JP4592583B2 - Cable protection guide device for large printers - Google Patents

Description

The present invention relates to a printer that performs large color printing that can output, for example, all A (A1) sizes. More specifically, the present invention relates to an ink tube used for transporting ink in a large printer, transmission of control signals, and the like. The present invention relates to a cable protecting and guiding apparatus for large printers that securely and guides flexible cables such as electric cables used.
In the present specification, the “cables protection guide device for large printers” is simply referred to as “cable protection guide device” as appropriate.

  2. Description of the Related Art Conventionally, this type of cable protection and guide device has a link frame composed of a pair of link plates that are spaced apart from each other on the left and right and a connecting plate that is cross-linked to the bent outer peripheral side and the bent inner peripheral side of the link plate However, it has a configuration in which a large number of the bending radii are connected to each other in the main scanning direction with a certain bending radius.

  When a large printer uses the cable protection guide device as described above, from the viewpoint of making the device compact, the long span specification, that is, the free span of the cable protection guide device capability diagram (see FIG. 12) Longer strokes are required. The free span can be lengthened by increasing the size of the cable protection guide device. However, in this case, not only the vibration of the polygonal motion is increased, but also the drive motor must be used with a high output. It was.

  On the other hand, when the cable protection guide device is used by folding it back in the main scanning direction in order to lengthen the stroke, the cable protection guide device that is folded and located on the upper side hangs down due to gravity, and the bent inner peripheral side is the lower side. There is a concern that noise may be generated or worn due to direct contact with the bent inner peripheral side of the cable protection guide device located in the position.

For such problems, there are known cable protection guide devices such as a shoe attached to the bent inner periphery of the cable protection guide device, a roller, and a supporting guide provided on the large printer side. ing.
In this specification, the width direction of paper fed to a large printer is appropriately referred to as “main scanning direction” (see, for example, Patent Documents 1 to 3).
JP 2005-59214 A Japanese Patent No. 3670964 Japanese Patent Publication No.58-18312

  However, in the conventional technique for attaching the above-described shoe, a special shape and structure for attaching the shoe 310 is structurally required as shown in FIG. 9, and a general-purpose cable protection guide device must be used. It was impossible and cost was high. Further, in the prior art in which the roller 410 is attached, the roller is integrated with the cables protection guide device 400 as shown in FIG.

  Further, in the conventional technology in which the guide for supporting the large printer is provided on the large printer side, as shown in FIG. 11, the impact and vibration cannot be absorbed when the cable protection guide device and the guide come into contact with each other. There is a concern that the ink that is transmitted and dropped on the recording paper becomes turbid, and adversely affects the print quality.

  Further, since the weight of the cable protection guide device is applied to the moving end, a high output drive source is required, and vibration is generated accordingly. In particular, a large inkjet color printer ejects ink from an ink head, but the position of the hitting point is required to have an accuracy of ± 0.025 mm, and vibration during operation tends to affect the print quality. Therefore, it is required to make it difficult for impact, vibration, and the like to be transmitted to the ink head. In addition, as the size of the printer increases, it is necessary to lengthen the stroke of the cable protection guide device. For this reason, the cable protection guide device itself needs to be enlarged in order to increase the rigidity of the cable protection guide device. Furthermore, since large inkjet color printers are used in offices and offices, they are required to reduce noise and to be able to easily replace ink tubes during maintenance. Furthermore, it is an important subject that the cable protection guide device itself is easily formed.

  In FIG. 11, symbol F is a free span, symbol G is a guide, symbol H is the height of the moving end mounting surface, symbol K is a margin length, symbol R is a bending radius, Symbol S indicates a stroke.

  Therefore, the object of the present invention is to increase the free span without increasing the size of the cable protection guide device, and to use a general-purpose cable protection guide device, so that impact, vibration, etc. are not easily transmitted to the moving end. At the same time, it is to provide a cable protection guide device for a large printer with a light maintenance burden.

  According to the first aspect of the present invention, a link frame comprising a pair of link plates that are spaced apart from each other on the left and right and a connecting plate that is cross-linked to the bent outer peripheral side and the bent inner peripheral side of the link plate, In a large-sized printer cable protection guide device in which a large number of bending radii are constrained in the scanning direction and are connected to each other, the two or more adjacent connecting plates on the inner side of the bending can be attached and detached by a plurality of claw members. By having a roller base to be mounted and a roller that is detachably supported by the roller base, the above-described problems are solved.

