JP2004136140A - Liquid material applying method adapted to curved surface body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid material applying method adapted to a curved surface body, capable of being adapted immediately even if the outer diameter of a hose or the film thickness of an adhesive is changed and capable of uniformly applying various liquid materials other than the adhesive to various curved surface bodies other than the hose. <P>SOLUTION: The liquid material applying method adapted to the curved surface body comprises a supply means 3 for supplying the liquid material 2 to the curved surface body 1, a measuring means 4 for measuring the thickness of the liquid material 2 applied to the curved surface body 1 and an adjusting means 5 for increasing and decreasing the amount of the liquid material 2 supplied in cooperation with the measuring means 4. Preferably, the curved surface body 1 is a hose and the liquid material 2 is an adhesive. The supply means 3 supplies the liquid material 2 to a guide 6 for winding a reinforcing layer 1B around a hose inner tube 1A and the measuring means 4 measures the film thickness (t) of the liquid material 2 applied to the periphery of the curved surface body 1. The adjusting means 5 adjusts the amount of the liquid material 2 supplied so that the film thickness (t) becomes uniform when the reinforcing layer 1B is continuously wound around the hose inner tube 1A while drawing the curved surface body 1. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a method for attaching a liquid material such as an adhesive or a paint to a curved body such as a hose, a tube, or a tube so that the liquid material has a uniform thickness. The present invention relates to a method for attaching a liquid material to a curved body, which is suitable for a step of applying an adhesive.
[0002]
[Prior art]
In manufacturing a hose, a step of applying an adhesive is generally required for bonding the inner tube of the hose to the reinforcing layer and the reinforcing layer to the outer cover. For example, in the adhesive applying means as shown in FIG. 3, a hose intermediate body 10 having a reinforcing layer formed in advance around the inner tube of the hose is sent to the crosshead 11, and the adhesive is extruded in the crosshead 11. The outer peripheral surface of the hose intermediate 10 is coated with an adhesive sent from the machine 12 through the flow path 13 to form an adhesive layer (for example, see Patent Document 1).
[0003]
[Patent Document 1]
JP-A-9-239859 (page 4, FIG. 3-4)
[0004]
[Problems to be solved by the invention]
However, in the method of applying an adhesive described in Patent Document 1, the cross head 11 must be individually prepared according to the outer diameter of the hose intermediate body 10 and the desired thickness of the adhesive layer. There is a problem in the point. Further, when changing the film thickness of the adhesive layer, even if the hose intermediate body 10 has the same outer diameter, the hose intermediate body 10 has to be sent to another crosshead 11, and the productivity is also reduced. There's a problem.
[0005]
Therefore, the present invention can be applied immediately even when the outer diameter of the hose or the film thickness of the adhesive is changed, and is not limited to the hose, and is not limited to the adhesive. It is an object of the present invention to provide a method for attaching a liquid material to a curved body capable of uniformly attaching various liquid materials.
[0006]
[Means for Solving the Problems]
The present invention has been made in order to solve the above problems, the gist of which is a means for supplying a liquid to a curved body, a means for measuring the thickness of the liquid attached to the curved body, and a measuring means. The present invention relates to a method for attaching a liquid material to a curved body, comprising an adjusting means for increasing and decreasing the supply amount of the liquid material in conjunction therewith.
[0007]
Preferably, the curved body is a hose and the liquid body is an adhesive, and the supply means supplies the liquid body to a guide portion around which the reinforcing layer is wound around the inner tube of the hose, and the measuring means attaches the liquid body around the curved body. When the reinforcing layer is continuously wound around the inner tube of the hose while measuring the film thickness of the curved surface, the adjusting means adjusts the supply amount of the liquid material so that the film thickness becomes uniform. The present invention relates to a method for attaching a liquid material.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
The liquid material attaching method of the present invention is applied to a curved body. Here, the term “curved body” refers to a body whose outer surface is formed as a curved surface, and which has a surface which is difficult to maintain a uniform thickness as it is when the liquid material adheres from above and flows downward. That is, hoses, tubes, pipes, ropes, electric wires, and the like having a circular, elliptical, fan-shaped, or ∩-shaped cross section correspond to the above.
