CN112693216B

CN112693216B - Printing machine capable of fixing to-be-printed products with different thicknesses and using method thereof

Info

Publication number: CN112693216B
Application number: CN202011425292.5A
Authority: CN
Inventors: 雷亮
Original assignee: 南京三隆包装有限公司
Current assignee: Nanjing Sanlong Packaging Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2022-04-12
Anticipated expiration: 2040-12-09
Also published as: CN112693216A

Abstract

The invention discloses a printing machine capable of fixing to-be-printed products with different thicknesses, and relates to the technical field of gravure monochromatic printing equipment. The invention has reasonable structure, controls the printing pressure of the printing plate on the printed matter through the weight adjustment of the counterweight mechanism, and can adjust the distance between the printing plate and the printed matter, thereby meeting the requirement of printing the printed matter with different thicknesses.

Description

Printing machine capable of fixing to-be-printed products with different thicknesses and using method thereof

Technical Field

The invention relates to the technical field of gravure single-color printing equipment, in particular to a printing machine capable of fixing to-be-printed products with different thicknesses and a using method thereof.

Background

The printing is a process of transferring characters, pictures and the like to a printing stock through a printing machine and special ink, the intaglio printing is that the image and text part on a printing plate is concave and the blank part is convex, when the machine prints a single color, the printing plate is firstly soaked in an ink tank, the whole surface of the printing plate is coated with an ink layer, the ink layer belonging to the blank part on the surface of the printing plate is scraped, the convex part forms a blank, the concave part is filled with the ink, the deeper the concave part is, the thicker the ink layer is, and the machine transfers the ink of the concave part to a printed matter through the pressure action, thereby obtaining the printed matter.

In the prior art, intaglio printing generally dips in through the seal cylinder and gets the printing ink printing, and seal cylinder rigidity can not adjust, can not deal with the stock of different thickness simultaneously, if the printing stock thickness too thick can cause the jam unable printing, perhaps because of the too big condition such as fuzzy printing that causes of extrusion force, if the printing stock thickness is too thin, can cause the extrusion force too little and the printing ink can't transfer to the printing stock, the condition that shows is unclear, consequently, need for one kind and can satisfy the printing machine that different thickness waited the printed matter to fix urgently.

Disclosure of Invention

The invention aims to provide a printer capable of fixing to-be-printed products with different thicknesses so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a printer capable of fixing to-be-printed products with different thicknesses comprises a rack, wherein a gantry support is fixedly mounted at the top of the rack, a sliding mechanism is slidably mounted at the top of the gantry support, a cross-shaped support frame is fixedly mounted at the bottom of the sliding mechanism, sliding sleeves are fixedly mounted in four end areas of the cross-shaped support frame, first sliding columns are slidably mounted on the four sliding sleeves, a base plate is fixedly mounted at the bottom of each first sliding column, a counterweight mechanism is arranged at the top of the base plate, a printing plate, an ink scraping mechanism and two pressing mechanisms are fixedly mounted at the bottom of the base plate, the two pressing mechanisms are respectively located on two sides of the printing plate, a positioning plate mechanism is fixedly mounted on one side of the bottom of the base plate, a conveying mechanism and two guide plates are fixedly mounted on one side of the top of the rack, the two guide plates are respectively located on two sides of the conveying mechanism and are higher than the conveying mechanism, the top of frame is equipped with ink horn and drying device, the ink horn with drying device all is located conveying mechanism's one side, the ink horn is located gantry support's bottom, and with the printing plate lateral position is corresponding, drying device is located conveying mechanism's top, and with the printing plate longitudinal position is corresponding, frame one side is equipped with the slip table, the slip table with the conveying mechanism position is corresponding, and the slip table highest point is less than conveying mechanism.

