CN218370653U

CN218370653U - Printing apparatus

Info

Publication number: CN218370653U
Application number: CN202222028528.2U
Authority: CN
Inventors: 杨忠勇; 徐星; 江洪
Original assignee: Shenzhen Runtianzhi Digital Equipment Co Ltd
Current assignee: Shenzhen Runtianzhi Digital Equipment Co Ltd
Priority date: 2022-08-02
Filing date: 2022-08-02
Publication date: 2023-01-24
Anticipated expiration: 2032-08-02

Abstract

The application relates to the technical field of printing structures, and provides printing equipment which comprises a transmission mechanism, a positioning beam and a plurality of positioning assemblies, wherein the transmission mechanism comprises a feed roller transmission device and a belt transmission device, the feed roller transmission device is provided with a plurality of feeding stations, and the belt transmission device is provided with a plurality of printing stations; the positioning beam is arranged above the feeding roller transmission device; the positioning components are arranged on the positioning beam at intervals and are respectively arranged on the corresponding feeding stations; the positioning assembly comprises a first positioning piece and a second positioning piece, and the first positioning piece and the second positioning piece are arranged on the positioning beam and are arranged at intervals; the printing equipment of this application embodiment can make a plurality of stations of feed roll transmission device convey the polylith medium simultaneously, and the polylith medium accomplishes to print on a plurality of printing stations of belt transmission device, has improved production efficiency effectively.

Description

Printing apparatus

Technical Field

The application relates to the technical field of printing structures, and particularly provides a printing device.

Background

The printing device is one of the output devices of the computer for printing the results of the computer processing on the relevant media, and is capable of printing on a variety of media including, but not limited to, PVC, acrylic, glass, corrugated paper, and the like.

Present common printing apparatus generally can only print a medium simultaneously, through the manual work under the effect of locating plate, places the printing medium location at the printing station, then utilizes printing apparatus's printing mechanism to print the medium. When batch printing is required, the printing apparatus cannot meet the demand for yield.

SUMMERY OF THE UTILITY MODEL

The purpose of this application embodiment is to provide a printing apparatus, can make a plurality of stations of feed roll transmission device convey the polylith medium simultaneously, and polylith medium accomplishes the printing on a plurality of printing stations of belt transmission device, has improved production efficiency effectively.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

the embodiment of the application provides printing equipment which comprises a transmission mechanism, a positioning beam and a plurality of positioning assemblies, wherein the transmission mechanism comprises a feeding roller transmission device and a belt transmission device which are sequentially arranged along the transmission direction of a medium, the feeding roller transmission device is provided with a plurality of feeding stations which are arranged along the transmission direction vertical to the medium, and the belt transmission device is provided with a plurality of printing stations corresponding to the feeding stations; the positioning beam is arranged above the feeding roller conveying device along the conveying direction vertical to the medium; the positioning components are arranged on the positioning beam at intervals and are respectively arranged on the corresponding feeding stations; the positioning assembly comprises a first positioning piece and a second positioning piece, and the first positioning piece and the second positioning piece are arranged on the positioning beam at intervals.

The beneficial effects of the embodiment of the application are as follows: the printing equipment that this application embodiment provided, utilize feed roll transmission device to carry out the pay-off operation, and accomplish the printing operation on belt transmission device's the printing station, set up a plurality of pay-off stations on feed roll transmission device, and set up a plurality of locating component on the locating beam, so that each locating component sets up respectively on corresponding pay-off station, utilize a plurality of pay-off stations can carry polylith medium simultaneously, and polylith medium sets up respectively and realizes the location adjustment between the first setting element of corresponding locating component and second setting element, then carry to belt transmission device through feed roll transmission device, accomplish the printing of polylith medium on a plurality of printing stations, the conveying efficiency and the printing efficiency of medium have been improved effectively, satisfy the requirement in batch production.

