CN108297532B - Prevent screen printer of scraping flower - Google Patents
Prevent screen printer of scraping flower Download PDFInfo
- Publication number
- CN108297532B CN108297532B CN201810246101.5A CN201810246101A CN108297532B CN 108297532 B CN108297532 B CN 108297532B CN 201810246101 A CN201810246101 A CN 201810246101A CN 108297532 B CN108297532 B CN 108297532B
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- printing
- tensioning
- printing table
- roller
- discharging
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- 238000007790 scraping Methods 0.000 title abstract description 8
- 238000007639 printing Methods 0.000 claims abstract description 334
- 239000000463 material Substances 0.000 claims abstract description 142
- 230000007246 mechanism Effects 0.000 claims abstract description 57
- 238000007599 discharging Methods 0.000 claims abstract description 46
- 238000001035 drying Methods 0.000 claims abstract description 24
- 238000004804 winding Methods 0.000 claims description 21
- 230000003678 scratch resistant effect Effects 0.000 claims description 7
- 238000005096 rolling process Methods 0.000 abstract description 5
- 238000006748 scratching Methods 0.000 abstract description 4
- 230000002393 scratching effect Effects 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 230000009471 action Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 238000000926 separation method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000007650 screen-printing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/14—Details
- B41F15/16—Printing tables
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F15/00—Screen printers
- B41F15/08—Machines
- B41F15/12—Machines with auxiliary equipment, e.g. for drying printed articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
- B41F23/0403—Drying webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
- B41P2215/00—Screen printing machines
- B41P2215/10—Screen printing machines characterised by their constructional features
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Screen Printers (AREA)
Abstract
The utility model discloses a screen printer capable of preventing scratching, which comprises a discharging device, a printing device, a drying and rolling device and a conveying device, wherein the conveying device is used for sequentially conveying printing materials in the discharging device to the printing device and the drying and rolling device; the printing device comprises a frame, a printing table arranged on the frame, a lifting driving mechanism for driving the printing table to move up and down and a machine head unit, wherein the printing table is arranged below a printing material; the machine frames at two ends of the printing table are respectively provided with a first positioning roller and a second positioning roller for tensioning and positioning the printing material; when the printing table moves to the bottommost end, a gap is reserved between the printing material and the printing table, and when the printing table moves to the topmost position, the printing material is attached to the printing table. The screen printer can effectively solve the problem of scraping printing materials, and the conditions of uneven thickness of printed matters and distortion of printed patterns can not occur.
Description
Technical Field
The utility model relates to a screen printer, in particular to a scratch-resistant screen printer.
Background
When the existing screen printer is used for printing, a printing stock to be printed needs to be supported on a printing table, is supported by the printing table during printing, and is rolled up by a material collecting roller after the printing is finished. However, during the winding process, the forward movement of the printing material may rub against the printing table, so that the bottom surface of the printing material is scratched, which affects the quality of the whole printed matter, in particular when double-sided printing is performed, and the scratching directly affects the printing of the second side.
In order to solve the problem that the printing material is scratched, the utility model patent with the authority bulletin number of CN206781228U discloses a scratch-resistant structure of a screen printer for label printing, wherein scratch-resistant rollers are symmetrically arranged on two sides of a feeding and discharging material of a printing table and are slightly higher than the printing table, so that the printing material is not contacted with the printing table during material conveying, and the scratch of the printing material is avoided. However, the scratch-resistant mechanism has the following problems in actual operation:
because set up the anti-scratch roller that is higher than the printing table, have the clearance between stock and the printing table, need adsorb the stock to the printing table through the negative pressure on the printing table during printing for the stock produces certain tensile deformation, thereby can influence the homogeneity degree of stock material on the one hand, lead to the thickness of printed matter different, on the other hand stock loses the negative pressure effect after the printing finishes, can shrink deformation, makes printing pattern distortion deformation, thereby greatly reduced the effect of printing.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide a scratch-resistant screen printer, which can effectively solve the problem of scratch of printing materials and can not cause uneven thickness of printed matters and distorted printed patterns.
