CN109591459B - Large-scale digital printing machine - Google Patents
Large-scale digital printing machine Download PDFInfo
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- CN109591459B CN109591459B CN201811440593.8A CN201811440593A CN109591459B CN 109591459 B CN109591459 B CN 109591459B CN 201811440593 A CN201811440593 A CN 201811440593A CN 109591459 B CN109591459 B CN 109591459B
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- paper
- adjusting
- roller
- printing machine
- circuit board
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
- B41J25/003—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for changing the angle between a print element array axis and the printing line, e.g. for dot density changes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/304—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface
- B41J25/308—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms
- B41J25/3086—Bodily-movable mechanisms for print heads or carriages movable towards or from paper surface with print gap adjustment mechanisms with print gap adjustment means between the print head and its carriage
Abstract
The invention provides a large-scale digital printing machine, which comprises a rack, an ink car and a take-up and pay-off roller system, wherein a base adjusting structure is arranged on the ink car and used for adjusting the angle of a base; the spray head adjusting structure is used for adjusting the distance and the position of the spray heads; the height adjusting structure is used for adjusting the printing height of the spray head; the circuit board structure can reduce the interference degree of the circuit board from the external environment; the take-up and pay-off roller system and the air suction assembly are used for balancing the paper feeding stability and the paper collection stability; an adsorption panel for tensioning a surface of the paper; the high-precision frame structure weakens the degree of dependence on high-precision sectional materials; the large-scale digital printing machine has the advantages of simple and efficient overall structure, improved performance and higher stability.
Description
Technical Field
The invention relates to a large-scale digital printing machine, and belongs to the field of printing equipment.
Background
In large-scale digital printing machine, because equipment structure is enough big, the spare part equipment that can hold is more, and the relative complicacy that many designs also can be done leads to equipment overall cost higher firstly, and assembly error appears easily in the assembling process secondly, and because the mutual stack of assembly error, finally leads to overall error big, the adjustment degree of difficulty height.
Among the mechanisms to be adjusted, the adjustment mechanisms of the carriage and the adjustment mechanisms of the frame are particularly important, one relating to the printing accuracy and one relating to the running accuracy of the whole printer, but these adjustment mechanisms are too complicated in design and are disadvantageous for long-distance transportation and assembly.
In addition, in a large-scale digital printing machine, the distance span between rollers of a roller system is large, especially in the paper collection process, the large span can cause the supporting rollers at two sides to provide tension, so that the middle paper is wrinkled, and the rolling effect is influenced.
In the frame, because the precision demand is high, the precision demand to the section bar is also high, but high accuracy, large size section bar, especially crossbeam, the price is much higher than small-size section bar, is very unfriendly to the market competition and the location of large-scale digital calico printing machine.
In order to solve the above problems, people are always seeking an ideal technical solution.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides a large-scale digital printing machine which is simple in overall structure, high in efficiency, improved in performance and higher in stability.
In order to achieve the purpose, the invention adopts the technical scheme that: a large-scale digital printing machine comprises a frame, an ink car and a take-up and pay-off roller system, wherein the ink car is provided with:
the base adjusting structure comprises an ink car bracket and a base for mounting a spray head, wherein the base is rectangular, one corner of the base is rotatably connected to one corner of the ink car bracket through a hinge column, the other corner of the base is provided with a first adjusting knob, a first rectangular hole with the longitudinal length larger than the transverse length is arranged on the ink car bracket corresponding to the first adjusting knob, the main body of the first adjusting knob is an eccentric cylinder, an eccentric shaft of the first adjusting knob is rotatably mounted on the ink car bracket, the first adjusting knob is tangent to the transverse two sides of the first rectangular hole, the other two corners of the base are provided with arc adjusting long holes, the arc of each arc adjusting long hole is an arc with the hinge column as the center of a circle, and the ink car bracket is provided with threaded holes corresponding to the adjusting long holes;
the spray head adjusting structure comprises a plurality of parallel longitudinal channels arranged on a base, a spray head seat is arranged in each channel, a pulley is arranged on one side of each channel, two sides of the spray head seat are respectively abutted against the pulley and the other side of each channel, a second rectangular hole with the width larger than the longitudinal size is arranged at one longitudinal end of the spray head seat, a second adjusting knob is arranged in each second rectangular hole, the main body of each second adjusting knob is an eccentric cylinder, an eccentric shaft of each second adjusting knob is rotatably arranged on the base, and the second adjusting knobs are tightly attached to the two longitudinal sides of the second rectangular holes;
the height adjusting structure comprises a carriage support and a back plate, wherein the carriage support comprises support plates on two sides and an adjusting panel on the back side, the back side of the adjusting panel is provided with a vertical sliding groove adapted to the width of the back plate, the width of the sliding groove is greater than one half of the width of the adjusting panel, a plurality of positioning holes are uniformly distributed in the back plate, a plurality of longitudinally extending stroke long holes are formed in the adjusting panel corresponding to the positioning holes, the stroke long holes and the positioning holes are fastened together through bolt and nut assemblies, and a sliding block is installed at the back of the back plate.