Based on above mechanism, through two deflector and locating plate mechanisms with the printed matter location, because the base plate can follow first traveller and freely slide, when the printing plate contacted the printed matter, the base plate still can continue to move, consequently no matter what the thickness of printed matter was, the impression depth to the printed matter is mainly determined by the weight of base plate and counter weight mechanism, can guarantee the uniformity of impression depth and degree of depth through counter weight mechanism adjustment counter weight, the realization can satisfy the printed matter of printing different thickness when guaranteeing printing quality.

Preferably, the conveying mechanism comprises two rotating wheels, the two rotating wheels are respectively located at two ends of the rack and are respectively rotatably installed on the rack through rotating shafts, the two rotating wheels are sleeved with one conveying belt, one end of one rotating shaft extends to the outer side wall of the rack, a driving wheel is fixedly installed at the end of the rotating shaft, and the belt wheel is connected with the transmission mechanism.

Furthermore, the transmission mechanism is connected with and drives one of the belt wheels to rotate, the belt wheels rotate to drive the conveying belt to rotate, and meanwhile, the conveying belt is linked with the other belt wheel to form a conveying function.

Preferably, the transmission mechanism comprises a motor, the motor is fixedly mounted at the bottom of the rack, a transmission wheel is fixedly mounted on an output shaft of the motor, and the transmission wheel and the belt wheel are tensioned to form a same transmission belt.

Furthermore, the motor drives the transmission wheel to rotate, and the belt wheel is driven to rotate through the transmission belt, so that the belt wheel is driven.

Preferably, the pressing mechanism comprises two springs, two second sliding columns and a pressing plate, a plurality of circular sliding holes are formed in the base plate, the two second sliding columns are installed in the circular sliding holes in a sliding mode, the bottoms of the two second sliding columns are fixedly installed at the two ends of the top of the pressing plate respectively, the two springs are sleeved on the two second sliding columns respectively, and the two ends of the two springs are in contact with the bottom of the base plate and the top of the pressing plate respectively.

Furthermore, the two pressing plates contact with the printed matter before the printing plate, the printed matter is pressed tightly, and after the printing is finished, due to the elastic force of the spring, the two pressing plates are separated from the printed matter behind the printing plate, so that the printed matter is prevented from being adhered to the printing plate.

Preferably, the sliding mechanism comprises a sliding block, the sliding block is slidably mounted on the gantry support, a square sliding hole is formed in the top of the sliding block, a main upright column is slidably mounted in the square sliding hole, and the bottom of the main upright column is fixedly connected with the top of the cross-shaped support frame.

Further, the sliding mechanism can realize free movement in the transverse direction and the longitudinal direction, so that the printing plate can move back and forth between the ink box and the conveying mechanism to realize printing action.

Preferably, the counter weight mechanism includes four loop bars, four the equal fixed mounting of loop bar is in the top of base plate, four all cup joint on the loop bar and install the balancing weight, four loop bar top one side all is equipped with the screw thread and the spiro union has lock nut.

Furthermore, the balancing weight can be replaced according to the requirement, and the balancing weight is fixed through the locking nut, so that the balancing weight can be kept stable in the moving process of the substrate.

Preferably, the ink scraping mechanism comprises two C-shaped supports, a doctor blade and two arc-shaped guide rails, the tops of the two arc-shaped guide rails are fixedly mounted at the bottom of the substrate, sliding grooves are formed in the two opposite sides of the two arc-shaped guide rails, one end of each of the two C-shaped supports is slidably mounted in the two sliding grooves, the other end of each of the two C-shaped supports is fixedly mounted on the doctor blade, and the top of the doctor blade is in contact with the bottom of the printing plate.

Further, the ink scraping blade slides along the arc-shaped guide rail to scrape off the redundant ink on the bottom surface of the printing plate, and only the ink in the groove on the printing plate, which is lower than the surface, is reserved.

Preferably, the locating plate mechanism includes L shape slide bar and limiting plate, L shape slide bar fixed mounting be in on the lateral wall of base plate, limiting plate top fixed mounting has the enhancement horizontal pole, the both ends of strengthening the horizontal pole have all been seted up the slide opening, two equal slidable mounting has the guide bar, two in the slide opening equal fixed mounting in the guide bar bottom in the frame, the one side fixed mounting who strengthens the horizontal pole middle part has the short column, rotate on the short column and install the gyro wheel, the gyro wheel outside with L shape slide bar top side contacts, the one end of L shape slide bar is slope form.

