KR101180137B1 - Coating apparatus and coating method of a coating material to a wire rod - Google Patents

Abstract

The coating agent is attached to the entire circumference of the outer circumference of the wire rod while suppressing the deterioration, thereby obtaining a coating device capable of adjusting the film thickness of the applied coating agent. The diameter of the guide hole of the inlet guide is smaller than the diameter of the dip hole, and the diameter of the guide hole of the outlet guide is smaller than the diameter of the dip hole so as to retain the coating agent in the tubular dip hole. The guide hole of the guide, the guide hole of the tubular trough, the guide hole of the outlet side guide, and the adjustment hole of the adjustment die are coaxial, and the wire rod is introduced from the guide hole of the inlet side guide, By passing through, the wire rod with a coating agent was led out of the guide hole of the exit guide, and when passing through the adjustment hole, the film thickness of the coating agent attached to the wire rod was adjusted in the adjustment hole.

Description

Coating device and coating method of coating agent to wire rod {COATING APPARATUS AND COATING METHOD OF A COATING MATERIAL TO A WIRE ROD}

The present invention relates to a coating apparatus and a coating method for applying a volatile coating agent to a long material such as a wire rod.

For example, when the resin is coated on a stranded cable twisted with steel wires, a coating agent, for example, an adhesive or a primer, is applied to the entire circumference of the outer circumference of the stranded wire. It is common to fix and fix resin and resin. Applying the adhesive to the outer circumference of the steel stranded wire, soaking the roller 2 in the bonding tank 1 filled with the adhesive 3, as shown in Figure 5, and the stranded wire 4 on the outer peripheral surface of the roller (2) The apparatus which presses, moves to the arrow direction, makes the adhesive agent 3 continuously contact the stranded wire 4, and apply | coats the adhesive agent 3 to the stranded wire 4 is used. 5 is a perspective view which shows a structure in the coating apparatus of the conventional coating agent to the wire rod. Such an application device is provided with the adhesive circulation path | route which collects the fixed amount of adhesive agent 3 to the adhesion tank 1, and collect | recovers the fixed amount of adhesive agent 3 in the adhesion tank 1 at this time.

Generally, the adhesive contains an organic solvent. In the case of applying an adhesive containing a highly volatile organic solvent to a forced stranded wire, in such a coating apparatus, the organic solvent of the adhesive in the bonding tank volatilizes with the operation time, the viscosity of the adhesive rises, and the adhesion amount on the outer surface of the stranded wire ( Film thickness) fluctuates.

On the other hand, Patent Literature 1 discloses a bottom portion having a guide hole having a shape substantially the same as the elongated outer circumferential shape forming a substantially constant cross-sectional shape, and a guide hole provided coaxially with the guide hole and on one side surface of the bottom portion. A cylindrical application portion having a large application hole, a supply hole for the adhesive opening to the application hole, and a supply portion for supplying the adhesive to the supply hole of the application portion, wherein the object is guided to the application hole of the application portion, A coating apparatus is described which moves inside and is applied with an adhesive supplied from a supply hole.

In addition, Patent Literature 2 discloses that the first paint supplied from the first paint tank and the second paint supplied from the second paint tank are mixed in two liquids by a mixer and supplied to the paint tank, and the paint tank is coated via a tube. The die is connected, the wire rod passes through the hole drilled in the tube, is introduced into the paint die, the paint supplied to the paint tank flows down the inside of the tube based on its own weight, and is continuously supplied to the paint die, The coating apparatus apply | coated to the wire rod surface by a coating die is described.

Japanese Utility Model Publication 1987-99377 (FIGS. 1 and 2) Japanese Unexamined Patent Publication No. 2008-173625 (FIG. 2)

In the apparatus of Patent Document 1 described above, when applied to a long material having a complicated cross-sectional shape, such as a stranded wire twisted together with a plurality of steel wires, that is, a wire rod, the adhesive does not become wet in the application hole and the entire outer circumference of the wire rod, Liquid dryness (uncoated portion) of the adhesive may occur in the circumferential direction and the axial direction of the wire rod. In addition, in the apparatus of patent document 2 mentioned above, in order to supply paint, the upper end of a paint tank is opening. When using the adhesive which consists of highly volatile organic solvents, the organic solvent of an adhesive may volatilize, and the opening part may coat | cover leather (film | membrane which consists of a resin component).

The present invention has been made to solve the above problems, and even in a wire rod having a complicated cross-sectional shape such as a forced stranded wire, the volatile coating agent is adhered to the entire circumference of the outer circumference by suppressing alteration and the film thickness of the coating agent adhered thereto. It is providing the application | coating apparatus and application | coating method of the coating agent to the wire rod which can be adjusted.

