CN214727256U

CN214727256U - Printing roller cooling device for printing

Info

Publication number: CN214727256U
Application number: CN202120475723.2U
Authority: CN
Inventors: 高盟盟; 程国伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-11-16
Anticipated expiration: 2031-03-05

Abstract

The utility model relates to a printing roller cooling device for printing, a heat conduction cavity is arranged in a printing roller, an air-out through groove is arranged in a first rotating shaft and is connected with an air-out pipe, a return air through groove is arranged in a second rotating shaft and is connected with a return air pipe, and a heat exchange device is connected between the air-out pipe and the return air pipe; the heat exchange device comprises a box body, a heat exchanger, a low-temperature channel and a high-temperature channel, wherein the low-temperature channel and the high-temperature channel are connected with the heat exchanger; one end of the high-temperature channel is connected with the air outlet pipe, and the other end of the high-temperature channel is connected with the air return pipe; the heat exchanger comprises a first multilayer unidirectional channel and a second multilayer unidirectional channel, and the first channel and the second channel are respectively communicated with the low-temperature channel and the high-temperature channel. The utility model discloses an air-cooled heat absorption reduces printing roller temperature, prolongs the life of printing roller.

Description

Printing roller cooling device for printing

Technical Field

The utility model relates to the field of printing technology, concretely relates to printing roller cooling device is used in printing.

Background

Printing is a technique of transferring ink to the surface of a material such as paper, fabric, plastic, or leather by performing processes such as plate making, inking, and pressing on an original such as characters, pictures, photographs, or forgery prevention, and thereby mass-transferring the content of the original. Printing is the process of transferring the approved printing plate to the printing stock by printing machine and special ink.

The printing roller of lithography apparatus temperature risees easily when the printing, needs cool off, and at present, the cooling to the printing roller adopts cooling blower to cool off more, but adopts cooling blower's cooling method efficiency lower, leads to printing roller surface temperature to be in high always.

In view of the above, the present invention provides a roller cooling device for a printing apparatus, which is improved in view of the conventional structure and defects, so as to achieve the purpose of higher practical value.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a printing roller cooling device is used in printing can realize the forced air cooling to the printing roller, has improved the cooling effect of printing roller, prolongs its life.

The utility model discloses a realize through following technical scheme:

the printing roller cooling device for printing comprises a printing roller, wherein a first rotating shaft and a second rotating shaft are respectively arranged at two ends of the printing roller, a heat conduction cavity is arranged in the printing roller, an air outlet through groove communicated with the heat conduction cavity is formed in the first rotating shaft and is connected with an air outlet pipe, an air return through groove communicated with the heat conduction cavity is formed in the second rotating shaft and is connected with an air return pipe, and the air outlet pipe and the air return pipe are connected through a heat exchange device;

the heat exchange device comprises a box body, wherein a heat exchanger, a low-temperature channel and a high-temperature channel are arranged in the box body, the low-temperature channel and the high-temperature channel are connected with the heat exchanger, one end of the low-temperature channel is provided with a low-temperature air inlet and is connected with an air inlet pipe, the other end of the low-temperature channel is provided with a high-temperature air outlet and is connected with an air outlet pipe, the air inlet pipe and the air outlet pipe are connected through a cooling water tank, the end part of the air inlet pipe is positioned above the liquid level of the cooling water tank, and the end part of the air outlet pipe is positioned below the liquid level of the cooling water tank; one end of the high-temperature channel is connected with the air outlet pipe, and the other end of the high-temperature channel is connected with the air return pipe; the heat exchanger comprises a multi-layer one-way channel I and a multi-layer one-way channel II, wherein the multi-layer one-way channel I and the multi-layer one-way channel II are respectively communicated with the low-temperature channel and the high-temperature channel.

This scheme is through setting up heat exchange device, set up two independent closed endless heat transfer passageways in the heat exchange device, utilize two passageways to carry out the heat transfer in the heat exchanger, independent each other, the hot-air in the printing roller gets into in the heat exchanger by high temperature channel, the low temperature air in the coolant tank gets into in the heat exchanger by low temperature channel, realize the heat transfer through the difference in high-low temperature, the hot-air after the cooling gets back to the heat conduction intracavity of printing roller from the return air duct and continues the heat conduction, can realize the air-cooled cooling that lasts to the printing roller, and the cooling efficiency is improved.

Furthermore, the heat exchanger comprises a support frame, a bottom plate of the multilayer channel and a plurality of layers of side plates arranged at intervals, and the support frame is respectively connected with the low-temperature channel and the high-temperature channel.