The ink jet printing device comprises a circuit board structure, wherein the circuit board structure comprises a back plate, a suspension, a circuit board mounting frame and an ink chain, a sliding block is mounted on the back plate, the suspension is used for connecting the back plate and the circuit board mounting frame, the circuit board mounting frame is vertically arranged integrally, the ink chain is mounted on one horizontal side of the circuit board mounting frame, and the ink chain is bent in a horizontal plane; the suspension is L-shaped, the shorter end of the L-shaped suspension is fixed at the upper end of the back plate, and the long end of the L-shaped suspension is used for mounting the circuit board mounting rack; the circuit board mounting frame comprises a bottom plate and a cover plate, a plurality of positioning columns are uniformly distributed on the periphery of the bottom plate, mounting holes are formed in the cover plate corresponding to the positioning columns, and a circuit board mounting space is formed between the bottom plate and the cover plate.
Basically, receive and release the roller system including putting paper roller set, collection roller set and paper feed balance roll, the end of putting paper roller set is located to the paper feed balance roll, the paper feed balance roll includes the pendulum rod and installs the gravity roller at pendulum rod swing end, and the paper is through putting paper roller set back coiling process the gravity roller reentrants print platform.
Basically, the collection roller set includes an air suction assembly and a damping roller, the air suction assembly is arranged in a large-span area in the collection roller set, the direction of an air suction opening of the air suction assembly is perpendicular to the advancing direction of paper, and the damping roller is arranged behind the air suction assembly.
Basically, the place ahead of the subassembly that induced drafts is equipped with a pendulum rod formula tension roller, put the paper roller group and still including putting paper roll, first paper roll of winding, the scroll is located put and arrive after first paper roll of winding on the paper roll paper feed balance roller, the paper roll group still includes paper receiving roll and second paper roll of winding, and the paper passes through in proper order after coming out from print platform pendulum rod formula tension roller the second is around the paper roll the subassembly that induced drafts convolute behind the damping roller on the paper receiving roll.
Basically, the subassembly that induced drafts includes the box, installs air exhauster in the box and locating the case lid of terminal surface under the box, the equipartition is porose on the case lid.
Basically, it is still including installing the adsorption panel on print platform, adsorption panel installs on the up end of bellows, the inside hollow structure that is of bellows, and the fan is installed in the bellows or through the pipeline intercommunication of drawing air bellows, the last equipartition of adsorption panel has the bleeder vent, sets up the shallow slot between the adjacent bleeder vent, the degree of depth of shallow slot is less than the thickness of adsorption panel, adjacent bleeder vent passes through the shallow slot intercommunication.
Basically, each shallow slot is obliquely arranged from two ends to the middle along a straight line, and the shallow slots in the middle are intersected to form a sharp corner shape.
Basically, the frame includes two piece at least crossbeams, a plurality of bottom cushion, a plurality of top cushion and a plurality of tie-beam, the tie-beam is connected and is formed the girder between two adjacent crossbeams, the bottom cushion is installed meet the department with the base on the lower terminal surface of crossbeam, the lower terminal surface of bottom cushion is located the coplanar, the top cushion is laid in the up end of girder, the top cushion spanes on each the crossbeam, and the up end of each top cushion is located the coplanar.