The coating device of the coating agent to the wire rod according to the present invention has an inlet side guide having a guide hole through which the wire rod passes, and an outlet side guide having a guide hole through which the wire rod passes, and the coating agent is applied to the wire rod which is supplied with the coating agent and passes therethrough. And a adjusting die for adjusting the film thickness of the coating agent adhered to the wire rod, having a tubular tub having an immersion hole for attaching the wire rod, and an adjustment hole for close contact with the tubular tank and allowing the wire rod with a coating agent to pass therethrough. The diameter of the guide hole of the inlet side guide is smaller than the diameter of the immersion hole, and the diameter of the guide hole of the outlet side guide is formed smaller than the diameter of the immersion hole so that the coating agent remains in the hole. The guide hole of the side guide, the deposition hole of the said tubular shape, the guide hole of the said exit side guide, and the said adjustment die The adjustment hole is coaxial, the wire is introduced from the guide hole of the inlet side guide, passes through the deposition hole of the tubular tub, and the wire rod with the coating agent is drawn from the guide hole of the outlet side guide, When passing through the hole, the film thickness of the coating agent attached to the wire rod in the adjusting hole is adjusted.

Moreover, the coating method of the coating agent to the wire rod which concerns on this invention is a wire rod which has an entrance side guide which has the guide hole which a wire rod passes, and an exit side guide which has the guide hole which a wire rod passes, and a coating agent is supplied and filled. And an adjustment die for adjusting the film thickness of the coating agent adhered to the wire rod, having a tubular tub having a deposition hole for attaching the coating agent to the wire rod, and an adjustment hole for being in close contact with the tubular tank and allowing the wire rod with the coating agent to pass therethrough. The diameter of the guide hole of the inlet side guide is smaller than the diameter of the immersion hole, and the diameter of the guide hole of the outlet side guide is formed to be smaller than the diameter of the immersion hole so as to retain the coating agent in the immersion hole. The guide hole of the inlet guide, the deposition hole of the tubular tub, the guide hole of the outlet guide, and the adjustment The adjustment hole of the switch is coaxial, and the wire rod is introduced from the guide hole of the inlet guide, the tubular deposition hole is passed through, and the wire rod with the coating agent is drawn from the guide hole of the outlet guide. When the wire rod passes through the adjustment hole, the film thickness of the coating agent attached to the wire rod in the adjustment hole is adjusted.

According to the coating apparatus and application | coating method of the coating agent to the wire rod concerning this invention, the diameter of the guide hole of the said inlet guide is smaller than the diameter of the said immersion hole, and the said exit side guide so that a coating agent may remain in the said immersion hole. The guide hole has a diameter smaller than that of the immersion hole, and the guide hole of the inlet guide, the immersion hole of the tubular tubular guide, the guide hole of the outlet guide, and the adjustment hole of the adjustment die In the coaxial phase, the coating agent staying in the immersion hole is suppressed from contacting the outside air, and the coating agent can be attached over the entire circumference of the outer circumference of the wire rod, and the film thickness of the coating agent attached to the wire rod can be adjusted. .

BRIEF DESCRIPTION OF THE DRAWINGS The perspective view which shows a structure in the coating device of the coating agent to the wire rod which concerns on Embodiment 1 of this invention.
2 is a sectional view taken along the line AA in Fig. 1,
3 is a cross-sectional view taken along line BB of FIG.
4 is a cross-sectional view taken along line CC of FIG. 1;
Fig. 5 is a perspective view showing the structure of a conventional coating device for coating agent on wire rods.

Embodiment 1

BRIEF DESCRIPTION OF THE DRAWINGS It is a perspective view which shows a structure in the coating apparatus of the coating agent to the wire rod which concerns on Embodiment 1 of this invention. 2 is a sectional view taken along the line A-A in Fig. 3 is a cross-sectional view taken along the line B-B in FIG. 4 is a cross-sectional view taken along the line C-C of FIG. In embodiment, the volatile adhesive agent is demonstrated to an example as a volatile coating agent. In the figure, the guide roller 12 has a pair of horizontal rollers and a pair of vertical rollers, and guides the wire 11, such as a stranded steel wire, to the tubular tub 13. The tubular tubular material 13 is interposed between the tubular tubular body 14 and the inlet side guide plate 16 which closely contacted the tubular tubular body 14 via the sealing material 15, and the sealing material 17. And an outlet side guide plate 18 brought into close contact with the tubular tubular body 14 and a valve 20 for opening and closing the pipe 19 to which the adhesive is supplied. The valve 20 can be opened and closed by air drive. The inlet side guide plate 16, the tubular body 14, and the outlet side guide plate 18 may be integrally formed by combining them without interposing the sealing member. The cylindrical tubular body 14 is formed with an immersion hole 21 through which a cross section penetrates circularly, temporarily retaining a highly volatile adhesive, depositing a wire rod passing through the inside, and attaching the adhesive. Further, in the tubular tubular body 14, a cross section penetrates in a U shape, and a buffer hole 22 is formed which surrounds three sides of the immersion hole 21 (see Fig. 4).

