CN215512913U - Conveying device and printing equipment - Google Patents

Abstract

The utility model provides a conveying device and printing equipment, belongs to the technical field of printing, and solves the problem that the printing equipment in the prior art cannot remove dust on printing media with different widths. In one aspect, a delivery device comprises: the adsorption platform is used for adsorbing and fixing the printing medium; the dust removal mechanism is arranged above the adsorption platform; the first driving mechanism is used for driving the dust removing mechanism to move relative to the printing medium along a first direction; and the second driving mechanism is used for driving the dust removing mechanism to move relative to the printing medium along a second direction perpendicular to the first direction. In another aspect, a printing apparatus includes the aforementioned conveyance device. The conveying device and the printing equipment provided by the utility model can be used for removing dust from printing media with different widths, so that the printing quality of the printing media is ensured, and the application of the printing equipment is wider.

Description

Conveying device and printing equipment

Technical Field

The utility model belongs to the technical field of printing, and particularly relates to a conveying device and printing equipment.

Background

The UV printer is a high-tech plate-free full-color digital printer, is not limited by materials, and can be used for carrying out color photo-level printing on the surfaces of T-shirts, sliding doors, cabinet doors, sliding doors, glass, plates, various labels, crystals, PVC, acrylic, metal, plastics, stones, leather and the like. The UV printing process mainly refers to the fact that a special UV printing ink is used for achieving a local or integral UV printing effect on a UV printing machine, the UV printing ink is mainly suitable for printing of materials which are not in material absorption, is green and environment-friendly, has the characteristics of being instantly and quickly cured, free of volatile organic solvent (VOC), low in pollution, high in efficiency, low in energy consumption and the like, and is a printing mode of printing by adopting the UV printing ink and drying by utilizing ultraviolet rays. Before the printing, if contain dust or other impurity on the print media, after UV printer printing, printing ink can cover the impurity on the print media to solidification in the twinkling of an eye is difficult to the clearance, and this can influence the printing effect of printer, so that print product quality is unqualified, and, impurity on the print media also probably falls to cause printer malfunction in the printer, reduces the life of printer.

The prior art discloses a 3D printer, through adopting the mobile device that can carry out reciprocating motion, carries on dust collector, makes dust collector can carry out the reciprocal dust removal operation of continuation to the 3D printer, can reach the purpose of clearing up the dust comprehensively. This dust removal method has the following disadvantages: the volume of the 3D printer is fixed, the printing medium is arranged in the printer, the width of the printing medium capable of removing dust is limited, the printer is usually only suitable for the printing medium of a certain type, and if the printing medium is wide, the printer with a large width can only be adopted, so that the 3D printer is very inconvenient; meanwhile, the width of the printing medium in different printing scenes is different, or the width of the printing medium in the same printing scene is different, so that the printer cannot normally operate.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a conveying device and a printing apparatus, so as to solve the problem that the printing apparatus in the prior art cannot remove dust from printing media with different widths.

The technical scheme adopted by the utility model is as follows:

in a first aspect, the present invention provides a delivery device comprising: the adsorption platform is used for adsorbing and fixing the printing medium; the dust removal mechanism is arranged above the adsorption platform; the first driving mechanism is used for driving the dust removing mechanism to move relative to the printing medium along a first direction; and the second driving mechanism is used for driving the dust removing mechanism to move relative to the printing medium along a second direction perpendicular to the first direction.

As a preferable aspect of the above-described conveying device, the dust removing mechanism includes: the fixing assembly is connected with the first driving mechanism in a sliding mode, and the adsorption assembly is connected with the fixing assembly.

As a preferable mode of the above conveying device, the first driving mechanism includes a first power source and a first guiding mechanism, the first power source drives the dust removing mechanism to move along a guiding direction of the first guiding mechanism, and the guiding direction of the first guiding mechanism is a first direction.

