CN112517331A - Pipe manufacturing device and pipe manufacturing method - Google Patents
Pipe manufacturing device and pipe manufacturing method Download PDFInfo
- Publication number
- CN112517331A CN112517331A CN202010928599.0A CN202010928599A CN112517331A CN 112517331 A CN112517331 A CN 112517331A CN 202010928599 A CN202010928599 A CN 202010928599A CN 112517331 A CN112517331 A CN 112517331A
- Authority
- CN
- China
- Prior art keywords
- pipe
- forming
- coating agent
- section
- manufacturing apparatus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 47
- 239000011248 coating agent Substances 0.000 claims abstract description 95
- 239000011247 coating layer Substances 0.000 claims abstract description 47
- 239000010410 layer Substances 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims description 44
- 239000007788 liquid Substances 0.000 claims description 40
- 238000000465 moulding Methods 0.000 claims description 10
- 238000012790 confirmation Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 239000000463 material Substances 0.000 description 50
- 238000003780 insertion Methods 0.000 description 37
- 230000037431 insertion Effects 0.000 description 36
- 230000015572 biosynthetic process Effects 0.000 description 25
- 238000004804 winding Methods 0.000 description 25
- 239000000758 substrate Substances 0.000 description 13
- 238000001816 cooling Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 229920001296 polysiloxane Polymers 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229920002050 silicone resin Polymers 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000004945 silicone rubber Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920000181 Ethylene propylene rubber Polymers 0.000 description 1
- 239000000560 biocompatible material Substances 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C7/00—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work
- B05C7/04—Apparatus specially designed for applying liquid or other fluent material to the inside of hollow work the liquid or other fluent material flowing or being moved through the work; the work being filled with liquid or other fluent material and emptied
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
- B05C11/1002—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves
- B05C11/1005—Means for controlling supply, i.e. flow or pressure, of liquid or other fluent material to the applying apparatus, e.g. valves responsive to condition of liquid or other fluent material already applied to the surface, e.g. coating thickness, weight or pattern
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
- B05D7/225—Coating inside the pipe
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Coating Apparatus (AREA)
Abstract
The invention provides a coating device which can prevent the thickness of a coating agent layer formed on the inner surface of a pipe fitting from becoming uneven. The pipe manufacturing apparatus for manufacturing a pipe having a coating layer as a layer of a coating agent formed on an inner surface thereof includes a forming section for forming a cross section of the pipe into a predetermined shape before forming the inner surface of the pipe with a solution of the coating agent. According to such a configuration, the cross section of the pipe can be formed into a predetermined shape by the forming section before the solution of the coating agent is formed into a film. Therefore, the thickness of the coating agent layer formed on the inner surface of the pipe by the solution of the coating agent can be suppressed from becoming uneven.
Description
Technical Field
The present disclosure relates to a pipe manufacturing apparatus and a pipe manufacturing method for manufacturing a pipe in which a coating agent is used to form a film on an inner wall surface of the pipe.
Background
Thus, a pipe having a coating layer as a layer of the coating agent formed on the inner surface thereof is produced.
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 61-164563
Disclosure of Invention
Problems to be solved by the invention
However, in the coating apparatus described in patent document 1, when the pipe is guided in the vertical upward direction, the pipe receives a force from a member for guiding. The pipe fitting subjected to the force is in a deformed shape different from the shape of the cross section. When the coating is performed along the inner surface of the pipe having the deformed shape, the thickness of the coating layer deviates from a predetermined range, and a problem occurs in that the coating layer becomes uneven.
One aspect of the present disclosure is to provide a coating apparatus that suppresses a layer of a coating agent formed on an inner surface of a pipe from becoming uneven in thickness.
Means for solving the problems
One embodiment of the present disclosure is a pipe manufacturing apparatus for manufacturing a pipe having an inner surface on which a coating layer as a layer of a coating agent is formed, the pipe manufacturing apparatus including a forming section for forming a cross section of the pipe into a predetermined shape before forming the inner surface of the pipe with a solution of the coating agent.
According to such a configuration, the cross section of the pipe can be formed into a predetermined shape by the forming section before the solution of the coating agent is formed into a film. Therefore, the thickness of the coating agent layer formed on the inner surface of the pipe by the solution of the coating agent can be suppressed from becoming uneven.
One embodiment of the present disclosure is a pipe manufacturing method for manufacturing a pipe in which an inner surface of the pipe is formed with a coating agent, the pipe manufacturing method sequentially performing the following steps: a forming step of forming a cross section of the pipe into a predetermined shape; and a film forming step of forming a layer of the solution of the coating agent on the inner surface of the pipe formed in the forming step.
According to such a configuration, the cross section of the pipe is formed into a predetermined shape by the forming step. In the film forming step, a layer of the solution of the coating agent is formed on the inner surface of the pipe formed in the forming step. Therefore, the thickness of the coating agent layer formed on the inner surface of the pipe by the solution of the coating agent can be suppressed from becoming uneven.
Drawings
Fig. 1 is a diagram showing the structure of a pipe manufacturing apparatus.
Fig. 2 is a diagram showing a structure of a film formation region in the embodiment.
Fig. 3 is a diagram showing the formation of the base pipe and the film formation of the layer of the solution of the coating agent in the embodiment.
Fig. 4 is a schematic view showing a cross section of a pipe in a case where a film is formed without molding.
