JP5116543B2 - Inkjet printing device - Google Patents

Description

  The present invention relates to an ink jet textile printing apparatus.

Conventionally, screen printing apparatuses, roller printing apparatuses, and the like have been widely used as apparatuses for printing on fabrics such as cotton, silk, and polyester. However, these printing apparatuses need to prepare a screen frame, engraving roller, etc. for each pattern, but the screen frame and engraving roller are expensive. There was a problem. On the other hand, the ink-jet textile printing apparatus has the advantage of being suitable for the production of a small quantity and a wide variety of products since it can cope with the change of the design only by changing the digital data, and has been widely used in recent years. In this inkjet printing apparatus, for example, as shown in FIG. 1 of Patent Document 1, conveyance rollers are installed on the upstream side and the downstream side, and a conveyance belt for conveying the fabric is wound around these conveyance rollers. Yes. The fabric transported by this transport belt is printed by the printer unit. In order to ensure the flatness of the fabric during printing, an adhesive layer is formed on the surface of the transport belt, and the fabric is placed on the transport belt by using a sticking roller. Is pasted. When the fabric that has been printed is conveyed to the conveyance roller on the downstream side, the fabric is wound around the winding roller via the feed roller and the intermediate roller.
JP 2004-169248 A

  However, since the above-described ink jet printing apparatus has the fabric adhered on the transport belt, it is necessary to peel the fabric after printing from the transport belt. In this peeling, the cloth is peeled off from the transport belt by the force of winding the cloth of the take-up roller. However, since a large force is applied to the cloth during the peeling, a thin cloth or a knit cloth is used. When used, there has been a problem that the yarns of these finished products are bent or stretched to deteriorate the quality of the product.

  Therefore, an object of the present invention is to provide an inkjet printing apparatus that can perform printing without impairing the quality of a product even if it is a thin fabric or a knit fabric.

  An ink jet printing apparatus according to the present invention has been made to solve the above-mentioned problems, and is an ink jet printing apparatus for printing a printed material, which has an adhesive surface to which the printed material adheres, and has a printed material. An endless belt that conveys the belt from upstream to downstream, an upstream drive roller and a downstream drive roller that drive the endless belt, and a winding roller that is installed downstream of the downstream drive roller and winds up the printed material. And a peeling roller which is installed between the downstream drive roller and the winding roller and is driven to rotate so as to peel the printed material from the endless belt.

  By configuring as described above, the following effects can be obtained. First, a conventional inkjet printing apparatus will be described. When the fabric conveyed to the downstream drive roller is peeled off from the endless belt, the winding roller rotates to wind up the fabric so that the fabric is peeled off from the endless belt. It was. Since the diameter of the take-up roller increases as the fabric is taken up, the take-up roller is installed at a distance from the downstream drive roller to some extent so that the downstream drive roller does not contact the wound fabric. . On the other hand, the ink jet textile printing apparatus according to the present invention has a peeling roller between the downstream drive roller and the winding roller. The peeling roller rotates in synchronization with the progress of the cloth, and the cloth can be peeled from the endless belt by rotating. As described above, since the fabric is peeled from the endless belt by the peeling roller instead of the winding roller, a means for peeling the fabric from the endless belt can be installed in the vicinity of the peeling portion, and the tensile force applied to the fabric is reduced. can do. As a result, printing can be performed without impairing the quality of the thin fabric or the knit fabric.

  The inkjet textile printing apparatus can take various configurations. For example, the inkjet textile printing apparatus further includes a counter roller that is installed so as to contact the downstream drive roller and the peeling roller and transmits the rotation of the downstream drive roller to the peeling roller. Preferably it is. According to this configuration, since the peeling roller can be rotated by using the rotation of the downstream driving roller, it is not necessary to provide a separate driving source for the peeling roller, and thus the size and cost of the ink jet apparatus can be reduced. It becomes.

