JP7559403B2 - Conveyor device, coating device, printing device, device - Google Patents

Description

The present invention relates to a conveying device, a coating device, a printing device, and a device.

In a device for transporting sheet material, when a sheet material jam occurs inside the device, there is a device that ejects the sheet material remaining inside the device that is not jammed into a tray section for purging.

Conventionally, there are known devices that have multiple purge destinations on the top surface of the device, and convey sheet material to the purge destination specified by the user (Patent Document 1).

JP 2017-19172 A

However, the configuration disclosed in Patent Document 1 has the problem that the configuration for removing the sheet material remaining in the transport path becomes large.

The present invention was made in consideration of the above problems, and aims to make it possible to easily remove sheet material remaining in the conveying path.

In order to solve the above problems, the conveying device according to the present invention comprises:
A tray portion for receiving the sheet material is provided on the upper surface of the device body,
A conveying path along which the sheet material is conveyed is disposed below the tray portion,
the tray portion and an upper guide member constituting the transport path are movable together;
The tray portion and the upper guide member are moved together to open the transport path ,
a tray unit in which the tray portion and the upper guide member are integrated,
the tray unit is movable up and down on the front side with the rear side as a pivot point;
a rear frame of the device is disposed behind the tray unit;
A gap is provided between the rear surface of the tray unit and the rear frame,
When the front side of the tray unit is lifted, a step is formed between the front side and the rear side frame.
The composition was as follows.

According to the present invention, sheet material remaining in the transport path can be easily removed.

1 is a schematic explanatory diagram of a printing apparatus according to a first embodiment of the present invention. 1 is a side view illustrating a coating apparatus including a conveying device according to a first embodiment of the present invention. FIG. 2 is an external perspective view of the coating device. FIG. 2 is a perspective view illustrating the operation of the coating device. FIG. 2 is an external perspective view of a coating device according to a first comparative example; FIG. FIG. 5 is an explanatory diagram of an apparatus according to a second embodiment of the present invention. FIG. FIG. 13 is a perspective view of the tray unit when it is open. FIG. 11 is an explanatory diagram of a conveying device according to a third embodiment of the present invention. FIG. 13 is an external perspective view of a coating device according to a fourth embodiment of the present invention. FIG. FIG. 13 is an explanatory diagram of a coating device according to a fifth embodiment of the present invention. FIG. FIG. 11 is an explanatory diagram of Comparative Example 2.

Embodiments of the present invention will now be described with reference to the accompanying drawings. A printing device according to a first embodiment of the present invention will now be described with reference to FIG. 1. FIG. 1 is a schematic diagram of the printing device.

The printing device 1 includes an input section 10 for inputting the sheet material P, a pre-processing section 20, a printing section 30, a drying section 40, an output section 50, and an inversion mechanism section 60. The pre-processing section 20 is composed of a coating device according to the present invention, including a conveying device according to the present invention.

In the printing device 1, the sheet material P is carried in (supplied) from the carrying-in section 10, and the pre-treatment section 20, which is a pre-treatment means, applies (coats) a pre-treatment liquid as necessary, the printing section 30 applies the liquid to perform the required printing, the drying section 40 dries the liquid adhering to the sheet material P, and then the sheet material P is discharged to the carrying-out section 50.

The loading section 10 includes an input tray 11 (lower input tray 11A, upper input tray 11B) that stores multiple sheet materials P, and a feeding device 12 (12A, 12B) that separates and sends out the sheet materials P one by one from the input tray 11, and supplies the sheet materials P to the pre-processing section 20.

The pre-treatment unit 20 includes a coating unit 201 as a coating means for applying (applying) a treatment liquid (coating liquid) that has the effect of, for example, agglomerating the ink coloring material and preventing show-through to the printing surface of the sheet material P.

The printing unit 30 includes a drum 31, which is a support member (rotating body) that supports the sheet material P on its circumferential surface and rotates, and a liquid ejection unit 32 that ejects liquid toward the sheet material P supported by the drum 31.

The printing section 30 also includes a transfer cylinder 34 that receives the sheet material P sent from the pre-processing section 20 and transfers the sheet material P between the drum 31, and a transfer cylinder 35 that receives the sheet material P transported by the drum 31 and transfers it to the drying section 40.

The sheet material P transported from the pre-processing section 20 to the printing section 30 has its leading edge gripped by a gripping means (sheet gripper) provided on the transfer cylinder 34, and is transported as the transfer cylinder 34 rotates. The sheet material P transported by the transfer cylinder 34 is transferred to the drum 31 at a position opposite the drum 31.

