JP2004351711A - Abnormality detection method in hose continuous production line and identification and detection device of the abnormality detection unit - Google Patents

Abstract

An abnormality detection method capable of continuously producing a stable product by removing an abnormal portion in an inspection and finishing process by continuing a hose continuous production line without stopping, and identifying the abnormality detection unit. A detection device is provided.
A hose continuous production line generally includes a step (A) of extruding an inner resin tube onto a mandrel (core), a step of applying an adhesive to the surface of the inner resin tube (B), and a step of pressing an inner rubber tube. Dispensing step (C), braiding the reinforcing layer on the inner surface rubber tube (D), extruding the cover rubber (E), applying an identification mark to an abnormal portion in the hose manufacturing process (F), on the cover rubber (G), a step of heating and vulcanizing the hose coated with the sheath (H), a step of removing the sheath (I), a step of removing the mandrel (J), and an inspection and finishing step (K). ), An identification marker detecting step (L) for detecting an identification marker of an abnormal portion of the hose, a cutting process of the abnormal portion of the hose, and a shipping process (M) are continuously arranged.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for detecting an abnormality in a continuous hose production line and an identification and detection device of the abnormality detection unit, and more particularly, to a cover rubber for a hose after a cover rubber extruding step when an abnormal portion is detected in a continuous hose production line. A hose continuous production line that applies an identification mark to the abnormal part of the surface and continues production without stopping the continuous hose production line, detects abnormal parts near the inspection and finishing processes, and removes abnormal parts. The present invention relates to an abnormality detection method and an identification detection device of the abnormality detection unit.
[0002]
[Prior art]
Conventionally, as a continuous hose production line, for example, as shown in FIG. 4, a step of extruding an inner resin tube on a mandrel (core material) (A), a step of applying an adhesive to the inner resin tube (B), a tube Step (C) of extruding an inner rubber tube provided with an outer diameter measuring device (C1) and a tube unevenness detector (C2), and braiding the reinforcing layer on the inner rubber tube provided with a device (d) for detecting an abnormality in the reinforcing layer. Step (D), Step (E) of extruding a cover rubber provided with an outer diameter measuring device (e), Step (F) of coating a sheath on the cover rubber, Step of heating and vulcanizing (G), Step of removing the sheath ( H), a mandrel removing step (I), an inspection and finishing step (J) provided with an appearance unevenness inspection device (j), a cutting and shipping step (K), and the like are continuously arranged (for example, see Patent Document 1). 1).
[0003]
[Patent Document 1]
JP-A-5-138662 (pages 2 to 5, FIG. 1)
[0004]
[Problems to be solved by the invention]
By the way, in a continuous hose continuous production line, since the purpose is to save labor in principle, no worker is attached to each process or work is performed by a very small number of people. For this reason, with respect to the manufacturing abnormality in each manufacturing process, the abnormality is detected by a detection device separately installed in each manufacturing process, and the operator is made to recognize the abnormality by some kind of abnormality display (for example, a display light or a buzzer). Had become.
[0005]
If a production error occurs, the worker attaches an identification mark, for example, a paper tape or an aluminum tape, or applies paint to the part of the hose that is being manufactured at the location where the abnormality has occurred on the continuous hose production line. In the inspection process, a method of cutting and removing a hose at an abnormal portion has been performed.
[0006]
However, the process of applying the identification mark as described above is all performed before the cover rubber extrusion process, and if the production line is moving at a constant speed and no workers are attached, abnormal locations Is difficult to identify, and there is a high possibility that an abnormal portion that has been detected is missed.
[0007]
Also, even if a paper tape or aluminum tape is applied to an abnormal part of the hose during manufacture, for example, an abnormal part on the reinforcing layer, it can be removed or erased in the subsequent cover rubber extrusion step, sheath coating step, vulcanization step, etc. In addition, there is a problem that abnormal parts cannot be reliably detected by visual inspection of outer diameter or tactile inspection in the inspection process, etc. Was.
[0008]
An apparatus for automatically attaching a tape or the like is also considered, but the apparatus itself becomes large-scale, requires a large amount of cost, requires a large space, and is not practical.