The end part of the top cushion block is fixed on the cross beam through a bolt, a plurality of steps are arranged on the top cushion block, and the heights of the steps are consistent.
Compared with the prior art, the invention has outstanding substantive characteristics and remarkable progress, and concretely, the invention improves the whole adjusting structure of the ink car part, specifically, in the adjusting structure of the base, the whole base is used as the whole adjusting angle, the adjusting structure is simplified, a hinged column of one corner is used as the circle center, a first adjusting knob of the other corner is used as the adjusting structure, and the other corners are provided with arc-shaped adjusting long holes for matching adjustment and integrally controlling the angle of the ink car base; precision control of china ink car shower nozzle, utilize a plurality of channels that set up in the base, the depth of parallelism between the nozzle seat has been confirmed to the depth of parallelism of channel, angle and width between the shower nozzle all need not readjustment promptly, then set up vertical position control structure, second adjust knob and pulley promptly, the effect of pulley is guaranteed that the nozzle seat can move, second adjust knob adopts eccentric cylinder, the accommodation is the diameter of the circle that the most distant point of eccentric cylinder was drawn, only need during the regulation twist move the knob can, through twisting the knob, adjust the vertical position of shower nozzle.
In the roller system, add the subassembly that induced drafts, in the region of large-span, the paper passes through, through the suction force, hug closely the back of paper on the inlet scoop of the module that induced drafts, bear the gravity of a part of paper, connect a damping roller afterwards, the damping force through the damping roller replaces and offsets outside tensile force, both combine, with the atress dispersion of paper, a part acts on the inlet scoop of the module that induced drafts, another part acts on the damping roller, at first, the too big span has been avoided appearing in the paper, secondly, the problem that the uneven paper atress leads to the fold has been solved.
The reason of adsorbing the panel is the same, through the trompil, produces the negative pressure, inhales tight paper, through the fluting, with intercommunication between each hole, increase the circulation route and the flow area of wind, just also increased adsorption area, adsorption effect is better.
In the frame, install a plurality of bottom cushions on the lower terminal surface of crossbeam, then the crossbeam that will install the bottom cushion is processed on same machining center, make the lower terminal surface of each bottom cushion be in the coplanar, as the smooth basis of crossbeam, the top is owing to need install aircraft nose equipment, through the mode of laying the top cushion, process the top cushion at same machining center simultaneously, make the up end of top cushion be in the coplanar, then install each part on the aircraft nose on the top cushion, ensure that the installation basis of aircraft nose is level and smooth, through the structure reform transform more than, the reliance to the high accuracy crossbeam has been avoided, the cost of manufacture is reduced, the frame precision is improved.
Drawings
Fig. 1 is a schematic diagram of the overall structure of a large-scale digital printing machine according to the invention.
Fig. 2 is a schematic structural diagram of a base adjustment structure according to the present invention.
Fig. 3 is a schematic structural diagram of a nozzle adjustment structure according to the present invention.
FIG. 4 is a second schematic structural view of the nozzle adjustment structure of the present invention.
Fig. 5 is a schematic structural view of the height adjusting structure of the present invention.
Fig. 6 is a schematic structural diagram of a circuit board structure according to the present invention.
Fig. 7 and 8 are schematic views of the structure of the roller system of the present invention.
Fig. 9 is a schematic structural view of the adsorption panel of the present invention.
Fig. 10 is a partially enlarged view of fig. 9.
Fig. 11 is a schematic structural view of a frame structure in the present invention.
