CN218140596U - Single-group spray head type single-paper single-double-sided ink-jet printer - Google Patents

Single-group spray head type single-paper single-double-sided ink-jet printer Download PDF

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Publication number
CN218140596U
CN218140596U CN202222355507.1U CN202222355507U CN218140596U CN 218140596 U CN218140596 U CN 218140596U CN 202222355507 U CN202222355507 U CN 202222355507U CN 218140596 U CN218140596 U CN 218140596U
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paper
station
printing
transfer
control cam
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高鹏
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Weifang Ruike Intelligent Technology Co ltd
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Weifang Ruike Intelligent Technology Co ltd
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Abstract

The utility model discloses a singly organize shower nozzle formula sheet-fed single two-sided ink jet printer, including paper feeding unit, ink jet printing unit and delivery unit, the ink jet printing unit includes a printing cylinder, a set of shower nozzle subassembly, a transmission cylinder and one set of passback and transmits the mechanism, be provided with switching tooth switching control mechanism on the passback transmits the delivery path of mechanism. The utility model adopts the innovative layout design, the whole structure design is simple, the number of the whole rollers is greatly reduced, the equipment cost is greatly reduced, the paper handing-over times are few, and the paper surface changing is smooth and stable; on the basis of adopting a single group of spray head components, the opening and closing tooth state when the gripper bar on the back transmission mechanism reaches the set position is controlled by the opening and closing tooth switching control mechanism, so that not only is the quick switching operation successfully realized during single-sided and double-sided printing, but also the operation can be realized by combining a plurality of paper sheets during double-sided printing, and the printing efficiency is effectively improved.

Description

Single-group spray head type single-paper single-double-sided ink-jet printer
Technical Field
The utility model belongs to the technical field of ink jet printing machinery, concretely relates to adopt single paper list two-sided digital ink jet printer that singly organize the shower nozzle to realize two-sided printing.
Background
The single-sided and double-sided digital ink jet printing machine for the single paper can realize single-sided printing or double-sided printing operation of the single paper according to the printing requirements of customers, and is emerging printing equipment. The single paper ink jet printing process requires high paper positioning precision, the transfer and the handover of the paper among the units are completed by the gripper bar, and the paper feeding path, the paper transfer and handover times, the paper transfer and handover stability and the paper turnover smoothness of the paper have important influences on the high-speed stable printing performance and the manufacturing cost of the equipment.
The single-paper single-double-sided ink-jet printer on the market at present mainly comprises two technical routes of realizing double-sided printing by adopting a single-group spray head and realizing double-sided printing by adopting a double-group spray head, wherein the two technical routes comprise a paper feeding unit, an ink-jet printing unit and a paper collecting unit, the ink-jet printing unit is a core unit, but the two technical routes at present are not mature enough.
The ink-jet printer has the advantages that double-sided printing is realized by only one printing roller and one set of ink-jet system, paper is always subjected to paper head connection between the rollers, and the paper turning smoothness is good. But has the following disadvantages: (1) The machine type needs a large number of rollers as a whole, so that the equipment cost is high, the paper transfer and handover times are large, the fault nodes are large, the fault rate is high, and the paper transfer and handover stability is influenced; (2) When double-sided printing is performed, only after one sheet of paper completes double-sided printing, the next sheet of paper can be subjected to double-sided printing, and the printing efficiency is low.
Adopt two groups shower nozzle to realize two-sided printing's ink jet printer, ink jet printing unit includes two printing cylinder (openly printing cylinder and reverse side printing cylinder), two sets of ink jet system, a plurality of transfer cylinder, a turn-over cylinder and one set of pendulum paper mechanism, and this model adopts two printing cylinder and two sets of ink jet system to realize two-sided printing, and the advantage is that printing speed is fast, printing efficiency is high, but the shortcoming is: (1) The number of the rollers which need to be configured is large, two sets of ink jet systems are needed, and the equipment cost is high; (2) After the paper finishes front printing on the front printing roller, the head of the paper needs to be converted into the tail of the paper by the cooperation of the paper placing mechanism and the turnover roller and then the paper is sent into the reverse printing roller to carry out reverse printing, the paper is easy to wrinkle when the paper is placed, the turnover of the paper is smooth and not good, and the failure rate is high.
