on the machine shell, a balance driver 2027 slidably connected to the balance driving guide shaft 2028, and a balance driving cam link mechanism, the balance driving cam link mechanism comprises a balance driving cam 2021, a balance driving large link, a balance driving three-eye link 2022, and a balance driving small link 2024, the balance driving cam 2021 is mounted on the main shaft, a head hole of the balance driving three-eye link 2022 is connected with the balance driving small link 2024 through a balance link pin 2026, the balance driving small link 2024 is connected with the balance driver 2027 through a balance driving pin 2025, the balance driving cam 2021 is connected with the balance driving large link, and the balance driving large link is connected with a middle hole of the balance driving three-eye link 2022 through a balance middle pin 2023. The rear end hole of the balance driving three-hole connecting rod 2022 and the rear end hole of the punch pin driving three-hole connecting rod 2012 are both connected with a balance driving pin 2010. Through accurate adjustment of the mounting process, the inertia force directions of the balance driving cam 2021 and the punching pin driving cam 2011 are opposite in the rotating process. The inertia force is offset through balance, so that the driving speed and precision are improved.

In order to realize the inertia force balance between the punch pin driving cam and the balance driving cam, the structure and the mass of the punch pin driving cam 2011 and the balance driving cam 2021 are the same. Of course, in the same way, the structures and the masses of the punching needle driving large connecting rod and the balance driving large connecting rod are the same, the structures and the masses of the punching needle driving three-hole connecting rod and the balance driving three-hole connecting rod are the same, and the structures and the masses of the punching needle driving small connecting rod and the balance driving small connecting rod are the same. Those skilled in the art will appreciate that the same structures and qualities described above are merely ideal and that certain errors and local variations may occur.

As shown in fig. 1, the material tape feeding device 1 includes a plurality of material tape feeding mechanisms, one material tape feeding mechanism is correspondingly disposed above each head module, and the plurality of material tape feeding mechanisms are disposed side by side.

Referring to fig. 3 and 4, the tape feeding mechanism includes a reel holder 10, and a tape reel 19 is rotatably mounted to a side surface of the reel holder 10. The through groove 104 is arranged on the disc support 10, so that materials can be reduced, and the weight can be reduced. The rear side of the disc support 10 is provided with a bending plate 105, the bending plate 105 is provided with a fixing hole, and the disc support 10 is fixed through the fixing hole. One side surface of the disc support 10 is provided with a pair of disc support rollers 11, the pair of disc support rollers 11 are supported at the front and rear sides of the outer diameter of the bottom of the material disc 10, the disc support rollers 11 are mounted on a disc support roller shaft 111, and the disc support roller shaft 111 is mounted on the disc support 10.

Since the plurality of material tape feeding mechanisms are arranged side by side and the material tape reels 19 are movably disposed, a spacing support member needs to be disposed between the material tape reels 19 of two adjacent material tape feeding mechanisms. In one embodiment, the felt sheet 12 is bonded to one side surface of the reel holder 10 corresponding to the position of the material supply reel 19, the felt base plate 121 is bonded to the other side surface of the reel holder 10 corresponding to the position of the material supply reel 19, the felt base plate 121 is bonded to the side away from the reel holder 10 to the felt sheet 12, and the felt base plate 121 and the reel holder 10 are attracted and fixed by a magnetic force.

Of course, it will be understood by those skilled in the art that felt sheet 12 described above is the preferred material, but may be replaced with rubber or the like.

The thickness of the material tape reel 19 used in the market at present is different, and for different customers, only the thickness of the felt sheet 12 attached to the felt bottom plate 121 needs to be changed to adapt to the material tape reels 19 with different thicknesses. Because the magnetic force attracting and fixing device is fixed, the customer can replace the device conveniently.