The heat exchanger is used for installing the first channel and the second channel through the supporting frame, and the heat exchanger is matched with the floor and the side plates of the multi-layer channels to realize stable installation.

Furthermore, a first fan which sucks low-temperature air from a low-temperature air inlet and discharges the low-temperature air from a high-temperature air outlet is installed in the low-temperature channel, and a second fan which sucks hot air out of the printing roller and discharges the hot air from an air return pipe is installed in the high-temperature channel.

The second fan that sets up in the high temperature passageway can take out the hot-air in the printing roller and get into heat exchange device in, the first fan that sets up in the low temperature passageway can take out the low temperature air of cooling water tank internal cooling and get into heat exchange device in, through heat exchanger's heat exchange, the temperature risees after the low temperature air heat absorption and gets into cooling water tank and contact the cooling water cooling and become the low temperature air again, and the hot-air in the high temperature passageway absorbs the heat of printing roller in getting into again through the return air pipe after the heat transfer in the printing roller again.

Further, be provided with the copper pipe that is the laminating of heliciform structure and heat conduction intracavity wall in the heat conduction intracavity, the both ends of copper pipe are led to the groove and are led to the groove grafting with the air-out respectively with the return air.

The copper pipe heliciform in the printing roller is laminated in the surface of heat conduction intracavity wall, can effectively increase heat transfer area, absorbs the heat more, improves the quality of printing, has prolonged the life of printing roller.

The utility model has the advantages that:

utilize heat exchanger in the heat exchange device to carry out the heat transfer with the high temperature air in low temperature air and the printing roller, when leading out printing roller hot-air, send the low temperature air after the heat transfer back to the printing roller by the return air duct, and then improve the radiating efficiency, compare with prior art, improved the cooling effect of printing roller, prolonged the life of printing roller, guaranteed the printing effect.

Two independent air channels, namely a low-temperature channel and a high-temperature channel in the heat exchanger are not communicated with the outside, and are in closed circulation independently, so that the heat exchange efficiency is kept, the energy consumption is reduced, and the cooling cost is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic structural diagram of a heat exchanger according to the present invention.

Shown in the figure:

1. printing roller, 2, first pivot, 3, second pivot, 4, hot-air conduction chamber, 5, copper pipe, 6, return air logical groove, 7, air-out logical groove, 8, play tuber pipe, 9, return air pipe, 10, heat exchange device, 11, low temperature passageway, 12, heat exchanger, 13, high temperature passageway, 14, low temperature air inlet, 15, high temperature gas outlet, 16, intake pipe, 17, the outlet duct, 18, coolant tank, 19, passageway one, 20, passageway two, 21, curb plate, 22, support column.

Detailed Description

In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.

The utility model provides a printing roller cooling device for printing, including printing roller 1, the both ends of printing roller 1 are provided with first pivot 2 and second pivot 3 respectively, 1 inside heat conduction chamber 4 that is equipped with of printing roller, be equipped with in the first pivot 2 with the air-out logical groove 7 and connect out tuber pipe 8 of 4 intercommunications in heat conduction chamber, be equipped with in the second pivot 3 with the return air logical groove 6 and connect return air pipe 9 of 4 intercommunications in heat conduction chamber, connect through heat exchange device 10 between play tuber pipe 8 and the return air pipe 9.

In order to strengthen the heat exchange effect, be provided with in the heat conduction chamber 4 and be the copper pipe 5 that heliciform structure and 4 inner walls in heat conduction chamber laminated mutually, the both ends of copper pipe 5 are led to the groove and are led to the groove grafting with the air-out groove respectively with the return air.

The heat exchange device 10 in the utility model comprises a box body, a heat exchanger 12 is arranged in the box body, and a low temperature channel 11 and a high temperature channel 13 which are connected with the heat exchanger 12, one end of the low temperature channel 11 is provided with a low temperature air inlet 14 and is connected with an air inlet pipe 16, the other end is provided with a high temperature air outlet 15 and is connected with an air outlet pipe 17, the air inlet pipe 16 is connected with the air outlet pipe 17 through a cooling water tank 18, the end part of the air inlet pipe 16 is positioned above the liquid level of the cooling water tank 18, and the end part of the air outlet pipe 17 is positioned below the liquid level of the cooling water tank 18; one end of the high-temperature channel 13 is connected with the air outlet pipe 8, and the other end is connected with the air return pipe 9; a first fan which sucks low-temperature air from a low-temperature air inlet 14 and discharges the low-temperature air from a high-temperature air outlet 15 is installed in the low-temperature channel 11, and a second fan which sucks hot air from the printing roller 1 and discharges the hot air from the return air duct 9 is installed in the high-temperature channel 13.