  In addition to the configuration of the invention according to claim 1, the invention according to claim 2 further solves the above problem by the fact that the connecting plate on the bent outer peripheral side is detachable from the link frame. To solve.

  Furthermore, in the invention according to claim 3, in addition to the configuration of the invention according to claim 1 or 2, the connecting plate on the bent inner peripheral side is integrally formed with the link plate, The above-described problems are further solved.

  In the invention according to claim 4, in addition to the structure of the invention according to claims 1 to 3, any one of the roller bases is mounted on the two or more adjacent connecting plates. The above-described problem is further solved by providing a gap between the connecting plate and the connecting plate.

  According to the first aspect of the present invention, there is provided a link frame including a pair of link plates spaced apart from each other on the left and right sides and a connecting plate that is bridged on the bent outer peripheral side and the bent inner peripheral side of the link plate. In a large-sized printer cable protection guide device in which a large number of flexing radii are regulated in the main scanning direction to a certain level or more, two or more adjacent coupling plates on the bent inner peripheral side are attached and detached by a plurality of claw members By having a roller base that can be gripped and a roller that is detachably supported by the roller base, the cable protection guide device is in rolling contact with the guide installed in the large printer instead of sliding contact, It is possible to suppress the transmission of impact and vibration to the ink head fixed to the moving end of the cable protection guide device as much as possible. Further, since the roller base is attached to the cable protection guide device, the entire device is made compact. Furthermore, since the cable protection guide device and the guide supporting the cable are not in direct contact with each other, the wear resistance and durability of the cable protection guide device and the guide are improved. In addition, since the roller base can be removed with a single touch, the cable protection and guide device can be laid very easily.

  According to the second aspect of the present invention, in addition to the effect of the first aspect of the invention, the bent outer peripheral side connecting plate is detachable from the link frame, so that an ink tube or an electric Easy installation and replacement of cables.

  According to the invention of claim 3, in addition to the effect produced by the invention of claim 1 or claim 2, the connecting plate on the bent inner peripheral side is formed integrally with the link plate. A link frame that is easy to assemble and strong can be constructed. Further, it is possible to prevent the connecting plate from being detached together when the roller base is detached.

  According to the fourth aspect of the present invention, in addition to the effects produced by the first to third aspects of the invention, either one of the roller bases is mounted on the two adjacent connecting plates. By providing a gap between the two connecting plates, even if the distance between the connecting plates and the bending radius R change when the cables protection guide device is bent, it is possible to sufficiently cope with it and to obtain stable operating characteristics.

  In addition, according to the present invention, even an existing cable protection guide device can be applied as long as the mold (pitch, width, bending radius R, etc. of the connecting plate) is the same.

  The best mode for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic view of a large-sized printer loaded with the cable protection and guide device of the present invention. FIG. 2 is a perspective view showing an assembled view of a roller base which is a main part of the present invention, and FIG. 3 is a perspective view showing a state where FIG. 3 is assembled. FIG. 4 is a perspective view showing a state when the cable protection guide device is bent with the roller base attached. FIG. 5 is a view showing a roller base which is a main part of the present invention, FIG. 5 (c) is a plan view thereof, and FIG. 5 (b) is cut along line BB in FIG. 5 (c). FIG. 5 (a) is a side view of FIG. 5 (c). 6A is a cross-sectional view taken along the line AA in FIG. 5A, and FIG. 6B is an enlarged view of a portion B in FIG. 6A. FIG. 7A is a plan view when FIG. 5A is viewed from the direction of ← E, and FIG. 7B is an enlarged view of a portion D of FIG. 7A. FIG. 8 is a schematic configuration explanatory diagram showing an example when the roller base which is the main part of the present invention is mounted on a large printer.

  FIG. 1 is an external view of a large-sized printer 200 loaded with the cable protection and guide device of the present invention. Printers have various product lengths, and small objects range from about 300 mm to 5 m. Therefore, small printers can be handled by reducing the number of roller bases and rollers, and large printers can be handled by increasing the number of roller bases and rollers using the same type of cable protection guide device. ing. Similarly, the guide supporting the cable protection guide device can be handled by changing the setting position and length assuming that the length of the cable protection guide device is changed. Therefore, by using the cable protection guide device of the present invention when manufacturing a large printer, it is possible to obtain a product with a high degree of design freedom and high cost effectiveness.