The technical scheme for solving the technical problems is as follows:
the screen printer comprises a discharging device, a printing device, a drying and winding device and a conveying device for sequentially conveying printing materials in the discharging device to the printing device and the drying and winding device, wherein,
the printing device comprises a frame, a printing table arranged on the frame, a lifting driving mechanism for driving the printing table to move up and down and a machine head unit, wherein the printing table is arranged below a printing material; the machine frames at two ends of the printing table are respectively provided with a first positioning roller and a second positioning roller for tensioning and positioning the printing material; when the printing table moves to the bottommost end, a gap is reserved between the printing material and the printing table, and when the printing table moves to the topmost position, the printing material is attached to the printing table.
Preferably, the screen printer further comprises a feeding tensioning mechanism arranged between the discharging device and the printing device and a discharging tensioning mechanism arranged between the drying and rolling device and the printing device, wherein the feeding tensioning mechanism and the discharging tensioning mechanism comprise tensioning rollers, vertically arranged mounting rods and sliding pieces arranged on the mounting rods; the sliding piece is connected to the mounting rod through a linear sliding structure capable of sliding up and down; the printing stock conveyed from the discharging device bypasses under a tensioning roller of the feeding tensioning mechanism and is continuously conveyed to the printing table downwards; the printing stock sent out by the printing table is wound from the lower part of the tensioning roller of the discharging tensioning mechanism after extending downwards, and finally enters the drying and winding device. The aim is that: 1. the printing materials at the two ends of the printing table are tensioned through the feeding tensioning mechanism and the discharging tensioning mechanism, constant tension is provided, so that the printing materials cannot be soft, excessive deep drawing cannot be generated, and the printing quality is ensured. Wherein, the principle that material loading straining device and ejection of compact straining device provided stable tensioning force does: the tensioning roller is arranged between the mounting rods and is fixedly connected to the sliding piece which can slide up and down relative to the mounting rods, namely, the tensioning roller can move up and down along the mounting rods; when the printing material is wound from the lower part of the tensioning roller, the tensioning roller is naturally pressed on the printing material under the action of gravity, and the printing material lifts the tensioning roller, so that the tensioning force borne by the printing material is the gravity of the tensioning roller, the printing material is in a constant tightening state and does not change along with the change of the speed of the driving roller, the printing material can be ensured to be printed in a proper and constant tension state, and the printing quality is improved. Further, when the speed of conveying becomes great, the printing material can upwards drive the tensioning roller for the tensioning roller upwards moves a certain distance along the installation pole, but the tensioning force that printing material received still is the gravity of tensioning roller this moment, and conversely, when the speed of conveying becomes small, the printing material becomes the state of relaxing from the state of invariable tightening, and the tensioning roller can follow the installation pole and move down a certain distance, continues to press on the printing material, in order to provide the tensioning force that lasts steadily. Thus, regardless of the change in the speed of conveyance, it becomes larger or smaller, the tensioning roller can be pressed floatingly against the printing material, thereby providing a stable tensioning force. 2. And this material loading straining device and ejection of compact straining device can also carry out the storage and the supply that only adapt to the printing stock, namely: when the speed of the printing material fed into the feeding tensioning mechanism and the discharging tensioning mechanism is larger than the speed of the printing material fed out, the length of the printing material in the feeding tensioning mechanism and the discharging tensioning mechanism is increased while the constant tension of the printing material is ensured by the tension roller through descending, so that the storage of the printing material is realized; when the speed of the printing material fed into the feeding tensioning mechanism and the discharging tensioning mechanism is smaller than the speed of the printing material fed out, the length of the printing material in the feeding tensioning mechanism and the discharging tensioning mechanism is reduced while the constant tension of the printing material is ensured by the tensioning roller through rising, so that the accelerated feeding of the printing material is realized; therefore, the device can adapt to different printing material conveying speeds.