In one embodiment, the feeding roller conveying device is also provided with a plurality of positioning stations corresponding to the feeding stations, and the positioning stations and the feeding stations are respectively arranged on two opposite sides of the positioning beam;

the printing equipment comprises a printing mechanism, the printing mechanism is arranged above the belt transmission device and is used for printing the medium on a printing station, and an approaching sensing piece used for detecting the medium entering a positioning station is arranged on the printing mechanism;

the printing equipment further comprises a plurality of adjusting assemblies, the adjusting assemblies are arranged on the wall surface of one side, away from the feeding station, of the positioning beam at intervals, and each adjusting assembly is arranged on the corresponding positioning station; the adjusting assembly comprises a first adjusting piece, a second adjusting piece and an adjusting driving piece, the first adjusting piece and the second adjusting piece are arranged on one side, away from the printing station, of the positioning beam, the first adjusting piece is configured to be in the same plane with the first positioning piece, the second adjusting piece is configured to be in the same plane with the second positioning piece, and the adjusting driving piece is connected to the first adjusting piece and used for driving the first adjusting piece to slide on the positioning beam; the approach sensing part is electrically connected with the adjusting driving part.

In one embodiment, the printing apparatus further comprises a first lifting assembly, the first lifting assembly comprising a first lifting driving member and a first blocking member, the first lifting driving member being connected to the first blocking member, the first lifting driving member being configured to drive the first blocking member to move to an end of the feeding station in a transport direction of the medium, or the first lifting driving member being configured to drive the first blocking member to move above the feeding station.

In one embodiment, the positioning beam is provided with a first photoelectric sensing part for detecting that the medium leaves the feeding station, and the first photoelectric sensing part is electrically connected to the first lifting driving part.

In one embodiment, the printing apparatus further comprises a second lifting assembly, the second lifting assembly comprises a second lifting driving member and a second stopping member, the second lifting driving member is connected to the second stopping member, the second lifting driving member is used for driving the second stopping member to move to the end of the positioning station along the transmission direction of the medium, or the second lifting driving member is used for driving the second stopping member to move to the position above the positioning station; the second lifting driving piece is electrically connected to the printing mechanism.

In one embodiment, the transport mechanism further comprises a take-up roller transport device disposed at an end of the belt transport device in a transport direction of the medium.

In one embodiment, the receiving roller transmission device is provided with a second photoelectric sensing part towards one end of the belt transmission device, the receiving roller transmission device is provided with a third photoelectric sensing part away from the other end of the belt transmission device, and the second photoelectric sensing part and the third photoelectric sensing part are both electrically connected with the feeding roller transmission device.

In one embodiment, the receiving roller conveying device comprises a plurality of receiving rubber rollers.

In one embodiment, the belt transfer device comprises an air suction belt.

In one embodiment, the feed roller transport device comprises a plurality of feed rubber rollers.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a top view of a printing apparatus provided in an embodiment of the present application;

FIG. 2 is an axial view of a printing apparatus provided in an embodiment of the present application;

FIG. 3 is an enlarged view of a portion A;

FIG. 4 is a partial enlarged view of the point B;

fig. 5 is another axial view of a printing apparatus provided in an embodiment of the present application;

fig. 6 is a partially enlarged view of C.

Wherein, in the figures, the respective reference numerals:

100. a printing device; 10. a transport mechanism; 11. a feed roll conveying device; 12. a belt transmission device; 13. a receiving roller transmission device; 20. positioning the beam; 30. a positioning assembly; 31. a first positioning member; 32. a second positioning member; 40. a printing mechanism; 41. printing the trolley; 42. printing a beam; 50. an access sensing element; 60. an adjustment assembly; 61. a first adjustment member; 62. a second adjustment member; 63. adjusting the driving member; 70. a first lifting assembly; 71. a first blocking member; 81. a first photoelectric sensing element; 82. a second photoelectric sensing element; 83. a third photoelectric sensing element; 90. a second lifting assembly; 91. a second lifting drive member; 92. a second barrier.

