JP5172273B2 - Marking apparatus and marking method - Google Patents

Description

  The present invention relates to a marking device and a marking method, and more particularly to a printing technique for marking a surface of a covered electric wire.

As a marking device and a marking method for marking an electric wire covering portion, there are known a method for marking an electric wire covering portion with a marking roller to which ink is attached, and a method for marking by discharging ink from a nozzle tip. (For example, refer to Patent Document 1 and Patent Document 2).
Japanese Utility Model Publication No. 7-25517 JP-A-10-31918

  However, in the marking devices and methods as described in Patent Document 1 and Patent Document 2, if the marking exceeding a predetermined length (width dimension) is applied in the circumferential direction of the electric wire, the amount of ink increases, so In some cases, the mark may become unclear due to splashing or ink scattering. In addition, when the ink supply amount is increased in this way, there is a problem that the time until the ink dries becomes longer and the processing time required for marking becomes longer.

  Accordingly, an object of the present invention is to provide a marking device and a marking method capable of improving the sharpness of a mark by marking and reducing the processing time required for marking.

  The marking device according to the present invention applies a mark having a predetermined length in the circumferential direction of the covered electric wire to the covered portion of the covered electric wire transferred in the longitudinal direction, each of which is in the longitudinal direction of the covered electric wire. Provided with a plurality of marking portions provided on the covering portion with a mark that is provided at a required interval and is less than a predetermined length in the circumferential direction, and the predetermined length in the circumferential direction by a plurality of marks provided by the plurality of marking portions A mark having a thickness is formed.

  In the marking device according to the present invention, the required interval is a distance at which a mark provided by a specific marking unit is dried before being transferred to the nearest marking unit provided on the transfer direction side of the specific marking unit. Preferably there is.

  In the marking device according to the present invention, it is preferable that the circumferential length of the mark applied by each marking portion is 0.3 mm or more and 1.5 mm or less.

  In the marking device according to the present invention, it is preferable that the marking unit includes a marking roller.

  The marking method of the present invention is a method of applying a mark having a predetermined length in the circumferential direction of the covered electric wire to the covered portion of the covered electric wire transferred in the longitudinal direction, the predetermined length in the circumferential direction. A plurality of marking steps for sequentially applying a mark that is less than the number on the covering portion, and the marks having the predetermined length in the circumferential direction are formed by the plurality of marks applied in the plurality of marking steps. .

  According to the marking device of the present invention, each of the covered electric wires has a plurality of marking portions that are provided at a predetermined interval in the longitudinal direction of the covered electric wire and apply a mark that is less than a predetermined length in the circumferential direction to the covered portion. In this case, marks having a length less than a predetermined length are sequentially provided in the circumferential direction, and it is difficult for marks to bleed or the like when marking is performed by each marking portion. In addition, since the mark having the predetermined length in the circumferential direction is formed by a plurality of marks, even if the mark having the predetermined length in the circumferential direction is finally formed, marking is performed by each marking portion. Since the mark is less likely to cause bleeding, the final mark can also be less likely to cause bleeding. Therefore, the clearness of the mark by marking can be improved.

  Moreover, the required space | interval between a specific marking part and the nearest marking part is a distance which dries before the mark given by the specific marking part is transferred to the nearest marking part. For this reason, the mark given by a specific marking part will dry and reach the nearest marking part, and the undried mark will be transferred to the nearest marking part and the mark will become unclear Can be prevented.

  The length of the mark in the circumferential direction is not less than 0.3 mm and not more than 1.5 mm. Here, if the length in the circumferential direction is less than 0.3 mm, the amount of ink is not sufficient, and the mark tends to blur. If the length in the circumferential direction exceeds 1.5 mm, the mark tends to blur. For this reason, the clearness of the mark by marking can be improved more reliably by setting the length in the circumferential direction of the mark to be not less than 0.3 mm and not more than 1.5 mm.

  In addition, according to the marking method of the present invention, since it has a plurality of marking steps for sequentially applying a mark that is less than a predetermined length in the circumferential direction to the covered portion, the covered electric wire has less than the predetermined length in the circumferential direction. Marks are sequentially applied, and when marking is performed by each marking portion, it is difficult for the marks to bleed or the like. In addition, since the mark having the predetermined length in the circumferential direction is formed by a plurality of marks, even if the mark having the predetermined length in the circumferential direction is finally formed, marking is performed by each marking portion. Since the mark is less likely to cause bleeding, the final mark can also be less likely to cause bleeding. Therefore, the clearness of the mark by marking can be improved.