  2 and 3 are views showing a roller base which is a main part of the present invention. FIG. 2 is a perspective view showing an assembly view thereof, and FIG. 3 is a perspective view showing an assembled state. The roller base 120 is integrally formed of polyacetal resin, which is one of engineering plastics having excellent slidability, mechanical properties (strength, etc.), abrasion resistance, chemical resistance, and heat resistance. The thickness of the roller base 120 in the present invention is 1 to 2 mm, and the structure is as simple and small as possible. As shown in FIG. 5, the roller base 120 has four outer claw bodies 122 and four inner claw bodies 124 that grip two adjacent connecting plates 110 of the cable protection guide device 100. .

  In addition, although the material which comprises the link frame body which consists of a link plate and a connection board is not specifically limited, It is preferable to shape | mold using the glass fiber reinforced polyamide-type resin which can exhibit the outstanding intensity | strength characteristic.

  When the eight nail bodies 122 and 124 are pushed into the two connecting plates 110 adjacent to each other in the cables protection guide device 100, the taper portion 122a of the nail body as shown in an enlarged view in FIG. Is pushed and the nail body spreads naturally. When further pushed, the connecting plate 110 passes through the tapered portions 122a and 124a of the claw bodies 122 and 124, so that the inner claw body 122 and the outer claw body 124 return to their original shapes by elastic force, and the installation is completed.

  In FIG. 5C, the gaps “PR” and “PL” between the claws correspond to the width of the connecting plate 110 on the bent side of the cables protection guide device 100, and “P” The dimensions correspond to the pitch. These dimensions are determined so that they can be attached to the existing cable protection guide device 100. Further, as shown in FIG. 6, a pin bearing 126 for supporting the roller 130 is provided so as to face the surface opposite to the surface on which the inner claw body 122 and the outer claw body 124 extend. Since this pin bearing 126 has a tapered portion 126a at its tip as described in detail in FIG. 6B, the roller 130 can be detachably held. The roller 130 is, for example, one having an outer diameter of φ8, and the material is urethane rubber having excellent elasticity. In use, since no load is applied to the pin bearing 126 in the direction in which the roller 130 is pulled out, the design dimensions are designed with an emphasis on ease of insertion during mounting.

  FIG. 7A is a plan view when FIG. 5A is viewed from the direction of ← E, and FIG. 7B is an enlarged view of a portion D of FIG. 7A. As shown in FIG. 7A, the distances “PL” and “PR” between the outer claw body 122 and the inner claw body 124 facing each other are the dimensions of the connecting plate 110 on the bent inner side of the cable protection guide device 100. However, the width of PL is slightly larger (1 mm in this embodiment) than the width of PR. As a result, even when the cable protection guide device 100 is bent, even if the distance between the connecting plates 110 and the bending radius R change, it can sufficiently cope with it, and stable operation characteristics can be obtained. As a result, even if the cables protection guide device is extended as shown in FIG. 3 or the cables protection guide device is bent as shown in FIG. 4, the roller base does not fall off. It has a structure.

  FIG. 8 is a schematic configuration explanatory view showing an example when the cable protection guide device 100 of the present invention is mounted on the large printer 200. The large-sized printer 200 has a fixed base member 212 that extends in the main scanning direction, and holds the fixed base member 212 at both left and right ends of the fixed base member 212 and is arranged so as to be orthogonal to the fixed base member 212. The fixed side members 214L and 214R are provided. And it has five ink cartridges 216 loaded in the fixed side member 214R, and five ink tubes 240 (242, 243, 244, 245, 246) extended from each of these ink cartridges 216. ing.

  Further, these ink tubes 240 are inserted through the inside of the cable protection guide device 100 of the present invention together with the electric cables (241, 247) connected to the two ultraviolet lamps used for fixing the ink, and the protection guide. Then, it is connected to the ink head 250 installed at the moving end of the cables protection guide device 100.