The adhesive supplied from the pipe 19 via the valve 20 is introduced into the buffer hole 22 from the valve hole 23 and filled in the buffer hole 22. The adhesive is also introduced from the buffer hole 22 into the deposition hole 21 via the supply hole 24. The supply hole 24 which introduce | transduces an adhesive agent into the immersion hole 21 from the buffer hole 22 has three places (left and right spaced apart at substantially equal intervals in the circumferential direction in the circle | round | yen of the short cross section of the immersion hole 21). Side and lower sides) (see FIG. 3). By these, the adhesive agent is supplied relatively evenly to the circumferential direction of the circle | round | yen of the short direction cross section of the immersion hole 21. The group of supply holes 24 formed in the three places is provided in plural places and four places shown in FIG. 2 in the longitudinal direction of the deposition hole 21. Reference numeral 25 is a cap. The tubular forging body 14 and the valve 20 are formed of stainless steel with excellent solvent resistance.

The inlet side guide plate 16 is in close contact with the seal member 15 in the tubular body 14, and a guide hole 26 is formed. The diameter of the guide hole 26 is smaller than the diameter of the deposition hole 21 of the tubular forging body 14, and the wall surface function of the tubular forging body 14 and the tubular forging body 14 of the wire rod 11 to the tubular forging body 14. It also serves as a guide. Since the inlet guide plate 16 is in contact with the wire 11 and is easy to wear, the edge portion of the guide hole 26 of the inlet guide plate 16 is subjected to a fillet process, and SKD11 as a material. After vacuum quenching to raise the surface hardness, further hard chromium plating was used.

The exit guide plate 18 is also in close contact with the seal member 17 in the tubular body 14, and the guide hole 27 is formed. The diameter of the guide hole 27 is smaller than the diameter of the deposition hole 21 of the tubular forging body 14, and guides the wall surface mechanism of the tubular forging body 14 and the adjustment die 28 of the wire rod 11. Doubles as Since the exit guide plate 18 is easily in contact with the wire 11, the edge portion of the guide hole 27 of the exit guide plate 18 is filleted, and vacuum quenched in SKD11 as a material. After raising the surface hardness, what used hard chromium plating is used. The deposition hole 21 of the tubular forging body 14 is closed by the inlet side guide plate 16 having the guide hole 26 and the outlet side guide plate 18 having the guide hole 27, and the inlet side. The diameter of the guide hole 26 of the guide plate 16 is smaller than the diameter of the deposition hole 21, and the diameter of the guide hole 27 of the outlet guide plate 18 is smaller than the diameter of the deposition hole 21. Therefore, the contact of the adhesive with the outside air is extremely suppressed, and the adhesive can be filled and retained in the deposition hole 21.

The adjusting die 28 is in close contact with the seal member 29 by the outlet side guide plate 18 of the tubular tub 13, and the adjustment die derived from the guide hole 27 of the outlet side guide plate 18. The film thickness of the adhesive agent adhered to the wire rod 11 passing through the adjustment hole 32 in (28) is adjusted. The adjustment die 28 is comprised from the die holder 30 and the adjustment die main body 31, and the adjustment die main body 31 from which the diameter of the adjustment hole 32 differs can be replaced easily. The diameter of the adjustment hole 32 of the adjustment die main body 31 is smaller than the diameter of the deposition hole 21 of the tubular forging body 14, and is larger than the diameter of the guide hole 27 of the exit side guide plate 18. small. In addition, the adjustment hole 32 of the adjustment die main body 31 is the guide hole 26 of the inlet side guide plate 16, the immersion hole 21 of the cylindrical-shaped main body 14, and the exit side guide plate 18. As shown in FIG. It is coaxial with the guide hole 27 of. The wire rod 11 is prevented from contacting the wire rod 11 with the holes 26, 21, 27, and 32 by moving the wire rod 11 on the axis thereof. The film thickness of the adhesive agent attached to (11) can be adjusted with high precision. As a material of the adjustment die 28, what hardened chromium plating is used after vacuum-quenching to SKD11 and raising hardness. Fluorine resins, such as polytetrafluoroethylene, are used for the sealing materials 15, 17, and 29.