Specifically, at least one magnet mounting hole 101 is correspondingly formed in the disc holder 10 and the felt base plate 121, and a magnet 122 is mounted in the magnet mounting hole 101. In order to ensure enough attraction force, a plurality of magnet mounting holes can be arranged and a plurality of magnets can be correspondingly mounted.

The felt bottom plate 121 and the felt 12 are both circular corresponding to the shape of the material tape disc 19, and the upper part of the disc support 10 is provided with an arc-shaped body corresponding to the excircle outline of the upper part of the felt bottom plate 121.

Since the diameters of the feeding reel discs on the market are not uniform, in order to adapt to the feeding reel discs 19 with different diameters, the disc holder 10 is provided with an adjusting groove 102 for adjusting the relative position between the two disc support roller shafts 111, and the relative position between the two disc support roller shafts 111 is adjusted to adapt to the feeding reel discs 19 with different outer diameters.

In order to ensure that the relative position between the two disc support roller shafts 111 is fixed after adjustment, a plurality of gear grooves 1021 engaged with the disc support roller shafts 111 are arranged on the bottom wall of the adjusting groove 102 along the front-back direction. In order to prevent the disc support roller shaft 111 from loosening, the disc support roller shaft 111 is connected with a lock nut locked with the adjustment groove 102. The rear disc support roller shaft 111 is clamped in the gear groove 1021 after the position is adjusted, and then is fixed by a lock nut. Therefore, the position of the supporting roller shaft 111 of the disc can be adjusted by matching the material disc 19 with different outer diameters.

Further, the tape feeding mechanism further includes a tape guide wheel 13 mounted on the tape tray support 10, and the tape guide wheel 13 is mounted below the front side of the tape tray support roller to guide the tape 1001 led out from the tape tray 19. The tape guide wheel 13 is rotatably supported on a tape guide wheel shaft 131. The tape guide wheel shaft 131 passes through the tape guide wheel and is fixed on the disc support 10. The web guide wheel 13 has, in addition to its guiding function, also the purpose of obtaining a suitable frictional force, and thus a suitable range of oscillation of the alarm mechanism described below.

In the working process of the sheet ironing machine, the situation that the sheet is broken or the material belt is used up or a card is arranged at a certain position, namely various conveying faults can occur. In order to alarm various conveying faults, a material belt conveying fault alarm mechanism is arranged.

Referring to fig. 3 and 4, the tape feeding failure warning mechanism includes a sensor 203, a sensing flag 15, and a guide bobbin 14 connected to the sensing flag 15. The strip 1001 is fed through the guide bobbin 14. The induction baffle 15 is hinged to the disc support 10, a torsion spring 16 is arranged between the induction baffle 15 and the disc support 10, the induction baffle 15 tensions the material belt 1001 backwards through the guide shuttle peg 14 and is close to the inductor 203 under the action of the torsion spring 16, and the torsion spring can be used for ensuring that a large torsion force is generated. It will be appreciated that the torsion spring could be replaced by a similar extension spring.

As shown in fig. 1, the tape 1001 exits the tape reel 19, passes first around the front side of the tape guide wheel 13, then passes back around the back side of the guide bobbin 14, and finally is fed into the feed roller assembly 212 of the head assembly module 21 below. The head assembly module 21 is punched by the punching mechanism 3.

The sensor 203 is preferably a position sensor, but may also be a travel switch. The tape supply motor drives the tape supply roller assembly 212 to continuously pull the bobbin tape 1001, and in this state, the tape 1001 is always in a taut state, and the leading bobbin 14 is pulled forward by a certain distance. The position sensor senses the leading bobbin 14 ahead of it within a certain range. Under normal conditions, the material belt is tight, and the distance between the guiding shuttle peg and the position sensor keeps constant in a small range (back and forth swing) due to the fact that the motor pulls the material belt and the material belt disc rotates, and the machine operates normally. When the broken piece or the material belt is used up, the guide shuttle peg approaches the position sensor under the action of the spring, and the distance between the guide shuttle peg and the position sensor is changed and exceeds the set minimum effective range; or when a card is placed at a certain position (mainly indicating the card between the material disc and the disc rack), the distance between the material disc and the disc rack is suddenly increased to exceed the set maximum distance, and the machine stops and gives an alarm.