Preferably, the tensioning roller in the discharging tensioning mechanism consists of a connecting shaft and two rollers which are rotationally connected to the connecting shaft, and the end part of the connecting shaft is fixedly connected to the sliding part. The tensioning roller can well solve the problem because the printing ink on the printed printing stock is not dried, and if the printing ink is in direct contact with the conveying roller, the printing ink is easy to scratch, and the rollers on two sides of the mounting shaft are pressed on the non-printing areas of the printing stock along two edges perpendicular to the conveying direction so as to avoid the printing areas on the printing stock, so that the printed content cannot be scratched in the conveying process.
Preferably, the number of the tensioning rollers is two, so that tensioning force can be increased, tensioning errors when the conveying speed is changed in sequence can be reduced, and printing materials can be conveyed more stably and smoothly.
Preferably, both ends of the connecting shaft of the two tensioning rollers are fixed on the two sliding members, so that the two tensioning rollers can simultaneously do vertical lifting movement along the mounting rod, and floatingly provide continuous stable tensioning force for the printing material.
Preferably, a first guide roller is arranged above the middle of the two tensioning rollers. The printing material is conveyed from the conveying roller, bypasses under the roller of the first tensioning roller, is conveyed to the first guide roller, bypasses under the second tensioning roller from the upper side of the first guide roller, and is conveyed to the next station from the lower side of the second tensioning roller.
Preferably, the lifting driving mechanism is composed of an air cylinder, wherein a cylinder body of the air cylinder is fixed on the frame, and a telescopic shaft of the air cylinder is connected with the printing table through a connecting plate. When the printing machine works, the telescopic shaft of the air cylinder drives the printing table connected with the telescopic shaft to conduct lifting movement through telescopic action, so that the bearing and separation of printing materials and the working table are achieved.
Preferably, a sliding guide rail pair is further arranged between the printing table and the frame, wherein a guide rail of the sliding guide rail pair is vertically arranged on the frame, and the printing table is arranged on a sliding block in the sliding guide rail pair. During operation, the sliding guide rail pair can accurately guide the lifting movement of the printing table, and meanwhile friction in the movement process of the printing table can be reduced, so that the lifting movement of the printing table is smoothly carried out.
Preferably, the sliding guide rail pairs are multiple groups, and the multiple groups of sliding guide rail pairs are symmetrically arranged relative to the printing table. During operation, the plurality of groups of sliding guide rail pairs which are symmetrically arranged can ensure that each point of the printing table synchronously performs lifting movement, so that the printing table is kept in a horizontal state. The aim of this arrangement is that, during printing, when the printing table is in an inclined state, the printing table cannot support the printing material when the doctor blade presses the printing material, which can lead to printing failures, so it is important that the printing table remains in a horizontal state.
Preferably, the first positioning roller and the second positioning roller are symmetrically arranged relative to the printing table, and the first positioning roller and the second positioning roller are rotationally connected with the frame. When the printing machine works, under the action of the first positioning roller and the second positioning roller, the printing material can keep a horizontal and tensioned state and synchronously move with the printing material, wherein the horizontal state can enable all parts of the printing material to be attached to the printing table and supported by the printing table during printing; the tensioning state can ensure that the printing material cannot slide when the ink scraping knife or the ink returning knife scrapes ink on the printing material, so that the printing dislocation phenomenon can be prevented; the first positioning roller, the second positioning roller and the printing stock which synchronously move enable the printing stock not to be scraped by the rollers.
The working principle of the utility model is as follows:
during operation, the discharging device sends out the printing stock, and the printing stock sequentially reaches the printing device and the drying and winding device through the conveying device so as to complete the printing process, the drying process and the winding process.