  Hereinafter, details of a marking device according to an embodiment of the present invention will be described with reference to the drawings. Prior to the description of the marking device, an electric wire manufacturing apparatus incorporating the marking device according to the present invention will be briefly described.

(Wire production equipment)
FIG. 1 is a configuration diagram showing an electric wire manufacturing apparatus including a marking device 80 according to an embodiment of the present invention. As shown in FIG. 1, the wire manufacturing apparatus 1 includes a wire drawing machine 10, a first colorant blending device 20, an insulator extruder 30, a first cooling water tank 40, and a second colorant blending device 50. The protective layer extruder 60, the second cooling water tank 70, the marking device 80, the bundling machine 90, the packaging machine 100, and the bundling machine 110 are generally configured. As shown in FIG. 1, the electric wire manufacturing apparatus 1 manufactures a covered electric wire 125 such as a VVF cable that covers the periphery of the core wire with an insulating endothelium 122 and further covers the periphery of the insulating endothelium 122 with a protective layer 123.

  The wire drawing machine 10 produces the core wire 121 by extending the steel wire 120 to have a predetermined diameter. The first colorant blending device 20 blends a colorant that colors the insulating endothelium 122 that covers the core wire 121. The insulator extruder 30 colors the insulator with the colorant blended by the first colorant blending device 20, and covers the periphery of the core wire 121 with the insulator to form the insulation jacket 122. The first cooling water tank 40 is for cooling the insulating endothelium 122.

  The second colorant blending device 50 blends a colorant that colors the protective layer (covering part) 123 that covers the periphery of the insulating endothelium 122. The protective layer extruder 60 colors the insulator with the colorant blended by the second colorant blending device 50 and covers the periphery of the insulating endothelium 122 with the insulator to form the protective layer 123. The second cooling water tank 70 is for cooling the protective layer 123. The covered electric wire 125 is manufactured by the electric wire manufacturing apparatus 1 having such a configuration.

  The marking device 80 marks the protective layer 123 of the covered electric wire 125 that is transported in the longitudinal direction. The bundler 90 winds up the covered electric wires 125 marked by the marking device 80 so as to form a bundle. The packaging machine 100 wraps the wire bundle bundled by the bundling machine 90 with packaging paper. The bundle stacker 110 sorts and loads the packaged wire bundles according to the type of the wires.

  FIG. 2 is a configuration diagram illustrating an example of an electric wire manufactured by the electric wire manufacturing apparatus 1 illustrated in FIG. 1, (a) illustrating an example, and (b) illustrating another example. As shown to Fig.2 (a), the electric wire manufactured by the electric wire manufacturing apparatus 1 which concerns on this Embodiment is a VVF cable. Specifically, the steel wire 120 is drawn by the wire drawing machine 10 to produce the core wire 121, and the insulating endothelium 122 is formed around the core wire 121 by the insulator extruder 30. Thereafter, the protective layer 123 is formed around the insulating endothelium 122 by the protective layer extruder 60, and the VVF cable is manufactured. As shown in FIG. 2B, the electric wire manufacturing apparatus 1 may manufacture an electric wire that covers the core wire 121 with one layer of insulator, such as a VVR cable. Furthermore, the core wire 121 may be a multi-wire or a single wire.

(Marking device)
FIG. 3 is an enlarged view showing the marking device 80 shown in FIG. 1 and its surroundings. As shown in FIG. 3, the covered electric wire 125 cooled by the second cooling water tank 70 is marked by the first marking portion 81 and the second marking portion 82. 1 and 2, there are two marking portions 81 and 82, but they may be composed of three or more.

  FIG. 4 is a configuration diagram illustrating details of the first marking unit 81 illustrated in FIG. 3. Since the first marking portion 81 and the second marking portion 82 shown in FIG. 4 have substantially the same configuration, only the first marking portion 81 will be described, and the description of the second marking portion 82 will be omitted. As shown in FIG. 4, the first marking unit 81 includes an ink supply tank 81a, an ink supply passage 81b, an ink discharge passage 81c, an ink tank 81d, a flat plate 81e, a marking roller 81f, and an ink amount adjustment spatula. 81g and electric wire holding rollers 81h and 81i.