Further, when the L-shaped sliding rod moves to one side of the ink box along with the substrate, the L-shaped sliding rod is separated from the roller, the limiting plate is in contact with the conveying belt and limits printed matters, and when the L-shaped sliding rod moves to one side of the conveying mechanism along with the substrate, the roller rolls along the slope end of the L-shaped sliding rod and climbs, so that the limiting plate is separated from the conveying belt and is in contact with the conveying belt for limiting.

Preferably, drying device includes the heating cabinet, the heating cabinet fixed mounting be in the frame top, heating cabinet one side fixedly connected with conveyer pipe, conveyer pipe one end fixed mounting has the stoving cover, the stoving cover is the horn mouth form.

Further, after the printed matter is separated from the printing plate, the printing ink is dried by the drying device.

Preferably, two semicircular grooves are formed in two ends of each of the two arc-shaped guide rails and are respectively matched with one ends of the two C-shaped supports.

Further, after ink scraping is finished, one ends of the two C-shaped supports respectively stay in the two semicircular grooves, and printing of the printing plate is not affected.

Preferably, a liquid discharge pipe is fixedly communicated with the bottom of the ink box, and a valve is fixedly mounted at one end, close to the bottom, of the liquid discharge pipe.

Further, the ink in the ink cartridge can be cleaned by the drain pipe.

Preferably, two buffer blocks are fixedly mounted at the top of the gantry support, and the two buffer blocks are respectively located at two sides of the sliding mechanism.

Furthermore, through the arrangement of the two buffer blocks, the collision of the sliding mechanism is reduced, and the safety of the equipment is improved.

Preferably, one side of the frame is provided with an emergency stop button.

Further, when an emergency occurs, the equipment is stopped by pressing the emergency stop button, and safety is improved.

In summary, compared with the prior art, the invention has the following technical effects and advantages:

1. in the invention, the printing pressure of the printing plate on the printed matter is controlled by adjusting the weight through the counterweight mechanism, the distance between the printing plate and the printed matter is adjustable, and the printing pressure is stable, thereby being capable of printing the printed matter with different thicknesses;

2. according to the invention, the printed matter can be positioned through the guide block and the pressing mechanism, and then the printed matter is printed after being completely positioned;

3. according to the invention, positioning is realized by arranging the guide plate and the positioning plate mechanism, transverse and longitudinal movement is realized by the sliding mechanism, so that the printing plate reciprocates between the ink box and two sides of the conveying mechanism, and redundant attached ink on the bottom surface of the printing plate is scraped by arranging the ink scraping mechanism.

Drawings

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic perspective view of another perspective structure according to the present invention.

Fig. 3 is a transverse cross-sectional view of the present invention.

Fig. 4 is a longitudinal sectional view of the present invention.

FIG. 5 is an enlarged view of a portion of the area A in FIG. 1 according to the present invention.

FIG. 6 is an enlarged view of a portion of the area B in FIG. 2 according to the present invention.

In the figure: 1. a frame; 2. a guide plate; 3. a conveying mechanism; 4. a gantry support; 5. a substrate; 6. a drying device; 7. a sliding table; 8. a sliding mechanism; 9. a positioning plate mechanism; 10. a counterweight mechanism; 11. a cross support frame; 12. a first traveler; 13. a wiping mechanism; 14. an ink cartridge; 15. a transmission mechanism; 16. a hold-down mechanism; 17. a printing plate; 81. a main upright post; 82. a slider; 91. an L-shaped sliding rod; 92. a limiting plate; 93. a reinforcing cross bar; 94. a guide bar; 95. a short column; 96. a roller; 101. a loop bar; 102. locking the nut; 103. a balancing weight; 131. a C-shaped bracket; 132. a doctor blade; 133. an arc-shaped guide rail; 134. a semicircular groove; 141. a liquid discharge pipe; 151. a motor; 152. a drive belt; 153. a pulley; 161. a spring; 162. a second strut; 163. pressing a plate; 201. a buffer block; 202. emergency stop button

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b): referring to fig. 1 to 6, the present embodiment discloses a printer capable of fixing to-be-printed products with different thicknesses, which comprises a frame 1. The frame 1 may be any frame structure known in the art, such as a metal frame.