SUMMERY OF THE UTILITY MODEL
To the above deficiency among the prior art, the utility model aims to solve the technical problem that a complete machine cylinder configuration is small in quantity, equipment cost is low, the paper handing-over number of times is few, the paper trades the smooth and easy stable single unit nozzle formula sheet-fed list two-sided ink jet printer of face.
In order to solve the technical problem, the technical scheme of the utility model is that: the single-group spray head type single-paper single-double-sided ink-jet printer comprises a paper feeding unit, an ink-jet printing unit and a paper collecting unit, wherein the ink-jet printing unit comprises a printing roller, a group of spray head components, a transmission roller and a set of return and transmission mechanism;
the spray head assembly is arranged above the printing roller, the transfer roller and the printing roller rotate oppositely and are in tangent fit, and the return transfer mechanism is connected with the transfer roller; the printing cylinder, the transfer cylinder and the return transfer mechanism are respectively provided with a gripper bar for handing over and transferring paper;
an opening and closing gripper switching control mechanism is arranged on a conveying path of the return conveying mechanism and controls switching of an opening and closing gripper state when a gripper bar on the return conveying mechanism reaches a set position; when single-sided printing is performed, the return transfer mechanism transfers the printed paper to the delivery unit under the control of the opening and closing tooth switching control mechanism; during double-sided printing, the return transfer mechanism returns the paper to the paper feeding unit under the control of the switching control mechanism for the opening and closing teeth.
The paper feeding unit comprises a paper feeding assembly and a paper conveying belt.
As one preferable technical solution, the switching control mechanism for the opening and closing teeth comprises a transfer control cam rotatably provided at a first station and a delivery control cam fixedly provided at a second station, the first station being located upstream of the second station; the transfer control cam can be rotationally changed to a first orientation posture and a second orientation posture;
when the transfer control cam is in the first azimuth posture, the gripper bar on the back transfer mechanism is not acted by the transfer control cam when passing through the first station, so that the closed gripper state is still kept to continuously transfer the paper, and when passing through the second station, the gripper bar is acted by the delivery control cam, the closed gripper state is switched to the open gripper release state, and the printed paper is transferred to the delivery unit; when the transfer control cam is in the second azimuth posture, the gripper bar on the back transfer mechanism is under the action of the transfer control cam when passing through the first station, and is switched to the open gripper release state from the closed gripper gripping state, so that the paper is back transferred to the paper feeding unit.
As another preferable mode, the switching tooth switching control mechanism includes a switching control cam that is reciprocally movable along the transport path, the switching control cam being reciprocally movable along the transport path to a first station and a second station, the first station being located upstream of the second station;
when the switching control cam moves to the second station, the gripper bar on the back transmission mechanism still keeps a closed gripper state to continuously transmit paper due to no cam action when passing through the first station, and is switched to an open gripper release state from the closed gripper state under the action of the switching control cam when passing through the second station, so that the printed paper is transmitted to the paper delivery unit; when the switching control cam moves to the first station, the gripper bar on the back transmission mechanism is acted by the switching control cam when passing through the first station, and is switched to an open gripper release state from a closed gripper gripping state, so that paper is transmitted back to the paper feeding unit.
As a preferable technical scheme, the back-feeding transfer mechanism comprises a chain transmission mechanism arranged between a transmission roller and a paper collecting unit, a paper feeding end of the chain transmission mechanism is connected with the transmission roller, and a paper discharging end of the chain transmission mechanism is connected with the paper collecting unit.
As a preferred technical solution, the back-transfer conveying mechanism further includes a paper conveying mechanism disposed between the chain conveying mechanism and the paper conveying belt, and the paper conveying mechanism preferably employs an air-suction conveying belt.