Detailed Description

Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative and intended to explain the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings, which is for convenience and simplicity of description, and does not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, is not to be considered as limiting.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

The printing device is one of the output devices of the computer for printing the computer processing results on the relevant media, and the printing device can print on various media (including but not limited to PVC, acrylic, glass, corrugated paper, etc.). Present common printing apparatus generally can only print a medium simultaneously, through the manual work under the effect of locating plate, places the printing medium location at the printing station, then utilizes printing apparatus's printing mechanism to print the medium. When batch printing is required, the printing apparatus cannot meet the demand for yield.

From this, this application embodiment provides a printing apparatus, can make a plurality of stations of feed roll transmission device convey the polylith medium simultaneously, and polylith medium accomplishes the printing on a plurality of printing stations of belt transmission device, has improved production efficiency effectively.

Referring to the drawings, the embodiment of the application provides a printing apparatus 100, which comprises a conveying mechanism 10, a positioning beam 20 and a plurality of positioning assemblies 30, wherein the conveying mechanism 10 comprises a feed roller conveying device 11 and a belt conveying device 12 which are sequentially arranged along a conveying direction of a medium, the feed roller conveying device 11 is provided with a plurality of feeding stations which are arranged along the conveying direction perpendicular to the medium, and the belt conveying device 12 is provided with a plurality of printing stations corresponding to the feeding stations; the positioning beam 20 is arranged above the feeding roller conveying device 11 along the direction perpendicular to the conveying direction of the medium; the positioning assemblies 30 are arranged on the positioning beam 20 at intervals, and the positioning assemblies 30 are respectively arranged on the corresponding feeding stations; the positioning assembly 30 includes a first positioning member 31 and a second positioning member 32, and the first positioning member 31 and the second positioning member 32 are disposed on the positioning beam 20 and spaced apart from each other.

The feeding station on the feeding roller transmission device 11 is used for placing media, and the positioning assembly 30 on the feeding station is used for positioning the media so that the media can pass through, and the feeding roller transmission device 11 can be sent to the printing station to complete printing when being conveyed to the belt transmission device 12. Specifically, the number of the feeding stations may be multiple, for example, three feeding stations, five feeding stations, eight feeding stations, ten feeding stations, and the like are provided, and the specific number of the feeding stations may be selected according to actual requirements.

The print station on the belt transport 12 is used to place media and perform the printing operation on the media at the print station. It can be understood that the printing stations are opposite to the feeding station in the transmission direction of the medium, that is, when the medium is at the feeding station, the medium can move into the corresponding printing station through the transmission action of the feeding roller transmission device 11 and the belt transmission device 12.

The positioning assemblies 30 are arranged on the positioning beam 20 at intervals, and the positioning assemblies 30 are arranged on the corresponding feeding stations to position and limit the media on the feeding stations so that the media can be fed into the printing stations during transmission. The first positioning piece 31 and the second positioning piece 32 of the positioning assembly 30 are arranged at intervals, so that a medium can be placed between the first positioning piece 31 and the second positioning piece 32, and the medium is positioned and arranged on the corresponding feeding station through the limiting action of the first positioning piece 31 and the second positioning piece 32; specifically, one end of the medium may abut against the second positioning member 32, so that the second positioning member 32 is more flat. The first positioning member 31 and the second positioning member 32 may be in a positioning plate structure, or a positioning rod structure.

The printing equipment 100 provided by the embodiment of the application utilizes the feeding roller transmission device 11 to perform feeding operation, and printing operation is completed on the printing stations of the belt transmission device 12, a plurality of feeding stations are arranged on the feeding roller transmission device 11, and a plurality of positioning components 30 are arranged on the positioning beam 20, so that each positioning component 30 is respectively arranged on the corresponding feeding station, a plurality of media can be simultaneously conveyed by utilizing the plurality of feeding stations, and the plurality of media are respectively arranged between the first positioning piece 31 and the second positioning piece 32 of the corresponding positioning component 30 to realize positioning adjustment, and then are conveyed to the belt transmission device 12 through the feeding roller transmission device 11, printing of the plurality of media is completed on the plurality of printing stations, the conveying efficiency and the printing efficiency of the media are effectively improved, and the requirement of batch production is met.