[0009]
Further, the liquid material adhered by the method of the present invention refers to a liquid material having a fluidity that, when adhered to a curved body from above, flows down and it is difficult to maintain a uniform thickness as it is. That is, adhesives, paints, coating materials, and the like having various viscosities correspond.
[0010]
The liquid material applying method according to the present invention includes a liquid material supply unit for the curved body, a thickness measuring unit for the liquid body attached to the curved body, and an adjustment for increasing or decreasing the supply amount of the liquid body in conjunction with the measuring unit. Means. That is, the thickness of the liquid material attached to the curved body is checked by the measuring means by the supply means, and the supply amount of the liquid material is increased or decreased by the adjusting means according to the result, so that the liquid material has a uniform thickness with respect to the curved body. Is to be adhered.
[0011]
Therefore, for example, only by changing the set value of the measuring means, without changing the supply means, the measuring means and the adjusting means, for curved bodies having various shapes, outer diameters, materials, etc., various types, A liquid material having a viscosity or the like can be uniformly adhered at a desired thickness.
[0012]
As the liquid supply means, for example, means for storing the liquid in a tank, sending air to the tank, and supplying the air through a nozzle provided at the end of the hose may be considered. In addition, as a means for measuring the thickness of the liquid material, for example, a laser sensor is arranged around a curved body, the distance between the curved body and the laser beam is matched with a desired thickness of the liquid material, and the irradiated laser beam is a liquid material. Means for measuring whether or not the thickness of the liquid material is appropriate depending on whether or not the light is reflected may be considered. Further, as an adjusting means for increasing or decreasing the supply amount of the liquid material, a means for adjusting the flow rate of the liquid material by installing an automatic valve in a hose between the tank storing the liquid material and the nozzle can be considered.
[0013]
As described above, the method for attaching a liquid material to a curved body according to the present invention has a very wide range of application, but the preferred method is that the curved body is a hose and the liquid is an adhesive. This is used in the adhesive application step. That is, the supply means supplies the liquid material to the guide portion around which the reinforcing layer is wound around the hose inner pipe, and the measuring means measures the film thickness of the liquid material adhered around the curved body, and pulls the curved inner body while pulling the curved body. The adjusting means adjusts the supply amount of the liquid material so that the film thickness becomes uniform when the reinforcing layer is continuously wound.
[0014]
When manufacturing a hose, a step of applying an adhesive is generally required for bonding the inner tube of the hose to the reinforcing layer, the reinforcing layer to the outer cover, and the like. According to the method for applying a liquid material, it is possible to flexibly cope with changes in the outer diameter of the hose and the film thickness of the adhesive, and it is excellent in economy and productivity.
[0015]
【Example】
Hereinafter, the best embodiment of the method for attaching a liquid material to a curved body according to the present invention will be described with reference to the drawings. FIG. 1 is a conceptual diagram showing an example of the liquid material attaching method of the present invention. In the embodiment shown in FIG. 1, the curved body 1 is a hose and the liquid material 2 is an adhesive, and is used in an adhesive application step in manufacturing a hose.
[0016]
That is, in manufacturing a hose, a step of applying an adhesive is generally required for bonding the inner tube of the hose to the reinforcing layer and the reinforcing layer to the outer cover. For example, in the step shown in FIG. 1, when the face plate 7 is rotated while pulling the hose inner tube 1A, the reinforcing layer 1B of the wire wound on the bobbin 8 is drawn out and spirally wound around the hose inner tube 1A.
[0017]
At this time, when the liquid 2 (adhesive) pumped from the storage tank 3A by air is discharged from the nozzle 3C, the liquid 2 (adhesive) itself becomes a ball at the front of the guide 6 due to the viscosity of the liquid 2 itself. If the discharge amount is too large, the ball-shaped liquid 2 (adhesive) becomes too large and flows down. On the other hand, if the discharge amount is too small, poor adhesion will occur and an incompatible product will be generated.