Fig. 5 is a view showing a film formation region in the case where a forming section for forming a range including a liquid surface is provided.
Fig. 6 is a diagram showing a configuration in the case where a plurality of forming portions are provided.
Fig. 7 is a view showing a forming portion having an insertion hole which is narrowed from bottom to top.
Fig. 8 is a view showing a forming portion having an insertion hole widened from the bottom up.
Fig. 9 is a view showing a forming section formed by a roll.
Fig. 10 is a diagram showing a part of a pipe manufacturing apparatus including a guide in a modification.
Fig. 11 is a view showing a part of a pipe manufacturing apparatus including a guide in a modification.
Description of the symbols
1-tube manufacturing apparatus, 11-substrate roll, 12 a-12 g-guide, 20-drying section, 30-winding section, 31-winding roll, 100 a-substrate tube, 100 b-film-forming tube, 100 c-coating tube, 100 d-defective tube, 200-film-forming region, 210-216-forming section, 210 a-216 a-insertion hole, 300-container, 400-coating layer, 400 a-coating agent solution, 700a, 700 b-roll, La-liquid level.
Detailed Description
Hereinafter, embodiments of the present disclosure will be described with reference to the drawings.
[1. Structure ]
The pipe manufacturing apparatus 1 according to the present embodiment manufactures the coated pipe 100c in which the coating layer 400 is formed inside the base pipe 100 a.
The application of the coated pipe 100c manufactured by the pipe manufacturing apparatus 1 is not particularly limited. The coated tube 100c may be a medical catheter for medical use, for example. The coating layer 400 and the material of the substrate tube 100a used for coating the tube 100c may be biocompatible materials (e.g., silicone). The biocompatibility as used herein refers to a property of not causing toxicity to the body even when it is introduced into the body. In addition, different materials may be used for the substrate tube 100a and the coating layer 400. For example, in the case of a medical catheter or the like, a material having high slidability, which has reduced friction with a wire or cable inserted into a tube, may be used as the coating layer 400. The thickness of the coating layer 400 is not particularly limited, and may be 5 μm to 20 μm. The inner diameter of the coating pipe 100c is not particularly limited, and may be about 3 mm.
In the present embodiment, as shown in fig. 1, an example in which the pipe manufacturing apparatus 1 is applied to a device including a drying section 20 and a winding section 30 will be described. The pipe manufacturing apparatus 1 is not limited to such a configuration.
As the coating agent solution 400a for imparting slidability, for example, a coating agent for modifying the surface of silicone rubber (trade name: X-93-1755-1, manufactured by shin-Etsu chemical Co., Ltd.) can be used. In addition, for the purpose of further improving the sliding property, fine silicone resin particles (for example, trade name: X-52-1621, manufactured by shin-Etsu chemical Co., Ltd.) or the like may be added and dispersed to form irregularities on the surface of the coating layer. The fine particles to be added are not limited to those made of silicone resin, and materials that do not affect living bodies, such as silicone rubber and silica, can be selected.
As shown in fig. 1, the tube manufacturing apparatus 1 includes a base material roll 11 and a guide 12.
The substrate roller 11 is formed in a cylindrical shape. The base material pipe 100a is wound around the circumferential surface of the base material roll 11 formed in a cylindrical shape.
The guide 12 guides the base material pipe 100a extending from the base material roll 11 in a direction vertically upward. The guide 12 has a cylindrical or cylindrical central axis (rotation axis), and the base material pipe 100a is provided along the circumferential surface of the guide 12. The guide 12 may be configured to guide the base material pipe 100a in the vertical upward direction. For example, the guide 12 may be a rotating roller.
< dry part 20 >
The drying unit 20 can use a known drying device.
The drying section 20 heats the film formation pipe 100b to vaporize the solvent of the coating agent solution 400a on the inner surface of the film formation pipe 100b, thereby drying the layer of the coating agent solution 400a in a liquid state to form the coating layer 400 as a layer of the coating agent in a solid state. The coating agent solution 400a layer on the inner surface is dried, and the coated pipe 100c on which the coating layer 400 in a solid state is formed is obtained. For example, a heater can be used as the drying section 20.
The winding section 30 winds the coated pipe 100 c. The winding section 30 winds the coating pipe 100c, and conveys the base pipe 100a from the base roll 11 to the winding section 30 through the drying section 20.
< winding part 30 >
The winding section 30 includes a winding roller 31 and a not-shown rotating shaft for rotating the winding roller 31 in a direction in which the coating tube 100c is wound.
The winding roller 31 is formed in a cylindrical or cylindrical shape. The winding roller 31 winds the coating tube 100c around the circumferential surface. The winding roller 31 is disposed in an upward direction, preferably a vertical direction, in which the coating tube 100c extends from the opening of the drying section 20.
< shape part 210 >
As shown in fig. 2, the forming section 210 is disposed between the guide 12, which is a portion of the base pipe 100a drawn out in the vertical upward direction, and the drying section 20.
The forming portion 210 has a cylindrical outer shape and has an insertion hole 210a therein.
The insertion hole 210a is a through hole extending in the vertical direction. The cross-sectional shape of the insertion hole 210a in a cross section perpendicular to the vertical direction may be, for example, a circular shape.
The insertion hole 210a is sized to be in contact with the outer surface of the base material pipe 100a and to allow the base material pipe 100a to be inserted therethrough.