In the figure: 1. a frame; 2. an ink vehicle; 3. a take-up and pay-off roller system; 4. a base adjustment structure; 4-1. carriage support; 4-2. a base; 4-4, hinging the column; 4-5, a first adjusting knob; 4-6, a first rectangular hole; 4-7, arc-shaped adjusting long holes; 5-1, a channel; 5-2, a spray head seat; 5-3, a pulley; 5-4, a second rectangular hole; 5-5. a second adjusting knob; 6-1. a back plate; 6-2, adjusting the panel; 6-3, a chute; 6-4, a stroke long hole; 6-5, positioning holes; 7-1. suspension; 7-2, mounting a circuit board; 7-3. ink chain; 7-4. a bottom plate; 7-5. a cover plate; 8. a paper feed balance roller; 8-1, oscillating bar; 8-2, a gravity roller; 9. paper; 10. an air suction assembly; 11. a damping roller; 12. a swing link type tension roller; 13. paper placing rollers; 14. a first winding roller; 15. a paper collecting roller; 16. a second winding roller; 17-1. a bellows; 17-2. adsorption panel; 17-3, air holes; 17-4 shallow grooves.
Detailed Description
The technical solution of the present invention is further described in detail by the following embodiments.
As shown in fig. 1, a large digital printing machine includes a frame 1, an ink carriage 2 and a take-up and pay-off roller system 3, wherein the ink carriage 2 has:
the base adjusting structure 4, as shown in fig. 2-4, comprises a carriage support 4-1 and a base 4-2 for mounting a nozzle, wherein the base 4-2 is rectangular, one corner of the base 4-2 is rotatably connected to one corner of the carriage support 4-1 through a hinge post 4-4, the other corner of the base 4-2 is provided with a first adjusting knob 4-5, the carriage support 4-1 is provided with a first rectangular hole 4-6 having a longitudinal length greater than a transverse length corresponding to the first adjusting knob 4-5, a main body of the first adjusting knob 4-5 is an eccentric cylinder, an eccentric shaft of the first adjusting knob 4-5 is rotatably mounted on the carriage support 4-1, the first adjusting knob 4-5 is tangent to two transverse sides of the first rectangular hole 4-6, arc-shaped adjusting long holes 4-7 are formed in the other two corners of the base 4-2, the arc of each arc-shaped adjusting long hole 4-7 is an arc with the hinge column 4-4 as the center of a circle, and threaded holes are formed in the ink vehicle support 4-1 corresponding to the adjusting long holes.
And (3) adjusting: the first adjusting knob 4-5 is screwed, the eccentric cylinder rotates in the first rectangular hole 4-6, the base 4-2 moves along the transverse direction of the first rectangular hole due to the limitation of the first rectangular hole 4-6, the base 4-2 rotates around the hinge post 4-4 substantially due to the limitation of the hinge post 4-4, the arc adjusting long hole 4-7 is used for adapting to the rotating process, and the eccentric cylinder is fastened by a bolt after the rotation.
As shown in fig. 3-4, the nozzle adjusting structure includes a plurality of parallel longitudinal channels 5-1 disposed on a base 4-2, a nozzle seat 5-2 is disposed in the channel 5-1, a pulley 5-3 is disposed on one side of the channel 5-1, two sides of the nozzle seat 5-2 respectively abut against the pulley 5-3 and the other side of the channel 5-1, a second rectangular hole 5-4 having a width greater than a longitudinal dimension is disposed at a longitudinal end of the nozzle seat 5-2, a second adjusting knob 5-5 is mounted in the second rectangular hole 5-4, a main body of the second adjusting knob 5-5 is an eccentric cylinder, an eccentric shaft of the second adjusting knob 5-5 is rotatably mounted on the base 4-2, the second adjusting knob 5-5 is tightly attached to the two longitudinal sides of the second rectangular hole 5-4.
The adjustment principle is as follows: the processing of the base 4-2 is most important, the parallelism of each channel 5-1 in the base 4-2 is guaranteed, the flatness of the bottom surface is guaranteed, and the precision of the base 4-2 determines the final precision of the spray head seat 5-2; the side edges of the channel 5-1 can ensure that the bases of the nozzle bases 5-2 are uniform and parallel to each other, so that the problem of angle is solved; the fixed distance of the channel 5-1 can ensure that the distance of the nozzle seat 5-2 is uniform without adjustment; the longitudinal position of the nozzle seat 5-2 only needs to be adjusted, the longitudinal position is adjusted by means of the second adjusting knob 5-5, the eccentric position changes along with the rotation of the second adjusting knob 5-5, the nozzle seat is driven to longitudinally move in the channel, and the adjusting stroke is the diameter of a circle where the eccentric end of the adjusting knob 5-5 runs.