  The ink supply tank 81 a stores ink for marking the protective layer 123 of the covered electric wire 125. The ink supply tank 81a has a circulation function and is configured to send the stored ink to the ink tank 81d via the ink supply passage 81b. Further, the ink in the ink tank 81d returns to the ink supply tank 81a through the ink discharge passage 81c.

  The flat plate 81e has a through-hole corresponding to the shape of the mark to be marked on the protective layer 123, and applies ink to a predetermined portion of the outer peripheral portion of the marking roller 81f so as not to apply ink to other portions except the predetermined portion. To do. The marking roller 81f is for marking the protective layer 123, and is configured to rotate around the rotation axis. The marking roller 81f is configured to transfer the ink applied to the outer peripheral portion to the protective layer 123 via the flat plate 81e.

  FIG. 5 is a top view showing details of the flat plates 81e and 82e of the first marking portion 81 and the second marking portion 82, (a) showing the flat plate 81e of the first marking portion 81, and (b) being the second. The flat plate 82e of the marking part 82 is shown. As shown in FIG. 5A, the flat plate 81e of the first marking portion 81 is a plate material that has a rectangular shape when viewed from above. The flat plate 81e has three elongated through holes 81e1 to 81e3 extending in the electric wire transfer direction. The ink in the ink tank 81d adheres to the outer peripheral portion of the marking roller 81f from these through holes 81e1 to 81e3. For this reason, the ink adheres to the outer peripheral portion of the marking roller 81f so as to draw three lines.

  On the other hand, as shown in FIG. 5 (b), the flat plate 82 e of the second marking portion 82 has a rectangular shape when viewed from the top like the flat plate 81 e of the first marking portion 81. Further, the flat plate 82e of the second marking portion 82 has two long through holes 82e1 and 82e2 extending in the electric wire transfer direction. For this reason, the ink adheres to the outer peripheral portion of the marking roller 82f so as to draw two lines.

  As shown in FIG. 4, the ink amount adjusting spatula 81g removes excess ink when the amount of ink adhering to the outer peripheral portion of the marking roller 81f is large, and is disposed close to the outer peripheral portion of the marking roller 81f. Has been. That is, when excess ink adheres to the rotating marking roller 81f, only the excess ink is removed by hitting the ink amount adjusting spatula 81g. On the other hand, when an excessive amount of ink does not adhere and only an appropriate amount of ink adheres, the appropriate amount of ink does not hit the ink amount adjusting spatula 81g and is not removed.

  The two electric wire holding rollers 81h and 81i are provided on the opposite side (vertically upward side) of the marking roller 81f that sandwiches the covered electric wire 125, and the electric wire floats when marking by the marking roller 81f, so that the marking is insufficient. It is to prevent it from becoming.

  FIG. 6 is a configuration diagram showing the marking rollers 81f and 82f of the first marking portion 81 and the second marking portion 82. FIG. 6A is a side view of both marking rollers 81f and 82f (a surface viewed in parallel with the rotation axis). (B) shows a cross section of the outer periphery of the marking roller 81 f of the first marking portion 81, and (c) shows a cross section of the outer periphery of the marking roller 82 f of the second marking portion 82.

  As shown in FIG. 6A, the marking rollers 81f and 82f include base material portions 81f1 and 82f1 provided on the rotating shaft side, that is, the center side, and an ink supply head provided on the outer peripheral side of the base material portions 81f1 and 82f1. 81f2 and 82f2. The ink supply heads 81f2 and 82f2 are made of an elastic material, and when they abut against the flat plates 81e and 82e, the portions corresponding to the through holes 81e1 to 81e3, 82e1 and 81e2 bite into the through holes 81e1 to 81e3, 82e1 and 81e2. It has become. By this bite, ink adheres to the ink supply heads 81f2 and 82f2 in accordance with the shapes of the through holes 81e1 to 81e3, 82e1 and 81e2.