A gripping means (sheet gripper) is also provided on the surface of the drum 31, and the leading edge of the sheet material P is gripped by the gripping means (sheet gripper). A number of suction holes are formed in a distributed manner on the surface of the drum 31, and the suction means generates a suction airflow that flows inward from the required suction holes of the drum 31.

Then, the sheet material P transferred from the transfer cylinder 34 to the drum 31 has its leading edge gripped by the sheet gripper, is adsorbed and supported on the drum 31 by the suction airflow from the suction means, and is transported as the drum 31 rotates.

The liquid ejection section 32 is equipped with ejection units 33 (33A to 33D) which are liquid ejection means. For example, ejection unit 33A ejects cyan (C) liquid, ejection unit 33B ejects magenta (M) liquid, ejection unit 33C ejects yellow (Y) liquid, and ejection unit 33D ejects black (K) liquid. In addition, ejection units that eject special liquids such as white and gold (silver) can also be used.

The ejection unit 33 is, for example, a full-line type head in which multiple liquid ejection heads (hereinafter simply referred to as "heads") 100, each having multiple nozzle rows in which multiple nozzles 104 are arranged, are arranged in a staggered pattern on a base member 331, as shown in FIG. 2.

The ejection operation of each ejection unit 33 of the liquid ejection section 32 is controlled by a drive signal corresponding to the printing information. When the sheet material P supported on the drum 31 passes through the area facing the liquid ejection section 32, liquid of each color is ejected from the ejection unit 33, and an image corresponding to the printing information is printed.

The drying section 40 dries the liquid that has been applied to the sheet material P by the printing section 30. This causes the water content in the liquid and other liquid components to evaporate, the colorant contained in the liquid to be fixed on the sheet material P, and curling of the sheet material P is suppressed.

The reversing mechanism 60 is a mechanism that reverses the sheet material P using a switchback method when performing double-sided printing on the sheet material P that has passed through the drying section 40, and the reversed sheet material P is sent back upstream of the transfer cylinder 34 through the conveying path 61 of the printing section 30.

The discharge section 50 is equipped with a discharge tray 51 on which multiple sheet materials P are stacked. The sheet materials P transported from the drying section 40 via the reversing mechanism section 60 are stacked and held in order on the discharge tray 51.

In this embodiment, the printing means is described as having a liquid ejection means, but the invention can also be applied to printing devices that use means other than liquid ejection, such as electrophotographic printing.

Next, a coating device including a conveying device according to the first embodiment of the present invention will be described with reference to FIG. 2. FIG. 2 is a side view of the coating device that constitutes the coating unit of a printing device.

The coating device 200 includes a coating section 201 as a coating means for applying a treatment liquid 211 to the sheet material P, an upstream transport path 202, a downstream transport path 203, a reverse transport path 204, and a straight transport path 205.

The coating unit 201 includes a treatment liquid storage tank (supply pan) 212 that contains treatment liquid 211, a pumping roller 213 that pumps up the treatment liquid 211, and a coating roller 214 that applies the treatment liquid 211 to the sheet material P. The coating unit 201 also includes a pressure roller 215 that faces the coating roller 214.

In this application section 201, the pumping roller 213 pumps up the treatment liquid 211 and forms a liquid film on the peripheral surface of the application roller 214. Then, the sheet material P transported by the upstream transport roller pair 223 and the downstream transport roller pair 231 passes through the nip between the application roller 214 and the pressure roller 215, thereby applying the treatment liquid 211 to the sheet material P.

The upstream conveying path 202 is a path that conveys the sheet material P sent to the coating device 200 toward the coating section 201. On the upstream conveying path 202, multiple conveying roller pairs 221 and multiple conveying roller pairs 222 that convey the sheet material P are arranged, and the sheet material P is sent to the upstream conveying roller pair 223 just before the coating section 201.

The downstream transport path 203 is a path for transporting the sheet material P onto which the treatment liquid 211 has been applied in the coating unit 201 toward the downstream printing unit 30. On the downstream transport path 203, there are arranged a plurality of roller pairs 232 for transporting the sheet material P sent out from the downstream transport roller pair 231 immediately after the coating unit 201, and a plurality of transport roller pairs 233 for transporting the sheet material P to the lower device (the printing unit 30 in this embodiment).

When applying the treatment liquid 211 to both sides of the sheet material P, the reverse conveying path 204 receives the sheet material P, which has been applied with the treatment liquid 211 on one side, from the middle of the downstream conveying path 203 via the branch claw 206. The reverse conveying path 204 then reverses the sheet material P and sends it again toward the upstream conveying roller pair 223.