  The counter roller is preferably in contact with the peeling roller at positions corresponding to both ends of the peeling roller. Usually, the fabric contacts the central portion of the peeling roller and does not contact both ends. For this reason, even if it damages a peeling roller with a counter roller by making a counter roller contact the both ends of a peeling roller, a fabric is not affected.

  The counter roller preferably has a shaft portion that is supported so as not to rotate, and a roller main body portion that is installed so as to rotate around the shaft portion.

  Similarly, it is preferable that the peeling roller also has a shaft portion that is supported so as not to rotate and a roller main body portion that rotates around the shaft portion.

  Further, it is preferable that the roller main body of the peeling roller can be replaced. According to this configuration, the cloth can be more appropriately peeled from the endless belt by using the roller main body portion made of an appropriate material depending on the type of the cloth.

  As is apparent from the above description, according to the present invention, it is possible to provide an ink jet printing apparatus capable of performing printing without impairing the quality of a product even with a thin fabric or a knit fabric. .

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of an ink jet textile printing apparatus according to the invention will be described with reference to the drawings. FIG. 1 is a schematic diagram showing the entire inkjet printing apparatus according to the present embodiment. The right side in FIG. 1 is referred to as “upstream side” and the left side is referred to as “downstream side”, and the printed material is conveyed from right to left in FIG.

  As shown in FIG. 1, an inkjet printing apparatus 1 includes an unwinding roller C1 for unwinding a fabric (printed material), an endless belt 2 that conveys the fabric C, and an upstream drive that intermittently drives the endless belt 2. A roller 3a and a downstream drive roller 3b are provided. Affixing roller 4 for adhering fabric C onto endless belt 2 is installed above upstream drive roller 3a. Further, an inkjet printing unit 6 for printing the fabric C is installed between the upstream drive roller 3a and the downstream drive roller 3b. A peeling roller 7 for peeling the fabric C from the endless belt 2 is installed downstream of the downstream drive roller 3b, and a drying heater plate 8 for drying the fabric C peeled by the peeling roller 7; And the winding roller C2 which winds up the dry cloth C is installed further downstream. In addition, each member which comprises these inkjet textile printing apparatuses 1 is supported by the support frame 9 (refer FIG. 2, 3 etc.).

  Hereinafter, each member which comprises the inkjet textile printing apparatus 1 is demonstrated.

  The endless belt 2 can employ various materials such as metal, rubber, and plastic, and an adhesive surface is formed on the outer surface thereof. This pressure-sensitive adhesive surface can be formed, for example, by applying a pressure-sensitive pressure-sensitive adhesive to the surface of the endless belt 2. Thus, since the adhesive surface is formed on the surface of the endless belt 2, the fabric C is stuck on the endless belt 2 by pressing the fabric C onto the endless belt 2 with a sticking roller 4 described later. Can do.

  The upstream drive roller 3a and the downstream drive roller 3b intermittently rotate counterclockwise in FIG. 1 using a motor (not shown) as a drive source, thereby causing the endless belt 2 to run intermittently in the arrow direction. The upstream drive roller 3a and the downstream drive roller 3b rotate at the same timing and at the same speed.

  The sticking roller 4 is installed on the upstream side of the endless belt 2 and presses the fabric C against the endless belt 2 by its own weight. Since the affixing roller 4 is in contact with the endless belt 2, the endless belt 2 is configured to rotate clockwise as the endless belt 2 travels. The sticking roller 4 includes a shaft portion 41 and a roller main body portion 42. Since the shaft portion 41 is longer than the roller body portion 42, both end portions of the shaft portion 41 protrude from both ends of the roller body portion 42 and extend so as to intersect the support frame 9. The portion where the shaft portion 41 and the support frame 9 intersect will be described in detail. As shown in FIG. 2, a U-shaped cut 91 is formed at the upper end of the support frame 9. 41 intersects. The width of the U-shaped notch 91 is formed to be smaller than the diameter of the shaft portion 41, and a key groove 412 is formed in a portion that intersects the notch 91 of the shaft portion 41. Thus, since the keyway 412 is engaged with the notch 91 of the support frame 9, the shaft portion 41 cannot move in the horizontal direction (the conveyance direction or the width direction of the fabric C) and cannot rotate. It is supported by the support frame 9. Note that the shaft portion 41 is movable in the vertical direction within the cut 91.