The size and shape of the insertion hole 210a may be constant from the lower end to the upper end. Moreover, the constants described herein may not be constant in the exact sense.
The size and shape of the insertion hole 210a may be such that the base pipe 100a has a predetermined cross-sectional shape. The predetermined cross-sectional shape described here may be a cross-sectional shape in which the film thickness of the inner surface of the pipe is easily constant. The predetermined cross-sectional shape is preferably a circular shape, for example. Further, the predetermined cross-sectional shape is more preferably a perfect circle shape. For example, in the case of a catheter having an outer diameter of 3mm, the molding portion 210 may be formed in a perfect circle shape having a bore diameter of 2.95mm to 3mm, using an elastic body described below.
The material used for the forming section 210 may be softer than the base pipe 100 a. When the inside of the insertion hole 210a for the base material pipe 100a is inserted, it is desirable that the outer surface of the base material pipe 100a is not damaged. The forming portion 210 may be formed of an elastomer. Examples of the elastic body include a polyurethane resin, an ethylene-propylene rubber, and a foam thereof.
The position where the forming section 210 is disposed may be, for example, a position where the upper end portion of the forming section 210 is lower than the liquid surface La of the coating agent solution 400 a.
Further, the tension of the forming portion 210 can be freely changed within a range in which the deformation of the base material pipe 100a can be corrected without damaging the outer surface. The magnitude of the tensile force can be changed by, for example, changing the relative magnitude of the inner diameter of the insertion hole 210a with respect to the outer diameter of the base material pipe 100a, the length of the forming portion 210 (the contact area with the base material pipe 100 a), and the material of the forming portion 210. The tensile force described here is a force required when the base material pipe 100a is wound, that is, a shear force applied to the wound base material pipe 100 a. In the experiments of the inventors, in the silicone pipe having a thickness of 1mm to 3mm and having an inner diameter of 3mm to 30mm, the deformation of the base material pipe 100a can be corrected with a tensile force of 1kPa to 10 MPa. Among them, the magnitude of the required force varies depending on the degree of deformation before coating by the guide 12 or the like. Therefore, the tensile force is not limited to the range of 1kPa to 10 MPa.
The step of forming the base pipe 100a into a predetermined cross-sectional shape by the forming section 210 corresponds to an example of the forming step.
[2. Effect ]
In the pipe manufacturing apparatus 1 shown in fig. 1, the coating agent solution 400a is filled in the base pipe 100 a. The filling of the coating agent solution 400a is performed in the following manner: the height of the liquid surface La of the coating agent solution 400a is a predetermined position which is higher than the position where the guide 12 contacts the base pipe 100a and lower than the drying section 20.
The base material pipe 100a wound around the circumferential surface of the base material roll 11 is wound by the winding portion 30.
Here, the base material pipe 100a is wound around the circumferential surface of the rotating portion of the guide 12 from the base material roller 11, and conveyed while changing its direction so that the axial direction of the base material pipe 100a is oriented in the vertical direction. The conveying direction of the base material pipe 100a changed by the guide 12 corresponds to an example of the moving direction in the claims. Here, the base material pipe member 100a is in contact with the circumferential surface of the rotating portion of the guide 12. The contact with the guide 12 and the substrate roll 11 applies a force to the circumferential surface of the substrate tube 100 a. The force applied to the circumferential surface of the base pipe 100a causes the deformation shown in fig. 3 (a) to occur in the base pipe 100 a.
Then, the base pipe 100a is inserted into the insertion hole 210a of the forming portion 210, and the deformation of the base pipe 100a is removed as shown in fig. 3 (B), thereby forming the pipe into a predetermined cross-sectional shape.
The base pipe 100a is pulled up, and as shown in fig. 3 (C), a predetermined cross-sectional shape is maintained at the liquid surface La.
As shown in fig. 3 (D), in the film formation region 200 having a height not less than the liquid level La, the surface tension of the coating agent solution 400a acts by pulling up the base pipe 100a, and a layer of the coating agent solution 400a is formed on the inner surface of the base pipe 100 a. The layer of the coating agent solution 400a is formed by being pulled up to the film formation region 200 above the liquid surface La, whereby the base pipe 100a becomes the film formation pipe 100 b.
Returning to fig. 1, the film forming pipe 100b passes through the inside of the drying section 20 and is dried. The coating agent solution 400a inside is dried by the drying unit 20. The inside of the drying section 20 is, for example, a range heated by a heater when the heater is used as the drying section 20.
The coating agent solution 400a dries, and a solid coating layer 400 is formed inside the base pipe 100a, thereby forming a coated pipe 100 c.
The winding roller 31 pulls the coating tube 100c in an upward direction. The winding roller 31 preferably pulls the application pipe 100c in the vertical upward direction. The winding roller 31 more preferably pulls the application pipe 100c vertically upward straight from the forming section 210. The film thickness of the coating layer 400 applied to the produced coated pipe 100c varies depending on the viscosity of the coating agent solution 400a and the speed at which the film-forming pipe 100b is pulled up, that is, the speed at which the winding roll 31 winds the coated pipe 100 c. For example, the following structure is also possible: the film thickness increases when the speed of winding the coating tube 100c around the winding roller 31 is increased, and the film thickness decreases when the speed of winding the coating tube 100c around the winding roller 31 is decreased. The winding roller 31 may be configured to adjust the film thickness of the coating layer 400 by setting the speed at which the coating pipe 100c is wound. Further, a series of steps may be repeated to form a multilayer film of the coating agent solution 400 a. In this case, the multilayer films may be the same kind of film or different kinds of films.