Specifically, the sensing baffle 15 includes a vertical section 151, a rear extension section 152 connected to the bottom end of the vertical section and extending rearward, and a sensing section 153 connected to the rear end of the rear extension section and extending laterally, the top of the vertical section is connected to the bobbin disk support 10, and the sensing section 153 is matched with the sensor 203 to monitor the position between the guiding bobbin 14 and the sensor 203. Adopt position sensor direct induction section 153, convenient detection also can guarantee to detect the accuracy.

The guide bobbin 14 is rotatably connected to a guide bobbin shaft 141, and the guide bobbin shaft 141 is fixed to the sensing barrier 15. The vertical section 151 and the rear extension section 152 are connected with a welding nut, the guide shuttle mandrel 141 is provided with a thread head, and the thread head is connected with the welding nut.

In this embodiment, the torsion spring 16 and the sensing baffle 15 are both connected with a fulcrum screw 161, the sensing baffle 15 is provided with a fulcrum hole, and the fulcrum screw 161 passes through the torsion spring and the fulcrum hole to be connected with the disc support through a thread.

The disc support 10 is provided with a plurality of torsion spring clamping holes 103 distributed along an arc shape, the first support leg 162 of the torsion spring 16 is clamped into one of the torsion spring clamping holes, and the acting force of the torsion spring 16 on the induction baffle 15 is adjusted by selecting different torsion spring clamping holes 103 to be matched with the first support leg of the torsion spring 16.

The piece dish support 10 is connected with the spacing washer 17 of the forward turned angle of restriction response baffle 15, and rubber material plays spacing and cushioning effect to the response section 153 of response baffle under the avoidance of failure condition is infinitely close to the position inductor.

In a normal sheet feeding state, in order to prevent the material belt 1001 from separating from the guiding bobbin 14, a material belt separation preventing plate 18 is connected to the bottom of the vertical section, and the material belt separation preventing baffle 18 is L-shaped and comprises a blocking portion 182 which blocks the upper position of the rear side of the guiding bobbin 14 and a fixing portion connected with the blocking portion 182. The fixed part of the material belt anti-separation plate 18 is fixed on the induction baffle plate 15 through baffle plate fixing screws 181, the induction baffle plate 15 is provided with welding nuts connected with the baffle plate fixing screws 181, the fixed part is provided with fixing holes, and the baffle plate fixing screws 181 penetrate through the fixing holes. The strip detachment prevention plate 18 can be rotated by loosening the stop plate fixing screw 181, and the distance between the blocking portion and the guide bobbin 14 is adjusted.

The platen (frame) structure used by the existing sheet ironing machine is characterized in that a layer of PVC (polyvinyl chloride) plate is fixed on a frame of the frame, and then a specially-made rubber plate is attached to the frame to form a proper pattern in the sheet ironing process of the sheet ironing machine, the requirement of the sheet ironing process on the platen is very high, because the height of the frame can directly influence the depth of the pattern on a sticker, and too low a punched sheet cannot be stuck on the sticker; too high can cause the pattern to glue the condition that can't the adhesion appear in the in-process of clothing, too high can lead to forming sunken on the sticker towards the piece in-process, can't normally paste on the clothes or part piece laminating is inhomogeneous and drop easily when the clothing processing of later stage.