As a preferable scheme of the conveying device, the second driving mechanism includes a first sub-driving mechanism, the first sub-driving mechanism includes a second power source, a second guiding mechanism, a first transmission member, a third guiding mechanism, and a second transmission member, one end of the first transmission member is slidably connected to the second guiding mechanism, the opposite end of the first transmission member is fixedly connected to the second transmission member, one end of the second transmission member is slidably connected to the third guiding mechanism, the opposite end of the second transmission member is fixedly connected to the first driving mechanism, and the first transmission member drives the first driving mechanism to move along the second direction under the driving of the second power source.

As a preferable mode of the above conveying device, at least two second transmission members are provided on both sides of the adsorption platform opposite to each other in the first direction.

As a preferable aspect of the above conveyance device, the second drive mechanism includes a second sub drive mechanism for controlling the printing medium to move in the second direction, and the second sub drive mechanism includes: the unwinding device comprises a third power source and an unwinding assembly, and the third power source drives the unwinding assembly to rotate so as to unwind the printing medium; the winding device comprises a fourth power source and a winding component, and the fourth power source drives the winding component to rotate so as to wind the printed printing medium; and the tensioning mechanism is used for tensioning the printing medium which is unreeled by the unreeling device and reeled by the reeling device.

As the preferable scheme of the conveying device, the conveying device further comprises an air suction device, an adsorption through hole is formed in the adsorption platform, and the air suction device is arranged below the adsorption through hole and provides negative pressure for the adsorption through hole to adsorb and fix the printing medium.

As a preferable scheme of the conveying device, a rolling device is arranged at the bottom of the conveying device and used for moving the conveying device.

As a preferable scheme of the conveying device, a supporting seat is arranged at the bottom of the conveying device.

In a second aspect, the utility model provides a printing apparatus comprising the aforementioned transport device.

In conclusion, the beneficial effects of the utility model are as follows:

the conveying device is provided with a dust remover and a second driving mechanism, the dust removing mechanism can remove dust from the printing medium, and the second driving mechanism is used for driving the dust removing mechanism and the printing medium to move relatively in a first direction and a second direction respectively so that the dust removing mechanism removes dust from the printing medium in the first direction and the second direction respectively; therefore, the dust removal mechanism can cover the whole printing medium along the relative movement range of the second direction, removes dust for the printing media with different widths, ensures the printing quality of the printing media and enables the application of the printing equipment to be wider.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, without any creative effort, other drawings may be obtained according to the drawings, and these drawings are all within the protection scope of the present invention.

FIG. 1 is a schematic view of the external structure of the conveying apparatus of the present invention;

FIG. 2 is a schematic view of the internal structure of the conveying apparatus according to the present invention;

FIG. 3 is a schematic structural view of the dust removing mechanism of the present invention;

FIG. 4 is a schematic structural diagram of a first sub-driving mechanism according to the present invention;

FIG. 5 is a perspective view of a first sub-drive mechanism of the present invention;

FIG. 6 is a schematic structural view of a second transmission member according to the present invention;

FIG. 7 is a schematic structural diagram of an adsorption platform of the present invention.

Parts and numbering in the drawings:

1. a dust removal mechanism; 10. a fixing assembly; 11. an adsorption component; 2. a first drive mechanism; 20. a first guide mechanism; 3. a first sub-drive mechanism; 30. a second guide mechanism; 31. a first transmission member; 32. a third guide mechanism; 33. a second transmission member; 4. a second sub-drive mechanism; 40. a traction roller; 41. a tension roller; 5. an adsorption platform; 50. an adsorption through hole; 6. a rolling device; 7. and (4) supporting the base.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. In case of conflict, the embodiments of the present invention and the various features of the embodiments may be combined with each other within the scope of the present invention.

On one hand, referring to fig. 1, an embodiment of the present invention discloses a conveying device, including:

an adsorption platform 5 for adsorbing and fixing a printing medium; the dust removal mechanism 1 is arranged above the adsorption platform 5; the first driving mechanism 2 is used for driving the dust removing mechanism 1 to move relative to a printing medium along a first direction; and the second driving mechanism is used for driving the dust removing mechanism 1 to move relative to the printing medium along a second direction perpendicular to the first direction. So, dust removal mechanism 1 can remove dust to print media in the first direction, and simultaneously, dust removal mechanism 1 can cover whole print media along the relative motion range of second direction, removes dust to the print media of different width, has guaranteed print media's printing quality and has made printing apparatus's application more extensive.