The reverse transport path 204 is provided with multiple transport roller pairs 241, multiple transport rollers 242, and a discharge roller pair 243 for purging.

The straight conveying path 205 is a path that does not apply the treatment liquid 211 to the sheet material P sent from the loading section 10 in the coating section 201, but instead joins the downstream conveying path 203. When the coating section 201 is capable of not applying the treatment liquid 211, it is also possible to configure the sheet material P to be conveyed from the upstream conveying path 202 through the downstream conveying path 203 without providing a separate straight conveying path 205.

Detection means 280 (some reference numbers omitted) for detecting the sheet material P are disposed on the upstream conveying path 202, the entrance and exit sides of the coating section 201, the downstream conveying path 203, the reverse conveying path 204, near the discharge rollers 243, etc.

When these detection means 280 detect that sheet material P is stuck at a predetermined timing or that sheet material P has not arrived, it is determined that a jam of sheet material P has occurred.

Next, the configuration related to purging in the coating device according to this embodiment will be described with reference to FIG. 3. FIG. 3 is an explanatory perspective view of the exterior of the coating device.

A tray section 251 for receiving sheet material P is provided on the upper surface of the device body (housing) 250 of the coating device 200. The sheet material P to be purged, for example, is discharged from the discharge roller 243 through an opening 252 of the device body 250 to the tray section 251. The tray section 251 can also be configured to discharge a portion of the sheet material P when reversing.

Below the tray section 251, a part of the transport path 202a that constitutes the upstream transport path 202 described above is arranged. This transport path 202a is composed of multiple transport roller pairs 221. The transport roller pairs 221 are composed of an upper roller 221a that is an upper guide member and a lower roller 221b that is a lower guide member.

Here, the tray section 251 and each upper roller 221a of the pair of transport rollers 221, which are the upper guide members of the lower transport path 202a, are configured as an integrated tray unit 260.

Note that in Figure 3, the upper roller 221a is shown as being visible from the front of the tray unit 260, but this is for the purpose of explanation, and the upper roller 221a is housed within the tray unit 260.

The tray unit 260 is supported on the rear side relative to the device body 250, and is movable upward on the front side. Here, the rear side of the tray unit 260 is supported on the device body 250 so that it can rotate.

In addition, a damper 261 is interposed between the tray unit 260 and the device body 250 as a means for keeping the tray unit 260 open.

A left front door 271 and a right front door 272 are provided on the front surface of the device body 250 so as to be able to open and close. A display panel 273 is provided on the left front door 271.

Next, the operation of the coating device 200 will be described with reference to FIG. 4. FIG. 4 is an oblique view of the coating device used to explain the operation.

When a jam of sheet material P occurs on the conveying path 202a of the coating device 200, the control unit of the coating device 200, for example, controls the sheet material P on the conveying path 202a to stop as it is, and the sheet material P in other positions (sheet material P that has passed through the coating unit 201) to be discharged together onto the tray unit 251, as shown in FIG. 3.

The control unit then notifies the user of the occurrence of the jam via a display panel 273 or the like provided on the left front door 271 of the coating device 200.

At this time, as shown in FIG. 4A, the user can remove the sheet material P discharged onto the tray section 251, and then lift and rotate (move) the front side of the tray unit 260 in the direction of arrow A to open the conveying path 202a. This allows the sheet material P stopped in the conveying path 202a to be removed and the jam to be cleared.

In this way, the transport path 202a below the tray section 251 can be opened simply by rotating (moving) the tray unit 260 (a member that integrates the tray section 251 and the upper roller 221a), making it easy to clear jams.

In addition, in this embodiment, after a jam occurs, all the sheet material P is collected in the tray section 251 and the conveying path 202a directly below, and the jam can be removed simply by rotating the tray section 251 (tray unit 260). This makes it easy to remove the sheet material P.

Comparative Example 1 will now be described with reference to Figures 5 and 6. Figure 5 is an explanatory perspective view of the exterior of the coating device according to Comparative Example 1, and Figure 6 is an explanatory perspective view of the same.

In this comparative example 1, the lower roller 221b of the conveying path 202a below the tray section 251 is movable in the direction of arrow B as unit 290.

As a result, when a jam occurs, the conveying path 202a can be opened by lowering the front side of the unit 290 downward (in the direction of arrow B) from the state shown in FIG. 6(a) to the state shown in FIG. 6(b).

In this configuration, it is necessary to secure space 291 below the transport path 202a in which to move the unit 290, which increases the size of the device and reduces visibility within the transport path 202a.

In contrast, in this embodiment, as shown in FIG. 4(b), there is no need to secure unnecessary space below the transport path 202a, and size can be prevented from increasing. Also, as shown in FIG. 4(a), the tray unit 260 moves upward, improving visibility of the open transport path 202a.