  Further, as shown in FIG. 6B, the marking roller 81f of the first marking portion 81 has recesses a to c on the outer peripheral surface. The recesses a to c correspond to the through holes 81e1 to 81e3, and ink adheres to the recesses a to c. Similarly, as shown in FIG. 6C, the marking roller 82f of the second marking portion 82 has concave portions d and e on the outer peripheral surface. The recesses d and e correspond to the through holes 82e1 and 82e2, and the ink adheres to the recesses d and e.

  Next, with reference to FIG. 7, the marking method by the marking apparatus 80 which concerns on this Embodiment is demonstrated. FIG. 7 is a schematic view showing a marking method by the marking device 80 shown in FIG. During the operation of the marking device 80, ink is adhered to the outer periphery of the marking roller 81f of the first marking unit 81 so as to draw three lines. Similarly, ink is adhered to the outer periphery of the marking roller 82f of the second marking portion 82 so as to draw two lines.

  Then, the covered electric wire 125 covered with the protective layer 123 is supplied to the first marking unit 81 of the marking device 80. As a result, the three lines attached to the ink supply head 81 f 2 of the first marking portion 81 are transferred to the protective layer 123. Thereby, the three linear marks 131 to 133 are marked on the protective layer 123. Here, the three linear marks 131 to 133 applied by the marking roller 81 f of the first marking portion 81 are lines each having a width of 0.3 mm or more and 1.5 mm or less in the circumferential direction of the covered electric wire 125. ing. Here, if the length in the circumferential direction of the mark is less than 0.3 mm, the mark tends to be faint due to insufficient ink amount, and if the length in the circumferential direction of the mark exceeds 1.5 mm, the mark is blurred. It tends to be easier. For this reason, by setting the three linear marks 131 to 133 to 0.3 mm or more and 1.5 mm or less in the circumferential direction, blurring or the like is suppressed and a clear mark is obtained.

  Next, the covered electric wire 125 is supplied to the second marking unit 82. As a result, the two lines attached to the ink supply head 82 f 2 of the second marking portion 82 are transferred to the protective layer 123. Thereby, the two linear marks 134 and 135 are marked on the protective layer 123. Here, the two linear marks 134 and 135 provided by the marking roller 82f of the second marking portion 82 are lines each having a width of 0.3 mm or more and 1.5 mm or less in the circumferential direction of the covered electric wire 125. ing. For this reason, the two linear marks 134 and 135 are also suppressed by blurring and the like and become clear marks.

  Moreover, as shown in FIG. 7, in the marking device 80 according to the present embodiment, a wide line shape having a length (predetermined length) exceeding 1.5 mm in the circumferential direction by the five linear marks 131 to 135. A mark 130 is formed. Here, if a wide line mark having a length exceeding 1.5 mm in the circumferential direction is marked by one marking roller, bleeding or the like is likely to occur. However, in this embodiment, the two marking rollers 81f and 82f The linear marks 131 to 135 having a width of 1.5 mm or less are drawn, thereby forming the wide linear marks 130. For this reason, it is difficult to cause bleeding or the like during marking by the marking rollers 81f and 82f, and the occurrence of bleeding or the like is also suppressed in the final wide linear mark 130, thereby improving the sharpness of the mark. I have to.

The marking roller 82f of the second marking part 82 is separated from the marking roller 81f of the first marking part 81 by a required distance in the electric wire longitudinal direction. This required distance is such that the mark made by the marking roller 81f (specific marking roller) of the first marking unit 81 is provided on the second marking unit 82 provided on the transfer direction side of the marking roller 81f of the first marking unit 81. This is the distance to dry before being transferred to the marking roller 82f (nearest marking roller). For this reason, the mark applied by the marking roller 81f of the first marking portion 81 reaches the marking roller 82f of the second marking portion 82 without being dried, and is transferred to the marking roller 82f of the second marking portion 82. The situation can be prevented. Furthermore, in the present embodiment, since the mark marked by the marking roller 81f of the first marking portion 81 is a thin line of 0.3 mm or more and 1.5 mm or less in the circumferential direction, the required distance is compared quickly. Can be shortened.