As shown in fig. 5 and 6, the height adjusting structure, including the carriage 4-1 and the back plate 6-1, the ink vehicle support 4-1 comprises support plates at two sides and an adjusting panel 6-2 at the rear side, the rear side of the adjusting panel 6-2 is provided with a vertical chute 6-3 which is adapted to the width of the back plate 6-1, the width of the sliding groove 6-3 is larger than one half of the width of the adjusting panel 6-2, a plurality of positioning holes are uniformly distributed on the back plate 6-1, a plurality of longitudinally extending stroke long holes 6-4 are arranged on the adjusting panel 6-2 corresponding to the positioning holes, the stroke long hole 6-4 and the positioning hole 6-5 are fastened together through a bolt and nut assembly, and a sliding block is installed on the back of the back plate 6-1.
And (3) adjusting: if the height of the ink vehicle support 4-1 needs to be adjusted, firstly, the bolt is loosened, a cushion block with the corresponding height is placed below the ink vehicle support 4-1, then, the lower end of the ink vehicle support 4-1 is flatly attached to the upper end of the cushion block, in the process, the adjusting panel 6-2 and the back plate 6-1 slide relatively through the sliding groove 6-3, and after the bolt is adjusted in place, the bolt is screwed.
As shown in fig. 6, it also includes a modification of the circuit board structure, the circuit board structure includes the back plate 6-1, a suspension 7-1, a circuit board mounting rack 7-2 and an ink chain 7-3, the back plate 6-1 is provided with a slide block, the suspension 7-1 is used for connecting the back plate 6-1 and the circuit board mounting rack 7-2, the circuit board mounting rack 7-2 is arranged vertically as a whole, the ink chain 7-3 is arranged on the horizontal side of the circuit board mounting rack 7-2, and the bending of the ink chain 7-3 is in the horizontal plane; the suspension 7-1 is L-shaped, the shorter end of the L-shaped suspension 7-1 is fixed at the upper end of the back plate 6-1, and the long end of the L-shaped suspension 7-1 is used for mounting the circuit board mounting rack 7-2; the circuit board mounting frame 7-2 comprises a bottom plate 7-4 and a cover plate 7-5, a plurality of positioning columns 7-6 are uniformly distributed on the periphery of the bottom plate 7-4, mounting holes are formed in the cover plate 7-5 corresponding to the positioning columns 7-6, and a circuit board mounting space is formed between the bottom plate 7-4 and the cover plate 7-5.
The design principle is as follows: the traditional top-laid circuit board is modified into a rear-mounted circuit board, the ink car bracket and the circuit board are respectively arranged on the front side and the rear side of the track, when the circuit board is maintained and overhauled, the circuit board can be directly operated after standing on the rear side of the equipment without the shielding of the track, and compared with the current situation that the circuit board needs to be climbed in a top-mounted mode, the process is simpler; in addition, due to the vertical arrangement of the circuit board mounting frame 7-2, the phenomenon that the function of the circuit board is affected or even short circuit is caused by nesting or drainage of small animals on the circuit board is prevented, and the cover plate 7-5 is added, so that the possibility is further avoided; the ink chain is vertically arranged, the overlapping positions are overlapped on the horizontal plane instead of being overlapped in the vertical direction, jumping is not easy to occur in the moving process, and the stability of the ink car can be guaranteed.
As shown in fig. 7 and 8, the collecting and releasing roller system includes a paper releasing roller set, a paper collecting roller set and a paper feeding balance roller 8, the paper feeding balance roller 8 is disposed at the tail end of the paper releasing roller set, the paper feeding balance roller 8 includes a swing rod 8-1 and a gravity roller 8-2 installed at the swing end of the swing rod, and the paper 9 is wound through the paper releasing roller set, passes through the gravity roller and then enters the printing platform. In the process, the paper 9 is wound by the gravity roller 8-2, so that the tension of the paper is more stable, the accurate control of the paper feeding speed is not needed, and the entering angles of the paper are basically consistent after passing through the gravity roller 1-2, thereby having a better foundation for ensuring the printing quality.
