JP6790738B2 - Drying equipment, printing equipment - Google Patents

Description

The present invention relates to a drying device and a printing device.

As a printing device for printing by applying a liquid to roll paper, continuous paper, strip-shaped continuum (web), etc., there is a printing device provided with a drying device to promote the drying of the applied liquid.

For example, a drying chamber having a drying heat source and drying while running the web, a detection means for detecting web slack and / or breakage installed in the drying chamber and outside, and opening and closing the web entrance and exit of the drying chamber. There is a web drying device including a closing means and an operating means for closing the closing means based on a signal from the detecting means (Patent Document 1).

Japanese Unexamined Patent Publication No. 08-285456

When a drying chamber (drying space) in which conveyed members such as roll paper, continuous paper, and a web are conveyed and a heating means for heating the members conveyed in the drying chamber are provided, the members conveyed in the drying chamber. Is not without the possibility of catching fire. If a member to be transported ignites, it is necessary to prevent the spread of fire to the outside of the drying chamber.

As disclosed in Patent Document 1, in the configuration in which the sagging or breaking of the web is detected by the detecting means and the closing operation is performed, the fire cannot be extinguished when the detecting means breaks down, and the fire spreads reliably. May not be blocked.

The present invention has been made in view of the above problems, and an object of the present invention is to surely prevent the spread of fire to the outside of the drying chamber with a simple configuration.

In order to solve the above problems, the drying apparatus according to claim 1 of the present invention is
A drying chamber in which the members to be transported are transported, and
A heating means for heating the transported member in the drying chamber, and
A normally closed shutter member that opens and closes at least one of the outlet side and inlet side openings of the drying chamber is provided.
The shutter member is in contact with the web and
The shutter member is provided so as to be displaced to an open position where the opening is opened when the web is conveyed in contact with the shutter member.

According to the present invention, it is possible to more reliably prevent the spread of fire to the outside of the drying chamber with a simple configuration.

It is a schematic explanatory drawing of an example of the printing apparatus which concerns on this invention. It is a schematic explanatory drawing of the direction along the transport direction of the drying apparatus which concerns on 1st Embodiment of this invention. Similarly, it is a side explanatory view of FIG. Similarly, it is an enlarged schematic explanatory view of the main part on the exit side. It is an enlarged schematic explanatory view of the main part of the outlet side part which is also used for explanation of operation. It is an enlarged schematic explanatory view of the main part of the outlet side part of the drying apparatus which concerns on 2nd Embodiment of this invention. It is a schematic explanatory drawing of the drying apparatus which concerns on 3rd Embodiment of this invention. It is an enlarged schematic explanatory view of the main part of the outlet side part of the drying apparatus which concerns on 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. First, an example of the printing apparatus according to the present invention will be described with reference to FIG. FIG. 1 is a schematic explanatory view of the device.

This printing device is an inkjet recording device, and is a liquid applying unit including a liquid ejection head 111 which is a liquid applying means for ejecting and applying ink which is a liquid of a required color to a continuous paper 110 which is a conveyed member. Has 101.

In the liquid application unit 101, for example, full-line heads 111 for four colors are arranged from the upstream side in the transport direction of the continuous paper 110, and black K, cyan C, magenta M, and yellow Y are arranged with respect to the continuous paper 110. Apply the liquid. The types and numbers of colors are not limited to this.

The continuous paper 110 is unwound from the original winding roller 102, and is conveyed (moved) by the conveying roller 112 toward the liquid applying portion 101.

The continuous paper 110 to which the liquid is applied by the liquid application unit 101 is sent by the discharge roller 114 via the drying unit 104 including the drying device according to the present invention, and is wound up by the winding roller 105.

Next, the details of the drying portion 104 will be described.

The drying unit 104 contacts one or more (five here) heating rollers 11 (11A to 11E) of the continuous paper 110 in contact with the surface of the continuous paper 110 opposite to the surface to which the liquid is applied. And a heating drum 12 having a diameter larger than that of the heating roller 11 are arranged along the conveying direction.

