CN109203645A

CN109203645A - A kind of vacuum absorption device of printing machine

Info

Publication number: CN109203645A
Application number: CN201811045683.7A
Authority: CN
Inventors: 唐灼林; 张涛; 李锦潮
Original assignee: Guangdong Dongfang Precision Science and Technology Co Ltd
Current assignee: Guangdong Dongfang Precision Science and Technology Co Ltd
Priority date: 2018-09-07
Filing date: 2018-09-07
Publication date: 2019-01-15

Abstract

The invention provides a vacuum adsorption device for a printing press, comprising a vacuum box arranged under a transmission wheel of the printing machine, a fan arranged on the vacuum box, an air exhaust slot arranged above the transmission wheel, and an exhaust air connected to the fan The connecting pipe between the outlet and the air exhaust slot; the air exhaust slot is provided with a downward opening, and the fan draws air from the vacuum box and discharges the air into the air exhaust slot through the connecting pipe. The vacuum adsorption device can make the air circulate in the printing press and reduce the dust from the surrounding environment entering the printing press.

Description

A kind of vacuum absorption device of printing machine

Technical field

The present invention relates to printer technology field, in particular to a kind of vacuum absorption device of printing machine.

Background technique

The vacuum absorption device of existing printing machine, the vacuum tank transmitted below wheel including printing machine is arranged in, and by Blower takes the air in vacuum tank away, generates negative pressure and transmits to which cardboard to be adsorbed in transmission wheel.And the air that blower extracts Often it is discharged outdoor, printing machine ambient air can be added to ceaselessly at vacuum tank in air pump, in order to which cardboard can be steady Surely it is adsorbed in transmission wheel and transmits, usually will use high-power blower, a large amount of air is extracted, while a large amount of in surrounding air Air adds in vacuum tank, and gas flow rates will bring a large amount of dusts in ambient enviroment into printing machine fastly, these powder Dirt can be adhered in printing paper plate face so that be printed onto ink can not on paper influences printing effect.

As it can be seen that the prior art has much room for improvement and improves.

Summary of the invention

Place in view of above-mentioned deficiencies of the prior art, the purpose of the present invention is to provide a kind of vacuum suction of printing machine dresses It sets, air can be made to circulate in printing machine, the dust for reducing ambient enviroment enters printing machine.

In order to achieve the above object, this invention takes following technical schemes:

A kind of vacuum absorption device of printing machine is arranged including the vacuum tank below the transmission wheel of printing machine is arranged in vacuum Blower on case is arranged in the air exhaust slot above transmission wheel, and connects the exhaust outlet of blower and the connecting tube of air exhaust slot；It is described Air exhaust slot is provided with opening directed downwardly, and the blower, which is evacuated from vacuum tank and passes through connecting tube, expels air into air exhaust slot.

In the vacuum absorption device of the printing machine, the connecting tube is provided with two, which connects respectively The both ends for wind groove of running in, blower can be discharged the air of extraction from two connecting tubes etc. point.

In the vacuum absorption device of the printing machine, the blower is vertically disposed at the center of vacuum tank bottom, Impeller protrudes into vacuum tank, and air inlet is offered right above impeller, and there are two the interior circumferential settings along air inlet of vacuum tank etc. The exhaust outlet for dividing ground to surround the air inlet, each exhaust outlet respectively pass through an exhausting duct and connect corresponding connecting tube.

In the vacuum absorption device of the printing machine, the exhaust outlet is scroll casing shape, two exhaust outlet central symmetries point Cloth.

In the vacuum absorption device of the printing machine, the exhausting duct is logical along the tangentially extending straight line of exhaust outlet Road.

In the vacuum absorption device of the printing machine, the air exhaust slot is rectangular-shape, is opened up on the side wall at both ends There is rectangle connector similar with the sidewall shape, the outlet of the connecting tube and the connector are adapted, the outlet of connecting tube It is connect with the connector.

In the vacuum absorption device of the printing machine, the opening of the air exhaust slot is provided with homogenating plate.

The utility model has the advantages that

The present invention provides a kind of vacuum absorption devices of printing machine, air exhaust slot are arranged in the top of transmission wheel, air exhaust slot has Opening directed downwardly, the air that blower extracts are discharged into air exhaust slot by connecting tube, and air can flow out down from the opening of air exhaust slot, so It is extracted by blower, is so recycled again afterwards, be supplemented in come without the air around printing machine, to avoid air-flow in surrounding air A large amount of dust bring into printing machine, and then guarantee printing quality.

Detailed description of the invention

Fig. 1 is the perspective view of the vacuum absorption device of printing machine provided by the invention.

Fig. 2 is the front view of the vacuum absorption device of printing machine provided by the invention.

Fig. 3 is the Section A-A figure in Fig. 2.

Specific embodiment

The present invention provides a kind of vacuum absorption device of printing machine, to make the purpose of the present invention, technical solution and effect more Add clear, clear, the present invention is described in more detail as follows in conjunction with drawings and embodiments.It should be appreciated that described herein Specific examples are only used to explain the present invention, is not intended to limit the present invention.

Please refer to Fig. 1-3, a kind of vacuum absorption device of printing machine provided by the invention, the biography including printing machine is arranged in Vacuum tank 1 below defeated wheel (not having picture in figure), is arranged blower 2 on the vacuum box, and the air exhaust slot 3 above transmission wheel is arranged in, And connect the exhaust outlet of blower and the connecting tube 4 of air exhaust slot；The air exhaust slot 3 is provided with opening 3.1 directed downwardly, the blower It is evacuated from vacuum tank and passes through connecting tube and expel air into air exhaust slot.