[0009]
This invention pays attention to such a conventional problem, and when an abnormal point is detected in a continuous hose production line, without stopping the continuous hose production line, the abnormal portion of the cover rubber surface is automatically detected immediately after the cover rubber extrusion process. A hose that can continuously produce a stable product that does not contain abnormal parts by applying identification marks and detecting and removing abnormal parts in the inspection and finishing processes by continuing the hose continuous production line without stopping. An object of the present invention is to provide a method of detecting an abnormality in a continuous production line and an identification and detection device of the abnormality detection unit.
[0010]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a method for detecting an abnormality in a continuous hose production line according to the present invention, wherein the continuous hose production line for continuously producing a hose through a plurality of production steps includes: At least in a manufacturing process before the cover rubber extruding step of the hose, when the first abnormality detecting means detects a manufacturing abnormality of the hose, an abnormality detection signal is provided from the time when the first abnormality detecting means is detected at the rear of the cover rubber extruding step. The control means calculates the operation start time by the identification mark providing means from the pulse count number of the abnormality detection signal and the transfer speed of the hose, and based on the control signal from the control means, An identification mark is given to the cover rubber surface at the location corresponding to the abnormal part of the hose by the identification mark assigning means. In the detecting the identification mark of an abnormal portion by the second abnormality detection means, it is an gist to cut off an abnormal portion in the shipping process.
[0011]
A first abnormality detecting means for detecting a production abnormality of a hose is installed in each of a plurality of manufacturing processes of the hose continuous production line, and a control means is provided based on an abnormality detection signal from the first abnormality detection means which has detected the abnormality. Then, an identification mark is applied to the surface of the cover rubber corresponding to the abnormal portion of the hose by the identification mark providing means installed at the rear of the cover rubber extrusion step.
[0012]
In addition, the identification mark applying means is one selected from an identification tape, a paint spray, and a means for providing unevenness on a cover rubber surface, and the abnormality detection means is a non-contact type outer diameter measuring instrument, The identification mark given by the identification mark giving means is continuously detected as an outer diameter abnormality of the hose after the cover extrusion molding.
[0013]
In this way, when an abnormal spot is detected on the hose continuous production line, the identification mark is automatically applied to the abnormal portion of the cover rubber surface immediately after the cover rubber extrusion process without stopping the hose continuous production line, and production is continued By detecting an abnormal portion in the vicinity of the inspection and finishing processes and removing the abnormal portion in the shipping process, a stable product free from product abnormalities can be continuously produced.
[0014]
Further, the identification and detection device in the hose continuous production line according to the present invention is arranged such that a hose cover is provided via the control means based on an abnormality detection signal from the first abnormality detection means in each manufacturing process, after the hose cover rubber extruding step. An identification mark providing means for applying an identification mark to an abnormal portion of the rubber surface is provided, and a second abnormality detecting means for continuously detecting the identification mark of the abnormal portion is provided near a hose inspection and finishing process. It is the gist.
[0015]
Here, the identification mark providing means is one selected from a device for supplying and attaching an identification tape to the surface of the cover rubber of the hose, an ink jet device for applying paint spray, and a flaw for marking and embossing the surface of the cover rubber. .
[0016]
Further, the marking device is constituted by a rotatable guide roll and a marking roll having an uneven surface, and at least one of the guide roll and the marking roll operates to clamp the hose, and the hose cover has an uneven shape. It is configured such that a mark is provided.
[0017]
As described above, the identification mark providing means that operates based on the signal from the detection means in each manufacturing process has a simple structure and a compact configuration that does not take up space, and can reliably apply the identification mark to an abnormal portion of the hose. You can do it.
[0018]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0019]
In the following description, the same components as those of the conventional example are denoted by the same reference numerals, and description thereof will be omitted.
[0020]
FIG. 1 is a flow chart showing the steps of a continuous hose production line according to the present invention. In the continuous hose production line, a step (A) of extruding an inner resin tube onto a mandrel (core material) is schematically illustrated. (B), extruding the inner rubber tube (C), braiding the reinforcing layer on the inner rubber tube (D), extruding the cover rubber (E), and manufacturing the hose (F), a step of coating a sheath made of a resin material or the like on a cover rubber (G), a step of heating and vulcanizing a hose coated with a sheath (H), a step of removing a sheath (H), I), a mandrel removal step (J), an inspection and finishing step (K), an identification marker detection step (L) including second abnormality detection means for detecting an identification marker of an abnormal portion of the hose, and a hose. Cutting anomalous partial, shipping step (M) is are continuously arranged.