As an optimized technical scheme, the air suction conveying belt is obliquely arranged, the upper end of the air suction conveying belt is close to the chain conveying mechanism, and the lower end of the air suction conveying belt is close to the paper conveying belt.
As the preferred technical scheme, a blowing component used for blowing the tail of the paper to the air suction conveying belt is arranged above the air suction conveying belt.
As the preferred technical scheme, an air suction assembly is arranged below the air suction conveying belt.
As a preferable technical scheme, paper guide wheels are respectively arranged above and below the paper conveying belt.
As a preferred technical scheme, the chain transmission mechanism comprises a driving wheel, a driven wheel and a transmission chain sleeved on the driving wheel and the driven wheel, and gripper bars are arranged on the transmission chain at intervals.
Compared with the prior art, the utility model discloses following beneficial effect has at least:
(1) The novel ink jet printing unit only comprises a printing roller, a group of spray head assemblies, a transmission roller and a set of return transmission mechanism, the return transmission mechanism can transmit printed paper to a paper collecting unit and can transmit the paper which is printed on one side and turned over back to a paper conveying belt for double-side printing, the structural design of the whole machine is simple, the number of rollers of the whole machine is greatly reduced, and the equipment cost is greatly reduced.
(2) In the whole spray printing process, the paper transfer and handover times are few, a paper placing mechanism is not needed for paper turnover in the double-sided printing process, the paper transfer and handover stability and the paper turnover smoothness are good, and the failure rate is low.
(3) On the basis of adopting single group of shower nozzle subassemblies, the passback is turned on and is transfered the mechanism and is cooperated with the conveyer belt that induced drafts through the chain transport mechanism, realize the tooth control of opening and closing to each gripper bar on the chain transport mechanism through the tooth switching control mechanism that opens and closes simultaneously, so not only successfully realized the fast switch over operation when single double-sided printing, and can realize during double-sided printing that many papers are a set of and carry out the operation, after a set of paper finishes the front printing, return this group of papers to carry out reverse side printing in proper order by the chain transport mechanism again, when carrying out single paper double-sided printing in single group shower nozzle printing machine in prior art, can only carry out the mode that next paper double-sided printing after a paper finishes double-sided printing, effectively improved printing efficiency.
Drawings
The following drawings are only intended to illustrate and explain the present invention, and do not limit the scope of the present invention. Wherein:
fig. 1 is a schematic structural diagram of a first embodiment of the present invention;
fig. 2 is a state diagram of the direction change of the transfer control cam according to the first embodiment of the present invention;
FIG. 3 is a schematic diagram of a paper feeding path in single-sided printing according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a paper feeding path for reverse printing after the front printing is completed according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 6 is a schematic view of a paper feeding path in single-sided printing according to a second embodiment of the present invention;
fig. 7 is a schematic view of a paper feeding path in reverse printing after the completion of front printing according to the second embodiment of the present invention.
In the figure: 10-a paper feeding unit; 11-a paper feeding assembly; 12-conveying paper tape; 13-a paper guide wheel; 14-a suction assembly; 20-an inkjet printing unit; 21-a printing cylinder; 22-a spray head assembly; 23-a transfer drum; 24-a chain transport mechanism; 241-a driving wheel; 242-a driven wheel; 243-a conveying chain; 25-a paper transfer mechanism; 26-a transfer control cam; 27-delivery control cam; 28-a blowing assembly; 29-switching control cam; 30-delivery unit.
Detailed Description
The invention is further explained below with reference to the drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention have been described by way of illustration only. Needless to say, a person skilled in the art realizes that the described embodiments may be modified in various different ways, without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and not intended to limit the scope of the claims.