The top of the frame 1 is fixedly provided with a gantry support 4, and the gantry support 4 is connected in any fixing mode in the prior art, such as welding.

In a preferred embodiment, the gantry 4 is formed by fixedly connecting two upright posts and a cross bar, and can also be an integrated gantry.

The top of the gantry support 4 is provided with a sliding mechanism 8 in a sliding way.

The bottom of the sliding mechanism 8 is fixedly provided with a cross support 11, and the cross support 11 can be any hard support in the prior art, such as a cross metal block.

As a preferred embodiment, sliding sleeves are fixedly installed in four end regions of the cross support frame 11, first sliding columns 12 are installed on the four sliding sleeves in a sliding manner, and sliding manners such as gear racks and the like can be set in a matching manner of the sliding sleeves and the first sliding columns 12.

The base plate 5 is fixedly mounted on the bottom of the first sliding column 12, and the base plate 5 may be any one of flat plates in the prior art, such as a metal plate.

The top of the base plate 5 is provided with a counterweight mechanism 10.

The bottom of the substrate 5 is fixedly provided with a printing plate 17, a wiping mechanism 13 and two pressing mechanisms 16, and as a preferred embodiment, the two pressing mechanisms 16 are respectively positioned at two sides of the printing plate 17, and a plurality of mechanisms with pressing functions can be respectively arranged at the periphery of the printing plate 17.

A positioning plate mechanism 9 is fixedly arranged on one side of the bottom of the base plate 5.

One side of the top of the frame 1 is fixedly provided with a conveying mechanism 3 and two guide plates 2, the two guide plates 2 are respectively positioned at two sides of the conveying mechanism 3 and are higher than the conveying mechanism 3, and the guide plates 2 can be any smooth thin plate in the prior art, such as a plastic plate.

As a preferred embodiment, the top of the frame 1 is provided with an ink box 14 and a drying device 6, the ink box 14 and the drying device 6 are both positioned at one side of the conveying mechanism 3, the ink box 14 is positioned at the bottom of the gantry support 4 and corresponds to the transverse position of the printing plate 17, the drying device 6 is positioned at the top of the conveying mechanism 3 and corresponds to the longitudinal position of the printing plate 17, and the drying device 6 can also be fixedly arranged on the gantry support 4 and positioned at the top of the conveying mechanism 3.

A sliding table 7 is arranged on one side of the rack 1, the sliding table 7 corresponds to the conveying mechanism 3 in position, the sliding table 7 is in a slope shape, and the highest position of the sliding table 7 is lower than the conveying mechanism 3.

Based on the above mechanisms, the positioning is realized through the two guide plates 2 and the positioning plate mechanism 9, the transverse and longitudinal movement is realized through the sliding mechanism 8, the printing plate 17 makes reciprocating motion between the two sides of the ink box 14 and the conveying mechanism 3, the ink scraping mechanism 13 scrapes redundant attached ink on the bottom surface of the printing plate 17, the weight can be adjusted through the counterweight mechanism 10, when the printing plate 17 moves to the bottommost end and is in contact with the conveying mechanism 3, the base plate 5 can freely slide along the first sliding column 12 and continuously move to the bottom side, the printed matter can be pressed through the pressing mechanism 16, when the printing plate 17 is separated from the printed matter, the pressing mechanism 16 still keeps pressing the printed matter, the printed matter is conveyed to the lower part of the drying mechanism along with the conveying mechanism 3 and dried, and is slid down through the sliding table 7 and stored.