  The roller main body portion 42 is attached to the shaft portion 41 via a bearing 43 so as to rotate about the shaft portion 41. The roller main body 42 has a width wider than the width of the fabric C so that the entire fabric C can be pressed. The outer layer of the roller main body 42 is formed of rubber. Therefore, in a state where the sticking roller 4 is placed on the endless belt 2 so that its own weight is applied, the sticking roller 4 is pressed by the endless belt 2 and the roller main body portion. The outer layer of 42 is deformed. The outer layer of the roller body 42 is not particularly limited, but is preferably formed of an elastic material such as rubber. By forming the outer layer of the roller main body portion 42 with the elastic material in this way, the fabric C can be pressed to the endless belt 2 side with a uniform force without damaging the fabric C.

  The inkjet textile printing unit 6 is installed between the upstream drive roller 3a and the downstream drive roller 3b, and has a printer head (not shown) and a head carriage (not shown) on which the printer head is mounted. Yes. When printing on the cloth C, the head carriage scans in the width direction of the cloth C, and while the head carriage scans, ink is ejected from the printer head to print the cloth C.

  FIG. 3 is a rear view showing details on the downstream side of the ink jet printing apparatus 1 according to this embodiment, and FIG. 4 is a side view showing details on the downstream side of the ink jet printing apparatus 1 according to this embodiment. As shown in FIGS. 3 and 4, in order to peel the printed fabric C from the endless belt 2, a peeling roller 7 is installed downstream of the downstream drive roller 3b. The peeling roller 7 has a shaft portion 71 and a roller body portion 72. Since the shaft 71 is longer than the roller body 72, both ends of the shaft 71 protrude from both ends of the roller body 72, and both ends of the protruding shaft 71 are supported by the support frame 9. A roller body 72 is attached to the shaft 71 via a bearing 73 so as to rotate about the shaft 71. The roller main body 72 can be replaced according to the type of the fabric C. For example, various roller main bodies 72 such as silicon rubber, metal, and vinyl chloride are prepared on the surface, and the roller main body 72 is suitable for the fabric C. The roller body 72 can be selected. In addition, it is preferable that this peeling roller 7 is installed in the position close | similar to the part which the fabric C and the endless belt 2 begin to peel, and it is preferable that it is less than 100 mm from the position which starts the said peeling.

  A counter roller 11 is installed between the peeling roller 7 and the downstream drive roller 3b. The counter roller 11 has a shaft portion 111 and two roller main body portions 112. Both ends of the shaft portion 111 are supported by the support frame 9. Two roller body portions 112 are attached to the shaft portion 111 via bearings 113 so as to rotate around the shaft portion 111. The roller body 112 is attached to a position facing both ends of the roller body 102 of the peeling roller 7. Since the counter roller 11 is in contact with the downstream drive roller 3b and the peeling roller 7, first, the counter roller 11 is rotated clockwise in FIG. 4 by the downstream drive roller 3b. Since the counter roller 11 that rotates clockwise is also in contact with the peeling roller 7, the counter roller 11 rotates the peeling roller 7 counterclockwise in FIG. The surface of the roller main body 112 of the counter roller 11 can be formed of urethane rubber, steel, resin, or the like.

  A drying heater plate 8 is installed downstream of the peeling roller 7 so as to dry the fabric C peeled from the endless belt 2 by the peeling roller 7. In order to dry the printed fabric C, the drying heater plate 8 is preferably raised to 100 to 130 degrees. A take-up roller C2 for taking up the dried fabric C is installed downstream of the drying heater plate 8.