Example one
As shown in fig. 1, the single-group nozzle type single-sheet single-double-sided inkjet printer includes a paper feeding unit 10, an inkjet printing unit 20, and a paper collecting unit 30, where the paper feeding unit 10 is used for feeding and conveying paper, and includes a paper feeding assembly 11 and a paper conveying belt 12, the paper collecting unit 30 is used for collecting the printed paper, and the paper feeding unit 10 and the paper collecting unit 30 are common structures known in the field of printing machinery, and are not described herein again.
Referring to fig. 1, the inkjet printing unit 20 includes a printing cylinder 21, a set of nozzle assemblies 22, a transfer cylinder 23, and a set of return transfer mechanisms; in this embodiment, the feeding-back transfer mechanism includes a chain transfer mechanism 24 and a paper transfer mechanism 25, the chain transfer mechanism 24 is disposed between the transfer roller 23 and the paper collecting unit 30, the paper feeding end of the chain transfer mechanism 24 is engaged with the transfer roller 23, and the paper discharging end of the chain transfer mechanism 24 is engaged with the paper collecting unit 30. The paper transfer mechanism 25 is disposed between the chain transfer mechanism 24 and the paper feed belt 12, and is used for transferring paper back to the paper feed belt 12 during duplex printing.
The printing cylinder 21, the transfer cylinder 23, the chain transmission mechanism 24 and the paper transfer mechanism 25 are rotatably mounted on the frame, the spray head assembly 22 is arranged above the printing cylinder 21 and used for spray printing, and the transfer cylinder 23 and the printing cylinder 21 rotate oppositely and are in tangential fit. The printing cylinder 21, the transfer cylinder 23 and the chain conveying mechanism 24 are respectively provided with a gripper bar for handing over and transferring the paper, the gripper bar is a commonly-known structure in the printing field, and the structural principle is not repeated. After the paper is subjected to front-side printing on the printing cylinder 21, the printing cylinder 21 transfers the paper from head to the transfer cylinder 23, the printing surface of the paper faces the surface of the transfer cylinder 23, and the transfer cylinder 23 transfers the paper from head to the chain conveying mechanism 24;
referring to fig. 1, the chain transmission mechanism 24 includes a driving wheel 241, a driven wheel 242, and a transmission chain 243 sleeved on the driving wheel 241 and the driven wheel 242, a gripper bar is arranged on the transmission chain 243 at intervals, in this embodiment, the transmission chain 243 includes a horizontal transmission section and a vertical transmission section, the vertical transmission section is engaged with the transfer drum 23, and the horizontal transmission section is engaged with the paper receiving unit 30; of course, other arrangements can be adopted, and all the arrangements are within the protection scope of the present invention.
An opening and closing element switching control mechanism is provided on the conveying path of the chain conveying mechanism 24, and controls switching of an opening and closing element state when the gripper bar on the chain conveying mechanism 24 reaches a set position.
In this embodiment, the switching control mechanism for the opening and closing teeth includes a transfer control cam 26 rotatably disposed at the first station a and a delivery control cam 27 fixedly disposed at the second station B, both the first station a and the second station B are located on the conveying path of the chain conveying mechanism 24, and the first station a is located upstream of the second station B; it should be noted that "transfer control" and "delivery control" are limitations on the cam for convenience and simplicity in describing the present invention. The transfer control cam 26 may be connected to a rotation driving mechanism (not shown in the figure) such as a servo motor, and the servo motor may drive the transfer control cam 26 to rotate and transform to a first orientation posture I and a second orientation posture II (refer to fig. 2), that is, transform the positions of the high and low points of the cam curved surface, according to the printing requirement. When the transfer control cam 26 is in the first azimuth posture I, the gripper bar on the chain conveying mechanism 24 is not acted by the curved surface of the transfer control cam 26 when passing through the first station a, so that the closed gripper state is still maintained and the paper is continuously conveyed, and is acted by the delivery control cam 27 when passing through the second station B, the gripper bar is switched from the closed gripper state to the open gripper release state, and the printed paper is transferred to the delivery unit 30; when the transfer control cam 26 is in the second azimuth posture II, the gripper bar on the chain conveying mechanism 24 is subjected to the curved surface action of the transfer control cam 26 when passing through the first station a, and the closed gripper gripping state is switched to the open gripper release state.