In one embodiment, referring to fig. 3, the dust removing mechanism 1 includes: fixed subassembly 10 and adsorption component 11, fixed subassembly 10 and 2 sliding connection of first actuating mechanism, adsorption component 11 is connected with fixed subassembly 10, and fixed subassembly 10 can fix on the one hand and accomodate adsorption component 11, and on the other hand can drive adsorption component 11 along first direction reciprocating motion on first actuating mechanism 2 under the drive of first actuating mechanism 2 to the realization removes dust to print media. Further, adsorption component 11 is adhesive material adsorption component 11, optional sticky dirt cylinder, the cylinder setting of sticky dirt cylinder is in fixed subassembly 10 below, rotate with a connecting rod and be connected, the other end that the connecting rod is relative and fixed subassembly 10 fixed connection, the cylinder is PE section of thick bamboo core, the outer sticky dirt area of section of thick bamboo core is rolled up on PE section of thick bamboo core by the even book of non-setting adhesive coating mode of turning up, have the autohension, dust removal mechanism 1 during operation, the cylinder rolls on the printing medium surface, can adsorb granule and dust on the printing medium. It can be understood that the adsorption component 11 can be an electrostatic dust removal component, specifically, an electrostatic dust removal brush is adopted, the electrostatic dust removal brush is fixedly connected with the fixing component 10, when the dust removal mechanism 1 works, the electrostatic dust removal brush is electrified, and the electrostatic dust removal brush can adsorb dust on a printing medium when moving. The adsorption component 11 can be a negative pressure adsorption dust removal component, the component comprises a dust hood fixedly connected to the lower portion of the fixed component 10, a dust suction pipeline inside the dust hood and a fan connected with the dust suction pipeline are connected, the dust hood is arranged above the printing medium, when the dust removal mechanism 1 works, the fan can absorb air flow below the dust hood, dust on the printing medium is sucked into the dust hood, negative pressure can be formed at an air flow suction inlet, and air wall formation is promoted and dust absorption is accelerated.

In one embodiment, referring to fig. 1, the first driving mechanism 2 includes a first power source and a first guiding mechanism 20, the first power source drives the dust removing mechanism 1 to move along a guiding direction of the first guiding mechanism 20, and the guiding direction of the first guiding mechanism 20 is a first direction. Further, step motor is adopted to first power supply, and first guiding mechanism 20 adopts linear guide, and control is stable, and reciprocating motion is stable, and the relative both ends of linear guide are provided with stop gear, avoid dust removal mechanism 1 roll-off guide rail.