(First modification of marking device)
Next, a first modification of the marking device 80 according to the present embodiment will be described. 8A and 8B are cross-sectional views of the outer periphery of the marking rollers 81f and 82f of the marking device 80 according to the first modification. FIG. 8A shows the marking roller 81f of the first marking portion 81, and FIG. 8B shows the second marking. The marking roller 82f of the part 82 is shown. As shown in FIGS. 8A and 8B, the ink supply heads 81f2 and 82f2 may have convex portions f to j instead of the concave portions a to e. Also by this, as shown in FIG. 7, the five linear marks 131-135 can be marked and the wide linear mark 130 can be formed, and the clearness of a mark can be improved.

(Second modification of marking device)
Next, a second modification of the marking device 80 according to the present embodiment will be described. FIG. 9 is a schematic diagram illustrating a marking method according to a second modification. In the example shown in FIG. 7, long linear marks 131 to 135 extending in the transfer direction of the covered electric wire 125 are marked. On the other hand, in the second modified example, as shown in FIG. 9, dotted marks 141 a to 141 c, 142 a to 142 c, 143 a to 143 c, 144 a to 144 c, and 145 a to 145 e are obtained by cutting long linear marks 131 to 135. , 146a to 146e are marked intermittently. Then, wide dot marks 145 and 146 are formed by these to improve the sharpness of the mark.

  In the example shown in FIG. 7, the linear marks 131 to 135 may partially overlap the adjacent linear marks 131 to 135, or may not overlap with no gap. Moreover, the dot-shaped marks 141a to 141c, 142a to 142c, 143a to 143c, 144a to 144c, 145a to 145e, and 146a to 146e shown in FIG. 9 may or may not overlap.

  In this way, according to the marking device 80 and the marking method according to the present embodiment, the covered electric wire 125 is sequentially provided with marks that are less than a predetermined length in the circumferential direction, and each marking roller 81f, In the case of marking by 82f, the blurring of the mark or the like hardly occurs. Further, since a mark having a predetermined length in the circumferential direction is formed by a plurality of marks, even if a mark having a predetermined length in the circumferential direction is finally formed, marking is performed by the respective marking rollers 81f and 82f. Since the marks to be generated are less likely to cause bleeding, the final marks can also be less likely to generate bleeding. Therefore, the clearness of the mark by marking can be improved.

  The required distance between the marking roller 81f of the first marking unit 81 and the marking roller 82f of the second marking unit 82 is such that the mark applied by the marking roller 81f of the first marking unit 81 is the second marking unit. The distance is dry before being transferred to the marking roller 82f. For this reason, the mark applied by the marking roller 81 f of the first marking portion 81 is dried and reaches the marking roller 82 f of the second marking portion 82, and the undried mark is marked on the second marking portion 82. It is possible to prevent a situation in which the mark is unclear when transferred to the roller 82f.

  The length of the mark in the circumferential direction is not less than 0.3 mm and not more than 1.5 mm. Here, if the length in the circumferential direction is less than 0.3 mm, the amount of ink is not sufficient, and the mark tends to blur. If the length in the circumferential direction exceeds 1.5 mm, the mark tends to blur. For this reason, the clearness of the mark by marking can be improved more reliably by setting the length in the circumferential direction of the mark to be not less than 0.3 mm and not more than 1.5 mm.

(Other embodiments)
As described above, the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment, and modifications may be made without departing from the gist of the present invention. For example, in the above embodiment, an example in which the wide line mark 130 and the wide dot marks 145 and 146 are finally formed has been described. However, the shape of the mark is not limited to these, and a star shape, a rhombus, or the like Another mark may be sufficient and a character may be sufficient.

  In the above embodiment, an example of marking with two marking rollers 81f and 82f has been described. However, the present invention is not limited to this, and marking may be performed with three or more marking rollers to form a final mark. . In the case of marking with three or more marking rollers, it is desirable that the interval between the marking rollers is a distance that allows a mark marked by each marking roller to dry before reaching the next marking roller. This is because the situation where the ink is transferred to the next marking roller can be prevented.

  In the above embodiment, the marking roller is used, but an ink jet type marking unit may be applied.

  In the above embodiment, a clear mark is formed by setting the length in the electric wire circumferential direction of a plurality of marks constituting one mark to 0.3 mm or more and 1.5 mm or less. Of course, the dimensions may be appropriately changed according to the standard of the covered electric wire.

  In the above embodiment, the electric wire provided with the protective layer 123 on the outer periphery of the insulating endothelium 122 such as VVR has been described as an example. However, the electric wire is not limited to this, and the electric wire only covers the core wire 121 such as VVR with one layer of insulator. Also good. Further, the electric wire may be a single-core electric wire or a multi-core electric wire.