The paper collection roller set comprises an air suction assembly 10 and a damping roller 11, the air suction assembly 10 is arranged in a large-span area in the paper collection roller set, the direction of an air suction opening of the air suction assembly 10 is perpendicular to the advancing direction of paper 9, and the damping roller 11 is arranged behind the air suction assembly 10. The place ahead that induced drafts subassembly 10 is equipped with a pendulum rod formula tension roller 12, it still includes paper releasing roll 13, first paper winding roll 14 to put the paper roll, and the scroll is located paper releasing roll 13 goes up and reachs after first paper winding roll 14 paper feed balance roller 8, the collection roller group still includes paper receiving roll 15 and second paper winding roll 16, and paper 9 passes through in proper order after coming out from print platform pendulum rod formula tension roller 12 the second paper winding roll 16 induced draft subassembly 10 convolute behind damping roller 11 on the paper receiving roll 15. The air suction assembly 10 comprises a box body 10-1, an exhaust fan 10-2 arranged in the box body 10-1 and a box cover 10-3 arranged on the lower end face of the box body, wherein holes are uniformly distributed in the box cover.
The working process is as follows: the paper that comes out from print platform at first through pendulum rod formula tension roller 12 and second around paper roll 16, stretches out the paper moderate degree, when the large-span region is being passed through, the inlet scoop orientation of the subassembly 10 that induced drafts is perpendicular with the direction of travel of paper 9, and the back of paper 9 is adsorbed at the inlet scoop of the subassembly 10 that induced drafts, offsets the gravity influence of a part of paper, damping roller 11 locates the rear of the subassembly 10 that induced drafts, the atress of a part of paper is offset to the frictional force of damping roller 11 for the paper atress is more balanced, is difficult for taking place the fold in the large-span region.
As shown in fig. 9 and 10, the printing device further comprises an adsorption panel 17-2 installed on the printing platform, the adsorption panel 17-2 is installed on the upper end face of the air box 17-1, the interior of the air box 17-1 is of a hollow structure, the fan is installed in the air box or communicated with the air box through a draught pipeline, air holes 17-3 are uniformly distributed on the adsorption panel 17-2, shallow grooves 17-4 are formed between adjacent air holes, the depth of each shallow groove 17-4 is smaller than the thickness of the adsorption panel 17-2, and the adjacent air holes are communicated through the shallow grooves 17-4. Each shallow groove 17-4 is arranged obliquely from two ends to the middle along a straight line, and the shallow grooves in the middle are intersected to form a sharp corner shape.
The structure principle is as follows: negative pressure is formed in the air box 17-1, air enters the air box from the air holes 17-3, so that a negative pressure environment is formed on the upper end face of the adsorption panel 17-2, when paper passes through, the paper is tightly attached to the upper end face of the adsorption panel 17-2 under the action of the negative pressure, in order to increase the adsorption effect, shallow grooves 17-4 are formed between adjacent air holes to communicate the air holes, and air flow flows in the shallow grooves, so that the effective area of the negative pressure is increased, and the adsorption effect is greatly improved.
The shallow groove 17-4 is obliquely arranged to maximize the effective area and facilitate processing.
As shown in fig. 11, the rack includes at least two cross beams 18, a plurality of bottom pads 19, a plurality of top pads 20, and a plurality of connecting beams 21, the connecting beams 21 are connected between two adjacent cross beams 18 to form a main beam, the bottom pads 19 are mounted on the lower end surfaces of the cross beams 18 and connected to the base, the lower end surfaces of the bottom pads 19 are located in the same plane, the top pads 20 are laid on the upper end surfaces of the main beams, the top pads 20 span over the cross beams 18, and the upper end surfaces of the top pads 20 are located in the same plane. The end part of the top cushion block 20 is fixed on the cross beam through a bolt, a plurality of steps are arranged on the top cushion block 20, and the heights of the steps are consistent.