In an embodiment, referring to fig. 1 to 6, the second driving mechanism includes a first sub-driving mechanism 3, the first sub-driving mechanism 3 is configured to drive the first driving mechanism 2 to move in the second direction, and the first driving mechanism 2 drives the dust removing mechanism 1 to move in the second direction, at this time, the dust removing mechanism 1 is driven by the first driving mechanism 2 to move in both the first direction and the second direction, so that the printing media with different widths can be removed. Further, the first sub-driving mechanism 3 includes a second power source, a second guiding mechanism 30, a first transmission member 31, a third guiding mechanism 32 and a second transmission member 33, one end of the first transmission member 31 is slidably connected to the second guiding mechanism 30, the other opposite end is fixedly connected to the second transmission member 33, one end of the second transmission member 33 is slidably connected to the third guiding mechanism 32, the other opposite end is fixedly connected to the first driving mechanism 2, and the first transmission member 31 drives the first driving mechanism 2 to move along the second direction under the driving of the second power source. Furthermore, the second power source is a stepping motor, the second guiding mechanism 30 is a lead screw, the first transmission member 31 is a lead screw nut, the second transmission member 33 comprises a sliding block and a connecting plate, the third guiding mechanism 32 is a guide rail, the stepping motor drives the lead screw to rotate, the lead screw drives the lead screw nut to move along the second direction, the lead screw nut drives the sliding block to move on the guide rail, the sliding block is in threaded connection with the connecting plate, the connecting plate is in threaded connection with the first driving mechanism 2, the sliding block can drive the first driving mechanism 2 and the dust removing mechanism 1 to reciprocate along the second direction, so that the dust removing mechanism 1 can remove dust from the printing medium in the second direction, and the second direction is substantially the width direction of the printing medium to meet the dust removing requirements of the printing media with different widths. In this embodiment, the screw nut transmission mode is simple but weak in bearing capacity, and the guide rail is strong but complex in transmission mode, so that the guide rail is adopted to bear the first driving mechanism 2, and the screw nut is used as the transmission mechanism by making full use of the advantages of the screw nut transmission mode and the guide rail. Furthermore, the number of the second transmission members 33 is at least two, and the second transmission members are disposed on two opposite sides of the adsorption platform 5 along the first direction, and the dust removing mechanism 1 is disposed above the adsorption platform 5, and the two or more transmission members can better support the first driving mechanism 2, it can be understood that the second transmission members 33 should not be limited to the number, and the first driving mechanism 2 can be fixed while sliding on the third guiding mechanism 32, for example, the second transmission members 33 are integrally disposed, and the connection portion between the second transmission members and the first driving mechanism 2 is a beam or a connection rod, and the beam or the connection rod is fixedly connected with the first driving mechanism 2.

In one embodiment, referring to fig. 1, the second driving mechanism includes a second sub-driving mechanism 4, the second sub-driving mechanism 4 is used for controlling the printing medium to move along the second direction, it can be understood that the printing medium is stepped along the printing platform (not shown) through the dust removing mechanism, and the second sub-driving mechanism 4 includes: the unwinding device (not shown) is arranged at a preorder station of the adsorption platform and comprises a third power source and an unwinding assembly, and the third power source drives the unwinding assembly to rotate so as to unwind the printing medium; the winding device (not shown) is arranged at a subsequent station of the printing platform and comprises a fourth power source and a winding assembly, and the fourth power source drives the winding assembly to rotate so as to wind the printed printing medium; and the tensioning mechanism is used for tensioning the printing medium which is unreeled by the unreeling device and reeled by the reeling device. Furthermore, the third power source is a stepping motor, the unwinding assembly is a first roller, the printing medium is wound on the first roller, and the stepping motor drives the first roller to rotate on the first roller to gradually unwind the printing medium; the fourth power source is a stepping motor, the winding component is a second roller, and the stepping motor drives the second roller to rotate to wind the printing medium from the unwinding device; the tensioning mechanism comprises two traction rollers 40 and two tensioning rollers 41, the traction rollers 40 are used for drawing a printing medium, the tensioning rollers 41 are used for tensioning the printing medium so as to remove dust from the printing medium, the two traction rollers 40 are rotatably arranged at two opposite ends of the upper surface of the conveying device in the second direction, the printing medium is positioned between the adsorption platform 5 and the dust removal mechanism 1 when being drawn by the two traction rollers 40, the two tensioning rollers 41 are respectively rotatably arranged at two opposite ends of the conveying device in the second direction, namely, the two traction rollers 40 are respectively positioned nearby, the printing medium passes through a tensioning gap of one pair of rollers after coming out of the unwinding device, then depends on the two traction surfaces, and is tensioned by the other pair of tensioning rollers 41, and then the printing medium which is subjected to dust removal and printing is wound by the winding device.

In an embodiment, referring to fig. 1, 2 and 7, the conveying device further includes an air suction device (not shown), the adsorption platform 5 is provided with an adsorption through hole 50, and the air suction device is disposed below the adsorption through hole 50 and provides negative pressure to the adsorption through hole 50 to adsorb and fix the printing medium; furthermore, the adsorption through holes 50 are multiple, the adsorption through holes are evenly distributed on the surface of the adsorption platform 5, so that the printing medium conveyed by the conveying device can be evenly adsorbed and fixed, a negative pressure cavity can be formed when the air suction device works, a negative pressure source is connected in the air suction device, the negative pressure cavity controls the connection and disconnection between the negative pressure cavity and the negative pressure source through an on-off device, in the process of conveying the printing medium by the conveying device, the air suction device sucks air to enable negative pressure wind energy to be transmitted to the working surface of the adsorption platform 5 through the adsorption through holes 50, the printing medium is adsorbed on the adsorption platform 5, and the printing medium is prevented from moving.