The paper transfer mechanism 25 preferably employs an air suction conveyor belt. Referring to FIG. 1, the suction conveyor belt is preferably inclined with its upper end adjacent the chain transfer mechanism 24 and its lower end adjacent the paper conveyor belt 12. Preferably, the air blowing assembly 28 is arranged above the air suction conveying belt, after the gripper bar on the chain conveying mechanism 24 is opened to release the head of the paper, the tail of the paper is blown to the air suction conveying belt through the air blowing assembly 28, the air suction conveying belt absorbs the paper and returns the paper to the paper conveying belt 12, the tail of the paper reaches the paper conveying belt first, and the paper is turned over. The below of the conveyer belt that induced drafts is provided with the subassembly 14 that induced drafts better to avoid the tail of paper to warp when arriving defeated paper tape, guarantee that the paper transfer is smooth and easy stable.
The paper guide wheels 13 are preferably provided above and below the paper feed belt 12, respectively, to facilitate free feed switching of paper fed from the paper feed assembly 11 or returned from the paper transfer mechanism 25.
The printing control method of the present embodiment is as follows:
referring to fig. 3, during single-sided printing, the transfer control cam 26 is adjusted to the first azimuth attitude I and the cam attitude is maintained unchanged, the paper is conveyed to the printing cylinder 21 by the paper conveying belt 12, the paper is adsorbed on the printing cylinder 21 and rotates along with the printing cylinder to the position below the nozzle assembly 22, the nozzle assembly 22 performs single-sided printing on the paper, the paper after single-sided printing is handed over from the printing cylinder 21 and is transferred to the transfer cylinder 23, the transfer cylinder 23 hands and transfers the paper to the chain conveying mechanism 24, a gripper bar on the chain conveying mechanism 24 is not affected by a cam curved surface when passing through the transfer control cam 26, so that the paper is continuously conveyed forward in a closed gripper state, and when the gripper bar on the chain conveying mechanism 24 passes through the delivery control cam 27, the gripper bar is opened, and the paper after single-sided printing is released to the delivery unit 30; in the single-sided printing operation, the paper transfer mechanism 25 (air suction conveyor belt) does not operate.
Referring to fig. 2 and 4, in duplex printing, the transfer control cam 26 is alternately changed between a first orientation posture I and a second orientation posture II; when the front side printing is carried out, the transfer control cam 26 is changed to a second azimuth posture II, the paper conveying belt 12 conveys paper to the printing cylinder 21, the paper is adsorbed on the printing cylinder 21 and rotates along with the printing cylinder 21 to the position below the spray head assembly 22, the spray head assembly 22 carries out front side printing on the paper, the paper after the front side printing is carried out is transferred to the transfer cylinder 23 from the paper head to the paper head of the printing cylinder 21, the printed surface of the paper after the transfer is towards the surface of the transfer cylinder 23, the transfer cylinder 23 transfers the paper to the paper head from the paper head to the chain conveying mechanism 24, the gripper bar on the chain conveying mechanism 24 is subjected to the action of the cam when passing through the transfer control cam 26, the closed gripper bar state is switched to the open gripper release state, the chain conveying mechanism 24 releases the paper, the air suction conveying belt sucks the paper (the printed surface of the paper is sucked towards the conveying belt), the tail of the paper reaches the paper conveying belt to complete the turnover before the paper belt, the paper is conveyed to the printing cylinder 21 again for the back side printing, the transfer control cam 26 is changed to a first side posture I (the same as the single side printing method when the single side printing is carried out, and the single side conveying unit 30 after the single side printing is carried out. Thus, through the transfer function of the chain conveying mechanism 24 and the air suction conveying belt, after a group of paper (such as 5 paper, 6 paper or other paper) is printed on the front side, the paper is sequentially transferred back to the paper conveying belt for reverse side printing.