In this embodiment, conveying mechanism 3 includes two runners, and two runners are located the both ends of frame 1 respectively to rotate through the pivot respectively and install in frame 1, cup joint on two runners and install same conveyer belt, the conveyer belt rotates along with two runners, the one end of one of them pivot extends to frame 1 lateral wall, and this end fixed mounting has the drive wheel, and band pulley 153 is connected with drive mechanism 15, through one of them pivot of drive mechanism 15 drive.

In this embodiment, the transmission mechanism 15 includes a motor 151, the motor 151 is fixedly installed at the bottom of the frame 1, a transmission wheel is fixedly installed on an output shaft of the motor 151, and the same transmission belt 152 is tensioned on the transmission wheel and the belt wheel 153.

In this embodiment, the pressing mechanism 16 includes two springs 161, two second sliding columns 162 and a pressing plate 163, a plurality of circular sliding holes are opened on the substrate 5, the two second sliding columns 162 are respectively slidably installed in the circular sliding holes, the bottoms of the two second sliding columns 162 are respectively fixedly installed at two ends of the top of the pressing plate 163, the two springs 161 are respectively sleeved on the two second sliding columns 162, two ends of the two springs 161 are respectively contacted with the bottom of the substrate 5 and the top of the pressing plate 163, and the two second sliding columns 162 drive the pressing plate 163 to move along the circular sliding holes.

In this embodiment, the sliding mechanism 8 includes a sliding block 82, the sliding block 82 is slidably mounted on the gantry support 4, a square sliding hole is formed in the top of the sliding block 82, a main upright 81 is slidably mounted in the square sliding hole, and the bottom of the main upright 81 is fixedly connected to the top of the cross support 11.

In this embodiment, the counterweight mechanism 10 include four loop bars 101, and the equal fixed mounting of four loop bars 101 is at the top of base plate 5, all cup joints on four loop bars 101 and installs the balancing weight 103, and the top one side of four loop bars 101 all is equipped with the screw thread and the spiro union has lock nut 102.

In this embodiment, the ink scraping mechanism 13 includes two C-shaped supports 131, a doctor blade 132 and two arc-shaped guide rails 133, the tops of the two arc-shaped guide rails 133 are all fixedly mounted at the bottom of the substrate 5, the sliding grooves are respectively formed in the opposite sides of the two arc-shaped guide rails 133, one ends of the two C-shaped supports 131 are respectively slidably mounted in the two sliding grooves, the other ends of the two C-shaped supports 131 are all fixedly mounted on the doctor blade 132, and the top of the doctor blade 132 is in contact with the bottom of the printing plate 17.

In this embodiment, positioning plate mechanism 9 includes L-shaped slide bar 91 and limiting plate 92, L-shaped slide bar 91 is fixed mounting on a lateral wall of base plate 5, top fixed mounting of limiting plate 92 has reinforcing horizontal pole 93, the slide opening has all been seted up at reinforcing horizontal pole 93's both ends, equal slidable mounting has guide bar 94 in two slide openings, the equal fixed mounting in bottom of two guide bar 94 is on frame 1, reinforcing horizontal pole 93's middle part one side fixed mounting has short column 95, it installs gyro wheel 96 to rotate on the short column 95, the gyro wheel 96 outside contacts with the top side of L-shaped slide bar 91, L-shaped slide bar 91 one end is the slope form, through the setting of foretell structure, when L-shaped slide bar 91 removed along base plate 5 looks both sides, make gyro wheel 96 along L-shaped slide bar 91 surface roll or phase separation.

In this embodiment, drying device 6 includes the heating cabinet, and heating cabinet fixed mounting is at the top of frame 1, and heating cabinet one side fixedly connected with conveyer pipe, the one end fixed mounting of conveyer pipe have the stoving cover, and the stoving cover is the horn mouth form.