In one embodiment, the conveying device only comprises the dust removing mechanism 1, the first driving mechanism 2 and the second sub-driving mechanism 4 in the above embodiments, the dust removing mechanism 1 is used for removing dust from the printing medium, the first driving mechanism 2 is used for driving the dust removing mechanism 1 to move in a first direction, and the second sub-driving mechanism 4 is used for driving the printing medium to move in a second direction; the first driving mechanism 2 is fixedly arranged on the conveying device, the dust removing mechanism 1 reciprocates on the first driving mechanism 2 to remove dust on the printing medium in a first direction, and the second sub-driving mechanism 4 drives the printing medium to move in a stepping mode below the conveying device to remove dust on the printing medium in a second direction. In this embodiment, the printing medium from the preceding station can directly enter the conveying device for dust removal, and a second driving mechanism does not need to be additionally arranged to drive the dust removal mechanism 1 to move in the second direction, so that the structure is simple.

In one embodiment, referring to fig. 1, the bottom of the conveying device is provided with a rolling device 6, and the rolling device 6 is used for moving the conveying device, so that the conveying device can be freely conveyed. The conveying device is a component of the printing equipment, when the printing equipment needs to be cleaned, replaced and maintained, the conveying device can be separated, the rolling device 6 is arranged for convenient transportation, the conveying device is pushed, the conveying device can freely move on the ground, the rolling device 6 is adopted, the labor consumption can be reduced, and the conveying device is convenient and fast. Furthermore, the rolling device 6 is a universal wheel, and the universal wheel can better adjust the movement direction of the conveying device.

In one embodiment, referring to fig. 1, a supporting seat 7 is disposed at the bottom of the conveying device, the supporting seat 7 is mainly used for supporting and fixing the conveying device, and when the conveying device is in operation, the supporting seat 7 can limit the movement of the conveying device and can fix the conveying device according to the target position.

On the other hand, the embodiment of the utility model discloses printing equipment which comprises the conveying device.

The conveying device is usually matched with a printing device for use to form the printing device capable of removing dust from a printing medium, the printing device is generally a UV printer, but the specific printer can be selected according to actual conditions. In this embodiment, before printing, if contain dust or other impurity on the print media, after UV printer printing, printing ink can cover the impurity on the print media, and solidification in the twinkling of an eye, be difficult to clear up, this can influence printing apparatus's printing effect, so that print product quality is unqualified, and, impurity on the print media also probably falls to cause printing apparatus work trouble in the printing apparatus, reduce printing apparatus's life, consequently, set up the dust removal process before the printing process, before printing to the print media, remove dust through dust removal mechanism 1 to the print media surface earlier, then print the print media after will removing dust, just can avoid aforementioned problem. And, dust removal mechanism below is adsorption platform 5, adsorb through the negative pressure and fix the printing medium on adsorption platform, in the follow-up printing process, what print the printing medium is the printing dolly, printing dolly below is provided with print platform, the printing dolly carries out inkjet printing to the printing medium on print platform, nevertheless because of the preorder station has used the negative pressure principle to adsorb fixed printing medium, if the inkjet printing position of printing medium is too close with adsorption platform 5 distance, this negative pressure can influence the printing quality of printing medium, consequently, adsorption platform 5 should have certain distance with the inkjet printing position. The conveying device provided by the utility model can be used for dedusting printing media with different widths, and for different printing scenes, the widths of the printing media are different, or the widths of the printing media in the same printing scene are different.