The step of forming the layer of the coating agent solution 400a by pulling up the coating agent solution from the liquid surface La corresponds to the film forming step described in claims.
[3. Effect ]
According to the embodiments described in detail above, the following effects are obtained.
(3-1) according to the above embodiment, the coated pipe 100c having the coating layer 400 on the inner surface can be manufactured.
Thus, for example, a coated pipe 100c having a coating layer 400 formed on the inner surface thereof can be manufactured, the coating layer 400 having different properties from the base pipe 100a which is the outer surface of the coated pipe 100 c. Specifically, for example, the coated pipe 100c having a high sliding property of the inner surface can be manufactured by disposing the coating layer 400 having a small friction coefficient on the inner surface.
(3-2) according to the above embodiment, in the pipe manufacturing apparatus 1 for manufacturing the coated pipe 100c having the coating layer 400 formed as the layer of the coating agent on the inner surface, the cross section of the base pipe 100a is formed into a predetermined shape before the inner surface of the base pipe 100a is formed with the coating agent solution 400a as the solution of the coating agent.
With this structure, the cross section of the base pipe 100a can be formed into a predetermined shape before the coating agent solution 400a is formed into a film. Therefore, the thickness of the coating agent layer formed on the inner surface of the base pipe 100a by the coating agent solution 400a can be suppressed from becoming uneven. For example, the film thickness variation of the coating layer 400 can be 5% or less. Here, the film thickness deviation can be calculated as follows: the film thickness of the coating layer 400 was measured at four points of 0 degrees, 90 degrees, 180 degrees, and 270 degrees in any cross section, and the film thickness deviation was calculated based on { (maximum film thickness) - (minimum film thickness) }/{ (maximum film thickness) + (minimum film thickness) } x 100.
(3-3) the pipe manufacturing apparatus 1 according to the above embodiment manufactures the coated pipe 100c, which is a pipe in which the inner surface of the base pipe 100a is formed with the coating layer 400. Here, the pipe manufacturing apparatus 1 arranges the forming section 210 below the film formation region 200. The forming section 210 forms the cross section of the base pipe 100a into a predetermined shape at the liquid surface La of the film formation region 200 in which the layer of the coating agent solution 400a is formed in the base pipe 100a moving from the lower direction (the side through which the base pipe 100a is inserted first (the upstream side)) to the upper direction (the side through which the base pipe 100a is inserted later (the downstream side)).
According to such a configuration, before the layer of the coating agent solution 400a is formed, the cross section of the base pipe 100a can be formed into a predetermined shape on the liquid surface La of the film formation region 200 in which the layer of the coating agent solution 400a is formed. Therefore, it is possible to suppress the thickness of the layer of the coating agent solution 400a formed on the inner surface of the base material tube 100a from becoming uneven due to the deformation of the cross-sectional shape of the base material tube 100a caused by winding around the guide 12 or the base material roller 11. Further, the coated pipe 100c formed by drying the coating agent solution 400a suppresses the film thickness of the coating layer 400 from becoming uneven.
Thus, by improving the uniformity of the film thickness of the coating layer 400 disposed on the inner surface, the properties of the coating layer 400 can be more exhibited in the coated pipe 100 c. That is, for example, as shown in fig. 4, compared to the base pipe 100a, the coated pipe 100c can exhibit the properties of the coating layer 400 more than the poor pipe 100d having the poor portion 600, which is a portion where the coating layer 400 is not formed, because the portion where the coating layer 400 is not formed is smaller than the poor pipe 100 d.
(3-4) according to the above embodiment, by pulling the film-forming pipe 100b vertically upward, the layer of the coating agent solution 400a formed on the inner surface of the film-forming pipe 100b becomes more uniform. That is, the layer of the coating agent solution 400a is formed on the inner surface of the base pipe 100a by surface tension, but it is difficult to make the layer uniform particularly when the inner diameter of the base pipe 100a is large (when the base pipe 100a is thick). In the above embodiment, by pulling in the vertical direction, unevenness can be suppressed.
(3-5) in the above embodiment, the magnitude of the tensile force can be adjusted according to the shape and size of the insertion hole 210 a. By adjusting the magnitude of the tensile force, it is possible to prevent the base pipe 100a from becoming unstable and generating so-called chattering at the time of winding, and to suppress the base pipe 100a from being elongated by friction between the insertion hole 210a and the base pipe 100 a. As a result, the coating pipe 100c can suppress the formation of a non-uniform coating layer 400. Further, it is possible to suppress the coating layer 400 from becoming uneven in film thickness in the extending direction of the pipe as well as in the cross-sectional direction of the pipe. Further, as for the magnitude of the tensile force, for example, in a silicone pipe having a thickness of 1mm to 3mm and having an inner diameter of 3mm to 30mm, the deformation of the base material pipe 100a can be corrected with a tensile force of 1kPa to 10 MPa.