In this embodiment, two ends of the two arc-shaped guide rails 133 are respectively provided with a semicircular groove 134, the two semicircular grooves 134 are respectively matched with one ends of the two C-shaped brackets 131, and when the two C-shaped brackets 131 move to the tail ends of the two arc-shaped guide rails 133, one ends of the two C-shaped brackets 131 can slide into and stay in the semicircular grooves 134.

In this embodiment, the bottom of the ink cartridge 14 is fixedly communicated with a drain pipe 141, one end of the drain pipe 141 near the bottom is fixedly provided with a valve, and the drain pipe 141 may be any one of the pipes in the prior art, such as a plastic pipe.

In this embodiment, gantry support 4 top fixed mounting has two buffer blocks 201, and two buffer blocks 201 are located the both sides of slide mechanism 8 respectively, and two buffer blocks 201 can be any one kind of elastic element among the prior art, like the block rubber.

In this embodiment, an emergency stop button 202 is disposed on one side of the frame 1.

The working principle of the invention is as follows: when the device is used, a printed matter is conveyed to the bottom of a printing plate 17 through a conveying mechanism 3, the printed matter is positioned through two guide plates 2 and a positioning plate mechanism 9, the printed matter corresponds to the printing plate 17, the transverse and longitudinal movement is realized through a sliding mechanism 8, after ink is dipped in an ink box 14, redundant ink on the printing plate 17 is scraped through an ink scraping mechanism 13, the printing plate 17 is then contacted with the printed matter, because a substrate 5 can freely slide along a first sliding column 12, the impression depth of the printed matter is mainly determined by the weight of the substrate 5 and a counterweight mechanism 10 no matter the thickness of the printed matter, the consistency of the impression depth and the depth can be ensured through adjusting a counterweight through the counterweight mechanism 10, the printed matter can be pressed through a pressing mechanism 16, when the printing plate 17 is separated from the printed matter, the pressing mechanism 16 still keeps pressing the printed matter, the printed matter is conveyed to the lower part of a drying mechanism along with the conveying mechanism 3 to be dried, is slid down and stored through the slide table 7.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a can satisfy different thickness and treat fixed printing machine of printed matter, includes frame (1), its characterized in that: the automatic ink-jet printing machine is characterized in that a gantry support (4) is fixedly mounted at the top of the rack (1), a sliding mechanism (8) is slidably mounted at the top of the gantry support (4), a cross support frame (11) is fixedly mounted at the bottom of the sliding mechanism (8), sliding sleeves are fixedly mounted in four end areas of the cross support frame (11), first sliding columns (12) are slidably mounted on the four sliding sleeves, a base plate (5) is fixedly mounted at the bottom of each first sliding column (12), a counterweight mechanism (10) is arranged at the top of the base plate (5), a printing plate (17), an ink scraping mechanism (13) and two pressing mechanisms (16) are fixedly mounted at the bottom of the base plate (5), the two pressing mechanisms (16) are respectively located on two sides of the printing plate (17), and a positioning plate mechanism (9) is fixedly mounted on one side of the bottom of the base plate (5), a conveying mechanism (3) and two guide plates (2) are fixedly arranged on one side of the top of the frame (1), the two guide plates (2) are respectively positioned on two sides of the conveying mechanism (3) and are higher than the conveying mechanism (3), the top of the frame (1) is provided with an ink box (14) and a drying device (6), the ink box (14) and the drying device (6) are both positioned at one side of the conveying mechanism (3), the ink box (14) is positioned at the bottom of the gantry support (4), and corresponding to the lateral position of the printing plate (17), the drying device (6) is positioned at the top of the conveying mechanism (3), the device is characterized in that the device corresponds to the longitudinal position of the printing plate (17), a sliding table (7) is arranged on one side of the rack (1), and the sliding table (7) corresponds to the conveying mechanism (3); the pressing mechanism (16) comprises two springs (161), two second sliding columns (162) and a pressing plate (163), a plurality of circular sliding holes are formed in the substrate (5), the two second sliding columns (162) are installed in the circular sliding holes in a sliding mode, the bottoms of the two second sliding columns (162) are fixedly installed at the two ends of the top of the pressing plate (163) respectively, the two springs (161) are sleeved on the two second sliding columns (162) respectively, and the two ends of the two springs (161) are in contact with the bottom of the substrate (5) and the top of the pressing plate (163) respectively; the sliding mechanism (8) comprises a sliding block (82), the sliding block (82) is slidably mounted on the gantry support (4), a square sliding hole is formed in the top of the sliding block (82), a main upright column (81) is slidably mounted in the square sliding hole, and the bottom of the main upright column (81) is fixedly connected with the top of the cross support frame (11); the counterweight mechanism (10) comprises four loop bars (101), the four loop bars (101) are fixedly mounted at the top of the base plate (5), counterweight blocks (103) are sleeved on the four loop bars (101), and one sides of the top ends of the four loop bars (101) are provided with threads and are screwed with locking nuts (102); the positioning plate mechanism (9) comprises an L-shaped sliding rod (91) and a limiting plate (92), the L-shaped sliding rod (91) is fixedly installed on one side wall of the base plate (5), a reinforcing cross rod (93) is fixedly installed at the top of the limiting plate (92), sliding holes are formed in the two ends of the reinforcing cross rod (93), guide rods (94) are installed in the sliding holes in a sliding mode, the bottoms of the two guide rods (94) are fixedly installed on the rack (1), a short column (95) is fixedly installed on one side of the middle of the reinforcing cross rod (93), a roller (96) is installed on the short column (95) in a rotating mode, the outer side of the roller (96) is in contact with the top side of the L-shaped sliding rod (91), and one end of the L-shaped sliding rod (91) is in a slope shape;