In the printing device, the printing material moves to the upper part of the printing table, then the lifting driving mechanism acts to drive the printing table to move upwards to the topmost end, at the moment, the printing material is supported on the printing table, then the silk screen, the ink scraping knife and the ink returning knife in the machine head unit move downwards to carry out silk screen printing on the printing material, after the printing task is finished, the lifting driving mechanism acts again to drive the printing table to move downwards and separate from the printing material, then the material collecting roller and the material discharging roller rotate, the printed part of the printing material is sent out of the printing station (the position of the printing material in the printing process), and meanwhile, the part to be printed of the printing material is sent into the printing station, so that the printing action of a complete period is finished, at the moment, the printing material is not rubbed with the printing table in the conveying process because of the separation state between the printing material and the printing table, and the printing material is prevented from being scraped; and finally, the conveying device conveys the printing stock subjected to printing to the drying and winding device for drying and winding.
Compared with the prior art, the utility model has the following beneficial effects:
when the screen printer works, the lifting driving mechanism drives the printing table to lift so as to change the bonding state of the printing table and the printing material; during printing, the lifting driving mechanism drives the printing table to be in a bonding state with the printing material, so that the printing material can be bonded on the printing table naturally, and printing of the printing material in a non-deformed state is ensured; when the printing material is required to be conveyed, the lifting driving mechanism drives the printing table to be in a separation state with the printing material, so that the printing table cannot scrape the printing material. Therefore, the printed finished product does not have the phenomenon of scratching, is not easy to thin and thick and has the phenomenon of distortion of printed patterns, so that the printing quality is better.
Drawings
Fig. 1 is a schematic view of a screen printer of the present utility model.
Fig. 2 and 3 are schematic structural views (hidden head units) of the printing apparatus in fig. 1, wherein fig. 2 is a schematic structural view of a printing material in a conveying state, and fig. 3 is a schematic structural view of the printing material in a printing state.
Fig. 4 is a schematic structural diagram of the feeding and tensioning mechanism between the printing device and the drying and winding device shown in fig. 1.
Fig. 5 is a front view of the tension roller and guide roller of fig. 4.
Fig. 6 is a schematic perspective view of the tension roller and the guide roller of fig. 4.
Fig. 7 is a schematic perspective view of a tension roller of the feeding tension mechanism between the printing device and the discharging device in fig. 4.
Detailed Description
The present utility model will be described in further detail with reference to examples and drawings, but embodiments of the present utility model are not limited thereto.
Referring to fig. 1 to 7, the screen printer capable of preventing scratching comprises a discharging device A, a printing device B, a drying and winding device C and a conveying device for sequentially conveying printing materials in the discharging device A to the printing device B and the drying and winding device C, wherein the printing device B comprises a frame 1, a printing table 2 arranged on the frame 1, a lifting driving mechanism 3 for driving the printing table 2 to move up and down and a machine head unit, and the printing table 2 is arranged below the printing materials; the machine frame 1 at two ends of the printing table 2 is respectively provided with a first positioning roller 4 and a second positioning roller 5 for tensioning and positioning a printing material; when the printing table 2 moves to the bottommost end, a gap is provided between the printing material and the printing table 2, and when the printing table 2 moves to the topmost position, the printing material is attached to the printing table 2.