(3-6) according to the above embodiment, since the upper end of the forming section 210 is disposed lower than the liquid surface La, the position of the liquid surface La can be observed and confirmed. Therefore, it was confirmed by observation whether or not the base pipe 100a had a predetermined shape at the position of the liquid surface La. This can prevent the coating layer 400 formed on the inner surface of the substrate tube 100a from becoming uneven in film thickness due to the cross-sectional shape of the substrate tube 100a at the position of the liquid surface La deviating from a predetermined shape. Further, in the forming section 210, the position of the liquid surface La can be observed without forming an observation and confirmation section that is a structure capable of seeing the position of the liquid surface La. When the position of the liquid surface La is lowered, a position adjustment mechanism for lowering the forming portion 210 downward may be provided.
(3-7) according to the above embodiment, the forming section 210 is provided with the insertion hole 210a, and the tube is inserted into the insertion hole 210a and relatively moved, so that the cross section of the base tube 100a is formed into a predetermined shape in the film formation region 200.
With this configuration, the base material pipe 100a can be formed into a predetermined shape in cross section by inserting the base material pipe 100a into the insertion hole 210a of the forming portion 210. Therefore, when the layer of the coating agent solution 400a is formed on the inner surface of the base pipe 100a, the film thickness of the layer of the coating agent solution 400a can be suppressed from becoming uneven. As a result, the formation of the uneven coating layer 400 can be suppressed in the coated pipe 100 c.
(3-8) according to the above embodiment, the coating agent solution 400a in the film forming pipe 100b is dried by the drying section 20. According to such a configuration, since the time and the interval for drying can be shortened as compared with the case of drying by natural drying, the time and the interval for maintaining the shape of the cross section of the film forming pipe 100b in a predetermined shape can be shortened. Therefore, the cross section of the film forming tube 100b can be easily maintained in a predetermined shape. As a result, the thickness of the coating layer 400 formed on the inner surface of the coated pipe 100c can be suppressed from becoming uneven.
[4 ] other embodiments ]
While the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments, and can be implemented in various modifications.
(4-1) in the above embodiment, the upper end of the forming section 210 is disposed below the liquid surface La. However, the arrangement of the forming section 210 is not limited to the arrangement in which the upper end of the forming section 210 is located below the liquid surface La. For example, as shown in fig. 5, the liquid level La may be disposed between the upper end and the lower end of the forming section 214. According to such an arrangement, since the insertion hole 214a of the forming portion 214 is in direct contact with the circumferential surface of the base material pipe 100a at the height of the liquid surface La, it is possible to suppress the cross-sectional shape from being not a predetermined shape until the base material pipe 100a formed by the forming portion 214 reaches the height of the liquid surface La. For example, the variation in the film thickness of the coating layer 400 can be 3% or less.
(4-2) and, the forming part 214 may be formed of a transparent material. With such a configuration, for example, even when the liquid surface La is included in the range of the insertion hole 214a provided with the forming portion 214, the position of the liquid surface La can be observed and confirmed from the outside of the forming portion 214. That is, the forming portion 214 can be arranged without being restricted by position.
(4-3) in the above embodiment, one forming section 210 is disposed in the film formation region 200. However, the number of the arranged forming portions 210 is not limited to one, and a plurality of forming portions may be present. For example, as shown in fig. 6, three forming portions 211, 212, and 213 may be provided. The number of the forming portions 210 is not limited to three, and may be two, or four or more.
Further, by disposing the forming portion 213 at a position higher than the liquid surface La, the cross section of the base pipe 100a having a predetermined shape can be easily maintained at the liquid surface La even after the layer of the coating agent solution 400a is formed.
(4-4) in the case where there are a plurality of the forming portions 211, 212, 213, at least one of the insertion holes 211a, 212a, 213a may be formed to have a size different from the size of the insertion holes 211a, 212a, 213a of the other forming portions 211, 212, 213. Specifically, the insertion holes 211a, 212a, and 213a of the forming portions 211, 212, and 213 may be formed in different sizes. At least a part of the insertion holes 211a, 212a, 213a of the forming portions 211, 212, 213 may be different in structure.
According to such a configuration, for example, the sizes of the insertion holes 211a, 212a, and 213a of the plurality of forming portions 211, 212, and 213 are formed to be smaller in order from the bottom (the side through which the base material pipe 100a is inserted first (the conveyance upstream side)), whereby the shape of the base material pipe 100a can be formed into a predetermined shape in stages.
Conversely, for example, by forming the insertion holes 211a, 212a, 213a of the plurality of forming portions 211, 212, 213 to be larger in size in order from the bottom (the side through which the base pipe 100a is inserted first (the conveyance upstream side)), when the base pipe 100a is inserted through the insertion hole 211a of the lowermost forming portion 211, friction is generated between the forming portion 211 and the base pipe 100a in the base pipe 100a, and the base pipe 100a is extended, and even in this case, the base pipe 100a can be conveyed to the drying unit 20 with the extension suppressed by the forming portion 212 and the forming portion 213. This makes it easy to hold the substrate tube 100a having reached the height of the liquid surface La and the film-forming tube 100b before entering the drying section 20 in a predetermined shape.
(4-5) in the above embodiment, the size and shape of the insertion hole 210a may be constant from the lower end to the upper end of the insertion hole 210a, but the size of the insertion hole 210a may be varied from the lower end to the upper end of the insertion hole 210 a. Specifically, as shown in fig. 7, the size of the insertion hole 215a may be formed to be narrower from the lower end to the upper end of the insertion hole 215 a. With this configuration, the cross-sectional shape of the base pipe 100a can be formed in stages from the lower end of the insertion hole 215 a.