Referring to the drawings, in one embodiment, the feed roller conveying device 11 further has a plurality of positioning stations corresponding to the feeding stations, and the positioning stations and the feeding stations are respectively disposed on two opposite sides of the positioning beam 20. The medium is arranged on the feeding station and can be transmitted to the positioning station through the transmission function of the feeding roller transmission device 11.

The printing apparatus 100 includes a printing mechanism 40, and the printing mechanism 40 is disposed above the belt conveyor 12 and is used for printing on a medium at a printing station. It will be appreciated that the printing mechanism 40 is capable of printing on the media at the print station after the media is fed from the feed station to the print station via the transport operation of the feed roller transport 11 and the belt transport 12. Specifically, the printing mechanism 40 includes a printing carriage 41 and a printing cross beam 42 disposed above the belt transport 12, the printing carriage 41 being capable of reciprocating on the printing cross beam 42 to perform a printing operation on media at a printing station below. The printing mechanism 40 is provided with proximity sensing elements 50 for detecting the media entering the positioning stations, specifically, the proximity sensing elements 50 are distributed on the printing beam 42 at intervals, the number of the proximity sensing elements 50 is the same as that of the positioning stations, and the proximity sensing elements 50 are used for sensing whether the media at the corresponding positioning stations are in place.

The printing apparatus 100 further includes a plurality of adjusting assemblies 60, the adjusting assemblies 60 are arranged at intervals on a side wall surface of the positioning beam 20 away from the feeding station, and each adjusting assembly 60 is arranged on a corresponding positioning station; the adjusting assembly 60 includes a first adjusting member 61, a second adjusting member 62 and an adjusting driving member 63, the first adjusting member 61 and the second adjusting member 62 are disposed on a side of the positioning beam 20 away from the printing station, the first adjusting member 61 is configured to be in the same plane with the first positioning member 31, the second adjusting member 62 is configured to be in the same plane with the second positioning member 32, and the adjusting driving member 63 is connected to the first adjusting member 61 and used for driving the first adjusting member 61 to slide on the positioning beam 20.

The adjusting assembly 60 is used for positioning and adjusting the media on the corresponding positioning station, so that the media are not inclined when being sent to the printing station, and the printing effect is guaranteed. The first adjusting member 61 and the second adjusting member 62 may adopt an adjusting rod structure, or an adjusting plate structure; the adjustment drive 63 may be a drive cylinder, the position of which is adjusted by connecting the piston of the drive cylinder to the first adjustment member 61 so that the adjustment member slides on the positioning beam 20 to approach the second adjustment member 62, thereby urging the medium against the second adjustment member 62.

Taking the first adjusting piece 61 and the second adjusting piece 62 as examples, when the number of the feeding stations is eight, the number of the positioning stations and the printing stations is eight; placing eight media into eight feeding stations respectively, enabling the media to abut against a second positioning piece 32 for positioning and placing, and then transmitting the media to a positioning station through a feeding roller transmission device 11 for secondary positioning adjustment; the adjusting driving member 63 drives the first adjusting member 61 to move towards the second adjusting member 62, so that the first adjusting member 61 pushes the medium against the second adjusting member 62, and secondary positioning adjustment is achieved. And finally, conveying eight media into corresponding eight printing stations through the conveying action of the feeding roller conveying device 11 and the belt conveying device 12 to realize printing.