Referring to fig. 1-7, the screen printer further comprises a feeding tensioning mechanism D arranged between the discharging device a and the printing device B and a discharging tensioning mechanism E arranged between the drying and winding device C and the printing device B, wherein the feeding tensioning mechanism D and the discharging tensioning mechanism E each comprise a tensioning roller 8, a vertically arranged mounting rod 9 and a sliding piece 10 arranged on the mounting rod 9; the sliding piece 10 is connected to the mounting rod 9 through a linear sliding structure capable of sliding up and down; the printing stock conveyed from the discharging device A bypasses under a tensioning roller 8 of the feeding tensioning mechanism D and is continuously conveyed downwards to the printing table 2; the printing material sent out by the printing table 2 goes down, goes around from the lower part of the tensioning roller 8 of the discharging tensioning mechanism E and finally enters the drying and winding device C. The aim is that: 1. the printing materials at the two ends of the printing table 2 are tensioned through the feeding tensioning mechanism D and the discharging tensioning mechanism E, constant tension is provided, so that the printing materials cannot be soft, excessive deep drawing cannot be generated, and the printing quality is ensured. Wherein, the principle that material loading straining device D and ejection of compact straining device E provide stable tensioning force does: because the tensioning roller 8 is arranged between the mounting rods 9 and is fixedly connected to the sliding piece 10 which can slide up and down relative to the mounting rods 9, namely the tensioning roller 8 can move up and down along the mounting rods 9; when the printing material is wound from the lower part of the tensioning roller 8, the tensioning roller 8 is naturally pressed on the printing material under the action of gravity, and the printing material lifts the tensioning roller 8, so that the tensioning force borne by the printing material is the gravity of the tensioning roller 8, the printing material is in a constant tightening state and does not change along with the change of the speed of the driving roller, and printing can be ensured under a proper and constant tension state, and the printing quality is improved. Further, when the speed of conveyance becomes large, the printing material drives the tension roller 8 upward, so that the tension roller 8 moves upward along the mounting rod 9 by a certain distance, but the tension force to which the printing material is subjected is still the gravity of the tension roller 8, conversely, when the speed of conveyance becomes small, the printing material changes from a constant tightening state to a loosening state, and the tension roller 8 moves downward along the mounting rod 9 by a certain distance and continues to press on the printing material to provide a continuous stable tension force. In this way, the tensioning roller 8 can be pressed floatingly against the substrate, providing a stable tensioning force, irrespective of the speed of the transport, which is increased or decreased. 2. And this material loading straining device D and ejection of compact straining device E can also carry out the storage and the supply that only adapt to the printing stock, namely: when the speed of the printing material fed into the feeding tensioning mechanism D and the discharging tensioning mechanism E is larger than the speed of the printing material fed out, the length of the printing material in the feeding tensioning mechanism D and the discharging tensioning mechanism E is increased while the tension roller 8 is lowered to ensure constant tension of the printing material, so that the printing material is stored; when the speed of the printing materials fed into the feeding tensioning mechanism D and the discharging tensioning mechanism E is smaller than the speed of the printing materials fed out, the tensioning roller 8 is lifted to ensure that the printing materials have constant tension, and meanwhile, the lengths of the printing materials in the feeding tensioning mechanism D and the discharging tensioning mechanism E are reduced, so that the rapid feeding of the printing materials is realized; therefore, the device can adapt to different printing material conveying speeds.
Referring to fig. 4-7, the tensioning roller 8 in the discharging tensioning mechanism E is composed of a connecting shaft 8-1 and two rollers 8-2 rotatably connected to the connecting shaft 8-1, and the end of the connecting shaft 8-1 is fixedly connected to the sliding member 10. The tension roller 8 can solve the problem well because the printing ink on the printed printing stock is not dried, and if the printing ink is in direct contact with the conveying roller, the printing ink is easy to scratch, and the rollers 8-2 on two sides of the mounting shaft are pressed on the non-printing areas of the printing stock along two edges perpendicular to the conveying direction so as to avoid the printing areas on the printing stock, so that the printed content cannot be scratched in the conveying process.
Referring to fig. 4-7, the number of the tensioning rollers 8 is two, so that tensioning force can be increased, tensioning errors when the conveying speed is changed in a clockwise direction can be reduced, and printing materials can be conveyed more stably and smoothly.
Referring to fig. 4 to 7, both ends of the connecting shaft 8-1 of the two tension rollers 8 are fixed to the two sliders 10 so that the two tension rollers 8 can simultaneously perform vertical lifting movement along the mounting rod 9, floatingly providing a continuous stable tension to the printing material.