the ink scraping mechanism (13) comprises two C-shaped supports (131), a scraping blade (132) and two arc-shaped guide rails (133), the tops of the two arc-shaped guide rails (133) are fixedly mounted at the bottom of the base plate (5), sliding grooves are formed in the opposite sides of the two arc-shaped guide rails (133), one ends of the two C-shaped supports (131) are respectively slidably mounted in the two sliding grooves, the other ends of the two C-shaped supports are fixedly mounted on the scraping blade (132), and the top of the scraping blade (132) is in contact with the bottom of the printing plate (17);

the drying device (6) comprises a heating box, the heating box is fixedly mounted at the top of the rack (1), one side of the heating box is fixedly connected with a conveying pipe, one end of the conveying pipe is fixedly provided with a drying cover, and the drying cover is in a horn mouth shape;

two ends of the two arc-shaped guide rails (133) are respectively provided with a semicircular groove (134), and the two semicircular grooves (134) are respectively matched with one ends of the two C-shaped brackets (131);

a liquid discharge pipe (141) is fixedly communicated with the bottom of the ink box (14), and a valve is fixedly arranged at one end, close to the bottom, of the liquid discharge pipe (141);

two buffer blocks (201) are fixedly mounted at the top of the gantry support (4), the two buffer blocks (201) are respectively located on two sides of the sliding mechanism (8), and an emergency stop button (202) is arranged on one side of the rack (1).

2. The printer capable of fixing the to-be-printed products with different thicknesses as claimed in claim 1, is characterized in that: conveying mechanism (3) include two runners, two the runner is located respectively the both ends of frame (1) to rotate through the pivot respectively and install on frame (1), two cup joint on the runner and install same conveyer belt, one of them pivot one end extends to the lateral wall of frame (1), and this end fixed mounting has band pulley (153), band pulley (153) are connected with drive mechanism (15).

3. The printer capable of fixing the to-be-printed products with different thicknesses as claimed in claim 2, is characterized in that: the transmission mechanism (15) comprises a motor (151), the motor (151) is fixedly installed at the bottom of the rack (1), a transmission wheel is fixedly installed on an output shaft of the motor (151), and the transmission wheel and the belt wheel (153) are tensioned with the same transmission belt (152).