Wherein: the heat exchanger 12 comprises a first multilayer unidirectional channel 19 and a second multilayer unidirectional channel 20, and the first channel 19 and the second channel 20 are respectively communicated with the low-temperature channel 11 and the high-temperature channel 13. The heat exchanger 12 includes a support frame, a bottom plate of the multi-layer passage, and a plurality of side plates 21 arranged at intervals, and the support frame is connected to the low-temperature passage 11 and the high-temperature passage 13, respectively.

The supporting frame comprises four supporting columns 22 on four sides, each supporting column 22 is welded with the side walls of the low-temperature channel 11 and the high-temperature channel 13 respectively, the bottom plates of all layers are welded and fixed with the four supporting columns 22, and the two bottom plates at the upper end and the lower end of the heat exchanger 12 are welded with the upper wall and the lower wall of the low-temperature channel 11 and the high-temperature channel 13 respectively; the side plates 21 in each layer of channel are arranged at intervals, each layer of channel is only provided with two side plates 21 with corresponding surfaces, one side plate 21 is welded with two support columns 22, and the other side plate is welded with the other two support columns; the adjacent two layers of channels in the heat exchanger 12 pass through low-temperature air and high-temperature air respectively, and the low-temperature air and the high-temperature air are heat transferred through temperature difference due to the staggered arrangement of the multiple layers of channels, so that the heat exchange effect is achieved.

The utility model discloses a working process:

the heat exchange device works, a first fan in a low-temperature channel 11 rotates to suck low-temperature air from a low-temperature air inlet 14 and send the low-temperature air into a heat exchanger 12, a second fan in a high-temperature channel 13 rotates to suck high-temperature air in a printing roller 1 communicated with an air outlet pipe 8 into the heat exchanger 12, the low-temperature air and the high-temperature air flow into the heat exchanger 12 to realize heat exchange, the temperature of the low-temperature air is raised after absorbing heat, the low-temperature air enters a cooling water tank 18 to be contacted with cooling water to be cooled and is changed into low-temperature air again, the high-temperature air in the high-temperature channel 13 exchanges heat with the low-temperature air and then enters the printing roller 1 again through an air return pipe 9 to absorb the heat of the printing roller 1 again, the low-temperature channel 11 and the high-temperature channel 13 keep two independent circulation systems to continuously perform circulation heat exchange, the air after exchanging heat in the air return pipe 9 passes through a copper pipe 5 with a spiral structure, the flowing time is prolonged, and the heat is absorbed more, through long-time operation, can effectively realize the cooling to the printing roller, improve printing quality.

Of course, the above description is not limited to the above examples, and technical features of the present invention that are not described in the present application may be implemented by or using the prior art, and are not described herein again; the above embodiments and drawings are only used for illustrating the technical solutions of the present invention and are not intended to limit the present invention, and the present invention has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the spirit of the present invention should also belong to the protection scope of the claims of the present invention.

Claims

1. The utility model provides a printing roller cooling device for printing, includes the printing roller, the both ends of printing roller are provided with first pivot and second pivot, its characterized in that respectively:

a heat conduction cavity is arranged in the printing roller, an air outlet through groove communicated with the heat conduction cavity is arranged in the first rotating shaft and is connected with an air outlet pipe, a return air through groove communicated with the heat conduction cavity is arranged in the second rotating shaft and is connected with a return air pipe, and the air outlet pipe and the return air pipe are connected through a heat exchange device;

2. The printing roller cooling apparatus according to claim 1, wherein: the heat exchanger comprises a support frame, a bottom plate with multiple layers of channels and multiple layers of side plates arranged at intervals, wherein the support frame is connected with the low-temperature channel and the high-temperature channel respectively.

3. The printing roller cooling apparatus according to claim 1, wherein: and a first fan which sucks fresh air from the fresh air inlet and discharges the fresh air from the fresh air outlet is arranged in the low-temperature channel, and a second fan which sucks hot air from the printing roller and discharges the hot air from the return air pipe is arranged in the high-temperature channel.

4. The printing roller cooling apparatus according to claim 1, wherein: the heat conduction intracavity is provided with the copper pipe that is the heliciform structure and laminates mutually with the heat conduction intracavity, and the both ends of copper pipe are led to the groove and are led to the groove grafting with the air-out respectively with the return air.