Referring to fig. 4 to 7, a first guide roller 11 is provided above the middle of the two tension rollers 8. The printing material is transferred from the transfer cylinder 13, around under the first tensioning roller 8, onto the first guiding roller 11, around under the second tensioning roller 8 from above the first guiding roller 11, and finally into the next station from below the second tensioning roller 8.
Referring to fig. 4-7, the periphery of the feeding tensioning mechanism D and the discharging tightening mechanism E is provided with a machine case 12, the mounting rod 9 is fixedly arranged in the machine case 12, and the machine case 12 is provided with the conveying device and the second guide roller 14. Through the structure, the machine case 12 can provide a certain accommodating space for the printing material, after printing, the conveying device drives the printing material to move towards the drying and winding device C, and after bypassing the tensioning roller 8, the printing material is conveyed into the drying and winding device C from the second guide roller 14.
Referring to fig. 2 and 3, the lifting driving mechanism 3 is formed by an air cylinder, wherein the cylinder body of the air cylinder is fixed on the frame 1, and the telescopic shaft of the air cylinder is connected with the printing table 2 through a connecting plate. When the printing machine works, the telescopic shaft of the air cylinder drives the printing table 2 connected with the telescopic shaft to conduct lifting movement through telescopic action, so that the bearing and separation of printing materials and the working table are achieved.
Referring to fig. 2 and 3, a sliding guide rail pair is further arranged between the printing table 2 and the frame 1, wherein a guide rail 6 of the sliding guide rail pair is vertically arranged on the frame 1, and the printing table 2 is arranged on a sliding block 7 in the sliding guide rail pair. During operation, the sliding guide rail pair can accurately guide the lifting motion of the printing table 2, and meanwhile friction in the motion process of the printing table 2 can be reduced, so that the lifting motion of the printing table 2 is smoother.
Referring to fig. 2 and 3, the sliding guide pairs are multiple groups, and the multiple groups of sliding guide pairs are symmetrically arranged about the printing table 2. During operation, the plurality of groups of symmetrically arranged sliding guide rail pairs can ensure that each point of the printing table 2 synchronously performs lifting movement, so that the printing table 2 is kept in a horizontal state. The purpose of this is that, during printing, when the printing table 2 is in an inclined state, the printing table 2 cannot support the printing material when the doctor blade presses the printing material, which may lead to a printing failure, so that it is important that the printing table 2 is kept in a horizontal state.
Referring to fig. 2 and 3, the first positioning roller 4 and the second positioning roller 5 are symmetrically arranged with respect to the printing table 2, and the first positioning roller 4 and the second positioning roller 5 are rotatably connected with the frame 1. When the printing machine works, under the action of the first positioning roller 4 and the second positioning roller 5, the printing material can keep a horizontal and tensioned state and synchronously move with the printing material, wherein the horizontal state can enable all parts of the printing material to be attached to the printing table 2 and supported by the printing table 2 during printing; the tensioning state can ensure that the printing material cannot slide when the ink scraping knife or the ink returning knife scrapes ink on the printing material, so that the printing dislocation phenomenon can be prevented; the first positioning roller 4, the second positioning roller 5 and the printing stock which move synchronously enable the printing stock not to be scraped by the roller 8-2.
Referring to fig. 1-7, the working principle of the utility model is:
during operation, the discharging device A sends out printing materials, and the printing materials sequentially reach the printing device B and the drying and winding device C through the conveying device so as to complete the printing process, the drying process and the winding process.