  Next, a printing method using the above-described inkjet printing apparatus 1 will be described.

  First, as shown in FIG. 1, the fabric C unwound from the unwinding roller C <b> 1 is passed between the endless belt 2 and the sticking roller 4. As a result, the fabric C is pressed onto the endless belt 2 by the weight of the sticking roller 4 and stuck onto the endless belt 2.

  The fabric C thus affixed on the endless belt 2 is conveyed by the endless belt 2 and printed by the ink jet printing unit 6. Thereafter, the fabric C is conveyed to the downstream drive roller 3 b and is peeled from the endless belt 2 by the peeling roller 7. The peeled fabric C is dried by the drying heater plate 8 and then taken up by the take-up roller C2.

  As described above, according to this embodiment, since the cloth C is peeled from the endless belt 2 by the peeling roller 7, the peeling means can be installed near the portion where the cloth C and the endless belt peel. For this reason, it is possible to reduce the force applied when the fabric C is peeled off, and as a result, it is possible to perform printing without impairing the quality of the thin fabric or the knit fabric.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to these, A various change is possible unless it deviates from the meaning of this invention. For example, in the above-described embodiment, the peeling roller 7 has the shaft portion 71 and the roller main body portion 72 separated from each other, but they can be configured integrally.

  In the above embodiment, the driving source of the peeling roller 7 is the same as the driving source of the downstream driving roller 3b. However, the driving source of the peeling roller 7 is not limited to this. For example, the driving source of the peeling roller 7 is driven downstream. A drive source different from the drive source of the roller 3b can be used. Thereby, it can be set as the rotational speed different from the rotational speed of the downstream drive roller 3b.

  In the above embodiment, the fabric C is dried by the heater plate 8, but the fabric C may be dried by, for example, a hot air generator, or the fabric C is dried by using both of them. You can also.

1 is a schematic view showing an entire embodiment of an inkjet textile printing apparatus according to the present invention. It is the side view (a) and top view (b) which show the detail of the cross | intersection part of the axial part of the sticking roller which concerns on this embodiment, and a support frame. It is a back surface partial sectional view which shows the detail of the downstream of the inkjet textile printing apparatus which concerns on this embodiment. It is a side view which shows the detail of the downstream of the inkjet textile printing apparatus which concerns on this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Inkjet printing apparatus 2 Endless belt 3a Upstream drive roller 3b Downstream drive roller 7 Peeling roller C Fabric (printed article)
C1 Winding roller

Claims (6)

An ink jet printing apparatus for printing an object to be printed,
An endless belt that has an adhesive surface to which the object to be printed is attached and conveys the object to be printed from upstream to downstream;
An upstream drive roller and a downstream drive roller for driving the endless belt;
A winding roller installed on the downstream side of the downstream drive roller, which winds up the printed material;
A peeling roller that is installed between the downstream drive roller and the winding roller, and is rotationally driven so as to peel the printed material from the endless belt;
An inkjet printing apparatus comprising:   The inkjet printing apparatus according to claim 1, further comprising a counter roller that is installed in contact with the downstream drive roller and the peeling roller and transmits the rotation of the downstream drive roller to the peeling roller.   The inkjet printing apparatus according to claim 2, wherein the counter roller is in contact with the peeling roller at a position corresponding to both ends of the peeling roller.   4. The inkjet printing apparatus according to claim 2, wherein the counter roller includes a shaft portion that is non-rotatably supported and a roller main body portion that is installed to rotate about the shaft portion. 5.   5. The inkjet printing apparatus according to claim 1, wherein the peeling roller includes a shaft portion that is non-rotatably supported and a roller main body portion that rotates about the shaft portion.   The ink jet printing apparatus according to claim 5, wherein a roller main body portion of the peeling roller is replaceable.

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