Example two
The structure principle of this embodiment is basically the same as that of the first embodiment, and the same parts are not described again, and the only difference is that: referring to fig. 5, in the present embodiment, the opening/closing element switching control mechanism includes a switching control cam 29 that is reciprocally movable along the conveying path, and the switching control cam 29 is reciprocally movable along the conveying path to a first station a and a second station B, i.e., the cam is movable and switchable between the first station a and the second station B, the first station a being located upstream of the second station B;
referring to fig. 6, when the switching control cam 29 moves to the second station B, the gripper bar on the chain transport mechanism 24 still keeps the closed gripper state to continue transporting the paper due to no cam action when passing through the first station a, and is switched from the closed gripper state to the open gripper release state by the switching control cam 29 when passing through the second station B, and the printed paper is transferred to the paper delivery unit; referring to fig. 7, when the switching control cam 29 moves to the first station a, the gripper bar on the chain conveying mechanism 24 is switched from the closed gripper gripping state to the open gripper releasing state by the switching control cam 29 when passing through the first station a, and the paper is transmitted back to the paper feeding unit. For a specific method for controlling single-sided and double-sided printing, reference is made to the first embodiment, which is not described in detail.
To sum up, the utility model discloses an adopt innovative layout design, the inkjet printing unit only includes a printing cylinder, a set of shower nozzle subassembly, a transfer cylinder and one set of passback and transmits the mechanism, and the passback transmits the mechanism and both can transmit the paper after the printing is accomplished to the delivery unit, thereby can carry out two-sided printing to defeated paper tape with the paper backtracking after accomplishing single face printing and turn-ups again.
The obvious advantages of this model are as follows:
(1) The whole machine has simple structural design, greatly reduces the number of rollers of the whole machine, and greatly reduces the equipment cost. And in the whole jet printing process, the times of paper transfer and handover are few, a paper swinging mechanism is not needed when the paper is turned over during double-sided printing, the stability of paper transfer and handover and the smoothness of paper turning are good, and the failure rate is low.
(2) On the basis of adopting single group of shower nozzle subassemblies, the passback is turned over the mechanism and is cooperated with the conveyer belt that induced drafts through adopting the chain transport mechanism, open and close the tooth state when simultaneously reaching the settlement position through opening and closing tooth switching control mechanism control gripper bar on the chain transport mechanism, so not only successfully realized the fast switch over operation when single two-sided printing, and can realize during two-sided printing that many papers are a set of and carry out the operation, after a set of paper finishes the front printing, again by the chain transport mechanism with this group of paper return in proper order carry out reverse side printing, when single group shower nozzle printing machine carries out single paper two-sided printing in prior art, can only carry out next paper two-sided printing after can only finishing one paper, effectively improved printing efficiency.
The above description is only exemplary of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art should also realize that such equivalent changes and modifications can be made without departing from the spirit and principles of the present invention.

Claims (10)

1. Single group shower nozzle formula sheet-fed list two-sided ink jet printer, including paper feeding unit, ink jet printing unit and collection unit, its characterized in that: the ink-jet printing unit comprises a printing roller, a group of spray head components, a transmission roller and a set of return transmission mechanism;
the spray head assembly is arranged above the printing roller, the transfer roller and the printing roller rotate oppositely and are in tangent fit, and the return transfer mechanism is connected with the transfer roller; the printing roller, the transfer roller and the return transfer mechanism are respectively provided with a gripper bar for handing over transfer paper;
an opening and closing tooth switching control mechanism is arranged on a conveying path of the back conveying mechanism and controls the switching of the opening and closing tooth state when the gripper bar on the back conveying mechanism reaches a set position; when single-sided printing is performed, the return transfer mechanism transfers the printed paper to the delivery unit under the control of the opening and closing tooth switching control mechanism; in the case of double-sided printing, the return transfer mechanism returns the paper to the paper feed unit under the control of the switching control mechanism for the opening and closing blade.