The original intention of design like this is in order to avoid the degree of dependence to the high accuracy crossbeam, and in the purchase process, can choose the lower crossbeam of precision for use, then comes the adjustment precision through top cushion and bottom cushion.
After the top cushion block and the bottom cushion block are installed, the structure needs to be placed into a machining center for re-machining, in the process, because the relative area of the top cushion block and the bottom cushion block relative to the upper side face and the lower side face of the cross beam is smaller, machining is relatively easy, in addition, the machining requirement on the cross beam is higher, the position of the cross beam is easily thinned, the cross beam is easily broken, the horizontal plane is machined out more easily through the compensation of the cushion blocks, and the operation difficulty is lower.
Finally, it should be noted that the above examples are only used to illustrate the technical solutions of the present invention and not to limit the same; although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (10)
1. A large-scale digital printing machine comprises a frame, an ink vehicle and a take-up and pay-off roller system, and is characterized in that: the ink vehicle is provided with:
the base adjusting structure comprises an ink car bracket and a base for mounting a spray head, wherein the base is rectangular, one corner of the base is rotatably connected to one corner of the ink car bracket through a hinge column, the other corner of the base is provided with a first adjusting knob, a first rectangular hole with the longitudinal length larger than the transverse length is arranged on the ink car bracket corresponding to the first adjusting knob, the main body of the first adjusting knob is an eccentric cylinder, an eccentric shaft of the first adjusting knob is rotatably mounted on the ink car bracket, the first adjusting knob is tangent to the transverse two sides of the first rectangular hole, the other two corners of the base are provided with arc adjusting long holes, the arc of each arc adjusting long hole is an arc with the hinge column as the center of a circle, and the ink car bracket is provided with threaded holes corresponding to the adjusting long holes;
the spray head adjusting structure comprises a plurality of parallel longitudinal channels arranged on a base, a spray head seat is arranged in each channel, a pulley is arranged on one side of each channel, two sides of the spray head seat are respectively abutted against the pulley and the other side of each channel, a second rectangular hole with the width larger than the longitudinal size is arranged at one longitudinal end of the spray head seat, a second adjusting knob is arranged in each second rectangular hole, the main body of each second adjusting knob is an eccentric cylinder, an eccentric shaft of each second adjusting knob is rotatably arranged on the base, and the second adjusting knobs are tightly attached to the two longitudinal sides of the second rectangular holes;
the height adjusting structure comprises a carriage support and a back plate, wherein the carriage support comprises support plates on two sides and an adjusting panel on the back side, the back side of the adjusting panel is provided with a vertical sliding groove adapted to the width of the back plate, the width of the sliding groove is greater than one half of the width of the adjusting panel, a plurality of positioning holes are uniformly distributed in the back plate, a plurality of longitudinally extending stroke long holes are formed in the adjusting panel corresponding to the positioning holes, the stroke long holes and the positioning holes are fastened together through bolt and nut assemblies, and a sliding block is installed at the back of the back plate.
2. A large digital printing machine according to claim 1, characterized in that: the circuit board structure comprises a back plate, a suspension, a circuit board mounting frame and an ink chain, wherein a sliding block is mounted on the back plate, the suspension is used for connecting the back plate and the circuit board mounting frame, the circuit board mounting frame is vertically arranged integrally, the ink chain is mounted on one horizontal side of the circuit board mounting frame, and the ink chain is bent in a horizontal plane; the suspension is L-shaped, the shorter end of the L-shaped suspension is fixed at the upper end of the back plate, and the long end of the L-shaped suspension is used for mounting the circuit board mounting rack; the circuit board mounting frame comprises a bottom plate and a cover plate, a plurality of positioning columns are uniformly distributed on the periphery of the bottom plate, mounting holes are formed in the cover plate corresponding to the positioning columns, and a circuit board mounting space is formed between the bottom plate and the cover plate.