Conversely, as shown in fig. 8, the size may be increased from the lower end to the upper end of the insertion hole 216 a. According to such a configuration, if the base pipe 100a and the forming portion 216 are in contact at the lower end portion of the insertion hole 216a, the base pipe 100a is extended by friction between the base pipe 100a and the forming portion 216, and the extension of the base pipe 100a is gradually reduced toward the upper end side. Therefore, the base material pipe 100a can be conveyed to the drying section 20 while being prevented from being stretched. This makes it easy to maintain the film forming pipe 100b in a predetermined shape before entering the drying section 20.
(4-6) in the above embodiment, the cross-sectional shape of the base pipe 100a is formed by the forming portion 210 having the insertion hole 210 a. However, the structure of the cross-sectional shape of the base material pipe 100a is not limited to this structure.
For example, the cross-sectional shape may be formed into a predetermined shape by rollers 700a and 700b for pinching the pipe shown in fig. 9.
With this configuration, the cross section of the base pipe 100a can be formed into a predetermined shape in the film formation region 200 where the layer of the coating agent solution 400a is formed by the rollers 700a and 700b sandwiching the pipe. Therefore, the thickness of the coating layer 400 formed on the inner surface of the coated pipe member 100c can be suppressed from becoming uneven.
(4-7) in the above embodiment, the base material pipe 100a is disposed in a state of being wound around the circumferential surface of the base material roll 11, but is not limited to being disposed in a state of being wound around the circumferential surface of the base material roll 11 or the like.
For example, as shown in fig. 10, the substrate roll 11 may be provided.
Further, a plurality of guides 12 of a rotation axis and a rotation portion may be provided. In this case, since the force is applied from both sides by clamping the guide members 12a and 12b and from both sides of the base material pipe 100a, the cross-sectional shape is more easily deformed. Even in such a configuration, the cross-sectional shape can be formed into a predetermined shape by the forming section 210, and the coated pipe 100c having the inner surface coated can be formed by the coating layer 400 having a predetermined film thickness.
As shown in fig. 10, the coating agent solution 400a filled in the base pipe 100a may be discharged.
That is, the end of the base pipe 100a may be opened, and the coating agent solution 400a may be discharged from the opening. Further, the container 300 may be provided to collect the coating agent solution 400a discharged from the end of the base pipe 100 a. The end portion may be disposed at substantially the same height as the liquid surface La.
As shown in fig. 11, the plurality of guides 12 may be arranged, for example, by having a plurality of guides 12c to 12g whose rotation axes are parallel to each other in the axial direction. The plurality of guides 12c to 12g may convey the base material pipe 100a guided by the guides 12c to 12g in a U shape protruding downward. In addition, the guides 12c to 12g may be disposed at two positions of the U-shape of the base pipe 100a at positions where the liquid surface of the coating agent solution 400a appears. That is, the guides 12c to 12g are disposed so that the end of the base pipe 100a is positioned higher than the height of the liquid surface La of the coating agent solution 400 a. Specifically, for example, the upper side of the circumferential surface of the guide 12f located farthest from the film formation region 200 may be arranged at a position higher than the liquid surface La, and the substrate tube 100a may be arranged to pass through the upper side of the circumferential surface of the guide 12 f. The guide 12 disposed higher than the liquid surface La on the upper side of the circumferential surface is not limited to the guide 12f located farthest from the film formation region 200. The guides 12c, 12d, and 12e may be disposed between the guides 12f to 12g, and the circumferential surface of the rotating portion may be disposed along the lower side of the substrate tube 100a to be conveyed. This enables the base material pipe 100a to be supported when the base material pipe 100a is conveyed between the guides 12f to 12 g.
(4-8) the pipe manufacturing apparatus 1 according to the above embodiment has the drying section 20 for curing the coating layer 400 of the film forming pipe 100b, but the structure for curing the coating layer 400 of the film forming pipe 100b is not limited to the drying section 20. For example, when the coating agent solution 400a is in a liquid state by heating the coating layer 400 with heat of a heating tank or the like, instead of the solution in which the coating layer 400 is dissolved in the solvent, the film forming tube 100b may be passed through a cooling tank for cooling the film forming tube 100b, instead of the drying section 20 for drying the film forming tube 100 b. Further, depending on the type of the material of the coating layer 400, a cooling tank may be disposed separately from the drying section 20 instead of the drying section 20. Further, the cooling tank may be disposed above the drying section 20 or the drying section 20 may be disposed above the cooling tank, depending on the positional relationship between the drying section 20 and the cooling tank. That is, the cooling may be performed after drying, or the drying may be performed after cooling.
(4-9) in the above embodiment, the drying section 20 is provided, but the drying section 20 may not be provided. That is, the coated pipe 100c may be manufactured by naturally drying the film-forming pipe 100b from the thermostatic bath without providing the drying section 20, and then forming the coating agent solution 400a in a liquid state into the coating layer 400 in a solid state. In the above embodiment, the film formation area 200 is a range up to the position where the film formation pipe 100b is carried into the drying unit 20, but the film formation area 200 is not limited to such a range. For example, in the case of a configuration without the drying section 20, the film formation region 200 may be a range from a position at which the layer of the coating agent solution 400a is formed on the liquid surface La on the surface of the base pipe 100a to a position at which the film thickness of the coating layer 400 in a solid state provided on the coating pipe 100c does not change.