In order to overcome the drawback of the prior art, the utility model discloses an installation scalds piece machine towards needle buffer gear 4 on the platen, corresponds with the towards piece mechanism of top. The punch pin buffering mechanism 4 includes:

the buffer base fixing sleeve 41 is arranged on the bedplate, corresponds to the position of the punching needle above the bedplate, and is provided with an adjusting hole 411 which is communicated up and down;

the buffer base 42 is provided with an adjusting shaft, the adjusting shaft is provided with a buffer hole 421, the adjusting shaft is in threaded connection with the adjusting hole 411, and the relative position of the adjusting shaft and the adjusting hole 411 is adjusted through threaded fit between the adjusting shaft and the adjusting hole 411;

the buffer pin 43 acts with a punch pin which is downwards pushed, and the buffer pin 43 is movably connected with the buffer hole 421;

the elastic reset piece is connected to the buffer hole 421 and elastically supports the buffer pin 43, provides buffer force when the punch pin punches downwards, and realizes the reset of the buffer pin 43 after the punch pin resets.

Wherein a cushion pad 44 is connected to an upper end of the cushion pin 43. The cushion pad 44 may be made of an elastic material such as silicone rubber, etc., so that the cushion effect is further improved by providing the cushion pad 44.

In an embodiment, the buffer pin 43 has a buffer mounting groove 431 at an upper end thereof, and the buffer 44 is mounted in the buffer mounting groove 431 and can be adhered thereto. Alternatively, the cushion pad 44 may be directly adhered to the upper end plane of the cushion pin 43 to prevent the cushion pad 44 from falling off. The cushion pad 44 may be made of an elastic material such as rubber.

The punching pin buffer mechanism 4 is directly fixed on the bedplate and is finely adjusted up and down through threads between the buffer base 42 and the buffer base fixing sleeve 41, so that the requirement of punching height is met, the requirement on the bedplate is greatly reduced, a PVC plate and a rubber plate are omitted, the whole weight of the frame is reduced, and the load is reduced. In addition, compared with the prior art that the whole frame needs to be adjusted, the height of the buffering base of the corresponding punching pin buffering mechanism is adjusted only by corresponding to each punching pin, the adjustment of the surface is changed into the adjustment of a small-range inner point, the working time is saved, and the efficiency is improved.

Specifically, the outer edge of the lower portion of the upper end face of the buffer pin 43 is provided with a limiting flange 432, and a buffer pin clamp spring 46 matched with the limiting flange 432 is installed at the opening of the buffer hole. The cushion pin 43 is restrained within the cushion hole 421 by the cushion pin snap spring 46 engaging the stop flange 432.

In one embodiment, the elastic return member is a buffering pin return spring 45, and the buffering pin return spring 45 is sleeved on the buffering pin 43. Under the effect of buffer round pin reset spring 45, spacing flange 432 upwards with buffer round pin jump ring 46 butt, can realize the quick reset of buffer round pin 43 through buffer round pin reset spring 45.

The buffer hole 421 is a step hole, the buffer hole 421 includes a large-diameter hole section on the upper portion and a small-diameter hole section on the lower portion, a step surface is formed between the large-diameter hole section and the small-diameter hole section, the lower portion of the buffer pin 43 is in clearance fit with the small-diameter hole section, the upper end of the buffer pin return spring 45 is abutted to the limiting flange, and the lower end of the buffer pin return spring 45 is abutted to the step surface.

The regulating shaft is a step shaft, the regulating shaft comprises a small-diameter shaft section 422 on the upper part and a large-diameter shaft section 423 on the lower part, the large-diameter shaft section 423 is a threaded rod, the small-diameter shaft section 422 upwards penetrates through the regulating hole 411, and the threaded rod is in threaded connection with the regulating hole 411. The adjusting shaft is of a stepped shaft structure, so that the threaded rod of the large-diameter shaft section is conveniently in threaded fit with the adjusting hole 411, and the height of the buffer base 42 is adjusted.