In the adhesive tank 36, the sealing lid 35 is opened and closed, the adhesive 37 is thrown in and stored, and the strip | belt-shaped silicon heater 38 is wound around the lower outer periphery of the adhesive tank 36 as a temperature adjustment mechanism. The adhesive tank 36 is equipped with the stirrer 39 which has the stirring blade 34, and the adhesive agent 37 is stirred in order to reduce the temperature nonuniformity of the adhesive agent 37 in a tank. The arrow shows the stirring direction by the stirrer 39. The gear pump 40 pumps and supplies the adhesive 37 from the adhesive tank 36 to the tubular tank 13 through the piping 19. Fluorine resins, such as polytetrafluoroethylene, and stainless steel materials are used for piping. A strip-shaped silicon heater is wound around the pipe 19 of the gear pump 40 as a temperature adjusting mechanism (not shown), and a cartridge heater is embedded in the tubular tank 13. In addition, although not shown in figure, the wire unwinding apparatus is provided in the front end of an application apparatus, and the hot air drying apparatus of the wire rod which apply | coated the adhesive agent, and the winding apparatus of the wire rod are provided in the rear end.

Next, the application | coating method of the coating device of the coating agent to a wire rod is demonstrated. As shown in Fig. 1, the wire rod is guide roller 12 → tubular tub 13 in the following order (inlet side guide plate 16 + tubular tubular body 14 + outlet side guide plate 18). → It passes through the adjustment die 28, and hold | maintains stranded wire wire with a fixed tension. The heater of each part as a temperature control mechanism mentioned above is heated, and it stirs and makes the adhesive agent 37 in the adhesive tank 36 be set liquid temperature. At the start of the operation, the application device gear pump 40 is rotated and the valve 20 is opened, and the adhesive is supplied to the deposition hole 21 of the tubular tank 13 via the buffer hole 22. Let's do it. Then, the unwinding device, the winding device, and the hot air drying device (not shown) start the operation, the wire rod travels, and the guide roller 12 → the tubular tub 13 (inlet side guide plate 16 + tubular tubular main body). (14) + outlet side guide plate 18] → passes through the adjusting die 28 in order. At this time, the space between the wall of the immersion hole 21 of the cylindrical tub 13 and the pole of the wire 11 is filled with the adhesive pumped by the gear pump 40, and the adhesive is attached to the entire circumference of the wire outer circumference. The adhesive adhering to the wire rod is squeezed out in an amount corresponding to the diameter of the adjusting hole 32 of the adjusting die 28, and the film thickness of the adhesive becomes a predetermined thickness. A predetermined adhesive coating (resin coating) is formed on the entire circumference of the wire outer periphery by passing the wire rod having the adjusted coating amount of the adhesive through the drying apparatus and volatilizing the organic solvent in the adhesive.

Example 1

Next, Example 1 will be described. Example 1 was verified by the following conditions using the coating device of the coating agent to the wire rod shown in FIG.

An adhesive made of about 10 wt% synthetic resin as nonvolatile matter and about 90 wt% of toluene, isopropylene alcohol, ethyl alcohol, etc. as a nonvolatile matter, is used for about φ 1.3 mm stranded wire twisted with seven φ0.4 mm steel wires. did.

The guide hole 26 of the inlet side guide plate 16 was phi 2 mm, the hole edge part was R2.5 mm fillet process, and the hole length was 15 mm. The guide hole 27 of the exit guide plate 18 was phi 2 mm, the hole edge part was R2.5 mm fillet process, and the hole length was 15 mm. The immersion hole 21 of the tubular forging body 14 has a diameter of 3 mm, a hole length of 72 mm, a supply hole of φ 2 mm, and at three places in the circumferential direction in a circle of the short-side cross section of the deposition hole 21, Four places were provided in 12 mm intervals in the longitudinal direction of the immersion hole 21. As for the buffer hole 22, the cross section of the short direction was made into U shape with width 4mm. The adjusting hole 32 of the adjusting die 28 had a diameter of 1.5 mm and a hole length of 30 mm. The strand speed was 15 m / min, the tension at the time of running was 120 N, and the temperature in a hot air drying apparatus was 90 degreeC. The liquid temperature of the adhesive agent was 25 degreeC, and the feed amount by the gear pump was about 7 ml / min. As a result, it was confirmed that liquid dryness did not occur in about 10 hours of operation time in about 9000m stranded wire, and it could be apply | coated substantially uniformly with the film thickness of about 6 micrometers of convex parts.