  In the above embodiment, the cooling water tank is not provided in the subsequent stage of the marking device 80, but a third cooling water tank may be further provided in order to dry and fix the ink.

  In the above embodiment, each of the marking rollers 81f and 82f performs marking only from the vertically lower side of the electric wire. However, the marking roller 81f and 82f may perform marking from the side or vertically upward. In addition, when marking is performed only from the vertically lower side, the ink attached to the electric wire is difficult to spread in the circumferential direction of the electric wire, which is advantageous in that it is possible to further prevent bleeding.

  In the above embodiment, a dark mark may be marked using a plurality of marking rollers 81f and 82f. That is, after marking is performed by the first marking roller 81f, the same portion may be marked with the same color by the second marking roller 82f to mark a dark color mark.

  In the said embodiment, although it was set as the structure which incorporated the marking apparatus 80 which concerns on this invention in the electric wire manufacturing apparatus 1 as an example, it is not limited to this, A marking apparatus is not necessarily used by incorporating in an electric wire manufacturing apparatus. Of course.

It is a lineblock diagram showing an electric wire manufacturing device containing a marking device concerning an embodiment of the invention. It is a block diagram which shows an example of the electric wire manufactured with the electric wire manufacturing apparatus shown in FIG. 1, (a) shows an example and (b) has shown the other example. It is an enlarged view which shows the marking apparatus shown in FIG. 1, and its periphery. It is a block diagram which shows the detail of the 1st marking part shown in FIG. It is a top view which shows the detail of the flat plate of a 1st marking part and a 2nd marking part, (a) shows the flat plate of a 1st marking part, (b) has shown the flat plate of the 2nd marking part. It is a block diagram which shows the marking roller of a 1st marking part and a 2nd marking part, (a) shows the side surface (surface seen in parallel with the rotating shaft) of both marking rollers, (b) is a 1st marking part. The outer periphery part cross section of this marking roller is shown, (c) has shown the outer peripheral part cross section of the marking roller of the 2nd marking part. A marking method by the marking device according to the present embodiment will be described. It is sectional drawing of the outer peripheral part of the marking roller of the marking device concerning a modification, (a) shows the marking roller of the 1st marking part, and (b) shows the marking roller of the 2nd marking part. It is the schematic which shows the marking method which concerns on a 2nd modification.

Explanation of symbols

80 Marking Device 81 First Marking Part 82 Second Marking Part 81f Marking Roller 120 Steel Wire 121 Core Wire 122 Insulating Endothelial 123 Protective Layer 125 Covered Electric Wire 130 Wide Line Marks 131 to 135 Line Marks 145 and 146 Wide Point Marks 141a to 141c, 142a-142c, 143a-143c, 144a-144c, 145a-145e, 146a-146e Point mark

Claims (5)

A marking device for applying a mark having a predetermined length in the circumferential direction of the covered electric wire to the covered portion of the covered electric wire transferred in the longitudinal direction,
A plurality of marking portions, each of which is arranged at a predetermined interval in the longitudinal direction of the covered electric wire, each of which supplies ink to the surface of the covered electric wire and applies a mark on the covering portion that is less than the predetermined length in the circumferential direction With
A marking device, wherein the mark having the predetermined length in the circumferential direction is formed by a plurality of marks applied by the plurality of marking portions.   The required interval is a distance that allows ink supplied by a specific marking unit to dry before being transferred to the nearest marking unit provided on the transfer direction side of the specific marking unit. Item 2. The marking device according to Item 1.   The marking device according to claim 1 or 2, wherein a length in a circumferential direction of the mark applied by each marking portion is 0.3 mm or more and 1.5 mm or less.   The marking device according to claim 1, wherein the marking unit includes a marking roller. A marking method for applying a mark having a predetermined length in the circumferential direction of the covered electric wire to the covered portion of the covered electric wire transferred in the longitudinal direction,
A plurality of marking steps for sequentially applying a mark that is less than the predetermined length in the circumferential direction to the covering portion;
A marking method comprising: forming a mark having the predetermined length in the circumferential direction by a plurality of marks applied in the plurality of marking steps.

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