In addition, one or a plurality (three in this case) of guide rollers 13 (13A to 13C) for guiding the continuous paper 110 that has passed through the liquid applying portion 101 to the heating rollers 11A are provided. Further, it is provided with one or a plurality (here, five) of guide rollers 14 (14A to 14E) that guide the continuous paper 110 that has passed through the heating drum 12 to the discharge rollers 114 in the subsequent stage.

The drying device 120 (120A to 120F) according to the present invention for drying the continuous paper 110 as a web to which a liquid is applied and conveyed between the guide rollers 13A to 13C and between the heating rollers 11A to 11D. Are arranged respectively.

Next, the drying apparatus according to the first embodiment of the present invention will be described with reference to FIGS. 2 to 5. FIG. 2 is a schematic explanatory view of the direction along the transport direction of the drying device, FIG. 3 is a side explanatory view of FIG. 2, FIG. 4 is an enlarged schematic explanatory view of a main part on the outlet side, and FIG. It is an enlarged schematic explanatory view of the main part of the outlet side part to be provided for.

The drying device 120 is a radiant drying device, and is a heating means for heating the drying chamber 123 in which the continuous paper 110 is conveyed in the housing (enclosure) 121 and the continuous paper 110 conveyed in the drying chamber 123. It is provided with one or more infrared heaters 122 as.

Further, in the housing 121, a normally closed shutter member that opens and closes the opening 124A on the outlet side and the opening 124B on the entrance side of the drying chamber 123 (when the two are not distinguished, it is referred to as "opening 124"). 125 and 125 are arranged respectively.

The shutter member 125 is displaced on the housing 121 side between a closed position where the opening 124 is closed (the position shown by the solid line in FIG. 4) and an open position where the opening 124 is opened (the position shown by the broken line in FIG. 4). It is held in the recess 126.

A compression spring 127, which is a means for urging the shutter member 125, is arranged at a closed position (in the direction of the solid line arrow in FIG. 4) that closes the opening 124. As a result, the shutter member 125 becomes a normally closed shutter, and when it is displaced to the open position, it is displaced in the direction of the broken line arrow against the urging force of the compression spring 127 in FIG.

Here, the shutter member 125 is arranged so as to be in contact with the continuous paper 110 which is conveyed through the drying chamber 123.

The shutter member 125 is provided so as to be displaced to an open position where the opening 124 is opened when the continuous paper 110 is conveyed in contact with the shutter member 125. Specifically, when the continuous paper 110 is conveyed in contact with the shutter member 125, the sliding force of the continuous paper 110 is applied to the shutter member 125, and a part of this sliding force is attached to the compression spring 127. It acts as a force to push the shutter member 125 against the force, and the shutter member 125 is displaced to the open position (displacement in the direction of the broken line arrow in FIG. 4).

At this time, the compression spring 127 is arranged so that the urging direction is inclined and intersects with the conveying direction of the continuous paper 110. As a result, when the continuous paper 110 is conveyed in contact with the shutter member 125, the shutter member 125 is displaced to the open position as compared with the case where the urging direction of the compression spring 127 is perpendicular to the conveying direction. It will be easier.

Further, when the transport of the continuous book paper 110 in contact with the shutter member 125 is stopped, the force on the shutter member 125 is not generated from the continuous book paper 110, so that the urging force of the compression spring 127, which is a means for urging the shutter member 125. Displaces the opening 124 to the closed position (displaces in the direction of the solid arrow in FIG. 4).

The shutter member 125 is preferably a metal member in order to ensure the prevention of fire spread. By using a metal member, the heat of the ignited continuous paper 110 can be absorbed.

Further, since the shutter member 125 is conveyed in contact with the continuous paper 110, it is preferable that the shutter member 125 has a curved surface (curvature) so that the continuous paper 110 is not damaged by the shutter member 110. In this case, when the shutter member 125 rotates, the direction of the force acting on the continuous paper 110 becomes the rotation direction and may not be displaced. Therefore, a roller (roller) that does not rotate or a plate-shaped member having a curved surface is used. Is preferable.