2. A single-stack printhead single-sheet single-perfected ink jet printer as claimed in claim 1, wherein: the switching control mechanism for the opening and closing teeth comprises a transfer control cam which is rotatably arranged at a first station and a paper delivery control cam which is fixedly arranged at a second station, and the first station is positioned at the upstream of the second station; the transfer control cam can be rotationally changed to a first orientation posture and a second orientation posture;
when the transfer control cam is in the first position posture, the gripper bar on the transfer mechanism is not acted by the transfer control cam when passing through the first station, so that the closed gripper state is still kept to continuously convey the paper, and when passing through the second station, the gripper bar is acted by the delivery control cam, the closed gripper state is switched to the open gripper release state, and the printed paper is transferred to the delivery unit; when the transfer control cam is in the second azimuth posture, the gripper bar on the back transfer mechanism is under the action of the transfer control cam when passing through the first station, and is switched to the open gripper release state from the closed gripper gripping state, so that the paper is back transferred to the paper feeding unit.
3. A single-stack printhead single-sheet single-perfected ink jet printer as claimed in claim 1, wherein: the switching control mechanism comprises a switching control cam capable of moving back and forth along a conveying path, the switching control cam can move back and forth along the conveying path to a first station and a second station, and the first station is located at the upstream of the second station;
when the switching control cam moves to the second station, the gripper bar on the back transmission mechanism still keeps a closed gripper state to continuously transmit paper due to no cam action when passing through the first station, and is switched to an open gripper release state from the closed gripper state under the action of the switching control cam when passing through the second station, so that the printed paper is transmitted to the paper delivery unit; when the switching control cam moves to the first station, the gripper bar on the back transmission mechanism is acted by the switching control cam when passing through the first station, and is switched to an open gripper release state from a closed gripper gripping state, so that paper is transmitted back to the paper feeding unit.
4. A single-stack printhead single-sheet single-perfected ink jet printer as claimed in claim 1, wherein: the paper feeding unit comprises a paper feeding assembly and a paper conveying belt.
5. A single unit head type sheet-fed single duplex ink jet printer as set forth in claim 4, wherein: the back-transmission transfer mechanism comprises a chain transmission mechanism arranged between a transmission roller and a paper collection unit, the paper feeding end of the chain transmission mechanism is connected with the transmission roller, and the paper discharging end of the chain transmission mechanism is connected with the paper collection unit.
6. A single-unit-jet sheet-fed single-sided inkjet printer as claimed in claim 5, wherein: the back transmission transfer mechanism also comprises a paper transfer mechanism arranged between the chain transmission mechanism and the paper conveying belt.
7. A single-stack printhead type sheet-fed single-sided inkjet printer as claimed in claim 6, wherein: the paper transfer mechanism is an air suction conveying belt.
8. A single unit head type sheet-fed single duplex ink jet printer as set forth in claim 7, wherein: and a blowing assembly used for blowing the tail part of the paper to the air suction conveying belt is arranged above the air suction conveying belt.
9. A single-stack printhead single-sheet single-perfected ink jet printer as claimed in claim 7, wherein: and an air suction assembly is arranged below the air suction conveying belt.
10. A single-unit-head single-sheet single-perfected inkjet printer as claimed in any one of claims 4 to 9, wherein: paper guide wheels are respectively arranged above and below the paper conveying belt.
CN202222355507.1U 2022-09-05 2022-09-05 Single-group spray head type single-paper single-double-sided ink-jet printer Active CN218140596U (en)

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CN202222355507.1U CN218140596U (en) 2022-09-05 2022-09-05 Single-group spray head type single-paper single-double-sided ink-jet printer

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Application Number Priority Date Filing Date Title
CN202222355507.1U CN218140596U (en) 2022-09-05 2022-09-05 Single-group spray head type single-paper single-double-sided ink-jet printer

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CN218140596U true CN218140596U (en) 2022-12-27

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