Next, a second embodiment of the present invention will be described with reference to Figs. 7 to 9. Fig. 7 is an explanatory diagram of the device according to the second embodiment, Fig. 8 is an explanatory perspective view of the same, and Fig. 9 is an explanatory perspective view of the tray unit in an open state.

The device 800 of this embodiment is composed of the coating device 200 (pre-treatment device 20) described in the first embodiment, and a carry-in device 100 (corresponding to the carry-in section 10), which is an upstream device that sends the sheet material P to the coating device 200.

The coating device 200 is similar to the first embodiment, except that the conveying path 202a has two pairs of conveying rollers 221.

The loading device 100 has an extension tray section 151 that extends the tray section 251 of the coating device 200, and a transport path 102 along which the sheet material P is transported is disposed below the extension tray section 151.

A pair of conveying rollers 121 is arranged on the conveying path 102, and the pair of conveying rollers 121 is composed of an upper roller 121a that serves as an upper guide member and a lower roller 121b that serves as a lower guide member.

The extension tray section 151 and the upper roller 121a of the lower transport path 102 are integrated to form the tray unit 160, which is held in the device body 150 so that it can move (rotate).

This allows the tray unit 160 to be rotated to open the extension tray section 151 and the lower transport path 102.

Because of this configuration, sheet material P that protrudes from the coating device 200 can also be discharged onto the tray section 251 and the extension tray section 151, as shown in Figure 8.

Furthermore, as in the first embodiment, as shown in FIG. 9, jammed sheet material P that remains across the transport path 202a and the transport path 102 can be easily removed.

Next, a third embodiment of the present invention will be described with reference to FIG. 10. FIG. 10 is an explanatory diagram of a conveying device according to the third embodiment.

The conveying device 900 has a tray section 951 that receives the sheet material P on the upper surface of the device body 950. Below the tray section 951, a conveying path 902 that conveys the sheet material P in the direction of the arrow is arranged.

A pair of conveying rollers 921 is arranged on the conveying path 902, and the pair of conveying rollers 921 is composed of an upper roller 921a that serves as an upper guide member and a lower roller 921b that serves as a lower guide member.

The tray section 951 and the upper roller 921a of the lower transport path 902 are integrated to form the tray unit 960, which is held in the device body 950 so as to be movable (rotatable).

It also has a transport path 905 that transports the sheet material P from the transport path 902 to the tray section 951.

As a result, the tray unit 960 can be rotated to open the lower transport path 902, so that the sheet material P remaining in the transport path 902 can be easily removed, as in the first embodiment.

Next, a fourth embodiment of the present invention will be described with reference to Figs. 11 and 12. Fig. 11 is an explanatory perspective view of the exterior of a coating device according to the fourth embodiment, and Fig. 12 is an explanatory view of the same device for explaining its operation.

In this embodiment, the tray unit 260, which is an integrated unit of the tray section and upper guide member, is provided with a front cover 262, which serves as an exterior, on the front side. The front cover 262 is a cover that makes the front side flush with the right front door 272, and also covers the upper roller 221a, etc.

The rear surface 260a of the tray section 251 of the tray unit 260 is provided with a hinge section 263 that rotatably supports the tray unit 260. This allows the front side of the tray unit 260 to move up and down with the hinge section 263 as the pivot point, and the transport path is opened by lifting the front side of the tray unit 260.

A rear frame 275 is disposed on the rear side of the tray unit 260. At this time, a gap 276 is provided between the rear surface 260a of the tray unit 260 and the rear frame 275.

As a result of this configuration, the conveying path 202a can be opened by lifting the front side of the tray unit 260 in the direction of arrow A from the state shown in FIG. 12(a) to the state shown in FIG. 11 and FIG. 12(b) and rotating it around the hinge portion 263 as a fulcrum.

At this time, the tray portion 251 of the tray unit 260 is tilted so that the hinge portion 263 side is downward, as shown in Figures 11 and 12 (b). Therefore, if the sheet material P remains on the tray portion P, the sheet material P will slide toward the rear side.

As shown in FIG. 12(b), the gap 276 allows the rear end of the sliding sheet material P to hit the step 277 between the rear surface 260a of the tray unit 260 and the rear frame 275, preventing the sheet material P from falling.

In this way, even if the sheet material P remains in the tray portion 251 when the tray unit 260 is opened, it can be prevented from falling out of the tray portion 251.

Next, a fifth embodiment of the present invention will be described with reference to Figures 13 and 14. Figure 13 is an explanatory diagram of a coating device according to the fifth embodiment, and Figure 14 is an explanatory diagram for explaining the operation of the same.