When work, blower takes the air in vacuum tank away, generates negative pressure and transmits to which cardboard to be adsorbed in transmission wheel, and The air of extraction can be discharged into air exhaust slot by connecting tube, then be flowed downward out from the opening of air exhaust slot, then be taken out again by blower It takes, so recycles, be supplemented in come without the air around printing machine, to avoid air-flow a large amount of dust band in surrounding air Enter in printing machine, and then guarantees printing quality.As it can be seen that the vacuum absorption device can be such that air circulates in printing machine, The dust for reducing ambient enviroment enters printing machine.

Further, the connecting tube 4 is provided with two, which is separately connected the both ends of air exhaust slot 3, blower 2 can be discharged the air of extraction from two connecting tubes etc. point.If connecting tube, the sky of reflux only is arranged in one end of air exhaust slot Gas can all flow into air exhaust slot from this, then suck vacuum tank, uneven so as to cause the air-flow above cardboard, be unfavorable for cardboard Steady transmission；This is in air exhaust slot both ends setting connecting tube, and flows out the air of reflux partially from air exhaust slot both ends, can The uniformity for greatly improving air-flow, is conducive to the steady transmission of cardboard, and with only one connecting tube the case where compared with, stream The total cross-sectional area in dynamic channel is bigger, and the flow velocity of air will be greatly reduced, smaller to the interference wind of cardboard, further increases paper The stability of plate transmission.

Specifically, the blower 2 is vertically disposed at the center of 1 bottom of vacuum tank, impeller is protruded into vacuum tank, impeller Surface offer air inlet 2.1, there are two partially surrounds the air inlet to the circumferential setting in vacuum tank along air inlet Exhaust outlet 2.2, each exhaust outlet respectively pass through an exhausting duct 2.3 and connect corresponding connecting tube 4.When the wheel rotation of blower, meeting The air of surrounding is partially pushed into exhaust outlet 2.2, this partial air can be flow at connecting tube 4 by exhausting duct 2.3, and true The air of empty van can be supplemented in around impeller from air inlet 2.1, to realize vacuum suction and air-flow equal part.

Preferably, the exhaust outlet 2.2 is scroll casing shape, two exhaust outlet central symmetry distributions.Since exhaust outlet is spiral case Shape, inner flow passage gradually broaden along helix, the dynamic pressure of air-flow can be converted to static pressure, can reduce resistance and noise, To reduce power consumption and improve operating environment.

In the present embodiment, the exhausting duct 2.3 is the tangentially extending beeline channel along exhaust outlet 2.2, can further be dropped Lower resistance and noise.

Specifically, the air exhaust slot 3 is rectangular-shape, (this similar to the sidewall shape is offered on the side wall at both ends Place it is similar refer to it is similar in mathematical meaning) rectangle connector 3.2, the outlet of the connecting tube 4 and 3.2 phase of connector It adapts to, the outlet of connecting tube is connect with the connector.The structure can make air-flow enter air exhaust slot with air curtain shape, make air equably It is flowed out from opening 3.1 again after scattering, can further improve the uniformity of air-flow, reduce the influence for transporting stationarity to cardboard.

In order to further improve the uniformity of air-flow, homogenating plate can be set at the opening 3.1 of the air exhaust slot.? Aerofoil is one block of plate for being evenly distributed exhaust vent, the air of air exhaust slot can equably be flowed out from each exhaust vent.

It, can according to the technique and scheme of the present invention and its hair it is understood that for those of ordinary skills Bright design is subject to equivalent substitution or change, and all these changes or replacement all should belong to protection scope of the present invention.

Claims

1. a vacuum adsorption device of a printing press, it is characterized in that, comprise the vacuum box that is arranged below the transmission wheel of printing press, the fan that is arranged on the vacuum box, is arranged to the exhaust trough above the transmission wheel, and connects the fan. A connecting pipe between the air outlet and the air exhaust slot; the air exhaust slot is provided with a downward opening, and the fan draws air from the vacuum box and discharges the air into the air exhaust slot through the connecting pipe.

2 . The vacuum adsorption device of a printing press according to claim 1 , wherein two connecting pipes are provided, and the two connecting pipes are respectively connected to both ends of the air exhaust slot, and the fan can extract the air from the air outlet. 3 . The two connecting pipes are discharged in equal parts.

3. The vacuum adsorption device of a printing press according to claim 2, wherein the fan is vertically arranged in the center of the bottom of the vacuum box, the impeller extends into the vacuum box, and an air suction port is opened directly above the impeller, In the vacuum box, two air outlets are arranged along the circumferential direction of the air inlet, which equally surround the air inlet, and each air outlet is connected to a corresponding connecting pipe through an air outlet.

4 . The vacuum adsorption device of a printing press according to claim 3 , wherein the air outlet is in a volute shape, and the two air outlets are symmetrically distributed in the center. 5 .

5 . The vacuum suction device of a printing press according to claim 4 , wherein the exhaust duct is a straight channel extending along the tangential direction of the exhaust port. 6 .

6 . The vacuum suction device of a printing press according to claim 2 , wherein the air exhaust groove is in the shape of a rectangular parallelepiped, and the side walls at both ends are provided with rectangular connection openings similar in shape to the side walls. 7 . The outlet of the connecting pipe is adapted to the connecting port, and the outlet of the connecting pipe is connected with the connecting port.

7 . The vacuum adsorption device of a printing press according to claim 6 , wherein an air equalizing plate is arranged at the opening of the air exhaust slot. 8 .