For convenience of adjustment, the bottom of the buffer base 42 is provided with an outer hexagonal part 424 connected with the lower end of the adjusting shaft, and the outer hexagonal part can be matched with a wrench to adjust the adjusting shaft. The outer hexagonal part 424 is provided with a fastening hole connected with a fastening screw, and after the adjustment is completed, the fastening screw locks the buffer base 42 and the buffer base fixing sleeve 41. The buffer base fixing sleeve 41 is provided with a circular ring part 412, the circular ring part 412 is provided with a fixing hole, the fixing hole is connected with a fixing screw, and the fixing screw is fixed with the bedplate.

Referring to fig. 1, the principle of conveying and punching the material tape 1001 is as follows: the sheet feeding roller assembly pulls the material belt 1001, after the material belt 1001 is discharged from the material belt disc 1000, the material belt 1001 sequentially passes through the material belt guide wheel 13 and the upper material belt guide roller 24 from top to bottom, is guided by the lower material belt guide roller 211 to be fed into the sheet passing groove 322, and then enters the sheet feeding roller assembly. When the hot stamping material tape 1001 passes through the sheet passing groove 322, the punch pin driving assembly drives the punch pin 36 to reciprocate up and down, and the material sheet is punched out through the punch pin 36.

It can be understood by those skilled in the art that the present invention provides a piece ironing machine, which can include the above-mentioned parts and all structures or any structure and combination thereof.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and those skilled in the art should understand that the present invention includes but is not limited to the contents described in the above specific embodiments. 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. The punching device of the sheet ironing machine capable of realizing punching pin buffering comprises a punching mechanism and a punching pin buffering mechanism,

the method is characterized in that:

the punch pin buffer mechanism comprises:

2. The punching device of the sheet ironing machine capable of realizing punching needle buffering according to claim 1, characterized in that: the punching needle guide seat is characterized in that a punching needle base fixing block is connected above the punching needle base, and a positioning hole matched with the upper part of the punching needle guide seat is correspondingly arranged at the bottom of the punching needle base fixing block.

3. The punching device of the sheet ironing machine capable of realizing punching needle buffering according to claim 2, characterized in that: the punching needle is sleeved with a punching needle return spring, the upper end of the punching needle return spring is abutted to the punching needle mounting seat, and the lower end of the punching needle return spring is abutted to the punching needle base fixing block.

4. The punching device of the sheet ironing machine capable of realizing punching needle buffering according to claim 2, characterized in that: the punching mechanism further comprises a punching needle mounting seat guide shaft connected with the punching needle base fixing block, and the punching needle mounting seat is provided with a guide hole in guide fit with the punching needle mounting seat guide shaft.

5. The punching device of the sheet ironing machine capable of realizing punching needle buffering according to claim 1, characterized in that: the punching needle mounting seat is provided with a punching needle mounting hole, the upper part of the punching needle mounting hole is provided with a step hole, the upper part of the punching needle is provided with a step shaft matched with the step hole, a punching needle baffle is connected above the punching needle mounting hole, and the punching needle is fixed in the punching needle mounting hole through the punching needle baffle.

6. The punching device of the punching machine capable of realizing punching needle buffering according to any one of claims 1 to 5, characterized in that: the upper end of the buffer pin is connected with a buffer pad.

7. The punching device of the sheet ironing machine capable of realizing punching needle buffering according to claim 6, characterized in that: the outer edge of the lower portion of the upper end face of the buffer pin is provided with a limiting flange, and a buffer pin clamping ring matched with the limiting flange is installed at the opening of the buffer hole.

8. The punching device of the sheet ironing machine capable of realizing punching needle buffering according to claim 6, characterized in that: the elastic reset piece is a buffer pin reset spring, and the buffer pin reset spring is sleeved outside the buffer pin.

9. The punching device of the sheet ironing machine capable of realizing punching needle buffering according to claim 6, characterized in that: and the bottom of the buffer base is provided with an outer hexagonal part connected with the lower end of the adjusting shaft.

10. A piece ironing machine, which is characterized in that: the punching device of the sheet ironing machine capable of realizing the punching pin buffering comprises any one of claims 1 to 9.