With this configuration, when the continuous paper 110 is being conveyed, as shown in FIG. 5A, the shutter member 125 is displaced to the open position where the opening 124 is opened, so that the continuous paper 110 is The printed surface is conveyed without contacting the inner wall surface of the housing 121.

On the other hand, when the transport of the continuous paper 110 is stopped, as shown in FIG. 5B, the shutter member 125 is displaced to the closed position where the opening 124 is closed by the urging force of the compression spring 127 (normally closed). Return to position).

As a result, when a situation such as ignition of the continuous paper 110 occurs in the housing 121 of the radiant drying device 120, the continuous paper 110 is stopped, so that the opening 124 is closed by the shutter member 125. Therefore, it is surely prevented from spreading the fire to the outside of the housing 121 (outside the device: outside the drying room).

The housing 121 can be opened and closed as a whole above the drying chamber 123 to which the infrared heater 122 is attached, and the drying chamber 123 can be opened, so that the continuous paper 110 can be easily set.

Next, the drying apparatus according to the second embodiment of the present invention will be described with reference to FIG. FIG. 6 is an enlarged schematic explanatory view of a main part of the outlet side portion of the drying device. Although the outlet side portion is shown in FIG. 6, the inlet side portion can be configured in the same manner.

A shaft 128 is attached to the housing 121 at an angle (direction intersecting the continuous paper transport direction from the counter direction). A holding member 129 that holds the shutter member 125 is movably attached to the shaft 128. A compression spring 127 is arranged between the housing 121 and the holding member 129.

As the holding member 129, parts such as a hollow collar and a washer are used, but the present invention is not limited to this.

Next, the drying apparatus according to the third embodiment of the present invention will be described with reference to FIG. 7. FIG. 7 is a schematic explanatory view of the drying device.

In the present embodiment, a plurality of (three in this case) shutter members 125 are arranged along the conveying direction of the continuous paper 110.

As a result, the spread of fire can be prevented more reliably.

Next, the drying apparatus according to the fourth embodiment of the present invention will be described with reference to FIG. FIG. 8 is an enlarged schematic explanatory view of a main part of the outlet side portion of the drying device. Although the outlet side portion is shown in FIG. 8, the inlet side portion can be configured in the same manner.

In the present embodiment, a normally closed shutter member 125 that can open and close the opening 124 and a displaceable contact member 135 that is connected to the shutter member 125 by a connecting member 136 are provided.

The intermediate portion of the connecting member 136 (meaning between the connecting point with the shutter member 125 and the connecting point of the contact member 135, not the center) is rotatably supported by the support member 137 on the shaft 138. Then, the connecting member 136 between the shutter member 125 and the contact member 135 can swing in the opposite direction with the shaft 138 as a fulcrum.

The connecting member 136 and the support member 137 are located outside the transport region of the continuous paper 110 in the width direction orthogonal to the transport direction of the continuous paper 110.

Here, the moment on the shutter member 125 side of the fulcrum (shaft 138) by the support member 137 is made larger than the moment on the contact member 135 side of the fulcrum. For example, by making the weight of the shutter member 125 heavier than the weight of the contact member 135, and making the length from the fulcrum to the shutter member 125 longer than the length from the fulcrum to the contact member 135, from the fulcrum by the support member 137. The moment on the shutter member 125 side can be made larger than the moment on the contact member 135 side than the fulcrum.

Therefore, as shown in FIG. 8A, when the continuous paper 110 is conveyed in contact with the contact member 135, a force for pushing down the contact member 135 is applied, and the moment on the shutter member 125 side of the fulcrum is applied. However, when the moment on the contact member 135 side becomes larger than the fulcrum, the shutter member 135 is displaced to the position where the opening 124A is opened.