In a specific embodiment, two opposite sides of the positioning beam 20 are provided with guide rails, the first adjusting member 61 and the second adjusting member 62 are slidably connected to the guide rail on the corresponding side through a sliding block, and the first positioning member 31 and the second positioning member 32 are also slidably connected to the guide rail on the corresponding side through a sliding block; the second positioning element 32 is connected to the second adjusting element 62, the second positioning element 32 and the second adjusting element 62 are fixed to the guide rail, the first positioning element 31 is connected to the first adjusting element 61, the first positioning element 31 and the second positioning element 32 can synchronously slide on the guide rail, and the adjusting driving element 63 can simultaneously drive the first positioning element 31 and the second positioning element 32 to slide.

The proximity sensing element 50 is electrically connected to the adjusting driving element 63, the proximity sensing element 50 is capable of sensing whether the medium moves to a predetermined position (e.g., a positioning station), and when the proximity sensing element 50 senses that the medium moves to the positioning station, the proximity sensing element 50 sends an electrical signal to the adjusting driving element 63, so that the adjusting driving element 63 controls the first adjusting element 61 to move towards the second adjusting element 62 for performing a secondary positioning adjustment. Specifically, the proximity sensor element 50 may be a commercially available proximity sensor, and the structure of the sensor is not described in detail herein.

Referring to the drawings, in one embodiment, the printing apparatus 100 further includes a first lifting assembly 70, and the first lifting assembly 70 includes a first lifting driving member and a first stopping member 71, the first lifting driving member is connected to the first stopping member 71, and the first lifting driving member is configured to drive the first stopping member 71 to move to an end of the feeding station along a transport direction of the medium, or the first lifting driving member is configured to drive the first stopping member 71 to move above the feeding station.

As can be understood, when the first blocking member 71 moves to the end of the feeding station along the transmission direction of the medium, the first blocking member 71 can block the medium on the feeding station, that is, positioning adjustment of the medium in the transmission direction is realized; when the first blocking member 71 moves above the feeding station, the medium can pass through the first blocking member 71 below the first blocking member 71 and be transferred to the positioning station. The first blocking member 71 may be a blocking rod or a blocking plate, and the first blocking member 71 can block all feeding stations.

Referring to the drawings, in one embodiment, a first photoelectric sensing element 81 for detecting that the medium leaves the feeding station is disposed on the positioning beam 20, and the first photoelectric sensing element 81 is electrically connected to the first lifting driving element. Whether the medium leaves the feeding station or not is detected by using the first photoelectric sensing part 81, when the first photoelectric sensing part 81 detects that the tail end of the medium passes through the first photoelectric sensing part 81, the medium completely leaves the feeding station, at the moment, the first photoelectric sensing part 81 generates an electric signal to the first lifting driving part, so that the first lifting driving part drives the first blocking part 71 to move to the end part of the feeding station along the transmission direction of the medium, and at the moment, a new medium can be placed on the feeding station. The first photoelectric sensor is a common photoelectric sensor on the market, and the structure and the working principle of the first photoelectric sensor are not described herein again.

Referring to the drawings, in one embodiment, the printing apparatus 100 further includes a second lifting assembly 90, the second lifting assembly 90 includes a second lifting driving member 91 and a second stopping member 92, the second lifting driving member 91 is connected to the second stopping member 92, the second lifting driving member 91 is configured to drive the second stopping member 92 to move to an end of the positioning station along the conveying direction of the medium, or the second lifting driving member 91 is configured to drive the second stopping member 92 to move to above the positioning station; the second lifting driving member 91 is electrically connected to the printing mechanism 40. The second lifting driving member 91 may be a lifting cylinder or a lifting hydraulic cylinder, and the second blocking member 92 may be a blocking plate or a blocking rod.