In addition, this invention is not limited to Embodiment 1 and Example 1 mentioned above, A various deformation | transformation is possible within the range which does not change the summary. For example, in Embodiment 1, although the number of processes of a wire rod is one, several sets of cylindrical tanks and valves are prepared, and pipe connection to a common gear pump is carried out to the wire rod which can be processed in several parallel. You may form the coating device of a coating agent. In addition, in Embodiment 1, although the one-component organic solvent containing adhesive was used as a coating agent, it can be used for a varnish, an enamel, a coating material, and a two or three liquid mixed adhesive agent. In addition, in Embodiment 1, although it set as the coating device of the coating agent to a horizontal wire rod, you can comprise the coating agent application apparatus to the vertical wire rod becoming vertical (direction parallel to the direction of gravity). In addition, a cover may be provided in order to prevent dust and dirt from admixing into the tubular portion. Moreover, in order to prevent the influence of the ambient temperature on a coating agent, you may put the gas adjusted temperature in the cover provided in the part of a cylindrical tank.

11: wire rod 12: guide roller
13: cylindrical shape forging 14: cylindrical shape forging body
15: sealing material 16: entrance side guide plate
17: sealing material 18: exit guide plate
19: piping 20: valve
21: immersion hole 22: buffer hole
23: valve hole 24: supply hole
25: cap 26: guide hole
27: guide hole 28: adjusting dice
29: sealing material 30: die holder
31: adjusting die body 32: adjusting hole
34: stirring blade 35: airtight lid
36: adhesive tank 37: adhesive
38 silicon heater 39 agitator
40: gear pump

Claims (5)

In the coating device of the coating agent to the wire rod,
A tubular forging having an inlet side guide having a guide hole through which the wire rod passes, an outlet side guide having a guide hole through which the wire rod passes, and a deposition hole for attaching the coating agent to the wire rod through which the coating agent is supplied and filled;
It is provided with the adjustment die which closely adheres to the said cylindrical shape tank, passes through the wire rod with a coating agent, and adjusts the film thickness of the coating agent adhered to the wire rod,
The diameter of the guide hole of the inlet side guide is smaller than the diameter of the immersion hole, and the diameter of the guide hole of the outlet side guide is formed to be smaller than the diameter of the immersion hole so as to retain the coating agent in the immersion hole.
The guide hole of the said inlet guide, the immersion hole of the said tubular shape, the guide hole of the said exit guide, and the adjustment hole of the said adjustment die are coaxial,
When the wire rod is introduced from the guide hole of the inlet guide, passes through the deposition hole of the tubular tub, the wire rod with the coating agent is drawn out of the guide hole of the outlet guide, and passes through the adjustment hole. To adjust the film thickness of the coating agent attached to the wire rod
Coating device of coating agent to wire rod. The method of claim 1,
The coating tank,
Further comprising a gear pump for feeding and feeding the coating agent from the coating agent tank to the tubular tank through a pipe.
Coating device of coating agent to wire rod. The method according to claim 1 or 2,
The tubular tank having the immersion hole is provided with a buffer hole surrounding the immersion hole, the coating agent fed from the gear pump is filled and supplied to the buffer hole, and the coating agent supplied and filled into the buffer hole is deposited. To feed the hole
Coating device of coating agent to wire rod. The method according to claim 1 or 2,
And a temperature adjusting mechanism for temperature-adjusting the coating agent tank, the pipe, the gear pump, and the tubular bath.
Coating device of coating agent to wire rod. In the coating method of the coating agent to a wire rod,
A tubular forging having an inlet side guide having a guide hole through which the wire rod passes, an outlet side guide having a guide hole through which the wire rod passes, and a deposition hole for attaching the coating agent to the wire rod through which the coating agent is supplied and filled;
It is provided with the adjustment die which closely adheres to the said cylindrical shape tank, passes through the wire rod with a coating agent, and adjusts the film thickness of the coating agent adhered to the wire rod,
The diameter of the guide hole of the inlet side guide is smaller than the diameter of the immersion hole, and the diameter of the guide hole of the outlet side guide is formed to be smaller than the diameter of the immersion hole so as to retain the coating agent in the immersion hole.
The guide hole of the said inlet guide, the immersion hole of the said tubular shape, the guide hole of the said exit guide, and the adjustment hole of the said adjustment die are coaxial,
When the wire rod is introduced from the guide hole of the inlet side guide, passes through the deposition hole of the tubular tub, the wire rod having the coating agent is drawn from the guide hole of the outlet side guide, and the wire rod passes through the adjustment hole. The film thickness of the coating agent attached to the wire rod in the adjustment hole is adjusted to
Application method of coating agent to wire rod.

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