The working principle of the utility model is as follows:

taking the best embodiment of the present invention as an example, please refer to fig. 1 to 7, the conveying device includes the dust removing mechanism 1, the first driving mechanism 2, the first sub-driving mechanism 3 and the second sub-driving mechanism 4 in the above embodiments, during the dust removing process, the printing apparatus is started, the first driving mechanism 2 drives the dust removing mechanism 1 to perform the dust removal in the first direction, after the dust removal of the partial surface of the printing medium is completed, the second sub-driving mechanism 4 drives the printing medium to step, the first sub-driving mechanism 3 drives the first driving mechanism 2 to move in the second direction opposite to the moving direction of the printing medium until the dust removing mechanism 1 moves to the position above the non-dust-removed surface of the printing medium, the second sub-driving mechanism 4 and the first sub-driving mechanism 3 stop moving, the air suction device is started to suck and fix the printing medium on the suction platform 5, the first driving mechanism 2 drives the dust removing mechanism 1 to perform the dust removal on the printing medium in the first direction continuously, until the surface of the printing medium is completely dedusted, if the surface of the printing medium has a place which is not completely dedusted, the printing medium can be retracted to the position for dedusting again. The dust removal process and the printing process of the printing medium are carried out synchronously, the printing medium after dust removal can continue to advance under the driving of the second sub-driving mechanism 4, the printing medium is printed by the printing trolley, and the printing medium can be wound by the winding mechanism until the printing is finished. The utility model can remove dust for printing media with different widths, ensures the printing quality of the printing media and enables the application of printing equipment to be wider.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A conveying device for conveying a printing medium, comprising:

the adsorption platform is used for adsorbing and fixing the printing medium;

the dust removal mechanism is arranged above the adsorption platform;

the first driving mechanism is used for driving the dust removing mechanism to move relative to the printing medium along a first direction;

and the second driving mechanism is used for driving the dust removing mechanism to move relative to the printing medium along a second direction perpendicular to the first direction.

2. The conveyor apparatus of claim 1, wherein the dust removal mechanism comprises: the fixing assembly is connected with the first driving mechanism in a sliding mode, and the adsorption assembly is connected with the fixing assembly.

3. The conveying apparatus as claimed in claim 1, wherein the first driving mechanism includes a first power source and a first guide mechanism, the first power source drives the dust removing mechanism to move along a guide direction of the first guide mechanism, and the guide direction of the first guide mechanism is a first direction.

4. The conveying apparatus according to claim 1, wherein the second driving mechanism includes a first sub-driving mechanism, the first sub-driving mechanism includes a second power source, a second guiding mechanism, a first transmission member, a third guiding mechanism, and a second transmission member, one end of the first transmission member is slidably connected to the second guiding mechanism, the other opposite end of the first transmission member is fixedly connected to the second transmission member, one end of the second transmission member is slidably connected to the third guiding mechanism, the other opposite end of the second transmission member is fixedly connected to the first driving mechanism, and the first transmission member drives the first driving mechanism to move in the second direction under the driving of the second power source.

5. The conveying apparatus according to claim 4, wherein the second transmission members are at least two and are disposed on two opposite sides of the suction table in the first direction.

6. The transport device of claim 1, wherein the second drive mechanism includes a second sub drive mechanism for controlling movement of the print medium in a second direction, the second sub drive mechanism comprising:

the unwinding device comprises a third power source and an unwinding assembly, and the third power source drives the unwinding assembly to rotate so as to unwind the printing medium;

the winding device comprises a fourth power source and a winding component, and the fourth power source drives the winding component to rotate so as to wind the printed printing medium;

and the tensioning mechanism is used for tensioning the printing medium which is unreeled by the unreeling device and reeled by the reeling device.

7. The conveying device according to claim 1, further comprising an air suction device, wherein the suction platform is provided with a suction through hole, and the air suction device is arranged below the suction through hole and provides negative pressure for the suction through hole to suck and fix the printing medium.

8. A conveyor according to any one of claims 1-7, wherein the bottom of the conveyor is provided with rolling means for moving the conveyor.

9. The conveyor according to any one of claims 1-7, wherein the conveyor is provided with a support base at the bottom.

10. A printing apparatus, characterized by comprising a transport device according to any one of claims 1 to 9.

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