It can be understood that when the second blocking member 92 moves to the end of the positioning station along the conveying direction of the medium, the medium cannot be conveyed continuously after being conveyed to the positioning station, and at this time, the medium is again positioned and adjusted in the conveying direction, and the adjusting assembly 60 can perform a secondary positioning adjustment on the medium perpendicular to the conveying direction of the medium, so as to ensure the normal operation of the subsequent printing operation. As the second barrier 92 moves above the positioning station, the media at the positioning station can continue to be transported to the print station for printing by the printing mechanism 40. The second lifting driving member 91 is electrically connected to the printing mechanism 40, and when the printing mechanism 40 starts to work, the printing mechanism 40 can control the second lifting driving member 91 to drive the second blocking member 92 to move to the end of the positioning station along the transmission direction of the media, and the media remaining on the feeding station can enter the positioning station for secondary positioning adjustment and waiting for printing operation.

Referring to the drawings, in one embodiment, the transport mechanism 10 further includes a receiving roller transport device 13 disposed at an end of the belt transport device 12 along a transport direction of the medium. By providing the receiving roller transmission device 13 at the end of the belt transmission device 12, after the medium printed at the printing station is transmitted to the receiving roller transmission device 13, the receiving roller transmission device 13 can transmit the medium for receiving operation.

Referring to the drawings, in one embodiment, a second photoelectric sensing part 82 is disposed at one end of the receiving roller transmission device 13 facing the belt transmission device 12, a third photoelectric sensing part 83 is disposed at the other end of the receiving roller transmission device 13 facing away from the belt transmission device 12, and both the second photoelectric sensing part 82 and the third photoelectric sensing part 83 are electrically connected to the feeding roller transmission device 11. The second photoelectric sensor is used for sensing the transmission of the medium to the receiving roller transmission device 13, and the third photoelectric sensing part 83 is used for sensing the transmission of the medium to one end of the receiving roller transmission device 13, which is far away from the belt transmission device 12.

It can be understood that, after the medium is printed at the printing station, the belt conveying device 12 moves the medium toward the receiving roller conveying device 13, and when the medium is just conveyed to the receiving roller conveying device 13, the second photoelectric sensing part 82 senses the medium and sends an electric signal to the feeding roller conveying device 11, so that the feeding roller conveying device 11 continues to convey the medium, the medium at the positioning station continues to be conveyed to the printing station, and the medium at the feeding station continues to be conveyed to the positioning station. Meanwhile, the printed medium is continuously transmitted on the receiving roller transmission device 13, when the medium is transmitted to one end of the receiving roller transmission device 13 away from the belt transmission device 12, that is, the medium reaches a designated position for receiving, the third photoelectric sensing part 83 senses the medium and sends an electric signal to the feeding roller transmission device 11, so that the feeding roller transmission device 11 stops transmission, at this time, the medium transmitted from the positioning station to the printing station is transmitted to the printing station, the medium transmitted from the feeding station to the positioning station is transmitted to the positioning station, and a new medium can be placed on the feeding station.

The second photoelectric sensing element 82 and the third photoelectric sensing element 83 are both commercially available photoelectric sensors, and therefore the detailed structure and operation principle thereof are not described herein.

Referring to the drawings, in one embodiment, the receiving roller conveying device 13 includes a plurality of receiving rollers. The receiving rubber roller is used for conveying the medium, the receiving rubber roller can protect the medium, the medium adopts glass as an example, when the glass is conveyed on the receiving rubber roller, the receiving rubber roller can not scratch the glass, friction between the receiving rubber roller and the glass can be increased, and the receiving rubber roller can be prevented from slipping.

Referring to the figures, in one embodiment, the belt conveyor 12 includes an air suction belt. When the medium is transmitted to the air suction belt of the belt transmission device 12, the air suction belt can fix the medium thereon because the air suction belt has an air suction function.