[0021]
In the step (C) of extruding the inner rubber tube, a tube outer diameter measuring device (c1) and a tube unevenness detecting device (c2) constituting the first abnormality detecting means are installed, and the inner rubber tube is placed on the inner resin tube. After the tube is extruded, the outer diameter of the tube is measured by a non-contact type outer diameter measuring device, and the unevenness on the surface of the tube is automatically detected using a non-contact type unevenness detecting device.
[0022]
In the step (D) of braiding the reinforcing layer on the inner rubber tube, a first abnormality in which an abnormal state of the reinforcing layer, for example, a disorder of the braided reinforcing cord or a spiral reinforcing cord is detected by a television camera or the like. An abnormal state detecting device (d) for the reinforcing layer constituting the detecting means is provided. Further, in the cover rubber extrusion step (E), a non-contact type outer diameter measuring device (e) such as a laser outer diameter measuring device constituting the first abnormality detecting means is installed, and the inspection and finishing steps are performed. (K) is provided with an appearance unevenness inspection device (k) constituting a first abnormality detecting means.
[0023]
In the step (F) of applying an identification mark to an abnormal portion in the hose manufacturing process, an identification mark providing means 10 as shown in FIGS. 2 (a) and (b) or FIGS. 3 (a) and (b) is provided. For example, as shown in FIG. 2A, an identification tape 12 (aluminum tape or the like) as an identification mark is provided on the abnormal portion X of the cover rubber surface 11a of the hose 11, as shown in FIG. As shown in FIG. 2 (b), a supply / pasting device 13 for pasting, an ink jet device 15 for spraying paint (paint such as ink) onto an abnormal portion X of the cover rubber surface 11a through a nozzle 14, and further, FIG. As shown in (a) and (b), a scratching and marking device 17 for giving irregularities to an abnormal portion X of the cover rubber surface 11a of the hose 11 is used.
[0024]
The supply sticking device 13 sticks the identification tape 12 supplied from a tape supply device (not shown) to an abnormal portion X of the cover rubber surface 11a by a rotatable sticking roller 18.
[0025]
In addition, the ink jet device 15 sprays a predetermined amount of paint through the nozzle 14 on the abnormal portion X of the cover rubber surface 11a.
[0026]
Further, as shown in FIGS. 3A and 3B, the scratching and engraving device 17 includes a rotatable pulley-shaped guide roll 19 and an engraving roll 20 provided with irregularities 20a on its surface. At least one of the guide roll 19 and the engraving roll 20 is actuated to pinch the opposing outer peripheral surfaces of the hose 11 as shown in FIG. The structure is such that an indentation 16 is formed on the X.
[0027]
In this embodiment, a rotatable guide roll 19 whose position is fixed is used, and an engraving roll 20 which is lifted and lowered via a cylinder 21 on the center line of the guide roll 19 and is rotatably supported. You are using
[0028]
The form of the engraving 16 is not particularly limited. However, if the irregularities or scratches do not affect the quality of the hose without any abnormal part in a post-process such as damage to the reinforcing layer, the configuration of the engraving roll 20 is particularly preferable. It is not limited.
[0029]
As the second abnormality detecting means in the identification marker detecting step (L), for example, an engineering detecting means such as a television camera for detecting disturbance of the braided reinforcement cord, disturbance of the spiral reinforcement cord, or the like is used. is there.
[0030]
Next, a method of detecting an abnormality in the continuous hose production line will be described.
[0031]
In a continuous hose production line for continuously manufacturing a hose through a plurality of manufacturing steps as described above, a step (A) of extruding an inner resin tube onto a mandrel (core material), and applying an adhesive to the surface of the inner resin tube. (B), extruding the inner rubber tube (C), braiding the reinforcing layer on the inner rubber tube (D), and extruding the cover rubber (E). After that, in the step (C) of extruding the inner rubber tube, a tube outer diameter measuring device (c1) and a tube unevenness detector (c2), and in the step of braiding the reinforcing layer on the inner rubber tube (D), an abnormality of the reinforcing layer The state detecting device (d) and the outer diameter measuring device (e) are provided in the cover rubber extrusion step (E), and these first abnormality detecting means inspect whether or not there is a production abnormality.