Further, when the transport of the continuous paper 110 is stopped, the moment on the shutter member 125 side of the fulcrum becomes larger than the moment on the contact member 135 side of the fulcrum, and as shown in FIG. 8B, the shutter The member 125 closes the opening 124A. That is, when the pushing force from the continuous paper 110 is not applied, the shutter member 125 is always in a closed state (normally closed state).

Thereby, as in the above-described embodiment, it is possible to prevent the spread of fire to the outside of the drying chamber.

In each of the above embodiments, the example in which the member to be conveyed is a continuous paper is described, but the present invention is not limited to this, and the member is not particularly limited as long as it is a member to be dried by the drying apparatus according to the present invention. For example, in addition to continuous paper, roll paper, a continuous body such as a web, and a recording medium (printed matter) such as a long sheet material, a printed matter such as a wallpaper, a sheet for an electronic circuit board such as a prepreg may be used.

In addition to recording images such as characters and figures with liquids such as ink, the members transported by the printing device are ink with meaningless images such as patterns for the purpose of decoration and decoration. It may be given with a liquid such as.

In the present application, the liquid to be applied is not particularly limited, but is preferably one having a viscosity of 30 mPa · s or less at room temperature, under normal pressure, or by heating or cooling. More specifically, solvents such as water and organic solvents, colorants such as dyes and pigments, polymerizable compounds, resins, functionalizing materials such as surfactants, biocompatible materials such as DNA, amino acids and proteins, and calcium. , Solvents, suspensions, emulsions, etc. containing edible materials such as natural dyes, etc., for example, inks for inkjets, surface treatment liquids, constituents of electronic elements and light emitting elements, and formation of electronic circuit resist patterns. It can be used for applications such as liquids for three-dimensional modeling.

When a liquid discharge head is used as a liquid applying means, a piezoelectric actuator (laminated piezoelectric element and thin film piezoelectric element), a thermal actuator using an electric heat conversion element such as a heat generating resistor, and vibration are used as an energy generation source for discharging the liquid. Those using an electrostatic actuator composed of a plate and a counter electrode are included.

Note that printing in the present application has the same meaning as image formation, recording, printing, printing, and the like.

101 Liquid application part 104 Drying part 110 Continuously printed paper (member to be transported)
120 Radiant drying device (drying device)
121 Housing 122 Infrared heater (heating means)
123 Drying room (drying space)
124, 124A, 124B Opening 125 Shutter member 135 Contact member

Claims (7)

A drying chamber in which the members to be transported are transported, and
A heating means for heating the transported member in the drying chamber, and
A normally closed shutter member that opens and closes at least one of the outlet side and inlet side openings of the drying chamber is provided.
The shutter member is in contact with the conveyed member and
The drying device is characterized in that the shutter member is provided so as to be displaced to an open position where the opening is opened when the conveyed member is conveyed in contact with the shutter member. A means for urging the shutter member toward the closed position is provided.
The drying apparatus according to claim 1, wherein the urging direction with respect to the shutter member is a direction in which the members to be transported are inclined and intersect with each other. The drying apparatus according to claim 1 or 2, wherein a plurality of the shutter members are arranged along the conveying direction of the conveyed member. The drying apparatus according to any one of claims 1 to 3, wherein the shutter member is a member whose surface in contact with the conveyed member is a curved surface and is arranged in a non-rotating state. A drying chamber in which the members to be transported are transported, and
A heating means for heating the transported member in the drying chamber,
A normally closed shutter member capable of opening and closing at least one of the outlet side and inlet side openings of the drying chamber.
A contact member that is connected to the shutter member and can be displaced together with the shutter member.
The contact member is in contact with the conveyed member and
The drying device is characterized in that the contact member is provided so as to displace the shutter member at a position where the opening is opened when the conveyed member is conveyed in contact with the contact member. .. The shutter member and the contact member are connected by a connecting member and can swing in opposite directions.
The drying apparatus according to claim 5, wherein when the conveyed member is stopped, the shutter member is displaced to a position where the opening is closed. A liquid applying means for applying a liquid to a member to be conveyed,
A printing apparatus comprising the drying apparatus according to any one of claims 1 to 6.

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