Referring to the figures, in one embodiment, the feed roller conveyor 11 includes a plurality of feed rollers. The feeding rubber roll is used for conveying the medium, the feeding rubber roll can protect the medium, and for example, the medium is made of glass.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims

1. A printing apparatus, comprising:

the conveying mechanism comprises a feeding roller conveying device and a belt conveying device which are sequentially arranged along the conveying direction of the medium, the feeding roller conveying device is provided with a plurality of feeding stations which are arranged along the conveying direction perpendicular to the medium, and the belt conveying device is provided with a plurality of printing stations corresponding to the feeding stations;

the positioning beam is arranged above the feeding roller conveying device along a direction perpendicular to the conveying direction of the medium;

the positioning components are arranged on the positioning beam at intervals and are respectively arranged on the corresponding feeding stations; the positioning assembly comprises a first positioning piece and a second positioning piece, and the first positioning piece and the second positioning piece are arranged on the positioning beam at intervals.

2. The printing apparatus of claim 1, wherein: the feeding roller transmission device is also provided with a plurality of positioning stations corresponding to the feeding stations, and the positioning stations and the feeding stations are respectively arranged on two opposite sides of the positioning beam;

the printing equipment comprises a printing mechanism, the printing mechanism is arranged above the belt transmission device and is used for printing the medium on the printing station, and an approaching sensing piece used for detecting the medium entering the positioning station is arranged on the printing mechanism;

the printing equipment further comprises a plurality of adjusting assemblies, the adjusting assemblies are arranged on a side wall surface of the positioning beam, which is far away from the feeding station, at intervals, and each adjusting assembly is arranged on the corresponding positioning station; the adjusting assembly comprises a first adjusting piece, a second adjusting piece and an adjusting driving piece, the first adjusting piece and the second adjusting piece are arranged on one side, away from the printing station, of the positioning beam, the first adjusting piece is configured to be in the same plane with the first positioning piece, the second adjusting piece is configured to be in the same plane with the second positioning piece, and the adjusting driving piece is connected to the first adjusting piece and used for driving the first adjusting piece to slide on the positioning beam; the approach sensing part is electrically connected with the adjusting driving part.

3. The printing apparatus of claim 2, wherein: the printing equipment further comprises a first lifting assembly, the first lifting assembly comprises a first lifting driving piece and a first blocking piece, the first lifting driving piece is connected to the first blocking piece, the first lifting driving piece is used for driving the first blocking piece to move to the end portion of the feeding station along the transmission direction of the medium, or the first lifting driving piece is used for driving the first blocking piece to move to the position above the feeding station.

4. The printing apparatus of claim 3, wherein: the positioning beam is provided with a first photoelectric sensing piece for detecting that a medium leaves the feeding station, and the first photoelectric sensing piece is electrically connected to the first lifting driving piece.

5. The printing apparatus of claim 4, wherein: the printing equipment further comprises a second lifting assembly, the second lifting assembly comprises a second lifting driving piece and a second stopping piece, the second lifting driving piece is connected to the second stopping piece, the second lifting driving piece is used for driving the second stopping piece to move to the end part of the positioning station along the transmission direction of the medium, or the second lifting driving piece is used for driving the second stopping piece to move to the position above the positioning station; the second lifting driving piece is electrically connected to the printing mechanism.

6. The printing apparatus of claim 1, wherein: the conveying mechanism further comprises a receiving roller conveying device arranged at the tail end of the belt conveying device along the conveying direction of the medium.

7. The printing apparatus of claim 6, wherein: the material receiving roller transmission device is provided with a second photoelectric sensing piece towards one end of the belt transmission device, a third photoelectric sensing piece is arranged at the other end of the material receiving roller transmission device, which is far away from the belt transmission device, and the second photoelectric sensing piece and the third photoelectric sensing piece are electrically connected with the feeding roller transmission device.

8. The printing apparatus of claim 6, wherein: the material receiving roller conveying device comprises a plurality of material receiving rubber rollers.

9. The printing apparatus according to any one of claims 1 to 8, wherein: the belt transmission device comprises an air suction belt.

10. The printing apparatus according to any one of claims 1 to 8, wherein: the feeding roller transmission device comprises a plurality of feeding rubber rollers.