[0032]
In the manufacturing process before the cover rubber extruding step (E), when the first abnormality detecting means detects the production abnormality of the hose 11, an abnormality detection signal is transmitted from the detection of the abnormality to the cover rubber extrusion step (E). ) Output to control means (not shown) of the identification marking means 10 installed at the rear.
[0033]
The control means calculates the operation start time of the identification mark providing means 10 from the pulse count number of the abnormality detection signal and the line speed (transport speed) of the hose 11, and controls the identification mark provision means 10 from the control means. Output to signal.
[0034]
That is, the distance between the abnormal state detecting device (d) and the identification marking means 10 is determined by the pulse count number, and the arrival time of the abnormal part is determined from this distance and the line speed (transport speed) of the hose 11 to determine the identification marking. The operation start time by the application means 10 is set.
[0035]
Then, the identification marking means 10 applies the identification marking to the cover rubber surface 11a at the location corresponding to the abnormal hose part X without stopping the continuous hose production line based on the control signal.
[0036]
As described above, the identification mark providing means 10 includes a supply and affixing device 13 for affixing an identification tape 12 (aluminum tape or the like) as an identification mark to the abnormal portion X of the cover rubber surface 11a of the hose 11, or the cover rubber surface 11a. An ink jet device 15 for spraying paint (paint such as ink) on the abnormal portion X of the hose through the nozzle 14, and a scratching and engraving device 17 for giving a mark 16 to the abnormal portion X of the cover rubber surface 11a of the hose 11. To use.
[0037]
The hose 11 in which the abnormal portion X of the hose 11 is provided with the identification mark by the identification mark providing means 10 is coated with a sheath on a cover rubber (G), the hose is heated and vulcanized (H), and the sheath is heated. After the removal process (I) and the mandrel removal process (J), the identification mark of the abnormal part X is detected when passing through the appearance unevenness inspection device (k) such as a laser outer diameter measuring device provided in the inspection and finishing process (K). The abnormal part X of the hose 11 is detected by the second abnormality detecting means in the identification mark detecting step (L). The abnormal portion X of the hose 11 is to cut and ship the product and then ship the product in the step (M) of cutting and shipping the product.
[0038]
Thus, when an abnormal point is detected in the continuous hose production line, the continuous hose production line is automatically stopped without stopping the continuous hose production line immediately after the cover rubber extrusion process (E) without stopping the continuous hose production line. An abnormal mark is applied to the abnormal portion X of the cover rubber surface 11a, the production is continued, and an abnormal mark is formed in the inspection and finishing process (K) and the identification mark detecting process (L) for detecting the abnormal mark X of the abnormal portion X of the hose 11. In the step (M) of detecting X, cutting and shipping the product, the product is shipped after cutting the abnormal portion X of the hose, so that a stable product can be continuously produced. is there.
[0039]
【The invention's effect】
The present invention provides a hose continuous production line for continuously producing a hose through a plurality of production steps as described above, wherein at least a production step prior to a cover rubber extrusion step of the hose is performed, When an abnormality in the hose is detected by the abnormality detecting means, an abnormality detection signal is output to the control means of the identification mark providing means installed at the rear of the cover rubber extrusion step from the time of the detection, and the abnormality detection signal is detected by the control means. The operation start time by the identification sign providing means is calculated from the pulse count number of the signal and the transfer speed of the hose, and based on the control signal from the control means, the cover rubber at the position corresponding to the abnormal portion of the hose is identified by the identification sign providing means. An identification mark is provided on the surface, and the identification mark of the abnormal portion is detected by the second abnormality detection means in the vicinity of the hose inspection and finishing process, and the product is shipped. The abnormal portion of the cover rubber surface is automatically cut off immediately after the cover rubber extrusion process without stopping the hose continuous production line when an abnormal part is detected in the hose continuous production line. The identification mark is given to the part, the production is continued, the abnormal part is detected in the inspection and finishing processes, and the abnormal part is removed in the shipping process to continuously produce a stable product without the abnormal part. There is an effect that can be.