[0018]
Therefore, as shown in FIG. 2, the problem is avoided by the measuring means 4 including a reflective laser sensor attached above the hose inner tube 1 </ b> A constituting the curved body 1. That is, the distance between the laser beam irradiated from the measuring means 4 and the hose inner tube 1A is made to match the desired film thickness t. Then, when the laser beam is reflected, the measuring means 4 is turned on, and the liquid 2 (adhesive) is sent from the storage tank 3A to the nozzle 3C by closing the adjusting means 5 of the automatic valve installed on the hose 3B. Not to be.
[0019]
To explain this point in more detail, when the laser beam irradiated by the measuring means 4 hits the ball-shaped liquid material 2 (adhesive) and reflected light is generated, the automatic valve of the adjusting means 5 is closed and the supplying means 3 Is stopped so that the balls of the liquid 2 (adhesive) do not become large. Conversely, unless reflected light is generated, the automatic valve of the adjusting means 5 remains open, and the liquid 2 (adhesive) continues to adhere to the curved body 1 (hose).
[0020]
Therefore, the thickness t of the liquid 2 (adhesive) adhered to the periphery of the curved body 1 (hose) is always measured by the measuring means 4, and the adjusting means 5 adjusts the supply amount of the liquid 2 (adhesive). Therefore, in the adhesive application step of continuously winding the reinforcing layer 1B around the hose inner tube 1A while applying the adhesive, the film thickness t of the liquid 2 (adhesive) is always uniform.
[0021]
【The invention's effect】
The method for attaching a liquid material to a curved body according to the present invention includes: a supply unit for supplying the liquid material to the curved body; a measurement unit for measuring the thickness of the liquid material attached to the curved body; Since it consists of adjusting means, for example, only by changing the set value of the measuring means, without changing the supply means, measuring means and adjusting means, for a curved body having various shapes, outer diameters, materials, etc. Thus, liquids of various types and viscosities can be uniformly adhered at a desired thickness.
[0022]
In particular, the curved body is a hose and the liquid body is an adhesive, and the supply means supplies the liquid body to the guide portion around which the reinforcing layer is wound around the hose inner tube, and the measuring means adheres to the periphery of the curved body film of the liquid body. When the thickness is measured and the reinforcing layer is continuously wound around the inner tube of the hose while pulling the curved body, if the adjusting means adjusts the supply amount of the liquid material so that the film thickness becomes uniform, It can flexibly respond to changes in the outer diameter of the hose and the film thickness of the adhesive, and is excellent in economy and productivity.
[Brief description of the drawings]
FIG. 1 is a conceptual diagram showing an example in which the method for attaching a liquid material to a curved body according to the present invention is used in an adhesive application step in manufacturing a hose.
FIG. 2 is a conceptual diagram showing a means for measuring the thickness of a liquid material attached to a curved body in the method for attaching a liquid body to a curved body shown in FIG.
FIG. 3 is a conceptual view showing a conventional example of a method of applying an adhesive when manufacturing a hose.
[Explanation of symbols]
1 curved surface body 1A hose inner tube 1B reinforcing layer 2 liquid material 3 supply means 3A storage tank 3B hose 3C nozzle 4 measuring means 5 adjusting means 6 guide 7 face plate 8 bobbin 10 Hose intermediate 11 {crosshead 12} adhesive extruder 13 {flow path t} film thickness

Claims (2)

The means (3) for supplying the liquid (2) to the curved body (1), the means (4) for measuring the thickness of the liquid (2) attached to the curved body (1), and the measuring means (4) are interlocked. Adjusting means for increasing or decreasing the supply amount of the liquid material (2) by applying the liquid material to the curved body. The curved body (1) is a hose and the liquid (2) is an adhesive, and the supply means (3) is a liquid (2) on a guide (6) part around which the reinforcing layer (1B) is wound around the inner tube (1A) of the hose. And the measuring means (4) measures the thickness (t) of the liquid material (2) attached around the curved body (1), and pulls the curved body (1) while pulling the curved body (1). The adjusting means (5) adjusts the supply amount of the liquid (2) so that the film thickness (t) becomes uniform when the reinforcing layer (1B) is continuously wound around the liquid material. Item 4. The method for attaching a liquid material to a curved body according to Item 1.

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