(4-10) in the above embodiment, the film formation region 200 may be disposed inside a constant temperature bath that suppresses curing of the coating agent solution 400a due to drying. Before reaching the film formation region 200, the coating agent solution 400a can be prevented from solidifying inside the base pipe 100a and causing pipe clogging.
(4-11) the shape of the insertion hole 210a is not limited to the circular shape in the cross section perpendicular to the vertical direction. Specifically, the cross-sectional shape of the base pipe 100a at the liquid surface La may be a predetermined shape.
(4-12) the plurality of functions of one component in the above embodiment may be realized by a plurality of components, or one function of one component may be realized by a plurality of components. Further, a plurality of functions included in a plurality of components may be realized by one component, or one function realized by a plurality of components may be realized by one component. Moreover, a part of the structure of the above embodiment may be omitted. In addition, at least a part of the structure of the above embodiment may be added to or replaced with the structure of the other above embodiments.
(4-13) in addition to the pipe manufacturing apparatus 1 described above, the present disclosure can be implemented in various forms such as a system having the pipe manufacturing apparatus 1 as a component, a program for causing a computer to function as the pipe manufacturing apparatus 1, a non-transitory tangible recording medium such as a semiconductor memory in which the program is recorded, a pipe manufacturing method, and the like.
Claims (11)
1. A pipe manufacturing apparatus for manufacturing a pipe having a coating layer as a layer of a coating agent formed on an inner surface thereof,
the coating agent solution is applied to the inner surface of the pipe before the inner surface of the pipe is formed into a film by the coating agent solution.
2. The pipe manufacturing apparatus according to claim 1,
the forming portion is provided with a through hole, and the pipe is inserted into the through hole and relatively moved, and the cross section of the pipe is formed into the predetermined shape.
3. The pipe manufacturing apparatus according to claim 2,
a plurality of the forming parts are arranged in a row along the moving direction of the pipe,
the through-holes in the plurality of molding portions have different diameters at least partially,
in the plurality of molding portions, the diameter of the through hole of the molding portion on the side to be inserted first is larger than the diameter of the through hole of the molding portion on the side to be inserted later.
4. The pipe manufacturing apparatus according to claim 2,
a plurality of the forming parts are arranged in a row along the moving direction of the pipe,
the through-holes in the plurality of molding portions have different diameters at least partially,
in the plurality of molding portions, the through-hole of the molding portion on the side to be inserted later has a larger diameter than the through-hole of the molding portion on the side to be inserted first.
5. A pipe manufacturing apparatus according to any one of claims 2 to 4,
the diameter of the through hole of the forming portion changes along the moving direction of the pipe.
6. A pipe manufacturing apparatus according to any one of claims 1 to 5,
the forming section is configured to be able to observe and confirm a liquid level of the solution of the coating agent from outside the forming section.
7. The pipe manufacturing apparatus according to claim 6,
the forming section is disposed at a position different from the liquid surface.
8. A tube manufacturing apparatus according to claim 6 or 7,
the forming section is provided with an observation and confirmation section capable of observing and confirming the liquid level from the outside of the forming section.
9. A pipe manufacturing apparatus according to any one of claims 1 to 8,
the coating device further comprises a drying section for drying the layer of the solution of the coating agent formed on the inner surface of the pipe.
10. The pipe manufacturing apparatus according to claim 1,
the forming section is a roller disposed so as to sandwich the pipe therebetween, and a surface of the roller which comes into contact with the pipe has a shape which causes a cross section of the pipe to be the predetermined shape.
11. A method for manufacturing a pipe having an inner surface of the pipe formed with a coating agent, the method comprising the steps of:
a forming step of forming a cross section of the pipe into a predetermined shape; and
and a film forming step of forming a film of the solution of the coating agent on the inner surface of the pipe formed in the forming step.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2019168474A JP7263995B2 (en) | 2019-09-17 | 2019-09-17 | Tube manufacturing device and tube manufacturing method |
| JP2019-168474 | 2019-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112517331A true CN112517331A (en) | 2021-03-19 |
Family
ID=74877219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010928599.0A Pending CN112517331A (en) | 2019-09-17 | 2020-09-07 | Pipe manufacturing device and pipe manufacturing method |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP7263995B2 (en) |
| CN (1) | CN112517331A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3616983A (en) * | 1967-12-27 | 1971-11-02 | Matsushita Electric Works Ltd | Apparatus for continuously forming plastic-coated metallic tubings |