  On the bent inner peripheral side of the cable protection guide device 100, a roller base 120 that supports the above-described removable roller 130 is mounted at an appropriate interval. That is, when the cable protection guide device 100 is long, the number of rollers 130 is increased. In FIG. 8, a member denoted by reference numeral 222 is a metal guide that supports the cable protection guide device 100 from drooping on the moving end side of the cable protection guide device 100. It is important to install the guide 222 at a point where the cable protection guide device 100 hangs down. By doing so, the cable protection guide device 100 is prevented from being bent by gravity, and the drive source The load can be reduced.

  Further, a cushion material 223 is affixed to the surface of the guide 222 so that vibration due to the roller running is not transmitted to the ink head 250. Further, by attaching the cushion material 223 to the surface where the bent outer peripheral side of the cable protection guide device 100 contacts on the fixed base member 212 side, the cable protection guide device 100 and the fixed base member 212 slide, and the cables The protective guide device 100 is prevented from being worn out or generating subtle vibrations. In the above embodiment, the roller base is fixed at two adjacent connection plates. However, the connection base and the roller base are fixed by attaching the roller base to three or four adjacent connection plates. The force applied to the nail body can be dispersed.

  In the present invention, its use is limited for large printers, but it can also be diverted to office equipment supplies that use cable protection guide devices with a long span, such as large scanners and large copiers. Needless to say.

It is a general-view figure of the large sized printer with which the cable protection guide apparatus of this invention is loaded. It is an assembly drawing of the roller base which is the principal part of this invention. It is a perspective view which shows the external appearance with which the roller base which is the principal part of this invention was mounted | worn with the cables protection guide apparatus extended on the straight line. It is a perspective view which shows the external appearance with which the roller base which is the principal part of this invention was mounted | worn with the cables protection guide apparatus in a bending state. It is drawing which shows the roller base which is the principal part of this invention, FIG.5 (c) is the top view, FIG.5 (b) is a cross section when cut | disconnected by the BB line of FIG.5 (c) 5 (a) is a side view of FIG. 5 (c). 6A is a cross-sectional view taken along the line AA in FIG. 5A, and FIG. 6B is an enlarged view of a portion B in FIG. 6A. FIG. 7A is a plan view when viewed from the direction of ← E in FIG. 5A, and FIG. 7B is an enlarged view of a portion D in FIG. 7A. It is a schematic configuration explanatory view showing an example when a roller base which is a main part of the present invention is mounted on a large printer. It is a perspective view which shows the example of the conventional cables protection guide apparatus. It is a perspective view which shows another example of the conventional cables protection guide apparatus. It is a perspective view which shows another example of the conventional cables protection guide apparatus. It is a capability diagram of the cables protection guide apparatus of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Cable protection guide apparatus 110 of this invention ... Connection plate 112 ... Link plate 120 ... Roller base 122 ... Claw body (outside)
122a ... Tapered part (outside)
124 ... nail body (inside)
124a ... Tapered part (inner side)
126 ... Pin bearing 126a ... Tapered portion 130 (of pin bearing 126) ... Roller 200 ... Large printer 212 ... Fixed base member 214L, 214R ... Fixed side members (left side, right side) )
216 ... Ink cartridge 222 ... Guide 223 ... Cushion material 240 ... Cables 241, 247 ... Electric cables 242-246 ... Ink tube 250 ... Ink head F ... Free Span G ・ ・ ・ Guide H ・ ・ ・ Height K of moving end mounting surface ・ ・ ・ Margin length R ・ ・ ・ Bending radius S ・ ・ ・ Stroke

Claims (4)

A link frame composed of a pair of link plates spaced apart on the left and right and a connecting plate that is bridged on the bent outer peripheral side and the bent inner peripheral side of the link plate has a bend radius greater than a certain value in the main scanning direction. In the cable protection guide device for large printers that are connected in a regulated manner,
A large-scale comprising a roller base that is detachably attached to two or more adjacent connecting plates on the bent inner peripheral side by a plurality of claw members, and a roller that is detachably supported by the roller base. Printer cable protection guide device. The cable protecting and guiding device for a large printer according to claim 1, wherein the connecting plate on the outer peripheral side of the bent is detachable from the link frame. The cable protecting and guiding device for a large printer according to claim 1 or 2, wherein the connecting plate on the bent inner peripheral side is formed integrally with the link plate. The large size according to claim 1, wherein the roller base has a gap between one of the connecting plates and the claw member in a state where the roller base is mounted on the two connecting plates. Printer cable protection guide device.

Images