In the printing device B, the printing material moves to the upper part of the printing table 2, then the lifting driving mechanism 3 acts to drive the printing table 2 to move upwards to the topmost end, at the moment, the printing material is supported on the printing table 2, then the silk screen, the scraping knife and the ink returning knife in the machine head unit move downwards to carry out silk screen printing on the printing material, after the printing task is completed, the lifting driving mechanism 3 acts again to drive the printing table 2 to move downwards and separate from the printing material, then the material collecting roller 8-2 and the material discharging roller 8-2 rotate, the printed part of the printing material is sent out of the printing station (the position of the printing material during printing), and meanwhile, the printing part to be printed of the printing material is entered into the printing station, so that the printing action of a complete period is completed, and the printing material is not rubbed with the printing table 2 in the conveying process because the printing material is in a separated state, and the scraping of the printing material is avoided; and finally, conveying the printed printing material to a drying and rolling device C by the conveying device for drying and rolling.
The foregoing is illustrative of the present utility model and is not to be construed as limiting thereof, but rather as various changes, modifications, substitutions, combinations, and simplifications which may be made therein without departing from the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (4)
1. The screen printer comprises a discharging device, a printing device, a drying and winding device and a conveying device for sequentially conveying printing materials in the discharging device to the printing device and the drying and winding device, and is characterized in that,
the printing device comprises a frame, a printing table arranged on the frame, a lifting driving mechanism for driving the printing table to move up and down and a machine head unit, wherein the printing table is arranged below a printing material; the machine frames at two ends of the printing table are respectively provided with a first positioning roller and a second positioning roller for tensioning and positioning the printing material; when the printing table moves to the topmost position, the printing material is attached to the printing table;
the device comprises a discharging device, a printing device, a discharging winding device, a discharging tensioning mechanism and a discharging device, wherein the discharging device is arranged between the discharging device and the printing device; the sliding piece is connected to the mounting rod through a linear sliding structure capable of sliding up and down; the printing stock conveyed from the discharging device bypasses under a tensioning roller of the feeding tensioning mechanism and is continuously conveyed to the printing table downwards; the printing stock sent out by the printing table is wound around from the lower part of a tensioning roller of the discharging tensioning mechanism after extending downwards, and finally enters the drying and winding device;
the tensioning roller in the discharging tensioning mechanism consists of a connecting shaft and two rollers which are rotationally connected to the connecting shaft, and the end part of the connecting shaft is fixedly connected to the sliding part;
the number of the tensioning rollers is two;
both ends of the connecting shaft of the two tensioning rollers are fixed on the two sliding parts;
a first guide roller is arranged above the middle of the two tensioning rollers;
and a sliding guide rail pair is further arranged between the printing table and the frame, wherein a guide rail of the sliding guide rail pair is vertically arranged on the frame, and the printing table is arranged on a sliding block in the sliding guide rail pair.
2. The screen printer of claim 1, wherein the lifting driving mechanism is composed of a cylinder, wherein a cylinder body of the cylinder is fixed on the frame, and a telescopic shaft of the cylinder is connected with the printing table through a connecting plate.
3. The scratch-resistant screen printer of claim 1, wherein the plurality of pairs of sliding rails are symmetrically disposed about the printing station.
4. The scratch resistant screen printer of claim 1, wherein the first and second positioning rollers are symmetrically disposed about the printing table, the first and second positioning rollers being rotatably coupled to the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810246101.5A CN108297532B (en) | 2018-03-23 | 2018-03-23 | Prevent screen printer of scraping flower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810246101.5A CN108297532B (en) | 2018-03-23 | 2018-03-23 | Prevent screen printer of scraping flower |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108297532A CN108297532A (en) | 2018-07-20 |
| CN108297532B true CN108297532B (en) | 2023-12-29 |
Family
ID=62846655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810246101.5A Active CN108297532B (en) | 2018-03-23 | 2018-03-23 | Prevent screen printer of scraping flower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108297532B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109228632A (en) * | 2018-11-07 | 2019-01-18 | 湖州傲娇小公举服饰有限公司 | A kind of printing device convenient for chemical fabric |
| CN109605917B (en) * | 2019-01-30 | 2024-03-29 | 温州欧宏机械有限公司 | Silk screen printing machine |
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