[0040]
Further, the identification and detection device in the hose continuous production line of the present invention, based on an abnormality detection signal from the first abnormality detection means in each manufacturing process, behind the hose cover rubber extrusion process, detects an abnormal portion of the hose cover rubber surface. An identification mark providing means for applying an identification mark is installed, and a second abnormality detection means for continuously detecting the identification mark of the abnormal portion is installed near the hose inspection and finishing process. The identification marking means that operates based on the signal from the detection means has a simple structure and a compact structure that does not take up space, and has an effect that the identification marking can be reliably applied to an abnormal portion of the hose.
[Brief description of the drawings]
FIG. 1 is a flow chart showing steps in a continuous hose production line according to the present invention.
FIG. 2A is a perspective view of a supply sticking device that sticks an identification tape serving as an identification marker, and FIG. 2B is a schematic explanatory diagram of an ink jet device serving as an identification marker.
FIG. 3A is a side view of an engraving device as an identification marking means, and FIG. 3B is an enlarged front view of the guide roll and the engraving roll of FIG.
FIG. 4 is a flowchart in a process of a conventional hose continuous production line.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Identification mark provision means 11 Hose 11a Cover rubber surface 12 Identification tape 13 Supply and sticking device 14 Nozzle 15 Ink jet device 16 Marking 17 Scratching and marking device 18 Sticking roller 19 Guide roll 20 Marking roll 20a Unevenness 21 Cylinder X Abnormal part

Claims (7)

In a hose continuous production line that continuously manufactures hoses through multiple manufacturing processes,
At least in the manufacturing process before the hose cover rubber extruding process of the plurality of manufacturing processes, when the first abnormality detecting means detects a manufacturing error of the hose, an abnormality detection signal is output from the detection at the time of the detection. It outputs to the control means of the identification marking means provided at the rear, and the control means calculates the operation start time by the identification marking means from the pulse count number of the abnormality detection signal and the transfer speed of the hose. Based on the control signal from the above, an identification mark is given to the surface of the cover rubber corresponding to the abnormal portion of the hose by the identification mark applying means, and the abnormal area is detected by the second abnormality detecting means near the hose inspection and finishing process. A method for detecting an abnormality in a continuous hose production line, comprising detecting an identification mark and cutting and removing an abnormal portion in a shipping process. First abnormality detecting means for detecting a production abnormality of a hose is installed in each of a plurality of manufacturing steps of the hose continuous production line, and control means is provided based on an abnormality detection signal from the first abnormality detection means which has detected the abnormality. 2. The method for detecting an abnormality in a continuous hose production line according to claim 1, wherein an identification mark is provided on a surface of the cover rubber corresponding to the abnormal portion of the hose by an identification mark providing means provided at a rear side of the cover rubber extrusion step through the cover. The method for detecting an abnormality in a continuous hose production line according to claim 1 or 2, wherein the identification mark applying means is one selected from an identification tape, a paint spray, and a means for imparting irregularities to the surface of the cover rubber. The method for detecting an abnormality in a continuous hose production line according to claim 1, wherein the abnormality detecting means is a non-contact type outer diameter measuring device. In a continuous hose production line comprising a plurality of manufacturing steps continuously provided with a first abnormality detection means for detecting an abnormality in hose production,
Behind the cover rubber extruding step of the hose, based on an abnormality detection signal from the first abnormality detection means in each manufacturing process, an identification mark providing means for applying an identification mark to an abnormal part on the surface of the cover rubber of the hose via the control means. Characterized in that a second abnormality detecting means for continuously detecting the identification mark of the abnormal part is installed near the hose inspection and finishing process. Detection device. The identification mark providing means is one selected from a supply / applying device for supplying and attaching an identification tape to the cover rubber surface of the hose, an ink jet device for applying a paint spray, a scratching / marking device for providing irregularities on the cover rubber surface. The identification and detection device for an abnormality detection unit in a continuous hose production line according to claim 5. The engraving means comprises a rotatable guide roll and an engraved roll having irregularities on the surface, and at least one of the guide roll and the engraved roll operates to clamp the hose, and the hose cover has an irregular shape. The identification and detection device of the abnormality detection unit in the continuous hose production line according to claim 6, wherein the device is configured to perform engraving.

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