| GB1280068A (en) * | 1969-06-09 | 1972-07-05 | Kalle Ag | Process for the manufacture of a reinforced semipermeable membrane tube |
| US4353940A (en) * | 1980-03-28 | 1982-10-12 | Hoechst Aktiengesellschaft | Process for the manufacture of tubing having a coating on its inside and apparatus for carrying out the process |
| JPH0224916A (en) * | 1988-07-14 | 1990-01-26 | Showa Electric Wire & Cable Co Ltd | Manufacturing equipment for conduit tube |
| JPH0559195A (en) * | 1991-07-12 | 1993-03-09 | Nippon Valqua Ind Ltd | Treatment of inner surface of fluororesin tube |
| JPH06218428A (en) * | 1993-01-22 | 1994-08-09 | Nisshin Steel Co Ltd | Manufacture of metallic welded tube |
| TW200426887A (en) * | 2003-05-23 | 2004-12-01 | Ckd Corp | Method for forming coating layer and method for manufacturing bulb and manufacturing device thereof |
| CN101441296A (en) * | 2008-12-25 | 2009-05-27 | 哈尔滨工程大学 | Wave guide layer-doped type capillary optical fiber and preparing method thereof |
| JP2016064022A (en) * | 2014-09-25 | 2016-04-28 | テルモ株式会社 | Manufacturing method of medical long body and manufacturing apparatus thereof |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01178934U (en) * | 1988-06-09 | 1989-12-21 | ||
| JPH0664767U (en) * | 1993-02-26 | 1994-09-13 | 北辰工業株式会社 | Tube inner surface adhesive coating device |
| IT1261103B (en) * | 1993-10-29 | 1996-05-09 | Borletti Climatizzazione | PROCEDURE FOR CONFORMING ACCORDING TO A CIRCULAR CROSS SECTION THE END OF AN OBLONG CROSS SECTION TUBE. |
| JP4628822B2 (en) | 2005-03-03 | 2011-02-09 | 日本バルカー工業株式会社 | Tube inner peripheral surface treatment apparatus and tube inner peripheral surface treatment method |
| JP2019181385A (en) | 2018-04-12 | 2019-10-24 | 日立金属株式会社 | Manufacturing method and manufacturing apparatus of tube having coating film on inner surface |
-
2019
- 2019-09-17 JP JP2019168474A patent/JP7263995B2/en active Active
-
2020
- 2020-09-07 CN CN202010928599.0A patent/CN112517331A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3616983A (en) * | 1967-12-27 | 1971-11-02 | Matsushita Electric Works Ltd | Apparatus for continuously forming plastic-coated metallic tubings |
| GB1280068A (en) * | 1969-06-09 | 1972-07-05 | Kalle Ag | Process for the manufacture of a reinforced semipermeable membrane tube |
| US4353940A (en) * | 1980-03-28 | 1982-10-12 | Hoechst Aktiengesellschaft | Process for the manufacture of tubing having a coating on its inside and apparatus for carrying out the process |
| JPH0224916A (en) * | 1988-07-14 | 1990-01-26 | Showa Electric Wire & Cable Co Ltd | Manufacturing equipment for conduit tube |
| JPH0559195A (en) * | 1991-07-12 | 1993-03-09 | Nippon Valqua Ind Ltd | Treatment of inner surface of fluororesin tube |
| JPH06218428A (en) * | 1993-01-22 | 1994-08-09 | Nisshin Steel Co Ltd | Manufacture of metallic welded tube |
| TW200426887A (en) * | 2003-05-23 | 2004-12-01 | Ckd Corp | Method for forming coating layer and method for manufacturing bulb and manufacturing device thereof |
| CN101441296A (en) * | 2008-12-25 | 2009-05-27 | 哈尔滨工程大学 | Wave guide layer-doped type capillary optical fiber and preparing method thereof |
| JP2016064022A (en) * | 2014-09-25 | 2016-04-28 | テルモ株式会社 | Manufacturing method of medical long body and manufacturing apparatus thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP7263995B2 (en) | 2023-04-25 |
| JP2021045698A (en) | 2021-03-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9681972B2 (en) | Uniform crimping and deployment methods for polymer scaffold | |
| CN102471953B (en) | Checker balloon winding machine | |
| JP7062990B2 (en) | Biaxially oriented polypropylene film | |
| US20040068249A1 (en) | Medical device with polymer coated inner lumen and method for forming | |
| US20070043333A1 (en) | Method for forming a medical device with a polymer coated inner lumen | |
| WO1993004720A1 (en) | Apparatus for and method of making ultra thin walled wire reinforced endotracheal tubing and product thereof | |
| EP2699205B1 (en) | Uniform crimping methods for polymer scaffold | |
| US10744231B1 (en) | Catheter comprising PTFE liner | |
| CN112517331A (en) | Pipe manufacturing device and pipe manufacturing method | |
| US8524003B2 (en) | Loaded film cassette for gaseous vapor deposition | |
| US8551249B2 (en) | Film cassette for gaseous vapor deposition | |
| JP2803813B2 (en) | Coating method and apparatus | |
| JP6723351B2 (en) | Method for coating strips, cable, apparatus for the method, method of controlling the apparatus and computer program product | |
| TW201536529A (en) | Production method of stretched film and film stretching apparatus | |
| US8534591B2 (en) | Apparatus and method for loading a film cassette for gaseous vapor deposition | |
| US20110048639A1 (en) | Apparatus and method for unloading a film cassette for gaseous vapor deposition | |
| JP5308701B2 (en) | Seamless belt manufacturing method and manufacturing apparatus | |
| US11577994B2 (en) | Optical fiber manufacturing method and manufacturing device | |
| KR101830730B1 (en) | The medical guide wire and a method of manufacturing | |
| JP5779550B2 (en) | Microstructure transfer device | |
| JP2018005022A (en) | Coating film formation device and coating film formation method | |
| CN109960126A (en) | Fixing device, image forming apparatus and push part forming method | |
| KR20170102803A (en) | Film forming apparatus and method | |
| JP2022040798A (en) | Manufacturing method, aerogel structure and manufacturing apparatus | |
| JP2009072941A (en) | Method and apparatus for producing extrusion-molded tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: Tokyo, Japan Applicant after: Bomeilicheng Co.,Ltd. Address before: Tokyo, Japan Applicant before: HITACHI METALS, Ltd. |