3. A large digital printing machine according to claim 1 or 2, characterized in that: the paper collecting and releasing roller system comprises a paper placing roller set, a paper collecting roller set and a paper feeding balance roller, the paper feeding balance roller is arranged at the tail end of the paper placing roller set, the paper feeding balance roller comprises a swing rod and a gravity roller arranged at the swing end of the swing rod, and paper is wound after the paper placing roller set and passes through the gravity roller and then enters the printing platform.
4. A large digital printing machine according to claim 3, characterized in that: the paper collection roller set comprises an air suction assembly and a damping roller, the air suction assembly is arranged in a large-span area in the paper collection roller set, the direction of an air suction opening of the air suction assembly is perpendicular to the advancing direction of paper, and the damping roller is arranged behind the air suction assembly.
5. A large-scale digital printing machine according to claim 4, characterized in that: the place ahead of the subassembly that induced drafts is equipped with a pendulum rod formula tension roller, it still includes paper releasing roll, the first paper roll that winds to put the paper roll group, and the scroll is located reach after paper feeding balance roller on the paper releasing roll and via the first paper roll that winds, the paper collecting roll group still includes paper collecting roll and second paper roll that winds, and the paper passes through in proper order after coming out from print platform pendulum rod formula tension roller the second paper roll wind the subassembly that induced drafts convolute behind the damping roller on the paper collecting roll.
6. A large digital printing machine according to claim 4 or 5, characterized in that: the air suction assembly comprises a box body, an air exhauster arranged in the box body and a box cover arranged on the lower end face of the box body, and holes are uniformly distributed in the box cover.
7. A large-scale digital printing machine according to claim 6, characterized in that: it is still including installing the adsorption panel on print platform, adsorption panel installs on the up end of bellows, the inside hollow structure that is of bellows, and the fan is installed in the bellows or through the exhaust pipe intercommunication bellows, the last equipartition of adsorption panel has the bleeder vent, sets up the shallow slot between the adjacent bleeder vent, the degree of depth of shallow slot is less than the thickness of adsorption panel, adjacent bleeder vent passes through the shallow slot intercommunication.
8. A large digital printing machine according to claim 7, characterized in that: each shallow slot is obliquely arranged from two ends to the middle along a straight line, and the shallow slots positioned in the middle are intersected to form a sharp corner shape.
9. A large digital printing machine according to claim 8, characterized in that: the frame includes two piece at least crossbeams, a plurality of bottom cushion, a plurality of top cushion and a plurality of tie-beam, the tie-beam is connected and is formed the girder between two adjacent crossbeams, the bottom cushion is installed meet the department with the base on the lower terminal surface of crossbeam, the lower terminal surface of bottom cushion is located the coplanar, the top cushion is laid in the up end of girder, the top cushion spanes each on the crossbeam, the up end of each top cushion is located the coplanar.
10. A large digital printing machine according to claim 9, characterized in that: the end part of the top cushion block is fixed on the cross beam through a bolt, a plurality of steps are arranged on the top cushion block, and the heights of the steps are consistent.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811440593.8A CN109591459B (en) | 2018-11-29 | 2018-11-29 | Large-scale digital printing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811440593.8A CN109591459B (en) | 2018-11-29 | 2018-11-29 | Large-scale digital printing machine |
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| Publication Number | Publication Date |
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| CN109591459A CN109591459A (en) | 2019-04-09 |
| CN109591459B true CN109591459B (en) | 2020-04-03 |
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| CN201811440593.8A Active CN109591459B (en) | 2018-11-29 | 2018-11-29 | Large-scale digital printing machine |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110154615B (en) * | 2019-04-30 | 2024-03-22 | 胡锡文 | Automatic pixel printing machine |
| CN114161830B (en) * | 2021-09-15 | 2023-03-28 | 河南印都数码科技有限公司 | Industrial digital printing machine |
| CN114932747B (en) * | 2022-05-12 | 2023-07-21 | 郑州新世纪数码科技股份有限公司 | Universal meter collecting and releasing printer |
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| CN109591459A (en) | 2019-04-09 |
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