In this embodiment, the front cover 262 of the tray unit 260 has an L-shaped cross section and is supported by a hinge portion 264 so that it can move (rotate) vertically between an open position shown by a solid line and a closed position shown by a dashed line.

In addition, an operating handle 265 for releasing/setting the latch is provided as an operating member on the front side of the tray unit 260. Here, the length of the operating handle 265 (the amount of protrusion from the front surface 260b of the tray part 251 of the tray unit 260) is set to a length that is accommodated within the front cover 262 when the front cover 262 is closed.

In this way, by making the front cover 262 openable and closable, the length of the operating handle 265 can be made to fit within the front cover 260, and the length of the operating handle 265 can be shortened.

Here, comparative example 2 will be described with reference to FIG. 15. FIG. 15 is an explanatory diagram of comparative example 2.

In comparative example 2, the front cover 262 is integrated with the tray portion 251.

In this case, the length of the operating handle 265 must be long enough to protrude from the front cover 262. Therefore, in Comparative Example 2, the length of the operating handle 265 is longer than in this embodiment, and as a result, there is a risk that the operating handle 265 will bend and it will become impossible to release/set it.

In addition, in this embodiment, as shown in FIG. 14, when the tray unit 260 is rotated upward to open the transport path 202a, the front cover 262 can also be opened upward. In other words, both the tray unit 260 and the front cover 262 can be moved in the vertical direction.

As a result, in Comparative Example 2, in which the front cover 262 is integrated with the tray unit 260, it is only possible to see up to line of sight b, whereas in this embodiment it is possible to see up to line of sight a, and the transport path 202a can be seen further in. This makes it easier to remove jammed sheet material P.

REFERENCE SIGNS LIST 1 Printing device 10 Carry-in section 20 Pretreatment section 30 Printing section 40 Drying section 50 Carry-out section 31 Drum 32 Liquid application section 100 Carry-in device (upstream device)
102 Conveying path 121a Upper roller (upper guide member)
150 Apparatus body 151 Extension tray section 160 Tray unit 200 Coating device 201 Coating section 202 Upstream conveying path 202a Conveying path 203 Downstream conveying path 204 Reverse conveying path 221 Conveying roller pair 221a Upper roller (upper guide member)
250 Apparatus body 251 Tray section 260 Tray unit 275 Rear side frame 800 Apparatus 900 Conveyor device 902 Conveyor path 950 Apparatus body 951 Tray section 960 Tray unit

Claims (8)

A tray portion for receiving the sheet material is provided on the upper surface of the device body,
A conveying path along which the sheet material is conveyed is disposed below the tray portion,
the tray portion and an upper guide member constituting the transport path are movable together;
The tray portion and the upper guide member are moved together to open the transport path ,
a tray unit in which the tray portion and the upper guide member are integrated,
the tray unit is movable up and down on the front side with the rear side as a pivot point;
a rear frame of the device is disposed behind the tray unit;
A gap is provided between the rear surface of the tray unit and the rear frame,
When the front side of the tray unit is lifted, a step is formed between the front side and the rear side frame.
A conveying device characterized by the above. 2. The conveying device according to claim 1, wherein the tray portion and the upper guide member are rotatable upward. 3. The conveying device according to claim 2, further comprising a means for holding said tray portion and said upper guide member in an upwardly rotated state. A detection means for detecting a jam of the sheet material is provided,
A conveying device as described in any one of claims 1 to 3, characterized in that when a jam is detected by the detection means, the conveying of the sheet material in the conveying path is stopped, and the sheet material downstream of the conveying path is discharged to the tray section. A conveying device according to any one of claims 1 to 4 ,
and a coating means for applying a coating liquid to the sheet material. 7. A printing apparatus comprising : a conveying device according to claim 1; or a coating device according to claim 5 . A tray portion for receiving the sheet material is provided on the upper surface of the device body,
A conveying path along which the sheet material is conveyed is disposed below the tray portion,
the tray portion and an upper guide member constituting the transport path are movable together;
a conveying device in which the conveying path is opened by moving the tray portion and the upper guide member together;
an upstream device that feeds the sheet material into the conveying device,
An apparatus characterized in that an upper surface of the upstream device forms an extension tray portion that extends the tray portion. the upstream device has a conveying path along which the sheet material is conveyed disposed below the extension tray portion;
the extension tray portion and an upper guide member constituting the transport path below the extension tray portion are movable together;
8. The device according to claim 7 , wherein the upper guide member of the extension tray portion is moved to open the transport path below the extension tray portion.

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